WO2003107673A1 - Dynamically adjusting data rate of wireless communications - Google Patents

Dynamically adjusting data rate of wireless communications Download PDF

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Publication number
WO2003107673A1
WO2003107673A1 PCT/CA2003/000868 CA0300868W WO03107673A1 WO 2003107673 A1 WO2003107673 A1 WO 2003107673A1 CA 0300868 W CA0300868 W CA 0300868W WO 03107673 A1 WO03107673 A1 WO 03107673A1
Authority
WO
WIPO (PCT)
Prior art keywords
data rate
packets
channel
packet
adjustment feedback
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/CA2003/000868
Other languages
English (en)
French (fr)
Inventor
James Girardeau
James R. Kelton
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.)
ViXS Systems Inc
Original Assignee
ViXS Systems Inc
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 ViXS Systems Inc filed Critical ViXS Systems Inc
Priority to JP2004514345A priority Critical patent/JP2005530416A/ja
Priority to DE60316805T priority patent/DE60316805T2/de
Priority to AU2003232554A priority patent/AU2003232554A1/en
Priority to CN038140039A priority patent/CN1663274B/zh
Priority to EP03759796A priority patent/EP1514421B1/en
Publication of WO2003107673A1 publication Critical patent/WO2003107673A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/637—Control signals issued by the client directed to the server or network components
    • H04N21/6373—Control signals issued by the client directed to the server or network components for rate control, e.g. request to the server to modify its transmission rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests

Definitions

  • the quality of the wireless communication channel on which the packet was received greatly affects the receiver's ability to accurately recapture the data.
  • the video receiver is able to accurate recapture data from most, if not all, of the packets it receives.
  • the signal to noise ratio decreases, as does the receiver's ability to recapture data from the received packets, as such the packet error rate increases.
  • the client module provides data rate adjustment feedback to a multimedia server of the wireless multimedia system via the wireless transport channel.
  • the data rate may be affected in two ways: first, the data rate is too high for the current characteristics of the channel and thus should be decreased; and second, the data rate is too low for the current characteristics of the channel and should be increased.
  • the processing continues when the multimedia server adjusts the data rate of the data contained in the packets being transported via the wireless transport channel in accordance with the data rate adjustment feedback.
  • the data rate adjustment feedback may contain a variety of information ranging from an increased data rate signal, decreased data rate signal, increased data rate to a specific data rate, decreased the data rate to a specific data rate, and/or an indication of the particular channel characteristics.
  • the client module 22 receives the packets of data 92 via a network interface 78, which includes a radio transceiver.
  • the client interface 76 provides the interface to the particular client and supports the corresponding protocols with the particular client.
  • the processing module 72 may be a single processing device or a plurality of processing devices. Such a processing device may be a microprocessor, micro-controller, digital signal processor, microcomputer, central processing unit, field programmable gate array, programmable logic device, state machine, logic circuitry, analog circuitry, digital circuitry, and or any device that manipulates signals (analog and/or digital) based on operational instructions.
  • the memory 74 may be a single memory device or a plurality of memory devices .
  • Figure 5 illustrates a graph of signal-to-noise ratio over time and data rate over time.
  • the baseband processor 120 may determine the signal strength from the baseband signals received from the RF transceiver 120.
  • the baseband processor 122 provides signal strength indication 132 to the data rate adjustment determination module 128.
  • the baseband processor 122 to determine the signal strength indication 132, may include a signal-to-noise ratio module, receive signal strength indication module, and/or any other mechanism for dete ⁇ nining signal strength with respect to noise and/or interference.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Optical Communication System (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
PCT/CA2003/000868 2002-06-18 2003-06-11 Dynamically adjusting data rate of wireless communications Ceased WO2003107673A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2004514345A JP2005530416A (ja) 2002-06-18 2003-06-11 ワイヤレス通信のデータレートをダイナミックに調整する方法
DE60316805T DE60316805T2 (de) 2002-06-18 2003-06-11 Dynamische einstellung der datenrate bei der drahtlosen kommunikation
AU2003232554A AU2003232554A1 (en) 2002-06-18 2003-06-11 Dynamically adjusting data rate of wireless communications
CN038140039A CN1663274B (zh) 2002-06-18 2003-06-11 动态调节无线通信的数据速率
EP03759796A EP1514421B1 (en) 2002-06-18 2003-06-11 Dynamically adjusting data rate of wireless communications

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/174,371 US7423990B2 (en) 2002-06-18 2002-06-18 Dynamically adjusting data rate of wireless communications
US10/174,371 2002-06-18

Publications (1)

Publication Number Publication Date
WO2003107673A1 true WO2003107673A1 (en) 2003-12-24

Family

ID=29733564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2003/000868 Ceased WO2003107673A1 (en) 2002-06-18 2003-06-11 Dynamically adjusting data rate of wireless communications

Country Status (9)

Country Link
US (1) US7423990B2 (https=)
EP (1) EP1514421B1 (https=)
JP (2) JP2005530416A (https=)
CN (1) CN1663274B (https=)
AT (1) ATE375685T1 (https=)
AU (1) AU2003232554A1 (https=)
DE (1) DE60316805T2 (https=)
TW (1) TWI266509B (https=)
WO (1) WO2003107673A1 (https=)

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EP2060121A4 (en) * 2006-09-05 2011-03-30 Lg Electronics Inc METHOD FOR ADAPTIVE LINK TRANSMISSION OF DATA STREAM IN MOBILE COMMUNICATION SYSTEM
US8379609B2 (en) 2007-03-29 2013-02-19 Vixs Systems, Inc. Multimedia client/server system with adjustable data link rate and range and methods for use therewith

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US20030231655A1 (en) 2003-12-18
CN1663274A (zh) 2005-08-31
JP2010239659A (ja) 2010-10-21
ATE375685T1 (de) 2007-10-15
DE60316805T2 (de) 2008-07-17
EP1514421B1 (en) 2007-10-10
AU2003232554A1 (en) 2003-12-31
TWI266509B (en) 2006-11-11
US7423990B2 (en) 2008-09-09
DE60316805D1 (de) 2007-11-22
TW200400738A (en) 2004-01-01
JP2005530416A (ja) 2005-10-06
EP1514421A1 (en) 2005-03-16
CN1663274B (zh) 2010-05-26

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