WO2014019456A1 - 一种数据传输方法、装置、系统和相关设备 - Google Patents

一种数据传输方法、装置、系统和相关设备 Download PDF

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Publication number
WO2014019456A1
WO2014019456A1 PCT/CN2013/079661 CN2013079661W WO2014019456A1 WO 2014019456 A1 WO2014019456 A1 WO 2014019456A1 CN 2013079661 W CN2013079661 W CN 2013079661W WO 2014019456 A1 WO2014019456 A1 WO 2014019456A1
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WO
WIPO (PCT)
Prior art keywords
mtc terminal
base station
data
encryption algorithm
new
Prior art date
Application number
PCT/CN2013/079661
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English (en)
French (fr)
Inventor
江小威
杨宁
吴伟民
Original Assignee
中国移动通信集团公司
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 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Priority to EP13825863.7A priority Critical patent/EP2882208B1/en
Publication of WO2014019456A1 publication Critical patent/WO2014019456A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03Protecting confidentiality, e.g. by encryption
    • H04W12/037Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling traffic

Definitions

  • a data transmission method, a device, a system and related equipment The application is filed on July 30, 2012, the Chinese Patent Office, the application number is 201210266889.9, and the invention name is "a data transmission method, device, system and related equipment".
  • TECHNICAL FIELD The present application relates to the field of wireless communication technologies, and in particular, to a data transmission method, apparatus, system, and related device.
  • BACKGROUND OF THE INVENTION Machine-Type Communication refers to a communication method between a machine and a machine or a machine to machine (M2M) without requiring human participation. As shown in FIG.
  • each MTC terminal communicates with an MTC server through an operator network, and each MTC terminal can send uplink data to the MTC server or downlink sent by the MTC server. Data, in which data is transmitted between the MTC terminal and the MTC server through the base station.
  • the core network specification 3GPP 22.368 defines 16 important features of the MTC terminal, including low mobility, time control, delay tolerance, online small data transmission, etc., for different applications, including meter reading applications, remote control, etc. , may have a combination of one or several features.
  • the hotspots for MTC research focus on whether it is necessary to optimize the network for this type of communication, especially if the mass MTC terminal is applied to the actual network in the future, whether it will affect human to human.
  • M2M service one of the important services is that the MTC terminal collects data and uploads it.
  • smart meters, 7J meters, gas meters, etc. the characteristics of this type of service are: the amount of data collected is small, the sending time If the interval is fixed and the network is connected to the network at the same time, if the MTC terminals in the same cell access the network at the same time, the network will be congested.
  • the prior art proposes a data transmission method in an idle state.
  • the existing data transmission method in an idle state includes:
  • the base station does not indicate a fixed resource for data transmission in an idle state.
  • the MTC terminal transmits RRC (Radio Resource Control) to the base station in the third step of random access by means of random access.
  • RRC Radio Resource Control
  • the uplink data is sent when the connection request is sent, and the downlink data sent by the base station to the MTC terminal is carried in the fourth step of the random access, that is, the response message that the base station returns the RRC connection request.
  • the base station indicates a fixed resource for performing data transmission in an idle state.
  • the base station allocates a fixed resource for transmitting data in the idle state for the MTC terminal
  • data is transmitted using a fixed resource allocated by the base station for transmitting data in an idle state.
  • the MTC terminal and the base station need to negotiate and encrypt the data encryption key and the encryption algorithm in the connected state, and use it for transmission in an idle state. Data is encrypted/decrypted when data is transmitted.
  • the uplink data to be transmitted is used, and the cache encryption algorithm is used.
  • the key is encrypted and sent.
  • the base station receives the uplink data at this time and decrypts it by using the cache key. If the data is downlink, the base station temporarily encrypts and sends the encrypted encryption algorithm and key at the corresponding moment, and the MTC terminal is here.
  • the downlink data is received at all times and decrypted by the cached key.
  • An embodiment of the present application provides a data transmission method, including:
  • the new base station After the MTC terminal is in the idle state, the new base station receives the RRC connection request sent by the MTC terminal, where the connection request carries the terminal identifier and data encryption related information of the MTC terminal;
  • the new base station obtains a new encryption algorithm and a key corresponding to the MTC terminal according to the terminal identifier and the data encryption related information;
  • the downlink data sent to the MTC terminal is encrypted by using the obtained new encryption algorithm and key, and the uplink data sent by the MTC terminal is decrypted by using the obtained new encryption algorithm and key.
  • the new base station receives the random access initiated by the MTC terminal, and identifies the terminal identifier and the data encryption information in the received RRC connection request, so that the new base station can be based on the terminal identifier.
  • the data encryption information obtains a new encryption algorithm and a key corresponding to the MTC terminal, so that the new base station can encrypt the data to be transmitted by using the obtained new encryption algorithm and the key, and decrypt the received data, thereby realizing Data transmission with the MTC terminal.
  • the data encryption related information is an encryption algorithm input parameter
  • the new base station obtains a new encryption algorithm and a key corresponding to the MTC terminal according to the terminal identifier and the data encryption related information, and specifically includes:
  • the MTC terminal may send the encryption algorithm input parameter as the data encryption related information to the new base station, so that the new base station directly inputs the parameter by using the encryption algorithm. To update the original encryption algorithm.
  • the data encryption related information includes a cell global identifier ECGI of the camped cell before the MTC terminal moves;
  • the new base station obtains a new encryption algorithm and a key corresponding to the MTC terminal according to the terminal identifier and the data encryption related information, and specifically includes:
  • the obtained original encryption algorithm is updated by using the obtained encryption algorithm input parameter; and the updated encryption algorithm is determined to be a new encryption algorithm corresponding to the MTC terminal.
  • the original base station indicates the fixed resource of the data transmission in the idle state before the MTC terminal moves. Therefore, the MTC terminal can send the ECGI of the pre-mobile cell as the data encryption related information to the new base station, so that the new base station is from the corresponding cell. Obtain the original encryption algorithm, encryption algorithm input and key of the MTC terminal to update the encryption algorithm.
  • the new base station allocates the transmission resource used for transmitting data in the idle state to the MTC terminal; and indicates, by using the response message of the connection request, that the MTC terminal transmits the allocated transmission resource after entering the idle state. Uplink data; and after the MTC terminal enters an idle state, transmitting downlink data to the MTC terminal using the allocated transmission resource. Since the fixed transmission resource allocated by the original base station to the MTC terminal cannot be used after the MTC terminal moves, the new base station will re-allocate the fixed transmission resource for the MTC terminal, so as to transmit data between the MTC terminal and the new base station when the MTC terminal enters the idle state. When used.
  • the embodiment of the present application provides a data transmission apparatus, including:
  • a receiving unit configured to receive an RRC connection request sent by the MTC terminal after the MTC terminal is in an idle state, where the connection request carries the terminal identifier and data encryption related information of the MTC terminal; And obtaining, according to the terminal identifier and the data encryption related information received by the receiving unit, a new encryption algorithm and a key corresponding to the MTC terminal;
  • An encryption unit configured to perform a strong secret on the downlink data sent to the MTC terminal by using the obtained new encryption algorithm and a key;
  • a decryption unit configured to perform uplink data sent by the MTC terminal by using the obtained new encryption algorithm and a key Decrypt.
  • the new base station receives the random access initiated by the MTC terminal, and identifies the terminal identifier and the data encryption information in the received RRC connection request, so that the new base station can be based on the terminal identifier.
  • the data encryption information obtains a new encryption algorithm and a key corresponding to the MTC terminal, so that the new base station can encrypt the data to be transmitted by using the obtained new encryption algorithm and the key, and decrypt the received data, thereby realizing Data transmission between the MTC terminal and the base station.
  • the data encryption related information includes an encryption algorithm input parameter
  • the obtaining unit includes:
  • a first acquiring subunit configured to acquire an original encryption algorithm and a key corresponding to the MTC terminal according to the terminal identifier
  • a first update subunit configured to use the encryption algorithm to input an update parameter of the original encryption algorithm
  • a first determining subunit configured to determine that the updated encryption algorithm of the first update subunit is a new encryption corresponding to the MTC terminal algorithm.
  • the MTC terminal can send the encryption algorithm input parameter as the data encryption related information to the new base station, so that the new base station directly updates the input parameter with the encryption algorithm.
  • Original encryption algorithm
  • the data encryption related information includes a cell global identifier ECGI of the camped cell before the MTC terminal moves;
  • the obtaining unit includes:
  • a second acquiring subunit configured to acquire, according to the ECGI, an original encryption algorithm, an encryption algorithm input parameter, and a key corresponding to the terminal identifier from a corresponding cell;
  • a second update subunit configured to use the encryption algorithm to input an update parameter of the original encryption algorithm
  • a second determining subunit configured to determine that the updated encryption algorithm of the second update subunit is a new encryption corresponding to the MTC terminal algorithm.
  • the original base station indicates the fixed resource of the data transmission in the idle state before the MTC terminal moves. Therefore, the MTC terminal can send the ECGI of the pre-mobile cell as the data encryption related information to the new base station, so that the new base station is from the corresponding cell. Obtain the original encryption algorithm, encryption algorithm input and key of the MTC terminal to update the encryption algorithm.
  • it also includes:
  • a resource allocation unit configured to allocate, to the MTC terminal, a transmission resource used for transmitting data in an idle state
  • an indication unit configured to indicate, by using a response message of the connection request, that the MTC terminal enters an idle state, Using the allocated transmission resources for transmitting uplink data; 5 transmission unit for, after the MTC terminal enters an idle state, using the allocated transmission resources to the MTC data terminal transmits a downlink.
  • the new base station Since the fixed transmission resource allocated by the original base station to the MTC terminal cannot be used after the MTC terminal moves, the new base station will re-allocate the fixed transmission resource for the MTC terminal, so as to transmit data between the MTC terminal and the new base station when the MTC terminal enters the idle state. When used.
  • the embodiment of the present application provides a base station device, including the foregoing data transmission device.
  • the data transmission device may receive the random access initiated by the MTC terminal after the MTC terminal moves, and identify the terminal identifier and the data encryption information in the received RRC connection request, and obtain the information according to the terminal identifier and the data encryption information.
  • the new encryption algorithm and key corresponding to the MTC terminal so that the data transmission device can encrypt the data to be transmitted by using the obtained new encryption algorithm and key, and decrypt the received data, thereby realizing the cooperation with the MTC terminal.
  • Inter-data transmission for a base station device including the above-mentioned data transmission device, a new base station that can be camped on after MTC mobility also has the above functions.
  • An embodiment of the present application provides another data transmission method, including:
  • the RRC connection request is sent to the new base station, where the connection request carries the terminal identifier and the data encryption related information of the MTC terminal;
  • the MTC terminal encrypts the uplink data sent to the new base station by using the received encryption algorithm and the key, and decrypts the downlink data sent by the new base station by using the obtained encryption algorithm and the key.
  • the random access is initiated to the new base station, and the RRC connection request carries its own terminal identifier and data encryption information, and the new base station obtains the information according to the terminal identifier and the data encryption information.
  • the new encryption algorithm and key corresponding to the MTC terminal are sent to the MTC terminal, so that the MTC terminal can encrypt the data to be transmitted by using the received new encryption algorithm and key, and decrypt the received data, thereby realizing Data transmission between the MTC terminal and the base station.
  • it also includes:
  • An embodiment of the present application provides another data transmission apparatus, including:
  • a sending unit configured to send an RRC connection request to the new base station after the MTC terminal device where the device is located in the idle state, where the connection request carries the terminal identifier and the data encryption related information of the MTC terminal ;
  • a receiving unit configured to receive an encryption algorithm and a key sent by the new base station, where the encryption algorithm and a key are obtained by the new base station according to the terminal identifier and data encryption related information;
  • the encryption unit is configured to encrypt the uplink data sent to the new base station by using the received encryption algorithm and the key
  • the decryption unit is configured to decrypt the downlink data sent by the new base station by using the obtained encryption algorithm and the key.
  • the random access is initiated to the new base station, and the RRC connection request carries its own terminal identifier and data encryption information, so that the new base station can obtain the terminal identifier and the data encryption information.
  • the MTC terminal corresponds to a new encryption algorithm and a key; and for the MTC terminal, the base station notifies the MTC terminal of the new encryption algorithm and key obtained, so that the MTC terminal uses the received new encryption algorithm and the key pair needs to be transmitted.
  • the data is encrypted, and the received data is decrypted, thereby realizing data transmission between the MTC terminal and the base station.
  • the transmission unit further includes:
  • the receiving unit is further configured to receive, by the new base station, indication information of a transmission resource used for transmitting data after entering an idle state, where the indication information is indicated by a response message of the connection request by the new base station;
  • the transmitting unit is configured to: after the MTC terminal device enters an idle state, transmit the upload data by using the transmission resource indicated by the indication information.
  • the new base station Since the fixed transmission resource allocated by the original base station to the MTC terminal cannot be used after the MTC terminal moves, the new base station will re-allocate the fixed transmission resource for the MTC terminal, so as to transmit data between the MTC terminal and the new base station when the MTC terminal enters the idle state. When used.
  • the embodiment of the present application provides an MTC terminal device, including the foregoing data transmission device.
  • the data transmission device may initiate random access to the new base station after the MTC terminal moves, and carry the terminal identifier and the data encryption information in the sent RRC connection request, so that the new base station can obtain the terminal identifier and the data encryption information.
  • the new encryption algorithm and key corresponding to the MTC terminal so that the data transmission device can receive and encrypt the data to be transmitted by using the new encryption algorithm and key sent by the new base station, and decrypt the received data, thereby realizing
  • the data transmission with the new base station may also have the above functions for the MTC terminal device including the above data transmission device.
  • the embodiment of the present application provides a data transmission system, including a base station device and an MTC terminal device, where the base station device includes the first data transmission device, and the MTC terminal device includes the second data transmission device.
  • the base station apparatus including the first type of data transmission apparatus described above and the second type of data transmission apparatus including the above
  • the MTC terminal device performs the interaction, after the MTC terminal moves, the random access is initiated to the new base station, and the RRC connection request carries its own terminal identifier and data encryption information, so that the new base station can encrypt the information according to the terminal identifier and the data.
  • FIG. 1 is a schematic diagram of a communication scenario of an MTC terminal in the prior art
  • FIG. 2 is a schematic flowchart of an implementation process of a network side data transmission method according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a network side data transmission apparatus according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of an implementation process of a terminal side data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a terminal side data transmission apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
  • the embodiments of the present invention provide a data transmission method, apparatus, system, and related device, in order to implement data transmission between an MTC terminal and a new base station after the MTC terminal is in an idle state.
  • the following describes the flow of data transmission between the MTC terminal and the base station before moving.
  • the base station connected before the MTC terminal moves is referred to as a source base station, and the MTC terminal is moved.
  • the base station that is connected later is called a new base station.
  • the schematic diagram of the data transmission process between the MTC terminal and the source base station before the MTC terminal moves may include the following steps:
  • Step 1 When the MTC terminal is in the connected state, report the related information to the source base station;
  • the related information reported by the MTC terminal to the source base station may include its own mobility information and data transmission. Size, frequency and direction information, etc.;
  • Step 2 The source base station instructs the MTC terminal to use the transmission resource in the idle state (uplink/downlink) transmission, and the encryption algorithm and key information used when transmitting the data;
  • the MTC terminal may not be allocated the transmission resource that can be used for the data transmission in the idle state.
  • the data is transmitted to the source base station by using a random access method.
  • the source base station only needs to indicate the MTC terminal encryption algorithm and the key.
  • Step 3 After the MTC terminal enters the idle state, the source base station and the MTC terminal use the encryption algorithm and the key to encrypt the transmitted data.
  • the uplink data transmission is performed by using the transmission resource indicated by the source base station, and the source base station transmits the downlink data by using the allocated transmission resource; if the source base station does not indicate the transmission resource
  • the UE needs to send the uplink data, it initiates the random access, and carries the uplink data in the third step of the random access (that is, sends the RRC connection request to the source base station), of course, the uplink data needs to use the encryption delivered by the source base station.
  • the algorithm and the key are encrypted; the source base station carries the downlink data to be sent through the fourth step of the random access (that is, the response message that the source base station sends the RRC connection request to the MTC terminal), and of course, the downlink data also needs to use the same encryption algorithm and The key is encrypted.
  • an embodiment of the present invention provides a data transmission method.
  • a schematic flowchart of a network side implementation process of a data transmission method according to an embodiment of the present invention includes the following steps:
  • the RRC connection request carries the terminal identifier and the data encryption related information of the MTC terminal, and the terminal identifier may be an S-TMSI (Temporary User Identity).
  • the MTC terminal may initiate random access by using a paging method.
  • the MTC terminal After the MTC terminal initiates the random access, if the source new base station does not indicate the transmission resource used for the idle state data transmission, the MTC terminal is in the third step of the random access, that is, the data carried by the MTC terminal when transmitting the RRC connection request to the new base station.
  • the encryption related information may input parameters for the encryption algorithm, and the encryption algorithm input parameter may be used to update the data encryption algorithm when the next terminal enters the idle state, for example, may be a PDCP COUNT (Packet Data Convergence Protocol Count) value, a PDCP COUNT value and data. Transmit relevant, each time the base station and the MTC terminal send data (including uplink and downlink), PDCP COUNT boosts.
  • PDCP COUNT Packet Data Convergence Protocol Count
  • the MTC terminal sends the RRC to the new base station in the third step of the random access, that is, the MTC terminal
  • the data encryption related information carried in the connection request may be an ECGI (Cell Global Identifier) of the cell in which the MTC terminal moves before.
  • the new base station obtains a new encryption algorithm and a key corresponding to the MTC terminal according to the terminal identifier and the data encryption related information carried in the connection request.
  • the new base station If the connection request received by the new base station carries the terminal identifier and the encryption algorithm input parameter, the new base station requests the MME (Mobility Management Entity) the original encryption algorithm and the key of the MTC terminal according to the terminal identifier, and according to the encryption.
  • the original encryption algorithm obtained by the algorithm input parameter update determines that the updated encryption algorithm is a new encryption algorithm corresponding to the MTC terminal; if the connection request received by the new base station carries the terminal identifier and the ECGI of the camped cell before the MTC terminal, The new base station requests the cell identified by the ECGI to request the context of the MTC terminal corresponding to the terminal identifier (including packet size, data transmission direction, packet transmission interval, encryption algorithm used for data transmission, and key and encryption algorithm input parameters). And updating the obtained original encryption algorithm according to the encryption algorithm input parameter, and determining that the updated encryption algorithm is a new encryption algorithm corresponding to the MTC terminal.
  • MME Mobility Management Entity
  • the new base station needs to transmit downlink data to the MTC terminal, encrypt the downlink data to be transmitted by using the obtained new encryption algorithm and the key, and use the obtained new encryption algorithm after receiving the uplink data sent by the MTC terminal. And the key decrypts the received uplink data.
  • the new base station may also re-allocate the fixed transmission resource for the MTC terminal, where the fixed transmission resource is used for After the MTC terminal enters the idle state, it is used when transmitting data with the new base station.
  • the network side data transmission method provided by the embodiment of the present invention may further include the following steps:
  • Step 1 The new base station allocates the transmission resource used for transmitting data in the idle state to the MTC terminal.
  • Step 2 The new base station indicates, by using the response message of the RRC connection request, that the MTC terminal transmits the uplink data by using the allocated transmission resource after entering the idle state. ;
  • Step 3 After the MTC terminal enters the idle state, the downlink data is transmitted to the MTC terminal by using the allocated transmission resource.
  • step S202 may be performed after step S202, before step S203, or after step S203.
  • the MTC terminal when the MTC terminal does not re-allocate the fixed transmission resource to the MTC terminal after the MTC terminal moves, when the MTC terminal needs to transmit the uplink data, the MTC terminal may initiate the random access, and carry the required transmission in the third step of the random access.
  • the uplink data, and the base station can carry the downlink data to be transmitted in the fourth step of the random access.
  • the uplink data and the downlink data transmitted between the MTC terminal and the base station need to be encrypted.
  • the MTC terminal when the new base station needs to transmit downlink data to the MTC terminal after the MTC terminal moves, the MTC terminal initiates random access by paging, and the MTC terminal carries the terminal identifier and data in the third step of the random access. Encrypting related information, so that the base station can obtain the MTC terminal corresponding according to the information The new encryption algorithm and the key, and use the obtained encryption algorithm and key to encrypt the downlink data to be transmitted and decrypt the received uplink data, thereby realizing the movement between the base station and the MTC terminal after the MTC terminal moves. data transmission.
  • the second embodiment is based on the same inventive concept as the first embodiment, and provides a data transmission device. Since the principle of the device and the problem solving is similar to the data transmission method, the implementation of the device can be referred to the implementation of the method. No longer.
  • a schematic structural diagram of a network-side data transmission apparatus includes: a receiving unit 301, configured to receive an RRC connection sent by the MTC terminal after the MTC terminal in an idle state moves.
  • the request, the connection request carries the terminal identifier and data encryption related information of the MTC terminal;
  • the obtaining unit 302 is configured to obtain, according to the terminal identifier and the data encryption related information received by the receiving unit 301, a new encryption algorithm and a key corresponding to the MTC terminal;
  • the encryption unit 303 is configured to encrypt the downlink data sent to the MTC terminal by using the new encryption algorithm and the key obtained by the obtaining unit 302.
  • the decrypting unit 304 is configured to decrypt the uplink data sent by the MTC terminal by using the new encryption algorithm and the key obtained by the obtaining unit 302.
  • the obtaining unit 302 may include:
  • a first obtaining subunit configured to acquire an original encryption algorithm and a key corresponding to the MTC terminal according to the terminal identifier
  • a first update subunit configured to update the obtained original encryption algorithm according to the encryption algorithm input parameter; the first determining subunit, configured to determine that the updated encryption algorithm of the first update subunit is a new encryption algorithm corresponding to the MTC terminal.
  • the obtaining unit 302 may include:
  • a second acquiring sub-unit configured to acquire an original encryption algorithm, an encryption algorithm input parameter, and a key corresponding to the terminal identifier from the corresponding cell according to the ECGI;
  • a second update subunit configured to update the obtained original encryption algorithm according to the encryption algorithm input parameter; and a second determining subunit, configured to determine that the updated encryption algorithm of the second update subunit is a new encryption algorithm corresponding to the MTC terminal.
  • the network side data transmission device may further include: a resource allocation unit, configured to allocate, by the MTC terminal, a transmission resource used for transmitting data in an idle state; the indication unit, configured to indicate, by using a response message of the RRC connection request, that the MTC terminal transmits the uplink by using the allocated transmission resource after entering the idle state data;
  • a transmission unit configured to: after the MTC terminal enters an idle state, transmit downlink data to the MTC terminal by using the allocated transmission resource.
  • the network side data transmission device may be disposed in the base station device.
  • an embodiment of the present invention further provides an MTC terminal side data transmission method, device, MTC terminal device, and data transmission system, and the method, the device, the device, and the system solve the problem, and the network side data transmission method
  • MTC terminal side data transmission method for the implementation of the foregoing methods, devices, devices, and systems, reference may be made to the implementation of the network side data transmission method, and the repeated description is omitted.
  • FIG. 4 it is a schematic flowchart of an implementation process of an MTC terminal side data transmission method according to an embodiment of the present invention, which includes the following steps:
  • the random access is initiated, and in the third step of the random access, that is, the RRC connection request sent by the MTC terminal to the base station is carried. Its own terminal identification and data encryption related information.
  • the MTC terminal can also be sent in the third step of random access.
  • the MTC terminal receives an encryption algorithm and a key sent by the new base station.
  • the encryption algorithm and the key are obtained by the new base station according to the terminal identifier and the data encryption related information sent by the MTC terminal;
  • the MTC terminal encrypts the uplink data sent to the new base station by using the received encryption algorithm and the key, and decrypts the downlink data sent by the new base station by using the obtained encryption algorithm and the key.
  • the MTC terminal side data transmission method may further include the following steps:
  • Step 1 The MTC terminal receives the indication information of the transmission resource used by the new base station to transmit data after entering the idle state, where
  • the indication information is indicated by the fourth step of the random access by the new base station, that is, when the response message of the RRC connection request is fed back to the MTC terminal;
  • Step 2 After entering the idle state, the MTC terminal transmits the upload data by using the transmission resource indicated by the indication information.
  • the MTC terminal may initiate the random access and carry the RRC connection request to the new base station to carry its own terminal identifier and data in the third step of the random access.
  • Encrypting the relevant information after the new base station obtains the encryption algorithm and the key corresponding to the MTC terminal according to the received terminal identifier and the data encryption related information, indicating the encryption algorithm and the key used by the MTC terminal to transmit the data, and the MTC terminal according to the new
  • the indication of the base station encrypts the uplink data sent to the new base station by using the received encryption algorithm and the key, and decrypts the downlink data sent by the new base station by using the received encryption algorithm and the key.
  • FIG. 5 it is a schematic structural diagram of an MTC terminal side data transmission apparatus according to an embodiment of the present invention, including:
  • the sending unit 501 is configured to send an RRC connection request to the new base station after the MTC terminal device where the device is located in the idle state is moved;
  • connection request carries the terminal identifier and the data encryption related information of the MTC terminal, and the receiving unit 502 is configured to receive the encryption algorithm and the key sent by the new base station;
  • the encryption algorithm and the key are obtained by the new base station according to the terminal identifier of the MTC terminal and the data encryption related information;
  • the encryption unit 503 is configured to perform, by using the received encryption algorithm and the key, the uplink data sent to the new base station;
  • the decrypting unit 504 is configured to decrypt the downlink data sent by the new base station by using the received encryption algorithm and the key.
  • the network side data transmission device may further include a transmission unit, where:
  • the receiving unit 502 is further configured to receive indication information of the transmission resource used by the new base station to transmit data after entering the idle state;
  • the indication information may be indicated by a response message that the new base station requests through the RRC connection;
  • the transmission unit is configured to transmit the upload data by using the transmission resource indicated by the indication information after the MTC terminal device enters the idle state.
  • the MTC terminal side data transmission device may be disposed in the MTC terminal device.
  • a schematic structural diagram of a data transmission system includes a base station device 601 and an MTC terminal device 602.
  • the base station device 601 may include the network side data transmission device according to the second embodiment, MTC.
  • the terminal device 602 may include the MTC terminal side data transmission device described in Embodiment 4.
  • the MTC terminal involved in the embodiment of the present invention may be an MTC terminal.
  • a data transmission method, apparatus, system and related device provided by an embodiment of the present invention, when an MTC terminal occurs After the mobile station, the random access is initiated to the new base station, and the RRC connection request carries its own terminal identifier and data encryption information, so that the new base station can obtain the new encryption algorithm and key corresponding to the MTC terminal according to the terminal identifier and the data encryption information.
  • the new base station can encrypt the data to be transmitted by using the obtained new encryption algorithm and key, and decrypt the received data; and for the MTC terminal, the base station obtains the response message through the RRC connection request.
  • the new encryption algorithm and the key notify the MTC terminal, so that the MTC terminal encrypts the data to be transmitted by using the received new encryption algorithm and key, and decrypts the received data, thereby realizing the connection between the MTC terminal and the base station. Data transfer.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种数据传输方法、装置、系统和相关设备,用以在空闲态下的MTC终端设备发生移动之后,实现MTC终端设备与基站之间的数据传输,其中,数据传输方法,包括:在处于空闲态下的MTC终端发生移动后,新基站接收所述MTC终端发送的RRC连接请求,所述连接请求中携带有所述MTC终端的终端标识和数据加密相关信息;所述新基站根据所述终端标识和数据加密相关信息,获得所述MTC终端对应的新加密算法及密钥;并利用获得的新加密算法及密钥对发送给所述MTC终端的下行数据进行加密,以及利用获得的新加密算法及密钥对所述MTC终端发送的上行数据进行解密。

Description

一种数据传输方法、 1装置、 系统和相关设备 本申请要求在 2012年 7月 30日提交中国专利局、 申请号为 201210266889.9、 发明名 称为"一种数据传输方法、 装置、 系统和相关设备"的中国专利申请的优先权, 其全部内容 通过引用结合在本申请中。 技术领域 本申请涉及无线通信技术领域, 尤其涉及一种数据传输方法、装置、 系统和相关设备。 背景技术 机器类型通信 ( MTC, Machine-Type Communication )指的是机器与机器或者设备与 设备(M2M, Machine to Machine )之间的通信, 而不需要人参与的一种通信方式。 如图 1 所示, 为现有技术中 MTC终端通信场景示意图, 各 MTC终端通过运营商网络和 MTC服 务器进行通信, 各 MTC终端既可以向 MTC服务器发送上行数据, 也可以接收 MTC服务 器发送的下行数据, 其中 MTC终端和 MTC服务器之间通过基站来传输数据。
随着 M2M业务的迅猛发展, MTC终端规模将井喷式增长, 同一小区内 MTC终端数 目可能达数万个。 核心网规范 3GPP 22.368定义了 MTC终端的 16种重要特征, 包括低移 动性, 时间控制型、 时延容忍型, 在线小数据传输型等, 针对不同的应用, 包括抄表类应 用、 远程控制等, 可能具有 1个或者几个特点的组合。
目前,针对 MTC研究的热点主要集中是否有必要对该类型通信进行网络方面的优化, 特别是将来海量 MTC终端应用到实际网络中时, 是否会对人与人 ( Human to Human )造 成影响。 对于 M2M业务来说, 其中一个重要业务是 MTC终端釆集数据并上 4艮, 例如, 智 能电表、 7J表、 煤气表等, 该类业务具有的特点是, 釆集的数据量小, 发送时间间隔固定, 同时接入网络, 若同一小区内的 MTC终端同时接入网络, 将导致网络拥塞。
为了解决上述问题, 现有技术提出了空闲态下数据传输方法, 目前, 已有的空闲态下 数据传输方法, 包括:
( 1 )基站不指示空闲态下用于进行数据传输的固定资源, 这种情况下, MTC终端通 过随机接入的方式, 在随机接入的第三步, 即向基站发送 RRC (无线资源控制)连接请求 时发送上行数据,而基站向 MTC终端发送的下行数据在随机接入第四步,即基站返回 RRC 连接请求的响应消息中携带。
( 2 )基站指示空闲态下用于进行数据传输的固定资源, 这种情况下, 在 MTC终端处 于连接态时,基站为 MTC终端分配用于在空闲态传输数据的固定资源, 当 MTC终端处于 空闲态时, 利用基站分配的、 用于在空闲态传输数据的固定资源传输数据。 同时, 在上述两种空闲态下数据传输方法中, 为了保证数据传输的安全性, MTC终端 与基站需要在连接态时协商数据加密密钥及加密算法并进行緩存, 用于在空闲态下传输数 据时对所传输的数据进行加密 /解密, 在空闲态下进行数据传输时, 如果是上行数据, 在每 次有基站分配的时频资源时刻对需发送的上行数据, 利用緩存的加密算法及密钥进行加密 并发送, 基站在此时刻接收上行数据并通过緩存密钥进行解密; 若是下行数据, 则基站在 相应时刻来临时利用緩存的加密算法及密钥进行加密并发送, MTC终端在此时刻接收下行 数据并通过緩存的密钥进行解密。
但是, 若 MTC终端发生移动时, 对于第 ( 1 )种方法来说, MTC终端移动到新小区 时与新基站之间传输的数据如何加密, 以及对于第 (2 )种方法来说, MTC终端移动到新 小区之后, 与源基站之间协商的加密密钥和加密算法将无法使用, 从而, 在 MTC终端发 生移动之后, MTC终端与基站之间如何进行数据传输,成为现有技术亟待解决的技术问题 之一。 发明内容 本申请实施例提供一种数据传输方法、 装置、 系统及相关设备, 用以在在空闲态下的
MTC终端发生移动之后 , 实现 MTC终端与基站之间的数据传输。
本申请实施例提供一种数据传输方法, 包括:
在 MTC终端处于空闲态下发生移动后, 新基站接收所述 MTC终端发送的 RRC连接 请求, 所述连接请求中携带有所述 MTC终端的终端标识和数据加密相关信息;
所述新基站根据所述终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加 密算法及密钥; 并
利用获得的新加密算法及密钥对发送给所述 MTC终端的下行数据进行加密, 以及利 用获得的新加密算法及密钥对所述 MTC终端发送的上行数据进行解密。
从上述方法可以看出, 当 MTC终端发生移动之后,新基站接收 MTC终端发起的随机 接入, 并在接收到的 RRC 连接请求中识别出终端标识和数据加密信息, 使得新基站能够 根据终端标识和数据加密信息获得该 MTC终端对应的新加密算法和密钥, 这样, 新基站 可以使用获得的新加密算法和密钥对需要传输的数据进行加密, 并对接收到的数据进行解 密, 从而实现了与 MTC终端之间的数据传输。
较优地, 若源基站在所述 MTC终端移动之前未指示空闲态下数据传输的固定资源, 所述数据加密相关信息为加密算法输入参数; 以及
所述新基站根据所述终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加 密算法及密钥, 具体包括:
所述新基站根据所述终端标识获取所述 MTC终端对应的原加密算法及密钥; 利用所述加密算法输入参数更新获取 原加密算法; 确定更新后的加密算法为所述 MTC终端对应的新加密算法。
由于原基站在 MTC终端移动前未指示空闲态下数据传输的固定资源, 因此, MTC终 端可以将加密算法输入参数作为数据加密相关信息发送给新基站, 使新基站直接用所述加 密算法输入参数来更新原加密算法。
较优地, 若源基站在所述 MTC终端移动之前指示了空闲态下数据传输的固定资源, 所述数据加密相关信息包括所述 MTC终端移动之前驻留小区的小区全局标识符 ECGI; 以 及
所述新基站根据所述终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加 密算法及密钥, 具体包括:
所述新基站根据所述 ECGI从对应的小区获取所述终端标识对应的原加密算法、 加密 算法输入参数以及密钥; 并
利用获取的加密算法输入参数更新获取的原加密算法; 确定更新后的加密算法为所述 MTC终端对应的新加密算法。
由于原基站在 MTC终端移动前指示了空闲态下数据传输的固定资源, 因此, MTC终 端可以将加移动前驻留小区的 ECGI作为数据加密相关信息发送给新基站, 使得新基站从 对应的小区获取该 MTC终端的原加密算法、 加密算法输入和密钥来更新加密算法。
较优地, 所述新基站为所述 MTC终端分配空闲态下传输数据所用的传输资源; 并 通过所述连接请求的响应消息指示所述 MTC终端在进入空闲态后, 使用分配的传输 资源传输上行数据; 以及 在所述 MTC终端进入空闲态后,使用分配的传输资源向所述 MTC终端传输下行数据。 由于 MTC终端移动后, 原基站为 MTC终端分配的固定传输资源也无法使用, 因此, 新基站将为 MTC终端重新分配固定传输资源, 以便于 MTC终端进入空闲态时, 与新基站 之间传输数据时使用。
本申请实施例提供一种数据传输装置, 包括:
接收单元, 用于在 MTC终端处于空闲态下发生移动后, 接收所述 MTC终端发送的 RRC连接请求, 所述连接请求中携带有所述 MTC终端的终端标识和数据加密相关信息; 获得单元, 用于根据所述接收单元接收的终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加密算法及密钥;
加密单元, 用于利用获得的新加密算法及密钥对发送给所述 MTC终端的下行数据进 行力口密;
解密单元, 用于利用获得的新加密算法及密钥对所述 MTC终端发送的上行数据进行 解密。
从上述装置可以看出, 当 MTC终端发生移动之后,新基站接收 MTC终端发起的随机 接入, 并在接收到的 RRC 连接请求中识别出终端标识和数据加密信息, 使得新基站能够 根据终端标识和数据加密信息获得该 MTC终端对应的新加密算法和密钥, 这样, 新基站 可以使用获得的新加密算法和密钥对需要传输的数据进行加密, 并对接收到的数据进行解 密, 从而实现了 MTC终端与基站之间的数据传输。
较优地, 若源基站在所述 MTC终端移动之前未指示空闲态下数据传输的固定资源, 所述数据加密相关信息包括加密算法输入参数; 以及
所述获得单元, 包括:
第一获取子单元, 用于根据所述终端标识获取所述 MTC终端对应的原加密算法及密 钥;
第一更新子单元, 用于利用所述加密算法输入参数更新获取的原加密算法; 第一确定子单元, 用于确定第一更新子单元更新后的加密算法为所述 MTC终端对应 的新加密算法。
由于原基站在 MTC终端移动前未指示空闲态下数据传输的固定资源, 因此, MTC终 端可以将加密算法输入参数作为数据加密相关信息发送给新基站, 使新基站直接用加密算 法输入参数来更新原加密算法。
较优地, 若源基站在所述 MTC终端移动之前指示了空闲态下数据传输的固定资源, 所述数据加密相关信息包括所述 MTC终端移动之前驻留小区的小区全局标识符 ECGI; 以 及
所述获得单元, 包括:
第二获取子单元, 用于根据所述 ECGI从对应的小区获取所述终端标识对应的原加密 算法、 加密算法输入参数以及密钥;
第二更新子单元, 用于利用所述加密算法输入参数更新获取的原加密算法; 第二确定子单元, 用于确定第二更新子单元更新后的加密算法为所述 MTC终端对应 的新加密算法。
由于原基站在 MTC终端移动前指示了空闲态下数据传输的固定资源, 因此, MTC终 端可以将加移动前驻留小区的 ECGI作为数据加密相关信息发送给新基站, 使得新基站从 对应的小区获取该 MTC终端的原加密算法、 加密算法输入和密钥来更新加密算法。
较优地, 还包括:
资源分配单元, 用于为所述 MTC终端分配空闲态下传输数据所用的传输资源; 指示单元, 用于通过所述连接请求的响应消息指示所述 MTC终端在进入空闲态后, 使用分配的传输资源传输上行数据; 5 传输单元, 用于在所述 MTC终端进入空闲态后,使用分配的传输资源向所述 MTC终 端传输下行数据。
由于 MTC终端移动后, 原基站为 MTC终端分配的固定传输资源也无法使用, 因此, 新基站将为 MTC终端重新分配固定传输资源, 以便于 MTC终端进入空闲态时, 与新基站 之间传输数据时使用。
本申请实施例提供一种基站设备 , 包括上述数据传输装置。
由于上述数据传输装置可以在 MTC终端发生移动之后,接收 MTC终端发起的随机接 入, 并在接收到的 RRC 连接请求中识别出终端标识和数据加密信息, 能够根据终端标识 和数据加密信息获得该 MTC终端对应的新加密算法和密钥, 这样, 数据传输装置可以使 用获得的新加密算法和密钥对需要传输的数据进行加密, 并对接收到的数据进行解密, 从 而实现了与 MTC终端之间的数据传输, 对于包括上述数据传输装置的基站设备, 可作为 MTC移动后驻留的新基站也具有上述功能。
本申请实施例提供另外一种数据传输方法, 包括:
在处于空闲态下的 MTC终端发生移动后, 向新基站发送 RRC连接请求, 所述连接请 求中携带有所述 MTC终端的终端标识和数据加密相关信息;
所述 MTC终端接收所述新基站发送的加密算法及密钥, 所述加密算法及密钥为所述 新基站根据所述终端标识和数据加密相关信息获得的;
所述 MTC终端利用接收到的加密算法和密钥对发送给新基站的上行数据进行加密, 以及利用获得的加密算法及密钥对新基站发送的下行数据进行解密。
从上述方法可以看出, 当 MTC终端发生移动之后, 通过向新基站发起随机接入, 并 在 RRC 连接请求携带自身的终端标识和数据加密信息, 在新基站根据终端标识和数据加 密信息获得该 MTC终端对应的新加密算法和密钥后发送给 MTC终端, 这样, MTC终端 可以使用接收到的新加密算法和密钥对需要传输的数据进行加密, 并对接收到的数据进行 解密, 从而实现了 MTC终端与基站之间的数据传输。
较优地, 还包括:
所述 MTC终端接收所述新基站发送的、 进入空闲态后传输数据所用的传输资源的指 示信息, 所述指示信息为所述新基站通过所述连接请求的响应消息指示的; 以及 在进入空闲态后, 使用所述指示信息所指示的传输资源传输上传数据。
由于 MTC终端移动后, 原基站为 MTC终端分配的固定传输资源也无法使用, 因此, 新基站将为 MTC终端重新分配固定传输资源, 以便于 MTC终端进入空闲态时, 与新基站 之间传输数据时使用。 本申请实施例提供另外一种数据传输装置, 包括:
发送单元, 用于在处于空闲态下的、 本装置所在的 MTC终端设备发生移动之后, 向 新基站发送 RRC连接请求, 所述连接请求中携带有所述 MTC终端的终端标识和数据加密 相关信息;
接收单元, 用于接收所述新基站发送的加密算法及密钥, 所述加密算法及密钥为所述 新基站根据所述终端标识和数据加密相关信息获得的;
加密单元, 用于利用接收到的加密算法和密钥对发送给新基站的上行数据进行加密; 解密单元, 用于利用获得的加密算法及密钥对新基站发送的下行数据进行解密。
从上述装置可以看出, 当 MTC终端发生移动之后, 通过向新基站发起随机接入, 并 在 RRC 连接请求携带自身的终端标识和数据加密信息, 使得新基站能够根据终端标识和 数据加密信息获得该 MTC终端对应的新加密算法和密钥; 而对于 MTC终端来说,基站将 获得的新加密算法和密钥通知 MTC终端, 这样, MTC终端使用接收到的新加密算法和密 钥对需要传输的数据进行加密, 并对接收到的数据进行解密, 从而实现了 MTC终端与基 站之间的数据传输。
较优地, 还包括传输单元, 其中:
所述接收单元, 还用于接收所述新基站发送的、 进入空闲态后传输数据所用的传输资 源的指示信息, 所述指示信息为所述新基站通过所述连接请求的响应消息指示的; 所述传输单元, 用于在所述 MTC终端设备进入空闲态后, 使用所述指示信息所指示 的传输资源传输上传数据。
由于 MTC终端移动后, 原基站为 MTC终端分配的固定传输资源也无法使用, 因此, 新基站将为 MTC终端重新分配固定传输资源, 以便于 MTC终端进入空闲态时, 与新基站 之间传输数据时使用。
本申请实施例提供一种 MTC终端设备, 包括上述数据传输装置。
由于上述数据传输装置可以在 MTC终端发生移动之后, 向新基站发起随机接入, 并 在发送的 RRC 连接请求中携带终端标识和数据加密信息, 使得新基站能够根据终端标识 和数据加密信息获得该 MTC终端对应的新加密算法和密钥, 这样, 数据传输装置可以接 收并使用新基站发送的新加密算法和密钥对需要传输的数据进行加密, 并对接收到的数据 进行解密, 从而实现了与新基站之间的数据传输, 对于包括上述数据传输装置的 MTC终 端设备, 也可具有上述功能。
本申请实施例提供一种数据传输系统, 包括基站设备和 MTC终端设备, 其中所述基 站设备包括上述第一种数据传输装置,所述 MTC终端设备包括上述第二种数据传输装置。
由于包括上述第一种数据传输装置的基站设备和包括上述第二种数据传输装置的 MTC终端设备在进行交互时, 当 MTC终端发生移动之后, 通过向新基站发起随机接入, 并在 RRC 连接请求携带自身的终端标识和数据加密信息, 使得新基站能够根据终端标识 和数据加密信息获得该 MTC终端对应的新加密算法和密钥, 这样, 新基站可以使用获得 的新加密算法和密钥对需要传输的数据进行加密, 并对接收到的数据进行解密; 而对于 MTC终端来说, 接收并使用新基站发送的新加密算法和密钥对需要传输的数据进行加密, 并对接收到的数据进行解密, 从而实现了 MTC终端与基站之间的数据传输。
本申请的其它特征和优点将在随后的说明书中阐述, 并且, 部分地从说明书中变得显 而易见, 或者通过实施本发明而了解。 本发明的目的和其他优点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实现和获得。 附图说明 为了更清楚地说明本申请实施例或现有技术中的技术方案, 下面将对实施例或现 有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图仅仅 是本申请的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前 提下, 还可以根据这些附图获得其他的附图。
图 1为现有技术中, MTC终端通信场景示意图;
图 2为本发明实施例中, 网络侧数据传输方法的实施流程示意图;
图 3为本发明实施例中 网络侧数据传输装置的结构示意图;
图 4为本发明实施例中 终端侧数据传输方法的实施流程示意图;
图 5为本发明实施例中 终端侧数据传输装置的结构示意图;
图 6为本发明实施例中 数据传输系统的结构示意图。 具体实施方式 为了在处于空闲态下的 MTC终端发生移动后, 实现 MTC终端与新基站之间的数 据传输, 本发明实施例提供一种数据传输方法、 装置、 系统及相关设备。
为了更好地理解本发明实施例, 以下对 MTC 终端发生移动之前与基站之间进行 数据传输的流程进行说明, 为了便于描述, 将 MTC 终端移动之前连接的基站称为源 基站, 将 MTC终端移动之后连接的基站称为新基站。
具体的, MTC终端移动之前与源基站之间数据传输流程示意图, 可以包括以下步 骤:
步骤一、 MTC终端在连接态时, 向源基站汇报自身的相关信息;
其中, MTC终端向源基站汇报的相关信息可以包括自身的移动性信息、 数据发送 的大小、 频率和方向信息等;
步骤二、 源基站指示 MTC终端用于空闲态下数据 (上行 /下行)传输可使用的传 输资源、 以及传输数据时所使用的加密算法和密钥信息;
具体实施时,若源基站出于 MTC终端移动性及数据发送频率考虑,可以不为 MTC 终端分配空闲态下数据传输可使用的传输资源, 当在空闲态下, MTC终端需要传输数 据时, 可以通过随机接入方式, 向源基站传输数据, 这种情况, 步骤 S 102中, 源基站 只需要指示 MTC终端加密算法和密钥即可。
步骤三、 MTC终端进入空闲态之后, 源基站与 MTC终端之间使用该加密算法和 密钥对所传输的数据进行加密。
其中, 如果源基站指示了空闲态下数据传输的可用传输资源, 则使用源基站指示 的传输资源进行上行数据传输, 同时, 源基站使用分配的传输资源传输下行数据; 如 果源基站未指示传输资源, 当 UE需要发送上行数据时, 通过发起随机接入, 并在随 机接入的第三步(即向源基站发送 RRC连接请求)携带上行数据, 当然该上行数据需 要使用源基站下发的加密算法及密钥进行加密; 源基站通过随机接入第四步 (即源基 站向 MTC终端发送 RRC连接请求的响应消息)携带需要发送的下行数据, 当然该下 行数据也需要使用同样的加密算法和密钥进行加密。
当 MTC 终端移动至新的小区之后, 由于源基站指示的加密算法及密钥将无法使 用, 从而导致新基站与 MTC 终端之间无法传输数据。 为了解决该问题, 本发明实施 例提供一种数据传输方法, 如图 2所示, 为本发明实施例提供的数据传输方法网络侧 实施流程示意图, 包括以下步骤:
S201、 在处于空闲态下的 MTC终端发生移动后, 新基站接收该 MTC终端发送的 RRC连接请求;
其中, 在 RRC连接请求中携带有该 MTC终端的终端标识和数据加密相关信息, 该终端标识可以为 S-TMSI (临时用户标识), 具体实施时, 当 MTC终端移动到新小 区之后, 如果新基站需要向 MTC终端传输下行数据时, 可以通过寻呼的方法让 MTC 终端发起随机接入。
当 MTC 终端发起随机接入之后, 如果源新基站未指示空闲态数据传输所使用的 传输资源, MTC终端在随机接入的第三步, 即 MTC终端向新基站发送 RRC连接请求 时携带的数据加密相关信息可以为加密算法输入参数, 该加密算法输入参数可以用于 更新下一次终端进入空闲态时数据加密算法, 例如, 可以为 PDCP COUNT (分组数据 汇聚协议计数)值, PDCP COUNT值与数据发送相关, 基站与 MTC终端之间每发送 一次数据(包括上行和下行), PDCP COUNT增力。 1 ; 如果源基站指示过空闲态数据传 输所使用的传输资源, MTC终端在随机接入的第三步,即 MTC终端向新基站发送 RRC 连接请求时携带的数据加密相关信息可以为 MTC终端移动之前驻留小区的 ECGI (小 区全局标识符)。
5202、 新基站根据连接请求中携带的终端标识和数据加密相关信息, 获得该 MTC 终端对应的新加密算法及密钥;
其中, 若新基站接收到的连接请求中携带有终端标识和加密算法输入参数时, 新 基站根据终端标识向 MME (移动性管理实体)请求该 MTC终端的原加密算法及密钥, 并根据加密算法输入参数更新获取的原加密算法, 确定更新后的加密算法为该 MTC 终端对应的新加密算法; 若新基站接收到的连接请求中携带有终端标识和 MTC 终端 之前驻留小区的 ECGI时,新基站向标识为该 ECGI的小区索要该终端标识对应的 MTC 终端的上下文 (包括数据包大小、 数据传输方向、 数据包发送间隔、 数据传输所使用 的加密算法及密钥和加密算法输入参数),并根据加密算法输入参数更新获取的原加密 算法, 并确定更新后的加密算法为该 MTC终端对应的新加密算法。
5203、 当新基站需要向 MTC 终端传输下行数据时, 利用获得的新加密算法及密 钥对需要传输的下行数据进行加密, 以及在接收到 MTC 终端发送的上行数据之后, 利用获得的新加密算法及密钥对接收到的上行数据解密。
具体实施时, 由于在 MTC终端移动之后, 源基站为该 MTC终端分配的固定传输 资源也将无法使用, 因此, 新基站还可以为该 MTC 终端重新分配固定传输资源, 该 固定传输资源用于在该 MTC 终端进入空闲态后, 与新基站之间传输数据时使用。 基 于此, 本发明实施例提供的网络侧数据传输方法, 还可以包括以下步骤:
步骤一、 新基站为该 MTC终端分配空闲态下传输数据所用的传输资源; 步骤二、新基站通过 RRC连接请求的响应消息指示该 MTC终端在进入空闲态后, 使用分配的传输资源传输上行数据;
步骤三、 在 MTC终端进入空闲态后, 使用分配的传输资源向该 MTC终端传输下 行数据。
需要说明的时, 上述三个步骤可以在步骤 S202之后, 先于步骤 S203执行, 也可 以在步骤 S203之后执行。
具体实施时, 当 MTC终端移动之后, 新基站未为 MTC终端重新分配固定传输资 源时, 当 MTC 终端需要传输上行数据时, 可以通过发起随机接入, 在随机接入的第 三步携带需要传输的上行数据, 而基站可以在随机接入第四步携带需要传输的下行数 据, 当然, MTC终端与基站之间传输的上行数据和下行数据均需要加密。
由于上述过程中, 当 MTC终端发生移动之后, 新基站需要向 MTC终端传输下行 数据时, 通过寻呼让 MTC终端发起随机接入, MTC终端通过在随机接入的第三步携 带终端标识和数据加密相关信息, 使得基站能够根据这些信息获得该 MTC 终端对应 的新加密算法和密钥, 并利用获得的加密算法和密钥对需要传输的下行数据加密并对 接收到的上行数据进行解密, 从而, 实现了 MTC终端移动之后, 基站与 MTC终端之 间的数据传输。
实施例二
实施例二为与实施例一基于同一发明构思, 提供了一种数据传输装置, 由于该装 置与解决问题的原理与上述数据传输方法相似, 因此该装置的实施可以参见方法的实 施, 重复之处不再赘述。
如图 3所示, 为本发明实施例提供的网络侧数据传输装置的结构示意图, 包括: 接收单元 301 , 用于在处于空闲态下的 MTC终端发生移动后, 接收该 MTC终端 发送的 RRC连接请求, 该连接请求中携带有该 MTC终端的终端标识和数据加密相关 信息;
获得单元 302 , 用于根据接收单元 301接收的终端标识和数据加密相关信息, 获 得该 MTC终端对应的新加密算法及密钥;
加密单元 303 ,用于利用获得单元 302获得的新加密算法及密钥对发送给 MTC终 端的下行数据进行加密;
解密单元 304,用于利用获得单元 302获得的新加密算法及密钥对 MTC终端发送 的上行数据进行解密。
其中, 若源基站在 MTC 终端移动之前未指示空闲态下数据传输的固定资源, 则 数据加密相关信息包括加密算法输入参数, 相应地, 获得单元 302可以包括:
第一获取子单元, 用于根据终端标识获取所述 MTC 终端对应的原加密算法及密 钥;
第一更新子单元, 用于根据加密算法输入参数更新获取的原加密算法; 第一确定子单元, 用于确定第一更新子单元更新后的加密算法为该 MTC 终端对 应的新加密算法。
若若源基站在 MTC 终端移动之前指示了空闲态下数据传输的固定资源, 则数据 加密相关信息包括 MTC终端移动之前驻留小区的 ECGI, 相应地, 获得单元 302可以 包括:
第二获取子单元, 用于根据 ECGI从对应的小区获取所述终端标识对应的原加密 算法、 加密算法输入参数以及密钥;
第二更新子单元, 用于根据加密算法输入参数更新获取的原加密算法; 第二确定子单元, 用于确定第二更新子单元更新后的加密算法为 MTC 终端对应 的新加密算法。
具体实施时, 本发明实施例提供的网络侧数据传输装置, 还可以包括: 资源分配单元, 用于为该 MTC终端分配空闲态下传输数据所用的传输资源; 指示单元,用于通过 RRC连接请求的响应消息指示该 MTC终端在进入空闲态后, 使用分配的传输资源传输上行数据;
传输单元, 用于在该 MTC终端进入空闲态后, 使用分配的传输资源向该 MTC终 端传输下行数据。
需要说明的是, 上述网络侧数据传输装置可以设置于基站设备中。
基于同一发明构思, 本发明实施例还提供了一种 MTC 终端侧数据传输方法、 装 置、 MTC终端设备及数据传输系统, 由于上述方法、 装置、 设备及系统解决问题的原 理与网络侧数据传输方法相似, 因此上述方法、 装置、 设备及系统的实施可以参见网 络侧数据传输方法的实施, 重复之处不再赘述。
实施例三
如图 4所示, 为本发明实施例提供的 MTC终端侧数据传输方法的实施流程示意 图, 包括以下步骤:
5401、在处于空闲态下的 MTC终端发生移动后, 该 MTC终端向新基站发送 RRC 连接请求;
具体实施时, 当移动至新小区之后, 若 MTC 终端需要发送上行数据时, 则发起 随机接入, 并在随机接入的第三步, 即 MTC终端向基站发送发送的 RRC连接请求中 携带有自身的终端标识和数据加密相关信息。
需要说明的是, 如果 MTC 终端当前有上行数据需要发送, 也可以在随机接入的 第三步发送。
5402、 MTC终端接收新基站发送的加密算法及密钥;
其中, 加密算法及密钥为新基站根据该 MTC 终端发送的终端标识和数据加密相 关信息获得的;
5403、 MTC终端利用接收到的加密算法和密钥对发送给新基站的上行数据进行加 密, 以及利用获得的加密算法及密钥对新基站发送的下行数据进行解密。
若新基站为 MTC终端重新分配固定资源时, MTC终端侧数据传输方法, 还可以 包括以下步骤:
步骤一、 MTC终端接收新基站发送的、 进入空闲态后传输数据所用的传输资源的 指示信息; 其中, 该
指示信息为新基站通过随机接入第四步, 即向 MTC终端反馈 RRC连接请求的响 应消息时指示的;
步骤二、 MTC终端在进入空闲态后, 使用该指示信息所指示的传输资源传输上传 数据。 上述过程中, MTC终端在发生移动之后, 若要传输上行数据时, 可以通过发起随 机接入, 并在随机接入的第三步, 向新基站发送 RRC连接请求时携带自身的终端标识 和数据加密相关信息, 当新基站根据接收到的终端标识和数据加密相关信息获得该 MTC终端对应的加密算法和密钥之后, 指示该 MTC终端传输数据所使用的加密算法 和密钥, MTC终端根据新基站的指示利用接收到的加密算法和密钥对发送给新基站的 上行数据进行加密, 并利用接收到的加密算法和密钥对新基站发送的下行数据进行解 密。
实施例四
如图 5所示, 为本发明实施例提供的 MTC终端侧数据传输装置的结构示意图, 包括:
发送单元 501 , 用于在处于空闲态下的、 本装置所在的 MTC终端设备发生移动之 后, 向新基站发送 RRC连接请求;
其中, 连接请求中携带有该 MTC终端的终端标识和数据加密相关信息; 接收单元 502, 用于接收新基站发送的加密算法及密钥;
其中, 加密算法及密钥为新基站根据 MTC 终端的终端标识和数据加密相关信息 获得的;
加密单元 503 , 用于利用接收到的加密算法和密钥对发送给新基站的上行数据进 行力口密;
解密单元 504 , 用于利用接收到的加密算法及密钥对新基站发送的下行数据进行 解密。
具体实施时, 网络侧数据传输装置还可以包括传输单元, 其中:
接收单元 502 , 还用于接收新基站发送的、 进入空闲态后传输数据所用的传输资 源的指示信息;
其中, 该指示信息可以为新基站通过 RRC连接请求的响应消息指示;
传输单元, 用于在 MTC 终端设备进入空闲态后, 使用指示信息所指示的传输资 源传输上传数据。
具体实施时, 上述 MTC终端侧数据传输装置可以设置于 MTC终端设备中。 实施例五
如图 6所示, 为本发明实施例提供的数据传输系统的结构示意图, 包括基站设备 601和 MTC终端设备 602, 其中, 基站设备 601可以包括实施例二所述的网络侧数据 传输装置, MTC终端设备 602可以包括实施例四所述的 MTC终端侧数据传输装置。
较佳地, 本发明实施例涉及的 MTC终端可以为 MTC终端。
本发明实施例提供的数据传输方法、 装置、 系统及相关设备, 当 MTC 终端发生 移动之后, 通过向新基站发起随机接入, 并在 RRC连接请求携带自身的终端标识和数 据加密信息, 使得新基站能够根据终端标识和数据加密信息获得该 MTC 终端对应的 新加密算法和密钥, 这样, 新基站可以使用获得的新加密算法和密钥对需要传输的数 据进行加密, 并对接收到的数据进行解密; 而对于 MTC终端来说, 基站通过 RRC连 接请求的响应消息将获得的新加密算法和密钥通知 MTC终端, 这样, MTC终端使用 接收到的新加密算法和密钥对需要传输的数据进行加密,并对接收到的数据进行解密, 从而实现了 MTC终端与基站之间的数据传输。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程 序产品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件 方面的实施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序 代码的计算机可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等) 上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程 图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的 每一流程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供 这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处 理设备的处理器以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理 器执行的指令产生用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多 个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定 方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括 指令装置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计 算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算 机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或 方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造 性概念, 则可对这些实施例做出另外的变更和修改。 所以, 所附权利要求意欲解释为 包括优选实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精 神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的 范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 要 求
1、 一种数据传输方法, 其特征在于, 包括:
在处于空闲态下的 MTC终端发生移动后, 新基站接收所述 MTC终端发送的 RRC连 接请求, 所述连接请求中携带有所述 MTC终端的终端标识和数据加密相关信息;
所述新基站根据所述终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加 密算法及密钥; 并
利用获得的新加密算法及密钥对发送给所述 MTC终端的下行数据进行加密, 以及利 用获得的新加密算法及密钥对所述 MTC终端发送的上行数据进行解密。
2、 如权利要求 1所述的方法, 其特征在于, 若源基站在所述 MTC终端移动之前未指 示空闲态下数据传输的固定资源, 所述数据加密相关信息为加密算法输入参数; 以及
所述新基站根据所述终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加 密算法及密钥, 具体包括:
所述新基站根据所述终端标识获取所述 MTC终端对应的原加密算法及密钥; 利用所述加密算法输入参数更新获取的原加密算法;
确定更新后的加密算法为所述 MTC终端对应的新加密算法。
3、 如权利要求 1所述的方法, 其特征在于, 若源基站在所述 MTC终端移动之前指示 了空闲态下数据传输的固定资源, 所述数据加密相关信息包括所述 MTC终端移动之前驻 留小区的小区全局标识符 ECGI; 以及
所述新基站根据所述终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加 密算法及密钥, 具体包括:
所述新基站根据所述 ECGI从对应的小区获取所述终端标识对应的原加密算法、 加密 算法输入参数以及密钥; 并
利用获取的加密算法输入参数更新获取的原加密算法;
确定更新后的加密算法为所述 MTC终端对应的新加密算法。
4、 如权利要求 1、 2或 3所述的方法, 其特征在于, 还包括:
所述新基站为所述 MTC终端分配空闲态下传输数据所用的传输资源; 并
通过所述连接请求的响应消息指示所述 MTC终端在进入空闲态后, 使用分配的传输 资源传输上行数据; 以及
在所述 MTC终端进入空闲态后,使用分配的传输资源向所述 MTC终端传输下行数据。
5、 一种数据传输装置, 其特征在于, 包括: 接收单元, 用于在处于空闲态下的 ΜΊ^终端发生移动后,接收所述 MTC终端发送的
RRC连接请求, 所述连接请求中携带有所述 MTC终端的终端标识和数据加密相关信息; 获得单元, 用于根据所述接收单元接收的终端标识和数据加密相关信息, 获得所述 MTC终端对应的新加密算法及密钥;
加密单元, 用于利用获得的新加密算法及密钥对发送给所述 MTC终端的下行数据进 行力口密;
解密单元, 用于利用获得的新加密算法及密钥对所述 MTC终端发送的上行数据进行 解密。
6、 如权利要求 5所述的方法, 其特征在于, 若源基站在所述 MTC终端移动之前未指 示空闲态下数据传输的固定资源, 所述数据加密相关信息包括加密算法输入参数; 以及 所述获得单元, 包括:
第一获取子单元, 用于根据所述终端标识获取所述 MTC终端对应的原加密算法及密 钥;
第一更新子单元, 用于利用所述加密算法输入参数更新获取的原加密算法; 第一确定子单元, 用于确定第一更新子单元更新后的加密算法为所述 MTC终端对应 的新加密算法。
7、 如权利要求 5所述的装置, 其特征在于, 若源基站在所述 MTC终端移动之前指示 了空闲态下数据传输的固定资源, 所述数据加密相关信息包括所述 MTC终端移动之前驻 留小区的小区全局标识符 ECGI; 以及
所述获得单元, 包括:
第二获取子单元, 用于根据所述 ECGI从对应的小区获取所述终端标识对应的原加密 算法、 加密算法输入参数以及密钥;
第二更新子单元, 用于利用所述加密算法输入参数更新获取的原加密算法; 第二确定子单元, 用于确定第二更新子单元更新后的加密算法为所述 MTC终端对应 的新加密算法。
8、 如权利要求 5、 6或 7所述的装置, 其特征在于, 还包括:
资源分配单元, 用于为所述 MTC终端分配空闲态下传输数据所用的传输资源; 指示单元, 用于通过所述连接请求的响应消息指示所述 MTC终端在进入空闲态后, 使用分配的传输资源传输上行数据;
传输单元, 用于在所述 MTC终端进入空闲态后,使用分配的传输资源向所述 MTC终 端传输下行数据。
9、 一种基站设备, 其特征在于, 包括1 利要求 4~7任一权利要求所述的装置。
10、 一种数据传输方法, 其特征在于, 包括:
在处于空闲态下的 MTC终端发生移动后, 所述 MTC终端向新基站发送 RRC连接请 求, 所述连接请求中携带有所述 MTC终端的终端标识和数据加密相关信息;
所述 MTC终端接收所述新基站发送的加密算法及密钥, 所述加密算法及密钥为所述 新基站根据所述终端标识和数据加密相关信息获得的;
所述 MTC终端利用接收到的加密算法和密钥对发送给新基站的上行数据进行加密, 以及利用接收到的加密算法及密钥对新基站发送的下行数据进行解密。
11、 如权利要求 10所述的方法, 其特征在于, 还包括:
所述 MTC终端接收所述新基站发送的、 进入空闲态后传输数据所用的传输资源的指 示信息, 所述指示信息为所述新基站通过所述连接请求的响应消息指示的; 以及
在进入空闲态后, 使用所述指示信息所指示的传输资源传输上传数据。
12、 一种数据传输装置, 其特征在于, 包括:
发送单元, 用于在处于空闲态下的、 本装置所在的 MTC终端设备发生移动之后, 向 新基站发送 RRC连接请求, 所述连接请求中携带有所述 MTC终端的终端标识和数据加密 相关信息;
接收单元, 用于接收所述新基站发送的加密算法及密钥, 所述加密算法及密钥为所述 新基站根据所述终端标识和数据加密相关信息获得的;
加密单元, 用于利用接收到的加密算法和密钥对发送给新基站的上行数据进行加密; 解密单元, 用于利用接收到的加密算法及密钥对新基站发送的下行数据进行解密。
13、 如权利要求 12所述的装置, 其特征在于, 还包括传输单元, 其中:
所述接收单元, 还用于接收所述新基站发送的、 进入空闲态后传输数据所用的传输资 源的指示信息, 所述指示信息为所述新基站通过所述连接请求的响应消息指示的;
所述传输单元, 用于在所述 MTC终端设备进入空闲态后, 使用所述指示信息所指示 的传输资源传输上传数据。
14、 一种 MTC终端设备, 其特征在于, 包括权利要求 12或 13所述的装置。
15、 一种数据传输系统, 其特征在于, 包括基站设备和 MTC终端设备, 其中, 所述 基站设备包括权利要求 4〜7任一权利要求所述的装置, 所述 MTC终端设备包括权利要求 12或 13所述的装置。
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