LTE Advance Feature
Click here to load reader
-
Upload
ray-khastur -
Category
Engineering
-
view
3.173 -
download
10
Transcript of LTE Advance Feature
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
6.LTE Advance Feature
MobileComm Professionals, Inc Author : Ray KhasturTitle : LTE Optimization Consultant
Company Confidential - Pinnacle Learning Center
6.1 LTE Broadcast (eMBMS)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Service Orientation & Network Impact
• Area where have similarity
interest same service for
watching TV by mobile phone
(shoping mall, football match
stadium, residential).
• Operator which providing triple
play service and don’t want to
waste existing radio resource for
Unicast Service can utilize
eMBMS service which consume
specified radio resource for
Broadcast service without
deteriorate PRB Utilization.
• eMBMS Service must be guarantee that in this specific area have only UE with capability to decode MBSFN radio frame to use MBMS service, otherwise Incompatible UE will have negative effect in MBSFN Service area (SINR Fluctuated, Access Failure, Throughput Issue.
• If MBSFN Reserved Cell are not planning well, great Inter cell interference will be occur due to TDD Interference from Normal CP will be collision with Extended CP and UE will confuse to decode MCCH and make KPI degradation.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Related Feature License Required &
MBSFN Review• TDLOFD-070220 eMBMS Phase 1 based on Centralized MCE
Architecture
– TDLOFD-07022001 Multi-cell transmission in MBSFN area
– TDLOFD-07022002 Mixed transmission of unicast and broadcast
– TDLOFD-07022003 Data synchronization
– TDLOFD-07022004 Session admission control
• TDLOFD-080210 eMBMS Service Continuity
•MBSFN synchronization areaMBSFN is short for Multimedia Broadcast multicast service Single Frequency Network. Within an MBSFN synchronization area, all eNodeBs must be synchronized by frequency, time, and phase and must support MBSFN transmissions. In accordance with 3GPP TS 36.300, on a given frequency layer, an eNodeB can belong to only one MBSFN synchronization area.
•MBSFN transmission
MBSFN transmission is a simulcast transmission technique achieved
by transmitting identical waveforms at the same time from all cells
within an MBSFN area. A UE regards an MBSFN transmission from
multiple cells as a single transmission, as shown in Left Picture. The
UE combines the MBSFN signals received from multiple cells as
multipath signals from a single cell, thereby mitigating inter-cell
interference and achieving combining gains.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MBSFN Review (Cont’d)• MBSFN area reserved cell
MBSFN area reserved cells are a type of special cells in
MBSFN areas. The MBSFN subframes in the cells are not
used for MBSFN transmissions. MBSFN area reserved cells
are deployed at the edges of MBSFN areas to control
interference between broadcast cells and neighboring cells.
The neighboring cells may be unicast cells or belong to another
MBSFN area. MBSFN area reserved cells use the same
MBSFN subframe configuration as other cells in the same
MBSFN area.
Take the interference of broadcast cells to neighboring unicast
cells as an example. At the edge of an MBSFN area, broadcast
cells are adjacent to unicast cells. The signals in an MBSFN
subframe from multiple broadcast cells are combined, causing
greater interference on the unicast cells in the subframe than
non-MBSFN cells do. As a result, the coverage areas of the
unicast cells shrink. The unicast cells also cause interference
on the broadcast cells in MBSFN subframes. Therefore,
MBSFN area reserved cells are required at the edges of
MBSFN areas to separate the broadcast cells from the unicast
cells.
As stipulated by 3GPP specifications, MBSFN subframes in
MBSFN area reserved cells are not used for MBSFN
transmissions, but can be used to transmit unicast service data
at limited power. However, Huawei eMBMS does not allow
MBMS or unicast service data transmissions using MBSFN
subframes in MBSFN area reserved cells. Therefore, resources
are wasted if an excessive number of MBSFN area reserved
cells are configured. You are advised to configure the outmost
ring of cells within an MBSFN area as MBSFN area reserved
cells.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
BOLT 4G LTE Radio Frame Configuration
BOLT Subframe Allignmentconfiguration using SA2 (3:1) with Special Subframe Pattern 7 (10:2:2) with Normal Cyclic Prefix
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
eMBMS Architecture & Interface3
GP
P C
om
mo
n A
rch
itec
ture
HU
AW
EI A
rch
itec
ture
Brief Summary:• Maximum only 3 MBSN area can be setup in one
carrier.• Maximum 4 Subframe can be used to transmit
PMCH.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
New Channel
PHICH : Physical HARQ Indicator ChannelPBCH : Physical Broadcast Channel
PCFICH : Physical Control Format Indicator ChannelPDSCH : Physical Downlink Shared Channel
PDCCH : Physical Downlink Control ChannelPMCH : Physical Multicast Channel
MCCH : Multicast Control Channel
MTCH : Multicast Traffic Channel
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
eMBMS Frame Structure
HUAWEITD-LTE SA2Config
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
eMBMS Frame Structure (cont’d)
Normal CP Normal CP *Hybrid*Hybrid
Combination first two symbols Normal CP for PDCCH and 10 symbols Extended CP formPMCH transmission*Hybrid :
A single MBSFN subframe is
divided into a non-MBSFN region
and an MBSFN region. The non-
MBSFN region is used to transmit
the physical downlink control
channel (PDCCH) required for
normal-subframe transmission.
Normal CP Extended CP
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MBSFN Subframe Characteristic
• MBSFN reference signals are always transmitted on antenna port 4. R4s in Beside Picture denote the reference signals. For details about the reference signals, see section 6.10.2 "MBSFN reference signals" in 3GPP TS 36.211 V10.7.0.
• Symbols in an MBSFN subframe are grouped into a non-MBSFN region and an MBSFN region. The non-MBSFN region may occupy one or two symbol periods. The other symbol periods in the MBSFN subframebelong to the MBSFN region.
• Symbols in the non-MBSFN region of an MBSFN subframe use the same cyclic prefix (CP) length (normal CP in most cases) as the subframe 0 in the radio frame does. These symbols are used to transmit the PDCCH that carries the MCCH change notification. The notification informs UEs that the MCCH will be updated in the next MCCH modification period. The notification is transmitted on the PDCCH using the downlink control information (DCI) format 1C and is identified using an MBMS - radio network temporary identifier (M-RNTI).
• Symbols in the MBSFN region of an MBSFN subframe use extended CP. These symbols are used to transmit the PMCH.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MBMS Notification Configuration
For TD-LTE SA2 Config, Maximum only 4
Subframes can be use to transmit MCCH
The MBSFN-AreaInfoList IE in SIB13 conveys the basic information about MBSFN areas to which individual cells belong. As stipulated in 3GPP TS 36.331, a single cell can concurrently belong to a maximum of eight MBSFN areas. Currently, Huawei's eMBMS allows each cell to be included in a maximum of three MBSFN areas.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
•The MCCH modification period is 512 radio frames.
•The maximum number of MBSFN subframes per radio frame is 4.
•non-MBSFNregionLength is 1.
•notificationRepetitionCoeff is 2.
•notificationOffset is 6.
•notificationSF-Index is 1
SFN=𝑀𝑀𝐶𝐻.𝑀𝑜𝑑𝑖𝑓.𝑃𝑒𝑟𝑖𝑜𝑑
𝑛𝑜𝑡𝑖𝑓.𝑅𝑒𝑝𝑒𝑡𝑖𝑡𝑖𝑜𝑛.𝐶𝑜𝑒𝑓𝑓
512/2 = 256, so SFN is 256.
SFN Mod MCCH = SFN + Notif.Offset262 = 256 + 6
SFN Mod MCCH(N) = SFN*(N)+Notif.Offset
SFN Mod MCCH(2) = 256x2+6= 512+6= 518
MBMS Notification Configuration (cont’d)
From Above Sample, MMCH Modification will appear on System Frame Number 262, 518, 774, 1030, etc
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MBMS Notification Configuration (cont’d)
0 1 2 3 4 5 6 7 8 9 Remarks
0 Downlink Channel
1 Special Subframe
2 Uplink Channel
3 MTCH
4 MMCH
5
: : : : : : : : : :
261
262 MCCH
262
262
262
262
262
: : : : : : : : : :
517
518 MCCH
519
520
521
522
523
: : : : : : : : : :
Radio Frame with MBSFN
0 1 2 3 4 5 6 7 8 9 Remarks
0 Downlink Channel
1 Special Subframe
2 Uplink Channel
3
4
5
Radio Frame non MBSFN
All Subframe use Normal Cyclic Prefix with allocated subframe assignment
Subframe 0,1,2 and 5,6,7 use Normal Cyclyc Prefix (7 symbols/slot).
In PMCH use Extended Cyclic (6 symbols/slot).
And based on previous slide example, Control channel MBMS will appear each 256 System Frame Number with Offset 6 SFN.
Company Confidential - Pinnacle Learning Center
6.2 LTE DL CoMP(Coordinated Multi Point)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
DL CoMP Introduction
LTE RRC Connection Setup Complete Evolution
DL CoMP Application :
Intra BBP
Inter-eNodeB DL CoMP Based on Relaxed Backhaul
Downlink Transmission by Multiple Cells
Network Planning & Network Impact
Related Counter
Content
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Concept Definition
Cluster A set of multiple cells, in which scheduling and pilot information sharing are implemented. A cluster contains all candidate coordinating cells for CoMP UEs.
CoMP UE UEs that meet the requirements for CoMP in event A3 measurement reports.
Non-CoMP UE UEs other than CoMP UEs in a cell, including coordinating UEs and normal UEs. For a non-CoMP UE, its data is processed by only one cell.
Coordinating UE Non-CoMP UEs that share time and frequency resources with CoMP UEs in coordinating cells if CBF is used.
Normal UE Normal UEs refer to non-CoMP UEs when JT is implemented.Normal UEs refer to UEs other than CoMP UEs and coordinating UEs in a coordinating cell when CBF is implemented.
Serving cell A cell that keeps connected to CoMP UEs through the physical downlink control channel (PDCCH). A CoMP UE can have only one serving cell at a time.
Coordinating cell A set of cells in which CoMP UE channel information is measured and PDSCH data is transmitted directly or indirectly to CoMP UEs.
Coordinating cluster A set of cells that support JT or CBF for CoMP UEs, including the serving cell and coordinating cells.
Centralized control node The centralized control node is deployed on a UBBPd in a BBU and exchanges signaling and service data with the eNodeB. Inter-eNodeB DL CoMP requires a centralized control node for each cluster.Signaling data includes:•User information: UE ID and cell ID, which are delivered by the serving cell to coordinating cells•Scheduling information: priority-calculation parameters, CoMP UE information, pre-allocation information, and pairing information of CoMP UEs. Priority-calculation parameters and CoMP UE information are collected and sent by cells to the centralized control node. Pre-allocation information of CoMP UEs and power pattern indication are delivered from the centralized control node to each cell.
eX2 interface Interface for inter-eNodeB coordination
Mixed scheduling mode One type of coordinated scheduling working mode of baseband equipment. The baseband equipment working in this mode can simultaneously perform baseband processing and centralized scheduling.
Dedicated scheduling mode
One type of coordinated scheduling working mode of baseband equipment. The baseband equipment working in this mode can only perform centralized scheduling.
Related Concept
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Concept Definition
JT (Joint Transmission) multiple cells can transmit the same data concurrently by using the same radio resources (frequency and time). Because the same data is sent, the speed would not double, but reception performance would be improved.
CBF (Coordinated Beam Forming)
allocates different spatial resources (beam patterns) to UEs at cell edge by using smart antenna technology.
DCS (Dynamic Coordinated Scheduling)
The basic idea of DCS is pretty similar to ICIC in that it reduces inter-cell interference by allocating different frequency resources (RBs or sub-carriers) to cell-edge UEs. But from technical perspective, DCS is a more advanced technology that requires a much shorter operation period, more complicated signal processing and more elaborate algorithm, compared to ICIC. In ICIC, cooperating cells share interference information of each cell, but in DCS they can share channel information of each user.
Related Concept
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Similar to the X2 interface, the eX2 interface is a logical interface between eNodeBs. The difference is that the eX2 interface handles only inter-
eNodeB service coordination. X2 and eX2 interfaces can coexist.
eX2 self-management is a process that the eNodeB automatically configures and removes eX2 interfaces according to external or internal
factors. External factors include end-point configuration changes or the situation where an eNodeB initiates service coordination to other
eNodeBs. Internal factors include transmission link aging.
Inter-eNodeB service coordination features include:
• Inter-eNodeB carrier aggregation (CA)
• Inter-eNodeB DL CoMP
eX2 Interface
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
DL CoMP Introduction
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
DL CoMP - Introduction
CoMP was Introduce in LTE Release 11.The LTE system mainly adopts intra-frequency networking to improve spectral efficiency. However, in this networking mode, cell edge users (CEUs) receive co-channel interference from neighboring cells. Operators expect to mitigate inter-cell interference and improve CEU throughput.DL CoMP is introduced as PDSCH co-channel interference control technology. DL CoMP increases wanted signal power and reduce inter-cell interference, thereby increasing the throughput of CEUs
DL CoMP provides the following benefits:
• Increases the downlink throughput of cell edge users (CEUs) without decreasing the average cell throughput.
• Increases the handover success rate.• Reduces the probability of downlink throughput decrease in
handovers
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
DL CoMP - Introduction
DL CoMP Application Type Transmission Mode Related Feature
Intra-BBP DL CoMP DCS TDLAOFD-001001 LTE-A Introduction•TDLAOFD-00100103 Intra-eNodeB DL CoMP in DCS Mode
Adaptive (The eNodeB adaptively selects DCS, CBF, or JT.) TDLAOFD-003002 Intra-eNodeB DL CoMP in Adaptive Mode•TDLAOFD-00300201 Coordinated Beamforming•TDLAOFD-00300202 Single-User Joint Transmission•TDLAOFD-00300204 Adaptive Transmission Mode Switching
Inter-eNodeB DL CoMP based on relaxed backhaul (either intra-BBU inter-BBP or inter-BBU)
•DCS•Adaptive (The eNodeB adaptively selects DCS or CBF.)
TDLAOFD-081411 Inter-eNodeB DL CoMP Based on Relaxed Backhaul
DL CoMP is a coordinated multi-point downlink transmission technology, which enables eNodeBs to use antennas in neighboring cells to
process and transmit PDSCH data of a specific UE by means of joint transmission (JT), coordinated beamforming (CBF), and dynamic
cell selection (DCS). This technology increases wanted signal power and mitigates inter-cell interference. eNodeB can adaptively adopt
an appropriate transmission mode based on the cell load and channel quality.
DL CoMP is classified based on the coordinated transmission scope and transmission bandwidth consumption, as described in
below Table. Intra-BBP DL CoMP reduces co-channel interference from an intra-eNodeB cell. Inter-eNodeB DL CoMP reduces co-
channel interference from an inter-eNodeB cell or both inter- and intra-eNodeB cells.
Table 2-1 DL CoMP application classification
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
LTE category (36.306)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
DL CoMP Evolution
Item eRAN TDD 7.0 and eRAN TDD 8.0
eRAN TDD 8.1
Transmission mode
•Intra-BBP transmission in DCS mode•Intra-BBP adaptive switching among DCS, CBF, and JT modes
•Intra-BBP transmission in DCS mode•Intra-BBP adaptive switching among DCS, CBF, and JT modes•Intra-BBP adaptive switching among DCS, CBF, and JT modes•Inter-eNodeB adaptive CoMP and intra-BBP adaptive CoMP
Networking •Supports intra-frequency networks consisting of macro eNodeBs.•Supports coordination among three intra-BBP cells.•SFN cells and multi-RRU combination cells cannot be added to an intra-eNodeB DL CoMP cluster.
•Supports intra-frequency networks consisting of macro eNodeBs.•Supports coordination among three intra-BBP cells.•Supports coordination in inter-eNodeB cells.•SFN cells cannot be added to an intra-eNodeB DL CoMP cluster.•Multi-RRU combination cells can be added to an inter-eNodeB DL CoMP cluster.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
25
RRC DL CoMP
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
26
RRC DL CoMP
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
27
RRC DL CoMP
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
28
Channel Information in CoMP
CQI: An indicator of channel quality. Displayed as a highest modulation and coding rate (MCR) value that satisfies the condition of 'channel block error rate (BLER) < 0.1'. It is set as a value ranging 0 ~ 15 (4 bits). The better channel quality, the higher MCR is used. Subband CQIs indicate the quality for specific frequency ranges (subrange) while wideband CQIs indicate that for the entire channel bandwidth.
PMI: Base stations deliver more than one data stream (layer) through Tx antenna. Precoding matrix shows how individual data streams (layers) are mapped to antennas. To calculate precoding matrix, UEs obtain channel information by measuring the channel quality of each DL antenna. Because providing feedback on all channel information results in significantly increased overheads, generally a code book is pre-configured at base stations and UEs. Using this code book, UEs send the index of a corresponding precoding matrix only. Base stations, by referring the reported precoding matrix, calculate its own precoding matrix, and use the optimal value from it.
RI: Indicates the number of data stream(s) being delivered in DL. For instance, with 2 X 2 MIMO, this value is 1 in case of transmit diversity MIMO where two antennas at a base station are sending the same data stream, and it is 2 in case of spatial multiplexing MIMO where the antennas are sending different data streams.
Channels are transmission routes for data, i.e. between Tx antenna and Rx antenna across air. If base stations know
UE's channel information beforehand, they can transmit precoded data so that UE can get better reception. For this
purpose, UEs measure their channels, and report the resulting Channel State Information (CSI) to their base stations.
Base stations give their UEs an instruction on how and which cell's CSI are to be measured by sending a CSI-RS (CSI
Reference Signal) configuration message. Upon this instruction, UEs measure CSI and report to their serving cells. In
general, CSI information includes Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), and Rank Indicator
(RI).
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
DL CoMP ApplicationIntra BBP
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
License Required
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
31
Enabling of DL CoMP
MOD CELLALGOSWITCH
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Intra-BBP DL CoMP
Intra-BBP CoMP corresponds to TDLAOFD-00100103 Intra-eNodeB DL CoMP in DCS
Mode and TDLAOFD-003002 Intra-eNodeB DL CoMP in Adaptive Mode. Intra-BBP
CoMP requires that cells for DL CoMP be configured on the same BBP.
The coordinating cell has the following requirements for the number of antennas:
•JT requires that CoMP UEs support beamforming, and beamforming requires that
cells work in 4T4R or 8T8R mode. Therefore, the serving cell and coordinating cell of a
JT UE must have four or eight TX antennas.
•The coordinating UE of a CBF UE must be a single-stream or dual-stream
beamforming UE. The coordinating cell of a CBF UE must have four or eight TX
antennas.
•The serving cell and coordinating cell of a DCS UE must have two, four, or eight TX
antennas.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Intra-BBP DL CoMP
The following details the basic procedure for DL CoMP:
1.Enabling of DL CoMP
1. Select the IntraDlCompSwitch(IntraDlCompSwitch) check box under
the CellAlgoSwitch.DlCompSwitch parameter.
2. Set the CELLDLCOMPALGO.DlCompA3Offset parameter. It is recommended that this
parameter be set to -12.
2.Selection of a CoMP UE and its coordinating cellsIn intra-BBP DL CoMP, the eNodeB selects a CoMP UE
and its coordinating cell based on the event A3 measurement reports from UEs, reference signal received
power (RSRP) difference between the serving and neighboring cells, and RSRP in the neighboring cell. Then,
the eNodeB notifies the physical layer of the selected UE and cell.
3.Transmission by multiple cellsBased on the information about the CoMP UE, serving cell, and coordinating
cell, the physical layer processes and transmits PDSCH data of the CoMP UE on the antennas of the serving
cell and coordinating cell, by performing JT, CBF, and/or DCS.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
DL CoMP ApplicationInter- eNodeB DL CoMP Based on Relaxed Backhaul
eRAN 8.1
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
License Required
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Enabling of DL CoMP
MOD CELLALGOSWITCH
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MO CellAlgoSwitch
Parameter ID DlCompSwitch
Parameter Name Downlink CoMP algorithms switch
NE BTS3900, BTS3900 LTE
MML Command MOD CELLALGOSWITCHLST CELLALGOSWITCH
Meaning Indicates the switch used to enable or disable the DL CoMP algorithm.
IsKey NO
Mandatory NO
Dynamic Attribute NO
Feature ID TDLAOFD-081411
Feature Name Inter-eNodeB DL CoMP based on Relaxed backhaul
Value Type Bit Field Type
GUI Value Range IntraDlCompSwitch(IntraDlCompSwitch), InterDlCompDcsSwitch(InterDlCompDcsSwitch), InterDlCompCbfSwitch(InterDlCompCbfSwitch)
Enumeration Number/Bit IntraDlCompSwitch~0, InterDlCompDcsSwitch~1, InterDlCompCbfSwitch~2
Unit None
Actual Value Range IntraDlCompSwitch, InterDlCompDcsSwitch, InterDlCompCbfSwitch
Default Value IntraDlCompSwitch:Off, InterDlCompDcsSwitch:Off, InterDlCompCbfSwitch:Off
Recommended Value DlCompSwitch:Off
Initial Value Setting Source Engineering Design
Impact CellAlgoSwitch
Parameter Relationship If the InterDlCompCbfSwitch check box under the DlCompSwitch parameter is selected, the InterDlCompDcsSwitch check box cannot be cleared.
Access Read & Write
Service Interrupted After Modification No (And no impact on the UE in idle mode)
Interruption Scope N/A
Interruption Duration (min) N/A
Caution None
Validation of Modification The parameter modification has no impact on the equipment.
Impact on Radio Network Performance If the IntraDlCompSwitch check box is selected, the throughput of edge UEs in intra-eNodeB cells increases but the average throughput of a cell may decrease.If the InterDlCompDcsSwitch or InterDlCompCbfSwitch check box is selected, the throughput of edge UEs in inter-eNodeB cells in a cluster increases but the average throughput of a cell may decrease.If DL CoMP is disabled, the throughput of CEUs decreases due to co-channel interference.
Introduced in Version... BTS3900: V100R008C00BTS3900 LTE: V100R008C00
Enabling of DL CoMP (eRAN 8.1)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Inter- eNodeB DL CoMP Based on
Relaxed Backhaul (eRAN 8.1)
Inter-eNodeB DL CoMP based on relaxed backhaul corresponds to TDLAOFD-081411 Inter-eNodeB DL CoMP Based on Relaxed Backhaul. Inter-eNodeB DL CoMP based on relaxed backhaul requires that cells for DL CoMP be configured on different BBPs in the same BBU or different BBUs.
Intra-BBU inter-BBP DL CoMP
Inter-BBU inter-BBP DL CoMP
In inter-eNodeB DL CoMP based on relaxed backhaul, BBUs are interconnected using the existing IP
RAN or PTN. Coordination data is transmitted between eNodeBs over the eX2 interface. The eX2
interface shares the transport network with the X2 interface. Therefore, inter-eNodeB DL CoMP based
on relaxed backhaul must consider eX2 transmission bandwidth and transmission delay from coordinating cells to eNodeBs
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Inter- eNodeB DL CoMP Based on
Relaxed Backhaul (eRAN 8.1)
The following details the basic procedure for DL CoMP.
1.Planning of the centralized control node and configuration of the cluster
• Plan the centralized control node.You need to deploy a centralized control node for each cluster to enable transmission of signaling
messages and service data between the eNodeB and centralized control node.
• The centralized control node must be deployed on the UBBPd.
• The BBP on which the centralized control node is deployed can be specified by configuring
the BASEBANDEQM and EuCoSchCfg MOs.
• Add a cluster and cluster cell information.You can set the CLUSTER and CLUSTERCELL MOs to manage backup inter-eNodeB
DL CoMP coordinating cells.
• Configure parameters related to inter-eNodeB DL CoMP.You can determine the value of
the EuCoSchDLCoMPCfg.CordInfoEffDelay parameter based on the transmission delay, which indicates the delay between the
time when the eNodeB reports measurement information and the time when the coordination information received from the
centralized control node takes effect.
• You can set the EuCoSchDLCoMPCfg.InterEnbDlCompSwitch parameter to ON(On) to enable inter-eNodeB DL CoMP.
2.Enabling of DL CoMP
• Set the CellAlgoSwitch.DlCompSwitch parameter as described in Table 4-1.Table 4-1 Mapping between the transmission modes
and parameter settings
Transmission Mode Setting of the CellAlgoSwitch.DlCompSwitch Parameter
Inter-eNodeB DCS Select the InterDlCompDcsSwitch(InterDlCompDcsSwitch) check box.
Inter-eNodeB adaptive DL CoMP Select both the InterDlCompDcsSwitch(InterDlCompDcsSwitch) andInterDlCompCbfSwitch(InterDlCompCbfSwitch) check boxes.
• Set the CELLDLCOMPALGO.DlCompA3Offset parameter. It is recommended that this parameter be set to -12.
3. Selection of CoMP UEs and coordinating cells
• The eNodeB selects CoMP UEs based on the event A3 measurement results reported by UEs, RSRP difference between the serving and
neighboring cells, and RSRP in the neighboring cell.
• The centralized control node calculates the power pattern based on the RSRPs of the serving cell and interference neighboring cells reported by
UEs in each cluster and the load information. When the power pattern P in the neighboring cell of a CoMP UE equals 0, the cell can be selected
as the coordinating cell. When P equals 0, the neighboring cells are silent. At this time, the PDSCH does not transmit data.
4.Transmission by multiple cellsBased on the information about the CoMP UE, serving cell, and coordinating cell, the physical layer processes and transmits
PDSCH data of the CoMP UE on the antennas of the serving cell and coordinating cell, by performing JT, CBF, and/or DCS.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Selection of CoMP UEs and
Coordinating Cells
Cell 1
Cell 3Neighbor
Cell 2Serving
-90
dB
m
-9
3 d
Bm
-9
7 d
Bm
Serving Listed Listed
RSRP N – RSRP S > - 6-93 – (- 90) = - 3So -3 dB are greater than -6 dB which is meet with the criteria to perform DL CoMP
LST CELLDLCOMPALGO
-6 dB
The eNodeB first determines UEs that require and apply to multi-cell joint processing as follows:a) When the value of RSRP in the neighboring cell minus RSRP in the
serving cell is greater than the DL CoMP event A3 offset (recommended value: –12), the UE reports event A3.
b) The eNodeB selects a UE as the CoMP UE when both of the following conditions are met:The RSRP difference between the serving and neighboring cells is greater than the event A3 offset required by DL CoMP.The CQI reported by the UE is smaller than the threshold.
c) The eNodeB determines whether CoMP UEs are JT UEs, CBF UEs, or DCS UEs. JT UEs must be beamforming UEs
After selecting CoMP UEs, the eNodeB determines the coordinating cell as follows:a) Based on event A3 measurement report, the eNodeB selects a
maximum of two neighboring cells whose RSRP values meet the requirement specified by the CellDlCompAlgo.DlCoMPA3Offsetparameter and are the largest.
b) CoMP UEs apply for SRS resource reconfiguration on the reserved SRS resources of the cells selected in .a.
c) After the SRS resource reconfiguration application succeeds, CoMP UEs request that the serving cell sends an RRC reconfiguration message to reconfigure SRS resources for CoMP UEs. For intra-BBP DL CoMP, a neighboring cell with SRS resources reconfigured successfully is selected as the coordinating cell. For inter-eNodeB DL CoMP, a neighboring cell with SRS resources reconfigured successfully and the power pattern P equal to 0 is selected as the coordinating cell.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Downlink Transmission by Multiple Cells
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Joint Transmission (JT)
In JT mode, all cells in a coordinating cluster transmit PDSCH data to CEUs to obtain power gains and array gains. In JT
implementation, CoMP UEs must support beamforming.
•Cell 2 obtains the weight of UE 1 based on the SRS measurement results. Cell 1 and cell 2 use the same RB resources to simultaneously transmit the
weighted PDSCH data to UE 1.
•UE 1 receives the same PDSCH data from cell 1 and cell 2 simultaneously.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Coordinated Beam Forming (CBF)
CBF coordinates the beam direction of UEs in intra-frequency neighboring cells so that UEs close to the cell center help CEUs in neighboring cells to avoid beam interference. In this way, the spectral efficiency of CEUs is improved, and the average cell throughput is not obviously affected. In CBF implementation, coordinating UEs must support beamforming.
The characteristics of normal beamforming and CBF are as follows:
• In normal beamforming mode, each cell independently processes PDSCH data and calculates the optimal weight based on its performance regardless of other cells. Therefore, interference may be strong to UEs allocated the same time and frequency resources in different cells.
• In CBF mode, the eNodeB preferentially selects coordinating UEs with the transmission mode of TM7, TM8, or TM9 without PMI and calculates the channelcorrelation between coordinating UEs and CoMP UEs. Then, UEs whose channel correlation meets requirement are paired and the weights of coordinating UEs are adjusted to be orthogonal. Therefore, interference to CoMP UEs decreases.
UE 1 is paired with UE 2 in cell 2. With CBF
processing, con-channel interference from
cell 2 to UE 1 decreases.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Dynamic Coordinated Scheduling (DCS)
In the case of RBs interfered with by intra-frequency neighboring cells, DCS does not schedule data of other UEs to achieve three purposes: (1) decrease co-channel interference to CoMP UEs; (2) improve interference suppression performance of CEUs; (3) increase the spectral efficiency of CEUs.
the eNodeB serving cell 1 transmits processed PDSCH data to UE 1, but the eNodeB serving cell 2 does not schedule data on the same RB. Therefore, UE 1 only receives PDSCH data from cell 1, reducing interference from cell 2 to cell 1
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Network Planning & Network Impact
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
General Requirement
•Before deploying DL CoMP, ensure that the live network meets the following
requirements:DBS3900 is used to provide contiguous intra-frequency coverage.
•All cells work at the same bandwidth other than 5 MHz.
•All the cells use the same frequency, uplink-downlink subframe configuration, and special
subframe configuration.
•Neighbor relationships have been configured.
In addition to these general requirements, the following describes the specific planning
requirements for DL CoMP deployment.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Planning for Inter-eNodeB DL CoMP Based
on Relaxed Backhaul
1. Plan the cluster.
Principles:
• The cells on the same BBP must be configured in the same cluster.
• The cells in the same cluster provide contiguous coverage.
• A maximum of 36 cells can be configured in each cluster under the same centralized control node. The number of cells in a
cluster depends on the transmission bandwidth reserved by the eNodeB for CoMP information transmission, which is about
2.5 Mbit/s.For example, if the transmission bandwidth reserved for inter-eNodeB DL CoMP is 15 Mbit/s, each cluster under
a centralized control node can include a maximum of nine cells. Three of them are established on the BBP on which the
centralized control node is deployed and do not occupy transmission bandwidth resources.
• 15 Mbit/s/2.5 Mbit/s + 3 = 9
Methods:
• Select the hotspot area. Select an area in which the cell load in busy hours exceeds the recommended value 10%.
• Determine cells in the cluster.a. Analyze engineering parameters in the hotspot area using network planning tools and
check the cell locations in the hotspot area. Plan the cells that are geographically near each other in a cluster.
• b. Measure the transmission delay from cells to the centralized control node. Cells of which the transmission delay is
shorter than or equal to 2 ms are added to the cluster.
2. Plan the centralized control node based on the following principles:• Preferentially select eNodeBs and BBPs with light service load.• Preferentially select eNodeBs with large eX2 transmission bandwidth.• Preferentially select eNodeBs to which the transmission delays from coordinating cells are balanced and shorter than or equal to 2 ms.• Multiple clusters can be configured under the same centralized control node.
3. Plan the transmission bandwidth between eNodeBs in a cluster.After eNodeBs in a cluster are determined, an additional bandwidth of 15 Mbit/s is added when calculating transmission bandwidth between eNodeBs to ensure that inter-eNodeB DL CoMP takes effect. For example, if there are three eNodeBs (eNodeB 1, eNodeB 2, and eNodeB 3) in a cluster, an additional bandwidth of 15 Mbit/s must be added to the transmission bandwidths between eNodeB 1 and eNodeB 2, between eNodeB 1 and eNodeB 3, and between eNodeB 2 and eNodeB 3.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Transmission eX2 Bandwidth
4
Gb
ps
There is 15 Mbps should be reserved as
the capacity of transmission between
eNB for DL CoMP
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MML Command
Intra-BBP DL CoMP (for Three Cells)
//Enabling DL CoMP for cell 0, cell 1, and cell 2
MOD CELLALGOSWITCH:LocalCellId=0,DlCompSwitch=IntraDlCompSwitch-1,HarqAlgoSwitch=TddAckFbModeCfgOptSwitch-1, DLSCHSWITCH=TailPackagePriSchSwitch-1;
MOD CELLALGOSWITCH:LocalCellId=1,DlCompSwitch=IntraDlCompSwitch-1,HarqAlgoSwitch=TddAckFbModeCfgOptSwitch-1, DLSCHSWITCH=TailPackagePriSchSwitch-1;
MOD CELLALGOSWITCH:LocalCellId=2,DlCompSwitch=IntraDlCompSwitch-1,HarqAlgoSwitch=TddAckFbModeCfgOptSwitch-1, DLSCHSWITCH=TailPackagePriSchSwitch-1;
//Setting DL CoMP event A3 offset for cell 0, cell 1, and cell 2
MOD CELLDLCOMPALGO:LocalCellId=0,DlCompA3Offset=-12;
MOD CELLDLCOMPALGO:LocalCellId=1,DlCompA3Offset=-12;
MOD CELLDLCOMPALGO:LocalCellId=2,DlCompA3Offset=-12;
TailPackagePriSchSwitch: Indicates the switch that controls the scheduling of downlink connected tail packages in the bearer. If this switch is turned on, the connected tail package is scheduled preferentially in the next TTI, which reduces the delay and increases the transmission rate. If this switch is turned off, the scheduling strategy of the connected tail package is the same as other downlink subframes. This switch is dedicated to LTE TDD cells.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MML Command
Inter-eNodeB DL CoMP (for Three Cells Under Three eNodeBs)
The following commands are required only for the eNodeB in which the BBP is configured as the centralized control node.//Adding baseband equipmentADD BASEBANDEQM:BASEBANDEQMID=2,BASEBANDEQMTYPE=ULDL,UMTSDEMMODE=NULL,SN1=2;//Deploying a centralized control node on the specified baseband equipmentMOD EUCOSCHCFG:PRTNODEBASEBANDEQMID=2,WORKMODE=COORDINATED_SCHEDULING_ONLY;//Adding a clusterADD CLUSTER:ClusterId=2;//Adding a cell to the clusterADD CLUSTERCELL:ClusterId=2,Mcc="460",Mnc="01",eNodeBId=32,CellId=1;ADD CLUSTERCELL:ClusterId=2,Mcc="460",Mnc="01",eNodeBId=33,CellId=1;ADD CLUSTERCELL:ClusterId=2,Mcc="460",Mnc="01",eNodeBId=34,CellId=1;//Configuring the inter-eNodeB DL CoMP information effective delay and turning on the inter-eNodeB DL CoMP algorithm switchMOD EUCOSCHDLCOMPCFG:CORDINFOEFFDELAY=7,INTERENBDLCOMPSWITCH=ON;
The following commands need to be executed for each eNodeB.//(Optional) Configuring the eX2 interfaceFor details, see ex2 Self-Management Feature Parameter Description.//Setting the DL CoMP event A3 offsetMOD CELLDLCOMPALGO:LocalCellId=1,DlCompA3Offset=-12;//Setting the CSPC CQI filter coefficientMOD CELLCSPCPARA:LOCALCELLID=1,CSPCCQIFILTERCOEFF=25;//Enabling DL CoMPMOD CELLALGOSWITCH:LocalCellId=1,DlCompSwitch=IntraDlCompSwitch-1&InterDlCompCbfSwitch-1&InterDlCompDcsSwitch-1,HarqAlgoSwitch=TddAckFbModeCfgOptSwitch-1,DLSCHSWITCH=TailPackagePriSchSwitch-1;
TailPackagePriSchSwitch: Indicates the switch that controls the scheduling of downlink connected tail packages in the bearer. If this switch is turned on, the connected tail package is scheduled preferentially in the next TTI, which reduces the delay and increases the transmission rate. If this switch is turned off, the scheduling strategy of the connected tail package is the same as other downlink subframes. This switch is dedicated to LTE TDD cells.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
System Capacity
Increases the downlink throughput of cell edge users (CEUs) without decreasing the average cell throughput.When there is only one CoMP UE in the serving cell, the MCS order in the non-beneficial subframes of CoMP UEs decreases. However, the expected downlink throughput gains for CEUs can still be achieved
Network Performance
• DL CoMP increases the handover success rate and reduces downlink throughput decreases during handovers.After DL CoMP is enabled, MCS orders of CEUs increase, which improves the edge coverage, increases the handover success rate of CEUs, and reduces the possibility that CEU throughput decreases during handovers.
• DL CoMP has a negative impact on the scheduling fairness of CEUs.The scheduling priority of CEUs decreases because the average CEU throughput increases.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Related Counter
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
53
Counters
Counter ID Counter Name Counter Description Feature ID Feature Name
1526727444 L.ChMeas.PDSCH.MCS.0 Number of times MCS index 0 is scheduled on the PDSCH
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002025LBFD-001005TDLBFD-002025TDLBFD-001005
Basic SchedulingModulation: DL/UL QPSK, DL/UL 16QAM, DL 64QAMBasic SchedulingModulation: DL/UL QPSK, DL/UL 16QAM, DL 64QAM
1526727475 L.ChMeas.PDSCH.MCS.31 Number of times MCS index 31 is scheduled on the PDSCH
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002025LBFD-001005TDLBFD-002025TDLBFD-001005
Basic SchedulingModulation: DL/UL QPSK, DL/UL 16QAM, DL 64QAMBasic SchedulingModulation: DL/UL QPSK, DL/UL 16QAM, DL 64QAM
1526728261 L.Thrp.bits.DL Total downlink traffic volume for PDCP SDUs in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002008TDLBFD-002008LBFD-002025TDLBFD-002025
Radio Bearer ManagementRadio Bearer ManagementBasic SchedulingBasic Scheduling
1526729005 L.Thrp.bits.DL.LastTTI Downlink traffic volume sent in the last TTI for PDCP SDUs before the buffer is empty
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002008TDLBFD-002008LBFD-002025TDLBFD-002025
Radio Bearer ManagementRadio Bearer ManagementBasic SchedulingBasic Scheduling
1526729015 L.Thrp.Time.DL.RmvLastTTI
Data transmit duration except the last TTI before the downlink buffer is empty
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002008TDLBFD-002008LBFD-002025TDLBFD-002025
Radio Bearer ManagementRadio Bearer ManagementBasic SchedulingBasic Scheduling
1526729056 L.Thrp.DL.BitRate.Samp.Index0
Number of samples with the downlink throughput ranging within index 0
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002008TDLBFD-002008LBFD-002025TDLBFD-002025
Radio Bearer ManagementRadio Bearer ManagementBasic SchedulingBasic Scheduling
1526729065 L.Thrp.DL.BitRate.Samp.Index9 Number of samples with the downlink throughput ranging within index 9
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002008TDLBFD-002008LBFD-002025TDLBFD-002025
Radio Bearer ManagementRadio Bearer ManagementBasic SchedulingBasic Scheduling
1526729463 L.ChMeas.PRB.DL.DLComp.Used.Avg
Average number of PRBs used by downlink CoMP UEs in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: TDLAOFD-00100103TDLAOFD-003002
Intra-eNodeB DL CoMP in DCS ModeIntra-eNodeB DL CoMP in Adaptive Mode
1526729464 L.Traffic.User.DLComp.Avg Average number of downlink CoMP UEs in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: TDLAOFD-00100103TDLAOFD-003002
Intra-eNodeB DL CoMP in DCS ModeIntra-eNodeB DL CoMP in Adaptive Mode
1526729465 L.Traffic.User.DLComp.Max Maximum number of downlink CoMP UEs in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: TDLAOFD-00100103TDLAOFD-003002
Intra-eNodeB DL CoMP in DCS ModeIntra-eNodeB DL CoMP in Adaptive Mode
1526737752 L.Traffic.User.InterEnbDLComp.Avg Average number of DL CoMP UEs in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: TDLAOFD-00100103TDLAOFD-003002
Intra-eNodeB DL CoMP in DCS ModeIntra-eNodeB DL CoMP in Adaptive Mode
1526737753 L.ChMeas.PRB.InterEnbDLComp.Used.Avg
Average number of PRBs used for inter-eNodeB DL CoMP scheduling in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: TDLAOFD-00100103TDLAOFD-003002
Intra-eNodeB DL CoMP in DCS ModeIntra-eNodeB DL CoMP in Adaptive Mode
1526737755 L.Thrp.bits.DL.BorderUE Downlink PDCP-layer traffic volume sent for CEUs in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002025TDLBFD-002025
Basic SchedulingBasic Scheduling
1526737758 L.Thrp.bits.DL.LastTTI.BorderUE Downlink PDCP-layer traffic volume sent in the last TTI for CEUs before the buffer is empty in a cell
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002025TDLBFD-002025
Basic SchedulingBasic Scheduling
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Counters
1526737759 L.Thrp.Time.DL.RmvLastTTI.BorderUE
Data transmission duration for CEUs except the last TTI before the downlink buffer is empty
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LBFD-002025TDLBFD-002025
Basic SchedulingBasic Scheduling
1526737775 L.E-RAB.NormRel.RelaxedBackhaulCAUser
Number of normal E-RAB releases for UEs in the downlink relaxed-backhaul-based CA state
Multi-mode: NoneGSM: NoneUMTS: NoneLTE: LAOFD-00100101LAOFD-00100102LAOFD-070201LAOFD-070202LAOFD-080202LAOFD-080207LAOFD-080208TDLAOFD-00100111TDLAOFD-001002TDLAOFD-00100102TDLAOFD-081411TDLAOFD-070201
Intra-Band Carrier Aggregation for Downlink 2CC in 20MHzInter-Band Carrier Aggregation for Downlink 2CC in 20MHzFlexible CA from Multiple CarriersInter-eNodeB CA based on Coordinated BBUCarrier Aggregation for Uplink 2CCCarrier Aggregation for Downlink 3CC in 40MHzCarrier Aggregation for Downlink 3CC in 60MHzIntra-band Carrier Aggregation for Downlink 2CC in 30MHzCarrier Aggregation for Downlink 2CC in 40MHzSupport for UE Category 6Inter-eNodeB DL CoMP based on Relaxed backhaulFlexible CA from Multiple Carriers
Company Confidential - Pinnacle Learning Center
6.3 LTE Carrier Aggregation eRAN 8.0
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Introduction
Carrier Aggregation Setting on U2000:
Carrier Aggregation Sample Trial
CA with Default Configuration
CA with PCC Anchoring
CA with PCC Anchoring & HOwithSCCCfg
Carrier Aggregation DL Throughput Comparison
Carrier Aggregation Counter Measurement
Carrier Aggregation Parameter Optimization
Content
2
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
57
PCell
A primary serving cell (PCell) is the cell on which a CA UE camps. In the PCell, the CA UE works in the same way as it does in
a 3GPP Release 8 or Release 9 cell. The physical uplink control channel (PUCCH) of the UE exists only in the PCell.
SCell
A secondary serving cell (SCell) is a cell that works at a different frequency from the PCell. The eNodeB configures an SCell
for a CA UE through an RRC Connection Reconfiguration message. An SCell provides the CA UE with more radio resources.
The CA UE can have only downlink SCells or both downlink and uplink SCells.
CC
Component carriers (CCs) are the carriers that are aggregated for a CA UE.
PCC
The primary component carrier (PCC) is the carrier of the PCell.
SCC
A secondary component carrier (SCC) is the carrier of an SCell.
PCC Anchoring
During PCC anchoring, the eNodeB selects a high-priority cell as the PCell for the UE.
Abbreviations
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Event A2
Event A2 indicates that the signal quality of the serving cell becomes lower than a specific threshold.
Event A3
Event A3 indicates that the signal quality of the PCell's neighboring cell becomes higher than that of the Pcell.
Event A4
Event A4 indicates that the signal quality of a neighboring cell becomes higher than a specific threshold.
Event A5
Event A5 indicates that the signal quality of the PCell becomes lower than a specific threshold and the signal quality of a neighboring cell
becomes higher than another threshold.
Event A6
Event A6 indicates that the signal quality of an SCell's intra-frequency neighboring cell becomes higher than that of the SCell. If the
eNodeB receives an event A6 report, it changes the SCell while keeping the PCell unchanged.
The entering condition for event A6 is as follows: Mn + Ocn - Hys > Ms + Ocs + Off. The following explains the variables involved:Mn is
the RSRP measurement result of a neighboring cell.
Ocn is the cell-specific offset for an intra-frequency neighboring cell. The offset is specified by
the EutranIntraFreqNCell.CellIndividualOffset parameter.
Hys is the hysteresis for event A6. The value of this variable is always 0.
Ms is the RSRP measurement result of the serving cell.
Ocs is the cell-specific offset for the serving cell. The offset is specified by the Cell.CellSpecificOffset parameter.
Off is the offset for event A6. The offset is specified by the CaMgtCfg.CarrAggrA6Offset parameter.
Related Event
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Introduction
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation- Introduction
3GPP requires LTE-Advanced networks to provide a downlink peak data rate of 1 Gbps However, radio spectrum resources are scarce, and many operators own only non-contiguousspectrums. Due to limited contiguous bandwidth on the spectrum, the 1 Gbps data raterequirement is hard to meet.To deal with this situation, 3GPP TR 36.913 Release 10 introduced CA to aggregate contiguousor non-contiguous carriers in LTE-Advanced networks. CA achieves wider bandwidths (to amaximum of 100 MHz) and higher spectral efficiency of non-contiguous spectrums.
Based on the frequency bands of component carriers (CCs), CA is classified as follows:
1) Intra-band CAIntra-band CA aggregates two carriers in the same frequency band for downlinktransmission to a UE. It is further classified into contiguous CA
2) Inter-band CAInter-band CA aggregates two carriers in different frequency bands for downlinktransmission to a UE
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation – HUAWEI Limitation
2
Scenario 1
Scenario 2
Scenario 3
Scenario 4
Scenario 5
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation – Radio Protocol Stack
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Signaling Flow
(UE Capability Information)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Signaling Flow
(UE Capability Information)
UE Cat 6
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Signaling Flow
(RRC Connection Reconfiguration)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Signaling Flow
(RRC Connection Reconfiguration)
PCell : 39475
SCell : 39325
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Establishment - 2CC
(1) is the command (RRC message) to tell the UE to configure the Radio Stack (PHY, MAC) to establish the aggregated communication (Carrier Aggregration). You need to look into every details of RRC Connection Configuration message to fully understand this step.
(2) is the HARQ ACK from UE saying 'I got a PDSCH (carrying RRC Connection Reconfiguration).
(3) is the step where both UE and Network performs the necessary setup for Carrier Aggregation.
(4) is the step where UE send SR saying 'I need a physical resource to send some data (PUSCH carrying RRC Connection Reconfiguration Complete message in this case)'.
(5) is the step where Network allocate resource in response to step (4).
(6) is the step where UE reporting to network 'I am done with the setup and the setup is successful'. At this step, the setup has been established only at RRC layer and MAC layer for the second carrier is not yet activated.
(7) is the step where Network send a command to UE saying 'Now activate MAC layer for the second carrier as well'.
(8) indicate the status where MAC/PHY for both carrier are fully activated.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Setting on U2000
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
License Required
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
How to Configure CA 2CC Scenario 1
1) There should be have two different carrier on co-sector.
F1
F2
2) Each carrier should have Interfreq NRT (F1<>F2).3) Change No Remove Indicator, to prevent ANR delete relationship between carrier.
(F1 to F2) (F2 to F1)
LST CELL
LST EUTRANINTERFREQNCELL
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
How to Configure CA 2CC Scenario 1
3) Create CA GROUP Identity as reference ID of this two cell’s as on unity
LST CAGROUP
Sect IDEARFCN F1
Local Cell ID
F1
EARFCN F2
Local Cell ID F2
CAGROUP Identity
1-Alpha 39475 0 39325 9 0
1-Beta 39475 1 39325 10 1
1-Gamma 39475 2 39325 11 2
2-Alpha 39475 3 39325 12 3
2-Beta 39475 4 39325 13 4
2-Gamma 39475 5 39325 14 5
3-Alpha 39475 6 39325 15 6
3-Beta 39475 7 39325 16 7
3-Gamma 39475 8 39325 17 8
Alpha Alpha Alpha
Beta Beta BetaGammaGammaGamma
1 2 3
Note: CA Group ID follow Local Cell ID of first carrier, in order to easy for audit in the future and not confuse to determine which ID are available or not.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Creating CAGROUP
CA GROUP Id chose from first carrier Local CID
Chose TDD Same SubframeAlignment Configuration
Chose TDD
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
How to Configure CA 2CC Scenario 1
4) After get CAGROUP ID, now bonding this two cells into one CAGROUPCELL
LST CAGROUPCELL
Sect IDEARFCN F1
Local Cell ID
F1
EARFCN F2
Local Cell ID F2
CAGROUP Identity
1-Alpha 39475 0 39325 9 0
1-Beta 39475 1 39325 10 1
1-Gamma 39475 2 39325 11 2
2-Alpha 39475 3 39325 12 3
2-Beta 39475 4 39325 13 4
2-Gamma 39475 5 39325 14 5
3-Alpha 39475 6 39325 15 6
3-Beta 39475 7 39325 16 7
3-Gamma 39475 8 39325 17 8
Alpha Alpha Alpha
Beta Beta BetaGammaGammaGamma
1 2 3
Note: CA Group ID follow Local Cell ID of first carrier, in order to easy for audit in the future and not confuse to determine which ID are available or not.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Creating CAGROUPCELL
CA GROUP Id that we have creating before on the
same Sector
Local CID of 1st & 2nd Carrier should be register in the same
CA GROUP ID
eNB ID of cell that we want to Bonding
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
1. Configuration of CA groups and CA-related parameters. A CA group is a set of cells that
can be carrier-aggregated for a CA UE.
2. Initial RRC connection setup for a CA UE in a cell, that is, in the primary serving cell
(PCell). The PCell is the cell on which the UE camps.
3. Secondary serving cell (SCell) configuration. If blind SCellconfiguration is disabled, the
eNodeB delivers A4 measurement configurations to the UE and, based on measurement
reports from the UE, configures an SCell for the UE. If blind SCellconfiguration is enabled,
the eNodeB configures an SCell for the UE without initiating measurements. The eNodeB
configures an SCell through an RRC Connection Reconfiguration message. An SCell
provides the CA UE with more radio resources.
4. SCell activation or deactivation based on the traffic volume that is monitored in real time.
Overall CA Procedure
Current configuration not based on traffic volume
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
If this Switch turn ON, Source Cell will send Handover Information to the Target Cell during HO
Carrier Aggregation Setting U2000
LST ENODEBALGOSWITCHCurrent setting CA UE not implement PCC
Anchoring since there is no wider Bandwidth in BOLT! LTE Network
SCC activation and deactivation not related with the Traffic Volume
Only for LTE FDD Cells, whether to to use Frequency Prioity or Based on CAGROUP
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Setting U2000
LST CAMGTCFG(1)
(2)
(3)
(4)
(5)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
78
Initial Access Priority
1) Chase when UE do camp on to F1 as the PCC
2) Chase when UE do camp on to F2 as the PCC
With PCCAnchoring if we setting F1 as the highest priority
Without PCCAnchoring
F1 will be have highest Priority as PCC
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
TDLOFD-001032 Intra-LTE Load Balancing
CA requires special treatment in mobility load balancing (MLB) execution.
When an eNodeB selects UEs for inter-frequency measurements for PRB usage-based or
UE quantity-based inter-frequency MLB, the eNodeB filters out CA UEs. CA UEs will not
perform inter-frequency measurements or be handed over to inter-frequency neighboring
cells with the same azimuth as the source cell.
Impacted Features
TDLBFD-002017 DRX
For a CA UE, the PCell and SCell must use the same DRX configurations.
TDLOFD-001001 DL 2x2 MIMO
Sounding reference signals (SRSs) are measured in the PCells of CA UEs. Therefore,
beamforming is available in transmission mode 7 (TM7) and TM8 for PCells. In SCells,
however, SRSs are not measured and beamforming is unavailable. The eNodeB uses TM1
or TM3 in SCells, regardless of parameter settings. TM1 applies when a single antenna
port is used for the SCell. For details about transmission mode selection, see MIMO Feature
Parameter Description.
TDLOFD-001003 DL 4x2 MIMO and TDLOFD-001060 DL 4x4 MIMO
UEs in use cannot receive data using four antennas while using CA. There are no plans for
commercial use of UEs that can receive data using four antennas while using CA. If this
type of UEs will be available in the future, the UE performance needs to be determined by
tests.
TDLOFD-001016 VoIP Semi-persistent Scheduling
According to section 5.10 in 3GPP TS 36.321, semi-persistent scheduling can be used only
on the PCCs of CA UEs.
TDLOFD-002001 Automatic Neighbour Relation (ANR) and TDLOFD-002002 Inter-
RAT ANR
To reduce algorithm complexity, Huawei eNodeBs do not instruct CA UEs to perform
measurements for ANR when CA is enabled. In the early stage of LTE networkconstruction, there are only a few CA UEs in the network, and ANR can be performed with
the assistance of non-CA UEs.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Sample Trial
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
PCC Anchoring Strategy (CA Group Cell)
F1 F1 F1
Freq Cover BW (MHz) PriorityA4 PCC (dBm)
F1 (39475) Macro 15 7 -109
F2 (39325) Macro 15 0 -105
F1
PCC Anchoring
F2 F2
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
PCC Anchoring Strategy (CA Group
Cell) cont’d
Time Domain
-105
-110
-115
-120
-125
-130
-135
PCell A4 RSRP
Threshold(dBm)
Default
-105 (Priority 0)
-120 (QrxlevMin)
-105 (Priority 0)
• With default configuration
UE CA find PCell
randomly due to all
Carrier has same priority
and same A4 PCC
Threshold.
• Considering Device
RSRP Quality (Samsung
Smartphone) are lower
than Mifi, adjust
handover trigger are
required.
RSRP
-100
Both carrier have equal priority as PCell
F1F2
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
PCC Anchoring Strategy
(CA Group Cell) cont’d
Time Domain
-105
-110
-115
-120
-125
-130
-135
-109 (Priority 7)
-120 (QrxlevMin)
-105 (Priority 0)
PCell A4 RSRP
Threshold(dBm)
Proposed
• To make F1 as basic
layer of PCC
Anchoring, need to
make F1 Priority more
higher than F2.
• Considering Device
quality of Samsung
Smartphone, PCC A4
Threshold need to be
decrease into -109
dBm.
RSRP
-100
Easy to enter F1 forPCC Anchoring
F1F2
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Mobility Strategy
F1 F1 F1F1
SCell DeactivationSCell Activation
F2 F2 F2
PCell Camping
• First time UE power ON, UE chose F1 based on PCC Anchoring procedure which have higher priority under one CA
Group Cell.
• When Dual Carrier with CA coverage are missing, SCC assignment deactivated by eNB through CAMGTCFG A2 & A4
value. PCC Still active on F1.
• In some area which threshold of A2EventA4 of InterfreqHOGroup are higher than default value (-109 dBm), CA UE will
do Interfreq Handover to another frequency and PCell will move to F2.
• When SCell RSRP are meet with Carrier Aggregation A4 Threshold, Carrier Aggregation are activated. In this condition
PCC will be keep on Last carrier since PCC Anchoring only applicable for UE in Initial Access procedure only.
• SCC will be deactivate when performing IntrafreqHO/InterfreqHO. To give better performance on SCC, need to be
activate specific switch under MO ENODEBALGOSWITCH for HOwithSCCCfg.
EventA3-Intrafreq
EventA3-Intrafreq
Case of A2 high
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
U2000 Setting
ON
ON
7
7
7
(1)
(3)
(2)
-109
-109
-109
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Duration Performance (Mobility Test)D
efau
ltP
CC
An
cho
rin
g
PC
C A
nch
ori
ng
&
HO
wit
hSC
CC
fg
From the comparison of 3 configuration, PCC Anchoring with SCC Handover Information can give better duration of PCC & SCC Initial Setup
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Connection Setup Performance
(Static Test)
RRC Setup: 100%RRCReconfig CA: 100%
RRC Setup: 100%RRCReconfig CA: 100%
RRC Setup: 100%RRCReconfig CA: 100%
Def
ault
PC
C A
nch
ori
ng
PC
C A
nch
ori
ng
&
HO
wit
hSC
CC
fg
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MAC DL Throughput (CA)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
MAC DL Throughput (CC1 & CC2)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Sample TrialCarrier Aggregation with Default Configuration
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
PCell EARFCN
With default configuration, PCC distribution more prefer on F2. The test conduct with ADP method.F1 PCC : 6.6%F2 PCC : 93.4%
UE prefer to attach to F2 during Initial Access
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
SCell Activation
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Sample TrialCarrier Aggregation with PCC Anchoring Configuration
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
PCell EARFCN
With PCC Anchoring configuration, PCC distribution more prefer on F1. The test conduct with ADP method.F1 PCC : 94%F2 PCC : 6%
UE prefer to attach to F1 during Initial Access
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
SCell Activation
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Handover Information
Not much Information related with the SCC
Measurement
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Sample TrialCarrier Aggregation with PCC Anchoring Configuration & HOwithSCCCfg
Configuration
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Hedex Remarks
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
PCell EARFCN
With PCC Anchoring configuration, PCC distribution more prefer on F1. The test conduct with ADP method.F1 PCC : 99.2%F2 PCC : 0.8%
UE prefer to attach to F1 during Initial Access
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
SCell Activation
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Handover Information
RRC-ReconfigCA-Init
IntraFreq HO
Complete Measurement Report Send by Source Cell to the Target Cell & also to
the UE (A1, A2 & A4)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Handover Information
RRC-ReconfigCA-Init
IntraFreq HO
Complete Measurement Report Send by Source Cell to the Target Cell & also to
the UE (A1, A2 & A4)
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
If HoWithSccCfgSwitch under the ENodeBAlgoSwitch.CaAlgoSwitch parameter is off,
then:
The source eNodeB delivers an RRC Connection Reconfiguration message to remove the
SCell and performs an intra- or inter-frequency handover for the UE. After the UE is handed
over to the target cell, the target eNodeB configures an SCell for the UE
If HoWithSccCfgSwitch under the ENodeBAlgoSwitch.CaAlgoSwitch parameter is on,
then:
The source eNodeB includes the current SCell information in the IE sCellToAddModList
of the handover request message, which also contains the IE CandidateCellInfoList, sent
to the target eNodeB. The target eNodeB acquires candidate SCells from the IE
CandidateCellInfoList, arranges them in descending order of priority and RSRP (if
priorities are the same), and determines the new SCell to be configured after the handover.
Then, the target eNodeB updates the IE sCellToAddModList with the new SCell
information and sends the updated information in the handover command to the source
eNodeB. The source eNodeB sends an RRC Connection Reconfiguration message that
contains the IEs mobilityControlInfo, sCellToReleaseList, and sCellToAddModList to
remove the original SCell and configure the new SCell during the handover.
If the SCell configuration fails, no SCell is configured for the UE that has been handed
over to the target cell. In this case, the target eNodeB performs an SCell configuration
Procedure.
Special Treatment of Handovers in CA
Scenarios:
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Summary of Trial
• With default value, all frequency have equal priority as the Pcell assignment for CA UE.
• With PCC Anchoring, one CA Group members can be selected as the higher priority Local Cell
ID as the main layer to performing PCell selection on the initial state only.
• SCC Activation only happen on the co-sect which have same azimuth and there is no HO in
Scell. Each time Handover Scell will be deactivated.
• To make better measurement report during Handover of CA UE, need to use HO with SCC
Configuration. eNodeB includes the IE reportAddNeighMeas in the handover-related A3, A4, and
A5 measurement configurations delivered to CA UEs.
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation DL Throughput Comparison
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
CA TARGET AREA
CA Implemented
CA not Implemented yet
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
CA Drive Test Performance
Non CA RSRP CA RSRPAvailability Issue (Mesjid III)
Device info :- Non CA user =
MF 90- CA user =
Galaxy Note 4
0.12 %
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
CA Drive Test Performance
CA SINR
Availability Issue (Mesjid III)
Non CA SINR
Device info :- Non CA user =
MF 90- CA user =
Galaxy Note 4
0.43 %
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
CA Drive Test Performance
CA DL ThroughputNon CA DL Throughput
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
CA Drive Test Performance
CA DL Throughput
Non CA DL Throughput
117 %
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
CA Drive Test Performance
Drive Test Result Summary
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Counter Measurement
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Monitoring by Counter
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Average DL CA Throughput
($'L.Thrp.bits.DL.CAUser'/1000)/($'L.Thrp.Time.DL.CAUser')
Monitoring by Counter
CA DL PCell PRB Utilization%
$'L.ChMeas.PRB.DL.PCell.Used.Avg'/@'PRBAVAILABLEDL'
CA DL SCell PRB Utilization%
$'L.ChMeas.PRB.DL.SCell.Used.Avg'/@'PRBAVAILABLEDL'
CA Drop Rate
$'L.E-RAB.AbnormRel.CAUser'/($'L.E-RAB.AbnormRel.CAUser'+$'L.E-RAB.NormRel.CAUser')
CA DeAct%
$'L.CA.DLSCELL.DEACT.SUCC '/$'L.CA.DLSCELL.DEACT.ATT '
CA HOSR
$'L.HHO.ExecSuccOut.CAUser.PCC'/$'L.HHO.ExecAttOut.CAUser.PCC'
CA SCell Activation%
$'L.CA.DLSCELL.ACT.SUCC '/$'L.CA.DLSCELL.ACT.ATT '
CA SCell Add%
$'L.CA.DLSCELL.ADD.SUCC '/$'L.CA.DLSCELL.ADD.ATT '
CA SCell AddBlind%
$'L.CA.DLSCELL.ADD.BLIND.SUCC '/$'L.CA.DLSCELL.ADD.BLIND.ATT '
CA SCell Add Meas%
$'L.CA.DLSCELL.ADD.MEAS.SUCC '/$'L.CA.DLSCELL.ADD.MEAS.ATT '
CA SCell Mod%
$'L.CA.DLSCELL.MOD.SUCC '/$'L.CA.DLSCELL.MOD.ATT '
CA SCell RMV%
$'L.CA.DLSCELL.RMV.MEAS.SUCC '/$'L.CA.DLSCELL.RMV.MEAS.ATT '
CA SCell RMV Meas%
$'L.CA.DLSCELL.RMV.MEAS.SUCC '/$'L.CA.DLSCELL.RMV.MEAS.ATT '
Max DL Throughput CA User
($'L.Thrp.bits.DL.CAUser'/(1000))/$'L.Thrp.Time.DL.CAUser'
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Carrier Aggregation Parameter Optimization
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Parameter Optimization
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Thank You
Consulting | Training | ResearchCompany Confidential - Pinnacle Learning Center
MobileComm Professionals, Inc
Ray Khastur, ST.
Educational Background : Bachelor of Telecommunication Engineer, Telkom Institute of Technology (2006 –2010) JPPA-N Acceleration
Professional Experience : PI.Works, RAN Consultant (2014 ~ Present) China JIESAI, LTE Optimization Consultant (2014) Lintas Media Telekomunikasi, LTE RF Team Leader (2013 ~ 2014) HUAWEI Tech Investment, CWiL RNP/O Engineer (2011 ~ 2013) Transdata Global Network, CDMA RNO Engineer (2010 ~2011)
Achievements : RF Network Design & Planning First Commercial LTE Network in Indonesia (BOLT! Super 4G LTE)-2013 HUAWEI NPI & Post Launch Optimization BOLT! Super 4G LTE - 2014 PI.Works LTE Technical Expert for HUAWEI Environment LTE Planning & Optimization Trainer Floatway Certified-2013 LTE HUAWEI Trainer for Subcont-2016
Author