Method and system for self-organizing networks using cooperative sensing

• US 9,288,772 B2
• Filed: 04/22/2013
• Issued: 03/15/2016
• Est. Priority Date: 04/22/2013
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Vrzic, Sophie, Jia, Yongkang, Suzuki, Takashi, Purnadi, Rene Waraputra
• Primary Examiner(s): Rego, Dominic E
• Application Number:
  US13/867,754
• Publication Number:
  US 20140315593A1
• Time in Patent Office: 1,058 Days
• Field of Search: 455/522, 455/67.11, 455 68- 70, 455/126, 455/127.1, 455/424, 455/426.1, 455/435.2, 455436-444, 455/449, 455/450
• US Class Current: 1/1
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/228 using past power values or information
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations
• CPC Class Codes: H04W 52/40 during macro-diversity or soft handoff
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A method, network element and user equipment, where in one embodiment at a network element within a secondary cell for self-optimizing operation with a primary cell, the method transmitting using an initial transmit power from the network element; requesting feedback from sensors located near a location; receiving the feedback from the sensors; and adjusting a transmit power based on the received feedback.

Claims

1. A method at a network element within a secondary cell for self-optimizing operation with a primary cell, the method comprising:

transmitting using an initial transmit power from the network element within the secondary cell;

requesting feedback from sensors of sensing measurements of transmissions received from the network element, the sensors located near a location in a region correlated with the primary cell;

receiving the feedback from the sensors; and

adjusting a transmit power of the network element based on the received feedback.

2. The method of claim 1, wherein the initial transmit power is provided by at least one of a network, spectrum management entity or radio resource management entity.

3. The method of claim 1, wherein the location is a reference point in or about the primary cell.

4. The method of claim 1, wherein the location is a reference point in or about the secondary cell.

5. The method of claim 1, wherein the feedback received is weighted based on a distance from the sensing user equipment to the location.

6. The method of claim 1, wherein the feedback received is weighted by a confidence value assigned to the sensor.

7. The method of claim 6, wherein the confidence value is based on a correlation of signal to interference noise ratio measurements between sensors and a reference user equipment in the location.

8. The method of claim 6, wherein the confidence value is based on a pass loss between the sensor and the secondary cell.

9. The method of claim 1, wherein the adjusting is iterative based on further received feedback.

10. The method of claim 1, wherein the secondary cell is selected based on a proximity to the primary cell.

11. The method of claim 1, wherein the receiving is over an analogue feedback channel.

12. A network element within a secondary cell for self-optimizing operation with a primary cell, the network element comprising:

a processor; and

a communications subsystem,

wherein the network element is configured to;

transmit within the secondary cell using an initial transmit power from the network element;

request feedback from sensors of sensing measurements of transmissions received from the network element, the sensors located near a location in a region correlated with the primary cell;

receive the feedback from the sensors; and

adjust a transmit power of the network element based on the received feedback.