Effect of introducing predictive CIR on throughput performance in HSDPA networks

Yan Zhang, Masato Uchida, Masato Tsuru, Yuji Oie

研究成果: Conference contribution

抄録

Predicting wireless environment parameters as correctly and timely as possible is of practical importance to optimal resource allocation in wireless systems. For example, as the realtime wireless condition information is not available in reality due to delay, the latest historic wireless environment parameters are used to determine the users' instantaneous transmission rate in most of the existing systems in high-speed downlink packet access (HSDPA) networks. However, the wireless condition variation during this delay (e.g., 6ms) sometimes results in unsuitable determination of the instantaneous transmission rate and eventually influences the user and system performance. It is shown by simulation results that compared with using the ideal realtime wireless environment information, using the latest available historic information will introduce about 10%-15% throughput performance damage averagely. Therefore, in this paper, in order to mitigate such performance degradation, a simple linear prediction of the current wireless environment parameters is introduced. Simulation results demonstrate that nearly 10% improvement can be achieved under several well-known scheduling algorithms in a HSDPA network when the predictive environment parameter is applied to determine the instantaneous transmission rate.

本文言語English
ホスト出版物のタイトル2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
DOI
出版ステータスPublished - 2006 12 1
外部発表はい
イベント2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC - Helsinki, Finland
継続期間: 2006 9 112006 9 14

出版物シリーズ

名前IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Conference

Conference2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
CountryFinland
CityHelsinki
Period06/9/1106/9/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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