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Dynamic scheduling framework on an RLC/MAC layer for general packet radio service

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3 Author(s)
Jen-Shun Yang ; Dept. of Comput. Sci. & Inf. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan ; Chien-Chao Tseng ; Ray-Guang Cheng

We present a traffic-scheduling framework that can dynamically allocate radio resources to a general packet radio service (GPRS) mobile station (MS) based on the interference levels of the radio links and the quality of service (QoS) specification of the MS. The underlying idea of this scheduling scheme is to preserve more bandwidth for use by those MSs that are within a low interference region so that the limited radio resources can be used more effectively. In this scheme, an MS uses a low transmission rate for data transfer when the MS is within a high interference region to avoid wasting bandwidth by transmitting data in a condition with high interference. In order to compensate for the service loss of the MS, we allocate more bandwidth to the MS when it is within a low interference region. In addition, we also propose an analytical model that can be used to derive the transmission rate for an MS in a low interference region based on the delay-bound requirement of the MS. The performance results show that our dynamic scheme can utilize the bandwidth more effectively to satisfy various QoS requirements of the MSs in the GPRS system without changing the convolution-coding rate.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:2 ,  Issue: 5 )

Date of Publication:

Sept. 2003

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