US5995498A
Expired / Lapsed
US
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Channel strength measurement shifting scheme
Assignee: Ericsson Inc
•
Filing: 1996-12-30
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Granted: 1999-11-30
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Expires: 2016-12-30
Abstract
Abstract In a radiocommunication system including at least one base station and a mobile station connected across a first radio channel to the base station, the signal strengths of the first radio channel and neighboring radio channels are measured in the mobile station to determine whether reselection to a neighboring radio channel is necessary. Each radio channel is measured at various points in a frame period or in different frame periods, the measurements occurring in different time slots. The points at which the signal strength measurements of each radio channel are made may be rotated among the different frame periods, the measurements may be made at random points in the different frame periods, or the starting times of the measurements may be rotated among or occur randomly in the different frame periods. Alternately, the signal strengths of each radio channel may be measured at different points in a single frame period. The measurements of the signal strength of the each radio channel are averaged, and the averaged measurements are compared to determine whether reselection from the first radio channel to a neighboring radio channel is necessary.
Inventors
- 👤 Carl Bray Toot, Jr.
- 👤 Keith William Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:24
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/0005; H04W36/0083; H04W36/0085; H04W36/0094; H04B; H04B17/00; H04B17/30; H04B17/382; H04W36/24; H04W36/30; H04W36/302; H04W48/00; H04W48/16
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
152 words
In a radiocommunication system including at least one base station and a mobile station connected across a first radio channel to the at least one base station, a method of measuring signal strengths of the first radio channel and neighboring radio channels in the mobile station to determine whether reselection to a neighboring radio channel is necessary, the method comprising the steps of: measuring a signal strength of the first radio channel at different points in different frame periods and averaging the measurements of the signal strength of the first radio channel; measuring a signal strength of at least one of the neighboring radio channels at different points in different frame periods and averaging the measurements of the signal strength of the at least one neighboring radio channel; and comparing the averaged measurements to determine whether reselection from the first radio channel to the at least one neighboring radio channel is necessary.
Claim 2
Dependent Claim
152 words
In a radiocommunication system including at least one base station and a mobile station connected across a first radio channel to the at least one base station, a method of measuring signal strengths of the first radio channel and neighboring radio channels in the mobile station to determine whether reselection to a neighboring radio channel is necessary, the method comprising the steps of: measuring a signal strength of the first radio channel at different points in different frame periods and averaging the measurements of the signal strength of the first radio channel; measuring a signal strength of at least one of the neighboring radio channels at different points in different frame periods and averaging the measurements of the signal strength of the at least one neighboring radio channel; and comparing the averaged measurements to determine whether reselection from the first radio channel to the at least one neighboring radio channel is necessary.
Claim 3
Dependent Claim
24 words
The method of claim 1, wherein the points at which measurements are made for each radio channel are rotated among the different frame periods.
Claim 4
Dependent Claim
22 words
The method of claim 1, wherein the measurements for each radio channel are made at random points in the different frame periods.
Claim 5
Dependent Claim
18 words
The method of claim 1, wherein starting times of the measurements are rotated among the different frame periods.
Claim 6
Dependent Claim
17 words
The method of claim 1, wherein starting times of the measurements in different frame periods are random.
Claim 7
Dependent Claim
22 words
The method of claim 1, wherein the measurements for each radio channel are made in different time slots in different frame periods.
Claim 8
Dependent Claim
152 words
In a radiocommunication system including at least one base station and a mobile station connected across a first radio channel to the at least one base station, a method of measuring signal strengths of the first radio channel and neighboring radio channels in the mobile station to determine whether reselection to a neighboring radio channel is necessary, the method comprising the steps of: measuring a signal strength of the first radio channel at regular intervals in a frame period and averaging the measurements of the signal strength of the first radio channel; measuring a signal strength of at least one of the neighboring radio channels at regular intervals in the frame period and averaging the measurements of the signal strength of the at least one neighboring radio channel; and comparing the averaged measurements to determine whether reselection from the first radio channel to the at least one neighboring radio channel is necessary.
Claim 9
Dependent Claim
152 words
In a radiocommunication system including at least one base station and a mobile station connected across a first radio channel to the at least one base station, a method of measuring signal strengths of the first radio channel and neighboring radio channels in the mobile station to determine whether reselection to a neighboring radio channel is necessary, the method comprising the steps of: measuring a signal strength of the first radio channel at regular intervals in a frame period and averaging the measurements of the signal strength of the first radio channel; measuring a signal strength of at least one of the neighboring radio channels at regular intervals in the frame period and averaging the measurements of the signal strength of the at least one neighboring radio channel; and comparing the averaged measurements to determine whether reselection from the first radio channel to the at least one neighboring radio channel is necessary.
Claim 10
Dependent Claim
22 words
The method of claim 7, wherein the measurements for each channel are made in different time slots in the same frame period.
Claim 11
Dependent Claim
137 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in different frame periods, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in different frame periods, and averages the measurements of the signal strength of the at least one radio neighboring channel, and wherein the mobile station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 12
Dependent Claim
137 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in different frame periods, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in different frame periods, and averages the measurements of the signal strength of the at least one radio neighboring channel, and wherein the mobile station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 13
Dependent Claim
24 words
The system of claim 9, wherein the points at which measurements for each radio channel are made are rotated among the different frame periods.
Claim 14
Dependent Claim
22 words
The system of claim 9, wherein the measurements for each radio channel are made at random points in the different frame periods.
Claim 15
Dependent Claim
18 words
The system of claim 9, wherein starting times of the measurements are rotated among the different frame periods.
Claim 16
Dependent Claim
17 words
The system of claim 9, wherein starting times of the measurements in different frame periods are random.
Claim 17
Dependent Claim
22 words
The system of claim 9, wherein the measurements for each radio channel are made in different time slots in different frame periods.
Claim 18
Dependent Claim
137 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in a frame period, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in the frame period, and averages the measurements of the signal strength of the at least one neighboring radio channel, and wherein the mobile station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 19
Dependent Claim
137 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in a frame period, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in the frame period, and averages the measurements of the signal strength of the at least one neighboring radio channel, and wherein the mobile station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 20
Dependent Claim
22 words
The system of claim 15, wherein the measurements for each radio channel are made in different time slots in the frame period.
Claim 21
Dependent Claim
151 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in different frame periods, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in different frame periods, averages the measurements of the signal strength of the at least one radio neighboring channel, and reports the averaged measurements to said at least one base station, and wherein said at least one base station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 22
Dependent Claim
151 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in different frame periods, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in different frame periods, averages the measurements of the signal strength of the at least one radio neighboring channel, and reports the averaged measurements to said at least one base station, and wherein said at least one base station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 23
Dependent Claim
24 words
The system of claim 17, wherein the points at which measurements for each radio channel are made are rotated among the different frame periods.
Claim 24
Dependent Claim
22 words
The system of claim 17, wherein the measurements for each radio channel are made at random points in the different frame periods.
Claim 25
Dependent Claim
18 words
The system of claim 17, wherein starting times of the measurements are rotated among the different frame periods.
Claim 26
Dependent Claim
17 words
The system of claim 17, wherein starting times of the measurements in different frame periods are random.
Claim 27
Dependent Claim
22 words
The system of claim 17, wherein the measurements for each radio channel are made in different time slots in different frame periods.
Claim 28
Dependent Claim
151 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in a frame period, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in the frame period, averages the measurements of the signal strength of the at least one neighboring radio channel, and reports the averaged measurements to said at least one base station, and wherein said at least one base station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 29
Dependent Claim
151 words
A radiocommunication system comprising: at least one base station; and a mobile station connected to said at least one base station across a first radio channel, wherein said mobile station measures a signal strength of the first radio channel at different points in a frame period, averages the measurements of the signal strength of the first radio channel, measures a signal strength of at least one neighboring radio channel at different points in the frame period, averages the measurements of the signal strength of the at least one neighboring radio channel, and reports the averaged measurements to said at least one base station, and wherein said at least one base station determines whether reselection from the first radio channel to the at least one neighboring radio channel is necessary by comparing the averaged measurements of the signal strength of the first radio channel and the at least one neighboring radio channel.
Claim 30
Dependent Claim
22 words
The system of claim 23, wherein the measurements for each radio channel are made in different time slots in the frame period.
Claim 31
Dependent Claim
37 words
The method of claim 1, wherein the signal strengths are measured in slots containing control data and in slots containing traffic data in the first radio channel and in at least one of the neighboring radio channels.
Claim 32
Dependent Claim
37 words
The method of claim 7, wherein the signal strengths are measured in slots containing control data and in slots containing traffic data in the first radio channel and in at least one of the neighboring radio channels.
Claim 33
Dependent Claim
37 words
The system of claim 9, wherein the signal strengths are measured in slots containing control data and in slots containing traffic data in the first radio channel and in at least one of the neighboring radio channels.
Claim 34
Dependent Claim
37 words
The system of claim 15, wherein the signal strengths are measured in slots containing control data and in slots containing traffic data in the first radio channel and in at least one of the neighboring radio channels.
Claim 35
Dependent Claim
37 words
The system of claim 17, wherein the signal strengths are measured in slots containing control data and in slots containing traffic data in the first radio channel and in at least one of the neighboring radio channels.
Claim 36
Dependent Claim
37 words
The system of claim 23, wherein the signal strengths are measured in slots containing control data and in slots containing traffic data in the first radio channel and in at least one of the neighboring radio channels.
Claim 37
Dependent Claim
25 words
The method of claim 1, wherein the neighboring channels include channels in the same cell as the first radio channel and channels in neighboring cells.
Claim 38
Dependent Claim
25 words
The method of claim 7, wherein the neighboring channels include channels in the same cell as the first radio channel and channels in neighboring cells.
Claim 39
Dependent Claim
25 words
The system of claim 9, wherein the neighboring channels include channels in the same cell as the first radio channel and channels in neighboring cells.
Claim 40
Dependent Claim
25 words
The system of claim 15, wherein the neighboring channels include channels in the same cell as the first radio channel and channels in neighboring cells.
Claim 41
Dependent Claim
25 words
The system of claim 17, wherein the neighboring channels include channels in the same cell as the first radio channel and channels in neighboring cells.
Claim 42
Dependent Claim
25 words
The system of claim 23, wherein the neighboring channels include channels in the same cell as the first radio channel and channels in neighboring cells.
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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) | 2002-11-29 | 2003-05-31 | 2003-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-29 | 2007-05-31 | 2007-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-29 | 2011-05-31 | 2011-11-30 | $7700.00 | Window Closed / Lapsed |