Dynamic Router Functionality in Cellular Networks

• US 20170111847A1
• Filed: 10/14/2016
• Published: 04/20/2017
• Est. Priority Date: 10/16/2015
• Status: Active Grant

• Current Assignee: VEEA Systems Limited
• Original Assignee: Virtuosys Limited (Veea, Inc.)
• Inventors: Speight, Timothy James
• Granted Patent: US 9,955,404 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 64/003 locating network equipment
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements
• CPC Class Codes: H04W 84/22 with access to wired networks
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A wireless remote communication unit for communicating with a cellular network node and other wireless remote communication units is described. The wireless remote communication unit comprises: at least one receiver configured to receive first messages using a first technology from at least one other wireless remote communication unit and configured to receive second messages using a second technology from the cellular network node; at least one transmitter configured to transmit first messages using the first technology to at least one other wireless remote communication unit and configured to transmit using the second technology to the cellular network node; and a processor coupled to the at least one receiver and the at least one transmitter and arranged to configure the wireless remote communication unit as a router to support mesh network communications using the first technology based on, at least in part, information obtained from the received first messages from at least one other wireless remote communication unit.

Claims

1. A wireless remote communication unit for communicating with a cellular network node and other wireless remote communication units, the wireless remote communication unit comprising:

at least one receiver configured to receive first messages using a first technology from at least one other wireless remote communication unit and configured to receive second messages using a second technology from the cellular network node;

at least one transmitter configured to transmit first messages using the first technology to at least one other wireless remote communication unit and configured to transmit using the second technology to the cellular network node; and

a processor coupled to the at least one receiver and the at least one transmitter and arranged to configure the wireless remote communication unit as a router between the first technology and the second technology based on, at least in part, information obtained from the received first messages from at least one other wireless remote communication unit.

2. The wireless remote communication unit of claim 1 wherein the first message is a discovery message that includes a discovery identity of the transmitting wireless remote communication unit.

3. The wireless remote communication unit of claim 2 wherein the first message additionally comprises an indication of whether the wireless remote communication unit is inside or outside cellular coverage.

4. The wireless remote communication unit of claim 1 wherein the processor is configured to investigate discovery messages received by the at least one receiver from the at least one other wireless remote communication unit to determine those wireless remote communication units that are within range of the wireless remote communication unit.

5. The wireless remote communication unit of claim 2 wherein the processor is configured to process the discovery message together with a recovered discovery identifier, ID, to determine a number of consistently observed unique neighbor wireless remote communication units.

6. The wireless remote communication unit of claim 1 wherein the at least one transmitter is configured to transmit the first message for a limited period of time.

7. The wireless remote communication unit of claim 1 wherein, in response to the wireless remote communication unit being configured as a router between the first technology and the second technology, the at least one transmitter is configured to transmit a beacon associated with the mesh connectivity.

8. The wireless remote communication unit of claim 7 wherein the beacon comprises one or more from a group of:

a service set identifier, SSID,

a broadcast service set identifier, BSSID,

an indication of a quality metric for the cellular network;

a power level for the cellular network node;

a battery/power availability metric of the wireless remote communication unit.

9. The wireless remote communication unit of claim 1 wherein the at least one transmitter is further configured to transmit a voting message to each at least one other wireless remote communication unit that the wireless remote communication unit receives a first message from to thereby exchange information between the wireless remote communication unit and discovered wireless remote communication units.

10. The wireless remote communication unit of claim 9 wherein the voting message comprises a parameter that enables the processor to perform an a priori empiric calculation to determine whether the wireless remote communication unit is geographically located in a better position to be configured as a router than the at least one other wireless remote communication unit.

11. The wireless remote communication unit of claim 10 wherein the parameter in the voting message comprises one or more from a group of:

the discovery identity of the transmitting wireless remote communication unit;

an indication of a number of unique other wireless remote communication units whose own discovery messages are consistently received by the wireless remote communication unit;

a quality metric for the cellular network;

a power level for the cellular network node;

a battery/power availability metric of the wireless remote communication unit.

12. The wireless remote communication unit of claim 1 wherein the processor is arranged to configure the wireless remote communication unit as a router to support at least one from a group of:

transfer of data packets from mesh network communications using the first technology based on, at least in part, a comparison of information obtained from the received first messages from at least one other wireless remote communication unit and the transmitted discovery message content;

support mesh network communications using the first technology in response to a second discovery message received from an out-of-coverage wireless remote communication unit.

13. The wireless remote communication unit of claim 1 wherein, in response to the processor determining that the wireless remote communication unit has moved out of coverage of the cellular network node, the processor is configured to:

(i) stop forwarding data received on the mesh to the cellular network node via the cellular connectivity;

(ii) stop sending router advertisements to mesh routers and end nodes;

(iii) stop sending discovery messages indicating that the wireless remote communication unit can provide mesh connectivity;

(iv) transition to function as a mesh router in order to route communications between at least one other wireless remote communication unit and a further wireless remote communication unit that is functioning as an edge router.

14. The wireless remote communication unit of claim 1 wherein the second message is a beacon transmission received from the cellular network node to enable the wireless remote communication unit to determine whether it is in coverage of the cellular network node.

15. An integrated circuit for a wireless remote communication unit for communicating with a cellular network node and other wireless remote communication units, the integrated circuit comprising:

at least one receiver port configured to receive first messages using a first technology from at least one other wireless remote communication unit and configured to receive second messages using a second technology from the cellular network node;

at least one transmitter port configured to transmit first messages using the first technology to at least one other wireless remote communication unit and configured to transmit using the second technology to the cellular network node; and

a processor coupled to the at least one receiver port and the at least one transmitter port and arranged to configure the wireless remote communication unit as a router between the first technology and the second technology based on, at least in part, information obtained from the received first messages from at least one other wireless remote communication unit.

16. A method of selecting a wireless remote communication unit for configuration as a router in a wireless communication system that comprises multiple wireless remote communication units, the method comprising, at the wireless remote communication unit:

communicating with at least one other wireless remote communication unit using a first technology,

communicating with a cellular network node using a second technology;

processing received first messages from at least one other wireless remote communication unit; and

configuring the wireless remote communication unit as a router between the first technology and the second technology based on, at least in part, information obtained from the processed received first messages.

17. A non-transitory tangible computer program product comprising executable code stored therein for selecting a wireless remote communication unit for configuration as a router in a wireless communication system that comprises multiple wireless remote communication units, wherein the code is operable for, when executed at a remote wireless communication unit:

communicating with at least one other wireless remote communication unit using a first technology;

communicating with a cellular network node using a second technology;

processing received first messages from at least one other wireless remote communication unit; and

configuring the wireless remote communication unit as a router between the first technology and the second technology based on, at least in part, information obtained from the processed received first messages.

18. A wireless communication system that comprises multiple wireless remote communication units, wherein at least one wireless remote communication unit comprises:

at least one receiver configured to receive first messages using a first technology from at least one other wireless remote communication unit and configured to receive second messages using a second technology from the cellular network node;

at least one transmitter configured to transmit first messages using the first technology to at least one other wireless remote communication unit and configured to transmit using the second technology to the cellular network node; and

a processor coupled to the at least one receiver and the at least one transmitter and arranged to configure the wireless remote communication unit as a router between the first technology and the second technology based on, at least in part, information obtained from the received first messages from at least one other wireless remote communication unit.

19. The wireless communication system of claim 18 wherein the at least one processor configures the wireless remote communication unit as a router in response to processing the first messages and determining that the plurality of wireless remote communication unit requires a minimum number of radio resource control connections required from the plurality of communication wireless remote communication units.

20. The wireless communication system of claim 18 wherein a plurality of wireless remote communication units are configured to vote between themselves to determine which is to be reconfigured as a router.