寻呼与接入优化算法.pptVIP

寻呼及接入优化算法 TAC weixiang 目 录 手机开机初始化(SDA) MIN Hashing寻呼信道时隙 寻呼信道参数介绍 接入信道介绍——Probe 接入信道介绍——参数 关于接入时间的计算 有哪些信誉好的足球投注网站窗 —— 呼叫接入部分 手机开机初始化(SDA:系统判定算法 ) 手机Idle状态下的选择 寻呼信道消息 MIN Hashing寻呼信道时隙 寻呼信道参数介绍 Data Rate: 9600bps/4800bps Max_Slot_Cycle_Index: 1 Config_Message_Sequence Access_Message_Sequence 接入呼叫处理 接入信道介绍——Probe What is Access ? The procedure mobile station sends messages through access channel. Access Attempt The total procedure from sending messages to Base station through access channel to receiving the response. Access Probe Each transmission in the access attempt. Access Probe Sequence Access probes are grouped into access probe sequences. 接入信道介绍——Probe Response Attempt -. One that is a response to a BS msg. Request Attempt -. One that is sent autonomously by the Personal Station RS -. Sequence Backoff Delay -. Random (0 ~ 1+BKOFF) PD -. Persistence Delay MAX_RSP_SEQ -. Maximum number of access probe sequences for an access channel response MAX_REQ_SEQ -. Maximum number of access probe sequences for an access channel request 接入信道介绍——Probe TA Acknowledgement Response Timeout TA = 80 * (2 +ACC_TMO) RT Probe Backoff Random ( 0 ~ 1+PROBE_BKOFF) IP Initil Open Loop Power IP = - mean input power (dBm) -76+ NOM_PWR - 16*NOM_PWR_EXT+ INIT_PWR PI Power Increment PI = PWR_STEP 接入信道介绍——参数 接入信道介绍——参数 关于接入时间的计算 关于接入时间的计算 关于接入时间的计算 整体probe max接入时间计算: 关于接入时间的计算-典型接入时长 MS 有哪些信誉好的足球投注网站窗 —— 呼叫接入部分 Preamble_win_length Objectives improving the Access Reliability and Time Reduce many Probe Access 有哪些信誉好的足球投注网站窗 —— 呼叫接入部分 Preamble_win_length -. Preamble search window length -. Range : 0 ~ 12288 (1/8 PN chip / unit), 12288=1536chip, Default value : 256chip -. Condition : preamble_win_length + preamble_pn_offset 12288 preamble_pn_offset : preamble search starting point. -. When system is operating in 2G mode, the maximum limit of PWL is 1024 PN chip. Even if PWL is set to 1536 chip in 2G mode,