Communications System Density and Range Improvement by Signal-Strength-Directed Channel Class Selection with Weighting for Minimum Capacity Consumption

• US 20140018122A1
• Filed: 09/12/2013
• Published: 01/16/2014
• Est. Priority Date: 05/19/2010
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Plantronics, Inc.
• Inventors: Cahill, Stephen V.
• Granted Patent: US 9,479,317 B2
• Time in Patent Office: Days
• US Class Current: 455/513
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 5/0069 Allocation based on distance or geographical location allocation based on terminal or device properties in general, H04W72/51
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal

Abstract

Methods and apparatuses for optimized channel selection are disclosed. In one example, a channel quality is measured of each channel of an available number of channels on which a mobile communication device can transmit and receive. A subset of the available number of channels is allocated to a long range channel class responsive to the channel quality. An RSSI of the mobile communication device is monitored and correlated to a mobile communication device proximity to a base station. A channel is selected from the long range channel class if the mobile communication device proximity is greater than a predetermined proximity.

Claims

1. A method of channel selection for a mobile communication device comprising:

periodically performing a channel quality measurement for each channel of an available number of communication channels;

monitoring a RSSI of the mobile communication device;

identifying a lowest quality channel satisfying a predetermined required signal to interference ratio utilizing the RSSI of the mobile communication device and the channel quality measurement for each channel; and

selecting the lowest quality channel satisfying the predetermined required signal to interference ratio.

2. The method of claim 1, further comprising ordering the available number of communication channels in a preference order list based on the channel quality measurement, the available number of communication channels ranked from lowest quality to highest quality, wherein identifying the lowest quality channel satisfying a predetermined required signal to interference ratio comprises comparing a measure of the desired-signal and interference-signal RSSIs to the channel quality measurement for each channel in the preference order list in increasing order from lowest quality to highest quality.

3. The method of claim 1, wherein periodically performing a channel quality measurement for each channel comprises measuring an interference level.

4. The method of claim 3, wherein the noise level is based on interference caused by other DECT users.

5. The method of claim 1, wherein the mobile communication device transmits and receives on the lowest quality channel utilizing a DECT protocol.

6. A mobile communication device comprising:

a processor;

a transceiver;

an antenna; and

a memory storing a channel selection optimization application configured to identify a lowest quality channel satisfying a predetermined required signal to noise ratio utilizing the RSSI of the mobile communication device and a channel quality measurement for each available channel of an available number of channels.

7. The mobile communication device of claim 6, wherein the channel selection optimization application is further configured to order the available number of channels in a preference order list based on the channel quality measurement, the available number of channels ranked from lowest quality to highest quality, wherein the channel selection optimization application identifies a lowest quality channel satisfying a predetermined required signal to noise ratio by comparing the a measure of the desired-signal and interference-signal RSSIs to the channel quality measurement for each channel in the preference order list in increasing order from lowest quality to highest quality.

8. The mobile communication device of claim 6, wherein the transceiver is a DECT transceiver and the available number of channels is five.