US 7,610,385 B2Granted

System and method for adaptive bandwidth utilization for interoperability

AssigneeVTech Telecommunications Limited

InventorsSukhdeep S. Hundal, Supajet Guy Pothiboon

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Abstract

Bandwidth usage in a radio communication device is readjusted to eliminate overlapping communication system bandwidth. The readjustment is made in consideration of communication channel quality and other activity in the spectrum in which the radio communications are desired. Using this information, a communication link is set up to avoid overlapping with other radio communications already present in the band. Frequencies at which significant degradation in the communication occurs are also avoided. In addition, for frequency hopping devices, hop sequence is readjusted in accordance with the newly assigned channels.

Claims31

Dependent claims

A system for adaptively maximizing bandwidth utilization in a cordless telephone system operating over a predetermined communication band, comprising:

an activity sensor to determine frequencies being used by other communication systems using a the predetermined communication band;
a link monitor to monitor a quality of a communication link by measuring one or more channels in the predetermined communications band;
a bandwidth utilization profile generator to generate a profile of the predetermined communication band;
and
a link manager, implemented by the cordless telephone system, to manage and control the communication link to preclude use of a given frequency of the predetermined communication band when said given frequency is being used by at least one of said other communication systems in accordance with information provided by the bandwidth utilization profile, wherein the link manager uses the quality of the communication link to determine said given frequency is being used by at least one of said other communication systems, wherein the bandwidth utilization profile generator is configured to receive information from a second link manager on an opposite side of the communication link in order to determine whether errors determined by the link monitor are due to a frequency hopping interferer or fixed frequency interferer, wherein a frequency of interference from the frequency hopping interferer varies in time according to a hop sequence and wherein a frequency of interference from the fixed frequency interferer is constant;
a hop sequence regenerator to generate a pseudo-random hop sequence according to the bandwidth utilization information provided by the bandwidth utilization profile generator, wherein the link manager precludes use of the said given frequency being used by at least one of said other communication systems in accordance with the pseudo-random hop sequence.

3 more elements

A method for adaptively maximizing bandwidth utilization in a cordless telephone system, comprising:

determining frequencies being used by other communication systems using a predetermined communication band;
monitoring, using a link monitor, a quality of a communication link to determine available frequencies not being used by at least one of said other communication systems;
generating, using a bandwidth utilization profile generator, a bandwidth utilization profile of the predetermined communication band;
and
using a link manager, implemented by the cordless telephone system, to control the communication link to determine available frequencies not being used by at least one of said other communication systems in accordance with information provided by the bandwidth utilization profile, wherein the bandwidth utilization profile generator is configured to receive information from a second link manager on an opposite side of the communication link in order to determine whether errors determined by the link monitor are due to a frequency hopping interferer or fixed frequency interferer, wherein a frequency of interference from the frequency hopping interferer varies in time according to a hop sequence and wherein a frequency of interference from the fixed frequency interferer is constant;
generating a pseudo-random hop sequence according to the bandwidth utilization profile;
and
controlling the communication in accordance with the generated pseudo-random hop sequence.

5 more elements

A system for adaptively maximizing bandwidth utilization in a cordless telephone system, comprising:

means for determining frequencies being used by other communication systems using a predetermined communication band;
means for monitoring a quality of a communication link to determine available frequencies not being used by at least one of said other communication systems;
means for generating a bandwidth utilization profile of the predetermined communication band;
and
means for controlling communication to determine available frequencies not being used by at least one of said other communication systems in accordance with information provided by the bandwidth utilization profile, wherein the means for generating a bandwidth utilization profile is configured to receive information from a second means for controlling communication disposed on an opposite side of the communication link in order to determine whether errors determined by the means for monitoring are due to a frequency hopping interferer or fixed frequency interferer, wherein a frequency of interference from the frequency hopping interferer varies in time according to a hop sequence and wherein a frequency of interference from the fixed frequency interferer is constant;
means for generating a pseudo-random hop sequence according to the bandwidth utilization profile;
and
means for controlling the communication in accordance with the generated pseudo-random hop sequence.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/338,009Filed 8 Jan 2003
Published: US 2004/0131016 A18 Jul 2004
Granted: 27 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04W 24/02
Supervisory, monitoring or testing arrangements: arrangements for optimising operational condition
H04B 7/2621
At least one of which is mobile: using frequency division multiple access [FDMA]
H04W
Wireless communication networks
H04B
Transmission

Family

US 2004/0131016 A1Pre-grant publication · published 8 Jul 2004
US 7,610,385 B2This patent

From the US filing history. Foreign family members aren’t listed.

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