When the ue is connected, send a short message to the mobile phone. What ue characteristics are included in the data sent by the base station?

When the phone is turned on, it will search the carrier frequency of the broadcast control channel (BCCH). Because the system sends user broadcast control information to users in the cell at any time. The mobile phone collects and searches for the strongest (BCCH) carrier frequency. After the corresponding carrier frequency, the frequency correction channel (FCCH) is read to synchronize the frequency (MS) of the mobile phone. Therefore, the carrier frequency of each user's mobile phone in different locations (different cells) is fixed, which is determined by the GSM network operator when networking, not by the user's GSM mobile phone. Mobile phone reading synchronization channel MSCBSC mobile communication forum! f！ A: \! Z6V3k)L(SCH), find out any code of the base station (BTS) and synchronize it to the post number of the ultra-high post TDMA. The mobile phone reads the information of the system before processing the call. For example, the situation of neighboring cells, the usage frequency of the current cell, and whether the cell can use the country number and network number of the mobile system. All these information can be obtained on BCCH, such as the home of communication engineers, communication talents, job recruitment, network optimization, communication engineering, business travel accommodation and blacklist of communication enterprises. . o）{！ L The mobile phone sends access request information on an access request channel (RACH) and sends information such as SIM card account number to the system. After passing the authentication, the system enables GSM mobile phone to access the channel through AGCH and assign it to an independent dedicated control channel (SDCCH). The mobile phone has been registered on SDDCCH. A control command is sent on the full-speed correlated control channel (SACCH), and then the mobile phone returns to the idle state and monitors the information on the common control channel of the BCCH and CCCH. At this point, the mobile phone is ready for paging.