A dynamic TDMA-based MAC protocol with QoS guarantees for fully connected ad hoc networks

被引：12
|
作者：
Lei, Lei [1 ]
Cai, Shengsuo [1 ]
Luo, Cheng [1 ]
Cai, Weiling [2 ]
Zhou, Jinhua [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Normal Univ, Coll Comp Sci & Technol, Nanjing, Jiangsu, Peoples R China
来源：
TELECOMMUNICATION SYSTEMS | 2015年 / 60卷 / 01期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
Fully connected ad hoc networks; TDMA protocol; Dynamic; QoS guarantees; Scalable;
D O I：
10.1007/s11235-014-9920-5
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper presents DT-MAC, a dynamic TDMA based medium access control (MAC) protocol designed to offer collision-free transmissions while providing QoS guarantees for different services in scalable fully connected ad hoc networks. In DT-MAC, a new time frame structure which consists of synchronization, request, assignment and data slots is put forward. In each frame, the number of slots and their lengths are adaptively adjusted according to the number of nodes and their services in the network. Meanwhile, a distributed frame synchronization method is proposed to provide synchronization guarantee for the nodes and generate a manager node for each frame to dynamically allocate the slots according to the QoS requirements of different services. Besides, by introducing request slot, DT-MAC can make nodes join or leave the network without conflicts. Simulation results show that DT-MAC performs better in providing QoS guarantees and accommodating the change of network scale compared with conventional TDMA-based MAC protocols.
引用
收藏
页码：43 / 53
页数：11
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