WO2001084864A1 - Non registration of wireless radios - Google Patents

Non registration of wireless radios Download PDF

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Publication number
WO2001084864A1
WO2001084864A1 PCT/US2001/014273 US0114273W WO0184864A1 WO 2001084864 A1 WO2001084864 A1 WO 2001084864A1 US 0114273 W US0114273 W US 0114273W WO 0184864 A1 WO0184864 A1 WO 0184864A1
Authority
WO
WIPO (PCT)
Prior art keywords
telemetry device
service area
cellular service
telemetry
system identification
Prior art date
Application number
PCT/US2001/014273
Other languages
French (fr)
Inventor
Jim Sotelo
Bob Fultz
Syed Zaeem Hosain
Original Assignee
Aeris Communications, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aeris Communications, Inc. filed Critical Aeris Communications, Inc.
Priority to AU2001259416A priority Critical patent/AU2001259416A1/en
Publication of WO2001084864A1 publication Critical patent/WO2001084864A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/002—Telephonic communication systems specially adapted for combination with other electrical systems with telemetering systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to wireless networks.
  • the present invention relates to a method and apparatus for reducing overhead in a cellular network by reducing autonomous registrations of wireless radios.
  • a Mobile Switching Center (MSC) 130 provides an interface for traffic between a cellular network and other networks such as the public switched telephone network (PSTN) 133 reachable via link 170, or other MSCs in the same or other cellular networks.
  • PSTN public switched telephone network
  • Base station (BS) 125 comprises radio equipment located in a cell of a cellular radio system to provide for communication between the MSC and the mobile stations via air interface 150 and interface 155.
  • Nisitor Location Register (NLR) 135 is coupled to MSC 130 via interface 160. This register is used by MSC 130 to store and retrieve information relating to call set up and management for visiting mobile stations, also known as visiting subscribers.
  • the NLR and its functionality may be integrated with or separate from the MSC, and may serve multiple MSCs.
  • Home Location Register (HLR) 140 which serves, for example, any one of mobile stations 120-124, is coupled in communication with NLR 135 via link 165. The communication between NLR and HLR over link 165 may be maintained by way of the well known Signaling System 7 (SS7) out-of-band network commonly utilized in today's telephone networks.
  • HLR 140 is a location register that provides information about a mobile station, or subscriber, in the cellular system. Just as with the NLR, the HLR may be integrated with or separate from a switch, and may serve more than one switch. Additionally, the HLR may be distributed over multiple physical locations.
  • a mobile station can move to different locations in the cellular network, from one cellular service area to another cellular service area.
  • the MS may initially be served by a home MSC and associated HLR, then move (roam) so that it is in a different cellular service area and served by a new MSC arid associated NLR.
  • the protocols set forth in EIA/TIA-41-D are invoked to update the MSCs, the HLR and the NLR as to the location and other details regarding the MS.
  • the MS may notify the serving MSC that it is roaming in the service area covered by the MSC by broadcasting an autonomous registration.
  • the MSC thereby detects the MS is roaming in its cellular service area and issues a Registration ⁇ otification invoke (REG ⁇ OT) to its associated NLR to, among other things, report the new location of the MS and validate the MS. If the NLR recognizes the MS as having previously registered with a MSC within its domain and the information regarding the MS is correct, no further action is taken.
  • REG ⁇ OT Registration ⁇ otification invoke
  • the NLR sends a REG ⁇ OT to the HLR associated with the home MSC for the MS.
  • the appropriate HLR is determined by the mobile identification number (MUST) assigned to the MS (and communicated to the MSC/NLR, for example, by way of the autonomous registration).
  • MUST mobile identification number assigned to the MS (and communicated to the MSC/NLR, for example, by way of the autonomous registration).
  • the NLR receives and forwards the Registration ⁇ otification response (regnot), the response validating the MS, from the HLR to the new serving MSC.
  • the HLR sends a registration cancellation (REGCA ⁇ C) to the old serving MSC. In this way, the locations of subscribers is maintained so that the subscriber can send and receive calls regardless of the location of the subscriber in the cellular system.
  • REGCA ⁇ C registration cancellation
  • an MS may interface with a remote device.
  • application specific device 105 is coupled in communication with MSI 120, while application specific device 110 is in communication with MS5 124.
  • the application specific devices may communicate with an application specific server resident on a hub or switch associated with the HLR for the MS.
  • multiple application specific devices may communicate with the application specific server via a single MS, rather than one application specific device per MS, as illustrated in Fig. 1.
  • vending machines, alarm systems, or utility meters incorporating or communicating with a mobile station in a cellular system, may exchange application specific information with an appropriate control or management device coupled to or acting as an HLR on the out-of-band network.
  • the applications for telemetry services such as described above are numerous.
  • the processing overhead and data storage requirements of the MSCs and NLR in the domain in which the MSs are located likewise increases. For example, every time a MS associated with a telemetric device initiates an autonomous registration, the NLR must verify, and update if necessary, its records for the MS, or add a record if none exists in the NLR and issue a REG ⁇ OT to the HLR for the MS/telemetry device, and receive a regnot from the HLR.
  • Described is a method for reducing the number of autonomous registrations issued by a mobile station (MS or subscriber) associated with a telemetry device, to reduce the processing overhead and storage requirements for the NLR in the domain in which the MS is located.
  • a stationary telemetry device and associated cellular transceiver providing cellular mobile radio communication functionality need not repeatedly issue autonomous registrations to notify the HLR associated with the telemetry device of its location.
  • the MSC/NLR for the domain in which the device is located issues a REG ⁇ OT to the telemetry server/HLR, and the HLR responds with a regnot validating the device to the MSC/NLR, there is no need for the telemetry device to repeatedly issue the autonomous registration - the telemetry server/HLR is aware of the location of the telemetry device and can issue a command to it at any time using the identity and location information it maintains for the telemetry device.
  • a mobile telemetry device to a limited extent. For example, unless the mobile telemetry device moves (roams) to a new cellular service area, as defined by the telemetry device and associated mobile station detecting a new cellular system identification (SID), or a paging zone with the same SID, the telemetry device need not repeatedly issue autonomous registrations that unnecessarily burden the VLR. In either the case of a stationary or mobile telemetry device, once the record in the VLR for the telerhetry device times out, is removed by the NLR or is otherwise no longer maintained, the storage space and processing capability of the VLR is made available to other devices in the domain of the VLR. In this manner, the VLR is not overwhelmed by the presence of large numbers of telemetry devices in its domain. Another advantage is reduced SS7 traffic and the associated cost.
  • a "registration switch” is provided, that is, a soft switch that enables and disables autonomous registration for the telemetry device.
  • a register now command is provided to cause the telemetry device and associated cellular mobile radio transceiver to issue an autonomous registration. In one embodiment, these commands are serial port commands.
  • the intent of the registration switch, and register now command is to turn the management of autonomous registrations over to the telemetry application whenever the registration switch has autonomous registrations disabled. This functionality can be provided entirely by the radio device.
  • the telemetry application causes autonomous registration 230 at power on 210 if, and only if, the SID broadcast by the base station for the serving MSC is different or has changed from the SID recognized by the telemetry device when it was powered off.
  • the SID is programmed into, or stored in, for example, nonvolatile memory in the telemetry device so that when the telemetry device is initially configured based on its home cellular service area, or, is powered down, the SID is maintained upon power up).
  • the telemetry application causes an autonomous registration if, and only if, the broadcast SID changes 230, as when the telemetry device moves (roams) to a new cellular service area.
  • the telemetry device Since the telemetry devices do not periodically issue autonomous registrations thereafter, the entry in the appropriate table in the VLR for the telemetry device may no longer be present when the telemetry device transmits information the telemetry server. Thus, the telemetry device optionally issues an autonomous registration 250 before each application specific data transmission 260, excluding retries if the transmission attempt failed. (It should be noted that the VLR associated with the serving MSC generally issues a REGNOT to the HLR if a transmission is attempted by a non registered MS in the VLR's domain. Having the device send a registration before transmission is a therefore a precaution.)
  • autonomous registration includes when power is on, and the broadcast REGID has an instantaneous jump, either plus or minus, greater than the broadcast REGLNfC. ,Note that if power is cycled on and off, a jump between the REGID at power off to REGID at power on that is greater than REGINC shall not be considered instantaneous for this purpose. Additionally, if power is supplied to the telemetry device, whenever the telemetry application requests registration over a serial port of the device, autonomous registration is proper.

Abstract

A telemetry application causes autonomous registration by a cellular transceiver coupled to a telemetry device (210) at power on if the SID broadcast by the base station for the serving MSC is different or has changed from the SID recognized by the telemetry device when it was powered off. While power is on, the telemetry application causes an autonomous registration if the broadcast SID changes (220), as when the telemetry device moves (roams) to a new cellular service area. The telemetry device optionally issues an autonomous registration (230) before telemetry data transmission.

Description

NON REGISTRATION OF WIRELESS RADIOS
BACKGROUND OF THE INVENTION This application claims the benefit of provisional patent application number 60/179,509, filed February 1, 2000. Field of the Invention
The present invention relates to wireless networks. In particular, the present invention relates to a method and apparatus for reducing overhead in a cellular network by reducing autonomous registrations of wireless radios. Description of the Related Art
ANSI/TLAJEIA-41-D, Approved November 13, 1997, published December, 1997, sets forth a standard for intersystem operation in cellular radiotelecommunications, that is, for operation on the network side of the Mobile Switching Center (MSC). With reference to Fig. 1, the cellular system 100 described therein is illustrated. A Mobile Switching Center (MSC) 130 provides an interface for traffic between a cellular network and other networks such as the public switched telephone network (PSTN) 133 reachable via link 170, or other MSCs in the same or other cellular networks. Any number of mobile stations (MSs), e.g., MSs 120-124, may communicate with other MSs or other devices in the same or other cellular networks, or in the PSTN, via MSC 130. Base station (BS) 125 comprises radio equipment located in a cell of a cellular radio system to provide for communication between the MSC and the mobile stations via air interface 150 and interface 155.
Nisitor Location Register (NLR) 135 is coupled to MSC 130 via interface 160. This register is used by MSC 130 to store and retrieve information relating to call set up and management for visiting mobile stations, also known as visiting subscribers. The NLR and its functionality may be integrated with or separate from the MSC, and may serve multiple MSCs. Home Location Register (HLR) 140, which serves, for example, any one of mobile stations 120-124, is coupled in communication with NLR 135 via link 165. The communication between NLR and HLR over link 165 may be maintained by way of the well known Signaling System 7 (SS7) out-of-band network commonly utilized in today's telephone networks. HLR 140 is a location register that provides information about a mobile station, or subscriber, in the cellular system. Just as with the NLR, the HLR may be integrated with or separate from a switch, and may serve more than one switch. Additionally, the HLR may be distributed over multiple physical locations.
As is well known in cellular system operation, a mobile station (MS) can move to different locations in the cellular network, from one cellular service area to another cellular service area. Thus, the MS may initially be served by a home MSC and associated HLR, then move (roam) so that it is in a different cellular service area and served by a new MSC arid associated NLR. When a MS moves from an old serving MSC to a new serving MSC, the protocols set forth in EIA/TIA-41-D are invoked to update the MSCs, the HLR and the NLR as to the location and other details regarding the MS.
When a mobile station (MS) moves to a new area served by a new MSC, the MS may notify the serving MSC that it is roaming in the service area covered by the MSC by broadcasting an autonomous registration. The MSC thereby detects the MS is roaming in its cellular service area and issues a RegistrationΝotification invoke (REGΝOT) to its associated NLR to, among other things, report the new location of the MS and validate the MS. If the NLR recognizes the MS as having previously registered with a MSC within its domain and the information regarding the MS is correct, no further action is taken. If information regarding the MS needs to be updated, for example, if the identity of the MSC (MSCID) now serving the MS has changed, the NLR sends a REGΝOT to the HLR associated with the home MSC for the MS. The appropriate HLR is determined by the mobile identification number (MUST) assigned to the MS (and communicated to the MSC/NLR, for example, by way of the autonomous registration). The NLR receives and forwards the RegistrationΝotification response (regnot), the response validating the MS, from the HLR to the new serving MSC. If the MS is being served by a new MSC, the HLR sends a registration cancellation (REGCAΝC) to the old serving MSC. In this way, the locations of subscribers is maintained so that the subscriber can send and receive calls regardless of the location of the subscriber in the cellular system.
In telemetry applications, an MS may interface with a remote device. For example, application specific device 105 is coupled in communication with MSI 120, while application specific device 110 is in communication with MS5 124. The application specific devices may communicate with an application specific server resident on a hub or switch associated with the HLR for the MS. Alternatively, multiple application specific devices may communicate with the application specific server via a single MS, rather than one application specific device per MS, as illustrated in Fig. 1. Thus, for example, vending machines, alarm systems, or utility meters, incorporating or communicating with a mobile station in a cellular system, may exchange application specific information with an appropriate control or management device coupled to or acting as an HLR on the out-of-band network. The applications for telemetry services such as described above are numerous. As the number of MSs installed in a cellular service area increase, whether in support of the applications or not, the processing overhead and data storage requirements of the MSCs and NLR in the domain in which the MSs are located likewise increases. For example, every time a MS associated with a telemetric device initiates an autonomous registration, the NLR must verify, and update if necessary, its records for the MS, or add a record if none exists in the NLR and issue a REGΝOT to the HLR for the MS/telemetry device, and receive a regnot from the HLR.
DETAILED DESCRIPTION OF THE INVENTION
Described is a method for reducing the number of autonomous registrations issued by a mobile station (MS or subscriber) associated with a telemetry device, to reduce the processing overhead and storage requirements for the NLR in the domain in which the MS is located.
A stationary telemetry device and associated cellular transceiver providing cellular mobile radio communication functionality need not repeatedly issue autonomous registrations to notify the HLR associated with the telemetry device of its location. Once the telemetry device issues an autonomous registration, the MSC/NLR for the domain in which the device is located issues a REGΝOT to the telemetry server/HLR, and the HLR responds with a regnot validating the device to the MSC/NLR, there is no need for the telemetry device to repeatedly issue the autonomous registration - the telemetry server/HLR is aware of the location of the telemetry device and can issue a command to it at any time using the identity and location information it maintains for the telemetry device. The same is true for a mobile telemetry device, to a limited extent. For example, unless the mobile telemetry device moves (roams) to a new cellular service area, as defined by the telemetry device and associated mobile station detecting a new cellular system identification (SID), or a paging zone with the same SID, the telemetry device need not repeatedly issue autonomous registrations that unnecessarily burden the VLR. In either the case of a stationary or mobile telemetry device, once the record in the VLR for the telerhetry device times out, is removed by the NLR or is otherwise no longer maintained, the storage space and processing capability of the VLR is made available to other devices in the domain of the VLR. In this manner, the VLR is not overwhelmed by the presence of large numbers of telemetry devices in its domain. Another advantage is reduced SS7 traffic and the associated cost.
With reference to Fig. 2, an embodiment 200 of the present invention is illustrated. A "registration switch" is provided, that is, a soft switch that enables and disables autonomous registration for the telemetry device. A register now command is provided to cause the telemetry device and associated cellular mobile radio transceiver to issue an autonomous registration. In one embodiment, these commands are serial port commands. The intent of the registration switch, and register now command is to turn the management of autonomous registrations over to the telemetry application whenever the registration switch has autonomous registrations disabled. This functionality can be provided entirely by the radio device. Under these conditions, the telemetry application causes autonomous registration 230 at power on 210 if, and only if, the SID broadcast by the base station for the serving MSC is different or has changed from the SID recognized by the telemetry device when it was powered off. (The SID is programmed into, or stored in, for example, nonvolatile memory in the telemetry device so that when the telemetry device is initially configured based on its home cellular service area, or, is powered down, the SID is maintained upon power up). While power is on, the telemetry application causes an autonomous registration if, and only if, the broadcast SID changes 230, as when the telemetry device moves (roams) to a new cellular service area. Since the telemetry devices do not periodically issue autonomous registrations thereafter, the entry in the appropriate table in the VLR for the telemetry device may no longer be present when the telemetry device transmits information the telemetry server. Thus, the telemetry device optionally issues an autonomous registration 250 before each application specific data transmission 260, excluding retries if the transmission attempt failed. (It should be noted that the VLR associated with the serving MSC generally issues a REGNOT to the HLR if a transmission is attempted by a non registered MS in the VLR's domain. Having the device send a registration before transmission is a therefore a precaution.)
Additional scenarios in which autonomous registration is provided includes when power is on, and the broadcast REGID has an instantaneous jump, either plus or minus, greater than the broadcast REGLNfC. ,Note that if power is cycled on and off, a jump between the REGID at power off to REGID at power on that is greater than REGINC shall not be considered instantaneous for this purpose. Additionally, if power is supplied to the telemetry device, whenever the telemetry application requests registration over a serial port of the device, autonomous registration is proper.

Claims

CLAIMS What is claimed is:
1. A method, comprising: a. powering up a telemetry device in a cellular service area, the telemetry device comprising a cellular transceiver; b. detecting whether the cellular service area in which the telemetry device powered up is a new cellular service area; c. transmitting an autonomous registration from the telemetry device if the telemetry device is in the new cellular service area; and d. otherwise transmitting an autonomous registration from the telemetry device only when the telemetry device is ready to transmit telemetric information.
2. The method of claim 1, wherein the telemetry device is a stationary telemetry device.
3. The method of claim 1, wherein detecting whether the cellular service area in which the telemetry device powered up is a new cellular service area comprises: a. comparing a system identification being broadcast in the cellular service area in which the telemetry device powered up with a system identification maintained in the telemetry device at power up; b. detecting the telemetry device is in the new cellular service area if the system identification being broadcast is different from the system identification maintained in the telemetry device at power up; and c. updating the system identification maintained in the telemetry device to be the system identification of the new cellular service area.
4. The method of claim 1, wherein detecting whether the cellular service area in which the telemetry device powered up is a new cellular service area comprises: a. comparing a system identification being broadcast in the cellular service area in which the telemetry device powered up with a system identification maintained in the telemetry device at power up; b. comparing a paging zone of the cellular service area being broadcast in the cellular service area in which the telemetry device powered up with a paging zone maintained in the telemetry device at power up; c. detecting the telemetry device is in the new cellular service area if the system identification being broadcast is different from the system identification maintained in the telemetry device at power up; d. detecting the telemetry device is in the new cellular service area if the system identification being broadcast is identical to the system identification maintained in the telemetry device at power up and the paging zone of the cellular service area being broadcast is different from the paging zone maintained in the telemetry device at power up; e. updating the system identification maintained by the telemetry device to be the system identification of the new cellular service area if the system identification maintained by the telemetry device is different from the system identification being broadcast in the new cellular service area; and f. updating the paging zone maintained by the telemetry device to be the paging zone of the cellular service area in which the telemetry device powered up if the paging zone maintained by the telemetry device is different from the paging zone being broadcast in the cellular service area.
5. The method of claim 1, wherein the telemetry device is a mobile telemetry device.
6. A method, comprising: a. disabling autonomous registration for a cellular transceiver coupled to a telemetry device; and b. commanding, via a telemetry application executed by the telemetry device, the cellular transceiver to transmit an autonomous registration when the telemetry device and cellular transceiver are powered up, or are powered on and move to a new cellular service area.
7. The method of claim 6, further comprising commanding, via the telemetry application executed by the telemetry device, the cellular transceiver to transmit an autonomous registration when the telemetry device is to transmit telemetry data.
8. The method of claim 6, wherein the telemetry device is a stationary telemetry device.
9. The method of claim 6, wherein the telemetry device is a mobile stationary device.
10. The method of claim 6, wherein commanding, via a telemetry application executed by the telemetry device, the cellular transceiver to transmit an autonomous registration when the telemetry device and cellular transceiver are powered on or move to a new cellular service area, further comprises the telemetry application submitting a request to transmit an autonomous registration to the serial port of the cellular transceiver.
11. An article of manufacture comprising: a computer usable medium having computer readable program code means embodied therein for controlling transmissions of autonomous registrations from a cellular transceiver coupled to a telemetry device, the computer readable program code means in the article of manufacture comprising: computer readable program code means for disabling autonomous registration for a cellular transceiver coupled to a telemetry device; and computer readable program code means for commanding the cellular transceiver to transmit an autonomous registration when the telemetry device and cellular transceiver are powered up, or are powered on and move to a new cellular service area
12. An article of manufacture comprising: a computer usable medium having computer readable program code means embodied therein for controlling transmissions of autonomous registrations from a cellular transceiver coupled to a telemetry device, the computer readable program code means in the article of manufacture comprising: computer program code means for powering up a telemetry device in a cellular service area, the telemetry device comprising a cellular transceiver; computer program code means detecting whether the cellular service area in which the telemetry device powered up is a new cellular service area; computer program code means for transmittin an autonomous registration from the telemetry device if the telemetry device is in the new cellular service area; and computer program code means for otherwise transmitting an autonomous registration from the telemetry device only when the telemetry device is ready to transmit telemetric information.
13. The article of manufacture of claim 12, wherein the computer readable program code means for detecting whether the cellular service area in which the telemetry device powered up is a new cellular service area, comprises: computer readable program code means for comparing a system identification being broadcast in the cellular service area in which the telemetry device powered up with a system identification maintained in the telemetry device at power up; computer readable program code means for detecting the telemetry device is in the new cellular service area if the system identification being broadcast is different from the system identification maintained in the telemetry device at power up; and computer readable program code means for updating the system identification maintained in the telemetry device to be the system identification of the new cellular service area.
II
PCT/US2001/014273 2000-05-03 2001-05-03 Non registration of wireless radios WO2001084864A1 (en)

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Cited By (1)

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WO2007069974A2 (en) * 2005-12-16 2007-06-21 Teliasonera Ab Telematics system using adapted subscription

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US5289527A (en) * 1991-09-20 1994-02-22 Qualcomm Incorporated Mobile communications device registration method
US5822694A (en) * 1995-06-30 1998-10-13 Motorala, Inc. Method and apparatus for providing communication services to a communication unit based on registration type
US5898923A (en) * 1993-09-23 1999-04-27 Telefonaktiebolaget Lm Ericsson Registration method in a cellular mobile radio system

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US5289527A (en) * 1991-09-20 1994-02-22 Qualcomm Incorporated Mobile communications device registration method
US5898923A (en) * 1993-09-23 1999-04-27 Telefonaktiebolaget Lm Ericsson Registration method in a cellular mobile radio system
US5822694A (en) * 1995-06-30 1998-10-13 Motorala, Inc. Method and apparatus for providing communication services to a communication unit based on registration type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007069974A2 (en) * 2005-12-16 2007-06-21 Teliasonera Ab Telematics system using adapted subscription
WO2007069974A3 (en) * 2005-12-16 2007-08-09 Teliasonera Ab Telematics system using adapted subscription

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