This paper presents R-CACC (Reservation-CACC) access control scheme for a multiaccess broadcast channel.R-CACC scheme consists of two essential functions 1) CACC (Catch-As-Catch-Can) algorithm:the request packets are transmitted in a ALOHA mode to the request subchannel with virtually larger capacity than the data subchannel,and the data packets are transmitted according to the results of the request access, and 2) reservation function:the data slot assigned to a user in a frame is reserved for the same user in the consecutive frames until the user has no more data to transmit.To evaluate the performance of R-CACC,we provide two analytical methods;an exact two dimensional Markov analysis for a geometric message length distribution and an approximate three dimensional Markov analysis for a bimodal message length distribution.We compare R-CACC with the other three control schemes on the throughput-delay performance and prove the validity and availability of R-CACC scheme for both burst-typed and stream-typed traffics.
展开▼
