GSM信令讲义xyf(7)

4.46 连接证实

MS用这条消息告诉MSC，目前MS正处于”激活”状态。

LAYER 3 UPLINK Time: 10:16:25.699 CONNECT ACKNOWLEDGE 3GPP TS 24.008 ver 5.6.0 Rel 5 (9.3.6) M Protocol Discriminator (hex data: 3) (0x3) Call control (call related SS message) M Transaction Identifier (hex data: 0) TI flag: 0 (the message is sent from the side that originates the TI) TI value: 0 M Message Type (hex data: 8f) Message number: 143 Layer 3 data: 03 8f 4.47 连接证实

此消息被送往MSC。

4.48 测量报告

在建立了主信令信道后，移动台每秒发送两次关于话音质量的测量报告。

SYSTEM INFORMATION TYPE 6 LAYER 3 DOWNLINK Time: 10:16:25.948 SYSTEM INFORMATION TYPE 6 3GPP TS 04.18 ver 8.13.0 Rel 1999 (9.1.40) M Protocol Discriminator (hex data: 6) (0x6) Radio resource management message M Skip Indicator (hex data: 0) Value: 0 M Message Type (hex data: 1e) Message number: 30 M Cell Identity (hex data: 29e1) CI value: 10721 M Location Area Identification (hex data: 64f00075 10) MCC digits: 460 MNC digits: 0 LAC: 29968 M Cell Options (hex data: 1f) RADIO-LINK-TIMEOUT: 64 DTX (MS' uplink discontinuous transmission use): MS shall use on a TCH-F, MS shall not use on a TCH-H Power control indicator: PWRC is not set M NCC Permitted (hex data: 30) BCCH carriers permitted for monitoring: 4 5 BCCH carriers not permitted for monitoring: 0 1 2 3 6 7 M SI 6 Rest Octets (hex data: 2b2b2b2b 2b2b2b) Layer 3 data: 06 1e 29 e1 64 f0 00 75 10 1f 30 2b 2b 2b 2b 2b 2b 2b MEASUREMENT REPORT LAYER 3 UPLINK Time: 10:16:26.043 MEASUREMENT REPORT 3GPP TS 04.18 ver 8.13.0 Rel 1999 (9.1.21) M Protocol Discriminator (hex data: 6) (0x6) Radio resource management message M Skip Indicator (hex data: 0) Value: 0 M Message Type (hex data: 15) Message number: 21 M Measurement Result (hex data: 773701b1 6c77aa5b ed45f586 f9514c6e) BA-USED: 0 DTX was used RXLEV-FULL-SERVING-CELL: 55 (-56 dBm to -55 dBm) RXLEV-SUB-SERVING-CELL: 55 (-56 dBm to -55 dBm) RXQUAL-FULL-SERVING-CELL: 0 RXQUAL-SUB-SERVING-CELL: 0 3G-BA-USED: 0 Measurement results: valid Neighbour cell 1 RXLEV: 49 (-62 dBm to -61 dBm) BCCH-FREQ-N: 13 BSIC: 35 Neighbour cell 2 RXLEV: 47 (-64 dBm to -63 dBm) BCCH-FREQ-N: 10 BSIC: 37 Neighbour cell 3 RXLEV: 47 (-64 dBm to -63 dBm) BCCH-FREQ-N: 22 BSIC: 40 Neighbour cell 4 RXLEV: 47 (-64 dBm to -63 dBm) BCCH-FREQ-N: 21 BSIC: 33 Neighbour cell 5 RXLEV: 47 (-64 dBm to -63 dBm) BCCH-FREQ-N: 18 BSIC: 40 Neighbour cell 6 RXLEV: 41 (-70 dBm to -69 dBm) BCCH-FREQ-N: 17 BSIC: 46 Layer 3 data: 06 15 77 37 01 b1 6c 77 aa 5b ed 45 f5 86 f9 51 4c 6e SYSTEM INFORMATION TYPE 5 LAYER 3 DOWNLINK Time: 10:16:26.476 SYSTEM INFORMATION TYPE 5 3GPP TS 04.18 ver 8.13.0 Rel 1999 (9.1.37) M Protocol Discriminator (hex data: 6) (0x6) Radio resource management message M Skip Indicator (hex data: 0) Value: 0 M Message Type (hex data: 1d) Message number: 29 M BCCH Frequency List (hex data: 00000000 2032dc5e 00480001 01410482) The information element carries the complete BA BA-IND (BCCH allocation sequence number indication): 0 Format notation: Bitmap 0 2 8 11 17 23 25 33 52 55 66 67 68 69 71 75 76 77 79 80 82 85 86 94 Layer 3 data: 06 1d 00 00 00 00 20 32 dc 5e 00 48 00 01 01 41 04 82

4.49 预处理测量结果

如果这些测量报告在BTS中已经过预处理，则测量结果被传到BSC；如果BTS中没有经过预处理过程，测量报告直接被传到BSC，而不需要BTS的参与。

4.50 拆链

由MS发出拆链请求消息。消息内容主要包括：清除终端到终端的连接。这条消息将停止了有关此次呼叫连接的收费。

LAYER 3 UPLINK Time: 10:17:55.940 DISCONNECT 3GPP TS 24.008 ver 5.6.0 Rel 5 (9.3.7.2) M Protocol Discriminator (hex data: 3) (0x3) Call control (call related SS message) M Transaction Identifier (hex data: 0) TI flag: 0 (the message is sent from the side that originates the TI) TI value: 0 M Message Type (hex data: e5) Message number: 229 M Cause (hex data: 02e090) Coding: Standard defined for the GSM Location: user Cause (16): Normal call clearing Layer 3 data: 03 e5 02 e0 90

4.51 拆链

拆链消息发往MSC。

4.52 释放

实际的释放将来自MSC，真正的呼叫才结束。

4.53 释放

释放消息送往MS。

LAYER 3 DOWNLINK Time: 10:17:55.944 RELEASE 3GPP TS 24.008 ver 5.6.0 Rel 5 (9.3.18.1) M Protocol Discriminator (hex data: 3) (0x3) Call control (call related SS message) M Transaction Identifier (hex data: 8) TI flag: 1 (the message is sent to the side that originates the TI) TI value: 0 M Message Type (hex data: 2d) Message number: 45 Layer 3 data: 83 2d

4.54 释放完成

MS通知网络它将释放此次业务标识，也就表示释放过程正在进行中。

LAYER 3 UPLINK Time: 10:17:55.944 RELEASE COMPLETE 3GPP TS 24.008 ver 5.6.0 Rel 5 (9.3.19.2) M Protocol Discriminator (hex data: 3) (0x3) Call control (call related SS message) M Transaction Identifier (hex data: 0) TI flag: 0 (the message is sent from the side that originates the TI) TI value: 0 M Message Type (hex data: 2a) Message number: 42 Layer 3 data: 03 2a

4.55 释放完成

释放完成消息被发送到MSC。

4.56 清除命令

这个消息由MSC发出，用来释放所有相关的资源，也就是与这次通话过程相关的BSSAP。

4.57 信道释放

使正在使用的TCH停止活动。这个消息是由BSC发向MS的。另外，它也被称为“第三层 的断链消息”。在正常的呼叫建立情况下，呼叫原因为“正常”。

LAYER 3 DOWNLINK Time: 10:17:56.080 CHANNEL RELEASE 3GPP TS 04.18 ver 8.13.0 Rel 1999 (9.1.7) M Protocol Discriminator (hex data: 6) (0x6) Radio resource management message M Skip Indicator (hex data: 0) Value: 0 M Message Type (hex data: 0d) Message number: 13 M RR Cause (hex data: 00) RR Cause value (0): Normal event Layer 3 data: 06 0d 00

4.58 去活SACCH（慢速随路控制信道）

BSC向下行发送这个消息，BSC禁止向MS发送系统消息。事实上，此时已经没有在SACCH上接收/ 发送任何消息的必要了，因此它将被去活。

4.59 DISC

MS在上行方向将发送第2层DISC帧，并通知BTS在TCH/FACCH信道上的业务。

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