標題: Two-stage dynamic uplink channel and slot assignment for GPRS
作者: Hsu, YC
Lin, YD
Chiang, MY
資訊工程學系
Department of Computer Science
關鍵字: GPRS;channel assignment;slot assignment;scheduling
公開日期: 1-九月-2003
摘要: General packet radio service (GPRS) uses a two-stage mechanism to allocate uplink radio resource to mobile stations (MSs). In stage-1, the base station (BS) assigns several packet data channels (PDCHs) to an MS. Furthermore, a PDCH may be assigned to multiple MSs. In stage-2, therefore, the BS selects one of the multiplexed MSs in a PDCH to use the radio resource. In this paper, maintaining a load balance between PDCHs in stage-1 is examined and several selection schemes to lower the mis-selection rate in stage-2 are proposed. From our simulation results, the cost deduced from the poor load balancing and selection schemes render a lower system throughput and a non-negligible increase in packet queuing delay. Among the various stage-2 selection policies, round robin with linearly-accumulated adjustment (RRLAA) has the lowest mis-selection rate and outperforms the one without any heuristic by up to 50%.
URI: http://hdl.handle.net/11536/27595
ISSN: 0916-8516
期刊: IEICE TRANSACTIONS ON COMMUNICATIONS
Volume: E86B
Issue: 9
起始頁: 2694
結束頁: 2700
顯示於類別:期刊論文