开启手机的diag模式

setprop sys.usb.config diag,adb
有些型号需要设置成
setprop diag,serial_cdev,rmnet,adb
不然diag模式不正常

将手机日志modem文件转换成pcap文件：使用QCAT打开isf文件，菜单选择Tools，Convert Log to PCAP/TXT

GMM== GPRS Mobility Management
MM== Mobility Management
EMM== EPS (Evolved Packet System) Mobility Management

在QXDM按F12,或者从菜单选择 View->Common->Filtered View

打开Filtered View之后， 打开右键菜单，选择Config
左侧Item Types选中 Log Packets (OTA), 右侧 选中我们关心的 UMTS, GSM, Lte, WCDMA类型

名称:LTE NAS EMM Plain OTA Outgoing Message 消息类型: Attach request Msg
Authentication request
Authentication response
ESM information request
ESM information response
Attach accept
Attach Complete
EMM information
PDN Connectivity request
Activate default EPS bearer context request
Activate default EPS bearer context accept
Attach request
Authentication request
Authentication response
Security mode command
Security mode complete
Attach reject
GSM_MOB_MANAGEMENT中的 MM/Location Updating Request， 方向 MS to Network
GSM_GMM_Message中的 GMM_Attach_request 方向 : MS to Network
GSM_MOB_Management中的Authentication Request 方向：Network to MS
GSM_GMM_Message中的GMM Authenticaiton and ciphering request
MM/Authentication response
MM/TMSI Reallocation Command
MM/TMSI reallocatin Complete
GMM/Authentication ANd Ciphering Response
MM/Identity Request
MM/Identity Response
GMM/Attach reject