Method and apparatus for radio handset spectrum range registration
First Claim
1. A method for handset spectrum range registration in cordless telephone systems having base stations operating in a first spectrum range and a second spectrum range where the first and second spectrum ranges have a portion of overlapping spectrum ranges, comprising the steps of:
- at the handset;
scanning the portion of overlapping spectrum ranges provided by the base stations;
choosing a channel within the overlapping spectrum ranges substantially free from interference and designating the channel as an initial link establishment channel and as a re-establishment channel for subsequent re-establishments, wherein an initial link is established with the channel;
sending a re-establishment link request to the base station to have the base station re-establish a link with the re-establishment channel on the handset;
determining if the re-establishment channel was for the first base station operating in the first spectrum range or the second base station operating in the second spectrum range by measuring the amount of time to achieve the re-establishment;
at the base station in communication with the handset;
establishing a link with the handset on the initial link establishment channel;
re-establishing a link with the handset on the re-establishment channel designated by the handset.
1 Assignment
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Accused Products
Abstract
A method for handset spectrum registration in cordless telephone systems having base stations operating in a first spectrum (102) and a second spectrum (101) where the first and second spectrums have a portion (103) of overlapping spectrum ranges comprises the steps at a handset (206) of scanning (18) the portion of overlapping spectrum ranges provided by a base station which is either a first base station having the first spectrum range or a second base station having the second spectrum and then choosing (20) a channel within the overlapping spectrum ranges substantially free from interference and designating the channel as the initial link establishment channel and as a re-establishment channel for subsequent re-establishment links. The handset then sends (22) a re-establishment link request to the base station to have the base re-establish a link with the re-establishment channel on the handset. Then, the handset determines (24) if the re-establishment channel was for a base station operating in the first spectrum range or a base station operating in the second spectrum range by measuring the amount of time it takes to achieve the re-establishment.
9 Citations
18 Claims
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1. A method for handset spectrum range registration in cordless telephone systems having base stations operating in a first spectrum range and a second spectrum range where the first and second spectrum ranges have a portion of overlapping spectrum ranges, comprising the steps of:
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at the handset; scanning the portion of overlapping spectrum ranges provided by the base stations; choosing a channel within the overlapping spectrum ranges substantially free from interference and designating the channel as an initial link establishment channel and as a re-establishment channel for subsequent re-establishments, wherein an initial link is established with the channel; sending a re-establishment link request to the base station to have the base station re-establish a link with the re-establishment channel on the handset; determining if the re-establishment channel was for the first base station operating in the first spectrum range or the second base station operating in the second spectrum range by measuring the amount of time to achieve the re-establishment; at the base station in communication with the handset; establishing a link with the handset on the initial link establishment channel; re-establishing a link with the handset on the re-establishment channel designated by the handset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for handset spectrum range registration in cordless telephone systems having base stations operating in a first spectrum range and a second spectrum range where the first and second spectrums have a portion of overlapping spectrum ranges, comprising the steps of:
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at the handset; scanning the portion of overlapping spectrum ranges provided by the base stations; choosing a pair of channels within the overlapping spectrum ranges substantially free from interference, wherein an initial link is established with the first channel and the second channel is designated as a re-establishment channel; sending a re-establishment link request to the base station to have the base re-establish a link with the designated re-establishment channel on the handset; determining if the re-establishment channel was for the first base station operating in the first spectrum range or the second base station operating in the second spectrum range by measuring the amount of time to achieve a link with the re-establishment channel; at the base station in communication with the handset; establishing a link with the handset on the first channel; re-establishing a link with the handset on the second channel designated by the handset. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A cordless telephone for use in communication systems having base stations with different spectrum ranges, wherein the base stations operate in either a first spectrum range or a second spectrum range wherein the first and second spectrums have a portion of overlapping spectrum ranges and wherein the cordless telephone comprises:
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a means for scanning the portion of overlapping spectrum ranges provided by the base stations; a means for choosing a channel within the overlapping spectrum ranges substantially free from interference and designating the channel as the initial link establishment channel and as a re-establishment channel for subsequent re-establishment links, wherein an initial link is established with the channel; a means for sending a re-establishment link request to the base station to have the base station re-establish a link with the re-establishment channel on the cordless phone; means for determining if the re-establishment channel was for a base station operating in the first spectrum range or a base station operating in the second spectrum range by measuring the amount of time to achieve the re-establishment.
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17. A cordless telephone system having base stations operating in a first spectrum range and a second spectrum range wherein the first and second spectrum ranges have a portion of overlapping spectrum ranges, comprising:
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a radiotelephone handset, said handset comprising; means for scanning the portion of overlapping spectrum ranges provided by a base which is either a first base station having the first spectrum range or a second base station having the second spectrum range; means for choosing a pair of channels within the overlapping spectrum ranges substantially free from interference, wherein an initial link is established with the first channel and the second channel is designated as a re-establishment channel; means for sending a re-establishment link request to the base station to have the base station re-establish a link with the designated channel on the handset; means for determining if the re-establishment channel was for the first base station operating in the first spectrum range or the second base station operating in the second spectrum range by measuring the amount of time to achieve a link with the re-establishment channel; at least two base stations, each of said base stations comprising; means for establishing a link with the handset on the first channel; means for re-establishing a link with the handset on the second channel designated by the handset.
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18. A method for handset spectrum registration in cordless telephone systems having base stations operating in a first spectrum range and a second spectrum range where the first and second spectrum ranges have a portion of overlapping spectrum ranges, comprising the steps at the handset of:
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choosing a channel and establishing a link with the channel within the overlapping spectrum ranges; designating a channel as a re-establishment channel for subsequent re-establishments; sending a re-establishment link request to the base station to have the base station re-establish a link with the re-establishment channel on the handset; and determining if the re-establishment channel was for the first base station operating in the first spectrum range or the second base station operating in the second spectrum range by measuring the amount of time to achieve the re-establishment.
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Specification