US6456858B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and methods in a dual mode wireless system for transmitting rescan command based on detected network conditions
Assignee: Cellco Partnership
•
Filing: 1998-12-21
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Granted: 2002-09-24
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Expires: 2018-12-21
Abstract
Abstract A dual-mode wireless telephone communications system, having a digital wireless communications system (e.g., CDMA) and a second wireless communications system, selectively outputs a rescan command from the digital wireless system to at least one selected dual-mode wireless telephone. The digital wireless communications system outputs the rescan command based on a detected traffic condition in the digital wireless system. The rescan command, output to the selected dual-mode wireless telephone via a digital wireless signaling channel, instructs the selected dual-mode wireless telephone to register with an alternative wireless communications system (e.g., AMPS) when the dual-mode wireless telephone is in an idle state. Hence, the digital wireless system can selectively limit access to the CDMA system by dual-mode telephones using proactive rescan commands that avoid the necessity of hard handoff or call transfer procedures normally encountered when initiating a wireless telephone call on the digital wireless communications system.
Inventors
- 👤 Cory W. Streter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:45
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/06
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
90 words
A method in a dual-mode wireless communications system having a digital wireless communications system overlying a second wireless communications system, the method comprising: detecting a prescribed traffic condition in the digital wireless communications system; and outputting a control command from the digital wireless communications system to at least one selected dual-mode wireless telephone, having registered with the digital wireless communications system, instructing the at least one selected dual-mode wireless telephone to register with the second wireless communications system based on the detected prescribed traffic condition if in an idle state.
Claim 2
Independent Claim
90 words
A method in a dual-mode wireless communications system having a digital wireless communications system overlying a second wireless communications system, the method comprising: detecting a prescribed traffic condition in the digital wireless communications system; and outputting a control command from the digital wireless communications system to at least one selected dual-mode wireless telephone, having registered with the digital wireless communications system, instructing the at least one selected dual-mode wireless telephone to register with the second wireless communications system based on the detected prescribed traffic condition if in an idle state.
Claim 3
Dependent Claim
27 words
The method of claim 1 , wherein the step of detecting a prescribed traffic condition comprises detecting the prescribed traffic condition by a mobile telephone switching office.
Claim 4
Dependent Claim
50 words
The method of claim 2 , wherein the outputting step comprises: generating the control command in the mobile telephone switching office in response to the detection of the prescribed traffic condition; and transmitting the control command from a selected digital wireless base station in communication with the dual-mode wireless telephone.
Claim 5
Dependent Claim
20 words
The method of claim 3 , wherein the transmitting step includes transmitting the control command on a prescribed signaling channel.
Claim 6
Dependent Claim
27 words
The method of claim 2 , wherein the step of detecting a prescribed traffic condition further includes detecting a facilities failure within the digital wireless communications system.
Claim 7
Dependent Claim
49 words
The method of claim 5 , wherein the step of detecting a prescribed traffic condition further includes identifying the facilities failure as at least one of a blocking in the mobile telephone switching office and a failure in a trunk line in communication with the mobile telephone switching office.
Claim 8
Dependent Claim
65 words
The method of claim 2 , wherein the step of detecting a prescribed traffic condition further comprises: detecting base station blockage factors by a base station transceiver of the digital wireless communications system; reporting the base station blockage factors to the mobile telephone switching office; and determining the prescribed traffic condition in the mobile telephone switching office based on the reported base station blockage factors.
Claim 9
Dependent Claim
46 words
The method of claim 7 , wherein the step of detecting base station blockage factors includes measuring at least one of an airlink interference overload and an airlink capacity overload by the base station transceiver on at least one of a forward link and reverse link.
Claim 10
Dependent Claim
26 words
The method of claim 7 , wherein the step of detecting base station blockage factors includes detecting a hardware overload condition at the base station transceiver.
Claim 11
Dependent Claim
39 words
The method of claim 1 , further comprising selecting the at least one selected dual-mode wireless telephone, from a plurality of dual-mode wireless telephones in communication with the digital wireless communications system, based on a corresponding prescribed service condition.
Claim 12
Dependent Claim
31 words
The method of claim 10 , wherein the outputting step includes specifying a minimum time interval for registration with the second wireless communications system based on the corresponding prescribed service condition.
Claim 13
Independent Claim
151 words
A method in a wireless communication system including dual-mode wireless telephones and a dual-mode communications system, having a first wireless communications system and a digital wireless communications system overlying the first wireless communication system, the method comprising: establishing a first registration, between one of the dual-mode wireless telephones and the digital wireless communications system according to a prescribed digital wireless protocol; detecting a prescribed traffic condition in the digital wireless communications system; transmitting a control command through the digital wireless communications system to the one dual-mode wireless telephone, based on the detected prescribed traffic condition; receiving the control command in the one dual-mode wireless telephone, while the one dual-mode wireless telephone is idle; and in response to receiving the control command while idle, establishing a second registration, between the one dual-mode wireless telephone and the first wireless communications system according to a prescribed wireless protocol, and dropping the first wireless registration.
Claim 14
Independent Claim
151 words
A method in a wireless communication system including dual-mode wireless telephones and a dual-mode communications system, having a first wireless communications system and a digital wireless communications system overlying the first wireless communication system, the method comprising: establishing a first registration, between one of the dual-mode wireless telephones and the digital wireless communications system according to a prescribed digital wireless protocol; detecting a prescribed traffic condition in the digital wireless communications system; transmitting a control command through the digital wireless communications system to the one dual-mode wireless telephone, based on the detected prescribed traffic condition; receiving the control command in the one dual-mode wireless telephone, while the one dual-mode wireless telephone is idle; and in response to receiving the control command while idle, establishing a second registration, between the one dual-mode wireless telephone and the first wireless communications system according to a prescribed wireless protocol, and dropping the first wireless registration.
Claim 15
Dependent Claim
27 words
The method of claim 12 , wherein the step of detecting a prescribed traffic condition comprises detecting the prescribed traffic condition by a mobile telephone switching office.
Claim 16
Dependent Claim
27 words
The method of claim 13 , wherein the step of detecting a prescribed traffic condition further includes detecting a facilities failure within the digital wireless communications system.
Claim 17
Dependent Claim
65 words
The method of claim 13 , wherein the step of detecting a prescribed traffic condition further comprises: detecting base station blockage factors by a base station transceiver of the digital wireless communications system; reporting the base station blockage factors to the mobile telephone switching office; and determining the prescribed traffic condition in the mobile telephone switching office based on the reported base station blockage factors.
Claim 18
Dependent Claim
66 words
The method of claim 12 , further comprising: selecting the one dual-mode wireless telephone, from a plurality of dual-mode wireless telephones in communication with the digital wireless communications system, based on a corresponding prescribed service condition; and generating the control command by including a minimum rescan interval specifying a minimum time interval for registering with the second wireless communications system, based on the prescribed service condition.
Claim 19
Dependent Claim
36 words
The method of claim 16 , further comprising maintaining, by the one dual-mode wireless telephone, the second wireless registration for the minimum time interval before attempting to establish another registration with the digital wireless communications system.
Claim 20
Dependent Claim
115 words
A dual-mode wireless communications system comprising: a first wireless telephone communications system configured for wireless telephone communications in prescribed coverage areas according to a first wireless protocol; and a digital wireless telephone communications system configured for communication with dual mode wireless telephones registered in the prescribed coverage areas according to a digital wireless protocol, the digital wireless telephone communications system including a mobile telephone switching office configured for outputting a rescan instruction to a selected group of registered dual mode wireless telephones, instructing idle ones of the selected group to register with the first wireless telephone communications system, in response to a detection of a prescribed traffic condition in the digital wireless telephone communications system.
Claim 21
Dependent Claim
115 words
A dual-mode wireless communications system comprising: a first wireless telephone communications system configured for wireless telephone communications in prescribed coverage areas according to a first wireless protocol; and a digital wireless telephone communications system configured for communication with dual mode wireless telephones registered in the prescribed coverage areas according to a digital wireless protocol, the digital wireless telephone communications system including a mobile telephone switching office configured for outputting a rescan instruction to a selected group of registered dual mode wireless telephones, instructing idle ones of the selected group to register with the first wireless telephone communications system, in response to a detection of a prescribed traffic condition in the digital wireless telephone communications system.
Claim 22
Dependent Claim
49 words
The system of claim 18 , wherein the mobile telephone switching office includes a subscriber profile register for storing subscriber priority information for each of the dual mode telephones, the mobile telephone switching office determining the selected group based on the subscriber priority information identifying a corresponding priority class.
Claim 23
Dependent Claim
44 words
The system of claim 19 , wherein the mobile telephone switching office specifies in the rescan instruction a minimum time interval before the selected group can establish another wireless link with the digital communications system, based on the priority class for the selected group.
Claim 24
Dependent Claim
27 words
The system of claim 18 , wherein the mobile telephone switching office detects the prescribed traffic condition as a facilities failure within the digital wireless communications system.
Claim 25
Dependent Claim
42 words
The system of claim 21 , wherein the mobile telephone switching office detects the facilities failure as one of a blocking in the mobile telephone switching office and a failure in a trunk line in communication with the mobile telephone switching office.
Claim 26
Dependent Claim
80 words
The system of claim 18 , wherein the digital wireless telephone communications system further includes a base station transceiver for communication with at least a group of the dual-mode wireless telephones on an airlink, the base station transceiver detecting the prescribed traffic condition as one or more detected base station blockage factors, including at least one of an airlink interference overload and an airlink capacity overload, and reporting each detected base station blockage factor to the mobile telephone switching office.
Claim 27
Dependent Claim
104 words
A dual-mode wireless telephone comprising: a digital wireless transceiver configured for detecting a digital communications system and in response registering for digital communication therewith according to a digital wireless protocol; a second wireless transceiver configured for selectively registering for wireless communications with a second communications system according to a second wireless protocol; and a controller configured for controlling the digital wireless transceiver to terminate a registration with the digital communications system and activating the second wireless transceiver to initiate a registration with the wireless communications system in response to reception of a rescan command via the digital communication system during an idle telephone state.
Claim 28
Dependent Claim
104 words
A dual-mode wireless telephone comprising: a digital wireless transceiver configured for detecting a digital communications system and in response registering for digital communication therewith according to a digital wireless protocol; a second wireless transceiver configured for selectively registering for wireless communications with a second communications system according to a second wireless protocol; and a controller configured for controlling the digital wireless transceiver to terminate a registration with the digital communications system and activating the second wireless transceiver to initiate a registration with the wireless communications system in response to reception of a rescan command via the digital communication system during an idle telephone state.
Claim 29
Dependent Claim
46 words
The dual-mode wireless telephone of claim 24 , wherein the controller controls the digital wireless transceiver to establish a new registration with the digital communications system a prescribed time interval after establishment of the wireless communications link in response to the reception of the rescan command.
Claim 30
Dependent Claim
20 words
The dual-mode wireless telephone of claim 25 , wherein the controller obtains the prescribed time interval from the rescan command.
Claim 31
Dependent Claim
88 words
In a dual-mode wireless communications system having a digital first wireless communications system overlying a second wireless communications system, a traffic off-load method comprising: detecting a prescribed traffic condition in the digital first wireless communications system; in response to the detection of the prescribed traffic condition, selecting a dual-mode wireless telephone that has registered with the digital first wireless communications system; and transmitting a control command from the digital wireless communications system instructing the selected dual-mode wireless telephone to register with the second wireless communications system when idle.
Claim 32
Dependent Claim
88 words
In a dual-mode wireless communications system having a digital first wireless communications system overlying a second wireless communications system, a traffic off-load method comprising: detecting a prescribed traffic condition in the digital first wireless communications system; in response to the detection of the prescribed traffic condition, selecting a dual-mode wireless telephone that has registered with the digital first wireless communications system; and transmitting a control command from the digital wireless communications system instructing the selected dual-mode wireless telephone to register with the second wireless communications system when idle.
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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) | 2005-09-23 | 2006-03-25 | 2006-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-23 | 2010-03-25 | 2010-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-23 | 2014-03-25 | 2014-09-24 | $7700.00 | Window Closed / Lapsed |