Improving Data Throughput for Cell-Edge Users in a LTE Network Using Up-Link HARQ Relays

Author

Braithwaite, R. Neil

Author_Institution

Powerwave Technol., Santa Ana, CA, USA

fYear

2011

fDate

5-8 Sept. 2011

Firstpage

1

Lastpage

5

Abstract

It is proposed that up-link relays be used to improve the data throughput for user equipment (UE) near the cell edge in a LTE network. Relay assistance on the up-link occurs when the evolved Node B (eNB) requests a retransmission (HARQ) from the UE at which point the UE and relay transmit simultaneously. The quality of the up-link signal received by the eNB is improved due to a favorable channel through the relay. An analysis and simulation show that relay assistance improves the throughput for a cell-edge user when the average delay per data transport block is allowed to increase. A modification of the up-link power control is recommended when using relays, where the maximum power transmitted by the UE is reduced.

Keywords

Long Term Evolution; automatic repeat request; LTE network; cell-edge user; cell-edge users; data throughput; evolved Node B; up-link HARQ relays; uplink power control; user equipment; wireless communication network; Indexes; Modulation coding; Power control; Receivers; Relays; Signal to noise ratio; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2011 IEEE

Conference_Location

San Francisco, CA

ISSN

1090-3038

Print_ISBN

978-1-4244-8328-0

Type

conf

DOI

10.1109/VETECF.2011.6092980

Filename

6092980