Patent US6970708B1 successfully refreshed from Google Patents.
US6970708B1
Expired / Lapsed
US
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System and method for improving channel monitoring in a cellular system
Assignee: Ericsson Inc
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Filing: 2000-02-05
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Granted: 2005-11-29
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Expires: 2020-02-05
Abstract
Abstract The present invention relates to a mobile station capable of determining its current location within a wireless communication system. The mobile station periodically generates an estimate of its current location or mobility and then monitors channels for channel selection based thereon in order to minimize frame stealing while in active mode and save energy during idle mode. The same information is also useful for determining which cells to monitor and controlling how frequently position or changes of position estimates are made. Although the invention requires a determination of the mobile station's position or mobility, the manner in which the mobile station determines these characteristics may vary. A separate positioning receiver, terrestrial or satellite based, such as that used with the Global Positioning System, may allow the mobile station to calculate its position. Alternatively, the mobile station may monitor signals provided during communications with the base stations to calculate a relative position. In yet another embodiment, the base stations and associated cellular systems may cooperate to determine a particular mobile station's position and then download the position to the mobile station.
Inventors
- 👤 Alex Krister Raith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:51
CPC Classifications
H; H04; H04W; H04W24/00; H04W24/10; H04L; H04L1/00; H04L1/20; H04W36/00; H04W36/0005; H04W36/0083; H04W36/0085; H04W36/24; H04W36/30; H04W36/302; H04W36/00835; H04W40/00; H04W40/24; H04W40/248; H04W64/00; H04W72/00; H04W72/02; H04W72/50; H04W72/54; H04W72/542; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
96 words
A method of channel selection for a mobile station comprising: determining a position of said mobile station; periodically performing channel quality measurements of signals transmitted from one or more base stations, wherein the frequency of performing said channel quality measurements is based on said position of said mobile station independent of the speed of said mobile station; and wherein said frequency of performing said channel quality measurements is a function of the relative position of said mobile station with respect to a first base station serving said mobile station and at least one additional base station.
Claim 2
Independent Claim
96 words
A method of channel selection for a mobile station comprising: determining a position of said mobile station; periodically performing channel quality measurements of signals transmitted from one or more base stations, wherein the frequency of performing said channel quality measurements is based on said position of said mobile station independent of the speed of said mobile station; and wherein said frequency of performing said channel quality measurements is a function of the relative position of said mobile station with respect to a first base station serving said mobile station and at least one additional base station.
Claim 3
Dependent Claim
29 words
The channel selection method of claim 1 wherein the position of said at least one additional base station is transmitted to said mobile station by said first base station.
Claim 4
Dependent Claim
34 words
The channel selection method of claim 2 wherein the position of said at least one additional base station is included in a neighbor list transmitted to said mobile station by said first base station.
Claim 5
Dependent Claim
29 words
The channel selection method of claim 1 wherein said channel quality measurements are performed by said mobile station while said mobile station is engaged in a packet switched call.
Claim 6
Dependent Claim
29 words
The channel selection method of claim 1 wherein said channel quality measurements are performed by said mobile station while said mobile station is engaged in a circuit switched call.
Claim 7
Dependent Claim
19 words
The channel selection method of claim 1 wherein said mobile station uses said channel quality measurement for cell reselection.
Claim 8
Dependent Claim
27 words
The channel selection method of claim 1 further including transmitting said channel quality measurements from said mobile station to a first base station serving said mobile station.
Claim 9
Dependent Claim
23 words
The channel selection method of claim 7 further including making hand-off determinations at said first base station based on said channel quality measurements.
Claim 10
Independent Claim
75 words
A method of channel selection for a mobile station comprising: determining a position of said mobile station; periodically performing channel quality measurements of signals transmitted from one or more base stations, wherein the frequency of performing said channel quality measurements is a function of said position of said mobile station; and wherein said frequency of performing said channel quality measurements is a function of the length of time said mobile station remains in said position.
Claim 11
Independent Claim
75 words
A method of channel selection for a mobile station comprising: determining a position of said mobile station; periodically performing channel quality measurements of signals transmitted from one or more base stations, wherein the frequency of performing said channel quality measurements is a function of said position of said mobile station; and wherein said frequency of performing said channel quality measurements is a function of the length of time said mobile station remains in said position.
Claim 12
Dependent Claim
38 words
The channel selection method of claim 9 wherein said frequency of performing said channel quality measurements is a function of the relative position of said mobile station with respect to a first base station serving said mobile station.
Claim 13
Dependent Claim
27 words
The channel selection method of claim 9 wherein said channel quality measurements are performed by said mobile station while said mobile station is in an idle mode.
Claim 14
Independent Claim
83 words
A method of determining the position of a mobile station comprising: determining a position of said mobile station at a first time instant; updating said position periodically, wherein a frequency of said updating is a function of said position of said mobile station; wherein said frequency of updating said position is a function of the mobility of said mobile station; and wherein said frequency of updating said position is a function of the rate of change of said position of said mobile station.
Claim 15
Independent Claim
83 words
A method of determining the position of a mobile station comprising: determining a position of said mobile station at a first time instant; updating said position periodically, wherein a frequency of said updating is a function of said position of said mobile station; wherein said frequency of updating said position is a function of the mobility of said mobile station; and wherein said frequency of updating said position is a function of the rate of change of said position of said mobile station.
Claim 16
Independent Claim
83 words
A method of determining the position of a mobile station comprising: determining a position of said mobile station at a first time instant; updating said position periodically, wherein a frequency of said updating is a function of said position of said mobile station; wherein said frequency of updating said position is a function of the mobility of said mobile station; and wherein said frequency of updating said position is a function of the length of time said mobile station remains in said position.
Claim 17
Independent Claim
83 words
A method of determining the position of a mobile station comprising: determining a position of said mobile station at a first time instant; updating said position periodically, wherein a frequency of said updating is a function of said position of said mobile station; wherein said frequency of updating said position is a function of the mobility of said mobile station; and wherein said frequency of updating said position is a function of the length of time said mobile station remains in said position.
Claim 18
Dependent Claim
111 words
A mobile station comprising: a transceiver to transmit and receive radio frequency signals; a signal processor operatively connected to said transceiver to periodically perform channel quality measurements on selected signals received by said transceiver; control logic to control said signal processor and said transceiver to vary the frequency of performing said channel quality measurements based on the position of said mobile station independent of the speed of said mobile station; and wherein said control logic varies the frequency of performing said channel quality measurements based on the relative position of said mobile station with respect to a first base station serving said mobile station and at least one additional base station.
Claim 19
Dependent Claim
111 words
A mobile station comprising: a transceiver to transmit and receive radio frequency signals; a signal processor operatively connected to said transceiver to periodically perform channel quality measurements on selected signals received by said transceiver; control logic to control said signal processor and said transceiver to vary the frequency of performing said channel quality measurements based on the position of said mobile station independent of the speed of said mobile station; and wherein said control logic varies the frequency of performing said channel quality measurements based on the relative position of said mobile station with respect to a first base station serving said mobile station and at least one additional base station.
Claim 20
Dependent Claim
19 words
The mobile station of claim 14 further including a positioning receiver to determine the position of said mobile station.
Claim 21
Dependent Claim
91 words
A mobile station comprising: a transceiver to transmit and receive radio frequency signals; a signal processor operatively connected to said transceiver to periodically perform channel quality measurements on selected signals received by said transceiver; control logic to control said signal processor and said transceiver to vary the frequency of performing said channel quality measurements as a function of the position of said mobile station; and wherein said control logic varies the frequency of performing said channel quality measurements based on the length of time said mobile station remains in said position.
Claim 22
Dependent Claim
91 words
A mobile station comprising: a transceiver to transmit and receive radio frequency signals; a signal processor operatively connected to said transceiver to periodically perform channel quality measurements on selected signals received by said transceiver; control logic to control said signal processor and said transceiver to vary the frequency of performing said channel quality measurements as a function of the position of said mobile station; and wherein said control logic varies the frequency of performing said channel quality measurements based on the length of time said mobile station remains in said position.
Claim 23
Dependent Claim
39 words
The mobile station of claim 16 wherein said control logic varies the frequency of performing said channel quality measurements based on the relative position of said mobile station with respect to a first base station serving said mobile station.
Claim 24
Dependent Claim
82 words
A mobile station comprising: a transceiver transmitting and receiving radio frequency signals; a positioning receiver periodically determining a position of said mobile station; control logic controlling said transceiver and said positioning receiver, wherein said control logic varies the frequency of determining said position of said mobile station as a function of said position; and wherein said control logic varies the frequency of determining said position of said mobile station based on the length of time said mobile station remains in said position.
Claim 25
Dependent Claim
82 words
A mobile station comprising: a transceiver transmitting and receiving radio frequency signals; a positioning receiver periodically determining a position of said mobile station; control logic controlling said transceiver and said positioning receiver, wherein said control logic varies the frequency of determining said position of said mobile station as a function of said position; and wherein said control logic varies the frequency of determining said position of said mobile station based on the length of time said mobile station remains in said position.
Claim 26
Independent Claim
81 words
A method of controlling a mobile station comprising: determining a position of said mobile station; performing a periodic task, wherein the frequency of performing said task is based on said position of said mobile station independent of the speed of said mobile station; and wherein said frequency of performing said periodic task is a function of the relative position of said mobile station with respect to a first base station serving said mobile station and at least one additional base station.
Claim 27
Independent Claim
81 words
A method of controlling a mobile station comprising: determining a position of said mobile station; performing a periodic task, wherein the frequency of performing said task is based on said position of said mobile station independent of the speed of said mobile station; and wherein said frequency of performing said periodic task is a function of the relative position of said mobile station with respect to a first base station serving said mobile station and at least one additional base station.
Claim 28
Independent Claim
60 words
A method of controlling a mobile station comprising: determining a position of said mobile station; performing a periodic task, wherein the frequency of performing said task is a function of said position of said mobile station; and wherein said frequency of performing said periodic task is a function of the length of time said mobile station remains in said position.
Claim 29
Independent Claim
60 words
A method of controlling a mobile station comprising: determining a position of said mobile station; performing a periodic task, wherein the frequency of performing said task is a function of said position of said mobile station; and wherein said frequency of performing said periodic task is a function of the length of time said mobile station remains in said position.
Claim 30
Dependent Claim
36 words
The control method of claim 20 wherein said frequency of performing said periodic task is a function of the relative position of said mobile station with respect to a first base station serving said mobile station.
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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) | 2008-11-28 | 2009-05-30 | 2009-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-11-28 | 2013-05-30 | 2013-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-11-28 | 2017-05-30 | 2017-11-29 | $7700.00 | Window Closed / Lapsed |