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WO2011079810A1 - Procédé, dispositif, et système pour indiquer une cellule de groupe fermé d'abonnés (csg) - Google Patents

Procédé, dispositif, et système pour indiquer une cellule de groupe fermé d'abonnés (csg) Download PDF

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Publication number
WO2011079810A1
WO2011079810A1 PCT/CN2010/080534 CN2010080534W WO2011079810A1 WO 2011079810 A1 WO2011079810 A1 WO 2011079810A1 CN 2010080534 W CN2010080534 W CN 2010080534W WO 2011079810 A1 WO2011079810 A1 WO 2011079810A1
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WO
WIPO (PCT)
Prior art keywords
message
csg cell
terminal
information
cell
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.)
Ceased
Application number
PCT/CN2010/080534
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English (en)
Chinese (zh)
Inventor
房明
王济勇
尹丽坤
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
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Publication of WO2011079810A1 publication Critical patent/WO2011079810A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present application claims priority to Chinese Patent Application No. 200910238892.8, entitled “Method, Apparatus and System for Indicating CSG Cell", on December 31, 2009, the entire contents of which are incorporated herein by reference.
  • TECHNICAL FIELD The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a system for indicating a CSG cell.
  • GSM EDGE Radio Access Network GSM EDGE Radio Access Network
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • UTRAN Global Terrestrial Radio Access Network
  • CSG Closed Subscriber Group
  • the mobile terminal in the connected mode needs to measure the CSG cell and report its measured value to complete The mobility of the connection mode.
  • the terminal in the Cell Change Notification (CCN), or in the measurement report reporting process, when the terminal finds a CSG cell that satisfies the measurement reporting condition, it passes the Packet Cell Change Notification (PCCN) or The Packet Measurement Report (PMR) or the Packet Enhanced Measurement Report (PEMR) message is reported to each side of the network.
  • PCCN Packet Cell Change Notification
  • PMR Packet Measurement Report
  • PEMR Packet Enhanced Measurement Report
  • the terminal selects one of the following in the measurement report: Routing parameter information carrying the CSG cell , or carry CSG The frequency and scrambling code information of the cell.
  • the network side determines the subsequent process of the terminal, for example, notifying the terminal to perform cell change or notifying the terminal to perform cell handover.
  • the inventors have found that excessive resources are used in the reporting process in the prior art.
  • the embodiments of the present invention provide a method, an apparatus, and a system for indicating a CSG cell to save air interface resources.
  • a method comprising:
  • a device comprising:
  • a method of ... comprising:
  • a device includes:
  • the terminal in the connected mode detects the CSG cell that is allowed to access, and the terminal sends the first message to the network side device, where the terminal is
  • the first message that is reported to the network side device may indicate, by using the first indication information, that the network side device has a CSG cell that allows the terminal to access, and the first message does not carry the routing parameter of the CSG cell.
  • the control message bit resource consumption required for the information is further saved, and the terminal can notify the network side device more quickly whether there is a CSG cell that allows the terminal to access.
  • the network side device can also parse the first message more quickly to obtain the notification information sent by the terminal.
  • the network determines that the target cell to be handed over is a macro cell, the bit resource in the transmission process can be saved, and if the network The destination cell to be switched is a CSG cell, and the network side can still request the terminal to report BRIEF DESCRIPTION OF THE DRAWINGS
  • Figure 1 shows a schematic diagram of a system by way of example.
  • Figure 2 shows, by way of example, a schematic diagram of a method for indicating a CSG cell.
  • Figure 3 shows, by way of example, another method of indicating a CSG cell.
  • Figure 4 shows, by way of example, a schematic diagram of a method for indicating a CSG cell.
  • Figure 5 shows, by way of example, a schematic diagram of a unit of a network side device.
  • Figure 6 shows, by way of example, a schematic diagram of a unit of a terminal.
  • FIG. 1 shows, by way of example, a schematic diagram of a system 100 that includes a terminal 110 and a network side device 120.
  • terminal 110 is a terminal in connected mode, and terminal 110 moves from a cell located in the GERAN network to a CSG cell located in the UTRAN network or E-UTRAN network.
  • the terminal 110 finds that there is a CSG cell that allows the terminal 110 to access, the terminal 110 notifies the network side device 120.
  • the terminal 110 can perform the CSG cell in the UTRAN network or the E-UTRAN network.
  • the CSG cell is measured and reported to the network side device 120, and the report information may further include a measured value result of the CSG cell.
  • a home base station in an E-UTRAN network may be referred to as a Home eNodeB, and a home base station in a UTRAN network may be referred to as a Home NodeB, whether it is an E-UTRAN network or a home base station in a UTRAN network. They can be deployed in places such as homes or enterprises.
  • the cells of these home base stations can also be set to closed mode and mixed mode, and their cells can be called E-UTRAN CSG cells or UTRAN CSG cells, and E-UTRAN.
  • Hybrid cell or UTRAN Hybrid cell Hybrid cell or UTRAN Hybrid cell.
  • the home base station cell may be at least one of a home base station cell in the E-UTRAN network and a home base station in the UTRAN network
  • the CSG cell may include a CSG cell in the home base station cell and At least one of a hybrid cell (Hybrid Cell).
  • network side device 120 can be a base station subsystem (Base Station
  • BSS BSS
  • RNS Radio Network System
  • eNodeB evolved NodeB
  • home base station BSS
  • RNS Radio Network System
  • eNodeB evolved NodeB
  • the terminal When the terminal sends a measurement report of the CSG cell that meets the measurement reporting condition to the network side, the terminal selects one of the following in the measurement report: carrying the routing parameter information of the CSG cell, or carrying the frequency and interference of the CSG cell.
  • the code information includes indicating the corresponding frequency point information and the scrambling code information by means of a frequency point index or a cell index, where the scrambling code includes a Primary Scrambling Code (PSC) for the CSG cell in the UTRAN network and for the E- Physical layer Cell ID (PCI) of the CSG cell in the UTRAN network.
  • PSC Primary Scrambling Code
  • PCI E- Physical layer Cell ID
  • the terminal 110 when the terminal 110 does not report the parameters for performing PS handover to the CSG cell, such as routing parameters, but reports the frequency and scrambling code information of the CSG cell to the network side device 120, due to the frequency and interference of the CSG cell.
  • the code information is variable. Therefore, even if the terminal 110 reports the frequency and scrambling code of the CSG cell, the network side device 120 cannot uniquely determine a CSG cell by using the information reported by the terminal 110.
  • the inventor of the present invention has found that, in order to notify the network side device 120 that the CSG cell that is allowed to access is detected, if the terminal 110 does not report the routing parameter of the CSG cell to the network side device 120, the terminal 110 reports the frequency and scrambling code of the CSG cell. Information is not necessary.
  • an embodiment of the present invention provides a method of indicating a CSG cell by way of example. As shown in Figure 2, the method includes:
  • the terminal 110 in the connected mode sends a first message to the network side device 120, where the first message includes first indication information, where the first indication information is used to: indicate whether there is a CSG cell that allows the terminal 110 to access, And indicating the routing parameter information that does not carry the CSG cell in the first message, and the frequency point information and the scrambling code information indicating that the CSG cell is not carried in the first message.
  • first indication information is used to: indicate whether there is a CSG cell that allows the terminal 110 to access, And indicating the routing parameter information that does not carry the CSG cell in the first message, and the frequency point information and the scrambling code information indicating that the CSG cell is not carried in the first message.
  • the CSG cell may include at least one of a CSG cell in the E-UTRAN network and a CSG cell in the UTRAN network.
  • the connected mode terminal 110 may be a terminal that is performing data services, voice services, or simultaneous data and voice services, and may be, for example, a terminal in a packet transmission mode, a dedicated mode, or a dual transmission mode.
  • the following is an example to illustrate that the first indication information indicates that the first message does not carry the
  • the network side device 120 when both the terminal 110 and the network side device 120 support a packet switching (PS) switching operation, the network side device 120 notifies the terminal 110 that the network side device 120 supports the PS handover, but the network side device 120 has the PS.
  • the switching capability does not necessarily perform the PS handover.
  • the terminal 110 may not report the routing parameter information of the CSG cell to the network side device 120.
  • the terminal 110 may not carry the routing parameter in the measurement report sent to the network side device 120.
  • the terminal in the connected mode detects the CSG cell that is allowed to access, and the terminal sends the first message to the network side device, where the terminal generates the first message that is reported to the network side device.
  • An indication information indicates that the network side device has a CSG cell that allows the terminal to access, and the first message does not carry the routing parameter information of the CSG cell, and does not carry the frequency information of the CSG cell. 4 Yu code information. Therefore, when the terminal does not use the CSG cell routing parameter information to indicate the CSG cell that is allowed to access, the terminal can save the unnecessary frequency information and the scrambling code of the CSG cell in the first message sent to the network side device.
  • the terminal can implement the function of notifying the network-side candidate CSG cell with fewer bits, and saves valuable air interface resources compared with the frequency information and the scrambling code of the CSG cell or the information of other CSG cells. At the same time, it further saves the setting of routing parameter information or frequency point and scrambling code information in the first message. Time, the terminal can notify the network side device more quickly whether there is access to the terminal.
  • the CSG cell, and the network side device can also parse the first message to obtain the notification information sent by the terminal, and correspondingly, if the network determines that the target cell to be handed over is a macro cell, the bit resource in the transmission process can be saved. If the network determines that the target cell to be handed over is a CSG cell, the network side can still request the terminal to report other information of the CSG cell without affecting subsequent PS handover.
  • Another method of indicating a CSG cell is provided by way of example in one embodiment of the invention. As shown in Figure 3, the method includes:
  • the terminal 110 in the connected mode sends a first message to the network side device 120, where the first message includes first indication information, where the first indication information is used to: indicate whether there is a CSG cell that allows the terminal 110 to access, and the indication
  • the first message does not carry the routing parameter information of the CSG cell, and the frequency point information and the scrambling code information indicating that the CSG cell is not carried in the first message.
  • the first indication information in the first message is not limited to indicating one or more CSG cells that allow terminal 110 to access.
  • the first message may be one of a packet measurement report PMR message, a packet enhanced measurement report PEMR message, and a packet cell change notification PCCN message.
  • the size of the bit area occupied by the first indication information in the first message may be one bit, two bits or more.
  • the first indication information may further indicate: whether there is a location that allows the terminal to access Determining at least one of a CSG cell in the UTRAN network and a CSG cell in the E-UTRAN network that allows the terminal to access.
  • the terminal 110 may further include: the terminal 110 receiving, by the network side device 120, whether the indication information for the CSG cell packet switching PS handover parameter is reported.
  • the indication information may be carried by a message such as a packet measurement command message, a packet cell change command message, or a system message.
  • the terminal 110 receives the network side
  • the device 120 sends the indication information for the CSG cell PS handover parameter
  • the terminal 110 sends the first message to the network side device 120.
  • the network side device 120 receives the first message, where the first message includes first indication information.
  • the first indication information is used to indicate whether there is a CSG cell that allows the terminal 110 to access.
  • the network side device 120 may determine whether there is a CSG cell that allows the terminal 110 to access, and the CSG cell may be a CSG cell. It can also be multiple CSG cells.
  • the network side device 120 sends a second message according to the first message, where the second message includes indication information indicating whether the terminal reports a handover parameter for performing CSG cell PS handover.
  • the network side device 120 transmits a second message to the terminal 120 according to the indication.
  • the second message may be one of a packet cell change continuation message and a packet cell change command message bearer.
  • the network side device 120 sends the indication information indicating whether the terminal reselects to the CSG cell to the terminal by using a Packet Cell Change Continue (PCCC) message or a Packet Cell Change Order (PCCO) message. 110.
  • the indication information also indicates that the terminal 110 does not report the handover parameter used for performing the CSG cell PS handover to the network side device 120.
  • the terminal in the connected mode sends a first message to the network side device to indicate whether there is a CSG cell that allows the terminal 110 to access, and indicates that the first message does not carry the routing parameter information of the CSG cell, and the indication
  • the message does not carry the frequency information and the scrambling code information of the CSG cell, and can save unnecessary control message bit resources required for carrying the frequency information and the scrambling information of the CSG cell in the first message sent to the network side device. Consumption.
  • the terminal can implement the function of notifying the network-side candidate CSG cell with fewer bits. Compared with reporting the frequency and scrambling code of the CSG cell or reporting the information of other CSG cells, the terminal can save valuable air interface resources.
  • the terminal can notify the network side device whether the device exists or not.
  • the CSG cell that the terminal accesses, and the network side device can also parse the first message to obtain the notification information sent by the terminal, and then instruct the terminal to reselect to the CSG cell. Therefore, when the network side determines that the target cell to be subsequently switched by the terminal is a macro cell, or instructs the terminal to perform reselection to the CSG cell or the macro cell, bit resources can also be saved.
  • Yet another embodiment of the present invention provides, by way of example, a method of indicating a CSG cell. As shown in Figure 4, the method includes:
  • the terminal 110 in the connected mode sends a first message to the network side device 120, where the first message includes first indication information, where the first indication information is used to: indicate whether there is a CSG cell that allows the terminal 110 to access, and the indication
  • the first message does not carry the routing parameter information of the CSG cell, and the frequency point information and the scrambling code information indicating that the CSG cell is not carried in the first message.
  • the network side device 120 receives the first message, where the first message includes first indication information.
  • the descriptions of 410 and 420 can be referred to the descriptions in 310 and 320, respectively, and the repeated description is not made here.
  • the network side device 120 sends a second message to the terminal 110 according to the first indication information, where the second message includes indication information indicating whether the terminal reports a handover parameter used for performing CSG cell PS handover.
  • the indication information that the indication terminal 110 reports the handover parameter for performing the CSG cell PS handover is actually indicated at the same time.
  • Terminal 110 needs to perform packet switched PS handover.
  • the second message may be an existing message, such as a Packet Measurement Order (PMO) message, a packet cell change command message, or a system message, or may be another existing message, or may be a newly defined dedicated message.
  • PMO Packet Measurement Order
  • the second message may further include: indication information indicating a type of information reported by the terminal.
  • the information type reported by the terminal may include: at least one of frequency information of the CSG cell, scrambling code information of the CSG cell, routing parameter information of the CSG cell, and CSG identity of the CSG cell. 440.
  • the terminal 110 receives the second message.
  • the terminal 110 sends a third message to the network side device 120, when the second message includes the indication information indicating that the terminal is to report the handover parameter for performing the CSG cell PS handover.
  • the terminal 110 learns that the handover parameter for performing CSG cell PS handover needs to be reported to the network side device 120 according to the indication information indicating the handover parameter for the CSG cell PS handover in the second message, and correspondingly, the terminal 110 sends the third message. To the network side device 120.
  • the third message may include one of frequency point information of the target CSG cell to be handed over by the terminal 110, scrambling code information of the target CSG cell, routing parameter information of the target CSG cell, and a CSG identity of the CSG target cell.
  • the third message may be one of a packet measurement report message, a packet enhanced measurement report message, and a packet cell change notification message.
  • the terminal 110 may not send the third message to the network side device 120, that is, the terminal 110 does not execute 450.
  • the network side device 120 sends a PS handover command to the terminal 110, instructing the terminal 110 to perform PS handover, and handover to the target CSG cell.
  • the terminal in the connected mode sends a first message to the network side device to indicate whether there is a CSG cell that allows the terminal 110 to access, and indicates that the first message does not carry the routing parameter information of the CSG cell, and the indication A message does not carry the frequency information and the scrambling code information of the CSG cell, and can save unnecessary carrying in the first message sent to the network side device.
  • the frequency information of the CSG cell and the control message bit resource consumption required by the scrambling code information can implement the function of notifying the network-side candidate CSG cell with fewer bits, and saves the air interface resource compared to the frequency of the CSG cell and the scrambling code or the information of other CSG cells.
  • the time for setting the routing parameter information or the frequency point and the scrambling code information in the first message is further saved, and the terminal can notify the network side device more quickly whether there is a CSG cell that allows the terminal to access.
  • the network side device can also parse the first message more quickly to obtain the terminal.
  • the network side device implements the indication that the terminal performs PS handover according to the information further reported by the terminal.
  • the network side device 500 may implement all the functions of the network side device in the foregoing method embodiment by using software and/or hardware.
  • the network side device 500 may include one or more processors to implement the network in the foregoing method embodiment.
  • the network side device 500 includes: a receiving unit 502.
  • the receiving unit 504 is configured to receive a first message, where the first message includes first indication information, where the CSG cell includes at least one of a CSG cell in an E-UTRAN network and a CSG cell in a UTRAN network, where The first indication information is used to: indicate whether there is a CSG cell that allows the terminal to access; indicate that the first message does not carry the routing parameter information of the CSG cell; and, indicate that the first message does not carry the The frequency point information and the scrambling code information of the CSG cell are described.
  • the network side device 500 further includes a transmitting unit 504.
  • the sending unit 504 is configured to receive the first message correspondingly, and send the second message, where the second message includes indication information indicating whether the terminal performs packet switching PS handover.
  • the receiving unit 502 is further configured to: correspondingly send the second message, and receive the third message, where the third message includes frequency point information of the target CSG cell to be handed over by the terminal, scrambling code information of the target CSG cell, and route of the target C SG cell.
  • the third message includes frequency point information of the target CSG cell to be handed over by the terminal, scrambling code information of the target CSG cell, and route of the target C SG cell.
  • One of the parameter information and the C SG identity of the CSG target cell is further configured to: correspondingly send the second message, and receive the third message, where the third message includes frequency point information of the target CSG cell to be handed over by the terminal, scrambling code information of the target CSG cell, and route of the target C SG cell.
  • a terminal 600 is shown by way of example, and the terminal 600 can complete all the functions of the terminal in the foregoing method embodiment.
  • the terminal 600 can implement all the functions of the terminal in the foregoing method embodiment by using software and/or hardware.
  • terminal 600 may include one or more processors to implement all of the functions of the terminal in the above method embodiments.
  • the terminal 600 includes: a first transmitting unit 602 and an indication information generating unit 604.
  • the first sending unit 602 is configured to send a first message when the terminal is in a connected mode, where the first message includes first indication information, where the CSG cell includes a CSG cell in an E-UTRAN network and a UTRAN network. At least one of CSG cells.
  • the indication information generating unit 604 is configured to generate the first indication information, where the first indication information is used to: indicate whether there is a CSG cell that allows the terminal to access, and indicate that the CSG is not carried in the first message.
  • the routing parameter information of the cell and, indicating that the first message does not carry the frequency point information and the scrambling code information of the CSG cell.
  • the terminal 600 further includes: a first receiving unit 606.
  • the first receiving unit 606 is configured to receive the second message, where the second message includes indication information indicating whether the terminal reports a handover parameter used for performing CSG cell packet switching PS handover.
  • the first sending unit 602 is further configured to send a third message, where the third message includes frequency point information of a target CSG cell to be handed over by the terminal, scrambling code information of the target CSG cell, and the target CSG.
  • the third message includes frequency point information of a target CSG cell to be handed over by the terminal, scrambling code information of the target CSG cell, and the target CSG.
  • the terminal provided by the present invention can receive or transmit a wireless signal with a wireless communication device or a network.
  • the terminal can be a radio device, a cellular telephone device, a computing device, a personal communication system device, or any other device equipped with wireless communication.
  • the terminal can be a radio device, a cellular telephone device, a computing device, a personal communication system device, or any other device equipped with wireless communication.
  • a communication system including at least one terminal, and at least one corresponding to data communication with the one or more terminals Network side devices.
  • the communication system including at least one terminal, and at least one corresponding to data communication with the one or more terminals Network side devices.
  • the method in the embodiments of the present invention can be implemented in different manners.
  • the methods can be implemented by program instructions in hardware, software, or a combination of hardware and software.
  • the program instructions when executed, perform the methods in the embodiments of the present invention.
  • One or more processing modules in the embodiments of the present invention may be implemented in one or more circuit modules, which may be Application Specific Integrated Circuits (ASICs), digital signal processing.
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • Processing a controller, a microprocessor, a microcontroller, or other electronic device designed to perform the methods of the embodiments of the present invention.
  • the method in the embodiment of the present invention may be implemented by using one or more modules.
  • it may be implemented in a modular manner based on a process or a function.
  • These program instructions can be implemented on any computer or machine readable medium.
  • the readable medium can be any medium that can store program code, such as a memory, a ROM, a RAM, a magnetic disk, or an optical disk.
  • the memory can be located inside the processor or outside the processor.
  • memory refers to any type of long-term memory, short-term memory, erasable memory, non-erasable memory, or other types of memory.

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

Abstract

La présente invention concerne, par ses divers modes de réalisation, un procédé, un dispositif, et un système permettant d'indiquer une cellule de groupe fermé d'abonnés ou "CSG" (Closed Subscriber Group), ce qui implique un procédé pour indiquer la cellule CSG. Selon ce procédé, un terminal en mode connexion émet un premier message. Le premier message comporte une première information d'indication. La cellule CSG est au moins la cellule CSG du réseau E-UTRAN (Evolved Universal Terrestrial Radio Access Network) ou la cellule CSG du réseau UTRAN (Universal Terrestrial Radio Access Network). La première information d'indication est utilisée pour indiquer si la cellule CSG à laquelle le terminal est autorisé à accéder existe, pour indiquer que le premier message ne porte par l'information de paramètre d'acheminement de la cellule CSG, et pour indiquer que le premier message ne porte ni l'information de point de fréquence ni l'information de code d'embrouillage de la cellule CSG. Le terminal peut mettre en œuvre la fonction d'information du côté réseau au sujet de la candidate cellule CSG de destination en utilisant moins de bits. Par comparaison au compte rendu du point de fréquence et du code d'embrouillage de la cellule CSG ou d'autre information de la cellule CSG, la présente invention permet d'économiser des ressources d'interface hertzienne.
PCT/CN2010/080534 2009-12-31 2010-12-30 Procédé, dispositif, et système pour indiquer une cellule de groupe fermé d'abonnés (csg) Ceased WO2011079810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910238892.8A CN102118804B (zh) 2009-12-31 2009-12-31 指示csg小区的方法、装置和系统
CN200910238892.8 2009-12-31

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WO2011079810A1 true WO2011079810A1 (fr) 2011-07-07

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CN103139911B (zh) * 2011-11-25 2016-10-05 华为技术有限公司 实现载波聚合的方法、基站和用户设备
CN108809488A (zh) * 2017-05-04 2018-11-13 电信科学技术研究院 一种消息解码方法、发送端和接收端
CN112437455B (zh) * 2020-11-24 2022-08-30 展讯通信（上海）有限公司 小区参数的确定方法及设备
CN112929945B (zh) * 2021-02-03 2023-05-12 展讯半导体(南京)有限公司 一种网络接入方法、通信装置、芯片及模组设备

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CN101400071A (zh) * 2007-09-29 2009-04-01 北京三星通信技术研究有限公司 配置mme的方法
CN101400107A (zh) * 2007-09-27 2009-04-01 华为技术有限公司 一种完成用户添加的方法及设备
CN101572933A (zh) * 2008-04-29 2009-11-04 华为技术有限公司 一种用户设备对私有小区发起操作的方法、系统及装置

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WO2008112161A2 (fr) * 2007-03-08 2008-09-18 Interdigital Technology Corporation Equilibrage de charge de radiomessagerie et suivi des mises à jour de zone
CN101400107A (zh) * 2007-09-27 2009-04-01 华为技术有限公司 一种完成用户添加的方法及设备
CN101400071A (zh) * 2007-09-29 2009-04-01 北京三星通信技术研究有限公司 配置mme的方法
CN101572933A (zh) * 2008-04-29 2009-11-04 华为技术有限公司 一种用户设备对私有小区发起操作的方法、系统及装置

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CN102118804A (zh) 2011-07-06

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