Integrated wireless distribution and mesh backhaul networks

• US 8,520,578 B2
• Filed: 09/23/2011
• Issued: 08/27/2013
• Est. Priority Date: 06/28/2002
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: BelAir Networks Inc (Telefonaktiebolaget LM Ericsson)
• Inventors: Rayment, Stephen G., Herscovich, Bernard
• Primary Examiner(s): Pham, Brenda H
• Application Number:
  US13/242,242
• Publication Number:
  US 20120063396A1
• Time in Patent Office: 704 Days
• Field of Search: 370/400, 370/401, 370/402, 370/310, 370/310.2, 370/328, 370/338, 370/349, 370/386
• US Class Current: 370/310.2
• 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

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 wherein 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 wireless network for providing services to a plurality of end users, the network comprising:

a plurality of nodes, each node being wirelessly connected to at least one other corresponding node for communication by way of a dedicated point-to-point link, each node comprising at least two wireless backhaul modules for communicating with the at least one other corresponding node, the plurality of nodes comprising;

a plurality of routing nodes for routing traffic by using at least one wireless signal, wherein at least one routing node further comprises a wireless distribution module for communicating traffic to at least one corresponding wireless end user device, wherein the at least one routing node receives the at least one wireless signal from the at least one other corresponding node by way of the at least two wireless backhaul modules and transmits at least a portion of the at least one wireless signal to the at least one corresponding end user device by way of the wireless distribution module; and

at least one network aggregation node for routing the traffic between the wireless network and another network;

wherein each wireless backhaul module communicates with only a single corresponding node in the wireless network at any one time, and

wherein the wireless backhaul modules of each node are collocated in the node and are configured to minimize interference therebetween.

2. A wireless network according to claim 1 wherein each network aggregation node is coupled to a corresponding core network which provides at least a portion of traffic, the traffic being encoded into the at least one wireless signal for routing to the at least one corresponding end user device.

3. A wireless network according to claim 1 wherein each of the plurality of routing nodes is coupled to at least one other routing node by way of a point-to-point wireless link.

4. A wireless network according to claim 3 wherein the plurality of routing nodes are wirelessly coupled to form a mesh network.

5. A wireless network according to claim 4 wherein the mesh network allows traffic to be routed from one node in the network to another node, the traffic being encoded in the at least one wireless signal.

6. A wireless network according to claim 1 wherein each wireless distribution module wirelessly communicates with a corresponding plurality of wireless end user devices.

10. The wireless network according to any one of claims 1 to 9 wherein the network utilizes time-varying information to route traffic in the wireless network.

11. The wireless network according to claim 10 wherein, for each wireless backhaul module, the time-varying information is derived from bit rate information related to a link between the wireless backhaul module and the single node.

12. The wireless network according to claim 10 wherein, for each backhaul module, the time-varying information is derived from link utilization information related to a utilization of a link between the backhaul module and the single node.

13. The wireless network according to any one of claims 1 to 12 wherein the backhaul modules are time synchronized such that all backhaul modules transmit only during common time intervals.

14. The wireless network according to claim 13 wherein the backhaul modules are time synchronized with a framing signal such that the timing of transmissions from any backhaul module is based on the framing signal.

7. A wireless network for providing services to a plurality of end users, the network comprising:

a plurality of routing nodes for routing traffic by using at least one wireless signal, each routing node being wirelessly coupled to at least one other node;

at least one network aggregation node for routing the traffic between the wireless network and another network, each network aggregation node being coupled to at least one routing node;

wherein at least one routing node also performs a distribution function for distributing the traffic to at least one wireless end user device and comprises;

at least two backhaul modules; and

,

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

wherein,

each of the at least one routing node receives the at least one wireless signal from the at least one other node by way of the at least two backhaul modules and transmits at least a portion of at least one of the at least one wireless signal to either;

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

or,

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

each backhaul module communicates with only a single node in the wireless network at any one time, and

the backhaul modules of each of the at least one routing node are collocated in the routing node and are configured to minimize interference therebetween.

8. A wireless network for providing services to a plurality of end users, the network comprising:

a plurality of routing nodes for routing traffic by using at least one wireless signal, each routing node being wirelessly coupled to at least one other node; and

,

at least one network aggregation node for routing the traffic between the wireless network and another network, each network aggregation node being coupled to at least one routing node;

wherein at least one routing node also performs a distribution function for distributing the traffic to at least one wireless end user device and each network aggregation node comprises;

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

a switch/router module for routing traffic between different modules in the aggregation node, the traffic being extracted from the at least one wireless signal; and

,

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

wherein each network aggregation node receives the at least one wireless signal from the at least one node by way of the at least two backhaul modules and transmits at least a portion of at least one of the at least one wireless signal to a destination selected from a group comprising;

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

,

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

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

the backhaul modules of each network aggregation node are collocated in the network aggregation node and are configured to minimize interference therebetween.

9. A wireless network according to claim 8 wherein each network aggregation node further comprises a wireless distribution module for communicating with at least one wireless end user device.