Dynamic wireless backhaul

• US 7,688,835 B2
• Filed: 03/15/2006
• Issued: 03/30/2010
• Est. Priority Date: 03/15/2006
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Muthuswamy, Sivakumar, Steinberg, Paul D., Bi, Hao, Classon, Brian K., Kotzin, Michael D.
• Primary Examiner(s): TRAN, PHUC H
• Application Number:
  US11/376,011
• Publication Number:
  US 20070217373A1
• Time in Patent Office: 1,476 Days
• Field of Search: None
• US Class Current: 370/401
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0625 Transmitter arrangements
• CPC Class Codes: H04L 1/0631 Receiver arrangements
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 2001/0092 Error control systems characterised by the topology of the transmission link
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 92/12 between access points and access point controllers

Abstract

A communication system and a method of communicating data. A first backhaul site can be dynamically selected from a plurality of backhaul sites that are each configured to wirelessly communicate with an access point. A controller can dynamically configure a transmission parameter used to communicate a first backhaul data stream between the access point and the first backhaul site. The first backhaul data stream can be derived from a source data stream and can be wirelessly communicated between the access point and the first backhaul site. A second backhaul site also can be selected. A second backhaul data stream also can be derived from the source data stream and wirelessly communicated between the access point and the second backhaul site. The first and second backhaul data streams can be combined.

Claims

1. A method of communicating data comprising:

from a plurality of backhaul sites that are each configured to wirelessly communicate with a particular access point, dynamically selecting at least a first backhaul site;

dynamically configuring at least one transmission parameter used to communicate a first backhaul data stream between the access point and the first backhaul site, wherein the at least one transmission parameter is selected from a group consisting of a transmit power, a data encoding scheme, a modulation scheme, and a transmission protocol;

dynamically selecting at least a second backhaul site;

deriving the first backhaul data stream from a source data stream;

deriving at least a second backhaul data stream from the source data stream;

wirelessly communicating the first backhaul data stream between the access point and the first backhaul site;

wirelessly communicating the second backhaul data stream between the access point and the second backhaul site; and

combining the first backhaul data stream with the second backhaul data stream.

2. The method according to claim 1, wherein:

deriving the first backhaul data stream comprises generating the first backhaul data stream such that the first backhaul data stream is equal to the source data stream;

deriving the second backhaul data stream comprises generating the second backhaul data stream such that the second backhaul data stream is equal to the source data stream; and

combining the first backhaul data stream with the second backhaul data stream comprises soft combining the first backhaul data stream with the second backhaul data stream to generate a data stream that replicates of the source data stream.

3. The method according to claim 2, further comprising assigning to at least a portion of each of the first backhaul data stream and the second backhaul data stream a signal qualifier that indicates an amount of emphases to place on each of the respective data streams.

4. The method according to claim 1, wherein:

deriving the first backhaul data stream comprises generating the first backhaul data stream such that the first backhaul data stream is equal to a first portion of the source data stream;

deriving the second backhaul data stream comprises generating the second backhaul data stream such that the second backhaul data stream is equal to a second portion of the source data stream; and

combining the first backhaul data stream with the second backhaul data stream comprises merging the first backhaul data stream with the second backhaul data stream to generate a data stream that replicates the source data stream.

5. The method according to claim 4, further comprising dynamically selecting a size of the first backhaul data stream.

6. The method according to claim 1, wherein wirelessly communicating the first backhaul data stream comprises transmitting the first backhaul data stream in a frequency spectrum in which the access point communicates with a wireless communication device.

7. The method according to claim 6, wherein wirelessly communicating the second backhaul data stream comprises transmitting the second backhaul data stream in the frequency spectrum in which the access point communicates with the wireless communication device.

8. A communication system comprising:

an access point;

a first backhaul site configured to wirelessly communicate with the access point;

a controller that dynamically configures at least one transmission characteristic of a backhaul data stream communicated between the access point and the first backhaul site, wherein the transmission characteristic is selected from a group consisting of a transmit power, a data encoding scheme, a modulation scheme, and a transmission protocol;

at least a second backhaul site configured to wirelessly communicate with the access point; and

a combination/distribution site communicatively linked to the first and second backhaul sites, the combination/distribution site combining a first backhaul data stream with a second backhaul data stream.

9. The communication system of claim 8, wherein:

the first backhaul data stream is equal to the source data stream;

the second backhaul data stream is equal to the source data stream; and

the combination/distribution site soft combines the first backhaul data stream with the second backhaul data stream to generate a data stream that replicates the source data stream.

10. The communication system of claim 9, wherein the controller further assigns to at least a portion of each of the first backhaul data stream and the second backhaul data stream a signal qualifier that indicates an amount of emphases to place on each of the respective data streams.

11. The communication system of claim 8, wherein:

the first backhaul data stream is equal to a first portion of the source data stream;

the second backhaul data stream is equal to a second portion of the source data stream; and

the combination/distribution site merges the first backhaul data stream with the second backhaul data stream to generate a data stream that replicates the source data stream.

12. The communication system of claim 11, wherein the controller dynamically selects a size of the first backhaul data stream.

13. The communication system of claim 8, wherein the access point wirelessly transmits the first backhaul data stream in a frequency spectrum in which the access point communicates with a wireless communication device.

14. The communication system of claim 13, wherein the access point wirelessly transmits the second backhaul data stream in the frequency spectrum in which the access point communicates with the wireless communication device.