Power management for throughput enhancement in wireless ad-hoc networks

Patent 6735448 Issued on May 11, 2004. Estimated Expiration Date:

November 7, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Assignee

HRL Laboratories, LLC

Application

No. 09708271 filed on 11/07/2000

US Classes:

455/522, Transmission power control technique455/445, Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing)370/318Including power control

Examiners

Primary: Appiah, Charles N.

Attorney, Agent or Firm

Tope-McKay & Associates

Foreign Patent References

0903891 EP 03/01/1999
0051293 WO 08/01/2000

International Class

H04Q 720

Abstract

The present invention relates to power management within the context of wireless ad-hoc networks. More specifically to the effects of using different transmit powers on the average power consumption and end-to-end network throughput in a wireless ad-hoc environment. This power management approach reduces the system power consumption and thereby prolongs the battery life of mobile nodes. Furthermore, the invention improves the end-to-end network throughput as compared to other ad-hoc networks in which all mobile nodes use the same transmit power. The improvement is due to the achievement of a tradeoff between minimizing interference ranges, reduction in the average number of hops to reach a destination, reducing the probability of having isolated clusters, and reducing the average number of transmissions including retransmissions due to collisions. The present invention provides a network with better end-to-end throughput performance, and lower transmit power.

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