User association in backhaul constrained small cell networks

Tao Han, Nirwan Ansari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

Explosive data traffic growth has led to a continuous surge in capacity demands in mobile networks. In order to provision high network capacity, small cell base stations (SCBSs) are widely deployed. Owing to the close proximity to mobile users, SCBSs can effectively enhance the network capacity and offloading traffic load from macro BSs (MBSs). However, the cost-effective backhaul may not be readily available for SCBSs that leads to backhaul constraints in small cell networks. In this paper, we investigate the traffic offloading in backhaul constrained small cell networks. We have proposed a network latency aware user association scheme that balances traffic loads among base stations (BSs) to minimize the average traffic delivery latency of the mobile network. The proposed network latency aware user association scheme considers the traffic delivery latency in both BSs and their backhaul during the process of establishing user associations. We have proved that the proposed user association scheme converges to the optimal solution that minimizes the average traffic delivery latency of the network. The simulation results show that the proposed scheme reduces the average traffic delivery latency by 63% and 34% as compared to the user association scheme that considers only the traffic delivery latency in BSs and a two-tier data rate bias user association scheme, respectively.

Original languageEnglish (US)
Title of host publication2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1637-1642
Number of pages6
ISBN (Electronic)9781479984060
DOIs
StatePublished - Jan 1 2015
Event2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 - New Orleans, United States
Duration: Mar 9 2015Mar 12 2015

Other

Other2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
CountryUnited States
CityNew Orleans
Period3/9/153/12/15

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Computer Science Applications
  • Signal Processing

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