US6047175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wireless communication method and device with auxiliary receiver for selecting different channels
Assignee: Cisco Technology Inc
•
Filing: 1996-09-19
•
Granted: 2000-04-04
•
Expires: 2016-09-19
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.
References Cited (Backward Citations)
US4216432A
Cited
US4792984A
Cited
US5142550A
Cited
US5101501A
Cited
US5267262A
Cited
US5230082A
Cited
US5390366A
Cited
US5506867A
Cited
US5483666A
Cited
US5640414A
Cited
US5361399A
Cited
US5386435A
Cited
US5287384A
Cited
US5452471A
Cited
US5594949A
Cited
US5539923A
Cited
US5442627A
Cited
US5475864A
Cited
US5546397A
Cited
US5701590A
Cited
US5697055A
Cited
US5825764A
Cited
US5794145A
Cited
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 |