Protocol Impact of LTE Relays on User Performance

Author

Susitaival, Riikka

Author_Institution

NomadicLab, Ericsson Res., Kirkkonummi, Finland

fYear

2012

fDate

6-9 May 2012

Firstpage

1

Lastpage

5

Abstract

Relays are introduced for LTE Rel-10 in order to improve cell edge bitrates and coverage. 3GPP has specified both inband and outband relays. In this paper, we study the protocol level aspects of relays as well as cell-edge performance of a mobile terminal with system simulations. The results indicate that when a user is performing TCP downloads and uploads, in addition to potential subframe split between the backhaul and access link, also the adopted protocol solution and increased delays have impact on the user performance. Due to this, the bitrates may degrade even with outband relays if the UE having decent macro coverage is connected to a relay. However, when the UE has bad macro coverage, then there are gains from both inband and outband relays.

Keywords

3G mobile communication; Long Term Evolution; transport protocols; 3GPP; LTE Rel-10; LTE relays; access link; adopted protocol solution; backhaul; cell edge bitrates; cell-edge performance; inband relays; macro coverage; mobile terminal; outband relays; protocol impact; protocol level; system simulation; user performance; Bit rate; Gain; Interference; Protocols; Relays; Resource management; Strontium;

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.2012.6240068

Filename

6240068