A new queue-status resource allocation scheme for backhaul link in relay enhanced networks

Recently, distributed resource allocation for relay enhanced cellular networks has gained increasing attention. However, it poses a new challenge for the backhaul link scheduling. In this paper, we propose a queue-status-based resource allocation scheme for the backhaul link in a distributed manner in relay enhanced networks. By applying this scheme, the evolved Node B (eNB) adjusts the data rate for each user equipment (UE) in the backhaul link according to its queue status at the relay node (RN). It can guarantee the rate match between the backhaul and access links while minimizing feedback signaling. Simulation results show that the proposed scheme can achieve a good tradeoff between the spectral efficiency and the signaling overhead.

[1]  A. Goldsmith,et al.  Variable-rate variable-power MQAM for fading channels , 1996, Proceedings of Vehicular Technology Conference - VTC.

[2]  Wenbo Wang,et al.  Multihop cellular networks toward LTE-advanced , 2009, IEEE Vehicular Technology Magazine.

[3]  Hongyi Wu,et al.  A Queue-Aware Scheduling Algorithm for Multihop Relay Wireless Cellular Networks , 2009, 2009 IEEE Mobile WiMAX Symposium.

[4]  Harish Viswanathan,et al.  Performance of cellular networks with relays and centralized scheduling , 2005, IEEE Transactions on Wireless Communications.

[5]  Petar Popovski,et al.  Throughput-Guaranteed Resource-Allocation Algorithms for Relay-Aided Cellular OFDMA System , 2009, IEEE Transactions on Vehicular Technology.

[6]  Jun Cai,et al.  Flow-level performance of opportunistic OFDM-TDMA and OFDMA networks , 2008, IEEE Transactions on Wireless Communications.

[7]  Harish Viswanathan,et al.  Performance of cellular networks with relays and centralized scheduling , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[8]  Halim Yanikomeroglu,et al.  A Fair Radio Resource Allocation Scheme for Ubiquitous High-Data-Rate Coverage in OFDMA-Based Cellular Relay Networks , 2009, GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference.