12 Cdmabss 1xev Do Principle
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Transcript of 12 Cdmabss 1xev Do Principle
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Huawei Confidential. All Rights Reserved
Issue 1.0
ORA000403 CDMA2000 1xEV-DO Principles
Internal Use
Course ContentsCourse Contents
Chapter 1 Introduction
Chapter 2 Abstract of Air interface
Chapter 3 Important Number
Chapter 4 Hardware Solution
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Internal Use
IS95A9.6kbps
CDMA2000 1X307.2kbps
Heavier voiceservice capacity
Longer periodof standby time
CDMA20003X
CDMA20001X EV
1X EV-DO1995
IS95B115.2kbps
1998
20002003
Development of CDMADevelopment of CDMA
Higher spectrum efficiency and network capacity
Higher packet data rate and more diversified services
CDMA20001X EV
1X EV-DV
2005
Internal Use
CDMA 1X EVCDMA 1X EV--DO NetworkingDO Networking
INTERNET
MIP HA
AAA
PDSN/FAAN/PCF
AN/PCF
Abis
SDH
BTS
BTS
BTS
BTS3601
BTS
BTS
Um
A13
A10/A11
PS
Abis
Um
A10/A11
Softsite
AT
AT
AN-AAA
A12
A12
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Internal Use
1xEVAir link
RLP
PPP
IP
TCP/UDP
Application
User
DevicePDSNBTS
BSC
Function
IP
RouterServer
IP IP
System Protocol StackSystem Protocol StackSystem Protocol Stack
Internal Use
Network StructureNetwork Structure
AT: Access TerminalHRPD terminal (MS).
AP: Access Point (BTS).
AN: Access Network and 1xEV-DO access network, providing data connection between the terminal and
the PDSN.
AN AAA: providing user authentication (HLR).
AT
Air Interface
A13A12 AN AAA
AAA
AP BSC
BSC
PCF PDSNAbis A8/A9 A10/A11
AN
AN
APAbis
Adopt Packet Switched (PS) domain as the Core Network (CN) structure,
independently of the Circuit Switched (CS) CN.
Adopt AN-AAA to support access authentication instead of HLR.
1xEV-DO handoff: 1xEV-DO does not support forward soft handoff but
adopts virtual soft handoff. The inter-system soft handoff is controlled by
terminals.
1xEV-DO and 1x adopt frequency points with a certain amount of isolation
during network establishment.
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Internal Use
A12 Interface
Refer to the interface between AN and AN-AAA, supporting the
following functions:
Implementing AN-level access authentication for the AT
Returning MN ID to authenticated terminals and supporting link
establishment of A8/A9 and A10/A11 interfaces
A13 Interface
Refer to the interface between AN and AN, supporting signaling
interchange during inter-AN handoff and exchange of AT and PDSN
messages between the source AN and the target AN.
Information from the target AN to the source AN includes: user UATI,
security layer packet and Sector ID
Information from the source AN to the target AN includes : MN ID,
configuration parameter at session layer, PDSN address and PANID
New InterfaceNew Interface
Internal Use
Performance ComparisonPerformance Comparison
Forward link : closed loop power control and fastforward power control
Reverse link : open and closed loop power control
Forward link: transmit with maximum power andthere is no power control.
Reverse link: open and closed loop power controlPower control
307.2kbps2.4576MbpsPeak forward rate
1.2288Mcps/1.25MHz1.2288Mcps/1.25MHzChip rate/carrier
Convolutional coding and Turbo codingTurbo codingEncoding code
Forward QPSK and reverse HPSKForward QPSK8-PSK and
16-QAM; reverse BPSKModulation mode
5ms20ms40ms and 80ms26.667msFrame length
Both forward and reverse links: soft handoff, softerhandoff and hard handoff
Forward link : virtual (softer) soft handoffReverse link : soft handoff, softer handoff and hard
handoffHandoff
Support both voice service and packet data serviceSupport packet data serviceService characteristics
Forward and reverse CDMAForward time division + code division; reverse code
divisionMultiple access mode
CDMA2000 1xCDMA2000 1x EV-DO
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Internal Use
Course ContentsCourse Contents
Chapter 1 Introduction
Chapter 2 Abstract of Air interface
Chapter 3 Important Number
Chapter 4 Hardware Solution
Internal Use
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
2.1 Overview2.1 Overview
2.2 Forward link
2.3 Reverse link
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Internal Use
Explanation:
CDMA 1X EV DO Application Layer - Airlink packet andsignaling applications.
Stream Layer - Multiplexing of applications with differentQoS.
Session Layer - Protocol negotiation, Configuration,Session state maintenance.
Connection Layer - Airlink connection establishment andmaintenance.
Security Layer - Authentication and encryption services.
MAC Layer - Procedures for receive and transmit over thephysical layer.
Physical Layer - Channel structure, freq., power,modulation and encoding.
CDMA 1X EV DO Protocol StackCDMA 1X EV DO Protocol StackCDMA 1X EV DO Protocol Stack
Stream Layer
Application Layer
Connection Layer
Session Layer
Security Layer
MAC Layer
Physical Layer
Internal Use
Forward
CDMA 1XEV-DO RTT
ReverseReverse
PilotMediumAccessControl
Traffic Control Traffic Access
ReverseRate
Indicator
DataRate
Control
Reverse
Activity
DRC
Lock Pilot DataPilot
Medium
AccessControl Data ACK
EVDO Air InterfaceEVDO Air InterfaceEVDO Air Interface
Reverse
PowerControl
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Internal Use
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
2.1 Overview
2.2 Forward link2.2 Forward link
2.3 Reverse link
Internal Use
TDM of Forward ChannelTDM of Forward Channel
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Half slot (1024 chips) Half slot (1024 chips)
Slot (1.667 ms length)
Frame(26.67 mslength)
MAC64chips
MAC64chips
Pilot96chips
MAC64chips
MAC64chips
Pilot96chips
Null Null Null Null
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Active Slot
Idle Slot
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Internal Use
A single user is served at any instant:
No power sharing, entire sector power allocated to one user
Data rate is dynamically adapted as a function of user SINR
Uses Rate control v/s Power Control to achieve high spectralefficiency
Access Point (BTS) always transmits at full power:
Very high peak rates for users that are in a good coveragearea
Data throughput maximized by efficient use of sector power
Time-Division MultiplexingTimeTime--Division MultiplexingDivision Multiplexing
Internal Use
Values per Physical Layer Packet Approximate Coding
Data
Rate
(kbps)
Max
Number
of Slots
Physical
layer
packet
size
(bits)
Modulation
Symbol Unit
Size (bits)
Total
Modulation
Symbols
Number of
Full
Sequence
Trans-
missions
Number of
Modulation
Symbols in
Last Partial
Trans-
mission
Actually
Code
Rate
Repetition
Factor
38.4 16 1,024 2,560 24,576 9 1,536 1/5 9.6
76.8 8 1,024 2,560 12,288 4 2,048 1/5 4.8
153.6 4 1,024 2,560 6,144 2 1,024 1/5 2.4
307.2 2 1,024 2,560 3,072 1 512 1/5 1.2
614.4 1 1,024 1,536 1,536 1 0 1/3 1
307.2 4 2,048 3,072 6,272 2 128 1/3 2.04
614.4 2 2,048 3,072 3,136 1 64 1/3 1.02
1,228.8 1 2,048 3,072 1,536 0 1,536 2/3 1
921.6 2 3,072 3,072 3,136 1 64 1/3 1.02
1,843.2 1 3,072 3,072 1,536 0 1,536 2/3 1
1,228.8 2 4,096 3,072 3,136 1 64 1/3 1.02
2,457.6 1 4,096 3,072 1,536 0 1,536 2/3 1
Traffic Channel Data RateTraffic Channel Data RateTraffic Channel Data Rate
Similar to CDMA 1X RC, EV-DO defines several rate set as shown following table.
Forward data rate is requested by AT. AT sends requirement via DRC channel.
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Internal Use
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
2.1 Overview
2.2 Forward link
2.3 Reverse link2.3 Reverse link
Internal Use
Reverse Physical ChannelsReverse Physical Channels
DRC
ACK
Traffic
Pilot
Access DataPilot
Pilot
Access Data
16
0w
16
8w
8
4w
4
2w
16 Slots = 26.67 ms
1.67 ms
1.67 ms
16 Slots = 26.67 ms
1/2 Slot
16 Slots = 26.67 ms
1.67 ms
RRI
Pilot
RRI
PilotPilot
RRI
PilotRRI
1 Slot = 2048 Chips256 chips for RRI 1792 chips for Pilot
1 frame 16 Slots = 26.67 ms
1.67 ms
1.67 ms
AccessProbe
16
0w
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Internal Use
Reverse LinkReverse LinkReverse Link
Pilot-Aided, coherently demodulated reverse link
Traditional IS-95 power control mechanisms
Traditional IS-95 soft handoffs
1xEV reverse link user data rate options:
9.6, 19.2, 38.4, 76.8, 153.6 kbps
Maximum allowed transmit data rate isdynamically adapted based on Sector Loadinginformation transmitted by AP (the RAB bit)
Internal Use
Course ContentsCourse Contents
Chapter 1 Introduction
Chapter 2 Abstract of Air interface
Chapter 3 Important Number
Chapter 4 Hardware Solution
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Internal Use
MIN/IMSIMIN/IMSI
Mobile subscriber identity/international mobile subscriber identityFor example, 0907550001/460030907550001
Not more than 15 digits
3 digits 2 digits
IMSI
MCC MNC MSIN
NMSI
Internal Use
ESNESN
A unique Electronic Serial Number (ESN) is used to identify single
MS. An ESN includes 32 bits and has the following structure:
31......24 23......18 17......0 bit
Manufacturers number retained equipment SN
For example, FD 03 78 0A (the 10th Motorola 378 mobile phone)
The equipment serial number is allocated by a manufacturer.
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Internal Use
SID/NID/PZIDSID/NID/PZID
System Identity (SID) +Network Identity (NID) + Packet
Zone Identity (PZID)
SID includes 15 bits. NID is made up of 16 bits. PZID
includes 8 bits. SID, NID and PZID determine one PCF
area. If AT find one of this code has been changed, it
will take route update process.
Internal Use
Unicast Access Terminal Identifier (UATI)Unicast Access Terminal Identifier (UATI)
192 168 1 23
32 bit 32 bit 32 bit 32 bit
UATI 128
24 bit104 bit
UATI 104 (Subnet) UATI 24
Color Code
8 bit
UATI 32
32Random ATI (RATI)
'11'
32Unicast ATI10
32Multicast ATI (MATI)01
0Broadcast ATI (BATI)'00'
ATI
Length(bits)
ATIType DescriptionATIType
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Internal Use
Course ContentsCourse Contents
Chapter 1 Introduction
Chapter 2 Abstract of Air interface
Chapter 3 Important Number
Chapter 4 Hardware Solution
Internal Use
Adopt 25G integrated servicebackbone switch (ATM/IP).
Realize centralized control anddisperse processing.
Adopt modular structure and supportsmooth capacity expansion.
Be compatible with IS95 and supportsmooth evolution to 1XEV. Realize
connection of IS95 BTS and 1X BTSsimultaneously in the system.
Be separable and support built-inPCF.
Provide external standard interfaces
Support inter-BSC soft handoff.
Adopt 25G integrated servicebackbone switch (ATM/IP).
Realize centralized control anddisperse processing.
Adopt modular structure and supportsmooth capacity expansion.
Be compatible with IS95 and supportsmooth evolution to 1XEV. Realizeconnection of IS95 BTS and 1X BTSsimultaneously in the system.
Be separable and support built-inPCF.
Provide external standard interfaces
Support inter-BSC soft handoff.
Terms:CSWS: Central Switching Subrack
CRPS: CDMA Resource and PacketSubrack
CIMS: CDMA Integrated Management
Subrack
CIPS: CDMA Integrated Processing
Subrack
CPMS: CDMA Packet Module Subrack
IBSHO: Inter-BSC Soft Handoff
1X CBTS
...
DO/1X BTS
CMSC M2000
PDSN
CIPS CPMS
CIMS
CSWS
GPS/GLONASS
DO-CIPS 1X-CIPS DO-CIPS 1X-CIPS
CDMA 1X
1xEV-DO
IS95
CDMA 1X
ABIS
A3/A7/A13
A1/A2
A8/A9
A10/A11
ABIS
AN AAA
AAA
A12
CRPS
DO CBTS
1x EV-DO
V200 BSC ArchitectureLarge CapacityV200 BSC ArchitectureV200 BSC ArchitectureLarge CapacityLarge Capacity
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Internal Use
Special Frames ofSpecial Frames of V200R001 BSCV200R001 BSC
Specifications for single DO-
CIPS frame:
DO sector carriers supported:
192
Abis interface E1 ports: 64
Maximum BTSs connected: 64
1514131211109876543210
CB
IE
CF
MR
CS
PU
CS
PU
CF
MR
CF
MR
CF
MR
CM
UX
CM
UX
CF
MR
CF
MR
CF
MR
CF
MR
CF
MR
CF
MR
CB
IE
1514131211109876543210
C
P
CU
C
P
CU
C
P
PU
C
P
PU
C
P
PU
C
P
PU
C
P
PU
C
M
UX
C
M
UX
C
B
PU
C
B
PU
C
B
PU
C
B
PU
C
B
PU
C
H
AC
C
H
AC
DO-CIPS frame
DO-CPMS frame
Specifications for single
PM frame (a maximum of
four frames) :
Connected PPPs of packet
data service:60000Adjustable connected PPPs
of packet data service : 2500
Total packet data traffic:
100Mbps
Internal Use
Typical Configuration ofTypical Configuration of V200R001 BSCV200R001 BSC
CIPS (1x)16
CIMS1
CPMS4
CRPS1
CIPS (1x EV DO)4
CSWS1
CLKM1
9320,000 Subs (0.03Erl/sub) & 400
Mbps Throughput
SubracksCabinetsCapacity
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Internal Use
Solution to WholeSolution to Whole--Network Coverage: Existing 1xNetwork Coverage: Existing 1x
NetworkNetwork
1x network
PSTN
ISDN
PLMN
GMSC/SSP
MSC/VLR/SSP
INTERNET
HLR/AC/EIR
MIP HA
AAA
PDSN/FA
BSC1/PCF/IWF
A1/A2
A1/A2
OMC
PS domain
CS domain
Abis
Um
A10/A11
1x-BTS
Abis
1x-BTS
Internal Use
11xEVxEV--DO Solution 1: Upgrading to DO NetworkDO Solution 1: Upgrading to DO Network
AN AAA: adding NEs to DO
DO-Pico: adding NEs to hot spot and indoor coverage
BTS: adding DO channel boards and transceivers, andupgrading software
BSC: adding DO processor frames
PCF: adding DO processor frames
1x and lxEV-DO networks
PSTN
ISDN
PLMN
GMSC/SSP
MSC/VLR/SSP
INTERNET
HLR/AC/EIR
MIP HA
AAA
PDSN/FA
BSC1/PCF/IWF
1x/DO-BTS
A1/A2
A1/A2
OMC
PS domain
CS domain
Abis
Um
A10/A11
AN AAA
A12
DO-Pico
Abis
1x-BTS
Abis
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Internal Use
11xEVxEV--DO Solution 2: Establishing DO NetworkDO Solution 2: Establishing DO Network
AN AAA: adding NEs to DO
BSC2/PCF and DO-BTS : adding NEs to DO
1x and lxEV-DO networks
PSTN
ISDN
PLMN
GMSC/SSP
MSC/VLR/SSP
INTERNET
HLR/AC/EIR
MIP HA
AAA
PDSN/FABSC2/PCF/IWF
BSC1/PCF/IWF
Abis
DO-BTS
A3/A7/A13
A10/A11
A1/A2
A1/A2
OMC
PS domain
CS domain
Um
A10/A11A12
AN AAA
1x BTS
Abis
1x-BTS
Abis
Internal Use