Packet relay through uplink common channel in 3G systems

Satoshi Okada, Masato Yamada, Ryoichi Shinkuma, Tatsuro Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Multihop techniques in CDMA (Code Division Multiple Access) radio access networks, enable dead-spot mobile stations, which cannot communicate with base stations directly, to send packets to them via other mobile stations. However, there are several requirements to apply the multihop techniques to ongoing third generation radio access networks. That is, infrastructure networks should not be changed and modifications to software and hardware of mobile stations should be minimized. Unfortunately, the conventionally proposed methods do not satisfy these requirements. In this paper, we propose a mechanism for establishing connections and relaying packets between mobile stations. In this mechanism, the mobile stations are connected to one another and relay data through a random access channel, which is an uplink common channel. In addition, it satisfies the requirements for applying multihop techniques to third generation radio access networks, which are based on CDMA/FDD (Frequency Division Duplex). Moreover, we also discuss our evaluation of the performance of the mechanism through computer simulations. The results we obtained reveal that it is capable of reducing dead-spot mobile stations and improving throughput with only limited modifications to conventional systems.

Original languageEnglish
Title of host publicationVTC 2005-Fall
Subtitle of host publicationMid Way Through the Decade - Technology Past, Present and Future
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)0780391527
Publication statusPublished - 2005
Externally publishedYes
Event62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
Duration: 2005 Sept 252005 Sept 28

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Conference62nd Vehicular Technology Conference, VTC 2005
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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