Post on 18-Jan-2016
Principles of HSUPAPrinciples of HSUPA
UMTS Network Planning Dept.
March 2007
Course ObjectivesCourse Objectives
Characteristics of HSUPA
MAC Layer and Physical Layer of HSUPA
Scheduling Principles of HSUPA
Power Control of HSUPA
After finishing this course, you
will be able to get familiar with:
Course time: 2 hours
ContentsContents
Training.huawei.com
Chapter 2 MAC Layer of HSUPA
Chapter 1 Characteristics of HSUPA
Chapter 3 Physical Layer of HSUPA
Chapter 4 Scheduling Principles of HSUPA
Chapter 5 Power Control of HSUPA
Limitation of R99 Uplinks and Characteristics of HSUPALimitation of R99 Uplinks and Characteristics of HSUPA
Long delay Low uplink rate Low cell uplink
capacity
Peak rate: 5.76 Mbps Uplink coverage improvement at
high rate: 20% - 50% Uplink capacity improvement: 30% -
100% Reduced delay Quick scheduling and
resource control Improved QoS
Characteristics of
HSUPA uplink
Characteristics of R99 uplink
Characteristics of HSUPACharacteristics of HSUPA
Important characteristics of Release 6 Multiple high-speed channels to receive signals from
NodeB They may come from different UEs or the same UE
Multi-user interference Multiple users transmit signals at the specified rate
and power based on quick scheduling
E-DPDCH
E-DPDCH
E-DPDCHE-DPDCH
Comparison Between R99 and HSUPAComparison Between R99 and HSUPA
Min. 10ms TTIMin. 2 ms (initial 10 ms) TTI
Slow resource request and allocation mechanism (at RNC)
Quick resource request and allocation mechanism (at NodeB)
Low-efficiency dedicated resources allocation
Dedicated resources allocation for delay-sensitive services
Conventional ARQ mechanism to implement high-layer retransmission
HARQ mechanism to implement fast retransmission in the physical layer
Multiplexing of transport channels to physical channels
Multiplexing of logical channels to the MAC layer
Release 99 HSUPA
Comparison Between HSUPA and HSDPAComparison Between HSUPA and HSDPA
HSDPA HSUPA
HARQ mechanism with fast retransmission in the physical layer
New high-speed downlink shared channels
Dedicated uplink channels with enhanced ability
Single serving cell (traffic channel without soft handover)
Soft handover is supported
Adaptive modulation/coding Fast power control
Multiple users share the power and code resources of NodeB
Multiple users cause RoT to raise and NodeB allocates resources among users
Types and Capabilities of HSUPA UETypes and Capabilities of HSUPA UE
For 10 ms TTI, the maximum rate will not exceed 2000 kbps.
ContentsContents
Training.huawei.com
Chapter 2 MAC Layer of HSUPA
Chapter 1 Characteristics of HSUPA
Chapter 3 Physical Layer of HSUPA
Chapter 4 Scheduling Principles of HSUPA
Chapter 5 Power Control of HSUPA
HSUPA Protocol StackHSUPA Protocol Stack
SM (Session M anagement)
GM M (Gprs M obility M anagement)
RRC(Radio Resource Control)
RLC(Radio Link Control)
M AC-es and M AC-d (M edium Access Control)
M AC-e
Physical Layer
Iub Interface P rotocols
Iu Interface P rotocols
UE Node B RNC SGSN
MAC-e and MAC-es are new entities in Release 6.
UE MAC StructureUE MAC Structure
Associated Downlink Signalling
E-DCH
MAC-d
FACH RACH
DCCH DTCH DTCH
DSCH DCH DCH
MAC Control
USCH ( TDD only )
CPCH ( FDD only )
CTCH BCCH CCCH SHCCH ( TDD only )
PCCH
PCH FACH
MAC-c/sh
USCH ( TDD only )
DSCH
MAC-hs
HS-DSCH Associated
Uplink Signalling
Associated Downlink Signalling
MAC-es / MAC-e
Associated Uplink
Signalling
Details of UE MAC-es/eDetails of UE MAC-es/e
MAC-es/e
MAC – Control
Associated Uplink Signalling E-TFC
(E-DPCCH)
To MAC-d
HARQ
Multiplexing and TSN setting E-TFC Selection
Associated Scheduling Downlink Signalling
(E-AGCH / E-RGCH(s))
Associated ACK/NACK signaling (E-HICH)
UTRAN MAC StructureUTRAN MAC Structure
FACH RACH
DCCH DTCH DTCH
DSCH
MAC Control
Iur or local
MAC Control
DCH DCH
MAC-d
USCH TDD only
MAC-c/sh
CPCH FDD only
CCCH CTCH BCCH SHCCH TDD only
PCCH
FACH PCH USCH TDD only
DSCH
MAC Control
HS- DSCH HS- DSCH
Associated Uplink Signalling
Associated Downlink Signalling
MAC-hs
Configuration without MAC-c/sh
Configurationwith MAC
Configuration with MAC-c/sh
E-DCH
Associated Uplink Signalling
Associated Downlink Signalling
MAC Control
MAC-es
MAC-e
MAC Control
Iub
c/sh
Details of NodeB Mac-eDetails of NodeB Mac-e
In the NodeB, there is an
MAC-e entity and an E-
DCH scheduler for each
UE. They process
HSUPA-related functions
in the NodeB.
MAC-e
MAC – Control
E-DCH
Associated Downlink Signalling
Associated Uplink
Signalling
MAC-d Flows
De-multiplexing
HARQ entity
E-DCH
Control (FFS)
E-DCH Scheduling (FFS)
Details of RNC Mac-esDetails of RNC Mac-es
In the SRNC, there is an
MAC-es entity for each
UE. The MAC-es sublayer
processes the E-DCH-
related functions that are
not covered by the MAC-e
entity in the NodeB.
MAC-es
MAC – Control
From MAC-e in NodeB #1
To MAC-d
Disassembly
Reordering Queue Distribution
Reordering Queue Distribution
Disassembly
Reordering/ Combining
Disassembly
Reordering/ Combining
Reordering/ Combining
From MAC-e in NodeB #k
MAC-d flow #1 MAC-d flow #n
MAC-es/e PDUMAC-es/e PDU
MAC-d PDU MAC-d PDU MAC-d PDU
MAC-es SDU MAC-es SDU TSN1 N1 DDI1 MAC-es SDU
MAC-d PDUs coming from one Logical Channel
N1 MAC-es SDUs of size and LCh indicated by DDI1
MAC-es PDU1
DDI1 N1 DDI2 N2
DDI1 N1 DDI2 N2 DDIn Nn DDI0 (Opt)
MAC-es PDU1
MAC-es PDU2 MAC-es PDUn
MAC-es PDU2 MAC-es PDU1 DDIn Nn MAC-es PDUn
MAC-e PDU
SI (Opt)
Padding (Opt)
ContentsContents
Training.huawei.com
Chapter 2 MAC Layer of HSUPA
Chapter 1 Characteristics of HSUPA
Chapter 3 Physical Layer of HSUPA
Chapter 4 Scheduling Principles of HSUPA
Chapter 5 Power Control of HSUPA
Channel MappingChannel Mapping
We do not provide the mapping from DCCH to HS-DSCH/E-DCH for the time being.
New Channels in HSUPANew Channels in HSUPA
Uplink transport channel E-DCH: Bears high-speed uplink data.
Uplink physical channel E-DPDCH: Bears E-DCH PDUs. E-DPCCH: Bears the control information of E-DPDCH.
Downlink physical channel E-HICH: Bears the HARQ ACK/NACK indication message of E-
DCH. E-AGCH: Bears the Absolute Grant information determined by
the scheduler. E-RGCH : Bears the Relative Grant information determined by
the scheduler.
Physical Layer Information Exchange Process of HSUPAPhysical Layer Information
Exchange Process of HSUPA
① The UE sends an SI request carrying Buffer
state, UPH and other relevant information
via the E-DPDCH.
② The NodeB allocates resources via the E-
AGCH to the UE (absolute grant procedure)
or indicates power adjustment via E-RGCH
(relative grant procedure).
③ The UE sends MAC-e PDU (service or
signaling data) via the E-DPDCH, and sends
via the E-DPCCH the control information and
Happy bit (indicating the UE’s satisfaction
towards the rate currently allocated) that are
needed to demodulate the PDU.
④ The NodeB replies via the E-HICH to the
UE, telling the UE whether the PDU has
been successfully demodulated.
①
② ④③ ③
NodeB
E-D
PD
CH
E-D
PC
CH
E-A
GC
H/R
GC
H
E-H
ICH
Structure of E-DPDCH / E-DPCCHStructure of E-DPDCH / E-DPCCH
Header MAC-e PDU (payload) SI Padding
E-DPDCH (sub) frame structure
RSN E-TFCI Happy bit
E-DPCCH subframe structure
2bit 7bit 1bitHappy bit : The UE uses it to tell the NodeB whether the granted rate satisfies its equirements.
TTI
SF=256
E-DPDCH / E-DPCCH Frame FormatE-DPDCH / E-DPCCH Frame Format
E-DPDCH and E-DPCCH both keep frame alignment with the uplink DPCCH Modulation mode: BPSK with I/Q branch When the TTI of E-DCH is 10 ms, the contents of the E-DPCCH subframe will
be repeatedly sent five times
E-DPDCH / E-DPCCH Slot FormatE-DPDCH / E-DPCCH Slot Format
cChannel Bit
Rate (kbps)SF Bits/ Frame
Bits/ Subframe
Bits/SlotNdata
0 15 256 150 30 10
1 30 128 300 60 20
2 60 64 600 120 40
3 120 32 1200 240 80
4 240 16 2400 480 160
5 480 8 4800 960 320
6 960 4 9600 1920 640
7 1920 2 19200 3840 1280
Slot Format
#i
Channel Bit Rate (kbps)
SF Bits/ Frame Bits/ Subframe
Bits/SlotNdata
0 15 256 150 30 10
E-DPDCH slot format
E-DPCCH slot format
E-DPDCH I/Q Channel MappingE-DPDCH I/Q Channel Mapping
Ced,k : channelization code βed,k : gain factor for E-DPDCH Iqed,k : Determines the I/Q branch
mapping Iqed,k = 1, maps to I branch
Iqed,k = j, maps to Q branch
Nmax-dpdch
HS-DSCH configured
E-DPDCHk iqed,k
0 No/Yes
E-DPDCH1 1
E-DPDCH2 j
E-DPDCH3 1
E-DPDCH4 j
1 NoE-DPDCH1 j
E-DPDCH2 1
1 YesE-DPDCH1 1
E-DPDCH2 j
Code Resource Allocation Code Resource Allocation
E-DPCCH uses the channel code: Cec = Cch,256,1
E-DPDCHk uses the channel code: Ced,k, which is determined by
Nmax-dpdch and the spreading factor. See the following table
for the specific rules.
Nmax-dpdch E-DPDCHk Channelization code Ced,k
0
E-DPDCH1Cch,SF,SF/4 if SF 4Cch,2,1 if SF = 2
E-DPDCH2Cch,4,1 if SF = 4Cch,2,1 if SF = 2
E-DPDCH3E-DPDCH4
Cch,4,1
1
E-DPDCH1 Cch,SF,SF/2
E-DPDCH2Cch,4,2 if SF = 4Cch,2,1 if SF = 2
Grant MechanismGrant Mechanism
Absolute Grant Borne by the E-AGCH of the E-DCH serving cell
Grant mode: An index (totally 31 index values) used to indicate
the Traffic-to-Pilot ratio (E-DPDCH/DPCCH)
Significance of the grant value: The maximum power ratio
available for the UE (E-DPDCH/DPCCH)
Relative Grant RG carries a command instructing the UE to
increase/hold/decrease its current transmit power
The Serving RG is sent by all the cells in the E-DCH serving RLs
The Non-serving RG is sent by the E-RGCH in the non E-DCH
serving RLs
Downlink ChannelDownlink Channel
E-AGCH Bears the maximum allowed E-
DPDCH/DPCCH ratio
Bears HARQ control information
E-RGCH Bears a simple command to
instruct the UE to increase,
decrease or hold its transmit
power currently granted
E-HICH Tells the UE that the previous
data has been successfully
transmitted (Ack) or failed
(Nack)
Up / Hold / Down
T/P Grant HARQ Control
E-AGCH (sub) frame structure
E-HICH(sub) frame structure
TTI
Ack / Nack
E-RGCH(sub) frame structure
SF=256
SF=128
E-AGCH Frame FormatE-AGCH Frame Format E-AGCH is a downlink common channel
Fixed rate: 30 kbps Adjustment mode: QPSK SF=256
The E-AGCH bears the E-DCH absolute grant information of all the UEs in the cell
TTI may be 2 ms or 10 ms depending on the E-DCH. If the TTI of the E-DCH is 10 ms, then the E-AGCH either sends the same content in the five subframes or sends the content in one of the subframes
The UE only listens to the E-AGCH of the E-DCH serving cell
Slot #1 Slot #14 Slot #2 Slot #i Slot #0
Tslot = 2560 chips
1 subframe = 2 ms
1 radio frame, Tf = 10 ms
E-AGCH 20 bits
Mapping of Absolute Grant ValuesMapping of Absolute Grant Values
See the following table for the actual grant values (T/P):
Absolute Grant Value Index Absolute Grant
Value Index Absolute Grant Value Index
(168/15)2x6 31 (119/15)2 20 (34/15)2 9
(150/15)2x6 30 (106/15)2 19 (30/15)2 8
(168/15)2x4 29 (95/15)2 18 (27/15)2 7
(150/15)2x4 28 (84/15)2 17 (24/15)2 6
(134/15)2x4 27 (75/15)2 16 (19/15)2 5
(119/15)2x4 26 (67/15)2 15 (15/15)2 4
(150/15)2x2 25 (60/15)2 14 (11/15)2 3
(95/15)2x4 24 (53/15)2 13 (7/15)2 2
(168/15)2 23 (47/15)2 12 ZERO_GRANT* 1
(150/15)2 22 (42/15)2 11 INACTIVE* 0
(134/15)2 21 (38/15)2 10
* Please refer to 3GPP TS 25.321 for details of this value.
E-AGCH Frame TimingE-AGCH Frame Timing
2 slots offset after the P-CCPCH
P-CCPCH
38400 chips
Subframe 0 Subframe 1 Subframe 2 Subframe 3E-AGCH
Subframe 4
5120 chips
E-AGCH (10 ms)E-DCH TTI = 10 ms
E-DCH TTI = 2 ms
E-RGCH Frame Format E-RGCH Frame Format
Dedicated downlink physical channel for transmitting RG (+1, 0, -1 or 0,-1) to the UE
Same as the frame format of the E-HICH; use the same channelization code
SF=128 Modulation mode: QPSK All the cells in the E-DCH active set send E-RGCH frames
Mapping of E-RGCH Relative Grant ValuesMapping of E-RGCH Relative Grant Values
Command RG Value (Serving E-DCH radio link set)
RG Value (Non-serving E-DCH radio link set)
UP +1 not allowed
HOLD 0 0
DOWN -1 -1
The primary serving cell sends +1,0,-1 and a non-primary
serving cell only sends 0,-1
SG TableSG Table SGcur is the scheduled power state of the previous frame SGreq is the power needed for the TTI requested rate When Sgreq - SGcur > AGThreshold, the E-AGCH is used to adjust
the power. Otherwise the E-RGCH is used to adjust the power
IndexScheduled
GrantIndex
Scheduled Grant
IndexScheduled
Grant
37 (168/15)2*6 24 (95/15)2 11 (21/15)2
36 (150/15)2*6 23 (84/15)2 10 (19/15)2
35 (168/15)2*4 22 (75/15)2 9 (17/15)2
34 (150/15)2*4 21 (67/15)2 8 (15/15)2
33 (134/15)2*4 20 (60/15)2 7 (13/15)2
32 (119/15)2*4 19 (53/15)2 6 (12/15)2
31 (150/15)2*2 18 (47/15)2 5 (11/15)2
30 (95/15)2*4 17 (42/15)2 4 (9/15)2
29 (168/15)2 16 (38/15)2 3 (8/15)2
28 (150/15)2 15 (34/15)2 2 (7/15)2
27 (134/15)2 14 (30/15)2 1 (6/15)2
26 (119/15)2 13 (27/15)2 0 (5/15) 2
25 (106/15)2 12 (24/15)2
Typical Interaction Process Between UE and NodeB
Typical Interaction Process Between UE and NodeB
The UE sends the SI
(UE buffer state and available power) and Happy
bit
NodeB gets the requested rate from SI
NodeB finds the Sgreq according to the requested rate and compares it
with SGcur
Larger than AGThreshold
Smaller than or equal to AGThreshold
Use AG to grant Use RG to grant
Adjust the power according to AG or RG and indicate Happy or Unhappy
NodeB
UU
UE
E-RGCH/P-CCPCH/DPCH Timing Relations E-RGCH/P-CCPCH/DPCH Timing Relations Every timeslot bears an RG command If the cell does not belong to the E-DCH serving RLs
The RG information is sent in 15 consecutive slots (10 ms)
If the cell belongs to the E-DCH serving RLs 10 ms TTI: The RG information is sent in 12 consecutive slots (8 ms) 2 ms TTI: The RG information is sent in 3 consecutive slots (2 ms)
P-CCPCH
tE-RGCH,n
38400 chips
E-DCH TTI = 10 ms (cell in serving RLS) E-RGCH (8 ms)
Subframe 0 Subframe 1 Subframe 2 Subframe 3E-RGCH
Subframe 4E-DCH TTI = 2 ms (cell in serving RLS)
5120 chips
E-RGCH (10 ms)Cell in non serving RLS
E-RGCH Timing RelationsE-RGCH Timing Relations
When the cell sending the E-RGCH belongs to the serving E-
DCH RLs, the E-RGCH frame offset shall conform to the
following conditions: If E-DCH TTI is 10 ms, the frame offset of E-RGCH to P-CCPCH shall
satisfy this formula:
If E-DCH TTI is 2 ms, the frame offset of E-RGCH to P-CCPCH shall satisfy
this formula:
When the cell sending the E-RGCH does not belong to the
serving E-DCH RLs: The frame offset of E-RGCH to P-CCPCH is 5120 chips
30
7025676805120 ,
,nDPCH
nRGCHE
tt
30
5025676805120 ,
,nDPCH
nRGCHE
tt
E-HICH Frame FormatE-HICH Frame Format
Dedicated downlink physical channel for sending
HARQ Ack/Nack to the UE: Same as the frame format of E-RGCH; use the same
channelization code
SF=128
Modulation mode: QPSK
All cells in the E-DCH active set send E-HICH frames
Ack/Nack indication Ack=>+1
Nack from the serving RLs=>-1
Nack from non-serving RLs=>0 (DTX)
The UE can receive E-HICH from at most four cells
E-HICH Timing RelationsE-HICH Timing Relations
When E-DCH TTI is 10 ms, the frame offset of E-HICH to P-
CCPCH is chips
When E-DCH TTI is 2 ms, the frame offset of E-HICH to P-
CCPCH is chips
nHICHE ,t
nHICHE ,t
30
7025676805120 ,
,nDPCH
nHICHE
tt
30
5025676805120 ,
,nDPCH
nHICHE
tt
P-CCPCH
tE-HICH,n
38400 chips
E-DCH TTI = 10 ms E-HICH (8 ms)
Subframe 0 Subframe 1 Subframe 2 Subframe 3E-HICH
Subframe 4E-DCH TTI = 2 ms
How to Reach the Peak Value 5.76 MbpsHow to Reach the Peak Value 5.76 Mbps
Preconditions:
No retransmission
Uplink resources are available
Coding efficiency = 1
Multi-code transmission: 2*SF4+2*SF2
2 ms TTI
E-DPDCH Frame (SF=4 )E-DPDCH Frame (SF=4 )
SF=4,TTI=2ms,coding rate=1: The maximum payload of
each subframe is 1920 bits, i.e. 960 kbps.
1920 bits payload
1920 bits parity 1920 bits parity1920 bits system
1920 bits symbols
1920 bits symbols
7680 chips
1/3 coding
Puncture
BPSK modulation
Spreading (SF=4)
2ms
7680 chips/2 ms = 3.84 Mcps
E-DPDCH Frame (SF=2)E-DPDCH Frame (SF=2)
SF=2,TTI=2ms,coding rate=1: The maximum payload of
each subframe is 3840 bits, i.e. 1920 kbps.
3840 bits payload
3840 bits parity 3840 bits parity3840 bits system
3840 bits symbols
3840 bits symbols
7680 chips
1/3 coding
Puncture
BPSK modulation
Spreading (SF=2)
2ms
7680chips/2ms=3.84Mcps
Multi-Code Transmission Multi-Code Transmission SI SI+data Retransmission
1234
E-DPDCH
E-DPCCHE-AGCHE-RGCH
E-HICH
1.
2.
3.
4.
Grant
Ack/Nack
Control Info
10ms
14~16ms
8ms
30ms
…… 1 2 3 4 5 6
ContentsContents
Training.huawei.com
Chapter 2 MAC Layer of HSUPA
Chapter 1 Characteristics of HSUPA
Chapter 3 Physical Layer of HSUPA
Chapter 4 Scheduling Principles of HSUPA
Chapter 5 Power Control of HSUPA
Rise-over-Thermal NoiseRise-over-Thermal Noise
Rise-over-Thermal (RoT) reflects the
measurement value of the uplink load.
In order to correctly demodulate the data
received by the NodeB, the Signal-to-
Interference-Noise Ratio (SINR) must be
the minimum.
The increase of the user number and
transmit power causes uplink interference
to raise
The NodeB senses the noise raise and
SINR is influenced
The NodeB controls the total uplink
interference by adjusting the Grant to
every UE
The UE selects to send data according to
the Grant, the volume of data to be sent
and the available transmit power.
NodeB Scheduling NodeB Scheduling
UE1 UE2 UE3
Quickly allocate resources among multiple UEs in the unit of TTI and notify the UEs via Grant.
Try the best to satisfy all online users on the precondition of preventing overload, maximizing resource utilization and maximizing the cell throughput.
The scheduler of HSUPA needs to consider these factors: Channel condition, the volume of data to be sent in the UE buffer and the available transmit power of the UE.
Implementation of SchedulingImplementation of Scheduling
The UE sending a resource request The UE reports the Scheduling Information (SI).
The UE reports the Happy bit.
Controlling the UE transmit power The NodeB grants a Traffic-to-Pilot ratio to the UE,
which determines the available transmit rate of the UE.
The mode in which the NodeB grants a T/P value to
the UE is called “Scheduled transmission”.
Satisfying delay-sensitive services Use the non-grant mode for delay-sensitive services,
that is, the RNC directly allocates a certain amount of
resource to the UE, and the UE may use this resource
at any time without waiting for the scheduling result.
See the physical channel part for the scheduling
process
HARQ MechanismHARQ Mechanism
Multi-channel (process) Stop And Wait (SAW) protocol; 4
(TTI: 10 ms) or 8 (TTI: 2ms) processes
Synchronous retransmission without the process number
Every Radio Link (RL) will give a separate feedback.
Every RL has one E-HICH established.
The E-HICH information sent by every Radio Links set (RLs) is
the same and can be combined.
Transmission succeeds once any E-HICH returns ACK.
ContentsContents
Training.huawei.com
Chapter 2 MAC Layer of HSUPA
Chapter 1 Characteristics of HSUPA
Chapter 3 Physical Layer of HSUPA
Chapter 4 Scheduling Principles of HSUPA
Chapter 5 Power Control of HSUPA
E-DPCCH Physical Channel Power Control E-DPCCH Physical Channel Power Control
E-DPCCH power is based on the condition that the uplink
DPCCH has an offset
βec is the gain factor of E-DPCCH
△E-DPCCH is designated by the higher layer (user parameter
setting)
2010DPCCHE
cec
2010DPCCHE
Signalling Values for D E-DPCCH
Quantized Amplitude Ratios
for
8 30/15
7 24/15
6 19/15
5 15/15
4 12/15
3 9/15
2 8/15
1 6/15
0 5/15
E-DPDCH Physical Channel Power Control E-DPDCH Physical Channel Power Control
E-DPDCH Physical Channel Power Control E-DPDCH Physical Channel Power Control
Gain Factor of E-DPDCHGain Factor of E-DPDCH
E-DPCCH power is based on the condition that the uplink DPCCH has an offset
βed is the gain factor of E-DPDCH
βed,ref is the gain factor of the reference E-TFC
βed is obtained through calculating βed,ref
△E-DPDCH and harq are designated by the higher layer (user parameter △setting)
20, ,, , ,
, ,
10harq
e ref e jed j harq ed ref
e j e ref
L K
L K
20, 10
DPDCHE
crefed
βed,j,harq: Gain factor of the current E-TFC
Le,ref: Gain factor of the reference E-TFC
Le,j: Number of E-DPDCHs of the current E-TFC
Ke,ref : Number of transport block bits of the reference E-TFC
Ke,j: Number of transport block bits of the current E-TFC
Reference E-TFCReference E-TFC
How to determine the reference E-TFC of a
frame? The reference E-TFCs is the system-specified
reference E-TFC set Suppose the reference E-TFCs are 1, 2, …m-1, m
(m is the maximum reference E-TFC), then the E-
TFCs between m-1 and m shall all select m-1 as
the reference E-TFC The E-TFCs larger than m shall all select m as the
reference E-TFC The E-TFCs smaller than 1 shall all select 1 as
the reference E-TFC
E-TFCReference
E-TFC
E-TFC 10 E-TFC 9
E-TFC 9 E-TFC 9
E-TFC 8 E-TFC 5
E-TFC 7 E-TFC 5
E-TFC 6 E-TFC 5
E-TFC 5 E-TFC 5
E-TFC 4 E-TFC 2
E-TFC 3 E-TFC 2
E-TFC 2 E-TFC 2
E-TFC 1 E-TFC 2
An example is shown in the figure on the right, where E-TFCs 2/5/9 are the specified reference E-TFCs.
E-AGCH/E-RGCH/E-HICH Power ControlE-AGCH/E-RGCH/E-HICH Power Control
Two power control modes
Static power allocation
P = Pcpich + PowerOffset
Dynamic power allocation (based on the downlink DPCH)
- Every kind of channel can have a different PO. The
specific implementation varies and is not defined in the
protocol.
Appendix 1: Active Set of HSUPAAppendix 1: Active Set of HSUPA
DPCH Active Set
E-DCH Active Set
Serving RLs
E-DCH serving cell
serving RL
serving RL
Non-serving RL
Non-serving RL
Other AS Cell
Other AS Cell
Send E-AGCH
The UE can merge the E-RGCH commands sent by the cells in the RLs
Send non-serving E-RGCH
All the cells that belong to the UE active set and can process E-DCH
Appendix 2: E-DPDCH FRCAppendix 2: E-DPDCH FRC
FRC – Fixed Reference Channel Totally 7 kinds of FRC: 1 - 7, which are several test reference channels
of E-DPDCH
Fixed Ref Channel
TTI [ms] NINF SF1 SF2 SF3 SF4 NBINCoding
RateMax inf Bit Rate [kbps]
FRC1 2 2706 4 4 0 0 3840 0.705 1353.0
FRC2 2 5412 2 2 0 0 7680 0.705 2706.0
FRC3 2 8100 2 2 4 4 11520 0.703 4050.0
FRC4 10 5076 4 0 0 0 9600 0.529 507.6
FRC5 10 9780 4 4 0 0 19200 0.509 978.0
FRC6 10 19278 2 2 0 0 38400 0.502 1927.8
FRC7 10 690 16 0 0 0 2400 0.288 69.0