Integrated self-optimizing multi-parameter and multi-variable point to multipoint communication system

• US 8,432,817 B2
• Filed: 03/30/2007
• Issued: 04/30/2013
• Est. Priority Date: 12/30/1999
• Status: Expired due to Fees

• Current Assignee: Monument Bank of Intellectual Property, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Quarterhill Inc. (f/k/a Wi-LAN Inc.)
• Inventors: Majidi-Ahy, Reza, Hakim, Joseph, Varma, Subir
• Primary Examiner(s): Moore, Jr., Michael J.
• Assistant Examiner(s): JONES, PRENELL P
• Application Number:
  US11/731,732
• Publication Number:
  US 20070211646A1
• Time in Patent Office: 2,223 Days
• Field of Search: 370/252, 370/433, 370/469, 370/333, 370/338, 370/349, 370/465, 370/392, 370/395, 370/347, 370/278, 370/335, 370/401, 370/393, 455/406, 455/67, 455/422, 455/446, 455/456, 455/522, 709/228, 709/249, 709/224
• US Class Current: 370/252
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0007 by modifying the frame length
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0015 characterised by the adaptation strategy
• CPC Class Codes: H04L 1/1816 with retransmission of the same, encoded, message
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04W 28/0252 per individual bearer or channel dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The invention provides a method and system for adaptive point to multipoint wireless communication. The wireless physical layer and the wireless media-access-control (MAC) layer collectively include a set of parameters, which are adaptively modified by a base station controller for communication with a plurality of customer premises equipment. The base station controller adjusts communication with each customer premises equipment individually and adaptively in response to changes in characteristics of communication, including physical characteristics, amount of communication traffic, and nature of application for the communication traffic.

Claims

1. A method of transmitting data in a point to multipoint wireless network including a base station with two or more antennas and one or more customer premises equipment (CPE), each with two or more antennas, the method comprising:

maintaining a set of parameters for wireless communication between the base station and each CPE;

establishing wireless communication between the base station and the one or more CPEs using the respective set of parameters; and

independently adapting the set of parameters for use with each CPE based on changing conditions in the wireless communication between the base station and the respective CPE;

wherein adapting the set of parameters includes

selecting an antenna selection parameter to indicate how the base station transmits a communication signal from the two or more antennas of the base station to the two or more antennas of the respective CPE and

selecting a power level and modulation type pair for transmission from the base station to the CPE.

2. A method as claimed in claim 1, wherein selecting the antenna selection parameter includes selecting that the base station will transmit simultaneously a plurality of portions of the communication signal from at least two of the two or more antennas of the base station to at least two of the two or more receive antennas of the CPE.

3. A method as claimed in claim 1, wherein the set of parameters further includes a channel selection parameter.

4. A method as claimed in claim 3, wherein adapting the channel selection parameter comprises selecting a channel frequency for transmission of a communication signal from the base station to the CPE.

5. A method as claimed in claim 3, wherein adapting the channel selection parameter comprises selecting at least two channel frequencies, each for simultaneous transmission of a portion of the communication signal from the base station to the CPE.

6. A method as claimed in claim 3, wherein adapting the channel selection parameter comprises selecting at least two channel frequencies for transmitting successively a portion of the communication signal from the base station to the CPE.

7. A method as claimed in claim 1, wherein the adapting the set of parameters further includes selecting a channel type for transmission from the base station to one or more CPEs.

8. A method as claimed in claim 7, wherein the channel type includes one of a FDMA, CDMA, TDMA transmission separation technique and combinations thereof.

9. A method as claimed in claim 1, wherein the set of parameters further includes one or more of an error code type, symbol rate, and equalization technique.

10. A method as claimed in claim 1, wherein the power level and modulation type pair is determined as an optimal pair rather than optimal individual values.

11. A method as claimed in claim 1, wherein the set of parameters further includes one or more media access control (MAC) parameters.

12. A method as claimed in clams 11, wherein the MAC parameters include one or more of message size, acknowledgements and retransmission, and TDD duty cycle.

13. A method of transmitting data in a point to multipoint wireless network including a base station with two or more antennas and one or more customer premises equipment (CPE), each with two or more antennas, the method comprising:

maintaining a set of parameters for wireless communication between the base station and each CPE, the set of parameters including an antenna selection parameter;

establishing wireless communication between the base station and the one or more CPEs using the respective set of parameters; and

independently adapting the set of parameters for use with each CPE based on changing conditions in the wireless communication between the base station and the respective CPE;

wherein adapting the set of parameters includes

selecting the antenna selection parameter to indicate how the base station transmits a communication signal from the two or more antennas of the base station to the two or more antennas of the respective CPE and

wherein selecting the antenna selection parameter includes selecting that the base station will transmit successively a portion of the communication signal from one antenna of the base station and a subsequent portion of the communication signal from another antenna of the base station to the respective CPE.

14. A method as claimed in claim 13, wherein the set of parameters further includes a power level for transmission from the base station to the CPE.

15. A method of transmitting data in a point to multipoint wireless network, wherein a base station communicates with a plurality of customer premises equipments (CPEs), the method comprising:

grouping a first subset of the CPEs in a first group;

determining a first set of communication parameters, parameters in the first set being determined as optimal for the first group;

establishing wireless communication between the base station and the CPEs of the first group using the first set of communication parameters for each of the CPEs of the first group;

wherein the base station includes two or more antennas and each CPE has two or more antennas; and

wherein determining the first set of communication parameters further comprises

selecting an antenna selection parameter which indicates a transmit antenna for the base station and a receive antenna for a CPE and

choosing to transmit successively a portion of a communication signal from one antenna of the base station and a subsequent portion of the communication signal from another antenna of the base station to the CPE.

16. A method as claimed in claim 15, further comprising

grouping a second subset of the CPEs in a second group;

determining a second set of communication parameters, parameters in the second set being determined as optimal for the second group; and

establishing wireless communication between the base station and the CPEs of the second group using the second set of communication parameters for each of the CPEs of the second group.

17. A method as claimed in claim 15, wherein a parameter of the first set of communication parameters is one value for communication from the base station to the CPEs and is a different value for communication from the CPEs and the base station.

18. A method as claimed in claim 15, wherein selecting the antenna selection parameter includes selecting transmitting simultaneously a plurality of portions of a communication signal from at least two of the two or more antennas of the base station to at least two of the two or more antennas of the CPE.

19. A method as claimed in claim 15, wherein the antenna selection parameter is selected to be optimal for the first group.

20. A method as claimed in claim 16, wherein the first set of communication parameters and the second set of communication parameters are determined for optimal communication between the base station and the CPEs of both groups.

21. A method as claimed in claim 16, further comprising

obtaining first information regarding characteristics of the wireless communication between the base station and the CPEs of the first group;

and

obtaining second information regarding characteristics of the wireless communication between the base station and the CPEs of the second group,

wherein determining the first set of communication parameters utilizes the first information and the second information.

22. A method as claimed in claim 21, wherein determining the second set of communication parameters utilizes the first information and the second information.