Local and global handovers for mobility management in wireless ATM networks

Handovers in wireless ATM networks: in-band signaling protocols and performance analysis

“…For instance, in Global System for Mobile-communications (GSM)-like and Code-Division Multiple Access (CDMA)-based cellular networks handover procedures are fairly different. The network architecture considered here implies a complete integration of MTs within the ATM network and was described in detail in [23]. Notice that, on the one hand, the network model is purposely not very detailed to abstract the procedures from any implementation or unnecessary detail; on the other hand, the procedures were implemented in a cell level, detailed ATM network simulator (see Section V) ensuring that they work properly in an ATM network.…”

“…As discussed in [23], two handover types can be envisaged, involving a different number of network entities: in the first case, both the source BSC (BSC ) and the destination BSC (BSC ) are connected to the same EMAS-E, originating local 3 handovers; in the second case, the two BSCs (BSC and BSC ) are connected to different EMAS-Es, originating global 4 handovers. The latter constitute a crucial point toward the objective of an integrated mobile network, where the user can freely roam through the network, moving from one subnet and operator to another.…”

“…This paper presents a comprehensive work aimed at defining possible solutions and a general analysis method for network-level handover protocols in integrated networks. Within this framework, some detailed protocols for the control of handover procedures performed by using in-band signaling are presented and analyzed, extending and completing the ideas proposed in [23]- [25]. Also, results for concurrent handovers at the same access point are derived.…”

“…Also, results for concurrent handovers at the same access point are derived. In [23], the idea of in-band signaling for handover management was first sketched for a simple handover scheme similar to those of second generation cellular networks. The work in [24] presented a detailed simulation analysis of buffer requirements for a single handover procedure with variable network parameters for the same handover scheme considered in [23].…”

“…In [23], the idea of in-band signaling for handover management was first sketched for a simple handover scheme similar to those of second generation cellular networks. The work in [24] presented a detailed simulation analysis of buffer requirements for a single handover procedure with variable network parameters for the same handover scheme considered in [23]. In [25], the need for different network handover schemes in a mobile, integrated network and an early version of the handover classification adopted here, were illustrated.…”