HeNB – Home evolved Node B
The HeNB has almost identical functionality as an eNB within the E-UTRAN, but is designed to be deployed in a home/office location as part of a Femto Cell architecture. Like the eNB, the HeNB is responsible for all radio resource management, as well as allocation of user traffic to the downlink/uplink, security and relaying of higher layer NAS (Non Access Stratum) signalling to the MME (Mobility Management Entity). The HeNB backhauls traffic to the network via the S1 interface, appearing to the upstream network as a regular eNB. The upstream network may be an MME (Mobility Management Entity)/S-GW (Serving Gateway) or a HeNB-GW (HeNB Gateway).
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