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Patent US6112093A successfully refreshed from Google Patents.
US6112093A
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Radio communication system and method for analog and digital traffic channel allocation using a second higher threshold when allocating a digital channel
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1996-07-03
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Granted: 2000-08-29
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Expires: 2016-07-03
Abstract
Abstract The establishment of digital connections is avoided if the power level compensated uplink signal strength transmitted by a dual-mode mobile station is below a threshold value. In such cases, a dual-mode mobile station is instead preferably connected to an analog traffic channel. The threshold value can be selected to provide a statistically acceptable probability that the digital connection will be successful. Different threshold values can be used for different connection situations to take into account the different techniques used to determine a best serving base station.
Inventors
- 👤 Peter Nordlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:47
CPC Classifications
H; H04; H04W; H04W48/00; H04W48/18; H04W36/00; H04W36/06
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
113 words
A method for allocating a traffic channel to a mobile station at call set-up in a radiocommunication system having both analog traffic channels and digital traffic channels, the method comprising the steps of: measuring, at a base station, a signal strength received from said mobile station on a control channel; determining if said measured signal strength exceeds a first threshold sufficient to permit communication between said base station and said mobile station; if so, allocating a digital traffic channel to said mobile station if said measured signal strength exceeds a second threshold wherein said second threshold is higher than said first threshold; and otherwise, allocating an analog traffic channel to said mobile station.
Claim 2
Independent Claim
113 words
A method for allocating a traffic channel to a mobile station at call set-up in a radiocommunication system having both analog traffic channels and digital traffic channels, the method comprising the steps of: measuring, at a base station, a signal strength received from said mobile station on a control channel; determining if said measured signal strength exceeds a first threshold sufficient to permit communication between said base station and said mobile station; if so, allocating a digital traffic channel to said mobile station if said measured signal strength exceeds a second threshold wherein said second threshold is higher than said first threshold; and otherwise, allocating an analog traffic channel to said mobile station.
Claim 3
Dependent Claim
14 words
The method of claim 1, wherein said control channel is an analog control channel.
Claim 4
Dependent Claim
14 words
The method of claim 1, wherein said control channel is a digital control channel.
Claim 5
Dependent Claim
14 words
The method of claim 1, further comprising the step of: varying said second threshold.
Claim 6
Independent Claim
120 words
A method for handing off a connection established between a mobile station and a currently serving base station on a current traffic channel to another traffic channel, the method comprising the steps of: measuring an uplink signal strength at which said mobile station is transmitting on said current traffic channel; determining if said measured uplink signal strength exceeds a first threshold; selecting a digital traffic channel as said another traffic channel if said measured uplink signal strength exceeds a second threshold greater than said first threshold; otherwise, selecting an analog traffic channel as said another traffic channel if said measured uplink signal strength fails to exceed said second threshold; and handing off said connection to said selected another traffic channel.
Claim 7
Independent Claim
120 words
A method for handing off a connection established between a mobile station and a currently serving base station on a current traffic channel to another traffic channel, the method comprising the steps of: measuring an uplink signal strength at which said mobile station is transmitting on said current traffic channel; determining if said measured uplink signal strength exceeds a first threshold; selecting a digital traffic channel as said another traffic channel if said measured uplink signal strength exceeds a second threshold greater than said first threshold; otherwise, selecting an analog traffic channel as said another traffic channel if said measured uplink signal strength fails to exceed said second threshold; and handing off said connection to said selected another traffic channel.
Claim 8
Dependent Claim
15 words
The method of claim 5, wherein said current traffic channel is an analog traffic channel.
Claim 9
Dependent Claim
15 words
The method of claim 5, wherein said current traffic channel is a digital traffic channel.
Claim 10
Dependent Claim
14 words
The method of claim 5, further comprising the steps of: varying said second threshold.
Claim 11
Independent Claim
119 words
A system for allocating a traffic channel to a mobile station at call set-up in a radiocommunication system having both analog traffic channels and digital traffic channels, the system comprising: means for measuring, at a base station, a signal strength received from said mobile station on a control channel; means for determining if said measured signal strength exceeds a first threshold sufficient to permit communication between said base station and said mobile station; means for allocating a digital traffic channel to said mobile station if said signal strength exceeds a second threshold greater than said first threshold; and means for allocating an analog traffic channel to said mobile station if said signal strength fails to exceed said second threshold.
Claim 12
Independent Claim
119 words
A system for allocating a traffic channel to a mobile station at call set-up in a radiocommunication system having both analog traffic channels and digital traffic channels, the system comprising: means for measuring, at a base station, a signal strength received from said mobile station on a control channel; means for determining if said measured signal strength exceeds a first threshold sufficient to permit communication between said base station and said mobile station; means for allocating a digital traffic channel to said mobile station if said signal strength exceeds a second threshold greater than said first threshold; and means for allocating an analog traffic channel to said mobile station if said signal strength fails to exceed said second threshold.
Claim 13
Dependent Claim
14 words
The system of claim 9, wherein said control channel is an analog control channel.
Claim 14
Dependent Claim
14 words
The system of claim 9, wherein said control channel is a digital control channel.
Claim 15
Dependent Claim
13 words
The system of claim 9, further comprising: means for varying said second threshold.
Claim 16
Independent Claim
126 words
A system for handing off a connection established between a mobile station and a currently serving base station on a current traffic channel to another traffic channel, the system comprising: means for measuring an uplink signal strength at which said mobile station is transmitting on said current traffic channel; means for determining if said measured uplink signal strength exceeds a first threshold; means for selecting a digital traffic channel as said another traffic channel if said measured uplink signal strength exceeds a second threshold greater than said first threshold; means for selecting an analog traffic channel as said another traffic channel if said measured uplink signal strength fails to exceed said second threshold; and means for handing off said connection to said selected another traffic channel.
Claim 17
Independent Claim
126 words
A system for handing off a connection established between a mobile station and a currently serving base station on a current traffic channel to another traffic channel, the system comprising: means for measuring an uplink signal strength at which said mobile station is transmitting on said current traffic channel; means for determining if said measured uplink signal strength exceeds a first threshold; means for selecting a digital traffic channel as said another traffic channel if said measured uplink signal strength exceeds a second threshold greater than said first threshold; means for selecting an analog traffic channel as said another traffic channel if said measured uplink signal strength fails to exceed said second threshold; and means for handing off said connection to said selected another traffic channel.
Claim 18
Dependent Claim
15 words
The system of claim 13, wherein said current traffic channel is an analog traffic channel.
Claim 19
Dependent Claim
15 words
The system of claim 13, wherein said current traffic channel is a digital traffic channel.
Claim 20
Dependent Claim
16 words
The system of claim 13, further comprising the steps of: means for varying said second threshold.
Claim 21
Independent Claim
91 words
A method for handing off a connection from an analog traffic channel comprising the steps of: providing a first signal strength threshold for evaluating handoffs from said analog traffic channel to another analog traffic channel; providing a second signal strength threshold for evaluating handoffs from said analog traffic channel to a digital traffic channel; and handing off said connection from said analog traffic channel to said digital traffic channel if a measured uplink signal strength exceeds said second signal strength threshold wherein said second threshold is higher than said first threshold.
Claim 22
Independent Claim
91 words
A method for handing off a connection from an analog traffic channel comprising the steps of: providing a first signal strength threshold for evaluating handoffs from said analog traffic channel to another analog traffic channel; providing a second signal strength threshold for evaluating handoffs from said analog traffic channel to a digital traffic channel; and handing off said connection from said analog traffic channel to said digital traffic channel if a measured uplink signal strength exceeds said second signal strength threshold wherein said second threshold is higher than said first threshold.
Claim 23
Dependent Claim
33 words
The method of claim 17, further comprising the step of: otherwise, handing off said connection to said another analog traffic channel if said measured uplink signal strength exceeds said first signal strength threshold.
Claim 24
Independent Claim
71 words
A method for handing off a connection from a first digital traffic channel to a second digital traffic channel comprising the steps of: measuring an uplink signal strength on said first digital traffic channel; determining if said measured uplink signal strength exceeds a first threshold; and handing off said connection to said second digital traffic channel if said measured uplink signal strength exceeds a second threshold greater than said first threshold.
Claim 25
Independent Claim
71 words
A method for handing off a connection from a first digital traffic channel to a second digital traffic channel comprising the steps of: measuring an uplink signal strength on said first digital traffic channel; determining if said measured uplink signal strength exceeds a first threshold; and handing off said connection to said second digital traffic channel if said measured uplink signal strength exceeds a second threshold greater than said first threshold.
Claim 26
Dependent Claim
20 words
The method of claim 19 further comprising the step of; otherwise, handing off said connection to an analog traffic channel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-29 | 2004-02-28 | 2004-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-29 | 2008-02-28 | 2008-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-29 | 2012-02-28 | 2012-08-29 | $7700.00 | Window Closed / Lapsed |