On the Traffic Offloading in Wi-Fi Supported Heterogeneous Wireless Networks

Ali Riza Ekti, Muhammad Zeeshan Shakir, Erchin Serpedin, Khalid A. Qaraqe, Muhammad A. Imran

Research output: Contribution to journalArticle

Abstract

Heterogeneous small cell networks (HetSNet) comprise several low power, low cost (SBSa), (D2D) enabled links wireless-fidelity (Wi-Fi) access points (APs) to support the existing macrocell infrastructure, decrease over the air signaling and energy consumption, and increase network capacity, data rate and coverage. This paper presents an active user dependent path loss (PL) based traffic offloading (TO) strategy for HetSNets and a comparative study on two techniques to offload the traffic from macrocell to (SBSs) for indoor environments: PL and signal-to-interference ratio (SIR) based strategies. To quantify the improvements, the PL based strategy against the SIR based strategy is compared while considering various macrocell and (SBS) coverage areas and traffic–types. On the other hand, offloading in a dense urban setting may result in overcrowding the (SBSs). Therefore, hybrid traffic–type driven offloading technologies such as (WiFi) and (D2D) were proposed to en route the delay tolerant applications through (WiFi) (APs) and (D2D) links. It is necessary to illustrate the impact of daily user traffic profile, (SBSs) access schemes and traffic–type while deciding how much of the traffic should be offloaded to (SBSs). In this context, (AUPF) is introduced to account for the population of active small cells which depends on the variable traffic load due to the active users.

Original languageEnglish
Pages (from-to)225-240
JournalJournal of Signal Processing Systems for Signal, Image, and Video Technology
Volume83
Issue number2
Early online date31 Oct 2015
DOIs
Publication statusPublished - May 2016
Externally publishedYes

Keywords

  • Heterogeneous networks
  • Small cells
  • Wi-Fi
  • WiGig
  • Wi-Fi Direct
  • Traffic offloading
  • Active user population factor
  • Path loss

Cite this

Ekti, Ali Riza ; Shakir, Muhammad Zeeshan ; Serpedin, Erchin ; Qaraqe, Khalid A. ; Imran, Muhammad A. / On the Traffic Offloading in Wi-Fi Supported Heterogeneous Wireless Networks. In: Journal of Signal Processing Systems for Signal, Image, and Video Technology. 2016 ; Vol. 83, No. 2. pp. 225-240.
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On the Traffic Offloading in Wi-Fi Supported Heterogeneous Wireless Networks. / Ekti, Ali Riza; Shakir, Muhammad Zeeshan; Serpedin, Erchin; Qaraqe, Khalid A.; Imran, Muhammad A.

In: Journal of Signal Processing Systems for Signal, Image, and Video Technology, Vol. 83, No. 2, 05.2016, p. 225-240.

Research output: Contribution to journalArticle

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T1 - On the Traffic Offloading in Wi-Fi Supported Heterogeneous Wireless Networks

AU - Ekti, Ali Riza

AU - Shakir, Muhammad Zeeshan

AU - Serpedin, Erchin

AU - Qaraqe, Khalid A.

AU - Imran, Muhammad A.

PY - 2016/5

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AB - Heterogeneous small cell networks (HetSNet) comprise several low power, low cost (SBSa), (D2D) enabled links wireless-fidelity (Wi-Fi) access points (APs) to support the existing macrocell infrastructure, decrease over the air signaling and energy consumption, and increase network capacity, data rate and coverage. This paper presents an active user dependent path loss (PL) based traffic offloading (TO) strategy for HetSNets and a comparative study on two techniques to offload the traffic from macrocell to (SBSs) for indoor environments: PL and signal-to-interference ratio (SIR) based strategies. To quantify the improvements, the PL based strategy against the SIR based strategy is compared while considering various macrocell and (SBS) coverage areas and traffic–types. On the other hand, offloading in a dense urban setting may result in overcrowding the (SBSs). Therefore, hybrid traffic–type driven offloading technologies such as (WiFi) and (D2D) were proposed to en route the delay tolerant applications through (WiFi) (APs) and (D2D) links. It is necessary to illustrate the impact of daily user traffic profile, (SBSs) access schemes and traffic–type while deciding how much of the traffic should be offloaded to (SBSs). In this context, (AUPF) is introduced to account for the population of active small cells which depends on the variable traffic load due to the active users.

KW - Heterogeneous networks

KW - Small cells

KW - Wi-Fi

KW - WiGig

KW - Wi-Fi Direct

KW - Traffic offloading

KW - Active user population factor

KW - Path loss

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DO - 10.1007/s11265-015-1064-7

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JO - Journal of Signal Processing Systems for Signal, Image, and Video Technology

JF - Journal of Signal Processing Systems for Signal, Image, and Video Technology

SN - 1939-8018

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