GB2244409A - Mobile radio communication system - Google Patents

Mobile radio communication system Download PDF

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Publication number
GB2244409A
GB2244409A GB8924354A GB8924354A GB2244409A GB 2244409 A GB2244409 A GB 2244409A GB 8924354 A GB8924354 A GB 8924354A GB 8924354 A GB8924354 A GB 8924354A GB 2244409 A GB2244409 A GB 2244409A
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United Kingdom
Prior art keywords
mobile station
cellular radio
base station
radio system
mobile
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB8924354A
Other versions
GB2244409B (en
GB8924354D0 (en
Inventor
Jonathon Elder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonica UK Ltd
Original Assignee
Telefonica UK Ltd
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 Telefonica UK Ltd filed Critical Telefonica UK Ltd
Priority to GB8924354A priority Critical patent/GB2244409B/en
Publication of GB8924354D0 publication Critical patent/GB8924354D0/en
Publication of GB2244409A publication Critical patent/GB2244409A/en
Application granted granted Critical
Publication of GB2244409B publication Critical patent/GB2244409B/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12Messaging; Mailboxes; Announcements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0251Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0258Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0261Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • H04W52/0283Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices
    • H04W88/184Messaging devices, e.g. message centre
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]
    • Y02D70/12Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks
    • Y02D70/122Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks in 2nd generation [2G] networks
    • Y02D70/1222Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks in 2nd generation [2G] networks in Global System for Mobile Communications [GSM] networks

Abstract

A radio communications system, particularly a cellular system, has base stations BS for providing a bi-directional radio communication link with a mobile station MS. A messaging centre SCM is connected to the base stations for storing an incoming message for forwarding to a mobile station using the system. Each mobile station MS has a timer, and during a low power consumption "off" state of the mobile, the timer periodically switches the mobile to an on state to effect a location registration update communication procedure with the base station network. In response to this communication, the messaging centre SCM is caused to send any stored messages to the mobile via the base station network. <IMAGE>

Description

RADIO CCMMUNICATION SYSTEN The present invention relates to a radio communications system, and in particular, though not exclusively, to a cellular radio system.

One of the irajor advantages of cellular radio system is that mobile stations, which may be hand portable units, c3n be contacted at any time. At any time that is provided the mobile station is switched on and has registered with the cellular network. In existing cellular systems, for example UKs TAOS system, the cellular system has primarily been able to deliver only calls to mobile, and not data or text messages. In the proposed GSM, Pan-European digital cellular radio system, in addition to connecting calls to a mobile station, provision can be made for sending data and text messages the short ressage services (SMS).A user will be able, for example, to receive an SMS message during a meeting rather than receiving a cail or leaving the handset off to avoid such disturbance. The switching off of mobile stations, and in particular hand portables, to extend batter life or for prvaoy, is a significant problem.

Many calls under the existing TACTS system fail for this reason, and it must be envisaged that calls and SMS messaging under GSM must also be highly likely to fail for the same reason.

The present invention is concerned with promoting the deluvery of messages, as distinct from calls to mobile its in a cellular radio system.

According to a first aspect the invention provides a radio communications system comprising: a base station for providing a bi-directional radio communication link with a mobile station; a messaging centre, connected to te base station, for storing an incoming message for forwarding to a mobile station using the system; a mobile station having timer means for periodically initiating communication with the base station, so tat an incoming stored message can be forwarded via the base station network to the mobile station.

According to te invention a cellular radio system is provided comprising a network of base stations for providing a bi-directional radio communications link with a mobile station; a messaging centre connected to the b-se station network for storing an incoming message for forwarding to a mobile station using the state; a mobile station having tier means for parlodcally swItching the mobile station from a lower power consumption, "off" state to a higher power consumption, "on" state for a predetermined period, and means for initiating signalling with the base station network during the predetermined period, so that an incoming stored message can be forwarded via the base station network to the mobile station.

The messaging may be @@ice messaging e.g. a recorded announcement of a digital stored voice message, but is preferable text messaging of the GSM S@S-type. The predetermined period for which the mobile is on may be set to be sufficient to receive one or more messages, but preferably te period is exte@dable upon receipt by the mobile station of a command signal from the base station network. The predetermined period may be set to be sufficient just to receive such a corrana signal, th@s minimising the "on" time of the mobile station.The period cf the tier i.e. the period during which the mobile station is "off", may be adjustable, either by a user at the mobile station or by a command signal from the network The mobile station tray be swltchable between two (or more) modes with differing time periods, for example a night mode and a day mode with the timer (off) period being,greater in the night mode than in the day mode. Again the switching between modes may be done by a user at the mobile station or under command from the network. The mobile station may have an alarm which can be activated when a message is received.

3y provision of a low power mode the battery life of the mobile station is extended while still maintaining a periodic link with the network, which can be sufficient for sore user requirements. The sender of a message or a caller using a voice messaging service, kncws that provided that the mobile station is at least in the lower power state, the mobile station, and hence the user, will receive the iressace within a period of time.

In further enhancements, the system could store details of the latest registration of a mobile, including the tie of te latest registrations and period between registrations. The system, on receipt of an incomIng @essage for a mobile, could check to see the stored details from the latest registration and make a decision on the delivery of the message. Delivery could be attempted immediately, deferred until the next expected registration, or could be abandoned. A suitable message could he returned to the sender of the message, indicatIng for example, that delivery would be attempted at the next expected registration which would be at such-and-such a time. Messaçes indicating other circumstances could likewise be sent to the sender of a message. Similarly, when a message is delivered to a mobile user, details of the original tie of receipt could be included and also an indication of any acknowledgement provided to the sender by the system.

It is possible to envisage that the for; of the delivery attempt procedure could be adapted to the circumstances for a particular delIvery attempt. For example, if it was believed a mobile was switched off, a limited delivery attempt could be made - just in case the mobile was switched on - whereas if the mobile was expected to be on, a fuller delivery attempt could be made. Periodically repeated delivery attempts can also be envisaged.

A preferred embodiment of the invention will now be described by way of example, and with reference to the accompanying drawings, wherever: Figure 1 is a general schematic diagram of a cellular radio system according to a preferred embodiment Gf the Invention; Figure 2 is a schematic diagram of a mobile station of a preferred embodiment of the Invention; and Figure 3 is a chart showing signal and message transfer In a preferred embodiment of the Invention.

In a preferred embodiment a cellular redio system for serving one or more mobile stations has a bsse station network with a number of Base stations (BS) linked in groups to mobile switching centres (MSCs) which centres are linked to a central control and switching centre (CCSC) which may also be à mobile switching centre. A service centre for messaging (SCM) is connected on the one hand to a network, e.g. a PSTN, for receiving incoming messages and on the other hand to the central control and switching centre (CCSC).Each mobile switching centre (MSC) has a home location register (HLR) which stcres the current location of each mobile station associated with that mobile switching centre; i.e. details of the current mobile switching centre with which the mobile has registered; and a visited location register (VLR) which stores the details of mobile stations associated with other mobile switching centres, but currently registered with that mobile swItchIng centre. The cellular radio system as illustrated is in general conformance with the GSM, Pan-European Cellular Radio standard. Such a cellular radio system can handle the short messaging service identified In the GSM standard.

in the GSM - SMS service, as shown in Figure 3A, a short message is deposited in the service centre (SC5M) and delivery of te message is attempted. This attempt involves the central control and switching centre (CCSC) checking with the home location register of the mobile station to which the message is addressed, to establish the current location of the addressed mobile station.

The central control and switching centre (cosy) then delivers the short message to the mobile switching centre (MSC) through which the bile station (KS) should be contactable. The mobile switching centre (MSC) pages the mobile station (MS).If the mobile station (MS) receives the paging signal, a communications link can be established and the short message delivered to the mobile station. The message nay not be delivered however because, for example, the mobile station may be switched off and unable to receive and respond to the paging sins, anc ry indeed have passed Into part of the network oversee by another mobile switching centre.

in the preferred embodiment of the invention, a mobile station portable handset has, in addition to radio communications circuitry (RCC) and a power supply (Ps), tier circuitry (TC) powered either from power supply (PS), as illustrated, or from an independent power supply. The tier circuit (TC) is connected to switching circuit (SC) for connecting/disconnecting the power supply (PS) to/from the radio communications circuitry (RCC).

The radio communications circuitry (RCC) has a connection to the timer circuitry (TC), so that timer circuitry (TC) can be cver-ridden. The mobile station has an ON/OFF switch for normal usage.

It is intended that a user can switch the handset "ON" and operate the handset in the usual way. The operation of tier circuitry which will be described below, is over-ridden while the handset is "ON". wHEN the handset is switched "ON" an automatic registration procedure is attempted, which if successful will result in the 'home' mobile switching centre (M.SC) storing in its home location register (HbR) the current location of the handset (MS).

While the handset ramains "ON", short messages ca@ be delivered in the way previously described.

When a user switches "OFF" the hanset of the preferred embodiment, the overriding of the operation of the timer circuitry (TC) ceases. The timer circuitry then periodically e.g. every half hour, connects the power supply (PS) to the radio communications s circuitry (RCC) by means of the switching circuitry (SC). The radio communications circuitry (RCC) initiates a registration procedure which tifies the base station network, if, of course, the handset is communications range, of the presence of the handset (MS) and the Home location register of the handset is updated. This procedure is shown in Figure 3B. The mobile switching centre (Mso) alerts the service centre to the temporary availability cf the handset (Ms). The service centre stores any previously unsuccessfully delivered short messages and on receipt of the handset availability signal, sends any stored mess@ges to the mobile switching centre. If a short message is sent to the mobile switching centre, the mobile switching makes a paging attampt to the handset (S). t the handset (MS), timer circuitry (TC) maintains the radio communications circuitry (RCC)"ON" for sufficient time to receive any paging attept. When a paging signal is received by the handset (NS), the radio communications circuitry (RCC) disables the timer circuitry (TC) and responds to the paging attempt.The mobile switching centre (MSC) delivers the short message to the handset (MS). The handset (MS) detaches itself once the short message(s) have been delivered and the radio communications circuitry (RCC) then enables the timer circuitry (TC). The timer circuitry (TC) then operates the switching circuitry (SC) to disconnect the power supply (PS) from the radio communications circuitry (ROC). The timer circuitry (TC) then operates as described above to reconnect the power supply (Ps) to the radio communication s circuitry and thereby initiate a registration attempt after the predetermined period, e.g.

half an hour.

It will be appreciated that the timer circuitry (TC) has two cyclic predetermined periods of operation, one is an "OFF" period, i.e. when the radio communications circuitry (ROC) is not powered, and the other is an "ON" period when conversely the radio communications circuitry (RCC) is powered. The timer circuitry (TC) can be disabled during the "ON" period by the radio communications circuitry (ROC) to allow for reception Or one or more short messages and when enabled after reception of such messages, the timer circuitry resumes and completes the "" period.

VarIous modifications to the preferred errtodlrent can be envisaged within the scope of the invention including, for example, the provision in the handset (NS) of a common ON/OFF switch for the radio communications circuitry and the timer circuitry so that while one is "N" the other is "OFF". Also, for example, completion of receipt of a short message by the handset may cause a reset of the timer circuitry (TC) so that an "OFF" period imme@iately commences, rather than continuation and completion of the "ON" period.

Claims (14)

1. A radio communications system comprising: a base station for providing a bi-directional radio communication link with a mobile station; a messaging centre, connected to the base station, for storing an incoming message for forwarding to a mobile station using the system; a mobile station having timer means for periodically initiating communication with the base station, so that an incomlng stored message can be forwarded via the base station network to the mobile station.
2. A cellular radio system comprising: a network of base stations for providing a bi-directional radio communication link with a mobile station; a messaging centre, connected to the base station, for storing an incoming message for forwarding to a mobile station using the system; a mobile station having timer means for periodically switching the mobile station from a lower power consumption, "off" state to a higher power consumption, "on" state for a predetermined period, and means for initiating signaling with the base station network during the predetermined period, so that an incoming stored message can be forwarded via the base station network to the mobile station.
3. A cellular radio system as described in claim 2 wherein the base station network has means for transmitting a signal, for maintaining the mobile station in the "ON" state beyond the predetermined period, to alAcw for delivery of the message, and the mobile station has means for responding to the message.
4. A cellular radio system as described in claIm 1 or 2 or 3 wherein the messaging is text messaging.
5. A cellular radio system as described in claim 1 or 2 or 3 wherein the message is voice messaging.
6. A cellular radio system as clained in any preceding claim wherein the period of the tier means is adjustable.
7. A cellular radio system as claimed in claim 6 wherein the period of the timer means can be set by a command signal from the base station network.
8. A cellular radio system as claImed in any preceeding clalm, wherein the mobile has means for switching between to or more modes, with differing tier periods.
9. A cellular radio system as claimed in claim 8 wherein the mobile station has means for switching between bodes under a command signal from the base station network.
10. A cellular radio system as claimed in any preceding claim where In the mobile station has ajarm @eans activatable upon recelpt of a message.
11. A mobile station for a cellular radio system, as claimed in any preceding claim.
12. A messaging centre for a cellular radio system as claimed in any precedIng claim.
13. A base station network for a cellular radio system, as claimed In any preceding claim.
14. A cellular radio system substantially as herein described, and with reference to the accorpanying drawings.
GB8924354A 1989-10-30 1989-10-30 Radio communication system Expired - Lifetime GB2244409B (en)

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Application Number Priority Date Filing Date Title
GB8924354A GB2244409B (en) 1989-10-30 1989-10-30 Radio communication system

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Application Number Priority Date Filing Date Title
GB8924354A GB2244409B (en) 1989-10-30 1989-10-30 Radio communication system

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GB8924354D0 GB8924354D0 (en) 1989-12-20
GB2244409A true GB2244409A (en) 1991-11-27
GB2244409B GB2244409B (en) 1994-08-17

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Cited By (27)

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Publication number Priority date Publication date Assignee Title
WO1994005124A1 (en) * 1992-08-11 1994-03-03 Nokia Telecommunications Oy Short message processing in a mobile exchange
WO1994010810A1 (en) * 1992-10-27 1994-05-11 Telefonaktiebolaget Lm Ericsson A method and a system for activity supervision in a mobile telephone network
WO1994016532A1 (en) * 1993-01-15 1994-07-21 Nokia Telecommunications Oy A method for starting a short message transmission in a mobile telephone network
EP0631452A1 (en) * 1993-06-23 1994-12-28 Compagnie Financiere Pour Le Radiotelephone, ( Cofira) S.A. Messaging centre management method for cellular radio messaging
WO1995029568A1 (en) * 1994-04-20 1995-11-02 Ericsson Inc. Method and apparatus for extending battery life in a digital cellular communications system
WO1995031076A2 (en) * 1994-05-04 1995-11-16 Nokia Telecommunications Oy Call forwarding method and arrangement for a mobile terminating call
WO1996010895A1 (en) * 1994-09-30 1996-04-11 Qualcomm Incorporated Method and apparatus for providing broadcast messages in a communications network
WO1996028945A1 (en) * 1995-03-10 1996-09-19 Telefonaktiebolaget Lm Ericsson (Publ) A method of providing service information to subscribers in a cellular telecommunications network
WO1996038010A1 (en) * 1995-05-23 1996-11-28 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for supporting delivery of short message service messages to sleeping mobile stations in a cellular communications system
EP0763957A2 (en) * 1995-09-14 1997-03-19 Kabushiki Kaisha Toshiba A mobile radio communication system, a mobile radio communication network and a mobile radio station in said mobile radio communication system
GB2309138A (en) * 1996-01-11 1997-07-16 Nec Corp Message Storing and Forwarding in a Radio Communication System
ES2113811A1 (en) * 1994-11-30 1998-05-01 Motorola Inc Operacion waiting for a wireless communication device.
WO1998026621A2 (en) * 1996-12-09 1998-06-18 Telefonaktiebolaget Lm Ericsson (Publ) System and method of forwarding data calls in a radio telecommunications network
US5787357A (en) * 1991-10-17 1998-07-28 Nokia Telecommunications Oy Short message processing in a mobile exchange
WO1998044640A2 (en) * 1997-04-03 1998-10-08 Nokia Telecommunications Oy Delivery of short messages in a packet radio network
EP0872136A1 (en) * 1995-03-08 1998-10-21 Geotek Communications, Inc. A subscriber unit having a sleep mode and a dormant mode
WO1999026432A1 (en) * 1997-11-19 1999-05-27 Telefonaktiebolaget Lm Ericsson (Publ) Retention of radio resource connection for short message service message delivery in a cellular telephone network
EP0782359A3 (en) * 1996-01-01 1999-07-28 Nokia Mobile Phones Ltd. Mobile terminal having user-actuated pager mode
US6111865A (en) * 1997-05-30 2000-08-29 Qualcomm Incorporated Dual channel slotted paging
WO2001043465A1 (en) * 1999-12-07 2001-06-14 Robert Bosch Gmbh Mobile telecommunication terminal
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Cited By (60)

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US5787357A (en) * 1991-10-17 1998-07-28 Nokia Telecommunications Oy Short message processing in a mobile exchange
WO1994005124A1 (en) * 1992-08-11 1994-03-03 Nokia Telecommunications Oy Short message processing in a mobile exchange
AU665267B2 (en) * 1992-08-11 1995-12-21 Nokia Telecommunications Oy Short message processing in a mobile exchange
WO1994010810A1 (en) * 1992-10-27 1994-05-11 Telefonaktiebolaget Lm Ericsson A method and a system for activity supervision in a mobile telephone network
AU669763B2 (en) * 1992-10-27 1996-06-20 Telefonaktiebolaget Lm Ericsson (Publ) A method and a system for activity supervision in a mobile telephone network
WO1994016532A1 (en) * 1993-01-15 1994-07-21 Nokia Telecommunications Oy A method for starting a short message transmission in a mobile telephone network
US5628051A (en) * 1993-01-15 1997-05-06 Nokia Telecommunications Oy Method for starting a message transmission in a mobile telephone network
FR2707069A1 (en) * 1993-06-23 1994-12-30 Cofira Sa
EP0631452A1 (en) * 1993-06-23 1994-12-28 Compagnie Financiere Pour Le Radiotelephone, ( Cofira) S.A. Messaging centre management method for cellular radio messaging
WO1995001067A1 (en) * 1993-06-23 1995-01-05 Compagnie Financière Pour Radiotéléphone (Cofira) S.A. Messaging management method for cellular radio paging systems
WO1995029568A1 (en) * 1994-04-20 1995-11-02 Ericsson Inc. Method and apparatus for extending battery life in a digital cellular communications system
US5590396A (en) * 1994-04-20 1996-12-31 Ericsson Inc. Method and apparatus for a deep-sleep mode in a digital cellular communication system
US5920812A (en) * 1994-05-04 1999-07-06 Nokia Telecommunications Oy Call forwarding method and arrangement for a mobile terminating call
WO1995031076A2 (en) * 1994-05-04 1995-11-16 Nokia Telecommunications Oy Call forwarding method and arrangement for a mobile terminating call
WO1995031076A3 (en) * 1994-05-04 1995-12-21 Nokia Telecommunications Oy Call forwarding method and arrangement for a mobile terminating call
AU683163B2 (en) * 1994-05-04 1997-10-30 Nokia Telecommunications Oy Call forwarding method and arrangement for a mobile terminating call
WO1996010895A1 (en) * 1994-09-30 1996-04-11 Qualcomm Incorporated Method and apparatus for providing broadcast messages in a communications network
EP1175118A3 (en) * 1994-09-30 2005-03-09 QUALCOMM Incorporated Method and apparatus for providing broadcast messages in a communications network
US7035627B1 (en) 1994-09-30 2006-04-25 Qualcomm Incorporated Method and apparatus for providing broadcast messages in a communications network
US6157815A (en) * 1994-09-30 2000-12-05 Qualcomm Incorporated Method and apparatus for providing broadcast messages in a communications network
EP1175118A2 (en) * 1994-09-30 2002-01-23 Qualcomm Incorporated Method and apparatus for providing broadcast messages in a communications network
ES2113811A1 (en) * 1994-11-30 1998-05-01 Motorola Inc Operacion waiting for a wireless communication device.
EP0872136A1 (en) * 1995-03-08 1998-10-21 Geotek Communications, Inc. A subscriber unit having a sleep mode and a dormant mode
EP0872136A4 (en) * 1995-03-08 1999-04-21 Geotek Communications Inc A subscriber unit having a sleep mode and a dormant mode
WO1996028945A1 (en) * 1995-03-10 1996-09-19 Telefonaktiebolaget Lm Ericsson (Publ) A method of providing service information to subscribers in a cellular telecommunications network
WO1996038010A1 (en) * 1995-05-23 1996-11-28 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for supporting delivery of short message service messages to sleeping mobile stations in a cellular communications system
US5797094A (en) * 1995-05-23 1998-08-18 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for supporting the delivery of short message service messages to sleeping mobile stations in a cellular communications system
EP0763957A3 (en) * 1995-09-14 1999-10-27 Kabushiki Kaisha Toshiba A mobile radio communication system, a mobile radio communication network and a mobile radio station in said mobile radio communication system
EP0763957A2 (en) * 1995-09-14 1997-03-19 Kabushiki Kaisha Toshiba A mobile radio communication system, a mobile radio communication network and a mobile radio station in said mobile radio communication system
EP0782359A3 (en) * 1996-01-01 1999-07-28 Nokia Mobile Phones Ltd. Mobile terminal having user-actuated pager mode
GB2309138A (en) * 1996-01-11 1997-07-16 Nec Corp Message Storing and Forwarding in a Radio Communication System
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