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(普通问题)
提问者:
• 现在还有必要学GSM和CDMA吗 2020-09-29
• CDMA2000网络中如何有效控制用户的发射功率实现具体流程 2020-06-20
• CDMA中的2000是什么意思 2020-05-15
• 华为CDMA主控板登录不了 2019-11-17
• 联通wCDMA专项日常优化中兴中兴资料 2019-10-18
• WCDMA导频功率是什么 2019-08-13
• WCDMA室内分布系统拿什么软件画图 2019-06-12
• 有没有关于WCDMA所以资料 2019-05-16
• CDMA2000网络中如何有效控制用户的发射功率实现具体流程 2020-06-20
• CDMA中的2000是什么意思 2020-05-15
• 华为CDMA主控板登录不了 2019-11-17
• 联通wCDMA专项日常优化中兴中兴资料 2019-10-18
• WCDMA导频功率是什么 2019-08-13
• WCDMA室内分布系统拿什么软件画图 2019-06-12
• 有没有关于WCDMA所以资料 2019-05-16
问题答案
( 1 )
AQDL Downlink Audio Quality MOS值
AQI Audio Quality Information MOS信息
CAA Call Attempt 呼叫尝试
CAC Call Connect Success 呼叫成功
CAD Call Disconnect 通话结束
CAI Incoming Call 呼入
CAF Call Failed 呼叫失败
CHI Channel Info 信道信息
CI Carrier Interference C/I，载干比
CREL Cell Reselection 小区重选
DSC Downlink Signaling Counter 下行信令计数
ERXL Enhanced RX Level 增强型电平
FER Frame. Error Rate 误帧率
HOA Handover Attempt 切换尝试
HOF Handover Failure 切换失败
HOP Frequency Hopping Status 跳频状态
HOS Handover Success 切换成功
L2D Layer 2 Downlink 第二层下行信令
L2U Layer 2 Uplink 第二层上行信令
L3D Layer 3 Downlink 第三层下行信令
L3U Layer 3 Uplink 第三层上行信令
LUA Location Update Attempt 位置更新尝试
LUS Location Update Accepted 位置更新成功
LUF Location Update Failure 位置更新失败
MSP MS Power 手机功率
NLIST Neighbor List 邻区列表
PCHI Packet Channel Info GPRS信道信息
RLT Radio Link Timeout 无线链路超时
RXL RX Level 电平
RXQ RX Quality 通话质量
SEI Service Information 服务信息
TAD Timing Advance TA值
TBFI TBF Information
§1.2几个主要ID的解释
1 AQDL (Downlink Audio Quality) 2 3.6
Audio Quality Mean: 3.3 MOS值 第二项
2 AQI(Audio Quality Information) 3 -1 1
Sync Status: Synchronized 第三项
1 同步 0 不同步
3 CAD(Call Disconnect) 1 114 16
1 16
Status CC Cause
1 = Normal disconnect
2 = Dropped call. (i.e., network release)
3 = Dropped out of service.
4 = Dropped during handover/handoff/hard handover
5 = Reserved (保留字段),例如:测试设备原因
6 = Transfer timeout during data or fax test call
7 = Protocol error during data or fax test call
8 = Transfer failed during data or fax test call
9 = Modem connection failure.
Dedicated connection already achieved
10= Network busy (GSM) When network has not sent ALERT or CONNECT message before it sends DISCONNECT message
11 = Voice quality synchronization lost 1 Unassigned (unallocated number)
3 No route to destination
6 Channel unacceptable
8 Operator determined barring
16 Normal clearing
17 User busy
18 No user responding
19 User alerting, no answer
21 Call rejected
22 Number changed
26 Non selected user clearing
27 Destination out of order
28 Invalid number format (incomplete number)
29 Facility rejected
30 Response to STATUS ENQUIRY
31 Normal, unspecified
34 No circuit/channel available
38 Network out of order
41 Temporary failure
42 Switching equipment congestion
43 Access information discarded
44 Requested circuit/Channel not available
47 Resources unavailable, unspecified
49 Quality of service unavailable
50 Requested facility not subscribed
55 Incoming calls barred within the CUG
57 Bearer capability not authorized
58 Bearer capability not presently available
63 Sevice or option not available, unspecified
65 Bearer service not implemented
69 Requested facility not implemented
70 Only restricted digital information bearer
capability is available
79 Service or option not implemented, unspecified
81 Invalid transaction indentifier value
87 User not member of CUG
88 Incompatible destination
91 Invalid transit network selection
95 Semantically incorrect message NEMO TECHNOLOGIES 233
96 Invalid mandatory information
97 Message type not non-existent
98 Message type not compatible with protocol state
99 Information element non existent or not implemented
100 Conditional IE error
101 Message not compatible with protocol state
102 Recovery on timer expiry
111 Protocol error, unspecified
127 Interworking, unspecified
4 CAF(Call Failed) 5 2 -1
State: Test system failure,参考CAD(Call Disconnect) 第一项
OS RAS Cause: n/a
5 CHI(Channel Info 信道信息) 1 2 74 41791 14101 -1 1 64 13 5 74
1 2 74 41791 14101 -1 1 64 13 5 74
Channel Type Carrier Number Cell Id LAC RLT Extended Channel Type Timeslot BCCH
1 = control channel
2 = traffic channel
载频
频点 小区 位置区 -1 = Not Available
1 = BCCH
2 = CCCH
3 = CBCH
4 = SDCCH
5 = RACH
10 = TCH half rate, first half
11 = TCH half rate, second half
12 = TCH full rate
13 = TCH enhanced full rate
14 = TCH full rate, 14,4kbs data
15 = TCH full rate, 9,6kbs data
16 = TCH full rate, 7,2kbs data
17 = TCH full rate, 4,8kbs data
18 = TCH full rate, 2,4kbs data
19 = TCH half rate, 4,8kbs data, first half
20 = TCH half rate, 4,8kbs data, second half
21 = TCH half rate, 2,4kbs data, first half
22 = TCH half rate, 2,4kbs data, second half
23 = TCH full rate FACCH
24 = TCH half rate FACCH, first half
25 = TCH half rate FACCH, second half
26 = AFS (Adaptive full rate speech)
27 = AHS (Adaptive half rate speech)
50 = PBCCH
51 = PCCCH
60 = PDTCH 时隙 频点
6 CI(Carrier Interference C/I，载干比) 1 21 0
Channel C/I: 21.8 第二项
7 HOF(Handover Failure切换失败)
8 L3U (Layer 3 Uplink) RACH CHANNEL REQUEST 46
Originating Speech Call Location Update Answer to Paging
40,41,42,43,44,45,46,47,48,
49,4A,4B,4C,4D,4E,4F,E7 01,02,03,04,05,06,07,08,
09,0A,0B,0C,0D,0E,0F 31,32,33,34,35,36,37,38,
39,3A,3B,3C,3D,3E,3F
§2 正常信令流程
§2.1 呼叫建立及主叫释放信令流程
Mobile originating call establishment
a) Call clearing initiated by the network
b）Call clearing initiated by the MS
1 Call Attempt 18:52:13.947（CAA）呼叫尝试
Call Type: Voice call 呼叫类型
Count: 1 第几次呼叫
Phone Number: 13673640441 被叫号码
2 Layer 3 Downlink 18:52:14.152 SYSTEM INFORMATION TYPE 2
邻小区BCCH频点描述：携带BA和BA-IND（BCCH分配序号指示）
NCC Permitted 网络色码允许
RACH控制消息：
Max Retrans 最大重传次数
TX-integer 扩展传输时系数
RE 是否允许呼叫重建
EC 紧急呼叫
CBA 小区是否被禁止
ACC 被限制接入的用户级别
在BCCH上发送 用于小区重选
3 Layer 3 Downlink 18:52:14.153 SYSTEM INFORMATION TYPE 3
CELL ID小区识别
LAC 位置区识别
控制信道描述：
ATT 移动台附着分离允许指示
BS-AG-BLKS-RES 接入允许AGCH块数
CCCH-CONF 公共控制信道结构,即信道组合方式
CBQ2 Cell Bar Qualify 2 inactive
BS-PA-MFRMS 传输寻呼消息留给同一寻呼组的51TDMA复帧数
T3212 timeout 周期性位置更新时间 30(=3 hours)
小区选项：
RADIO-LINK-TIMEOUT 无线链路超时 64
DTX 不连续发射指示
PWRC 功率控制指示
小区选择参数
CELL-RESELECT-HYSTERESIS 小区重选滞后值 6dB
MS-TXPWR-MAX-CCH 移动台接入小区应使用的最大TX功率电平 5
RXLEV-ACCESS-MIN 最小接入电平RXP 12
NECI: Half rate support: New establishment causes are supported
ACS 系统消息16,17不在BCCH上发送
RACH控制参数:同系统消息2
其余参数:掩码发送控制,GPRS指示
下行消息,在BCCH上发送.
4 Layer 3 Downlink 18:52:14.154 SYSTEM INFORMATION TYPE 4
下行消息在 BCCH上发送
和SYSTEM INFORMATION TYPE 3基本一样,不同的是包含CBCH信道描述,CBCH移动配置.
5 Layer 2 Downlink 18:52:14.174 CCCH FILL
6 Layer 2 Downlink 18:52:14.193 CCCH UNIT_DATA
7 Layer 3 Downlink 18:52:14.193 CCCH PAGING REQUEST TYPE 1
Paging mode: Normal paging 寻呼模式:正常的寻呼
5,6,7信令是公共控制信道的信息, CCCH: 共用控制信道, 它的子通道PCH(PAGING CHANNEL)在CCCH上. 手机能认出并用一个RACH作出反应.; 还有子通道AGCH 访问认可通道, 命令手机进入SDCCH或TCH.: 是双向控制信道, CCCH和BCH在多帧上分享0时隙；CCCH包括RACH; PCH; AGCH; CBCH; PCH呼叫通道 用于运载IMSI报知手机有呼叫、PCH是下行通道
8 Cell Reselection 18:52:14.406 1 14101 41102 1 14101 41101
Old Cellular System: GSM 900
Old LAC: 14101
Old Cell Identification: 41102
New Cellular System: GSM 900
New LAC: 14101
New Cell Identification: 41101
9 Channel Info 18:52:14.406 目标小区信道信息
Cellular System: GSM 900
Channel Type: Control channel
Carrier Number: 94
Cell Identification: 41101
LAC: 14101
Uplink DTX: n/a
Radio Link Timeout: n/a
Extended Channel Type: CCCH
Timeslot number: n/a
BCCH ARFCN: 94
10 Neighbor List 18:52:14.406 邻区信息
Number of Neighbor List Header Params: 0
Number of Neighbor List Items: 20 邻区数
Neighbor Channel (1)
Cellular System: GSM 900
UARFCN: 64
BSIC: -1
列出20个邻区列表中20个邻区的频点和BSIC
11 RX Level 18:52:14.406 当前小区和其邻区测量信息
Serving Cell
Channel Number: 94
BSIC: 37
RX Level Full: -40
RX Level Sub: -40
C1: 36
C2: 36
列出当前小区和最强的6个邻区测量信息
12 Enhanced RX Level 18:52:14.406
Cellular System: GSM 900
Number of Channels: 8
Number of Parameters per Channel: 16
Serving Cell --
Channel Number: 94
Base Station Identification Code: 37
RX Level Full: -40 dBm
RX Level Sub: -40 dBm
C1: 36
C2: 36
C31: n/a
C32: n/a
HCS Priority Class: n/a
HCS Threshold: n/a
Cell Identification (16-bit): 41101
Location Area Code: 14101
Routing Area Code: 0
Neighbor Cell (1) --
Channel Number: 82
Base Station Identification Code: 16
RX Level: -65 dBm
C1: 34
C2: 34
C31: n/a
C32: n/a
HCS Priority Class: n/a
HCS Threshold: n/a
Cell Identification (16-bit): 41103
Location Area Code: 14101
Routing Area Code: n/a
列出当前小区和最强的6个邻区测量信息
当开始小区重选时,手机将尽快同步和读取6个最强的非服务区BCCH载频信息.手机每隔30秒解码完一次服务小区的所有BCCH数据,至少每隔5分钟解码一次最强的6个非服务小区BCCH载频中携带的影响小区重选的参数的BCCH数据块.
13 Layer 2 Uplink 18:52:14.646 RANDOM_ACCESS_BURST（MS->BTS,RACH）
上行的随机接入脉冲序列,在RACH信道上发送，用于向网络发起初始的信道请求并用于切换时的接入.
14 Layer 3 Uplink 18:52:14.646 RACH CHANNEL REQUEST（MS->BTS,BTS->BSC）
信道请求 3bit，Establishment Cause，包含信道请求的原因，主叫/被叫/位置更新。紧急呼叫，数据业务，短消息等。另外，还包括5bit的由手机随机选择的鉴别符（Random Reference），鉴别符用于区分在同一时刻向网络发起请求的地不同手机，最多可以区分32个，在随后系统下发的立即支配命令中，网络会向手机下发这个鉴别符，基站接收到手机的请求后，把这些信息传送给BSC，这些信息中包含重要的附加信息和BTS对TA值的估计。手机将自己的鉴别符合网络下发的鉴别符进行比较，来判断是不是发给自己的消息。还在每次移动台发送接入请求后，将启动T3120定时器，并准备接收或者拒绝立即指配消息，超时或未接收到立即指配消息会重发接入请求，（尝试最大次数由RET决定），当达到最大重发次数且T3120超时后将启动T3126定时器，并继续等待立即指配消息，T3126超时后，将发生小区重选。
hex data: 46 信道请求原因代号-〉1000110
意思是用于主叫寻呼并且支持半速率
NECI 0 不支持半速率
1 支持半速率
CHANNEL ACTIVATION(BSC->BTS)
接收到信道请求后，BSC为这个呼叫分配一个SDCCH信道，向BTS发送一个信道激活的消息，包含以下信息：DTX，信道描述，手机，基站最大发射功率，BSC计算的TA值，跳频指示等。
CHANNEL ACTIVATION ACK(BTS -> BSC)
对信道激活的确认消息，在SACCH上传送
15 Layer 3 Downlink 18:52:14.760 CCCH IMMEDIATE ASSIGNMENT(BSC->BTS) (BTS -> MS)
立即指配的目的是在Um接口上建立移动台与系统间的无线连接，即RR连接。先由BSC告诉BTS，然后由BTS下发给移动台。在AGCH信道上下发，消息中包含对所分配的SDCCH信道特特性的描述：寻呼类型，SDCCH信道描述，跳频指示，TA值等。
如果SDCCH拥塞，BSC将在此发送的是立即支配拒绝的消息，手机收到立即支配拒绝消息后，将会返回空闲信道，守候在寻呼信道上。
信道描述：
时隙：1
信道组合方式和TDMA偏置：SDCCH/8 + SACCH/C8 or CBCH (SDCCH/8)
子信道：3
训练序列码（TSC=BCC）: 7
跳频信道类型
AQI Audio Quality Information MOS信息
CAA Call Attempt 呼叫尝试
CAC Call Connect Success 呼叫成功
CAD Call Disconnect 通话结束
CAI Incoming Call 呼入
CAF Call Failed 呼叫失败
CHI Channel Info 信道信息
CI Carrier Interference C/I，载干比
CREL Cell Reselection 小区重选
DSC Downlink Signaling Counter 下行信令计数
ERXL Enhanced RX Level 增强型电平
FER Frame. Error Rate 误帧率
HOA Handover Attempt 切换尝试
HOF Handover Failure 切换失败
HOP Frequency Hopping Status 跳频状态
HOS Handover Success 切换成功
L2D Layer 2 Downlink 第二层下行信令
L2U Layer 2 Uplink 第二层上行信令
L3D Layer 3 Downlink 第三层下行信令
L3U Layer 3 Uplink 第三层上行信令
LUA Location Update Attempt 位置更新尝试
LUS Location Update Accepted 位置更新成功
LUF Location Update Failure 位置更新失败
MSP MS Power 手机功率
NLIST Neighbor List 邻区列表
PCHI Packet Channel Info GPRS信道信息
RLT Radio Link Timeout 无线链路超时
RXL RX Level 电平
RXQ RX Quality 通话质量
SEI Service Information 服务信息
TAD Timing Advance TA值
TBFI TBF Information
§1.2几个主要ID的解释
1 AQDL (Downlink Audio Quality) 2 3.6
Audio Quality Mean: 3.3 MOS值 第二项
2 AQI(Audio Quality Information) 3 -1 1
Sync Status: Synchronized 第三项
1 同步 0 不同步
3 CAD(Call Disconnect) 1 114 16
1 16
Status CC Cause
1 = Normal disconnect
2 = Dropped call. (i.e., network release)
3 = Dropped out of service.
4 = Dropped during handover/handoff/hard handover
5 = Reserved (保留字段),例如:测试设备原因
6 = Transfer timeout during data or fax test call
7 = Protocol error during data or fax test call
8 = Transfer failed during data or fax test call
9 = Modem connection failure.
Dedicated connection already achieved
10= Network busy (GSM) When network has not sent ALERT or CONNECT message before it sends DISCONNECT message
11 = Voice quality synchronization lost 1 Unassigned (unallocated number)
3 No route to destination
6 Channel unacceptable
8 Operator determined barring
16 Normal clearing
17 User busy
18 No user responding
19 User alerting, no answer
21 Call rejected
22 Number changed
26 Non selected user clearing
27 Destination out of order
28 Invalid number format (incomplete number)
29 Facility rejected
30 Response to STATUS ENQUIRY
31 Normal, unspecified
34 No circuit/channel available
38 Network out of order
41 Temporary failure
42 Switching equipment congestion
43 Access information discarded
44 Requested circuit/Channel not available
47 Resources unavailable, unspecified
49 Quality of service unavailable
50 Requested facility not subscribed
55 Incoming calls barred within the CUG
57 Bearer capability not authorized
58 Bearer capability not presently available
63 Sevice or option not available, unspecified
65 Bearer service not implemented
69 Requested facility not implemented
70 Only restricted digital information bearer
capability is available
79 Service or option not implemented, unspecified
81 Invalid transaction indentifier value
87 User not member of CUG
88 Incompatible destination
91 Invalid transit network selection
95 Semantically incorrect message NEMO TECHNOLOGIES 233
96 Invalid mandatory information
97 Message type not non-existent
98 Message type not compatible with protocol state
99 Information element non existent or not implemented
100 Conditional IE error
101 Message not compatible with protocol state
102 Recovery on timer expiry
111 Protocol error, unspecified
127 Interworking, unspecified
4 CAF(Call Failed) 5 2 -1
State: Test system failure,参考CAD(Call Disconnect) 第一项
OS RAS Cause: n/a
5 CHI(Channel Info 信道信息) 1 2 74 41791 14101 -1 1 64 13 5 74
1 2 74 41791 14101 -1 1 64 13 5 74
Channel Type Carrier Number Cell Id LAC RLT Extended Channel Type Timeslot BCCH
1 = control channel
2 = traffic channel
载频
频点 小区 位置区 -1 = Not Available
1 = BCCH
2 = CCCH
3 = CBCH
4 = SDCCH
5 = RACH
10 = TCH half rate, first half
11 = TCH half rate, second half
12 = TCH full rate
13 = TCH enhanced full rate
14 = TCH full rate, 14,4kbs data
15 = TCH full rate, 9,6kbs data
16 = TCH full rate, 7,2kbs data
17 = TCH full rate, 4,8kbs data
18 = TCH full rate, 2,4kbs data
19 = TCH half rate, 4,8kbs data, first half
20 = TCH half rate, 4,8kbs data, second half
21 = TCH half rate, 2,4kbs data, first half
22 = TCH half rate, 2,4kbs data, second half
23 = TCH full rate FACCH
24 = TCH half rate FACCH, first half
25 = TCH half rate FACCH, second half
26 = AFS (Adaptive full rate speech)
27 = AHS (Adaptive half rate speech)
50 = PBCCH
51 = PCCCH
60 = PDTCH 时隙 频点
6 CI(Carrier Interference C/I，载干比) 1 21 0
Channel C/I: 21.8 第二项
7 HOF(Handover Failure切换失败)
8 L3U (Layer 3 Uplink) RACH CHANNEL REQUEST 46
Originating Speech Call Location Update Answer to Paging
40,41,42,43,44,45,46,47,48,
49,4A,4B,4C,4D,4E,4F,E7 01,02,03,04,05,06,07,08,
09,0A,0B,0C,0D,0E,0F 31,32,33,34,35,36,37,38,
39,3A,3B,3C,3D,3E,3F
§2 正常信令流程
§2.1 呼叫建立及主叫释放信令流程
Mobile originating call establishment
a) Call clearing initiated by the network
b）Call clearing initiated by the MS
1 Call Attempt 18:52:13.947（CAA）呼叫尝试
Call Type: Voice call 呼叫类型
Count: 1 第几次呼叫
Phone Number: 13673640441 被叫号码
2 Layer 3 Downlink 18:52:14.152 SYSTEM INFORMATION TYPE 2
邻小区BCCH频点描述：携带BA和BA-IND（BCCH分配序号指示）
NCC Permitted 网络色码允许
RACH控制消息：
Max Retrans 最大重传次数
TX-integer 扩展传输时系数
RE 是否允许呼叫重建
EC 紧急呼叫
CBA 小区是否被禁止
ACC 被限制接入的用户级别
在BCCH上发送 用于小区重选
3 Layer 3 Downlink 18:52:14.153 SYSTEM INFORMATION TYPE 3
CELL ID小区识别
LAC 位置区识别
控制信道描述：
ATT 移动台附着分离允许指示
BS-AG-BLKS-RES 接入允许AGCH块数
CCCH-CONF 公共控制信道结构,即信道组合方式
CBQ2 Cell Bar Qualify 2 inactive
BS-PA-MFRMS 传输寻呼消息留给同一寻呼组的51TDMA复帧数
T3212 timeout 周期性位置更新时间 30(=3 hours)
小区选项：
RADIO-LINK-TIMEOUT 无线链路超时 64
DTX 不连续发射指示
PWRC 功率控制指示
小区选择参数
CELL-RESELECT-HYSTERESIS 小区重选滞后值 6dB
MS-TXPWR-MAX-CCH 移动台接入小区应使用的最大TX功率电平 5
RXLEV-ACCESS-MIN 最小接入电平RXP 12
NECI: Half rate support: New establishment causes are supported
ACS 系统消息16,17不在BCCH上发送
RACH控制参数:同系统消息2
其余参数:掩码发送控制,GPRS指示
下行消息,在BCCH上发送.
4 Layer 3 Downlink 18:52:14.154 SYSTEM INFORMATION TYPE 4
下行消息在 BCCH上发送
和SYSTEM INFORMATION TYPE 3基本一样,不同的是包含CBCH信道描述,CBCH移动配置.
5 Layer 2 Downlink 18:52:14.174 CCCH FILL
6 Layer 2 Downlink 18:52:14.193 CCCH UNIT_DATA
7 Layer 3 Downlink 18:52:14.193 CCCH PAGING REQUEST TYPE 1
Paging mode: Normal paging 寻呼模式:正常的寻呼
5,6,7信令是公共控制信道的信息, CCCH: 共用控制信道, 它的子通道PCH(PAGING CHANNEL)在CCCH上. 手机能认出并用一个RACH作出反应.; 还有子通道AGCH 访问认可通道, 命令手机进入SDCCH或TCH.: 是双向控制信道, CCCH和BCH在多帧上分享0时隙；CCCH包括RACH; PCH; AGCH; CBCH; PCH呼叫通道 用于运载IMSI报知手机有呼叫、PCH是下行通道
8 Cell Reselection 18:52:14.406 1 14101 41102 1 14101 41101
Old Cellular System: GSM 900
Old LAC: 14101
Old Cell Identification: 41102
New Cellular System: GSM 900
New LAC: 14101
New Cell Identification: 41101
9 Channel Info 18:52:14.406 目标小区信道信息
Cellular System: GSM 900
Channel Type: Control channel
Carrier Number: 94
Cell Identification: 41101
LAC: 14101
Uplink DTX: n/a
Radio Link Timeout: n/a
Extended Channel Type: CCCH
Timeslot number: n/a
BCCH ARFCN: 94
10 Neighbor List 18:52:14.406 邻区信息
Number of Neighbor List Header Params: 0
Number of Neighbor List Items: 20 邻区数
Neighbor Channel (1)
Cellular System: GSM 900
UARFCN: 64
BSIC: -1
列出20个邻区列表中20个邻区的频点和BSIC
11 RX Level 18:52:14.406 当前小区和其邻区测量信息
Serving Cell
Channel Number: 94
BSIC: 37
RX Level Full: -40
RX Level Sub: -40
C1: 36
C2: 36
列出当前小区和最强的6个邻区测量信息
12 Enhanced RX Level 18:52:14.406
Cellular System: GSM 900
Number of Channels: 8
Number of Parameters per Channel: 16
Serving Cell --
Channel Number: 94
Base Station Identification Code: 37
RX Level Full: -40 dBm
RX Level Sub: -40 dBm
C1: 36
C2: 36
C31: n/a
C32: n/a
HCS Priority Class: n/a
HCS Threshold: n/a
Cell Identification (16-bit): 41101
Location Area Code: 14101
Routing Area Code: 0
Neighbor Cell (1) --
Channel Number: 82
Base Station Identification Code: 16
RX Level: -65 dBm
C1: 34
C2: 34
C31: n/a
C32: n/a
HCS Priority Class: n/a
HCS Threshold: n/a
Cell Identification (16-bit): 41103
Location Area Code: 14101
Routing Area Code: n/a
列出当前小区和最强的6个邻区测量信息
当开始小区重选时,手机将尽快同步和读取6个最强的非服务区BCCH载频信息.手机每隔30秒解码完一次服务小区的所有BCCH数据,至少每隔5分钟解码一次最强的6个非服务小区BCCH载频中携带的影响小区重选的参数的BCCH数据块.
13 Layer 2 Uplink 18:52:14.646 RANDOM_ACCESS_BURST（MS->BTS,RACH）
上行的随机接入脉冲序列,在RACH信道上发送，用于向网络发起初始的信道请求并用于切换时的接入.
14 Layer 3 Uplink 18:52:14.646 RACH CHANNEL REQUEST（MS->BTS,BTS->BSC）
信道请求 3bit，Establishment Cause，包含信道请求的原因，主叫/被叫/位置更新。紧急呼叫，数据业务，短消息等。另外，还包括5bit的由手机随机选择的鉴别符（Random Reference），鉴别符用于区分在同一时刻向网络发起请求的地不同手机，最多可以区分32个，在随后系统下发的立即支配命令中，网络会向手机下发这个鉴别符，基站接收到手机的请求后，把这些信息传送给BSC，这些信息中包含重要的附加信息和BTS对TA值的估计。手机将自己的鉴别符合网络下发的鉴别符进行比较，来判断是不是发给自己的消息。还在每次移动台发送接入请求后，将启动T3120定时器，并准备接收或者拒绝立即指配消息，超时或未接收到立即指配消息会重发接入请求，（尝试最大次数由RET决定），当达到最大重发次数且T3120超时后将启动T3126定时器，并继续等待立即指配消息，T3126超时后，将发生小区重选。
hex data: 46 信道请求原因代号-〉1000110
意思是用于主叫寻呼并且支持半速率
NECI 0 不支持半速率
1 支持半速率
CHANNEL ACTIVATION(BSC->BTS)
接收到信道请求后，BSC为这个呼叫分配一个SDCCH信道，向BTS发送一个信道激活的消息，包含以下信息：DTX，信道描述，手机，基站最大发射功率，BSC计算的TA值，跳频指示等。
CHANNEL ACTIVATION ACK(BTS -> BSC)
对信道激活的确认消息，在SACCH上传送
15 Layer 3 Downlink 18:52:14.760 CCCH IMMEDIATE ASSIGNMENT(BSC->BTS) (BTS -> MS)
立即指配的目的是在Um接口上建立移动台与系统间的无线连接，即RR连接。先由BSC告诉BTS，然后由BTS下发给移动台。在AGCH信道上下发，消息中包含对所分配的SDCCH信道特特性的描述：寻呼类型，SDCCH信道描述，跳频指示，TA值等。
如果SDCCH拥塞，BSC将在此发送的是立即支配拒绝的消息，手机收到立即支配拒绝消息后，将会返回空闲信道，守候在寻呼信道上。
信道描述：
时隙：1
信道组合方式和TDMA偏置：SDCCH/8 + SACCH/C8 or CBCH (SDCCH/8)
子信道：3
训练序列码（TSC=BCC）: 7
跳频信道类型
回答者：
snowolf112
回答时间：2011-07-20 15:43
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