J4 ›› 2010, Vol. 37 ›› Issue (1): 73-79.doi: 10.3969/j.issn.1001-2400.2010.01.013

• Original Articles • Previous Articles     Next Articles

Novel strategy for dynamic partner choice

ZHANG Yan;SHENG Min;LI Jian-dong;TIAN Ye;YAO Jun-liang   

  1. (State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2009-01-07 Online:2010-02-20 Published:2010-03-29
  • Contact: ZHANG Yan E-mail:yzhang@pcn.xidian.edu.cn

Abstract:

Partner choice is a basic problem in a coded cooperative network. In this paper, a novel partner choice algorithm (Rate Adaptation Cooperation-Dynamic Protocol for Lifetime Maximization——RAC-DPLM) is proposed, which can adapt to the transmission rate and maximize network lifetime efficiently. By considering the expected traffic transmission rate, channel state information (CSI) and residual energy information (REI) together, our scheme aims at optimizing the network lifetime. Furthermore, the complexity of our scheme is reduced by converting the nonlinear program into a linear program. Our scheme is able to allocate the network resource dynamically and guarantee the QoS for different traffic rates, which contributes to the extension of the network lifetime. Simulation results show that the network lifetime is prolonged about 4~6 times compared with the fixed priority selection scheme under QoS constrains.

Key words: coded cooperation, partner choice, resource allocation, network lifetime, quality of service