Burst Stream Resource Reservation Algorithm of Satellite E-OBS Network Based on Preemption Window

Abstract

An onboard optical burst network resource reservation algorithm named PWBR is proposed for satellite optical switching network. The algorithm uses burst stream as reservation unit and is based on preemption window which can guarantee the QoS of HP burst; network delay performance and packet loss ration are improved through big granularity burst stream. Computer simulations show that the packet loss ratio of HP BDP is lowered 79%, the packet loss ratio of LP BDP is lowered 73% in E-OBS structure than C-OBS when network load is 0.7.and its end-to- end delay is improved 2.1% than RRBS, 3.5% than JET, 7.7% than DRR, 11.5% than JIT.