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分组预约多址(PRMA)协议已被广泛地应用于短距离无线通信系统中,它不仅适用于数据传输,同样也适用于话音传输。但由于PRMA协议的帧长是固定的,竞争的产生使部分时隙被浪费,信道容量不能更好地被提高,而且在重负荷情况下系统会发生不稳定问题。提出了一种改进的分组预约多址协议(IPRMA),进行了理论分析和计算机仿真,由于采用排队等待方式接入时隙信道,降低了分组时延,减少了分组丢弃率,从而提高了系统容量。
Packet Reservation Multiple Access (PRMA) protocol has been widely used in short-range wireless communication systems, it is not only suitable for data transmission, also applies to voice transmission. However, since the frame length of the PRMA protocol is fixed, some of the time slots are wasted due to the competition, the channel capacity can not be better improved, and the system may experience instability under heavy load. An improved packet reservation multiple access protocol (IPRMA) is proposed, and theoretical analysis and computer simulation are carried out. By using queuing and waiting mode to access the time slot channel, packet delay is reduced and packet discard rate is reduced, thereby improving the system capacity.