技术文档
目录
第一部分 Sync Channel & paging Channel .............................................................................................................. 3 1.1 Sync Channel Message ........................................................................................................................................... 3
SYNC CHANNEL -- Sync Channel Msg ...................................................................................................... 3 1.2 System Parameters Message ................................................................................................................................... 4
PAGING CHANNEL -- System Parameters Msg .......................................................................................... 4 1.3 Extended System Parameters Message ................................................................................................................... 6
Extended System Parameters Msg ....................................................................................................................... 6 1.4 CDMA Channel List Message ................................................................................................................................ 8
PAGING CHANNEL -- CDMA Channel List Msg ....................................................................................... 8 1.5 Access Parameters Message ................................................................................................................................... 8
PAGING CHANNEL -- Access Parameters Msg ........................................................................................... 8 1.6 Neighbor List Message ......................................................................................................................................... 10
PAGING CHANNEL -- Neighbor List Msg & Extended Neighbor List Msg ........................................... 10 第二部分 Call Setup & Response ............................................................................................................................. 11 2.1 General Page Message .......................................................................................................................................... 11
PAGING CHANNEL -- General Page Msg ................................................................................................. 11 2.2 Order Message ...................................................................................................................................................... 13
PAGING CHANNEL -- Order Msg ............................................................................................................. 13 2.3 Origination Message ............................................................................................................................................. 13
ACCESS CHANNEL -- Origination Msg .......................................................................................................... 13 2.4 Extended Channel Assignment Message ........................................................................................................... 15
PAGING CHANNEL -- Extended Channel Assignment Msg ................................................................... 15 IMSI_CLASS_0_TYPE ..................................................................................................................................... 17 2.5 Power Control Message ................................................................................................................................... 18
FORWARD TRAFFIC CHANNEL -- Power Control Msg ......................................................................... 18 2.6 Service Connect Message .................................................................................................................................. 19
FORWARD TRAFFIC CHANNEL -- Service Connect Msg....................................................................... 19 2.7 Service Connect Completion Message ................................................................................................................. 20
REVERSE TRAFFIC CHANNEL -- Service Connect Complete Msg ........................................................ 20 第三部分 Handoff ..................................................................................................................................................... 20 3.1 Pilot Strength Measurement Message ................................................................................................................ 21
REVERSE TRAFFIC CHANNEL -- Pilot Strength Measurement Msg ...................................................... 21 3.2 Universal Handoff Direction Message ................................................................................................................. 22
FORWARD TRAFFIC CHANNEL -- Universal Handoff Direction Msg ................................................... 22 3.3 Handoff Completion Message .............................................................................................................................. 24
REVERSE TRAFFIC CHANNEL -- Handoff Completion Msg ................................................................. 24 3.4 Extended Neighbor List Update Message ............................................................................................................ 25
FORWARD TRAFFIC CHANNEL -- Extended Neighbor List Update Msg .............................................. 25 第四部分 Enhanced hard handoff（暂时没log） ................................................................................................. 26 4.1 Candidate Frequency Search Request Message .................................................................................................... 26
FORWARD TRAFFIC CHANNEL -- Candidate Frequency Search Request Msg ..................................... 26 4.2 Candidate Frequency Search Response Message ................................................................................................. 26
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REVERSE TRAFFIC CHANNEL -- Candidate Frequency Search Response Msg .................................... 26 4.3 Candidate Frequency Search Report Message ...................................................................................................... 26
REVERSE TRAFFIC CHANNEL -- Candidate Frequency Search Report Msg ......................................... 26 4.4 Candidate Frequency Search Control ................................................................................................................... 26 4.5 Release Order Message ........................................................................................................................................ 26
REVERSE TRAFFIC CHANNEL -- Order Msg ......................................................................................... 26 第五部分 Registration ............................................................................................................................................... 26 5.1 Registration Message ........................................................................................................................................... 27
ACCESS CHANNEL -- Registration Msg ......................................................................................................... 27
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技术文档
第一部分 Sync Channel & paging Channel 1.1 Sync Channel Message
Sync Channel Msg 使手机与系统时间同步，考虑fading margin Sync Channel 的速率一般为1200bps。Sync Channel Msg 一般出现在两种情况下：一是每次通话结束时需重新同步，此时ms可能因为长时间的通话而与系统时间偏差较大；二是在ms从初始化状态到搜索导频以后，即切换、切换失败后或者关开机以后，此时ms需重新同步到系统。手机在初始化状态后，Rake接收机的搜索器会搜索从0到511全部的PN导频信号,然后确定最强（Ec/Io）的PN作为Reference PN，进一步解调同步信道。手机通过Sync Channel Msg确定系统时间、导频信道、寻呼信道的寻呼速率等参数，然后转入空闲状态，等待寻呼消息。如果手机在15秒之内无法完成搜速导频的过程，则重新初始化。
Sync Channel Msg 中包含protocol revision level系统版本信息、Minimum protocol revision系统允许接入的最低版本手机（其值的具体含义为1:IS95, 2:IS95A, 3:TSB74, 4,5:IS95B, 6:IS95C/CDMA2000）。Paging Channel Data Rate指的是寻呼信道的速率，寻呼信道的设定和网络负荷有关，如果网络负荷较大（寻呼量较大），则设为9600;如果寻呼负荷较小，则设置为4800bps,此时网络运行更加稳定。
SYNC CHANNEL -- Sync Channel Msg
protocol_rev = 2 (IS95A )
Minimum protocol revision =2?系统允许接入的最低版本手机 . sid =14148? ①
nid = 11? ② pn =150
long code state = 2330104669 ? 长码状态 system time = 334438280 ?系统时间 leap seconds = 15 ? 闰秒
local time offset =16 ? 本地时间偏置 (30minute unit) 16*30minute = 8 Hour
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daylight indicator = 0 ? daylight savings time (Allow ?1?, prohibit ?0?)
Paging Channel Data Rate= 9600bps ? 寻呼信道速率bps 9600bps 或者 4800bps cdma_freq = 58 ? CDMA频点号，寻呼信道所在频点 ext_cdma_freq =330 ? 快速寻呼信道所在频点 注释：
①②SID, NID
SID、NID是帮助手机实现漫游功能的、当手机收到的NID、SID与手机注册登记的NID、SID不匹配的时候，手机产生漫游。SID = service provider idenfication number、NID = MSC idenfication number，SID下可以有多个NID.
SID=0 SID=2
NID=A NID=B SID=1 SID=3 SID=4 1.2 System Parameters Message
paging channel 含有两类消息类型，分别是开销消息和寻呼消息： PAGING CHANNEL -- System Parameters Msg
所有消息均有config_msg_seq，ms只可管理一个ACTIVE PN，根据config_msg_seq确定是否需要搜索此系统消息。手机在两种情况下会重新更新系统消息，一种是MS收到新的config_msg_seq值，第二种是MS保存的config_msg_seq超过600秒没有更新，此时MS会重新搜索系统消息。系统参数消息是以扇区为单位下发给手机的，不同的扇区具有不同的系统参数设置。系统参数消息中包含有手机位置更新消息、所属SID/NID、切换的各种参数等。有关切换的各种参数在HDM、UHDM消息中也包含有。
MAX_slot_cycle_index是系统下发的寻呼周期，MS也有自身的寻呼循环周期，MS对比两值，取最小的值作为手机搜寻寻呼消息的周期。
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技术文档
pilot_pn =147
config_msg_seq = 29 <-当MS在寻呼信道中接收到系统参数消息，MS会把消息中的
“configuration message sequence number”, “CONFIG_MSG_SEQr, SYS_PAR_M
SG_SEQs” 和MS存储的值作比较。如果值一样，MS会忽略此条消息。如果不同，M
S会更新系统参数消息。
sid =14148 <- System identification nid = 11<- Network identification
reg_zone = 1 <- Registration zone number位置更新的参数
total_zones = 2 <-此值为在基于zone的位置更新中MS的 zone number。此值为“0”，表示没有zone-based
registration 。此值如果大于0，设置越大，MS越省电，但同时在zone的边界区MS被一次寻呼成功的比例会下降。
zone_timer = 1 (2 Minutes)
mult_sids = 0 <- ?1?使用不同的 SID. ?0?则反之。 mult_nids = 0 <-?1?使用不同的 NID. ?0?则反之。 base_id = 12131
base_class = 0 (Public Macrocellular System) <-基站类型标识 注释①
page_chan = 1 <- paging channel计数器
max_slot_cycle_index = 1 <-1.28秒*2的Sci次方 监听寻呼消息 home_reg = 1 for_sid_reg = 1
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