A Paging Indicator Transmission Technique for Mobile WiMAX Systems

Kim, Yeong-Jun; Yoo, Hyun-Il; Woo, Kyung-Soo; Lee, Jung-Ryun; Lee, Heesoo; Cho, Yong Soo

doi:10.1587/transcom.e92.b.2542

Cited by 1 publication

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“…WiMAX mobile devices are known to have severe communication qualities due to signal degradation in cell boundaries and shaded areas [1]. To solve this problem, various researches attempt to increase signal sensitivity in those areas [1] [2]. For instance, vehicles can be equipped with WiMAX antenna on the roof or glass of the vehicle so that the mobile devices can increase receiver signal sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Mobility-Aware Interference Avoidance Scheme for Vehicular WLANs

Park¹

2011

KSII TIIS

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Communication technology of future networks is predicted to provide a large variety of services including WiFi service in vehicular network. In this paper, we assume that vehicles are embedded with WiMAX antenna and in-vehicle terminals receive WiMAX traffic through WiFi interface. This assumption will impose severe performance degradation due to interference among mobile BSSs when WiFi access points (APs) are densely located. Existing interference avoidance techniques cannot properly resolve the above problems and do not cope with dynamically moving vehicular scenario since they focus only on the fixed network topology. In this paper, we propose a mobility-aware interference avoidance scheme for WiFi services. The proposed scheme computes the interference duration by exploiting mobility vector and location information of neighboring APs. If the interference duration is not negligible, our scheme searches for another channel in order to avoid interference. However, if the interference duration is negligible, our scheme continues to use the channel to reduce switching overhead. To measure the effectiveness of the proposed scheme against other existing techniques, we evaluated performance by using OPNET simulator. Through the simulation, we obtained about 60% reduction in the maximum interference frequency and about 67% improvement in throughput. Furthermore, our scheme provides fair channel usage.

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Section: Introductionmentioning

confidence: 99%

Mobility-Aware Interference Avoidance Scheme for Vehicular WLANs

Park¹

2011

KSII TIIS

View full text Add to dashboard Cite

show abstract

A Paging Indicator Transmission Technique for Mobile WiMAX Systems

Cited by 1 publication

References 5 publications

Mobility-Aware Interference Avoidance Scheme for Vehicular WLANs

Mobility-Aware Interference Avoidance Scheme for Vehicular WLANs

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