基于傳輸塊調(diào)度的WCDMA上行負荷控制算法
Transport Block Based Scheduling Algorithm for WCDMA Uplink Load Control
-
摘要: 在WCDMA系統(tǒng)中,小區(qū)的無線資源管理通常是在無線網(wǎng)絡(luò)控制器(RNC)節(jié)點內(nèi)完成.然而,專用傳輸信道上傳輸格式可以逐幀改變,基于傳輸格式的快速變化實際上構(gòu)成一種無線資源控制能力。這種控制能力是由UE和Node B的MAC實體以及物理層協(xié)同完成的,完全不需要三層信令參與。該文根據(jù)WCDMA專用傳輸信道傳輸格式的快速變化能力,結(jié)合基于類的QoS策略,針對上行信道提出一種負荷控制算法,用以支持全分組業(yè)務(wù)。研究結(jié)果表明,在多業(yè)務(wù)環(huán)境下,各個用戶能公平共享無線資源、同時能夠?qū)崿F(xiàn)實時業(yè)務(wù)時延保證。
-
關(guān)鍵詞:
- WCDMA; 無線資源管理; 傳輸格式; 分組調(diào)度; 負荷控制
Abstract: In WCDMA system, the radio resource management entity is usually imple mented in the radio network controller. However, transport format in dedicated channels can be changed frame by frame. This fast format change can be seen as a fast part of the ra dio resource control, which is fulfilled by MAC and physical layer in user equipment and node B without any need for L3 signaling. Based on this capability and class-based QoS policy, this paper proposed an algorithm for WCDMA uplink load control. The algorithm consists of iterative rate control and packet scheduling. Simulation results show that the proposed algorithm can achieve fair sharing radio resource and guarantee QoS under multi-service environments. -
Harri Holma, Antti Toskala. WCDMA for UMTS: Radio Access for Third Generation Mobile Communications. Chichester, England, John Wiley Sons, Ltd. 2000: 153-282.[2]Kim D I, Hossain E, Bhargava V K. Integrated rate and error control in variable spreading gain WCDMA system. Proc. of IEEE ICC2001, Helsinki, Finland, 2001: 1362-1366.[3]Vannithamby R, Sousa E. Performance of multi-rate data traffic using variable spreading gain in the reverse link under wideband CDMA. Proc. of IEEE VTC2000-Spring, Tokyo, Japan, 2000:1155-1159.[4]Gyung-Ho Hwang, Dong-Ho Cho. Distributed rate control for throughput maximization and QoS support in WCDMA system. Proc. of IEEE VTC2001-Fall, Atlantic City, NJ, USA, 2001:1721-1725.[5]Yile Guo, Hemant Chaskar. Class-based quality of service over air interfaces in 4G mobile networks. IEEE Communications Magazine, 2002, 40(3): 132-137.[6]3GPP TS 25.302 V4.2.0(2001-09), Services provided by the physical layer.[7]3GPP TS 25.212 V4.2.0(2001-09), Multiplexing and channel coding (FDD). ［8］3GPP TR 25.944 V4.1.0(2001-06), Channel coding and multiplexing examples.[8]IETF RFC2212, Specification of Guaranteed Quality of Service.[9]3GPP TS 25.104 V4.2.0 (2001-09), UTRA (BS) FDD radio transmission and reception.[10]3GPP TS 25.322 V4.2.0 (2001-09), RLC protocol specification.[11]3GPP TS 25.321 V4.2.0 (2001-09), MAC protocol specification. -
計量
- 文章訪問數(shù): 2369
- HTML全文瀏覽量: 135
- PDF下載量: 661
- 被引次數(shù): 0
下載:
