User data rate enhancement using heterogeneous LTE-802.11n offloading in urban area

Siva Priya Thiagarajah, Alvin Ting, David Chieng, Mohamad Yusoff Alias, Tan Su Wei

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)

Abstract

Data offloading is a method to significantly improve network capacity. Offloading of data from macro-cells to pico-cells helps to ease capacity demand in hotspot areas where user distribution is dense and often demanding high bandwidths per user. This study uses a heterogeneous network using combined Long Term Evolution - WiFi IEEE 802.11n coverage to improve the capacity performance of the network. The heterogeneous network uses the offloading mechanism to enhance the per user capacity of the heterogeneous network. The user distribution is non-uniform and the 802.11n Access Points are positioned in areas with high user density. The offloading mechanism is based on a WiFi-First algorithm where users with sufficient Received Signal Strength to hop on to WiFi will be offloaded while the rest of the users will remain on the LTE network. A real digital map of Kuala Lumpur in the geospatial vector data format,. TAB is used for the simulations. The simulation results show that although around 50% of the users are offloaded to WiFi, the LTE network is only relieved 2.75% of the total capacity usage. This may seem small but due to offloading, nearly 100% increase in average capacity in experienced by the remaining LTE users from 0.05 Mbps to 0.09967 Mbps. The offloaded users also experience an increase of 0.876Mbps on average per user.

Original languageEnglish
Title of host publication2013 IEEE Symposium on Wireless Technology and Applications, ISWTA 2013
PublisherIEEE Computer Society
Pages11-16
Number of pages6
ISBN (Print)9781479901562
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 3rd IEEE Symposium on Wireless Technology and Applications, ISWTA 2013 - Kuching, Malaysia
Duration: 22 Sep 201325 Sep 2013

Publication series

NameIEEE Symposium on Wireless Technology and Applications, ISWTA
ISSN (Print)2324-7843
ISSN (Electronic)2324-7851

Conference

Conference2013 3rd IEEE Symposium on Wireless Technology and Applications, ISWTA 2013
Country/TerritoryMalaysia
CityKuching
Period22/09/1325/09/13

Keywords

  • 802.11n
  • Heterogeneous Network
  • LTE
  • Traffic Offload

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Signal Processing

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