Class-Based Shared Resource Allocation for Cell-Edge Users in OFDMA Networks

Abstract

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.

Dynamic bandwidth allocation in mobile social networks with multiple homing access

“…Lai et al [16] proposed a dynamic bandwidth allocation scheme for cognitive femtocell networks, which exploits game theoretic regret matching procedure to enhance the spectrum efficiency. Singhal et al [18] presented a class-based shared bandwidth allocation scheme for cell-edge active users to improve system capacity. Yoon et al [19] employed a bandwidth allocation scheme to design a worst-case execution times model for solving the problem of unpredictable worst-case timing behavior.…”

“…According to (18), since the amount of required bandwidth is greater than zero, we only need to consider the first case, where the optimal strategy in (28) is a Nash equilibrium and the condition in (27) can be satisfied. To achieve the Nash equilibrium in bandwidth competition game among mobile social users, each mobile social user can adjust strategies to increase his utility by updating the bandwidth demand as , , ,…”

Performance analysis of load balancing in OFDMA cellular networks with inter‐cell relay

“…In Wei, the authors proposed a sharing method, in which a cell identification (ID) collision is set and performed at a base station (BS) and a selection of a load rate is determined by comparison of heterogeneous network nodes for inter‐cell handover. And in other works, these authors propose some load balancing schemes based on wireless resource and power allocation management. For example, the authors in Farazmand and Alfa proposed a game‐based power allocation scheme that can improve the average sum‐spectral efficiency.…”

“…But it did not consider the interference of multi‐cell network system. In Singhal et al, a resource allocation scheme for active users of cell edge is proposed, which makes full use of the two‐dimensional elastic resource allocation of OFDMA network. Basing on the shared resource architecture and protocol, it can make the mobile station in the edge area stay connected with the BS.…”

A Frequency Allocation Scheme with Controllable Fairness in FFR Aided OFDMA Networks

“…Optimization schemes of allocation in heterogeneous networks are studied by [4]. To enhance celledge MSs' Quality of service (QoS) and increase system throughput, [5] and [6] give their solution, respectively. Cooperation among base stations (BSs) is discussed in [7].…”