WO2001010150A1 - Systeme de communication et station mobile bimode - Google Patents

Systeme de communication et station mobile bimode Download PDF

Info

Publication number
WO2001010150A1
WO2001010150A1 PCT/EP2000/007298 EP0007298W WO0110150A1 WO 2001010150 A1 WO2001010150 A1 WO 2001010150A1 EP 0007298 W EP0007298 W EP 0007298W WO 0110150 A1 WO0110150 A1 WO 0110150A1
Authority
WO
WIPO (PCT)
Prior art keywords
protocol
pdc
network
communication protocol
wcdma
Prior art date
Application number
PCT/EP2000/007298
Other languages
English (en)
Inventor
Rebecca Gabzdyl
Original Assignee
Nokia Mobile Phones Limited
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 Nokia Mobile Phones Limited filed Critical Nokia Mobile Phones Limited
Priority to AU61607/00A priority Critical patent/AU6160700A/en
Publication of WO2001010150A1 publication Critical patent/WO2001010150A1/fr

Links

Classifications

    • 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
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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

  • This invention relates to mobile telephony and in particular to telecommunications devices that are capable of operating in at least two telecommunications modes.
  • GSM Global System for Mobile
  • AMPS analogue
  • Such devices are known as dual-band, the device being able to operate using the same basic protocol but at more than one frequency, and dual-mode, in which a device can operate with more than protocol.
  • dual-mode in which a device can operate with more than protocol.
  • Such a device allows a user to communicate using one of two modes or standards.
  • the currently emerging so-called 3rd generation standards that are currently being negotiated use a Code Division Multiple Access (CDMA) system with varying power levels for transmission. This mode can result in relatively high power consumption.
  • CDMA Code Division Multiple Access
  • a portable communications device operative with at least two communication protocols, a first of which results in a lower power consumption by the device whilst in a standby status, the device being arranged to default to the first protocol whenever the device enters a standby status.
  • the invention is particularly applicable to for a device operable with a TDMA communication protocol and a CDMA communication protocol, the TDMA communication protocol being the first protocol and in particular the first protocol being PDC and the CDMA protocol being WCDMA.
  • the device is arranged to alter its mode of operation to the second communication protocol in response to a paging signal conforming to the first communication protocol.
  • the device may be arranged, in response to the paging signal, to transmit a polling signal conforming to the second communication protocol.
  • a mobile communications system comprising a first network operable with a first communication protocol; a second network operable with a second communication protocol; a portable communication device operable with the first and the second communication protocols; wherein the first communication protocol results in a lower power consumption by the device whilst in a standby status than the second communication protocol, the device being arranged to default to the first protocol whenever the device enters a standby status.
  • the first network in response to a request from the second network, is arranged to send a paging signal to the device to cause the device to alter its mode of operation to the second communication protocol.
  • the device may be arranged, in response to the paging signal, to transmit a polling signal conforming to the second communication protocol and, in response to the polling signal, the second network is arranged to establish a connection to the device.
  • a portable communications device operative with at least two communication protocols, a first of which results in a lower power consumption by the device whilst in an active status, the device being arranged to default to the first protocol whenever the device enters an active status.
  • Figure 1 shows an embodiment of a mobile communications device according to the invention
  • Figure 2 shows the operational components of a mobile communications device according to the invention
  • Figure 3 shows a typical arrangement of a mobile communications network, operable with two communications protocols.
  • Figure 1 shows an embodiment of a mobile communications device according to the invention.
  • the device shown is a mobile phone handset 10 and comprises a display 101 , data entry means in the form of a keypad 102, an antenna 103, an earpiece 104 and a microphone 105.
  • the handset 10 is operable with two communications protocols.
  • the mobile handset is operable with the PDC protocol (widely adopted in
  • Figure 2 shows the operational components of the handset 10 that are of interest as far as describing the invention is concerned.
  • the handset may also include other components which are not shown.
  • the handset comprises an antenna 103 for transmitting and receiving radio frequency (RF) signals.
  • the antenna 103 is coupled to a transceiver 106, 107 for each protocol.
  • Transceiver 106 receives and transmits signals conforming to PDC and transceiver 107 receives and transmits signals conforming to WCDMA.
  • the transceivers are coupled to a baseband unit 108 which converts the received RF signals from the transceivers 106, 107 into a baseband signal and converts baseband signals into RF signals to be transmitted via the transceivers 106, 107.
  • the baseband unit 108 is coupled to a processor 109 which controls the operation of the baseband unit and receives inputs from and outputs to the display 101 , keypad 102 and Random Access Memory (RAM) 110.
  • processor 109 controls the operation of the baseband unit and receives inputs from and outputs to the display 101 , keypad 102 and Random Access Memory (RAM) 110.
  • RAM Random Access Memory
  • the processor unit controls the operation of the device 10.
  • RAM 110 stores information relating to the default mode of operation of the device and, in response to this information, the processor selects which transceiver 106, 107 to use when the device enters a standby state.
  • the information stored in the RAM 110 specifies that the device is to default to the PDC protocol whenever the device enters the standby state.
  • the processor switches in the PDC transceiver 106 and switches out the WCDMA transceiver 107.
  • the device therefore sends out polling signals according to the PDC protocol.
  • FIG 3 shows a typical arrangement of a mobile communications system, operable with two communications protocols.
  • PDC the mobile telephony standard adopted in Japan
  • WCDMA the two communications protocols of PDC (the mobile telephony standard adopted in Japan) and WCDMA will be described.
  • the communications system comprises a first network 2 operative with the PDC protocol.
  • This network comprises PDC base stations 20 and PDC-MSCs 22.
  • the PDC base stations 20 transmit and receive signals conforming to the PDC protocol.
  • These PDC base stations 20 communicate with the PDC Mobile Switching Centres (MSCs) 22.
  • Element 24 encompasses other PDC- BS and PDC-MSC 22 which make up a PDC network.
  • the communications system also includes a second network 3 operative with the WCDMA protocol.
  • This network comprises base stations 30 and WCDMA Mobile Switching Centres (MSCs) 32.
  • the WCDMA base stations 30 transmit and receive signals conforming to the WCDMA protocol.
  • These WCDMA base stations 30 communicate with the WCDMA-MSCs 32.
  • Element 34 encompasses other WCDMA-BS and WCDMA-MSC 22 which make up a WCDMA network.
  • the handset 10a when the handset 10a wants to make a call to the handset 10b, the handset 10a transmits a signal which is picked up by a neighbouring base station 20a or 30a, passed via a Mobile Switching Centre 22a/32a around the network 2,3 from where it is routed to the Mobile Switching Centre 22b/32b associated with the base station 20b/30b which is in communication with the destination handset 10b.
  • the communication system also has at least one Home Location Register (HLR) 46 which stores subscriber parameters. This information is added to the HLR whenever a new subscriber is added to the system. The data contained by the HLR is remotely accessed by the MSCs in the networks.
  • HLR Home Location Register
  • VLR Visitor Location Register
  • VLR Visitor Location Register
  • the VLR contains a copy of most of the data stored in the HLR 46. It is however temporary data which exists only for as long as the mobile device is active in the area covered by the VLR.
  • the VLR 26/36 also typically includes information relating to the status of the device (busy/standby etc.), location area identity etc.
  • the HLR 46 includes information regarding the current VLR 26/36 with which a mobile device 10 is registered.
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • a communications device is pre-configured to enter the most efficient mode when in standby.
  • the phone In the example of a PDC/WCDMA dual-mode phone, the phone is pre-configured to enter the PDC mode when in standby.
  • the device will have a standby time comparable with a single-mode PDC device.
  • a device may send, in the polling signal, information regarding the networks with which the device is operable.
  • the MSC also stores in the VLR details concerning the dual-modality of the mobile station.
  • the handset 10a When the handset 10 is in standby, the handset carries out duty cycles only. During each duty cycle, the handset 10a transmits a polling signal formatted according to the PDC protocol. When in the vicinity of a PDC base station 20, the polling signal is received by the PDC base station, for instance base station 20a. The PDC base station 20a then sends a signal to the PDC Mobile Switching Centre 22a associated with the receiving base station 20a and the PDC Mobile Switching Centre 22a registers the location of the mobile station 10a in the associated Visitor Location Register (VLR) 26. If the polling signal also includes information regarding the other networks with which the handset can operate, this information is also stored in the VLR 26 associated with PDC-MSC 22a.
  • VLR Visitor Location Register
  • the receiving MSC In response to a polling signal which includes information relating to other networks, the receiving MSC messages the HLR 46 of the other network(s) with the information. Alternatively this information can be stored permanently in the HLR from the time the user of the device first registers with the service provider.
  • the transmitting device 10b transmits a signal in PDC mode which is picked up by the PDC-BS 20b.
  • the PDC mobile switching centre 22b receives the signal from the PDC-BS 20b, it interrogates the HLR and detects that the mobile station being called is registered with the PDC-MSC 22a.
  • the call is therefore switched through to the PDC-MCS 22a which, in turn, passes the call to the base station 20a with which the mobile station 10a is associated.
  • the connection between the devices 10b and 10a is then established.
  • the processor 109 of the device 10a instructs the components of the device to default to the PDC mode of operation.
  • the device 10 resumes the transmission of polling signals on the PDC network during the duty cycles.
  • the mobile station 10a Since the mobile station 10a is programmed to enter the PDC mode whenever the mobile station is in standby, the mobile station 10a will not automatically register with the WCDMA network. Thus a call via the WCDMA network will not reach the mobile station when in PDC mode unless further action is taken.
  • the transmitting device 10b is operating in WCDMA mode.
  • the WCDMA mobile switching centre 32b receives a signal from the mobile station 10b, it interrogates the HLR 46 and detects that the mobile station being called is not registered with any MSC of the WCDMA network. However the information in the HLR 46 indicates that the device being called is registered with a PDC-MSC.
  • the WCDMA-MSC 32b therefore signals the identified network to see if the called device can be located. In this embodiment, the WCDMA-MSC 32b determines from the HLR 46 that the mobile station 10a is registered on the PDC network 2.
  • the MSC 32b therefore sends a message to the PDC network 2 in an attempt to try to locate the device.
  • the PDC network 2 interrogates the HLR 46, detects that the mobile station being called is registered with the PDC-MSC 22a and sends the message to PDC-MSC 22a.
  • the PDC-MSC 22a sends an acknowledgement message to the WCDMA- MSC 32b and sends a paging message to the destination mobile station 10a by means of the base station 20a.
  • the processor 109 of the mobile station 10a instructs the device to synchronise to the WCDMA network. This is achieved by the processor 109 switching in the WCDMA transceiver 107 and sending a polling signal conforming to the WCDMA protocol. This polling signal is picked up by the WCDMA base station 30a and sent to the WCDMA- MSC 32a. This causes the mobile station 10a to be registered on the WCDMA network and the WCDMA call from the mobile station 10b can proceed.
  • the processor 109 switches out the PDC transceiver 106.
  • the location details for the mobile station 10a are stored in the VLR 36 associated with the WCDMA-MSC 32a, these details now indicating that the mobile station 10a is registered with the WCDMA network.
  • the mobile station 10a When the call from mobile station 10b is ended, the mobile station 10a will automatically revert to PDC mode i.e. during the next duty cycle after the end of a call, the mobile station 10a will send a polling signal using the PDC protocol. This polling signal is picked up by the PDC network so that synchronisation with the PDC network is achieved and the HLR is updated accordingly.
  • the mobile station So that contact with the mobile station is not lost during the period when the mobile station is registering with a second network, the mobile station remains synchronised with a first network until synchronisation with the second network is achieved.
  • a user of a multi-mode device may wish to select the mode of operation of the device, for instance by selecting WCDMA rather than PDC when a high data rate application is to be used.
  • the device is provided with a over-ride option (e.g. via a user interface) to over-ride the default protocol.
  • this option is selected, the device proceeds to register with the selected network as described earlier.
  • the mobile station is configured to default to the protocol which uses less power consumption during standby. However, if the mobile station is unable to contact the network for this protocol the mobile station may be arranged to seek service with the alternative network.
  • the mobile station is preferably arranged such that it will continue to send polling signals via the default network protocol. However this may not be as frequently as when contact is possible.
  • the multi-mode device may be arranged to default, when active, to the mode which uses less power consumption when active. In the case of PDC and WCDMA this would be the PDC mode. If capacity is unavailable via the PDC network the device may be arranged to seek service with the alternative network.
  • the above description has focussed on a dual-mode PDC/WCDMA telephone.
  • the invention is applicable to any multi-mode phone where one operating protocol is more power efficient in standby.
  • the device would be arranged to default to the GSM mode since this results in less power consumption during standby than the WCDMA mode.
  • dual-mode devices have been discussed the invention is also applicable to devices with more than two modes of operation. For instance, a triple-mode telephone operative with AMPS/TDMA/CDMA would be arranged to default to the protocol which uses less power during standby.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne un système de communication comprenant un premier réseau (2) fonctionnant avec un premier protocole de communication; un second réseau (3) fonctionnant avec un second protocole de communication; et un appareil portable (10) fonctionnant avec un premier et un second protocoles de communication. Le premier protocole de communication permet une consommation d'énergie plus faible que le second protocole de communication, lorsque le dispositif est en mode veille. L'appareil est conçu de manière à choisir le premier protocole par défaut lorsque l'appareil entre en mode veille. L'appareil peut également être conçu pour choisir, par défaut, le protocole qui utilise le moins d'énergie en mode fonctionnement, lorsque l'appareil entre en mode fonctionnement.
PCT/EP2000/007298 1999-07-29 2000-07-27 Systeme de communication et station mobile bimode WO2001010150A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61607/00A AU6160700A (en) 1999-07-29 2000-07-27 Communication system and dual-mode mobile station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9917833A GB2352930A (en) 1999-07-29 1999-07-29 Multi-mode telecommunication device
GB9917833.7 1999-07-29

Publications (1)

Publication Number Publication Date
WO2001010150A1 true WO2001010150A1 (fr) 2001-02-08

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GB (1) GB2352930A (fr)
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WO2005048628A1 (fr) 2003-11-04 2005-05-26 Sony Ericsson Mobile Communications Ab Etablissement d'un liaison de communication par l'alimentation selective d'un emetteur-recepteur sur la base d'une demande de communication reçue par un autre emetteur-recepteur
WO2005094105A1 (fr) * 2004-03-10 2005-10-06 Motorola, Inc. Extensions du mode de fonctionnement dans des reseaux de communications sans fil
EP1608105A2 (fr) * 2004-06-18 2005-12-21 Fujitsu Limited Station mobile, programme de contrôle pour une station mobile, programme pour un serveur de gestion des appels et procédé de gestion des appels
EP1613106A1 (fr) 2004-06-28 2006-01-04 Nokia Corporation Dispositif de communication et procédé de transmission de données entre au moins deux dispositifs de communication
KR100693600B1 (ko) 2004-08-25 2007-03-14 주식회사 팬택앤큐리텔 하이브리드 이동통신 단말기 및 그 단말기의 동작 모드제어 방법
US9402234B2 (en) 2005-03-16 2016-07-26 Nec Corporation Mobile communication system, communication control method and a mobile station

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US6990362B2 (en) * 2003-12-16 2006-01-24 Motorola, Inc. Communication unit energy conservation apparatus and method

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EP0896493A2 (fr) * 1997-08-06 1999-02-10 Nec Corporation Appareil de communication connectable à plusieurs différents systèmes de communications

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US5299228A (en) * 1992-12-28 1994-03-29 Motorola, Inc. Method and apparatus of reducing power consumption in a CDMA communication unit
US5537415A (en) * 1994-11-08 1996-07-16 Microsoft Corporation Multi-channel personal messaging unit
EP0896493A2 (fr) * 1997-08-06 1999-02-10 Nec Corporation Appareil de communication connectable à plusieurs différents systèmes de communications

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007534221A (ja) * 2003-11-04 2007-11-22 ソニー エリクソン モバイル コミュニケーションズ， エービー 他の送受信機によって受信された通信要求に基づいて送受信機に選択的に電力を供給することにより、通信リンクを確立する方法。
JP4690336B2 (ja) * 2003-11-04 2011-06-01 ソニー エリクソン モバイル コミュニケーションズ， エービー 他の送受信機によって受信された通信要求に基づいて送受信機に選択的に電力を供給することにより、通信リンクを確立する方法。
US7768977B2 (en) 2003-11-04 2010-08-03 Sony Ericsson Mobile Communications Ab Establishing a communication link by selectively powering a transceiver based on a communication request received by another transceiver
CN100484316C (zh) * 2003-11-04 2009-04-29 索尼爱立信移动通讯股份有限公司 通过根据另一个收发信机接收的通信请求有选择地对收发信机供电来建立通信链路
WO2005048628A1 (fr) 2003-11-04 2005-05-26 Sony Ericsson Mobile Communications Ab Etablissement d'un liaison de communication par l'alimentation selective d'un emetteur-recepteur sur la base d'une demande de communication reçue par un autre emetteur-recepteur
WO2005094105A1 (fr) * 2004-03-10 2005-10-06 Motorola, Inc. Extensions du mode de fonctionnement dans des reseaux de communications sans fil
US7515934B2 (en) 2004-06-18 2009-04-07 Fujitsu Limited Mobile terminal, program for controlling mobile terminal, program for call-management server, and call management process
CN100456861C (zh) * 2004-06-18 2009-01-28 富士通株式会社 移动终端及其控制方法、呼叫管理服务器和呼叫管理方法
EP1608105A3 (fr) * 2004-06-18 2006-02-08 Fujitsu Limited Station mobile, programme de contrôle pour une station mobile, programme pour un serveur de gestion des appels et procédé de gestion des appels
EP1608105A2 (fr) * 2004-06-18 2005-12-21 Fujitsu Limited Station mobile, programme de contrôle pour une station mobile, programme pour un serveur de gestion des appels et procédé de gestion des appels
EP1613106A1 (fr) 2004-06-28 2006-01-04 Nokia Corporation Dispositif de communication et procédé de transmission de données entre au moins deux dispositifs de communication
US8199795B2 (en) 2004-06-28 2012-06-12 Nokia Corporation Communication device and data transmission method between at least two communication devices
KR100693600B1 (ko) 2004-08-25 2007-03-14 주식회사 팬택앤큐리텔 하이브리드 이동통신 단말기 및 그 단말기의 동작 모드제어 방법
US9402234B2 (en) 2005-03-16 2016-07-26 Nec Corporation Mobile communication system, communication control method and a mobile station
US9516619B2 (en) 2005-03-16 2016-12-06 Nec Corporation Mobile communication system, communication control method and a mobile station
US10064129B2 (en) 2005-03-16 2018-08-28 Nec Corporation Mobile communication system, communication control method and a mobile station
US20180359692A1 (en) * 2005-03-16 2018-12-13 Nec Corporation Mobile communication system, communication control method and a mobile station
US10531376B2 (en) 2005-03-16 2020-01-07 Nec Corporation Mobile communication system, communication control method and a mobile station

Also Published As

Publication number Publication date
AU6160700A (en) 2001-02-19
GB2352930A (en) 2001-02-07
GB9917833D0 (en) 1999-09-29
GB2352930A8 (en) 2001-07-11

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