Network routing system, method, and computer program product

Patent metadata

Field	Value
Publication number	US-10568139-B2
Application number	US-201816235890-A
Country	US
Kind code	B2
Filing date	Dec 28, 2018
Priority date	Mar 9, 2011
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A method, system, or computer program product to enhance the performance of multi-hop cellular networks or other wireless networks is provided. A wireless device (e.g., cellular telephone) is able to communicate with a base-station in a cell of the cellular network over a non-cellular interface via another wireless device in the cell through the use of multi-hopping. By enabling wireless devices to communicate with a base station in such a manner, the effective coverage area of the cellular network is expanded and the effective capacity of the cellular network is improved. Distributed routing, device management, adaptive scheduling, and distributed algorithms can be used to enhance the overall performance of multi-hop cellular networks.

First claim

The invention claimed is:

1. A method of conveying data on a cellular and multi-hop, non-cellular network, the method comprising:
receiving, with a non-cellular interface of an originating cellular device, a first node-state signal transmitted from a first relay cellular device, wherein the first node-state signal is received after the first relay cellular device:
determines, in the first relay cellular device, that the first relay cellular device will make itself available as a relay for other cellular devices in a cellular and multi-hop, non-cellular network;
in response to determining that the first relay cellular device will make itself available as a relay, transmits, from a non-cellular interface of the first relay cellular device, the first node-state signal indicating the availability of the first relay cellular device as a relay for other cellular devices in the cellular and multi-hop, non-cellular network;

determining, in the originating cellular device, based on the first node-state signal that the originating cellular device will wirelessly connect to a base station of a cellular network via the first relay cellular device in the cellular and multi-hop, non-cellular network, wherein determining that the originating cellular device will wirelessly connect via the first relay cellular device comprises:
extracting from the first node-state signal a first cellular signal quality, the first cellular signal quality quantifying a quality of cellular signals from the base station at the first relay cellular device or a sink cellular device through which the relay cellular device wirelessly connects to the base station;
measuring a second cellular signal quality at the originating cellular device; and
in response to the first cellular signal quality and the second cellular signal quality, determining that the originating cellular device will wirelessly connect to the base station of the cellular network via the first relay cellular device; and

in response to determining that the originating cellular device will wirelessly connect to the base station of the cellular network via the first relay cellular device:
transmitting uplink data, for transmission to the base station via the first relay cellular device, from the originating cellular device; or
receiving downlink data, from the base station, at the originating cellular device via the first relay cellular device,

wherein determining, in response to the first cellular signal quality and the second cellular signal quality, that the originating cellular device will wirelessly connect to the base station of the cellular network via the first relay cellular device comprises:
determining the second cellular signal quality is less than a threshold cellular signal quality that is adjusted based on a network usage profile.

2. The method of claim 1 , wherein the step of determining that the originating cellular device will wirelessly connect to the base station of the cellular network via the first relay cellular device in the cellular and multi-hop, non-cellular network comprises:
sensing with the originating cellular device a first cellular signal strength of the base station;
sensing with the originating cellular device a second cellular signal strength of another base station; and
based on a comparison of the first cellular signal strength and the second cellular signal strength, determining, in the originating cellular device, that the originating cellular device will wirelessly connect to the base station of the cellular network via the first relay cellular device in the cellular and multi-hop, non-cellular network.

3. The method of claim 1 , comprising:
determining, in a second relay cellular device, that the second relay cellular device will make itself available as a relay for other cellular devices in the cellular and multi-hop, non-cellular network;
in response to determining that the second relay cellular device will make itself available as a relay, transmitting, from a non-cellular interface of the second relay cellular device, a second node-state signal indicating the availability of the second relay cellular device as a relay for other cellular devices in the cellular and multi-hop, non-cellular network;
receiving, with the non-cellular interface of the originating cellular device, the second node-state signal transmitted from the second relay cellular device; and
wherein the step of determining that the originating cellular device will wirelessly connect to the base station of the cellular network via the first relay cellular device comprises comparing, in the originating cellular device, information based on the first node-state signal and information based on the second node-state signal to select between the first relay cellular device and the second relay cellular device.

4. The method of claim 3 , comprising:
sensing, in the originating cellular device, a deterioration in a wireless connection between the originating cellular device and the first relay cellular device or a deterioration in a wireless connection between the first relay cellular device and the base station; and
determining, in the originating cellular device, based on the sensed deterioration that the originating cellular device will wirelessly connect to the base station of the cellular network via the second relay cellular device instead of the first relay cellular device.

5. The method of claim 1 , wherein the step of determining, in the first relay cellular device, that the first relay cellular device will make itself available as a relay for other cellular devices in the cellular and multi-hop, non-cellular network comprises the first relay cellular device determining to make itself available as a relay based on at least four of the following:
a value indicative of a cellular signal strength of cellular signals from the base station at the first relay cellular device;
a value indicative of a cellular signal quality of cellular signals from the base station at the first relay cellular device;
node-state signals received from other cellular devices in the cellular and multi-hop, non-cellular network at the first relay cellular device;
a value indicative of a non-cellular signal strength of non-cellular signals from the originating cellular device at the first relay cellular device;
a value indicative of a non-cellular signal quality of non-cellular signals from the originating cellular device at the first relay cellular;
a value indicative of a price for cellular service paid by a user associated with the first relay cellular device;
a value indicative of an amount of energy stored by the first relay cellular device;
a type of power source of the first relay cellular device;
a number of antennas coupled to a cellular-interface of the first relay cellular device;
a value indicative of movement of the first relay cellular device;
a value indicative of the time of day;
a value indicative of a number of hops between the base station and the first relay cellular device; or
a value indicative of an amount of available bandwidth for wireless communication with the base station from the first relay cellular device.

6. The method of claim 1 , comprising:
determining, in the sink cellular device, that the sink cellular device will make itself available as a sink for other cellular devices in a cellular and multi-hop, non-cellular network; and
in response to determining that the sink cellular device will make itself available as a sink, transmitting, from a non-cellular interface of the sink cellular device, a third node-state signal, wherein the third node-state signal comprises data indicative of at least three of the following:
the availability of the sink cellular device as a sink;
a signal strength of cellular signals fro

Assignees

• Univ Texas

Inventors

• Bhargava Vidur
• Vishwanath Sriram
• Jose Jubin

Classifications

• H04W80/06

  Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless {(transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16)} · CPC title

• H04W74/0816 Primary

  with collision avoidance · CPC title

• H04W74/02

  Hybrid access · CPC title

• H04W40/22

  using selective relaying for reaching a BTS [Base Transceiver Station] or an access point · CPC title

• H04W40/12

  based on transmission quality or channel quality · CPC title