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WO2009157849A1 - Rapport cqi/ack échelonné dans des systèmes hsdpa possédant de multiples canaux de signalisation montants - Google Patents

Rapport cqi/ack échelonné dans des systèmes hsdpa possédant de multiples canaux de signalisation montants Download PDF

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Publication number
WO2009157849A1
WO2009157849A1 PCT/SE2009/050642 SE2009050642W WO2009157849A1 WO 2009157849 A1 WO2009157849 A1 WO 2009157849A1 SE 2009050642 W SE2009050642 W SE 2009050642W WO 2009157849 A1 WO2009157849 A1 WO 2009157849A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
ack
harq
channel quality
nack
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/SE2009/050642
Other languages
English (en)
Inventor
Johan Bergman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of WO2009157849A1 publication Critical patent/WO2009157849A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT

Definitions

  • the present invention relates to a method and apparatus in a telecommunication system.
  • the present invention relates to a method and arrangement for improving CQI/HARQ ACK/NACK reporting in a multi carrier HSDPA operation.
  • High Speed Downlink Packet Access In a High Speed Downlink Packet Access (HSDPA) communications system, data channels, High Speed Downlink Shared Channel (HS-DSCH), and related control channels, High Speed Shared Control Channel (HS-SCCH), are transmitted as shared channels downlink and one feedback channel, High Speed Dedicated Physical Control Channel (HS-DPCCH), is transmitted per user in the uplink.
  • HSDPA High Speed Downlink Packet Access
  • the HS-DPCCH channel carries a Hybrid Automatic Repeat Request (HARQ)
  • ACK/NACK Acknowledgement/Negative Acknowledgement
  • CQI downlink channel quality indicator
  • a CQI is transmitted to the base station often enough to provide a scheduler in the base station of the HSDPA system with adequate information to be able to select appropriate data transmission formats for the user.
  • the CQIs should not be transmitted more often than necessary.
  • the CQIs from a user are normally transmitted periodically in accordance with a configurable CQI feedback cycle.
  • 3GPP Third Generation Partnership Program
  • WCDMA Wideband Code Division Multiple Access
  • Rel-7 Wideband Code Division Multiple Access
  • Multi- carrier HSDPA operation with two downlink carrier frequencies is introduced in 3GPP WCDMA Rel-8.
  • One way to support HSDPA operation on multiple carriers is to duplicate the data and control signaling that has been specified for single-carrier HSDPA operation in earlier 3GPP releases.
  • each UE can be given the task to monitor not only one HS-SCCH set, but one HS-SCCH set per downlink carrier.
  • the UE can be required to transmit not only one HS- DPCCH channel, but one HS-DPCCH channel per downlink carrier allocated to the UE.
  • this and other objects of the present invention are accomplished by application of time staggering between the CQI reporting patterns in the uplink corresponding to different downlink carriers.
  • CDM Code Division Multiplex
  • one solution is to let the UE transmit multiple simultaneous Code Division Multiplex (CDM)- multiplexed HS-DPCCH channels in parallel.
  • CDM Code Division Multiplex
  • a higher UE transmit power will be required compared to transmitting a single HS-DPCCH channel. This can decrease uplink coverage, because when the UE is far from the base station, the UE may not have enough transmit power to transmit all HS-DPCCH channels simultaneously.
  • a method of transmitting a Channel Quality Indicator in a cellular radio system from a User Equipment having multiple uplink channels to the radio system is provided.
  • the User Equipment is adapted to transmit Channel Quality Indicator in at least two of the uplink channel with the Channel Quality Indicators staggered in time in the at least two uplink channels.
  • the different uplink channels can in one embodiment correspond to different High Speed Dedicated Physical Control Channel (HS-DPCCH) channels.
  • HS-DPCCH High Speed Dedicated Physical Control Channel
  • the invention also extends to a User Equipment adapted to transmit staggered CQI reports in accordance with the above.
  • the uplink coverage can be equal to the uplink coverage in single-carrier HSDPA operation.
  • - Fig. 1 is a view illustrating a cellular radio system system
  • - Fig. 2 is a view illustrating time staggered CQI reports
  • - Fig. 3 is a flow chart illustrating some procedural steps performed when transmitting CQI reports from a UE supporting multiple uplink channels.
  • a view illustrating a cellular WCDMA radio system 100 is shown.
  • the system comprises a number of radio base stations here denoted Node B 101.
  • the Node Bs 101 can be connected to a central node such as a Radio Network Controller (RNC) 105.
  • the base stations 101 are further connectable to mobile stations also denoted User Equipments (UE) 103 of the radio system 100 over a radio interface.
  • the UE can further comprise a unit adapted to generate and transmit CQI feedback on multiple uplink channels to a radio base station NodeB to which the UE is connected.
  • the radio base station is provided with a scheduler 109.
  • the UE 103 further comprises a module 104 adapted transmit the Channel Quality Indicators and/or HARQ ACK/NACK staggered in time.
  • the UE For each downlink carrier allocated to a user, the UE transmits one HS-DPCCH channel that carries HARQ- ACK/NACK and CQI for that user. If the HS-DPCCH channels are transmitted in a time-aligned fashion the UE transmit power will have peaks when several HARQ- ACK/NACKs or CQIs are transmitted simultaneously. In order to maximize the uplink coverage, it is desired to average the UE transmit power over time.
  • FIG 2 a transmission pattern for generating a sufficient average transmission power is depicted.
  • the figure shows a way to avoid the UE transmit power peak by staggering the CQI feedback cycles for different HS-DPCCH channels in time.
  • One way to achieve this staggering is to introduce a time offset parameter for the CQI feedback pattern for each (additional) HS-DPCCH channel.
  • the staggering can in accordance with one embodiment be applied all the time or in periods where coverage can be limited.
  • staggering can be controlled by the network for example by transmitting control commands causing the UE to make use of staggering. The network could control this either by higher-layer reconfiguration from the RNC or via lower-layer signaling, e.g. orders via HS-SCCH from the base station.
  • the time staggering can be tied to the Rel-7 feature for CQI reporting reduction, so that the time staggering only applies to the reduced CQI reporting patterns, which are used when a user has a low downlink data activity.
  • the HARQ- ACK/NACKs can also be staggered by configuring the transmissions to avoid to schedule HSDPA transmissions to the same user simultaneously on several downlink carriers.
  • Fig. 3 a flow chart illustrating some procedural steps performed when transmitting CQI reports and/or HARQ ACK/NACKs from a User Equipment supporting multiple uplink channels is shown.
  • a step 301 CQI Reports and/or HARQ ACK/NACKs for the different uplink channels are generated.
  • the CQI Reports and/or HARQ ACK/NACKs for the different uplink channels are transmitted time staggered.
  • staggering can be controlled by the network for example by transmitting control commands causing the UE to make use of staggering.
  • the network can be configured to perform the control either by higher-layer reconfiguration from the Radio Network Controller (RNC) or via lower-layer signaling, e.g. orders via the High Speed Shared Control Channel (HS-SCCH) from the radio base station.
  • RNC Radio Network Controller
  • HS-SCCH High Speed Shared Control Channel
  • the time staggering can be tied to the Rel-7 feature for CQI reporting reduction, so that the time staggering only applies to the reduced CQI reporting patterns, which are used when a user has a low downlink data activity.
  • the HARQ- ACK/NACKs can also be staggered by configuring the transmissions to avoid to schedule High Speed Downlink Packet Access (HSDPA) transmissions to the same user simultaneously on several downlink carriers.
  • HSDPA High Speed Downlink Packet Access
  • the uplink coverage can be equal to the uplink coverage in single-carrier HSDPA operation.
  • LTE Long Term Evolution
  • WiMAX Worldwide Interoperability for Microwave Access

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L’invention concerne un procédé de transmission d’un indicateur de qualité de canal (CQI) et/ou HARQ AR/ARN dans un système radio cellulaire, à partir d’un équipement utilisateur possédant de multiples canaux montants vers le système radio. L’équipement utilisateur est adapté à la transmission d’un indicateur de qualité de canal dans au moins deux des canaux montants, les indicateurs de qualité de canal étant échelonnés dans le temps dans les deux canaux montants ou plus. Dans un mode de réalisation, les différents canaux montants peuvent correspondre à différents canaux du canal de signalisation physique dédié à grande vitesse (HS-DPCCH).
PCT/SE2009/050642 2008-06-26 2009-06-02 Rapport cqi/ack échelonné dans des systèmes hsdpa possédant de multiples canaux de signalisation montants Ceased WO2009157849A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7592208P 2008-06-26 2008-06-26
US61/075,922 2008-06-26

Publications (1)

Publication Number Publication Date
WO2009157849A1 true WO2009157849A1 (fr) 2009-12-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/050642 Ceased WO2009157849A1 (fr) 2008-06-26 2009-06-02 Rapport cqi/ack échelonné dans des systèmes hsdpa possédant de multiples canaux de signalisation montants

Country Status (1)

Country Link
WO (1) WO2009157849A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011086533A1 (fr) * 2010-01-15 2011-07-21 Nokia Corporation Codage de canal d'accusé de réception harq pour système mimo hsdpa à quatre porteuses
EP2398176A1 (fr) * 2010-06-18 2011-12-21 Alcatel Lucent Configuration de réseau à multi-porteuses
CN102468936A (zh) * 2010-11-09 2012-05-23 大唐移动通信设备有限公司 Ack/nack反馈信息和周期cqi/pmi/ri反馈比特同时传输的方法和设备
WO2013051986A1 (fr) * 2011-10-04 2013-04-11 Telefonaktiebolaget L M Ericsson (Publ) Transmission hs-dpcch basée sur des secteurs, pour des transmissions hsdpa multi-flux
EP2793416A1 (fr) * 2013-04-15 2014-10-22 Vodafone IP Licensing limited Canaux de commande de liaison montante haute vitesse
US9137642B2 (en) 2013-03-20 2015-09-15 Google Inc. Multi-cast optimized medium access method for wireless network
US9319898B2 (en) 2012-08-29 2016-04-19 Samsung Electronics Co., Ltd. Wireless communication system with rate selection mechanism and method of operation thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050068990A1 (en) * 2003-09-29 2005-03-31 Jung-Tao Liu Method of aligning physical channels for uplink transmission
US20070060165A1 (en) * 2005-07-20 2007-03-15 Black Peter J Asymmetric mode of operation in multi-carrier communication systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050068990A1 (en) * 2003-09-29 2005-03-31 Jung-Tao Liu Method of aligning physical channels for uplink transmission
US20070060165A1 (en) * 2005-07-20 2007-03-15 Black Peter J Asymmetric mode of operation in multi-carrier communication systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SIEMENS: "Timing Relationship for Enhanced Uplink", 3GPP DRAFT; R1-030005, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. San Diego, USA; 20030102, 2 January 2003 (2003-01-02), XP050097141 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011086533A1 (fr) * 2010-01-15 2011-07-21 Nokia Corporation Codage de canal d'accusé de réception harq pour système mimo hsdpa à quatre porteuses
US9401781B2 (en) 2010-01-15 2016-07-26 Nokia Technologies Oy HARQ acknowledgment channel coding for 4-carrier HSDPA MIMO
EP2398176A1 (fr) * 2010-06-18 2011-12-21 Alcatel Lucent Configuration de réseau à multi-porteuses
WO2011157365A1 (fr) * 2010-06-18 2011-12-22 Alcatel Lucent Configuration de réseau multiporteuse
CN102468936A (zh) * 2010-11-09 2012-05-23 大唐移动通信设备有限公司 Ack/nack反馈信息和周期cqi/pmi/ri反馈比特同时传输的方法和设备
CN102468936B (zh) * 2010-11-09 2014-12-10 大唐移动通信设备有限公司 Ack/nack反馈信息和周期cqi/pmi/ri反馈比特同时传输的方法和设备
WO2013051986A1 (fr) * 2011-10-04 2013-04-11 Telefonaktiebolaget L M Ericsson (Publ) Transmission hs-dpcch basée sur des secteurs, pour des transmissions hsdpa multi-flux
US9319898B2 (en) 2012-08-29 2016-04-19 Samsung Electronics Co., Ltd. Wireless communication system with rate selection mechanism and method of operation thereof
US9137642B2 (en) 2013-03-20 2015-09-15 Google Inc. Multi-cast optimized medium access method for wireless network
US9432145B2 (en) 2013-03-20 2016-08-30 Google Inc. Multi-cast optimized medium access method for wireless network
EP2793416A1 (fr) * 2013-04-15 2014-10-22 Vodafone IP Licensing limited Canaux de commande de liaison montante haute vitesse

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