WO2007035051A2 - Systeme et procede de communication multimode - Google Patents

Systeme et procede de communication multimode Download PDF

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Publication number
WO2007035051A2
WO2007035051A2 PCT/KR2006/003766 KR2006003766W WO2007035051A2 WO 2007035051 A2 WO2007035051 A2 WO 2007035051A2 KR 2006003766 W KR2006003766 W KR 2006003766W WO 2007035051 A2 WO2007035051 A2 WO 2007035051A2
Authority
WO
WIPO (PCT)
Prior art keywords
mode
mce
communication
information
accessing
Prior art date
Application number
PCT/KR2006/003766
Other languages
English (en)
Other versions
WO2007035051A3 (fr
Inventor
Kwang-Ryul Jung
Hye-Yeon Kwon
Ae-Soon Park
Original Assignee
Electronics And Telecommunications Research Institute
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
Priority claimed from KR1020060049256A external-priority patent/KR100678522B1/ko
Application filed by Electronics And Telecommunications Research Institute filed Critical Electronics And Telecommunications Research Institute
Priority to US12/067,909 priority Critical patent/US8185108B2/en
Publication of WO2007035051A2 publication Critical patent/WO2007035051A2/fr
Publication of WO2007035051A3 publication Critical patent/WO2007035051A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/12—Inter-network notification
    • 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
    • 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
    • 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 a multi-mode communication system and a method thereof. More particularly, the present invention relates to a multi-mode communication system that can efficiently perform various types of wireless access.
  • Power consumption is an issue for various wireless communication devices such as a conventional mobile communication terminal, a portable Internet terminal, a wireless personal area network (WPAN), or a sensor network node. Accordingly, the communication devices stay in an idle state when they are not in a communication state such that they can maintain a standby state while using a minimum amount of power when no data is communicated. This can be represented as sleep and awake, in which user equipment sleeps during the idle state while using the minimum amount of power and periodically wakes up for receiving and processing broadcasting information or paging information from a system.
  • WPAN wireless personal area network
  • the communication apparatus stays in the idle state after being applied with power and participates in minimal operation until receiving a user's request, and periodically wakes up at a predetermined time slot for receiving broadcasting information from a base station or a coordinator (i.e., an access point) and updating relevant information, and responds to the user's request.
  • a base station or a coordinator i.e., an access point
  • the communication apparatus receives paging information from a base station or the coordinator at the corresponding time slot, compares a received ID and its own ID, and performs a paging response process when the two IDs are identical. In addition, the communication apparatus registers a new location with the coordinator when a location of the UE is changed as it moves to another location.
  • a periodic pooling of the UE in the idle state causes power consumption of the communication apparatus due to state transition and data transmitting/receiving, and accordingly, an operation time of the UE is significantly reduced.
  • the multi-mode UE when UE in which various wireless access techniques are integrated is used, that is, when multi-mode UE is used, the multi-mode UE must be periodically operated in accordance with respective idle states of all radio access systems that the multi-mode UE can access. Therefore, power of the multi-mode UE is more quickly exhausted since each radio access system has a different sleep/awake time. In the worst scenario, the multi-mode UE must be awake all the time, and accordingly, the purpose of the idle state becomes redundant.
  • FlG. 1 is a block diagram of a conventional multi-mode wireless communication system that provides various wireless access modes.
  • a conventional multi-mode wireless communication system includes user equipment (UE) 10, a first radio access system (AS) 20, a second radio AS 30, a third radio AS 40, a first mobility control entity (MCE) 50, a second MCE 60, and a third MCE 70.
  • the UE 10 includes a plurality of communication protocols and provides multi-mode communication, the first, second, and third radio ASs 20, 30, and 40 respectively perform wireless access in accordance with multi-mode selection of the UE 10, and the first, second, and third MCEs 50, 60, and 70 respectively perform mobility management of the UE 10, user authorization, and access control.
  • the conventional multi-mode wireless communication system repeats a sleep/awake operation 7 according to communication periods (operation periods and paging periods) 21, 22, and 23 of the first, second, and third ASs 20, 30, and 40, and in the worst case, the conventional multi-mode wireless communication system stays in the awake state waiting for a process corresponding to a received message broadcasted through each radio access and a paging request, and therefore, advantages of the idle state cannot be realized and power is unnecessarily wasted.
  • the MSC that is commonly used for respective radio access systems, and the MSC adds information on a specific system that processes the paging message to the paging message and transmits the paging message to the respective radio access systems.
  • the specific system may include a GSM system or a WCDMA system.
  • [11] 1 It is available only for the same type of systems (e.g., GSM system and WCDMA system) that can share an MSC.
  • GSM system and WCDMA system e.g., GSM system and WCDMA system
  • IP Internet Protocol
  • the MSC does not know which radio access system that the multi-mode UE in the idle state is waiting for, and thus the paging message must be transmitted to all the radio access systems involved with the multi-mode UE.
  • the present invention has been made in an effort to provide a multi-mode communication system that can efficiently perform various types of radio access, and a method thereof.
  • An exemplary multi-mode communication method is provided to multi-mode user equipment (UE) that provides multi-mode communication by control of a multi-mode control entity (MMCE) connected with a plurality of MCEs, wherein the multi-mode UE accesses a network through the MCEs.
  • UE multi-mode user equipment
  • MMCE multi-mode control entity
  • the multi-mode communication method includes: a) accessing a first MCE by using a first mode among a plurality of modes for accessing the plurality of MCEs; b) communicating data with the first MCE; c) receiving a paging request for accessing a second MCE from the first MCE, the paging request transmitted by the MMCE; d) analyzing the paging request, putting the first mode in a sleep state and waking up a second mode for accessing the second MCE according to the analysis; and e) accessing the second MCE by using the second mode in the awake state.
  • An exemplary multi-mode communication method provides multi-mode communication of multi- mode user equipment (UE) that accesses a plurality of MCEs.
  • the multi-mode communication method includes: a) receiving information on an access state of the multi- mode UE, the access state information transmitted from a first MCE; b) storing the information in a table in which a state of the multi-mode UE is stored; c) receiving a paging request from a second MCE; d) searching through the table according to the paging request; and e) transmitting the paging request to the first MCE that is currently being used by the multi-mode UE in accordance with the table searching.
  • the table stores awake mode information corresponding to the types of communication protocols and Internet Protocol (IP) address information used by the multi-mode UE.
  • IP Internet Protocol
  • An exemplary multi-mode accessing unit of a multi-mode communication system includes a first communication module, a second communication module, and an interworking control module.
  • the multi-mode communication system accesses a network through a plurality of MCEs and provides multi-mode communication by an MMCE that accesses the MCEs.
  • the first communication module has a first communication interface and accesses a first MCE.
  • the second communication module has a second communication interface and accesses a second MCE.
  • the interworking control module receives a specific paging request from the MMCE, analyzes the paging request, and accesses the first MCE or the second MCE by putting the first communication module or the second communication module into a sleep mode or an awake mode.
  • the interworking control module performs initial access by using a communication module that has the longest sleep interval among the first communication module or the second communication module.
  • the multi-mode communication system includes integrating idle states that vary according to an access mode of the multi-mode UE and managing the integrated idle states by using an MMCE, and accordingly, minimization of power consumption due to access to multiple radio access systems of the multi-mode UE can be achieved.
  • FIG. 1 is a block diagram of a conventional multi-mode wireless communication system that provides various wireless access modes.
  • FIG. 2 is a block diagram of a multi-mode communication system according to an exemplary embodiment of the present invention.
  • FIG. 3 is a block diagram of a multi-mode UE of the multi-mode communication system according to the exemplary embodiment of the present invention.
  • FIG. 4 is a flowchart showing a multi-mode communication method of the multi- mode communication system according to the exemplary embodiment of the present invention. Best Mode for Carrying Out the Invention
  • a module means a unit that performs a specific function or operation, and can be realized by hardware or software, or a combination of both.
  • FIG. 2 is a block diagram of a multi-mode communication system according to the exemplary embodiment of the present invention.
  • the multi-mode communication system includes multi-mode user equipment (UE) 100, radio access systems (ASs) 210, 220, and 230, mobile control entities (MCEs) 310, 320, and 330, and a multi-mode control entity (MMCE) 400.
  • UE multi-mode user equipment
  • ASs radio access systems
  • MCEs mobile control entities
  • MMCE multi-mode control entity
  • the multi-mode communication system uses three radio ASs 210, 220 and 230 and three MCEs 310, 320, and 330, and a wireless communication mode of the multi-mode UE 100 is described in three modes, but the number of wireless communication modes can be increased or decreased.
  • the multi-mode UE 100 has three radio access interfaces that perform a first communication, a second communication, and a third communication through three radio interfaces RiI, Ri2, and Ri3 according to three different communication protocols, and changes communication mode in accordance with a paging request transmitted from an MCE.
  • the multi-mode UE 100 is assigned three different IP addresses for the respective radio interface RiI, Ri2, and Ri3 corresponding to the first, second, and third communications.
  • the multi-mode UE 100 has a communication period 102 according to a communication period 222 of the radio AS 220 that the multi-mode 100 accesses.
  • the communication period 222 includes an operation period and a paging period, and the multi-mode UE 100 has a sleep-mode period 102 according to the communication period 222 of the wireless AS 220.
  • the multi-mode UE 100 performs initial access to the radio ASs 210, 220, and 230 in accordance with an access scheme that consumes a minimum amount of power for the initial access.
  • the access scheme used for the initial access has the longest sleep interval.
  • the multi-mode UE 100 performs the initial access based on the duration of a sleep mode, a user's decision, intensity of a received signal, or the last access information stored in a subscriber identify module (SIM) card may affect the performance of initial access.
  • SIM subscriber identify module
  • the radio ASs 210, 220, and 230 are respectively controlled by the MCEs 310, 320, and 330 respectively connected thereto, have preferred communication periods 212, 222, and 223, respectively, and wirelessly communicate with the multi-mode UE according to a selected communication mode.
  • the MCEs 310, 320, and 330 are respectively connected with the corresponding radio ASs 210, 220, and 230, and manage mobility of the multi-mode UE 100 accessing the corresponding AS, user authorization, and access control. Particularly, each MCE 310, 320, and 330 generates state information of the multi-mode UE 100 that accesses the corresponding MCE and provides the state information to the multi- mode control entity 400.
  • the state information of the multi-mode UE 100 includes IP information, communication protocol information, a current access state, and ID information.
  • the MMCE 400 is connected with the MCEs 310, 320, and 330, stores the state information transmitted from the multi-mode UE 100, generates a paging message in response to a paging request or a broadcasting request transmitted from another network and a paging request transmitted from the MCEs 310, 320, and 330, and transmits the paging message to the multi-mode UE 100 based on a table in which the state information of the multi-mode UE 100 is stored.
  • the MMCE 400 stores the state information of the multi-mode UE 100 in the form of a table as shown in Table 1 and manages the information. [42] Table 1
  • the multi-mode communication system performs a sleep/awake operation corresponding to a main system rather than entire systems that the multi-mode communication system accesses, power consumption can be minimized and efficient paging can be achieved.
  • FIG. 3 is a detailed block diagram of the multi-mode communication system according to the exemplary embodiment of the present invention.
  • the multi-mode UE 100 includes a multi-mode access unit 110, a control module 120, a display module 130, an input module 140, and a voice process module 150.
  • the multi-mode access unit 110 includes a first communication module 112, a second communication module 113, a third communication module 114, an in- terworking control module 115, and a subscriber information storing module 116, and it puts an awake communication module into a sleep state or wakes up a sleeping communication module according to a paging request of the MMCE 400 of FIG. 2. That is, the multi-mode access unit 110 can minimize power consumption by controlling the communication module in accordance with the paging request of the MMCE 400, thereby efficiently performing a paging operation.
  • the first communication module 112 includes a first radio interface (RiI), and accesses the first radio AS 210 of FlG. 2 by using the corresponding communication protocol.
  • the second communication module 113 includes a second radio interface (Ri2), and accesses the second radio AS 220 of FlG. 2 by using the corresponding communication protocol.
  • the third communication module 114 includes a third radio interface (Ri3), and accesses the third radio AS 230 of FlG. 2 by using the corresponding communication protocol.
  • the subscriber information storing module 116 stores subscriber information.
  • the subscriber information includes information (i.e., communication information on telecommunication companies, such as SKT, KTF, LGT, Hanaro, etc.) on a system with which a user is registered, information on cost for each access, information on mobility support for each access, subscriber ID information, and information on the last radio access system that the multi-mode UE 100 had accessed before being turned off.
  • the subscriber information storing module 116 according to the exemplary embodiment of the present invention is installed as a form of a subscriber identity module (SIM) card in the multi-mode UE 100.
  • SIM subscriber identity module
  • the interworking control module 115 controls the first communication module 112, the second communication module 113, the third communication module 114, and the subscriber information storing module 116, and controls the corresponding communication modules 112, 113, and 114 according to the paging request transmitted from the MMCE 400. That is, the interworking control module 115 changes a communication module according to the paging request transmitted from the MMCE 400 through a communication module used for current access, and accesses an MCE in accordance with the changed communication module. In this case, the interworking control module 115 receives the paging request, compares a received ID and its own ID, and performs a paging operation when the two IDs are identical.
  • the interworking control module 115 provides information stored in the subscriber information storing module 116 to the MCEs 310, 320, and 330 through the first, second, or third communication modules 112, 113, or 114 that has been accessing the radio access systems 210, 220, and 230 of FIG. 2.
  • the control module 120 controls an internal module of the multi-mode UE 100, and performs functions such as an application program control, an input/output control, and a voice process control.
  • the display module 130 provides processed information to a user in accordance with a control of the control module 120.
  • the input module 140 receives information from the user and forwards the in- formation to the control module 120.
  • the voice process module 150 processes voice information transmitted from the control module 120 and provides the processed voice information to the user, and processes voice information from the user and provides the processed voice information to the control module 120.
  • Such multi-mode UE has merits of reducing power consumption and promptly responding to a paging request, and thus it wakes up a sleeping communication module or puts the awake communication module in the sleep mode according to the paging request that has been transmitted through a communication module in the awake mode.
  • FIG. 4 is a data flowchart showing a multi-mode communication method of the multi-mode communication system according to an exemplary embodiment of the present invention.
  • MCE 320 changes a communication module in accordance with a paging request and accesses the third MCE 330.
  • the multi-mode UE 100 selects a communication module for performing initial access. Then, the initial access is performed in accordance with an access scheme that consumes a minimal amount of power. That is, an access scheme having the longest sleep interval is used for the initial access.
  • an access scheme having the longest sleep interval is used for the initial access.
  • the multi-mode UE 100 performs the initial access based on the duration of a sleep-mode, user's decision, intensity of a received signal, or final access information stored in a SIM may affect the decision of the access scheme.
  • the multi-mode UE 100 selects the second communication module for initial access in step SlOO, and transmits a registration (authorization) request message to the second MCE 320 in step S 102.
  • the registration (authorization) request message includes UE information stored in the multi-mode UE 100, the UE information including IP information, subscriber information, and medium access control (MAC) information.
  • the second MCE 320 performs authorization in response to the registration
  • the registration request transmitted to the multi-mode UE 100 from the second MCE 320 includes multi-mode UE state information such as IP information, communication protocol information, and current access state information.
  • the second MCE 320 registers the authorized multi-mode UE 100 as
  • UE to be managed, and manages the multi-mode UE.
  • the MMCE 400 stores the information on the state of the multi-mode UE 100 in the table according to the registration request in step S 108, and transmits a response to the MCE 320 in response to the registration request in step Sl 10. In this case, the MMCE 400 stores information on the multi-mode UE 100 in the table for managing the multi- mode UE 100.
  • the second MCE 200 transmits a response to the multi- mode UE 100 in response to the registration (authorization) request in order to inform the completion of the registration in step Sl 12.
  • the multi-mode UE 100 operates with the second MCE 320 in the awake mode according to the response to the registration (authorization) request, and communicates data with the second MCE 320 in step Sl 14.
  • all the communication modules excluding the second communication module 320 that accesses the second MCE 32, are in the sleep mode.
  • the MMCE 400 receives a broadcasting message or a paging request transmitted from another network, or receives a paging request from the third MCE 330 in step Sl 18.
  • the paging request transmitted from the third MCE 330 is formed by a message received from another UE that uses the third communication, in step Sl 16.
  • the MMCE 400 analyzes the received paging request and searches through the table in step S 120, and transmits a paging request to the second MCE 320 that is currently being used by the multi-mode UE 100 according to the search of the table in step S 122.
  • the paging request transmitted to the second MCE 320 from the MMCE 400 includes paging information for using the third communication.
  • the second MCE 320 receives the paging request from the MMCE 400, and transmits the received paging request to the multi-mode UE 100 in step S 124.
  • the multi-mode UE 100 receives and analyzes the paging request in step S 126, and puts the third communication module in the awake mode and the second communication in current use into the sleep mode based on paging information included in the paging request such that the communication module is changed, in step S 128.
  • the paging information includes information for using the third communication.
  • the multi-mode UE 100 receives the paging request, compares a received ID and its own ID, and performs a paging process when the two IDs are identical.
  • the multi-mode UE 100 operates in the awake mode with the third MCE
  • the multi-mode UE changes a radio access system in the awake mode in accordance with a paging request transmitted from the MMCE, and accordingly, power consumption can be efficiently reduced and a paging operation can be efficiently performed.
  • the above-described exemplary embodiment of the present invention may be realized by an apparatus and a method, but it may also be realized by a program that realizes functions corresponding to configurations of the exemplary embodiment or a recording medium that records the program. Such a realization can be easily performed by a person skilled in the art.

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

Abstract

La présente invention concerne un système et procédé de communication multimode. Ce système utilise un premier mode d'une pluralité de modes de communication pour l'accès à une première entité MCE (Mobility Control Entity) d'une pluralité de telles entités, et communique les données avec la première MCE. Le système de communication multimode reçoit une demande de recherche qui a été émise depuis une entité MMCE (Multi-Mode Control Entity) en vue d'un accès à une deuxième MCE depuis la première. Le système analyse alors la demande, met en sommeil le premier mode, et, sur la base de l'analyse, réveille un deuxième mode convenant à l'accès à la deuxième MCE. Par la suite, l'équipement utilisateur multimode accède à la deuxième MCE dans le deuxième mode qui a été réveillé. L'invention propose de la sorte une entité MMCE de gestion multimodale permettant d'intégrer et gérer l'état repos pour chaque mode d'accès d'un équipement utilisateur multimode, d'où une réduction de la consommation électrique nécessaire à l'accès dudit équipement au système d'accès radio. L'invention permet en outre une certaine puissance dans le traitement des modifications d'accès de l'équipement utilisateur au système radio par suite d'une demande de recherche.
PCT/KR2006/003766 2005-09-23 2006-09-22 Systeme et procede de communication multimode WO2007035051A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/067,909 US8185108B2 (en) 2005-09-23 2006-09-22 Multi-mode communication system and method thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20050088724 2005-09-23
KR10-2005-0088724 2005-09-23
KR1020060049256A KR100678522B1 (ko) 2005-09-23 2006-06-01 다중 모드 통신 시스템 및 그 방법
KR10-2006-0049256 2006-06-01

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WO2007035051A2 true WO2007035051A2 (fr) 2007-03-29
WO2007035051A3 WO2007035051A3 (fr) 2007-06-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104897260A (zh) * 2015-06-17 2015-09-09 辽宁因泰立电子信息有限公司 一种智能车辆动态称重***

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Publication number Priority date Publication date Assignee Title
US20050076254A1 (en) * 2003-10-01 2005-04-07 Robinson Michael A. Sleep recovery circuit and method
EP1571812A2 (fr) * 2004-03-03 2005-09-07 Nec Corporation Négociation de mode de communication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050076254A1 (en) * 2003-10-01 2005-04-07 Robinson Michael A. Sleep recovery circuit and method
EP1571812A2 (fr) * 2004-03-03 2005-09-07 Nec Corporation Négociation de mode de communication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104897260A (zh) * 2015-06-17 2015-09-09 辽宁因泰立电子信息有限公司 一种智能车辆动态称重***

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