WO2014023963A3 - Cqi adjustment - Google Patents

Cqi adjustment Download PDF

Info

Publication number
WO2014023963A3
WO2014023963A3 PCT/GB2013/052116 GB2013052116W WO2014023963A3 WO 2014023963 A3 WO2014023963 A3 WO 2014023963A3 GB 2013052116 W GB2013052116 W GB 2013052116W WO 2014023963 A3 WO2014023963 A3 WO 2014023963A3
Authority
WO
WIPO (PCT)
Prior art keywords
cqi
indication
radio conditions
time
base station
Prior art date
Application number
PCT/GB2013/052116
Other languages
French (fr)
Other versions
WO2014023963A2 (en
Inventor
Ashley Mills
Eric Douglas MURRAY
Original Assignee
Vodafone Ip Licensing Limited
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
Priority to GB1214185.9A priority Critical patent/GB2504739B/en
Priority to GB1214185.9 priority
Application filed by Vodafone Ip Licensing Limited filed Critical Vodafone Ip Licensing Limited
Publication of WO2014023963A2 publication Critical patent/WO2014023963A2/en
Publication of WO2014023963A3 publication Critical patent/WO2014023963A3/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/12Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel
    • H04W72/1205Schedule definition, set-up or creation
    • H04W72/1226Schedule definition, set-up or creation based on channel quality criteria, e.g. channel state dependent scheduling
    • H04W72/1231Schedule definition, set-up or creation based on channel quality criteria, e.g. channel state dependent scheduling using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0033Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter

Abstract

A base station of a cellular telecommunications network is provided, the base station being adapted to: receive a channel quality indicator 'CQI' from a user equipment 'UE'; determine an indication of radio conditions at a first time contributing to the received CQI; and, schedule actions or instructions, including selecting a modulation and coding scheme 'MCS', in accordance with an adjusted CQI, wherein the adjusted CQI is calculated by: determining an indication of radio conditions at a second time later than the first time; and, evaluating the indication of radio conditions at the second time against the indication of radio conditions contributing to the received CQI. A method and computer readable storage medium are also provided.
PCT/GB2013/052116 2012-08-08 2013-08-08 Cqi adjustment WO2014023963A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1214185.9A GB2504739B (en) 2012-08-08 2012-08-08 CQI adjustment
GB1214185.9 2012-08-08

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13750112.8A EP2883407A2 (en) 2012-08-08 2013-08-08 Cqi adjustment
US14/420,340 US20150201428A1 (en) 2012-08-08 2013-08-08 Cqi adjustment

Publications (2)

Publication Number Publication Date
WO2014023963A2 WO2014023963A2 (en) 2014-02-13
WO2014023963A3 true WO2014023963A3 (en) 2014-05-08

Family

ID=46935117

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2013/052116 WO2014023963A2 (en) 2012-08-08 2013-08-08 Cqi adjustment

Country Status (4)

Country Link
US (1) US20150201428A1 (en)
EP (1) EP2883407A2 (en)
GB (1) GB2504739B (en)
WO (1) WO2014023963A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9705635B2 (en) * 2015-03-06 2017-07-11 At&T Intellectual Property I, L.P. Apparatus and method to identify user equipment performance and to optimize network performance via big data
US9872188B2 (en) * 2015-07-28 2018-01-16 Futurewei Technologies, Inc. Adaptive filtering based network anomaly detection
EP3503655A4 (en) * 2016-09-13 2019-07-31 Huawei Tech Co Ltd Adaptive modulation and coding method and base station
WO2018162045A1 (en) * 2017-03-07 2018-09-13 Huawei Technologies Co., Ltd. Method and apparatus for handover aware cqi adjustment in wireless networks

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011032274A1 (en) * 2009-09-15 2011-03-24 Nortel Networks Limited Adaptive modulation and coding scheme adjustment in wireless networks
WO2011104717A1 (en) * 2010-02-28 2011-09-01 Celeno Communications Ltd. Backoff adaptation for digital communication systems with channel quality information

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7522555B2 (en) * 2005-01-21 2009-04-21 Intel Corporation Techniques to manage channel prediction
KR20070033115A (en) * 2005-09-20 2007-03-26 삼성전자주식회사 System and method for allocate of adaptive modulation coding level in a broadband wireless access communication system
US20070082619A1 (en) * 2005-10-06 2007-04-12 Interdigital Technology Corporation Method and apparatus for controlling downlink transmission power for ofdma based evolved utra
US20090131066A1 (en) * 2007-11-20 2009-05-21 Motorola, Inc. Techniques for improving channel quality estimates in wireless communication systems
US8270500B2 (en) * 2007-12-10 2012-09-18 Telefonaktiebolaget L M Ericsson (Publ) Method of selecting a modulation and coding scheme based on adjusted channel quality values
US8693366B2 (en) * 2010-02-23 2014-04-08 Kyushu University, National University Corporation Communication system, a slave node, a route making method and a program
US9374191B2 (en) * 2012-05-17 2016-06-21 Apple Inc. Outer loop link adaptation for device resumption

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011032274A1 (en) * 2009-09-15 2011-03-24 Nortel Networks Limited Adaptive modulation and coding scheme adjustment in wireless networks
WO2011104717A1 (en) * 2010-02-28 2011-09-01 Celeno Communications Ltd. Backoff adaptation for digital communication systems with channel quality information

Also Published As

Publication number Publication date
GB2504739B (en) 2015-01-07
GB2504739A (en) 2014-02-12
GB201214185D0 (en) 2012-09-19
EP2883407A2 (en) 2015-06-17
WO2014023963A2 (en) 2014-02-13
US20150201428A1 (en) 2015-07-16

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