Radio resource management in gsm pdf

It controls those mobiles roaming in its area. Location Area Identity. The authentication center AuC stores the keys required for checking whether a mobile subscriber is authorized to access the PLMN.

Authentication Keys Ki -Encryption data. A database that contains a list of all valid mobile equipment of the network. Forbid calls from unauthorised terminals non-standard terminals.. Technical Terms Used w.

MM Mobility Management. The total number of digit in IMSI shall not be more than 15 digit. Max length of LAC is 16 bits. From this moment on,the mobile subscriber is unreachable for incoming calls. Implicit IMSI detach. From that moment on ,the mobile subscriber is unreachable for incoming calls. Location updating procedure As the user moves about within and outside their home service area ,the home system must know the location of all active mobile station in real time in order to deliver incoming calls.

LU procedure is invoked when 1. MS moves from one LA to another or 2. When it determines that it has moved to a new LA ,it initiate the signaling sequence. The MS is sent an acknowledgement of successful location update. Mobile Call Origination. The GMSC route the call to the local exchange of called user. The LE alerts applies ringing the called terminal. Answer back ring back tone from the called terminal to LE 7.

Frequenc FDMA uses different frequency channels y to accomplish communication. The whole frequency spectrum available is divided into many individual channels for transmitting and receiving every channel can support the traffic for one subscriber or some control information.

Frequenc TDMA accomplishes the y communication in different timeslot. A carrier is divided into channels based on time.

Different signals occupy different timeslots in certain sequence , that is , many signals are transmitted on the same frequency in different time. Open navigation menu. Close suggestions Search Search. User Settings.

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