US5459873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and communication system for improved channel scanning and link establishment determinations
Assignee: Motorola Solutions Inc
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Filing: 1993-08-21
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Granted: 1995-10-17
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Expires: 2013-08-21
Abstract
Abstract A method for improved channel scanning and link establishment determinations in a communication system (30) having at least one base station (36) with at least two antennas (32 and 34) and at least one portable unit (38 or 40) capable of linking with the base station, comprises the steps at the base station of determining (104) whether a communication resource on the base station is operating as a control channel and switching or alternating (106) antennas periodically if the communication resource operates as a control channel. Otherwise, the antennas are switched in accordance with a diversity algorithm (54) if the communication resource operates as a traffic bearing channel.
Inventors
- 👤 Morris Moore
- 👤 II Clinton C. Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:14
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0802; H04B7/06; H04B7/0602; H04B7/0604; H04W; H04W36/00; H04W36/08
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
97 words
A method for improved channel scanning and link establishment reliability determinations in a communication system having at least one base station having at least two antennas and at least one portable unit capable of linking with the base station, comprising the steps of: at the base station: determining whether a communication resource on the base station is operating as a control channel; and switching between the at least two antennas periodically if the communication resource operates as a control channel to obtain the link establishment reliability determination for handoff, or for link establishment or for link re-establishment.
Claim 2
Independent Claim
97 words
A method for improved channel scanning and link establishment reliability determinations in a communication system having at least one base station having at least two antennas and at least one portable unit capable of linking with the base station, comprising the steps of: at the base station: determining whether a communication resource on the base station is operating as a control channel; and switching between the at least two antennas periodically if the communication resource operates as a control channel to obtain the link establishment reliability determination for handoff, or for link establishment or for link re-establishment.
Claim 3
Dependent Claim
43 words
The method of improved channel scanning and link establishment determination in accordance with claim 1, further comprising the step of switching between the at least two antennas in accordance with a diversity algorithm if the communication resource operates as a traffic bearing channel.
Claim 4
Dependent Claim
17 words
The method of claim 1, wherein the communication system comprises a Digital European Cordless Telephone (DECT) system.
Claim 5
Dependent Claim
17 words
The method of claim 1, wherein the communication system comprises a second generation cordless phone (CT-2) system.
Claim 6
Dependent Claim
15 words
The method of claim 1, wherein the communication system comprises a Personal Communication System (PCS).
Claim 7
Dependent Claim
64 words
The method of claim 1, wherein the step of switching between the at least two antennas periodically occurs at every frame in a time division duplex system when the communication resource operates as a control channel and wherein the base station switches between the at least two antennas in accordance with a diversity algorithm if the communication resource operates as a traffic bearing channel.
Claim 8
Independent Claim
116 words
A method for improved channel scanning and link establishment reliability determinations in a communication system having at least one base station having at least two antennas and at least one portable unit capable of linking with the base station, comprising the steps of: at the base station: determining whether a communication resource on the base station is operating as a control channel; switching between the at least two antennas periodically if the communication resource operates as a control channel to obtain the link establishment reliability determination for handoff, or for link establishment or for link re-establishment; and switching the antennas in accordance with a diversity algorithm if the communication resource operates as a traffic bearing channel.
Claim 9
Independent Claim
116 words
A method for improved channel scanning and link establishment reliability determinations in a communication system having at least one base station having at least two antennas and at least one portable unit capable of linking with the base station, comprising the steps of: at the base station: determining whether a communication resource on the base station is operating as a control channel; switching between the at least two antennas periodically if the communication resource operates as a control channel to obtain the link establishment reliability determination for handoff, or for link establishment or for link re-establishment; and switching the antennas in accordance with a diversity algorithm if the communication resource operates as a traffic bearing channel.
Claim 10
Dependent Claim
17 words
The method of claim 7, wherein the communication system comprises a Digital European Cordless Telephone (DECT) system.
Claim 11
Dependent Claim
17 words
The method of claim 7, wherein the communication system comprises a second generation cordless phone (CT-2) system.
Claim 12
Dependent Claim
15 words
The method of claim 7, wherein the communication system comprises a Personal Communication System (PCS).
Claim 13
Dependent Claim
23 words
The method of claim 7, wherein the step of switching the antenna periodically occurs at every frame in a time division duplex system.
Claim 14
Dependent Claim
28 words
The method of claim 7, wherein the step of switching between the at least two antennas periodically only occurs when the base station is not receiving other information.
Claim 15
Dependent Claim
114 words
A communication system providing for improved channel scanning and link establishment reliability determinations having at least one base station having at least two antennas and at least one portable unit capable of linking with the base station, the at least one base station, comprising: means for determining whether a communication resource on the base station is operating as a control channel; means for switching antennas periodically if the communication resource operates as a control channel to obtain the link establishment reliability determination for handoff, or for link establishment or for link re-establishment; and means for switching the antennas in accordance with a diversity algorithm if the communication resource operates as a traffic bearing channel.
Claim 16
Dependent Claim
114 words
A communication system providing for improved channel scanning and link establishment reliability determinations having at least one base station having at least two antennas and at least one portable unit capable of linking with the base station, the at least one base station, comprising: means for determining whether a communication resource on the base station is operating as a control channel; means for switching antennas periodically if the communication resource operates as a control channel to obtain the link establishment reliability determination for handoff, or for link establishment or for link re-establishment; and means for switching the antennas in accordance with a diversity algorithm if the communication resource operates as a traffic bearing channel.
Claim 17
Dependent Claim
18 words
The communication system of claim 13, wherein the communication system comprises a Digital European Cordless Telephone (DECT) system.
Claim 18
Dependent Claim
18 words
The communication system of claim 13, wherein the communication system comprises a second generation cordless phone (CT-2) system.
Claim 19
Dependent Claim
16 words
The communication system of claim 13, wherein the communication system comprises a Personal Communication System (PCS).
Claim 20
Dependent Claim
30 words
The communication system of claim 13, wherein the means for switching the antenna periodically switches among the at least two antennas at every frame in a time division duplex system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-10-16 | 1999-04-17 | 1999-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-16 | 2003-04-17 | 2003-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-16 | 2007-04-17 | 2007-10-17 | $7700.00 | Window Closed / Lapsed |