Title :
Utility-based mechanism for broadcast recipient maximization in WiMAX relay networks
Author :
Lin, Cheng-Hsien ; Lee, Jeng-Farn ; Wan, Jia-Hui
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan
Abstract :
This paper studies the resource allocation problem in downlink broadcast services in the IEEE 802.16j WiMAX relay networks, where the objective to serve as many Mobile Stations (MSs) as possible with the given resource budget. Solving the problem is not trivial because allocating different amounts of the resource to the Multihop Relay Base Station (MR-BS) and Relay Stations (RSs) yields different network topologies and thus diverse routing paths from the MR-BS to the MSs. Since existing approaches only provide inflexible solution (i.e., in each step of the allocation process, the fraction of resource released by the MR-BS is reassigned to the selected RS entirely) or the solution that is built on a limited network scenario (i.e., the routing paths from the MR-BS to MSs is predetermined), we propose a Utility-based Resource Allocation (URA) algorithm to settle the problem. In particular, we define the utility of a relay path, which is used by URA to assess the quality of a relay path. The performance evaluation via simulations under different network scenarios and resource budget shows that URA can make utilization more efficient so that it can serve more MSs than existing approach.
Keywords :
WiMax; broadcast communication; mobile radio; optimisation; radio stations; relay networks (telecommunication); resource allocation; telecommunication network reliability; telecommunication network routing; telecommunication services; IEEE 802.16j WiMAX relay network; MR-BS; MS; RS; URA algorithm; broadcast recipient maximization; downlink broadcast service; mobile station; multihop relay base station; network topology; relay path utilization; routing path; utility-based resource allocation algorithm; Downlink; IEEE 802.16 Standards; Real-time systems; Receivers; Relays; Resource management; WiMAX; Broadcast; Recipient Maximization; Resource Allocation; Utility; WiMAX Relay Networks;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4673-2566-0
Electronic_ISBN :
2166-9570
DOI :
10.1109/PIMRC.2012.6362909