DocumentCode :
3493483
Title :
GCQCP Based Vertical Handoff Scheme for Heterogeneous Hierarchical Wireless Networks
Author :
Ning, Guoqin ; Zhang, Jing ; Liu, Gan ; Zhu, Guangxi
Author_Institution :
Dept. of Inf. Technol., Huazhong Normal Univ., Wuhan
fYear :
2007
fDate :
21-25 Sept. 2007
Firstpage :
1761
Lastpage :
1765
Abstract :
A handoff scheme based on guard channel, queuing and channel preemption (GCQCP) is proposed to guarantee the QoS of handoff traffic in the heterogeneous hierarchical wireless networks. On the basis of bidirectional call-overflow between different networks, guard channels are set for real-time traffic handoffs and buffer queues are set for nonreal-time traffic handoffs. In order to further decrease the call dropping probability of real-time traffic handoffs, channel preemption is also used, which principle is that real time traffic handoff calls can preempt the channel resources occupied by the nonreal-time traffic. Simulation results show that the proposed handoff control scheme can remarkably decrease the dropping probability of real-time traffic handoffs, the channel utilization of overall heterogeneous system is slightly increased simultaneously.
Keywords :
quality of service; queueing theory; radio networks; real-time systems; telecommunication traffic; wireless channels; GCQCP based vertical handoff scheme; QoS; guard channel; heterogeneous hierarchical wireless network; quality of service; queuing-channel preemption; real-time traffic; Communication system traffic control; Gallium nitride; Information technology; Macrocell networks; Microcell networks; Quality of service; Real time systems; Telecommunication traffic; Traffic control; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
Type :
conf
DOI :
10.1109/WICOM.2007.442
Filename :
4340217
Link To Document :
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