Upload
didamb
View
229
Download
0
Embed Size (px)
Citation preview
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
1/44
HUAWEI TECHNOLOGIES CO., LTD.
All rights reserved
www.huawei.com
Internal
ORA000403 CDMA2000
1xEV-DO principle
ISSUE 1.0
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
2/44
HUAWEI TECHNOLOGIES CO., LTD. Page 2All rights reserved
Chapter 1 IntroductionChap
ter 1 Introduction
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
Chapter 3 New TechnologyChapter 3 New Technology
Chapter 4 Important NumberChapter 4 Important Number
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
3/44
HUAWEI TECHNOLOGIES CO., LTD. Page 3All rights reserved
IS95A
9.6kbps
CDMA2000 1X
307.2kbps
Heavier voice
service
capacityLonger period
of standby time
CDMA2000
3X
CDMA2000
1X EV
1X EV-DO1995
IS95B
115.2kbps
1998
20002003
Development of CDMA
Higher spectrum efficiency and network capacity Higher packet data rate and more diversified services
CDMA2000
1X EV
1X EV-DV
2005
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
4/44
HUAWEI TECHNOLOGIES CO., LTD. Page 4All rights reserved
CDMA 1X EV-DO 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
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
5/44
HUAWEI TECHNOLOGIES CO., LTD. Page 5All rights reserved
1xEV
Air link
RLP
PPP
IP
TCP/UDP
Application
User
DevicePDSNBTS
BSC
Function
IP
RouterServer
IP IP
System Protocol Stack
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
6/44
HUAWEI TECHNOLOGIES CO., LTD. Page 6All rights reserved
Chapter 1 IntroductionChapter 1 Introduction
Chapter 2 Abstract of Air interfaceChap
ter 2 Abstract of Air interface
Chapter 3 New TechnologyChapter 3 New Technology
Chapter 4 Important NumberChapter 4 Important Number
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
7/44HUAWEI TECHNOLOGIES CO., LTD. Page 7All rights reserved
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
2.1 Overview2.1 Overview
2.2 Forward link2.2 Forward link
2.3 Reverse link2.3 Reverse link
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
8/44HUAWEI TECHNOLOGIES CO., LTD. Page 8All rights reserved
Explanation:
CDMA 1X EV DO Application Layer -Airlink packet and signaling applications.
Stream Layer - Multiplexing of applicationswith different QoS.
Session Layer - Protocol negotiation,Configuration, Session state maintenance.
Connection Layer - Airlink connectionestablishment and maintenance.
Security Layer - Authentication andencryption services.
MAC Layer - Procedures for receive and
transmit over the physical layer.Physical Layer - Channel structure, freq.,power, modulation and encoding.
Stream Layer
Application Layer
Connection Layer
Session Layer
Security Layer
MAC Layer
Physical Layer
CDMA 1X EV DO Protocol Stack
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
9/44
HUAWEI TECHNOLOGIES CO., LTD. Page 9All rights reserved
Forward
CDMA 1XEV-DO
ReverseReverse
Pilot
Medium
Access
Control
Traffic Control Traffic Access
Reverse
Rate
Indicator
Data
Rate
Control
Reverse
Activity
DRC
Lock
Pilot DataPilot
Medium
Access
Control
Data ACK
Reverse
Power
Control
Channels
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
10/44
HUAWEI TECHNOLOGIES CO., LTD. Page 10All rights reserved
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
2.1 Overview2.1 Overview
2.2 Forward link2.2 Forward link
2.3 Reverse link2.3 Reverse link
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
11/44
HUAWEI TECHNOLOGIES CO., LTD. Page 11All rights reserved
TDM of Forward Channel
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Half slot (1024 chips) Half slot (1024 chips)
Slot (5/3 ms length)
Frame(80/3 ms length)
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
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
12/44
HUAWEI TECHNOLOGIES CO., LTD. Page 12All rights reserved
Time-Division Multiplexing
A single user is served at any instant:
No power sharing, entire sector power allocated to one userData rate is dynamically adapted as a function of user SINR
Uses Rate control v/s Power Control to achieve high spectralefficiency
Access Point always transmits at full power:
Very high peak rates for users that are in a good coverage
areaData throughput maximized by efficient use of sector power
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
13/44
HUAWEI TECHNOLOGIES CO., LTD. Page 13All rights reserved
Forward Physical Channels
Pilot Channel
Control Channel
Traffic Channel
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
RA
DRC Lock
RPC
Pilot Pilot Pilot
Data Data Data
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data
400chips
MAC
64chips
MAC
64chips
Data
400chips
Pilot
96chips
Data
400chips
MAC
64chips
MAC
64chips
Data
400chips
Pilot
96chips
Bit stream
Data stream
All 0 Bit
MAC MAC MAC MAC
AP
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
14/44
HUAWEI TECHNOLOGIES CO., LTD. Page 14All rights reserved
Discontinuous Pilot Burst
Pilot Time Division Multiplexed with Traffic/Control and MAC
channels
Transmitted at pre-determined positions within a slot
Pilot power is more than other channels
Advantageous of burst pilot transmitted at constant AP power :
Aids very accurate Signal-to-Interference-and-Noise-ratio
(SINR) estimation
Pilot received only in presence of pilots from other sectors:
Unaffected by data transmissions
Pilot96chips
Pilot96chips
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
15/44
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
16/44
HUAWEI TECHNOLOGIES CO., LTD. Page 16All rights reserved
Data
Traffic Channel Data RateTraffic Channel Data Rate
Same as the CDMA 1X RC, EV-DO defines several rate set as shown following table.
Forward data rate is requested by AT. AT send requirement via DRC channel.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
17/44
HUAWEI TECHNOLOGIES CO., LTD. Page 17All rights reserved
Data Rates (kbps)
Modulation Type
Bits per
Encoder Packet
Code Rate
Encoder Packet
Duration (ms)
Max. # of Slots
38.4 76.8 153.6 307.2 307.2 614.4 614.4 921.6 1228.8 1228.8 1843.2 2457.6
QPSK QPSK QPSK QPSK QPSK QPSK QPSK 8 PSK QPSK 16QAM 8 PSK 16QAM
1024 1024 1024 1024 2048 1024 2048 3072 2048 4096 3072
4096
1/5 1/5 1/5 1/5 1/3 1/3 1/3 1/3 1/3 1/3 1/3 1/3
26.67 13.33 6 .67 3.33 6.67 1.67 3.33 3.33 1.67 3.33 1.67 1.67
16 8 4 2 4 1 2 2 1 2 1 1
Physical Layer Parameters
Modulation
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
18/44
HUAWEI TECHNOLOGIES CO., LTD. Page 18All rights reserved
Forward Link Coding
Turbo encoded packet is scrambled and block interleaved
Systematic code symbols followed by parity symbols
High SINR
Number of code symbols in first slot may be less than total codesymbols in the packet
Higher effective code rate is achieved by truncation of parity bits
coding gains due to incremental transmission of parity bits
Low SINRAll code symbols are transmitted followed by repetitions
coding gains by simple repetition of a basic 1/5 rate code.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
19/44
HUAWEI TECHNOLOGIES CO., LTD. Page 19All rights reserved
Link Adaptation Scheme
AT Requested Data Rate determines
modulation scheme (QPSK, 8-PSK, 16-QAM)
code rate
preamble length
Preamble aids AT in detecting start of a packet
maximum # of slots required for transmission
if the AP chooses to serve the AT then the AT knows exactly
what rate it would be served at
With multiple terminals, a scheduler determines the order in
which terminals are served.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
20/44
HUAWEI TECHNOLOGIES CO., LTD. Page 20All rights reserved
Physical Layer packet Size
In EV-DO RTT, protocol defines 4 typesPhysical Layer Packet. But how to
convert it to Modulation Symbol Unit?
See following slides.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
21/44
HUAWEI TECHNOLOGIES CO., LTD. Page 21All rights reserved
Physical
layer
packet
Channel
Coding
1/3 or 1/5
Scrambling Interleaving
Modulation
QPSK/8PSK/1
6QAM
Puncturing
(Optional step)
Modulation
Symbol Unit
Process
Physical layer packet Encoder rate Puncturing Ratio Modulation Symbol Unit Slot Number
1024 1/5 0% 2560 16/8/4/2
1024 1/3 0% 1536 1
2048 1/3 0% 3072 4/2
2048 1/3 50% 3072 1
4096 1/3 0% 3072 2
4096 1/3 50% 3072 1
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
22/44
HUAWEI TECHNOLOGIES CO., LTD. Page 22All rights reserved
Symbol Stream
DataX chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
PreambleX chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
Data400chips
MAC64chips
MAC64chips
Data400chips
Pilot96chips
DataX chips
MAC64chips
MAC64chips
Pilot96chips
First slot
Interval slot
Finally slot
After puncturing, Symbol stream will insert into one or more slots Data field. Beforetransmission, first slot will add a preamble head. Preamble is all 0 bit. It spread by 32 ary
walsh code. System used different walsh code to distinguish users data. See below figure.
Null
Symbol stream unit
Preamble Data MAC & Pilot Data Data MAC & Pilot Data Data
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
23/44
HUAWEI TECHNOLOGIES CO., LTD. Page 23All rights reserved
1/1 2/1 1/2 2/2 3/2 1/3 1/4 2/4 1/5 1/6
Actual slot
1/1 1/2 1/3 1/4 2/1 2/2 1/5 2/4 1/6 3/2
4 SLOT Interlace
Data Burst
User1 Burst User2 Burst User4 Burst
Forward Interlace Structure
Forward User Data Burst are distinguished by different colors
Long Data burst exceeding the 1 slot are interlaced 4-slots apartData streams on different interlace offsets are sent to one or more users.
A single user may receive a maximum of 4 data streams simultaneously
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
24/44
HUAWEI TECHNOLOGIES CO., LTD. Page 24All rights reserved
MAC Channels
RA
DRC Lock
RPC
RPC & RA
MAC channel include three sub- channel.
Reverse Power Control Channel and DRC Lock Sub-channel are time division multiplexed
at one certain Walsh code channel. This Walsh code is called MAC index. Two channelsis dedicate channel. They belong to one user.
Reverse Power Control Channel is same as IS95 system, but control speed is slower thanold one. It is about 600 times per second.
DRC Lock Sub-channel transmitted every 8 or 16 slots and repeat 4 or 8 times. If AP cantdemodulate one ATs reverse channel, the AP will set DRC Lock bit to 0.
RA Sub-channel is common channel. It indicate one sector reverse load.
RA
DRC Lock
RPC
DRC Lock & RA
Repetition Cycle 4 or 8 times Repetition Cycle 4 or 8 times
DRC period 8 or 16 slots
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
25/44
HUAWEI TECHNOLOGIES CO., LTD. Page 25All rights reserved
MAC Index
RA Sub-channel and DRC Lock Sub-channel/RPC Sub-
channel are code division multiplexed by different walsh code.
This walsh code is called MAC index. The assignment of MAC
Index is shown in below table.
MAC Index MAC Channel code Preamble Mapping
0 & 1 Not Used Not Used
2 Not Used 76.8 kbps Control Channel
3 Not Used 36.4 kbps Control Channel
4 RA Sub-channel Not Used
5 Not Used Broadcast
6-63 RPC & DRC Lock Sub-channel For corresponding traffic channel
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
26/44
HUAWEI TECHNOLOGIES CO., LTD. Page 26All rights reserved
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
2.1 Overview2.1 Overview
2.2 Forward link2.2 Forward link
2.3 Reverse link2.3 Reverse link
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
27/44
HUAWEI TECHNOLOGIES CO., LTD. Page 27All rights reserved
Reverse Physical Channels
DRC
ACK
Traffic
Pilot
Access Data
PilotPilot
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 Chips 256 chips
for RRI 1792 chips for Pilot
1 frame 16 Slots = 26.67 ms
1.67 ms
1.67 ms
Access
Probe
16
0w
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
28/44
HUAWEI TECHNOLOGIES CO., LTD. Page 28All rights reserved
Reverse 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 is dynamically
adapted based on Sector Loading information
transmitted by AP
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
29/44
HUAWEI TECHNOLOGIES CO., LTD. Page 29All rights reserved
Access Process
Synchronous CC capsule broadcast: Access Parameters msg: Access Cycle Duration, Power parameters andPersistence values
Default max. number of probe sequences = 3
Num. Probes per sequence = [1, 15]
Initial probe power determined by Open Loop power control
Power Step range 0, 0.5,, 7.5dB (3dB typical)
probe
probesequence
p
1 2 3 Np
1
persi
stence
s
p
1 2 3 Np
2
persi
stence
p
1 2 3 Np
Ns
persi
stence
Time
...
...
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
30/44
HUAWEI TECHNOLOGIES CO., LTD. Page 30All rights reserved
Data Rates (kbps)
Modulation Type
Bits per Encoder Packet
Code Rate
Encoder PacketDuration (ms)
Number of Slots
9.6 19.2 38.4 76.8 153.6
BPSK BPSK BPSK BPSK BPSK
256 512 1024 2048 4096
1/4 1/4 1/4 1/4 1/2
26.67 26.67 26.67 26.67 26.67
16 16 16 16 16
Physical Layer Parameters
Reverse Traffic Link Rate Set
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
31/44
HUAWEI TECHNOLOGIES CO., LTD. Page 31All rights reserved
Reverse Link Rate Control
Autonomous rate change by the AT based on Reverse Activity Bit
(RAB) broadcast by each sector in the ATs active set
Probabilistic Rate Determination at the AT
Logical OR operation of all RABs in its active set
If RAB=1 (busy), reduces to next lower rate with prob. q
If RAB=0 (not busy), increases to next higher rate with prob. p
Probabilities p, q depend on the current rate
Maintains current rate with prob. (1-p) or, (1-q) respectively
Not
Busy
9.6
kbps
19.2
kbps
153.6
kbps
P1
38.4
kbps
76.8
kbps
P2 P3 P4
Busy9.6
kbps
19.2
kbps
153.6
kbps
q1
38.4
kbps
76.8
kbps
q2 q3 q4
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
32/44
HUAWEI TECHNOLOGIES CO., LTD. Page 32All rights reserved
RRI, DRC and ACK Channel
Three Channel are dedicate control channel
RRI Sub-Channel and DRC Sub-Channel composed reverse MAC
Channel.
RRI Channel :AT indicates the reverse traffic data rate to AP.
DRC Channel :AT indicate requirement of forward data rate to the targetAP .
DRC Channel include two field :DRC value and DRC cover.DRC value indicate data rate. The requirement of data rate based on
the best serving sectors predicate SINR.
DRC cover indicate target AP (sector).
ACK Channel Acknowledges correctly received Forward link packets.
DRC Channel and ACK Channel realize H-ARQ functions.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
33/44
HUAWEI TECHNOLOGIES CO., LTD. Page 33All rights reserved
Chapter 1 IntroductionChapter 1 Introduction
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
Chapter 3 New TechnologyChapter 3 New Technology
Chapter 4 Important NumberChapter 4 Important Number
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
34/44
HUAWEI TECHNOLOGIES CO., LTD. Page 34All rights reserved
Hybrid-ARQ : Target
AT predicts forward link SINR and the achievable data rate To achieve the target packet error rate (PER) in certain mobile
channels, AT may request a conservative data rate (DRC).
Conservative DRC may result in large excess SINR of thereceived packet
a higher data rate packet could have been successfully
decoded. Turbo-encoded packets constructed such that successive slot
transmissions (of a given packet) add
Incremental Parity bits and/or
Repeated symbols
Decode possible with each successive transmission
Likelihood of decode increases as the number of slots increases
Early-decode achieves higher transmitted data rate andimproves spectral efficiency
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
35/44
HUAWEI TECHNOLOGIES CO., LTD. Page 35All rights reserved
Hybrid-ARQ : Realize
Forward link multi-slot packet transmissions interlaced in 4 slots Allows AT time to decode packets and send ACK/NAK indicationback to base station
Interlaced packets may be destined to one or multiple users
Reverse link ACK mechanism
As soon as the access terminal has decoded a physical layerpacket successfully, it sends an ACK bit to the serving sector
The serving sector then stops sending that physical layer packet
and moves on to the next physical layer packet
If ACK is not received, scheduler transmits the maximum slots for
that packet
Four independent ARQ streams can be used by a single or multiple
terminals
No peak throughput loss for a given Access Terminal
Requires more memory at the Access Terminal
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
36/44
HUAWEI TECHNOLOGIES CO., LTD. Page 36All rights reserved
n n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+9 n+10
n+11n+12
n+13n+14 n+15
DRC value requests
153.6 kbps
One half
slot
offset
1st Slot 2nd
Slot 3thSlot 4thSlot
3 Slots delayNAK NAK NAK ACK
R-DRC
Channel
F-Traffic
Channel
R-ACK
Channel
Decode Failed Decode Failed Decode Failed
Decode
Successful
Multi-slot packet with Normal termination
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
37/44
HUAWEI TECHNOLOGIES CO., LTD. Page 37All rights reserved
n n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+9 n+10
n+11n+12
n+13n+14 n+15
DRC value requests
153.6 kbps
One half
slot
offset
1st Slot 2nd
Slot 3thSlot 1st Slot
3 Slots delay NAK NAK ACK
R-DRC
Channel
F-Traffic
Channel
R-ACK
Channel
Decode Failed Decode Failed
Decode
Successful
Multi-slot packet with Early termination
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
38/44
HUAWEI TECHNOLOGIES CO., LTD. Page 38All rights reserved
APAAPB
DRCDRC
Virtual Soft Handoff
Virtual Soft Handoff: AT only receive the data from best one AP, so AT cantget soft handoff gain from forward link. But in reverse link, soft handoff is same
as IS95 system.
All AP receive ATs data composed a PN set. It is called Reverse Active Set.
Shown as following figure ,Access terminal measures (C/I)A > (C/I)B requests
data from APa first. If (C/I)B > (C/I)A , AT will send new DRC cover and DRC
value to APb in order to receive data from APb. After AT get available DRCLock ,AT receive data from APb and only receive the MAC & Pilot from APa.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
39/44
HUAWEI TECHNOLOGIES CO., LTD. Page 39All rights reserved
Forward Link Data from current server
Pilot/MAC on FWD link
Pilot/DRC/ACK/Traffic on REV
Link
(APs in ATs active set)
Forward Link Data from AP4following server change
AP1AP1 AP4AP4
TimeTime
Serving APServing AP
t1t1
ServingAP changeServingAP change
AP1
AP2
AP3
AP4
Soft handoff Adaptive Server Selection
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
40/44
HUAWEI TECHNOLOGIES CO., LTD. Page 40All rights reserved
Chapter 1 IntroductionChapter 1 Introduction
Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface
Chapter 3 New TechnologyChapter 3 New Technology
Chapter 4 Important NumberChapter 4 Important Number
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
41/44
HUAWEI TECHNOLOGIES CO., LTD. Page 41All rights reserved
ESN
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.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
42/44
HUAWEI TECHNOLOGIES CO., LTD. Page 42All rights reserved
SID/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.
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
43/44
HUAWEI TECHNOLOGIES CO., LTD. Page 43All rights reserved
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
ATIType ATIType Description ATI Length
(bits)
'00'
Broadcast ATI (BATI)
0
01 Multicast ATI (MATI) 32
10 Unicast ATI 32
'11' Random ATI (RATI) 32
8/7/2019 01-ORA000403 CDMA2000 1xEV-DO principle-corr
44/44
www.huawei.com
Thank You