WO2008041940A3 - Uplink reference signal hopping in cellular telecommunication system - Google Patents

Uplink reference signal hopping in cellular telecommunication system Download PDF

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Publication number
WO2008041940A3
WO2008041940A3 PCT/SE2007/050700 SE2007050700W WO2008041940A3 WO 2008041940 A3 WO2008041940 A3 WO 2008041940A3 SE 2007050700 W SE2007050700 W SE 2007050700W WO 2008041940 A3 WO2008041940 A3 WO 2008041940A3
Authority
WO
WIPO (PCT)
Prior art keywords
reference signal
mobile terminals
reception
telecommunication system
uplink reference
Prior art date
Application number
PCT/SE2007/050700
Other languages
French (fr)
Other versions
WO2008041940A2 (en
Inventor
Erik Dahlman
Original Assignee
Ericsson Telefon Ab L M
Erik Dahlman
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M, Erik Dahlman filed Critical Ericsson Telefon Ab L M
Publication of WO2008041940A2 publication Critical patent/WO2008041940A2/en
Publication of WO2008041940A3 publication Critical patent/WO2008041940A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0055—ZCZ [zero correlation zone]
    • H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
    • H04J13/0062—Zadoff-Chu
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/22—Allocation of codes with a zero correlation zone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26132—Structure of the reference signals using repetition

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to cellular telecommunications and in particular allocation of reference signals to mobile terminals for uplink transmission. The purpose of the reference signal is for estimation of the uplink channel in a radio base station. The object of the present invention is to reduce the worst case interference scenario impact on the reception of the reference signal. The object is achieved by a method where the mobile terminals are allocated plural reference signals to alternate between in subsequent transmissions according to a hopping scheme. Thereby transmissions from the worst interfering mobile terminal in another cell will collide with reception from different terminals in the own cell, albeit only non-frequent collisions with each of them. Thereby, data received from the mobile terminals will be possible to detect also with the low-frequent collision.
PCT/SE2007/050700 2006-10-05 2007-10-02 Uplink reference signal hopping in cellular telecommunication system WO2008041940A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0602102-6 2006-10-05
SE0602102 2006-10-05

Publications (2)

Publication Number Publication Date
WO2008041940A2 WO2008041940A2 (en) 2008-04-10
WO2008041940A3 true WO2008041940A3 (en) 2008-05-29

Family

ID=39268916

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/050700 WO2008041940A2 (en) 2006-10-05 2007-10-02 Uplink reference signal hopping in cellular telecommunication system

Country Status (2)

Country Link
AR (1) AR063143A1 (en)
WO (1) WO2008041940A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102752034A (en) * 2008-11-04 2012-10-24 华为技术有限公司 Methods for wireless communication system
EP3179665B1 (en) 2008-11-04 2021-05-19 Huawei Technologies Co., Ltd. Method in a wireless communication system
EP3729667B1 (en) * 2017-12-22 2024-04-10 ZTE Corporation Spreading code sequences for reference signals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0565506A2 (en) * 1992-04-10 1993-10-13 Ericsson Inc. Multiple access coding for radio communication
US20050226140A1 (en) * 2004-03-30 2005-10-13 Xiangyang Zhuang Method and apparatus for pilot signal transmission
US20060056360A1 (en) * 2004-09-13 2006-03-16 Stefan Parkvall Method and apparatus for spreading sequence hopping in code-multiplexed control channels
WO2007126793A2 (en) * 2006-03-27 2007-11-08 Texas Instruments Incorporated Random access structure for wireless networks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0565506A2 (en) * 1992-04-10 1993-10-13 Ericsson Inc. Multiple access coding for radio communication
US20050226140A1 (en) * 2004-03-30 2005-10-13 Xiangyang Zhuang Method and apparatus for pilot signal transmission
US20060056360A1 (en) * 2004-09-13 2006-03-16 Stefan Parkvall Method and apparatus for spreading sequence hopping in code-multiplexed control channels
WO2007126793A2 (en) * 2006-03-27 2007-11-08 Texas Instruments Incorporated Random access structure for wireless networks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NTT DOCOMO: "Channel-Dependent Packet Scheduling for Single-Carrier FDMA in Evolved UTRA Uplink", TSG-RAN WG1#43, SEOUL, KOREA, vol. R1-051390, 7 November 2005 (2005-11-07) - 11 November 2005 (2005-11-11), pages 1 - 8, XP003001808 *

Also Published As

Publication number Publication date
AR063143A1 (en) 2008-12-30
WO2008041940A2 (en) 2008-04-10

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