GSM无线参数的研究

GSMpa.doc : GSM无线参数的研究
前言······························································································································· 4
GSM无线系统简介···································································································· 5
一．无线接口························································································································································· 5
二．信道及帧结构················································································································································ 6
三．无线信道组合及映射·································································································································· 7
无线参数调整·············································································································· 9
一. 网络识别参数···································································································· 10
1．小区全球识别················································································································································ 10
2．基站识别码（BSIC）································································································································· 12
二. 系统控制参数···································································································· 15
1．IMSI结合分离允许（Attach-Detach allowed，ATT）······································································· 15
2．公共控制信道配置（CCCH-CONF）···································································································· 16
3．接入准许保留模块（BS_AG_BLKS_RES）······················································································· 17
4．寻呼信道复帧数(BS_PA_MFRMS)········································································································· 18
5．寻呼模式设置（PM）································································································································ 19
6．周期性位置更新定时器（T3212）········································································································ 20
7．小区信道描述(Cell Channal Description)······························································································· 22
8．无线链路超时（Radio_Link_Timeout）································································································ 23
9．邻小区描述（Neighbour Cells Description）······················································································· 24
10．允许的网络色码(NCC Permitted)·········································································································· 26
11．最大重发次数(MAX retrans)··················································································································· 27
12．发送分布时隙数（Tx_integer）··········································································································· 28
13．小区禁止接入（CELL_BAR_ACCESS）··························································································· 29
14．接入的等级控制（AC）························································································································· 30
15．等待指示（Wait Indication）·················································································································· 31
16．多频段指示（Multiband_Reporting）·································································································· 32
17．BCCH 频率分配范围（Ranger NR_LOWER,Ranger NR_HIGHER）······································· 33
三. 小区选择及重选参数······················································································· 35
1．小区选择：···················································································································································· 35
▲. C1算法···························································································································································· 35
1.1 控制信道最大功率电平（MS_TXPWR_MAX_CCH）··································································· 37
1.2 移动台允许接入的最小接收电平（RXLEV_ACCESS_MIN）····················································· 38
1.3 功率偏置（POWER OFFSET）·············································································································· 39
2. 小区重选：······················································································································································ 40
▲. C2算法···························································································································································· 40
2.1 小区重选偏置（CELL_RESELECT_OFFSET）················································································· 41
2.2 临时偏置（TEMPORARY_OFFSET）·································································································· 41
2.3 惩罚时间（PENALTY_TIME）················································································································ 42
2.4 小区重选滞后（Cell Selection Hysteresisz）····················································································· 43
2.5 附加重选参数指示（ACS）：················································································································· 44
2.6 小区重选参数指示（PI）························································································································ 44
2.7 小区禁止限制（Cell Bar Qualify，CBQ）························································································· 45
四. 网络功能参数···································································································· 46
1. 功率控制指示（PWRC）··························································································································· 46
2. 非连续发送（DTX）：································································································································· 47
3. 新建原因指示（NECI）：···························································································································· 48
4. 呼叫重建允许（RE）·································································································································· 49
5. 紧急呼叫允许（EC）·································································································································· 49
6. 跳频参数1-跳频应用(H)····························································································································· 50
7. 跳频参数2-移动分配索引偏置(MAIO)·································································································· 51
8. 跳频参数3-跳频序列号（HSN）············································································································ 52
9. 加密设置（SC）··········································································································································· 52
10. 加密算法设置（algorithm identifier）································································································· 53
五. 小区切换参数···································································································· 55
1. Hreqave和Hreqt··············································································································································· 55
2. 门限参数：······················································································································································ 56
2.1 接收电平门限（L_RXLEV_xx_H）······································································································· 56
2.2 接收质量门限（L_RXQUAL_xx_H）··································································································· 56
2.3 接收质量门限（小区内）（L_RXQUAL_xx_IH）············································································· 57
2.4 MAX_MS_RANGE········································································································································· 57
2.4 HO_MARGIN·················································································································································· 57
六. 系统定时器和计数器······················································································· 59
1. 无线资源管理的定时器和计数器············································································································ 59
1.1 MS侧的定时器············································································································································· 59
1.2 网络侧的定时器·········································································································································· 61
2. 移动性管理的定时器··································································································································· 64
2.1 MS侧的定时器············································································································································· 64
2.2 网络侧的定时器·········································································································································· 65
小结························································································································ 66
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