WO2010076549A3 - User selection in wireless networks - Google Patents

User selection in wireless networks Download PDF

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Publication number
WO2010076549A3
WO2010076549A3 PCT/GB2009/002768 GB2009002768W WO2010076549A3 WO 2010076549 A3 WO2010076549 A3 WO 2010076549A3 GB 2009002768 W GB2009002768 W GB 2009002768W WO 2010076549 A3 WO2010076549 A3 WO 2010076549A3
Authority
WO
WIPO (PCT)
Prior art keywords
multicast group
subscriber
coding scheme
subscribers
metric
Prior art date
Application number
PCT/GB2009/002768
Other languages
French (fr)
Other versions
WO2010076549A2 (en
Inventor
Heng Tze Chieng
Chor Min Tan
Huan Len Chan
Original Assignee
British Telecommunications Public Limited Company
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 British Telecommunications Public Limited Company filed Critical British Telecommunications Public Limited Company
Publication of WO2010076549A2 publication Critical patent/WO2010076549A2/en
Publication of WO2010076549A3 publication Critical patent/WO2010076549A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • 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
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0093—Point-to-multipoint

Landscapes

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

Abstract

A method is proposed to manage subscriber terminals within an multicast group in a manner that optimises bandwidth utilisation whilst maintaining the quality of service provided to each subscriber. In particular, whereβ subscriber terminals experience different channel conditions, certain restrictions would normally be imposed on the modulation and coding scheme used to broadcast to the subscriber terminals. A metric is determined which indicates how much subscribers in an multicast group might have to downgrade the coding scheme by if a new subscriber terminal is admitted to the group or if any existing subscriber terminal experiences different channel conditions. This metric, referred to as a capability factor, is compared to a threshold to determine which subscribers to allow into the multicast group and which to deny. An associated modulation and coding scheme can also be determined for the resulting multicast group.
PCT/GB2009/002768 2008-12-31 2009-11-27 User selection in wireless networks WO2010076549A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI20085391 2008-12-31
MYPI20085391 2008-12-31

Publications (2)

Publication Number Publication Date
WO2010076549A2 WO2010076549A2 (en) 2010-07-08
WO2010076549A3 true WO2010076549A3 (en) 2011-01-20

Family

ID=41666565

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/002768 WO2010076549A2 (en) 2008-12-31 2009-11-27 User selection in wireless networks

Country Status (1)

Country Link
WO (1) WO2010076549A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154660A2 (en) * 2000-05-12 2001-11-14 NTT DoCoMo, Inc. Rendering multicast service with sufficient reception quality to wireless terminals
US20030112778A1 (en) * 2001-12-19 2003-06-19 Lundby Stein A. Efficient multi-cast broadcasting for packet data systems
EP1534039A2 (en) * 2003-11-19 2005-05-25 Samsung Electronics Co., Ltd. Apparatus and method for transmitting and receiving common control information in a wireless communication system
EP1986365A1 (en) * 2007-04-27 2008-10-29 Research In Motion Limited Slow adaptation of modulation and coding for packet transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154660A2 (en) * 2000-05-12 2001-11-14 NTT DoCoMo, Inc. Rendering multicast service with sufficient reception quality to wireless terminals
US20030112778A1 (en) * 2001-12-19 2003-06-19 Lundby Stein A. Efficient multi-cast broadcasting for packet data systems
EP1534039A2 (en) * 2003-11-19 2005-05-25 Samsung Electronics Co., Ltd. Apparatus and method for transmitting and receiving common control information in a wireless communication system
EP1986365A1 (en) * 2007-04-27 2008-10-29 Research In Motion Limited Slow adaptation of modulation and coding for packet transmission

Also Published As

Publication number Publication date
WO2010076549A2 (en) 2010-07-08

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