Patent US2805677A successfully refreshed from Google Patents.
Patent US5539748A successfully refreshed from Google Patents.
US5539748A
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US
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Enhanced sleep mode in radiocommunication systems
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1994-10-31
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Granted: 1996-07-23
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Expires: 2014-10-31
Abstract
Abstract A method and system for providing an enhanced sleep mode for remote units in a radiocommunication system are described. Measurement periodicity for control channels of neighboring cells is optimized. Paging frame classes can also be temporarily modified to extend sleep periods.
Inventors
- 👤 Alex K. Raith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:29
CPC Classifications
H; H04; H04W; H04W48/00; H04W48/20; H04W68/00; H04W68/02; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2643; H04B7/2656; H04L; H04L1/00; H04L1/004; H04L1/0045; H04L1/0046; H04L1/0056; H04L1/0057; H04L1/0059; H04L1/0061; H04L1/0071; H04L1/0072; H04L1/0078; H04L1/0083; H04L1/08; H04L1/12; H04L1/16; H04L1/1607; H04L1/1614; H04L1/1685; H04L1/18; H04L1/1803; H04L1/1809; H04L1/1829; H04L1/1848; H04L1/1867; H04L1/188; H04L1/20; H04L9/00; H04L9/40; H04W48/16; H04W68/025; H04W72/00; H04W72/04; H04W72/044; H04W72/0446; H04L1/0001; H04L1/0002; H04L2001/0092; H04L2001/0093; H04W48/08; H04W48/10; H04W52/00; H04W52/02; H04W52/0209; H04W52/0212; H04W52/0225; H04W52/0245; H04W88/00; H04W88/02; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
111 words
A method for evaluating a plurality of control channels in a radiocommunication system comprising the steps of: providing a default frequency of signal strength measurement for at least one of said plurality of control channels to be made by a remote station which is being served by a current control channel; reducing said default frequency of signal strength measurement for at least one of said plurality of control channels if said current control channel has been serving said remote station for greater than a predetermined time period; and scanning, at said remote station, said at least one of said plurality of control channels at said reduced default frequency signal strength measurement.
Claim 2
Independent Claim
111 words
A method for evaluating a plurality of control channels in a radiocommunication system comprising the steps of: providing a default frequency of signal strength measurement for at least one of said plurality of control channels to be made by a remote station which is being served by a current control channel; reducing said default frequency of signal strength measurement for at least one of said plurality of control channels if said current control channel has been serving said remote station for greater than a predetermined time period; and scanning, at said remote station, said at least one of said plurality of control channels at said reduced default frequency signal strength measurement.
Claim 3
Dependent Claim
30 words
The method of claim 1, wherein said step of providing further comprises the step of: transmitting, on said current control channel, said default frequency for scanning by said remote station.
Claim 4
Independent Claim
135 words
A method for evaluating a plurality of control channels in a radiocommunication system comprising the steps of: providing a default frequency of signal strength measurement for at least one of said plurality of control channels to be made by a remote station; reducing said default frequency of signal strength measurement for at least one of said plurality of control channels if a first change of an average received signal strength on a current serving control channel is less than a first predetermined threshold and if a second change of an average received signal strength on said plurality of control channels is less than a second predetermined threshold; and measuring, at said remote station, a signal strength of said at least one of said plurality of control channels at said reduced frequency of signal strength measurement.
Claim 5
Independent Claim
135 words
A method for evaluating a plurality of control channels in a radiocommunication system comprising the steps of: providing a default frequency of signal strength measurement for at least one of said plurality of control channels to be made by a remote station; reducing said default frequency of signal strength measurement for at least one of said plurality of control channels if a first change of an average received signal strength on a current serving control channel is less than a first predetermined threshold and if a second change of an average received signal strength on said plurality of control channels is less than a second predetermined threshold; and measuring, at said remote station, a signal strength of said at least one of said plurality of control channels at said reduced frequency of signal strength measurement.
Claim 6
Dependent Claim
35 words
The method of claim 3, wherein said step of providing further comprises the step of: transmitting, on said current control channel, said default frequency of signal strength measurement to be made by said remote station.
Claim 7
Independent Claim
120 words
A method for evaluating a plurality of control channels in a radiocommunication system comprising the steps of: providing a default frequency of signal strength measurement for at least one of said plurality of control channels to be made by a remote station; reducing said default frequency of signal strength measurement for at least one of said plurality of control channels if a change of a difference between an average received signal strength of a current serving control channel and one of said plurality of control channels is less than a predetermined threshold; and measuring, at said remote station, a signal strength of said at least one of said plurality of control channels at said reduced frequency of signal strength measurement.
Claim 8
Independent Claim
120 words
A method for evaluating a plurality of control channels in a radiocommunication system comprising the steps of: providing a default frequency of signal strength measurement for at least one of said plurality of control channels to be made by a remote station; reducing said default frequency of signal strength measurement for at least one of said plurality of control channels if a change of a difference between an average received signal strength of a current serving control channel and one of said plurality of control channels is less than a predetermined threshold; and measuring, at said remote station, a signal strength of said at least one of said plurality of control channels at said reduced frequency of signal strength measurement.
Claim 9
Dependent Claim
35 words
The method of claim 5, wherein said step of providing further comprises the step of: transmitting, on said current control channel, said default frequency of signal strength measurement to be made by said remote station.
Claim 10
Dependent Claim
72 words
A remote station comprising: a receiver for receiving, on a current control channel which is serving said remote stations, neighboring lists identifying other control channels; means for scanning said other control channels at a default scanning rate; and means for reducing said default scanning rate for at least one of said other control channels if said current control channel has been serving said remote station for greater than a predetermined time period.
Claim 11
Dependent Claim
72 words
A remote station comprising: a receiver for receiving, on a current control channel which is serving said remote stations, neighboring lists identifying other control channels; means for scanning said other control channels at a default scanning rate; and means for reducing said default scanning rate for at least one of said other control channels if said current control channel has been serving said remote station for greater than a predetermined time period.
Claim 12
Dependent Claim
20 words
The remote station of claim 7, wherein said default scanning rate is received by said receiver in supervisory data messages.
Claim 13
Dependent Claim
91 words
A remote station comprising: a receiver for receiving, on a current control channel, neighboring lists identifying other control channels; means for scanning said other control channels at a default scanning rate; and means for reducing said default scanning rate for at least one of said other control channels if a change of an average received signal strength on said current control channel is less than a first predetermined threshold and if a change of an average received signal strength on said other control channels is less than a second predetermined threshold.
Claim 14
Dependent Claim
91 words
A remote station comprising: a receiver for receiving, on a current control channel, neighboring lists identifying other control channels; means for scanning said other control channels at a default scanning rate; and means for reducing said default scanning rate for at least one of said other control channels if a change of an average received signal strength on said current control channel is less than a first predetermined threshold and if a change of an average received signal strength on said other control channels is less than a second predetermined threshold.
Claim 15
Dependent Claim
20 words
The remote station of claim 9, wherein said default scanning rate is received by said receiver in supervisory data messages.
Claim 16
Dependent Claim
79 words
A remote station comprising: a receiver for receiving, on a current control channel, neighboring lists identifying other control channels; means for scanning said other control channels at a default scanning rate; and means for reducing said default scanning rate for at least one of said other control channels if a change of a difference between an average received signal strength of said current control channel and one of said plurality of control channels is less than a predetermined threshold.
Claim 17
Dependent Claim
79 words
A remote station comprising: a receiver for receiving, on a current control channel, neighboring lists identifying other control channels; means for scanning said other control channels at a default scanning rate; and means for reducing said default scanning rate for at least one of said other control channels if a change of a difference between an average received signal strength of said current control channel and one of said plurality of control channels is less than a predetermined threshold.
Claim 18
Dependent Claim
20 words
The remote station of claim 11, wherein said default scanning rate is received by said receiver in supervisory data messages.
Claim 19
Independent Claim
78 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels for use by said remote station; and if said serving control channel has been serving said remote station for greater than a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 20
Independent Claim
78 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels for use by said remote station; and if said serving control channel has been serving said remote station for greater than a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 21
Dependent Claim
26 words
The method of claim 13, wherein said at least one of said plurality of control channels is provided to said remote station in a neighbor list.
Claim 22
Dependent Claim
31 words
The method of claim 13, wherein said at least one of said plurality of control channels includes all control channels which are provided to said remote station on a neighbor list.
Claim 23
Dependent Claim
36 words
The method of claim 13, wherein said at least one of said plurality of control channels includes all control channels which are provided to said remote station on a neighbor list and said serving control channel.
Claim 24
Dependent Claim
22 words
The method of claim 13, further comprising the step of: returning to said default scanning frequency if said serving channel is changed.
Claim 25
Dependent Claim
19 words
The method of claim 13, wherein said plurality of control channels to be scanned include said serving control channel.
Claim 26
Dependent Claim
20 words
The method of claim 13, wherein said step of modifying further includes the step of: reducing said default scanning frequency.
Claim 27
Independent Claim
79 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels; and if a change in an average received signal strength on said serving control channel is less than a predetermined threshold for a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 28
Independent Claim
79 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels; and if a change in an average received signal strength on said serving control channel is less than a predetermined threshold for a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 29
Dependent Claim
29 words
The method of claim 20, wherein said at least one of said plurality of control channels is a control channel provided to said remote station in a neighbor list.
Claim 30
Dependent Claim
31 words
The method of claim 20, wherein said at least one of said plurality of control channels includes all control channels which are provided to said remote station on a neighbor list.
Claim 31
Dependent Claim
36 words
The method of claim 20, wherein said at least one of said plurality of control channels includes all control channels which are provided to said remote station on a neighbor list and said serving control channel.
Claim 32
Dependent Claim
27 words
The method of claim 20, further comprising the step of: returning to said default scanning frequency if said change is no longer less than said predetermined threshold.
Claim 33
Dependent Claim
21 words
The method of claim 20, wherein said at least one of said plurality of control channels includes said serving control channel.
Claim 34
Independent Claim
99 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels; and if a difference between a change in an average received signal strength on said serving control channel and a change in an average received signal strength on one of said plurality of control channels is less than a predetermined threshold for a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 35
Independent Claim
99 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels; and if a difference between a change in an average received signal strength on said serving control channel and a change in an average received signal strength on one of said plurality of control channels is less than a predetermined threshold for a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 36
Dependent Claim
21 words
The method of claim 26, wherein said at least one of said plurality of control channels is said serving control channel.
Claim 37
Dependent Claim
24 words
The method of claim 26, wherein said at least one of said plurality of control channels is all of said plurality of control channels.
Claim 38
Dependent Claim
27 words
The method of claim 26, further comprising the step of: returning to said default scanning frequency if said change is no longer less than said predetermined threshold.
Claim 39
Independent Claim
96 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels; and if a change in a difference between an average received signal strength on said serving control channel and an average received signal strength on one of said plurality of control channels is less than a predetermined threshold for a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 40
Independent Claim
96 words
A method for scanning a plurality of control channels by a remote station which is listening to a serving control channel comprising the steps of: providing a default scanning frequency for said plurality of control channels; and if a change in a difference between an average received signal strength on said serving control channel and an average received signal strength on one of said plurality of control channels is less than a predetermined threshold for a predetermined period of time, then modifying said default scanning frequency for at least one of said plurality of control channels.
Claim 41
Dependent Claim
21 words
The method of claim 30, wherein said at least one of said plurality of control channels is said serving control channel.
Claim 42
Dependent Claim
29 words
The method of claim 30, wherein said at least one of said serving control channel and said plurality of control channels is all of said plurality of control channels.
References Cited (Backward Citations)
US4127744A
Cited
US4527284A
Cited
US5122795A
Cited
US4731814A
Cited
EP0335846A1
Cited
US5128938A
Cited
US5081704A
Cited
EP0445887A2
Cited
WO1992010042A1
Cited
US5375254A
Cited
US5325088A
Cited
US5301225A
Cited
US5353332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-23 | 2000-01-22 | 2000-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-23 | 2004-01-22 | 2004-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-23 | 2008-01-22 | 2008-07-23 | $7700.00 | Window Closed / Lapsed |