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There is a problem of unfairness in allocation of radio resources among heterogeneous mobile terminals in heterogeneous wireless networks. Low-capability mobile terminals (such as single-mode terminals) suffer high call blocking probability whereas high-capability mobile terminals (such as quad-mode terminals) experience very low call blocking probability, in the same heterogeneous wireless network...
Next generation wireless networks will interwork hence combine resources of the available heterogeneous networks for connection support. Mobility across these networks will be inevitable. Thus, to support seamless connection migration between the networks, seamless handover is a necessary requirement. One of the requirements for ensuring seamless handover is the reduction of the delay that occurs...
This paper investigate the effect of using heterogeneous mobile terminals (e.g. single-mode, dual-mode, triple-mode, etc.) on call blocking and call dropping probabilities in next generation wireless networks (NGWN). We develop an analytical model for heterogeneous mobile terminals in NGWN. Using a two-class three-RAT heterogeneous wireless network as an example, the effect of using heterogeneous...
Next generation wireless networks (NGWN) will be heterogeneous, comprising a number of radio access technologies (RATs) coexisting in the same geographical area. In NGWN, a joint call admission control (JCAC) algorithm is needed to select the most appropriate RAT for each incoming call. The JCAC algorithm must be user-centric (i.e., consider user preferences in making RAT selection decisions) in order...
Next generation wireless network (NGWN) will be heterogeneous where different radio access technologies (RATs) coexist. In NGWN, efficient radio resource management and QoS provisioning are major challenges. We propose an optimal joint radio resource management algorithm to minimize call blocking probability in NGWN. The algorithm makes call admission decisions such that overall call blocking probability...
Next generation wireless networks will be heterogeneous where different radio access technologies (RATs) coexist. This coexistence of different RATs necessitates joint radio resource management. This paper proposes a joint call admission control (JCAC) algorithm for heterogeneous cellular networks and develop an analytical model for the JCAC. The cellular networks are integrated together and radio...
We propose a dynamic joint call admission control scheme for heterogeneous cellular networks. The objectives of the JCAC scheme are to uniformly distribute traffic load among available RATs, guarantee the QoS requirements of all accepted call, prioritize handoff calls over new calls, and keep handoff call dropping probability close to a target value. We develop a Markov chain model for the JCAC scheme...
Different radio access technologies (RATs) such as UMTS, WiMax, WLAN, etc, will coexist in next generation wireless networks (NGWN). This coexistence of RATs necessitates joint radio resource management (JRRM) for efficient radio resource utilization and improved users' satisfaction. Admitting a call into the most appropriate RAT based on many selection criteria is major challenge in NGWN. This paper...
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