A Priority MAC Protocol to Support Real-time Multimedia Traffics in Ad Hoc Networks

• Main Authors: Chi-Hsun Liu, 劉耆勳
• Other Authors: Jang-Ping Sheu
• Format: Others
• Language: en_US
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/39690293229122069821

碩士 === 國立中央大學 === 資訊工程研究所 === 89 === Carrier sense multiple access and its variants have been widely used in mobile ad hoc networks (MANET). However, it cannot guarantee the quality of real-time traffics. This thesis presents a distributed medium access control (MAC) protocol that provides priority based multimedia access to wireless ad-hoc networks. With this protocol, it has two phases to proceed. First, each station that wants to contend for access to the channel proceed the priority scheme, higher-priority packets (like real-time packets) have access priority over the lower-priority packets (like data packets). Second, after the priority scheme, the stations that have the same priority packets are assigned an unique ID (identity number) respectively in the contention period, and then (after the contention period) all stations that want to transmit packets depend on their ID sequence to access channel in turn. The simulation result used to verify this protocol, it can bounded real-time packet delay and has the high channel utilization.