Optimal Relay Selection in IEEE 802.16j Multihop Relay Vehicular Networks

Author

Ge, Yu ; Wen, Su ; Ang, Yew-Hock ; Liang, Ying-Chang

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

59

Issue

5

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

2198

Lastpage

2206

Abstract

This paper examines the IEEE 802.16j multihop relay (MR) technology that improves vehicle-to-infrastructure communications. We study the selection of optimal relay station (RS) for a vehicular subscriber station (SS) that maximizes the end-to-end capacity, assuming that the locations of vehicular SSs are known. By incorporating a highway mobility model, the problem can be formulated into a nonlinear optimization problem and solved for the optimal locations of RSs that guarantee maximal end-to-end capacities to SSs. Numerical results from a case study show that the selection of the corresponding optimal RS increases the expected end-to-end capacity for individual SSs by 50%, as compared with the method without using relays.

Keywords

IEEE standards; WiMax; mobile radio; nonlinear programming; IEEE 802.16j multihop relay vehicular networks; end-to-end capacity; highway mobility model; nonlinear optimization problem; optimal relay selection; optimal relay station selection; vehicle-to-infrastructure communications; vehicular subscriber station; Capacity; IEEE 802.16j; highway mobility; multihop relay (MR); vehicular communications;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2010.2044822

Filename

5424081