Title :
A Node-Based Time Slot Assignment Algorithm for STDMA Wireless Mesh Networks
Author :
Weiwei Chen ; Chin-Tau Lea
Author_Institution :
Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
Abstract :
Most slot assignment algorithms that are proposed for spatial time-division multiple-access (STDMA) mesh networks use a simplified transmission model that does not consider the time-varying fading characteristic of a wireless channel. In addition, these algorithms are usually link based, and scheduling in each slot is fixed and done for links. When the scheduled link is in deep fade or has no traffic, the slot that is given to that link will be wasted. In this paper, we present a node-based slot assignment scheme in which scheduling in each slot is done for nodes and not links. Because a node has multiple links, it can exploit multiuser diversity, i.e., different links have different traffic and fading conditions, to achieve much better performance.
Keywords :
diversity reception; fading channels; telecommunication traffic; time division multiple access; wireless mesh networks; STDMA wireless mesh network; fading condition; multiuser diversity; node-based time slot assignment algorithm; spatial time-division multiple-access; time-varying fading characteristic; traffic condition; transmission model; wireless channel; Fading; Interference; Mesh networks; Routing; Throughput; Transmitters; Wireless communication; Multihop routing; multiuser diversity; spatial time-division multiple-access (STDMA) wireless networks; time slot assignment;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2012.2214492
