Opportunistic Mobile Relaying Scheme in  Two-hop Cellular Networks

손규호; Seungho Song; 이향원; Joohyun Lee; Song Chong

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자료유형: 학술저널

저자정보: 손규호 Seungho Song 이향원 Joohyun Lee Song Chong

저널정보: SK텔레콤 Telecommunications Review Telecommunications Review 제20권 제3호

발행연도: 2010.1

수록면: 429 - 444 (16page)

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Since the capacity and fairness usually have a trade-off relationship, increasing the capacity may deteriorate the fairness, and vice versa. This paper investigates the possibility to improve the capacity and fairness at the same time in two-hop cellular networks. First, we show that an achievable average throughput region can be enlarged by using cooperative relaying. In order to achieve a certain point in this enlarged throughput region, an appropriate scheduling algorithm is necessary. Thus, secondly we propose a generalized scheduling algorithm for cooperative relaying. At the expense of cooperation among users, the proposed scheduling algorithm can improve both capacity and fairness. Furthermore, we propose a limited feedback mechanism to reduce the total amount of feedback. Extensive simulations demonstrate that opportunistic mobile relaying can surpass the trade-off relationship and can alleviate the unfairness problem among users in the heterogeneous channel condition as well.

#Cooperative diversity #Cellular network #Scheduling #Capacity region #Fairness

참고문헌 (11)

참고문헌 신청

A. Jalali / 2000 / Data throughput of cdma-hdr a high efficiency-high data rate personal communication wireless system / in Proc. IEEE VTC Spring 2000

H. J. Kushner / 2004 / Convergence of proportional-fair sharing algorithms under general conditions / IEEE Trans. Wireless Commun 3 (4) : 1250 ~ 1259

J. Cho / 2004 / 'On the Throughput Enhancement of the Downstream Channel in Cellular Radio Networks Through Multihop Relaying / IEEE J. Select. Areas Commun 22 (7) : 1206 ~ 1

J. Mo / 2000 / Fair end-to-end window-based congestion control / IEEE/ACM Trans. Networking 8 (5) : 556 ~ 567

J. N. Laneman / 2004 / Cooperative diversity in wireless networks: efficient protocols and outage behavior / IEEE Trans. Inform. Theory 50 (12) : 3062 ~ 3080

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