상세정보
학술대회
Dynamic Priority Scheduling for Heterogeneous Cognitive Radio Networks
- 발행일
- 201206
- 출처
- IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON) 2012, pp.62-64
- 협약과제
- 12PR3900, 10GHz 이하 대역에서 Dynamic Spectrum Access를 위한 상호 공존성(Coexistence) 기준 연구, 정병장
- 초록
- In cognitive radio networks (CRNs), secondary networks (SNs) are regulated in order to prevent them from accessing a channel if primary networks (PNs) are currently occupying the channel. However, there not exists any regulation how to coordinate the channel access among multiple heterogeneous SNs. In this paper, we consider a centralized approach to explicitly coordinate the channel accesses among SNs coexisting in the same CRN; these SNs can exchange channel information through a coexistence manager (CM). We propose a channel access scheduling scheme that differentiates the quality-of-service (QoS) by assigning priority values and provides a certain level of fairness by taking the queue waiting time into consideration. Through various simulations, we show that the proposed scheme achieves the QoS differentiation among contending SNs while improving both the throughput and fairness performance in CRNs. © 2012 IEEE.
- KSP 제안 키워드
- Centralized approach, Channel Access(CA), Dynamic Priority, Heterogeneous Cognitive Radio Network, Priority scheduling, QoS differentiation, Scheduling Scheme, cognitive radio(CR), cognitive radio network(CRN), quality of service(QoS), queue waiting time