LTE In-Band Relay Prototype and Field Measurement

Author

Jiansong, Gan ; Zhiheng, Guo ; Rui, Fan ; Weihong, Liu ; Hai, Wang ; Sandlund, Kristofer ; Jianjun, Liu ; Xiaodong, Shen ; Guangyi, Liu

Author_Institution

Ericsson, Beijing, China

fYear

2012

fDate

6-9 May 2012

Firstpage

1

Lastpage

5

Abstract

Relaying is a feature defined in LTE Release 10 to provide coverage in new areas and/or to improve cell-edge throughput. For the purpose of investigating relay´s performance in a real network, an LTE TDD in-band relay prototype was developed. Based on this prototype some field measurements were conducted using LTE Release-8 terminals. Both indoor scenarios and outdoor scenarios were tested. Measurement results show that relays (once properly deployed) provide good coverage in the coverage holes of a donor eNB. Besides coverage extension, relays can also improve data rate in the poorly-covered area of a donor eNB, i.e. cell edge. The throughput of a terminal served by this relay prototype reaches around 8 Mbps in the uplink and 20 Mbps in the downlink. Regarding latency, given uplink data is always scheduled, the measured round-trip time via the relay is around 10 ms larger than that directly via the donor eNB.

Keywords

Long Term Evolution; telecommunication network planning; LTE Release 10; LTE in-band relay prototype; bit rate 20 Mbit/s; bit rate 8 Mbit/s; cell edge throughput; coverage extension; coverage holes; donor eNB; field measurement; relay performance; round trip time; Downlink; IP networks; Prototypes; Relays; Routing protocols; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th

Conference_Location

Yokohama

ISSN

1550-2252

Print_ISBN

978-1-4673-0989-9

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2012.6239938

Filename

6239938