WO2019182488A3 - Scheduling in a cellular communication system - Google Patents

Scheduling in a cellular communication system Download PDF

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Publication number
WO2019182488A3
WO2019182488A3 PCT/SE2018/050278 SE2018050278W WO2019182488A3 WO 2019182488 A3 WO2019182488 A3 WO 2019182488A3 SE 2018050278 W SE2018050278 W SE 2018050278W WO 2019182488 A3 WO2019182488 A3 WO 2019182488A3
Authority
WO
WIPO (PCT)
Prior art keywords
communication system
cellular communication
wts
cqis
bler
Prior art date
Application number
PCT/SE2018/050278
Other languages
French (fr)
Other versions
WO2019182488A2 (en
Inventor
Johan ZHANG
Yu Wang
Chenguang Lu
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to PCT/SE2018/050278 priority Critical patent/WO2019182488A2/en
Publication of WO2019182488A2 publication Critical patent/WO2019182488A2/en
Publication of WO2019182488A3 publication Critical patent/WO2019182488A3/en

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
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • 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
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • 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
    • 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
    • H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
    • 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 signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • 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

Landscapes

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

Abstract

A method for scheduling in a cellular communication system is presented. The method is performed in a base station, BS, (2) of the cellular communication system (4), and comprises calculating (S110) a block error rate, BLER, key performance indicator, KPI, counter as the average value of aggregated BLER of a plurality of wireless terminals, WTs, (1) connected to the BS over a period of time, determining (S120) an adjustment for received channel quality indications, CQIs, in dependence on the calculated BLER KPI counter, receiving (S130) a plurality of CQIs from the plurality of WTs; and 0 determining (S140) an initial choice of modulation and coding schemes, MCS, used by the BS to the plurality of WTs in dependence on the determined adjustment and the received plurality of CQIs.
PCT/SE2018/050278 2018-03-20 2018-03-20 Scheduling in a cellular communication system WO2019182488A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2018/050278 WO2019182488A2 (en) 2018-03-20 2018-03-20 Scheduling in a cellular communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2018/050278 WO2019182488A2 (en) 2018-03-20 2018-03-20 Scheduling in a cellular communication system

Publications (2)

Publication Number Publication Date
WO2019182488A2 WO2019182488A2 (en) 2019-09-26
WO2019182488A3 true WO2019182488A3 (en) 2019-12-26

Family

ID=67770556

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2018/050278 WO2019182488A2 (en) 2018-03-20 2018-03-20 Scheduling in a cellular communication system

Country Status (1)

Country Link
WO (1) WO2019182488A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130028307A1 (en) * 2009-09-15 2013-01-31 Research In Motion Limited Adaptive modulation and coding scheme adjustment in wireless networks
US20150117321A1 (en) * 2013-10-30 2015-04-30 Telefonaktiebolaget L M Ericsson (Publ) Outer-loop adjustment for wireless communication link adaptation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130028307A1 (en) * 2009-09-15 2013-01-31 Research In Motion Limited Adaptive modulation and coding scheme adjustment in wireless networks
US20150117321A1 (en) * 2013-10-30 2015-04-30 Telefonaktiebolaget L M Ericsson (Publ) Outer-loop adjustment for wireless communication link adaptation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DURAN A ET AL: "Self-Optimization Algorithm for Outer Loop Link Adaptation in LTE", IEEE COMMUNICATIONS LETTERS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 19, no. 11, 1 November 2015 (2015-11-01), pages 2005 - 2008, XP011589520, ISSN: 1089-7798, [retrieved on 20151109], DOI: 10.1109/LCOMM.2015.2477084 *
JIAMO JIANG ET AL: "Measurement-based optimizing algorithm for modulation and coding scheme selection in downlink LTE self-organizing networks", WIRELESS INFORMATION TECHNOLOGY AND SYSTEMS (ICWITS), 2012 IEEE INTERNATIONAL CONFERENCE ON, IEEE, 11 November 2012 (2012-11-11), pages 1 - 4, XP032312437, ISBN: 978-1-4673-0947-9, DOI: 10.1109/ICWITS.2012.6417722 *

Also Published As

Publication number Publication date
WO2019182488A2 (en) 2019-09-26

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