- 作者: Jyh-Horng Wen ; Shen-Cheng Yang
- 中文摘要: A reservation multiple access protocol combining shared time division duplexing (STDD) and packet reservation multiple access (PRMA), called STDD-PRMA, is proposed. It allows both the uplink and downlink traffic to share a common channel by means of the STDD scheme and to reserve subsequent time slots in future frames as in PRMA. For flexible use of the channel bandwidth, the base station plays a central control role in assigning available slots to unreserved downlink talkspurts without contentions prior to assignment to unreserved uplink talkspurts with successful contentions. In this paper, we describe the STDD-PRMA operation, evaluate sensitivities to system variables and make performance comparisons between PRMA and STDD-PRMA. Simulation results show that STDD-PRMA supports up to 44 (47) simultaneous conversations compared to 37 (39) for PRMA with a slow (fast) speech activity detector.
- 英文摘要: --
- 中文關鍵字: STDD-PRMA, microcellular communications, packet dropping probability, system capacity
- 英文關鍵字: --