Distributed and centralized scheduling for relaying systems under interference limited conditions

After relaying technology is introduced into the cellular system, many research fields emerge. Among them, resource allocation strategy for distributed and centralized scheduling is an important topic. This paper analyzes and compares the differences between these two scheduling modes in relaying systems under interference limited conditions, especially the advantages and disadvantages of centralized scheduling. We point out that interferer indetermination problem is a challenge to employ centralized scheduling. Several efficient scheduling schemes are proposed to reveal their characteristics. System simulation results and our analysis show that these two scheduling modes each have their strong points.

[1]  Sudhir Dixit,et al.  Wireless relays for broadband access [radio communications series] , 2008, IEEE Communications Magazine.

[2]  Halim Yanikomeroglu,et al.  Relayer selection strategies in cellular networks with peer-to-peer relaying , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[3]  Jiunn-Tsair Chen,et al.  A Novel Distributed Scheduling Algorithm for Downlink Relay Networks , 2007, IEEE Trans. Wirel. Commun..

[4]  Reza Hoshyar,et al.  Integrated Radio Resource Allocation for Multihop Cellular Networks With Fixed Relay Stations , 2006, IEEE Journal on Selected Areas in Communications.

[5]  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).

[6]  Halim Yanikomeroglu,et al.  Range extension without capacity penalty in cellular networks with digital fixed relays , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..