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User relay assisted traffic shifting in LTE-advanced systems

User relay assisted traffic shifting in LTE-advanced systems
User relay assisted traffic shifting in LTE-advanced systems
In order to deal with uneven load distribution, mobility load balancing adjusts the handover region to shift edge users from a hot-spot cell to the less-loaded neighbouring cells. However, shifted users suffer the reduced signal power from neighbouring cells, which may result in link quality degradation. This paper employs a user relaying model and proposes a user relay assisted traffic shifting (URTS) scheme to deal with the above problem. In URTS, a shifted user selects a suitable non-active user as relay user to forward data, thus enhancing the link quality of the shifted user. Since the user relaying model consumes relay user’s energy, a utility function is designed in relay selection to reach a trade-off between the shifted user’s link quality improvement and the relay user’s energy consumption. Simulation results show that URTS scheme could improve SINR and throughput of shifted users. Also, URTS scheme keeps the cost of relay user’s energy consumption at an acceptable level.
mobility load balancing, link quality, relay selection
1-6
Xu, Lexi
3c548d0f-552d-4317-bacf-13945d506819
Chen, Yue
9b646fd4-7826-4d0b-b81a-c4bc5eae1be1
Chai, KoK Keong
93b50d34-c1af-4443-ae22-a53c2a8de11c
Liu, Dantong
9a7739d9-dea2-4520-a2fc-0d83aa3063c4
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Schormans, John
17a57e50-4342-4278-8b7a-27bfecd6837b
Xu, Lexi
3c548d0f-552d-4317-bacf-13945d506819
Chen, Yue
9b646fd4-7826-4d0b-b81a-c4bc5eae1be1
Chai, KoK Keong
93b50d34-c1af-4443-ae22-a53c2a8de11c
Liu, Dantong
9a7739d9-dea2-4520-a2fc-0d83aa3063c4
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Schormans, John
17a57e50-4342-4278-8b7a-27bfecd6837b

Xu, Lexi, Chen, Yue, Chai, KoK Keong, Liu, Dantong, Yang, Shaoshi and Schormans, John (2013) User relay assisted traffic shifting in LTE-advanced systems. 77th IEEE Vehicular Technology Conference (VTC 2013-Spring), Dresden, Germany. 02 - 05 Jun 2013. pp. 1-6 . (doi:10.1109/VTCSpring.2013.6692800).

Record type: Conference or Workshop Item (Paper)

Abstract

In order to deal with uneven load distribution, mobility load balancing adjusts the handover region to shift edge users from a hot-spot cell to the less-loaded neighbouring cells. However, shifted users suffer the reduced signal power from neighbouring cells, which may result in link quality degradation. This paper employs a user relaying model and proposes a user relay assisted traffic shifting (URTS) scheme to deal with the above problem. In URTS, a shifted user selects a suitable non-active user as relay user to forward data, thus enhancing the link quality of the shifted user. Since the user relaying model consumes relay user’s energy, a utility function is designed in relay selection to reach a trade-off between the shifted user’s link quality improvement and the relay user’s energy consumption. Simulation results show that URTS scheme could improve SINR and throughput of shifted users. Also, URTS scheme keeps the cost of relay user’s energy consumption at an acceptable level.

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More information

Published date: 4 June 2013
Venue - Dates: 77th IEEE Vehicular Technology Conference (VTC 2013-Spring), Dresden, Germany, 2013-06-02 - 2013-06-05
Keywords: mobility load balancing, link quality, relay selection
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 346785
URI: http://eprints.soton.ac.uk/id/eprint/346785
PURE UUID: 44e8fd44-04f4-4c65-a456-a72792854b36

Catalogue record

Date deposited: 09 Jan 2013 13:38
Last modified: 14 Mar 2024 12:41

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Contributors

Author: Lexi Xu
Author: Yue Chen
Author: KoK Keong Chai
Author: Dantong Liu
Author: Shaoshi Yang
Author: John Schormans

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