Interference-aware cooperative QoS routing in multi-hop wireless networks

Wei Feng, Jian Liu, Jiannong Cao, Liang Yang, Qin Xin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


Cooperative communication is a new physical technology, which has the potential to improve QoS support for multi-hop wireless network. Existing works did not consider the interference effect among links while designing cooperative QoS routing. To overcome this limitation, this paper targets at designing an interference-aware Cooperative QoS routing algorithm (CQ-routing) to satisfy users' bandwidth requirement. We formulate the problem of finding cooperative routing path with maximum available bandwidth as an optimization problem, called Coop-routing problem. We prove that the Coop-routing problem is strong NP-hard. We propose both centralized and distributed algorithm to solve the Coop-routing problem. We prove that the centralized algorithm can achieve a constant approximation ratio. We evaluate the performance of these algorithms through simulations. The results show that CQ-routing algorithms can significantly improve the network performance in terms of available bandwidth and number of admitted flows.
Original languageEnglish
Pages (from-to)1650-1666
Number of pages17
JournalComputers and Electrical Engineering
Issue number6
Publication statusPublished - 1 Aug 2013

ASJC Scopus subject areas

  • Control and Systems Engineering
  • General Computer Science
  • Electrical and Electronic Engineering


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