Title :
Dynamic Uplink/Downlink Resource Allocation for TDD OFDMA Access Network
Author :
Kou, Mingyan ; Zhen, Yanxiang
Author_Institution :
Internet Res. & Dev. Center, Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
The next generation communications system intend to develop broadband wireless access networks, which support heteronymous uplink and downlink services with different quality of service (QoS) requirement. In this paper, we address when and how to allocate the resource for uplink and downlink in time division duplex (TDD) OFDMA wireless network. For typical cellular network and mesh-like network, due to variable ratio of uplink/downlink heteronymous services, we proposed resource allocation (RA) scheme with dynamic asymmetry uplink downlink ratio (DAUDR) based on basic-capacity-based admission control (BCBAC). The numerical result show that performance of our scheme outweigh the fix ratio RA in the overall resource utilization.
Keywords :
OFDM modulation; cellular radio; frequency division multiple access; quality of service; radio access networks; radio links; time division multiplexing; QoS; TDD OFDMA access network; basic-capacity-based admission control; broadband wireless access networks; cellular network; downlink resource allocation; dynamic asymmetry uplink downlink ratio; dynamic uplink resource allocation; heteronymous services; mesh-like network; next generation communications system; quality of service; time division duplex wireless network; Admission control; Bandwidth; Downlink; Land mobile radio cellular systems; Next generation networking; Quality of service; Resource management; Telecommunication traffic; Wireless mesh networks; Wireless networks; QoS asymmetry ratio; TDD OFDMA; base station (BS); resource allocation (RA);
Conference_Titel :
Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on
Conference_Location :
Yunnan
Print_ISBN :
978-0-7695-3501-2
DOI :
10.1109/CMC.2009.191
