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US6047175A Expired / Lapsed US ⏱️ 0.0 years remaining

Wireless communication method and device with auxiliary receiver for selecting different channels

Assignee: Cisco Technology Inc
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Filing: 1996-09-19
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Granted: 2000-04-04
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Expires: 2016-09-19
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Abstract

Abstract A wireless communication device and method which includes the introduction of a auxiliary receiver or transceiver which is included in a base station or mobile terminal in addition to a transceiver used to communicate between devices. The auxiliary receiver or transceiver serves to monitor conditions on available communication channels other than the channel currently being utilized for communication between devices.

Inventors

  • 👤 Michael L. Trompower

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 17:43
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W16/00; H04W16/24; H04W16/26; H04W24/00

Claims Analysis

Total Claims: 20
Claim 1
Independent Claim 95 words
A wireless communication device, comprising: a transceiver including a transmitter and a receiver for transmitting and receiving wireless communications selectively on any of a plurality of channels; and an auxiliary receiver for scanning substantially continuously to evaluate one of the plurality of channels while the transceiver communicates on another of the plurality of channels, and for providing information based on communication conditions to the transceiver; wherein the auxiliary receiver is operatively configured to evaluate the communication conditions by selectively evaluating at least one of different frequency bands, PN code sequences, chipping rates, and modulation complexities.
Claim 2
Dependent Claim 95 words
A wireless communication device, comprising: a transceiver including a transmitter and a receiver for transmitting and receiving wireless communications selectively on any of a plurality of channels; and an auxiliary receiver for scanning substantially continuously to evaluate one of the plurality of channels while the transceiver communicates on another of the plurality of channels, and for providing information based on communication conditions to the transceiver; wherein the auxiliary receiver is operatively configured to evaluate the communication conditions by selectively evaluating at least one of different frequency bands, PN code sequences, chipping rates, and modulation complexities.
Claim 3
Dependent Claim 14 words
The device of claim 1, wherein the auxiliary receiver selectively evaluates different frequency bands.
Claim 4
Dependent Claim 22 words
The device of claim 2, wherein the auxiliary receiver evaluates the different frequency bands by selectively switching between filters having different bandwidths.
Claim 5
Dependent Claim 27 words
The device of claim 3, wherein the filters include at least one filter which is broad enough to include at least a portion of two different channels.
Claim 6
Dependent Claim 15 words
The device of claim 1, wherein the auxiliary receiver selectively evaluates different PN code sequences.
Claim 7
Dependent Claim 20 words
The device of claim 5, wherein the auxiliary receiver comprises a programmable PN decoder for providing different PN code sequences.
Claim 8
Dependent Claim 14 words
The device of claim 1, wherein the auxiliary receiver selectively evaluates different chipping rates.
Claim 9
Dependent Claim 19 words
The device of claim 7, wherein the auxiliary receiver comprises a programmable PN decoder for providing different chipping rates.
Claim 10
Dependent Claim 14 words
The device of claim 1, wherein the auxiliary receiver selectively evaluates different modulation complexities.
Claim 11
Dependent Claim 19 words
The device of claim 9, wherein the auxiliary receiver comprises a programmable symbol-to-data converter for providing different modulation schemes.
Claim 12
Dependent Claim 14 words
The device of claim 10, wherein the different modulation schemes include BPSK and QPSK.
Claim 13
Dependent Claim 33 words
The device of claim 1, wherein the transceiver transmits and receives the wireless communications on a channel selected from among the plurality of channels based on the information provided from the auxiliary receiver.
Claim 14
Dependent Claim 22 words
The device of claim 1, wherein the auxiliary receiver evaluates noise conditions on the at least one of the plurality of channels.
Claim 15
Dependent Claim 24 words
The device of claim 13, wherein the noise conditions are based on a received signal strength indicator (RSSI) signal obtained by the auxiliary receiver.
Claim 16
Dependent Claim 27 words
A base station comprising the device of claim 1, and further including means for connecting the base station to a system backbone in a wireless communication network.
Claim 17
Dependent Claim 131 words
In a wireless communication device including a transceiver having a transmitter and a receiver for transmitting and receiving wireless communications on any of a plurality of channels, and an auxiliary receiver, a method for communicating comprising the steps of: the transceiver communicating on a channel selected from the plurality of channels; the auxiliary receiver scanning substantially continuously to evaluate communication conditions on each of the plurality of channels while the transceiver communicates on the selected channel, and selecting another channel for the transceiver to communicate on from among the plurality of channels based on the information provided by the auxiliary receiver, wherein the auxiliary receiver is operatively configured to evaluate the communication conditions by selectively evaluating at least one of different frequency bands, PN code sequences, chipping rates, and modulation complexities.
Claim 18
Dependent Claim 131 words
In a wireless communication device including a transceiver having a transmitter and a receiver for transmitting and receiving wireless communications on any of a plurality of channels, and an auxiliary receiver, a method for communicating comprising the steps of: the transceiver communicating on a channel selected from the plurality of channels; the auxiliary receiver scanning substantially continuously to evaluate communication conditions on each of the plurality of channels while the transceiver communicates on the selected channel, and selecting another channel for the transceiver to communicate on from among the plurality of channels based on the information provided by the auxiliary receiver, wherein the auxiliary receiver is operatively configured to evaluate the communication conditions by selectively evaluating at least one of different frequency bands, PN code sequences, chipping rates, and modulation complexities.
Claim 19
Dependent Claim 20 words
The method of claim 16, wherein the wireless communication device is a base station used in a cellular communication network.
Claim 20
Dependent Claim 20 words
The method of claim 16, wherein the wireless communication device is a mobile terminal used in a cellular communication network.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2003-04-04 2003-10-04 2004-04-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2007-04-04 2007-10-04 2008-04-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2011-04-04 2011-10-04 2012-04-04 $7700.00 Window Closed / Lapsed

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