US5570467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for locating a digital control channel in a radiocommunication system
Assignee: Optis Wireless Technology LLC
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Filing: 1995-06-07
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Granted: 1996-10-29
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Expires: 2015-06-07
Abstract
Abstract A method and system for locating control channels, particularly digital control channels, are described. By grouping the channels which are candidates for carrying supervisory messages in blocks indicative of their relative likelihood for being used as control channels, a mobile station can begin its search for a control channel with channels which are most likely to actually be control channels. Placing location information on other channels allows the mobile station to be redirected to a control channel when it reads one of these other channels. Similarly, by placing information describing the location of a control channel in a message associated with handoff, a mobile station avoids the necessity of having to relocate a new control channel associated with the base station to which the mobile has been handed off.
Inventors
- 👤 Francois Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:28
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: 17
Claim 1
Independent Claim
79 words
A method for locating a control channel in a radiocommunication system comprising the steps of: providing a connection between a mobile station and a base station in said radiocommunication system using a traffic channel; sending a message when said connection is being terminated, from said base station to said mobile station which includes location information pointing to said control channel; and tuning to said control channel, at said mobile station, using said location information received from said base station.
Claim 2
Independent Claim
79 words
A method for locating a control channel in a radiocommunication system comprising the steps of: providing a connection between a mobile station and a base station in said radiocommunication system using a traffic channel; sending a message when said connection is being terminated, from said base station to said mobile station which includes location information pointing to said control channel; and tuning to said control channel, at said mobile station, using said location information received from said base station.
Claim 3
Dependent Claim
14 words
The method of claim 1, wherein said control channel is a digital control channel.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein said message is release message.
Claim 5
Dependent Claim
110 words
A radiocommunication system comprising: a plurality of control channels over which base stations transmit and receive supervisory data; a plurality of traffic channels over which base stations transmit and receive traffic data; at least one mobile station which is connected to one of said base stations using one of said plurality traffic channels; and means, in said one of said base stations, for transmitting a message over said one of said plurality of traffic channels to said at least one mobile station when said at least one mobile station is disconnecting from said one of said base stations, said message including information which points to one of said control channels.
Claim 6
Dependent Claim
110 words
A radiocommunication system comprising: a plurality of control channels over which base stations transmit and receive supervisory data; a plurality of traffic channels over which base stations transmit and receive traffic data; at least one mobile station which is connected to one of said base stations using one of said plurality traffic channels; and means, in said one of said base stations, for transmitting a message over said one of said plurality of traffic channels to said at least one mobile station when said at least one mobile station is disconnecting from said one of said base stations, said message including information which points to one of said control channels.
Claim 7
Dependent Claim
18 words
The radiocommuication system of claim 4 wherein said one of said control channel is a digital control channel.
Claim 8
Dependent Claim
13 words
The radiocommuication system of claim 4 wherein said message is a release message.
Claim 9
Dependent Claim
57 words
A base station comprising: a transmitter for transmitting supervisory data messages on a control channel and traffic messages on a plurality of traffic channels, said traffic messages including release messages; and means for determining information included in said supervisory data messages and said traffic messages, wherein said release messages include a field pointing toward said control channel.
Claim 10
Dependent Claim
57 words
A base station comprising: a transmitter for transmitting supervisory data messages on a control channel and traffic messages on a plurality of traffic channels, said traffic messages including release messages; and means for determining information included in said supervisory data messages and said traffic messages, wherein said release messages include a field pointing toward said control channel.
Claim 11
Dependent Claim
15 words
The base station of claim 7, wherein said control channel is a digital control channel.
Claim 12
Dependent Claim
79 words
A mobile station comprising: a receiver for receiving supervisory data messages on any of a plurality of control channels and traffic messages on any of a plurality of traffic channels; and a processing unit for extracting location information from a termination message received on one of said plurality of traffic channels which indicates a location of one of said plurality of control channels and for commanding said receiver to tune to said one of said plurality of control channels.
Claim 13
Dependent Claim
79 words
A mobile station comprising: a receiver for receiving supervisory data messages on any of a plurality of control channels and traffic messages on any of a plurality of traffic channels; and a processing unit for extracting location information from a termination message received on one of said plurality of traffic channels which indicates a location of one of said plurality of control channels and for commanding said receiver to tune to said one of said plurality of control channels.
Claim 14
Dependent Claim
20 words
The mobile station of claim 9, wherein said one of said plurality of control channels is a digital control channel.
Claim 15
Independent Claim
49 words
A method for disconnecting a mobile station comprising the steps of: receiving a disconnect message over an air interface; acquiring location information from said disconnect message which points to the location of a control channel; disconnecting said mobile station; and tuning to said control channel using said location information.
Claim 16
Independent Claim
49 words
A method for disconnecting a mobile station comprising the steps of: receiving a disconnect message over an air interface; acquiring location information from said disconnect message which points to the location of a control channel; disconnecting said mobile station; and tuning to said control channel using said location information.
Claim 17
Dependent Claim
13 words
The method of claim 11, wherein said control channel is a digital 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) | 1999-10-29 | 2000-04-29 | 2000-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-29 | 2004-04-29 | 2004-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-29 | 2008-04-29 | 2008-10-29 | $7700.00 | Window Closed / Lapsed |