A TDMA MAC protocol for multiservice wireless ad hoc networks

作者：Ramon Gallego Jose; C****es Maria; Hernandez Solana Angela; Valdovinos Antonio

来源：Wireless Communications and Mobile Computing, 2010, 10(6): 787-810.

DOI：10.1002/wcm.789

• ad hoc networks
• MAC protocols
• resource reservation
• service differentiation
• interference-aware
• multipath fading

Quality of Service (QoS) provision in wireless ad hoc networks requires the support of efficient MAC protocols and Radio Resource Management strategies to efficiently handle the access process and to achieve a high resource reuse. In this context, we present in this paper a MAC proposal capable of providing resource reservation and service differentiation in the medium access level as a basis for guaranteeing end-to-end QoS support in higher levels. We propose a TDMA MAC structure based on a frame subdivision consisting of a broadcast control phase and a data phase. We have designed an adaptive strategy to share the resources between both control and data services and a resource reservation strategy for data services that solves the problems stemmed from the contention for the medium, also adding a service differentiation mechanism based on priorities. In addition, we evaluate the impact of a realistic propagation channel considering multipath fading and users interference on the performance of this scheme. In this scenario, we propose modifications to guarantee the reliability and efficiency of both broadcast control and data services, including power control techniques.

• 出版日期2010-6