Optimal scheduling of handoffs in cellular networks
- 1 June 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE/ACM Transactions on Networking
- Vol. 4 (3) , 428-441
- https://doi.org/10.1109/90.502241
Abstract
In thw paper, the phenomenon of hard as well aa soft handoffs in cellular networka ia formulated aa stochastic optimization problems. The signals received by a mobde user are treated as stochastic processes with associated rewards, which are functions of some measurable characteristics of the received signals, w~lle the handoff is associated wi?h a switching penalty. This formulation capturea the trade-offs involved in handoffs in a flexible manner and captures many facets of poptdar cellular communication systems in use currently. Using dynamic pro- gramming, necessary and sutlicient conditions for determining the optimal base station(s) the mobile shotdd be associated with during each decbdon epoch are derived. For the cases where the above-mentioned necessary and sufficient conditions fail to determine an optimal decision, "limited Iookahead" arguments are used for determining handoff decisions. The decidons are taken in a decentralized manner, which makes ita implementation easier compamd to centratiied rdgorithms. Siitdation results show that for the hard handoffs, performance gain by the pro- posed algorithm over the simpler threshold rdgorithma proposed in the literature is smalt; however, for the case of soft handoff% the proposed algorithm offers considerable improvement over the algorithm proposed in the IS-95 standard.Keywords
This publication has 13 references indexed in Scilit:
- Effects of soft handoff, frequency reuse and non-ideal antenna sectorization on CDMA system capacityPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Traffic performance analysis for cellular communication systems with mixed platform types and queued hand-offsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Analysis of handover algorithms (microcellular radio)Published by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Optimal control of handoffs in wireless networksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Adaptive averaging methodology for handoffs in cellular systemsIEEE Transactions on Vehicular Technology, 1995
- Soft handoff extends CDMA cell coverage and increases reverse link capacityIEEE Journal on Selected Areas in Communications, 1994
- Network planning aspects of DS-CDMA with particular emphasis on soft handoffPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1993
- A model for analyzing handoff algorithms (cellular radio)IEEE Transactions on Vehicular Technology, 1993
- On the capacity of a cellular CDMA systemIEEE Transactions on Vehicular Technology, 1991
- Cellular packet communicationsIEEE Transactions on Communications, 1990