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Issue No.01 - Jan. (2014 vol.13)
pp: 48-60
Chetna Singhal , Commun. Networks Res. Lab., Indian Inst. of Technol. Delhi, New Delhi, India
Satish Kumar , Qualcomm India Pvt. Ltd., Hyderabad, India
Swades De , Dept. of Electr. Eng., Indian Inst. of Technol. Delhi, New Delhi, India
Nitin Panwar , Cisco Syst. Pvt. Ltd., Bangalore, India
Ravindra Tonde , Samsung India Software Centre, Noida, India
Pradipta De , Dept. of Comput. Sci., State Univ. of New York (SUNY) Korea, Incheon, South Korea
ABSTRACT
In this paper, we present a new resource allocation scheme for cell-edge active users to achieve improved performance in terms of a higher system capacity and better quality-of-service (QoS) guarantee of the users, where we utilize the two-dimensional resource allocation flexibility of orthogonal frequency division multiple access (OFDMA) networks. Here, the mobile stations (MSs) at the cell-edge can maintain parallel connections with more than one base station (BS) when it is in their coverage area. A MS, before handoff to a new BS, seeks to utilize additional resources from the other BSs if the BS through which its current session is registered is not able to satisfy its requirements. The handoff procedure is termed as split handoff. The BSs participate in split handoff operation while guaranteeing that they are able to maintain QoS of the existing connections associated with them. In this study, first, we present the proposed shared resource allocation architecture and protocol functionalities in split handoff, and give a theoretical proof of concept of system capacity gain associated with the shared resource allocation approach. Then, we provide a differentiated QoS provisioning approach that accounts for the MS speed, its channel quality, as well as the loads at different BSs. Via extensive simulations in Qualnet, the benefits of the proposed class-based split handoff approach is demonstrated. The results also indicate traffic load balancing property of the proposed scheme in heavy traffic conditions.
INDEX TERMS
Quality of service, Resource management, OFDM, Mobile computing, Downlink, Mobile communication, Protocols,effective capacity, Quality of service, Resource management, OFDM, Mobile computing, Downlink, Mobile communication, Protocols, differentiated QoS, Split handoff, shared resource allocation
CITATION
Chetna Singhal, Satish Kumar, Swades De, Nitin Panwar, Ravindra Tonde, Pradipta De, "Class-Based Shared Resource Allocation for Cell-Edge Users in OFDMA Networks", IEEE Transactions on Mobile Computing, vol.13, no. 1, pp. 48-60, Jan. 2014, doi:10.1109/TMC.2012.210
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