Method of operation for a three-dimensional, wireless network

• US 7,715,336 B2
• Filed: 07/15/2003
• Issued: 05/11/2010
• Est. Priority Date: 02/14/2003
• Status: Active Grant

• Current Assignee: Sony Interactive Entertainment LLC (Sony Group Corp.)
• Original Assignee: OnLive Incorporated
• Inventors: Perlman, Stephen G.
• Primary Examiner(s): Mills; Donald L
• Application Number:
  US10/619,919
• Publication Number:
  US 20050174960A1
• Time in Patent Office: 2,492 Days
• Field of Search: 370/277, 370/279, 370/293, 370/310.2, 370/315, 370319-322, 370/326, 370/492, 370/501, 455/11.1, 455/13.1, 455/15, 455/20, 439/527, 439/535, 439/536
• US Class Current: 370/321
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

A method of operation for wireless transmission of data to one or more destination devices across a network that includes a plurality of access points disposed about a building, each access point having a first transmission range of maximum bandwidth and a second transmission range of signal interference, the access points being arranged in a topology wherein each access point is spaced-apart from a nearest neighboring access point by a first distance less than the first transmission range. The data is transmitted by a first access point; then it is repeated by a series of additional access points that extends across the topology. Re-transmission of the data occurs in a manner wherein any pair of access points transmitting on the same channel is separated by a distance greater than the second transmission range. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Claims

1. A computer-implemented method of operation for a wireless local area network (WLAN) that includes a repeater topology, the method comprising:

detecting a conflict on a channel of a frequency band in a branch of the repeater topology; and

adapting the WLAN to the conflict by re-configuring a first repeater in the branch to re-use a certain channel already in use by a neighboring repeater in the repeater topology, the first repeater and the neighboring repeater being physically obstructed from a line-of-sight view, the first repeater being re-configured to transmit data at a data throughput of at least 11 Mbps on the certain channel during even time intervals and receive data at the data throughput on the certain channel during odd time intervals, the neighboring repeater transmitting during the odd time intervals and receiving during the even time intervals.

2. The computer-implemented method of claim 1 wherein a next successive repeater in the repeater topology receives data on the certain channel from the first repeater and re-transmits the data on a different channel.

3. The computer-implemented method of claim 1 further comprising monitoring signal quality of the certain channel during data transmissions.

4. The computer-implemented method of claim 1 wherein the conflict arises from operation of a wireless device not connected to the WLAN.

5. The computer-implemented method of claim 1 wherein the detecting and adapting steps are performed by at least one processor of the WLAN.

6. The computer-implemented method of claim 1 wherein the detecting and adapting steps are performed by at least one processor of an access point that functions as a data source.

7. The computer-implemented method of claim 1 wherein the frequency band comprises a 5 GHz frequency band.

8. The computer-implemented method of claim 1 wherein the frequency band comprises a 2.4 GHz frequency band.

9. A computer-readable memory encoded with a computer program for configuring a wireless network that includes a repeater topology, when executed, the computer program being operable to:

detect a conflict on a channel of a frequency band in a branch of the repeater topology operating at a data throughput of at least 11 Mbps; and

adapt the wireless network to the conflict by re-configuring a first repeater in the branch to re-use a certain channel already in use by a neighboring repeater in the repeater topology, the first repeater and the neighboring repeater being physically obstructed from a line-of-sight view, the first repeater being re-configured to transmit data at the data throughput on the certain channel during even time intervals and receive data at the data throughput on the certain channel during odd time intervals, the neighboring repeater transmitting during the odd time intervals and receiving during the even time intervals.

10. The computer-readable memory of claim 9 wherein a next successive repeater in the repeater topology receives data on the certain channel from the first repeater and re-transmits the data on a different channel.

11. The computer-readable memory of claim 9 wherein the conflict arises from operation of a wireless device not connected to the wireless network.

12. The computer-implemented method of claim 9 wherein the frequency band comprises a 5 GHz frequency band.

13. The computer-implemented method of claim 9 wherein the frequency band comprises a 2.4 GHz frequency band.