Source: http://www.google.com/patents/US7974299?dq=5,893,120
Timestamp: 2017-11-19 09:05:03
Document Index: 748319439

Matched Legal Cases: ['Application No. 60', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 16', 'art 16', 'art 11', 'art 11']

Patent US7974299 - Methods and apparatus for switching transmission channels - Google Patents
Methods and apparatus for switching transmission channels that include monitoring a number of packets within a transmitter buffer of a transmitter, determining that the number of packets within the transmitter buffer exceeds a pre-determined threshold, and changing a transmission channel used by the...http://www.google.com/patents/US7974299?utm_source=gb-gplus-sharePatent US7974299 - Methods and apparatus for switching transmission channels
Publication number US7974299 B1
Application number US 11/945,165
Also published as US8542698, US8861541
Publication number 11945165, 945165, US 7974299 B1, US 7974299B1, US-B1-7974299, US7974299 B1, US7974299B1
Inventors Raja Banerjea, Milind Kopikare
Patent Citations (5), Non-Patent Citations (11), Referenced by (15), Classifications (17), Legal Events (2)
Methods and apparatus for switching transmission channels
US 7974299 B1
Methods and apparatus for switching transmission channels that include monitoring a number of packets within a transmitter buffer of a transmitter, determining that the number of packets within the transmitter buffer exceeds a pre-determined threshold, and changing a transmission channel used by the transmitter for transmission based at least upon the number of packets within the transmitter buffer exceeding a pre-determined threshold.
14. The apparatus of claim 10, wherein the unicast message includes an indication of an amount of time to lapse prior to changing the current transmission channel.
The present application claims priority to U.S. Patent Application No. 60/867,264, filed Nov. 27, 2006, entitled “Enhanced Channel Selection Mechanism,” the entire disclosure of which is hereby incorporated by reference in its entirety for all purposes.
The present invention relates to an enhanced channel selection mechanism, and more particularly, to an enhanced channel selection mechanism for ensuring switching between transmission channels within a wireless communication network seamlessly and with minimal disruption of reception of a transmitted signal.
Multimedia transmission, especially video distribution into one's home, requires high bandwidth and low latency. Historically, wireless communication systems have not been able to meet such requirements. The IEEE 802.11n provides a high band width transmission protocol. However, this protocol allows for a maximum channel unavailability duration of 200 milliseconds. Such lack of channel availability may be caused due to interference, a deep fade because of reflections, etc.
The present invention provides a method that includes monitoring a number of packets within a transmitter buffer of a transmitter, determining that the number of packets within the transmitter buffer exceeds a predetermined threshold, and changing a transmission channel used by the transmitter for transmission based at least upon the number of packets within the transmitter buffer exceeding a predetermined threshold.
The subscriber stations 140, 142, 144, 146, and 148 may use a variety of modulation techniques such as, for example, spread spectrum modulation (e.g., direct sequence code division multiple access (DS-CDMA) and/or frequency hopping code division multiple access (FH-CDMA)), time-division multiplexing (TDM) modulation, frequency-division multiplexing (FDM) modulation, orthogonal frequency-division multiplexing (OFDM) modulation, multi-carrier modulation (MDM), and/or other suitable modulation techniques to communicate via wireless links. In one example, the laptop computer 140 may operate in accordance with suitable wireless communication protocols that require very low power such as Bluetooth®, ultra-wide band (UWB), and/or radio frequency identification (RFID) to implement the WPAN 110. In particular, the laptop computer 140 may communicate with devices associated with the WPAN 110 such as the video camera 142 and/or the printer 144 via wireless links.
Referring to FIG. 2, a transmission system 200, in accordance with various embodiments of the present invention, is schematically illustrated. As may be seen, the system 200 includes a transmitter 202 and a receiver 204. Both the transmitter 202 and the receiver 204 include an antenna 206T and 206R. The transmitter 202 includes a transmitter buffer 208, while the receiver 204 includes a receiver buffer 210. A video source 212 is communicatively coupled with the transmitter buffer 208, while a video player 214 is communicatively coupled with the receiver buffer 210. Those skilled in the art will understand that other “information” or “data” sources may be used, in place of video source 212, and that likewise, other types of “information” or “data” processors may be used, in place of video player 214. The video source 212 and video player 214 are being used for the description of this exemplary embodiment for clarity and simplicity, and the present invention is not to be regarded as limited in any way because of this.
US7443830 * Apr 11, 2002 Oct 28, 2008 Ericsson Ab Method for data communication and controlling device therefor
1 802.11h IEEE Standard for Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, Amendment 5: Spectrum and Transmit Power Management Extensions in the 5 GHz band in Europe, 2003, pp. 1-75, The Institute of Electrical and Electronics Engineers, Inc., New York, NY.
2 802.11h IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, Amendment 5: Spectrum and Transmit Power Management Extensions in the 5 GHz band in Europe, 2003, pp. 1-75, The Institute of Electrical and Electronics Engineers, Inc., New York, NY.
3 802.11k IEEE Draft Standard for Information Technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specification requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, Amendment: Radio Resource Measurement, LAN/MAN Standards Committee of the IEEE Computer Society, Jan. 2007, pp. 1-194, IEEE, New York, NY.
4 802.11k IEEE Draft Standard for Information Technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specification requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, Amendment: Radio Resource Measurement, LAN/MAN Standards Committee of the IEEE Computer Society, Jan. 2007, pp. 1-194, IEEE, New York, NY.
5 802.11k-2008 IEEE Standard for Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specification, Amendment 1: Radio Resource Measurement of Wireless LANs, IEEE Computer Society, Jun. 12, 2008, pp. 1-244, IEEE, New York, NY.
6 802.11k-2008 IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specification, Amendment 1: Radio Resource Measurement of Wireless LANs, IEEE Computer Society, Jun. 12, 2008, pp. 1-244, IEEE, New York, NY.
7 802.16 IEEE Standard for Local and metropolitan area networks, Part 16: Air Interface for Fixed Broadband Wireless Access Systems, IEEE Computer Society and the IEEE Microwave Theory and Techniques Society, 2001, pp. 1-349, The Institute of Electrical and Electronics Engineers, Inc., New York, NY.
8 802.16e IEEE Standard for Local and metropolitan area networks, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems, Amendment 2: Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands and Corrigendum 1, IEEE Computer Society and the IEEE Microwave Theory and Techniques Society, 2005, pp. 1-864, IEEE, New York, NY.
9 IEEE 802.11k D5.0 Draft Standard for Information technology-Telecommunications and Information Exchange Between Systems-Local and Metropolitan Area Networks-Specific Requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, Amendment 1: Radio Resource Measurement, IEEE Computer Society, Aug. 2006, pp. 1-178, IEEE, New York, NY.
10 IEEE 802.11k D5.0 Draft Standard for Information technology—Telecommunications and Information Exchange Between Systems—Local and Metropolitan Area Networks—Specific Requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, Amendment 1: Radio Resource Measurement, IEEE Computer Society, Aug. 2006, pp. 1-178, IEEE, New York, NY.
11 Syed Aon Mujtaba, 802.11 IEEE Wireless LANs TGn Sync Proposal Technical Specification, May 18, 2005, pp. 1-131, Allentown, PA.
US8542698 * Jul 1, 2011 Sep 24, 2013 Marvell International Ltd. Methods and apparatus for switching transmission channels
US8861541 * Sep 19, 2013 Oct 14, 2014 Marvell International Ltd. Methods and apparatus for scanning transmission channels
US9014164 * Jun 20, 2011 Apr 21, 2015 Lg Electronics Inc. Method and apparatus for identifying channel information in a wireless network
US9326256 Jan 23, 2015 Apr 26, 2016 Lg Electronics Inc. Method and apparatus for identifying channel information in a wireless network
US9596665 Mar 18, 2016 Mar 14, 2017 Lg Electronics Inc. Method and apparatus for providing channel information in a wireless network
US9743432 * Sep 22, 2014 Aug 22, 2017 Qualcomm Incorporated LTE-U uplink waveform and variable multi-subframe scheduling
US20140003361 * Jun 20, 2011 Jan 2, 2014 Jaehyung Song Method and apparatus for identifying channel information in a wireless network
US20150085797 * Sep 22, 2014 Mar 26, 2015 Qualcomm Incorporated Lte-u uplink waveform and variable multi-subframe scheduling
US20150312861 * Apr 25, 2014 Oct 29, 2015 Aruba Networks Inc. Method and system for device aware power save
Cooperative Classification H04L43/16, H04L43/0876, H04W36/16, H04L47/14, H04L47/29, H04W40/04, H04W28/14, H04W24/02, H04L49/90, H04L47/122
European Classification H04W28/14, H04L47/12A, H04L49/90, H04L47/14, H04L47/29
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BANERJEA, RAJA;KOPIKARE, MILIND;SIGNING DATES FROM 20071120 TO 20071126;REEL/FRAME:020154/0542
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARVELL SEMICONDUCTOR, INC.;REEL/FRAME:020154/0569