基于合作中继的OFDM蜂窝网络的QoS感知资源调度算法

黄晓燕; 毛玉明; 吴凡

doi:10.3724/SP.J.1146.2010.00055

基于合作中继的OFDM蜂窝网络的QoS感知资源调度算法

doi: 10.3724/SP.J.1146.2010.00055

基金项目:

国家自然科学基金(60802024)资助课题

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出版历程
- 收稿日期: 2010-01-19
- 修回日期: 2010-06-10
- 刊出日期: 2010-12-19

QoS-Aware Resource Allocation Algorithm for Cooperative Relay-based OFDM Cellular Networks

摘要

摘要: 针对基于中继的OFDM蜂窝网络，该文考虑具有不同QoS要求的混合业务场景，引入合作传输机制，提出了一种基于合作中继的QoS感知资源调度算法，解决了合作中继节点选取，子载波分配以及功率控制等问题。以最大化系统效用为目标，在考虑QoS业务的速率要求与基站功率约束的同时，针对中继结构引入了中继节点的功率约束。为降低计算复杂度，将原非线性组合优化问题分解为子载波分配与功率控制两个子问题。仿真结果表明，该文所提算法在能量节约、系统效用，吞吐量等性能方面都有显著优势。
- 无线通信 /
- 合作中继 /
- 子载波分配 /
- 功率控制 /
- 服务质量
Abstract: This paper propose a QoS-aware resource allocation algorithm for cooperative relay-based OFDM cellular network with mixed services of different QoS requirements. The proposed algorithm solves relay selection, subcarrier allocation and power control issues. The design of resource allocation is formulated as a non-linear combinatorial optimization problem, which aims at maximizing the system sum utility while considering the data rate requirements of QoS users and the transmit power constrains for the base station as well as each relay station. To reduce the computational complexity, the global optimization issue is decomposed into subcarrier allocation and power control sub-issues. Numerical results demonstrate that the proposed algorithm is able to improve significantly the network performance in terms of power saving, system utility and system throughput.
- Wireless communication /
- Cooperative relay /
- Subcarrier allocation /
- Power control /
- Quality-Of-Service (QoS)

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参考文献(1)

3GPP TS 36.300. E-UTRA and E-UTRAN: Overall Description, Stage 2(Release 8) [S]. Mar. 2008.[2]Genc V, Murphy S, and Yu Y, et al.. IEEE 802.16j relay- based wireless access networks: a nover view [J]. IEEE Wireless Communications, 2008, 15(5): 56-63.[3]Pischella M and Belfiore J-C. Power control in distributed cooperative OFDMA cellular networks [J].IEEE Transaction on Communications.2008, 7(5):1900-1906[4]Pan Siriwongpairat W, Sadek A K, and Liu K J R. Cooperative communications protocol for multiuser OFDM networks [J].IEEE Transaction on Communications.2008, 7(7):2430-2435[5]Pischella M and Belfiore J-C. Resource allocation for QoS-aware OFDMA using distributed network coordination [J].IEEE Transaction on Vehicular Technology.2009, 58(4):1766-1775[6]Kaneko M and Popovski P. Radio resource allocation algorithm for relay-aided cellular ofdma system [C]. IEEE ICC, Glasgow, 2007: 4831-4836.[7]Kim Byung-gook and Lee Jang-Won. Opportunistic power scheduling for OFDMA cellular networks with scheduling at relay stations [C]. IEEE WCNC, Budapest, 2009: 1-6.[8]Song Guo cong and Li Ye. Cross-layer optimization for OFDM wireless networks - Part Ⅱ: algorithm development [J].IEEE Transaction on Communications.2005, 4(2):625-634[9]Nicholas Laneman J. Cooperative diversity in wireless networks: algorithms and architectures [D]. [Ph.D. dissertation], Massachusetts Institute of Technology, 2002.[10]Zhang Yan, Chen Hsiao-hwa, and Guizani M. Cooperative Wireless Communications [M]. Boca Raton, Auerbach Publications, 2009: 92-94.[11]Huang Xiaoyan, Mao Yuming, and Wu Fan. Low complexity utility-based scheduling algorithm for heterogeneous services in OFDM wireless networks [C]. Proc. of ICCCAS 2009, San Jose, USA, 2009, Vol 1: 48-52.

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