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In LTE, tracking Areas (TAs) are used to group cells where each cell is assigned to one TA and each user equipment (UE) registers with one TA. A TA may be connected to more than one mobility management entity (MME), which records the current TAs of its UEs. The home subscriber server (HSS) records the current MME for each UE. When a UE moves to a new TA, a TA update procedure is triggered to update...
In LTE networks, tracking areas (TAs) design affects the signaling cost of user equipments (UEs) during mobility. Indeed, when the latter are called, the mobility management entity (MME), which records the TA in which the UE is registered, broadcasts a paging message in the UE's TA to determine the exact cell through which the call should be delivered. When a UE moves to a new TA, a TA update might...
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