Integrated wireless distribution and mesh backhaul networks

• US 7,164,667 B2
• Filed: 06/28/2002
• Issued: 01/16/2007
• Est. Priority Date: 06/28/2002
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: BelAir Networks Inc (Telefonaktiebolaget LM Ericsson)
• Inventors: Rayment, Stephen G., Herscovich, Bernard
• Primary Examiner(s): Pezzlo; John
• Application Number:
  US10/183,730
• Publication Number:
  US 20040001442A1
• Time in Patent Office: 1,663 Days
• Field of Search: 370352-356, 370/400, 370/401, 370/328, 370/329, 370/278, 370/293, 370/230
• US Class Current: 370/329
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/124 using a combination of metrics
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 40/06 based on characteristics of available antennas
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 84/00 Network topologies

Abstract

Networks, devices and methods related to wireless networking. A wireless network using nodes that perform both distribution and backhaul functions is provided. These nodes constitute the key elements of a wireless network that would be deployed and controlled by a wireless network operator. Each node contains a distribution wireless module which is wirelessly coupled to the wireless end user device using a point to multipoint scheme. Also integrated into each node is at least one backhaul wireless module with a directional wireless antenna. Each backhaul wireless module communicates by way of a point to point wireless link with the backhaul module of one other node. The nodes in the wireless network are interconnected to form a mesh backhaul network. Because of the nature of a mesh network, data traffic can be routed around obstacles that may prevent line of site links. Furthermore, the mesh network allows dynamic routing of data traffic to avoid congestion points or downed links in the network.

Claims

1. A device for receiving and transmitting at least one wireless signal, the device comprising:

at least one wireless backhaul module for communicating with at least one node in a wireless network;

a wireless distribution module for communicating with at least one wireless end user device,

wherein the device receives said at least one wireless signal from said at least one node by way of the at least one backhaul module and transmits at least a portion of at least one of said at least one wireless signal to either,

another node in the wireless network by way of the at least one backhaul module, or;

to said at least one end user device by way of the wireless distribution module and the or each wireless backhaul module communicates with a single node in the wireless network at any one time.

2. A device according to claim 1 wherein the device further comprises:

at least two backhaul modules; and

a switch/router module for routing traffic between different modules in said device said traffic being extracted from said at least one wireless signal.

3. A device according to claim 2 wherein the device further comprises at least one network interface module for communicating with another network.

4. A device according to claim 1 wherein the or each wireless backhaul module communicates with a single node in the wireless network at any one time using a point to point wireless link.

5. A device according to claim 1 wherein the or each wireless backhaul module has a dedicated antenna for a point to point connection with another node in the wireless network.

6. A device according to claim 5 wherein the dedicated antenna has a beamwidth of about 15–

60 degrees.

7. A device according to claim 1 wherein the wireless distribution module communicates with a plurality of wireless end user devices.

8. A device according to claim 1 wherein said device utilizes time-varying information to route traffic in said wireless network.

9. A device according to claim 8 wherein for the or each backhaul module, said time-varying information is derived from bit rate information related to a link between said the or each backhaul module and the single node.

10. A device according to claim 8 wherein for the or each backhaul module, said time-varying information is derived from link utilization information related to a utilization of a link between said the or each backhaul module and the single node.

11. A device according to claim 1 wherein for the or each wireless backhaul module, said device negotiates with said single node to determine transmission parameters between said device and said single node.

12. A device for receiving and transmitting at least one wireless signal, the device comprising:

at least two wireless backhaul modules for communicating with at least two nodes in a wireless network;

a wireless distribution module for communicating with at least one wireless end user device,

a switch/router module for routing traffic between different modules in said device said traffic being extracted from said at least one wireless signal,

wherein the device receives said at least one wireless signal from said at least one node by way of the at least one baokhaul module and transmits at least a portion of at least one of said at least one wireless signal to either,

another node in the wireless network by way of the at least one backhaul module, or;

to said at least one end user device by way of the wireless distribution module and

the or each wireless backhaul module communicates with a single node in the wireless network at any one time.

13. A device according to claim 12 wherein the at least two backhaul modules are time synchronized with a framing signal such that the timing of transmissions from any backhaul module in the device is based on said framing signal.

14. A device for receiving and transmitting at least one wireless signal in a wireless network, the device comprising:

at least one wireless backhaul module for communicating with at least one node in said wireless network;

a switch/router module for routing traffic between different modules in said device, said traffic being extracted from said at least one wireless signal;

at least one network interface module for communicating with another network;

wherein said device receives said at least one wireless signal from said at least one node by way of the at least one backhaul module and transmits at least a portion of at least one of said at least one wireless signal to a destination selected from a group comprising;

another node in the wireless network by way of the at least one backhaul module;

said another network by way of the at least one network interface module;

and wherein the or each wireless backhaul module communicates with a single node in the wireless network at any one time.

15. A device according to claim 14 wherein said device further comprises a wireless distribution module for communicating with at least one wireless end user device.