A power control algorithm with high channel availability for vehicular ad hoc networks

We propose a new power control algorithm capable of managing the topology of a vehicular ad hoc network by adjusting transmission power dynamically. Our algorithm is simple to implement, as it is based only on local information and no exchange of power-related signaling among nodes is required. The algorithm has the objective of making the network operate with both a very low and a very high user density, while maintaining its performance unaltered. This target is obtained by controlling transmission power, so that the number of neighbors of each node is always within a minimum and maximum threshold. In this way, it is possible to cope concurrently with the problems of node isolation and clustering at low load and of excessive competition for radio resources at high load. Finally, the algorithm provides high channel availability for connected users. The algorithm is robust, as performance does not depend on user speed, which has a large variance in a vehicular scenario.

[1]  Vaduvur Bharghavan,et al.  A power controlled multiple access protocol for wireless packet networks , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[2]  Giacomo Verticale,et al.  Impact of user speed on the performance of a MAC protocol for vehicular ad-hoc networks , 2004 .

[3]  Suresh Subramaniam,et al.  On the performance of a new 802.11-based low latency power control MAC protocol for ad-hoc networks , 2003, 2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003..

[4]  Yu-Chee Tseng,et al.  Intelligent medium access for mobile ad hoc networks with busy tones and power control , 2000, IEEE Journal on Selected Areas in Communications.

[5]  R. Rozovsky,et al.  Protocols for media access control and power control in wireless networks , 2001, Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228).

[6]  Jenhui Chen,et al.  An improved data flushing MAC protocol for IEEE 802.11 wireless ad hoc network , 2002, Proceedings IEEE 56th Vehicular Technology Conference.

[7]  Srikanth V. Krishnamurthy,et al.  Power management for throughput enhancement in wireless ad-hoc networks , 2000, 2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record.

[8]  Akkihebbal L. Ananda,et al.  A QoS enabled MAC protocol for multi-hop ad hoc wireless networks , 2003, Conference Proceedings of the 2003 IEEE International Performance, Computing, and Communications Conference, 2003..

[9]  Shiann-Tsong Sheu,et al.  Design and implementation of a reservation-based MAC protocol for voice/data over IEEE 802.11 ad-hoc wireless networks , 2001, ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240).

[10]  Egon Schulz,et al.  Medium access and radio resource management for ad hoc networks based on UTRA TDD , 2001, MobiHoc '01.

[11]  Ram Ramanathan,et al.  Topology control of multihop wireless networks using transmit power adjustment , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[12]  F. Borgonovo,et al.  ADHOC: a new, flexible and reliable MAC architecture for ad-hoc networks , 2003, 2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003..