WO2018058439A1 - 一种支撑数据传输的方法、装置及系统 - Google Patents

一种支撑数据传输的方法、装置及系统 Download PDF

Info

Publication number
WO2018058439A1
WO2018058439A1 PCT/CN2016/100830 CN2016100830W WO2018058439A1 WO 2018058439 A1 WO2018058439 A1 WO 2018058439A1 CN 2016100830 W CN2016100830 W CN 2016100830W WO 2018058439 A1 WO2018058439 A1 WO 2018058439A1
Authority
WO
WIPO (PCT)
Prior art keywords
type
rrc signaling
access network
radio access
network device
Prior art date
Application number
PCT/CN2016/100830
Other languages
English (en)
French (fr)
Inventor
李秉肇
权威
杨晓东
张戬
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/100830 priority Critical patent/WO2018058439A1/zh
Priority to CN201680089541.3A priority patent/CN109792602B/zh
Publication of WO2018058439A1 publication Critical patent/WO2018058439A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/037—Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0457—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply dynamic encryption, e.g. stream encryption

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a method, device and system for supporting data transmission.
  • the 3rd Generation Partnership Project (3GPP) standard is discussing Light Connection technology.
  • the terminal device can enter the light connection state under the indication of the first Radio Access Network (RAN) device.
  • the light connection state is a state between a Radio Resource Control (RRC) connected state and an idle (Idle) state.
  • RRC Radio Resource Control
  • Idle idle
  • the terminal device entering the light connection state releases the RRC connection, but saves the connection information with the first radio access network device.
  • the first radio access network device allocates a context identifier to the terminal device.
  • the terminal device entering the light connection state may select the camped cell based on the cell weight and send the context identifier to the second radio access network device in the camping cell and serving the terminal device. Sending, by the second radio access network device, the context identifier of the terminal device to the first radio access network device, so that the second radio access network obtains context information of the terminal device from the first radio access network device .
  • the context information of the terminal device since the context information of the terminal device is stored in the first radio access network device, the context information includes connection configuration parameters between the first radio access network device and the terminal device.
  • the saved context information may be used to recover the RRC connection between the terminal device and the first radio access network device. In order to avoid the signaling load during the RRC connection re-establishment process.
  • the terminal device needs to perform a context information transfer and an S1 handover, and the first radio access network device needs to be replaced once. Because the replacement of the first radio access network device causes the terminal device key to be updated, the data processing procedure of the terminal device is interrupted, resulting in unnecessary signaling overhead.
  • the present invention provides a data communication method and apparatus for ensuring effective communication between a terminal device and a second radio access network device on the premise that the first radio access network device is unchanged.
  • an embodiment of the present application provides a method for supporting data transmission, including: receiving, by a second radio access network device, an identifier of the terminal device sent by the terminal device, and transmitting the identifier to the first radio access network device An identifier of the terminal device, receiving configuration information of the first type of RRC signaling sent by the first radio access network device, determining configuration information of the second type of RRC signaling, and transmitting configuration information of the second type of RRC signaling to the terminal device Or the configuration information of the second type of RRC signaling and the configuration information of the first type of RRC signaling, where the configuration information of the first type of RRC signaling is used by the first radio access network device to pass the second radio access network
  • the device communicates with the terminal device corresponding to the terminal identifier, and the configuration information of the second type of RRC signaling is used for communication between the second radio access network device and the terminal device corresponding to the terminal identifier.
  • an embodiment of the present application provides a method for supporting data transmission, including: a second radio access network device forwarding, to a first radio access network device, an identifier of a terminal device sent by the terminal device, and receiving the first wireless
  • the access network device sends configuration information of the first type of RRC signaling and configuration information of the second type of RRC signaling, and sends configuration information of the first type of RRC signaling and configuration information of the second type of RRC signaling to the terminal device, or And transmitting the configuration information of the second type of RRC signaling to the terminal device, where the configuration information of the first type of RRC signaling is used by the first radio access network device by using the second radio access network device and the terminal identifier
  • the corresponding terminal device performs communication; the configuration information of the second type of RRC signaling is used for communication between the second radio access network device and the terminal device corresponding to the terminal identifier.
  • the determining, by the second radio access network device, the configuration information of the second type of RRC signaling includes: generating the second type of RRC signaling configuration information.
  • the second type of RRC signaling is generated by the second radio access network device itself, and the first radio access network device is prevented from transmitting the configuration information of the second type of RRC signaling to the second radio access network device, which can save transmission resources.
  • the second type of RRC signaling configuration information includes: the second type of RRC signaling adopts an encryption policy different from the first type of RRC signaling. Specifically, the first type of RRC signaling is encrypted by using the terminal device key, and the second type of RRC signaling is not encrypted; or the first type of RRC signaling is encrypted by using the first key, The second type of RRC signaling uses the second key for encryption, the first The key is different from the second key.
  • Different encryption policies can be used to enable different radio access network devices to manage different RRC signaling, and different RRC signaling of different radio access network devices adopt different encryption mechanisms to ensure reasonable configuration of radio resources and wireless protection. The transport continuity of the bearer.
  • the method further includes: the second radio access network device sending an acknowledgement message to the terminal device, where the acknowledgement message includes update status indication information, the update status indication The information is used to instruct the terminal device to perform data transmission, and replace the target cell based on cell reselection.
  • the terminal device can be prevented from being transferred to the normal connection state and then sending data, thereby improving the working performance of the terminal device.
  • the identifier of the terminal device is allocated and notified to the terminal device by the first radio access network device, or is allocated and notified to the terminal device by the core network device, or is stored by the terminal device itself.
  • an embodiment of the present application provides a method for supporting data transmission, including: receiving, by a first radio access network device, an identifier of a terminal device sent by a second radio access network device, where the terminal identifier is sent by the terminal device And sending, to the second radio access network device, configuration information of the first type of RRC signaling to the second radio access network device, where configuration information of the first type of RRC signaling is used for the second radio access network
  • the device determines configuration information of the second type of RRC signaling, and sends configuration information of the first type of RRC signaling to the terminal device, where the configuration information of the first type of RRC signaling is used.
  • the first radio access network device communicates with the terminal device corresponding to the terminal identifier by using the second radio access network device, and the configuration information of the second type of RRC signaling is used by the second radio access network device and
  • the terminal identifier corresponds to the communication between the terminal devices. Benefits can be referenced before The embodiment is described.
  • an embodiment of the present application provides a method for supporting data transmission, including: receiving, by a first radio access network device, an identifier of a terminal device sent by a second radio access network device, where the terminal identifier is sent by the terminal device Sending, to the second radio access network device, configuration information of the first type of RRC signaling and configuration information of the second type of RRC signaling to the second radio access network device, and configuring the first type of RRC signaling
  • the information is used by the second radio access network device to determine the configuration information of the second type of RRC signaling after receiving the first type of RRC signaling, and send configuration information of the first type of RRC signaling to the terminal device;
  • the configuration information of the RRC signaling is used by the first radio access network device to communicate with the terminal device corresponding to the terminal identifier by using the second radio access network device, and the configuration information of the second type of RRC signaling is used by And communicating between the second radio access network device and the terminal device corresponding to the terminal identifier.
  • the configuration information of the first type of RRC signaling includes: the first type of RRC signaling adopts a second type of RRC signaling. Make different encryption strategies. Specifically, the first type of RRC signaling is encrypted by using the terminal device key, and the second type of RRC signaling is not encrypted; or the first type of RRC signaling is encrypted by using the first key, the second The RRC-like signaling is encrypted using a second key, which is different from the second key.
  • Different cryptographic policies are used to enable different RRC devices to manage different RRC signaling, and different RRC signaling of different RAT devices adopt different encryption mechanisms to ensure reasonable configuration of radio resources and ensure radio bearers.
  • the transmission encryption continuity is used to enable different RRC devices to manage different RRC signaling, and different RRC signaling of different RAT devices adopt different encryption mechanisms to ensure reasonable configuration of radio resources and ensure radio bearers.
  • the identifier of the terminal device is allocated and notified by the first radio access network device for the terminal device; or by the core
  • the network device is assigned and notified to the terminal device or stored by the terminal device itself.
  • an embodiment of the present application provides a method for supporting data transmission, including: acquiring, by an end device, an identifier of the terminal device, sending an identifier of the terminal device to the second radio access network device, and receiving a second wireless connection.
  • the configuration information of the second type of RRC signaling sent by the network access device and the configuration information of the first type of RRC signaling sent by the first radio access network device; or receiving the second type of RRC sent by the second radio access network device The configuration information of the signaling and the configuration information of the first type of RRC signaling, where the configuration information of the first type of RRC signaling is used by the first radio access network device and the terminal identifier by the second radio access network device.
  • the corresponding terminal device performs communication; the configuration information of the second type of RRC signaling is used for communication between the second radio access network device and the terminal device corresponding to the terminal identifier.
  • the configuration information of the first type of RRC signaling received by the terminal device and the configuration information of the second type of RRC signaling specify that the first type of RRC signaling and the second type of RRC signaling use different encryption policies.
  • the first type of RRC signaling is encrypted by using the terminal device key, and the second type of RRC signaling is not encrypted; or the first type of RRC signaling is encrypted by using the first key,
  • the second type of RRC signaling is encrypted by using a second key, which is different from the second key.
  • Different cryptographic policies are used to enable different RRC devices to manage different RRC signaling, and different RRC signaling of different RAT devices adopt different encryption mechanisms to ensure reasonable configuration of radio resources and ensure radio bearers.
  • the transmission encryption continuity is used to enable different RRC devices to manage different RRC signaling, and different RRC signaling of different RAT devices adopt different encryption mechanisms to ensure reasonable configuration of radio resources and ensure radio bearers.
  • the method further includes: receiving, by the terminal device, an acknowledgement message sent by the second radio access network device, where the acknowledgement message includes update status indication information, where the update status indication information is used to indicate that the terminal device performs data Send and replace the target cell based on cell reselection.
  • the acquiring, by the terminal device, the identifier of the terminal device includes: receiving the terminal device identifier allocated and notified by the first radio access network device; or receiving the terminal device identifier allocated and notified by the core network device; or acquiring itself The stored terminal device ID.
  • an embodiment of the present invention provides a device for supporting data transmission, where the device has a function of implementing behavior of a second radio access network device in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus for supporting data transmission comprises a receiver, a transmitter and a processor, the receiver is configured to receive an identifier of the terminal device and configuration information of the first type of RRC signaling, and the processor determines the second Configuration information of the RRC signaling, the transmitter is configured to support communication between the first radio access network device and the UE, send the terminal device identifier to the first radio access network device, and send and transmit the configuration involved in the foregoing method to the terminal device. information.
  • an embodiment of the present invention provides another apparatus for supporting data transmission, where the apparatus has a function of implementing behavior of a first radio access network device in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the other device for supporting data transmission comprises a receiver and a transmitter, the receiver is configured to receive an identifier of the terminal device, and the transmitter is configured to support communication between the second radio access network device and the UE, The second radio access network device and the terminal device send the configuration information involved in the foregoing method.
  • an embodiment of the present invention provides another apparatus for supporting data transmission, where the apparatus has a function of implementing behavior of a terminal device in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus for supporting data transmission comprises a processor, a transmitter and a receiver, the processor is configured to acquire an identifier of the terminal device, and the transmitter is configured to send the terminal to the second radio access network device.
  • An identifier of the device, the receiver is configured to receive configuration information involved in the above method.
  • the embodiment of the present application further provides a system for supporting data transmission, where the system includes at least a core network device, at least one first radio access network device, at least one second radio access network device, and at least one terminal.
  • the device, the first radio access network device and the core network device communicate through the first interface, where the first radio access network device and the second radio access network device communicate through the second interface, the second radio access The network device communicates with the terminal device by using a third interface, where: the first radio access network device is configured to manage a connection between the terminal device and the core network device, and has a first type of RRC signaling processing function, the first The RRC signaling is used by the first radio access network device to communicate with the terminal device by using the second radio access network device; the second radio access device is configured to manage the second radio access network device and the terminal device Between the wireless resources and the second type of RRC letter For the processing function, the second type of RRC signaling is used for communication between the second radio access network device and the terminal device; data transmission between the terminal device and
  • the first type of RRC signaling is cryptographic signaling
  • the second type of RRC signaling is unencrypted signaling
  • the first type of RRC signaling is encrypted by using a first key
  • the second type of RRC The signaling is encrypted using a second key, the first key and the second key being different keys.
  • Different cryptographic policies are used to enable different RRC devices to manage different RRC signaling, and different RRC signaling of different RAT devices adopt different encryption mechanisms to ensure reasonable configuration of radio resources and ensure radio bearers. The transmission encryption continuity.
  • the first radio access network device further has a PDCP layer processing function, where the PDCP layer processing function is used to: encrypt or decrypt data transmitted between the terminal device and the core network device; or The first type of RRC signaling between the device and the first radio access network device is encrypted or decrypted.
  • the second radio access network device further has a PDCP layer processing function, where the PDCP layer processing function is used to: perform a second type of RRC signaling between the terminal device and the second radio access network device. Encrypt or decrypt.
  • the method, device, and system for supporting data transmission provided by the foregoing embodiments, by setting an RRC layer in a protocol stack of a second radio access network device, data transmission between the second radio access network device and the terminal device may be Using the RRC layer of the second radio access network device to configure a data transmission channel with the terminal device, so that data transmission between the terminal device and the second radio access network device does not need to be forwarded through the first radio access network. That is, there is no need to change the first radio access network device, and the second radio access network device and the terminal device can Direct data transfer.
  • the use of this communication method ensures the continuity of the data processing flow of the terminal device and improves the work efficiency.
  • the embodiment of the present application divides the RRC signaling, so that different radio access network devices manage different RRC signaling, and different RRC signaling of the radio access network device adopts different encryption mechanisms to ensure wireless The resources are reasonably configured, and the transmission encryption continuity of the radio bearer is guaranteed.
  • the embodiment of the present application encrypts the PDCP layer of the second radio access network device, so that the second radio access network device can separately configure the radio resource of the second radio access network device in an encrypted manner, and at the same time,
  • the RRC layer of the radio access network can ensure that the bearer management signaling of the terminal device adopts a different encryption mechanism than the second radio access network. Therefore, the different radio access network devices manage different RRC signaling, so that the problem that the terminal device data processing is interrupted due to the replacement of the second radio access network device and the first radio access network device in the prior art can be solved. .
  • FIG. 1 is a schematic flow chart of data transmission of a terminal device in a light connection state in the prior art
  • FIG. 2 is a schematic flowchart of data transmission of a terminal device in a light connection state according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for supporting data transmission according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for supporting data transmission according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for supporting data transmission according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a protocol stack according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart of a method for supporting data transmission according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of another method for supporting data transmission according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of another method for supporting data transmission according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart diagram of another method for supporting data transmission according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another protocol stack according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a supporting data transmission apparatus according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of another supporting data transmission apparatus according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of another supporting data transmission apparatus according to an embodiment of the present invention.
  • the communication system used in the embodiment of the present invention may be a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division multiple access.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • OFDM orthogonal frequency division
  • the radio access network device involved in the embodiment of the present invention may be used to provide a wireless communication function for the terminal device.
  • the radio access network device may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the radio access network device may be a base station (Base T access network station, BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in WCDMA, or may be an evolved type in LTE.
  • the base station (Evolutional Node B, eNB or e-NodeB), and may be the corresponding device gNB in the 5G network.
  • the foregoing apparatus for providing a wireless communication function for a terminal device is collectively referred to as a radio access network device.
  • the terminal device may also be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), etc., and the terminal device may be through a radio access network.
  • Radio Access Network, RAN communicates with one or more core networks, for example, the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device may also be portable , pocket, handheld, computer built-in or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • the embodiment of the invention is not specifically limited.
  • the core network device controls one or more radio access network devices, and may uniformly allocate resources in the system, and may also allocate resources to the terminal device.
  • the radio access network device may be a Node B and an RNC in a UMTS system, and the core network device may be an SGSN and a GGSN.
  • the radio access network device may be an eNB in an LTE system, and the core network device may be an MME.
  • the core network device may be a wireless network straddle-type cooperative controller or the like, which is not specifically limited in the embodiment of the present invention.
  • the radio access network device involved in the embodiments of the present invention may include at least a first radio access network device (for example, a primary radio access network device) and a second radio access network device (for example, a secondary radio access network device).
  • the first radio access network device may indicate that the terminal device enters a light connection state or a dual connection state, and allocates a context label to the terminal device. knowledge.
  • the terminal device in the light connection state or the dual connection state stores the context and performs mobility of cell reselection.
  • the light connection state may be a sub-state of a radio resource control (RRC) connection state, or may be an enhanced state of an idle state, or may be an independent state.
  • RRC radio resource control
  • the name and shape of the light connection state are not specifically limited.
  • the light connection state can also be called inactive state, deactivated state, low active state or low overhead state.
  • the dual connectivity state is a technology in which a terminal device simultaneously connects two radio access network devices for data transmission.
  • the terminal device in the dual connectivity state may be respectively connected to the primary radio access network device (such as the first radio access network device) and the secondary radio access network device (such as the second radio access network device), and the terminal device is required to be at the same time.
  • only the primary radio access network device has an RRC layer, and the primary radio access network device adds and deletes the secondary radio access network device through its own RRC layer.
  • the secondary radio access network device cannot directly perform RRC management with the terminal device. If the secondary radio access network device needs to perform RRC resource modification, the secondary radio access network device notifies the primary radio access network device, and the primary radio access network device The RRC message is generated, and the terminal device is notified by the RRC message to perform resource modification.
  • the context transfer and the S1 switch need to be performed once, and the first wireless access is replaced once, each time the terminal device moves to replace the second radio access network device.
  • the network device causes the terminal device key to be updated, causing the terminal device data processing flow to be interrupted, resulting in unnecessary signaling overhead. Therefore, how to ensure the first radio access network in the process of moving the terminal device The device remains unchanged, and only the second radio access network device is changed, and the mechanism for continuously transmitting data is maintained, which is a technical problem to be solved by the present invention.
  • the method for supporting data transmission provided by the embodiment of the present invention can perform the function division between the RRC layer of the first radio access network device and the second radio access network device, so that the terminal device can be connected to the second wireless device.
  • the access network device establishes an RRC connection, so that in the process of data transmission with the terminal device, only the second radio access network device needs to be changed, and the first radio access network device does not need to be changed, thereby ensuring timely acquisition of effective transmission resources. Data transmission to improve work efficiency.
  • FIG. 3 is a schematic diagram of a method for supporting data transmission according to an embodiment of the present invention, including:
  • the second radio access network device receives an identifier of the terminal device that is sent by the terminal device.
  • the second radio access network device sends the identifier of the terminal device to the first radio access network device.
  • the identifier of the terminal device may be used to request the first radio access network device to generate the first type of RRC signaling.
  • the second radio access network device receives the configuration information of the first type of RRC signaling sent by the first radio access network device, where the configuration information of the first type of RRC signaling is used by the first radio access network device.
  • the second radio access network device communicates with the terminal device corresponding to the terminal identifier.
  • the second radio access network device determines configuration information of the second type of RRC signaling, where the configuration information of the second type of RRC signaling is used by the second radio access network device and the terminal device corresponding to the terminal identifier. Communicate between.
  • the second radio access network device sends configuration information of the second type of RRC signaling or configuration information of the second type of RRC signaling and configuration information of the first type of RRC signaling to the terminal device.
  • the second radio access network device determines that the second type of RRC signaling includes: the second radio access network device generates the second type of RRC signaling configuration information.
  • the second radio access network device determines that the second type of RRC signaling includes: the second radio access network device generates the second type of RRC signaling configuration information.
  • the second type of RRC signaling adopts an encryption policy different from the first type of RRC signaling, and the first type of RRC signaling is encrypted by using the terminal device key, and the second type of RRC signaling is not performed. Encryption processing; or, the first type of RRC signaling is encrypted by using a first key, and the second type of RRC signaling is encrypted by using a second key, the first key being different from the second key.
  • the method further includes: the second radio access network device sending an acknowledgement message to the terminal device, where the acknowledgement message includes update status indication information, where the update status indication information is used to indicate that the terminal device performs data transmission, and is based on The cell is reselected to replace the target cell.
  • the identifier of the terminal device is allocated and notified to the terminal device by the first radio access network device, or is allocated and notified to the terminal device by the core network device, or is stored by the terminal device itself.
  • the method for supporting data transmission is that the RRC layer is set in the protocol stack of the second radio access network device, and the second radio access network device can adopt the RRC layer configuration between the RRC layer and the terminal device.
  • Data transmission channel thus enabling the terminal device.
  • the data transmission between the two radio access network devices does not need to go through the first radio access network, that is, the first radio access network device does not need to be changed, and the second radio access network device and the terminal device can directly perform data transmission.
  • the use of this communication method ensures the continuity of the data processing flow of the terminal device and improves the work efficiency.
  • FIG. 4 is a schematic diagram of another method for supporting data transmission according to an embodiment of the present invention, including:
  • the first radio access network device receives the identifier of the terminal device that is sent by the second radio access network device, where the terminal identifier is sent by the terminal device to the second radio access network device.
  • the first radio access network device sends, to the second radio access network device, configuration information of a first type of RRC signaling, where configuration information of the first type of RRC signaling is used by the second radio access network device. After receiving the first type of RRC signaling, determining configuration information of the second type of RRC signaling.
  • the configuration information of the first type of RRC signaling is used by the first radio access network device to communicate with the terminal device corresponding to the terminal identifier by using the second radio access network device, the second type of RRC signaling
  • the configuration information is used for communication between the second radio access network device and the terminal device corresponding to the terminal identifier.
  • the first radio access network device sends configuration information of the first type of RRC signaling to the terminal device.
  • the configuration information of the first type of RRC signaling includes: the first type of RRC signaling adopts an encryption policy different from the second type of RRC signaling.
  • the first type of RRC signaling adopts an encryption policy different from the second type of RRC signaling, and the first type of RRC signaling is encrypted by using the terminal device key, and the second The RRC signaling is not performed by the encryption process; or the first type of RRC signaling is encrypted by using the first key, and the second type of RRC signaling is encrypted by using the second key, the first key and the second key.
  • the keys are different.
  • the identifier of the terminal device is allocated and notified by the first radio access network device to the terminal device; or is allocated and notified by the core network device to the terminal device, or is stored by the terminal device itself.
  • FIG. 5 is a schematic diagram of a method for supporting data transmission according to an embodiment of the present invention, including:
  • the terminal device acquires an identifier of the terminal device.
  • the terminal device sends the identifier of the terminal device to the second radio access network device.
  • the terminal device receives configuration information of the second type of RRC signaling sent by the second radio access network device and configuration information of the first type of RRC signaling sent by the first radio access network device; or receives the second wireless The configuration information of the second type of RRC signaling and the configuration information of the first type of RRC signaling sent by the access network device.
  • the configuration information of the first type of RRC signaling is used by the first radio access network device to communicate with the terminal device corresponding to the terminal identifier by using the second radio access network device; the second type of RRC signaling The configuration information is used for communication between the second radio access network device and the terminal device corresponding to the terminal identifier.
  • the configuration information of the first type of RRC signaling received by the terminal device and the configuration information of the second type of RRC signaling specify that the first type of RRC signaling and the second type of RRC signaling use different encryption policies.
  • the first type of RRC signaling and the second type of RRC signaling use different encryption.
  • the strategy includes: the first type of RRC signaling is encrypted by using the terminal device key, and the second type of RRC signaling is not encrypted; or the first type of RRC signaling is encrypted by using the first key, the The second type of RRC signaling is encrypted by using a second key, which is different from the second key.
  • the method further includes: receiving, by the terminal device, an acknowledgement message sent by the second radio access network device, where the acknowledgement message includes update status indication information, where the update status indication information is used to indicate that the terminal device performs data transmission, And replacing the target cell based on cell reselection.
  • the terminal device acquiring the identifier of the terminal device includes: receiving the terminal device identifier allocated and notified by the first radio access network device; or receiving the terminal device identifier allocated and notified by the core network device; or acquiring the stored by the terminal device Terminal device identification.
  • the figure includes a protocol stack structure of the terminal device, a protocol stack structure of the first radio access network device, and a protocol stack structure of the second radio access network device.
  • the first radio access network device can be used to manage a connection between the terminal device and the core network device, and the first radio access network device has a packet data convergence layer protocol (Packet Data Convergence Protocol , PDCP) layer processing function and RRC signaling processing function.
  • PDCP Packet Data Convergence Protocol
  • the RRC layer and the terminal device in the first radio access network device perform RRC signaling interaction.
  • the RRC signaling of the first radio access network device may be referred to as a first type of RRC message, and may be used to manage radio bearer parameters of the terminal device.
  • the second radio access network device has an RRC signaling processing function, and further has a Radio Link Control (RLC) layer processing function and a media access control (Media Access Control) , MAC) layer processing function or physical layer at least one processing function.
  • RLC Radio Link Control
  • Media Access Control Media Access Control
  • MAC media access control
  • the RRC signaling interaction between the RRC layer of the second radio access network and the RRC layer of the terminal device may be performed.
  • the RRC signaling of the second radio access network node may be referred to as a second type of RRC message, and is used to manage radio resources between the terminal device and the second radio access network device.
  • the terminal device the data of the terminal device is processed by the at least one RLC layer processing function, the MAC layer processing function or the PHY layer processing function of the second radio access network device, and then processed by the PDCP layer function of the first radio access network device. Then send it to the core network device.
  • the first radio access network device, the second radio access network device, and the terminal device may be connected by a wireless connection, a wired connection, or a combination of a wired connection and a wireless connection, for which the inventor does not To be specific, it is within the scope of the present invention to implement direct data transmission between the terminal device and the second radio access network device.
  • the terminal device that enters the light connection state or the dual-connection state changes the RRC layer of the first radio access network device and the second radio access network device
  • the first radio connection is not required when the resident cell is changed.
  • the network access device makes a handover indication, but selects the camped cell based on the cell reselection according to the mobile situation.
  • the terminal device is served by the second radio access network device in the camped cell.
  • the RRC connection may be established with the second radio access network device, and in the process of performing data transmission with the terminal device, only the second radio access network device needs to be changed, and the first radio access network device does not need to be changed, thereby ensuring Timely access to effective transmission resources for data transmission and improve work efficiency.
  • the method for supporting data transmission shown in FIG. 7 may be based on the protocol stack architecture shown in FIG. 6. As shown in FIG. 7, the method may include the following steps:
  • the terminal device sends the terminal device identifier to the current second radio access network device.
  • the terminal device identifier may be allocated by the first radio access network device or allocated by the core network device, and notified to the terminal device; or the terminal device identifier stored by the terminal device itself. Regardless of the manner in which the terminal device obtains the terminal device identifier, the scope of the invention is claimed.
  • the second radio access network device After receiving the identifier of the terminal device, the second radio access network device sends the identifier of the terminal device to the first radio access network device.
  • the second radio access network device sends a connection recovery request to the first radio access network device, where the connection recovery request carries the identifier of the terminal device.
  • the second radio access network device determines the first radio access network device according to the terminal device identifier.
  • the terminal device identifier includes first radio access network device identifier information
  • the second radio access network device determines the first radio access network device according to the first radio access network device identifier information.
  • the first radio access network device sends a first radio access network context management message to the second radio access network device, where the context management message includes the first radio access network device.
  • the first radio access network device and the terminal device both save context information of the terminal device.
  • the context management message includes connection configuration parameters between the first radio access network device and the terminal device.
  • the saved RRC management message may be used to restore the RRC connection with the first radio access network device, thereby avoiding the signaling load in the RRC connection reestablishment process.
  • the first type of RRC signaling may be used by the first radio access network device to communicate with the terminal device through the second radio access network device.
  • the first type of RRC signaling may be RRC signaling for bearer management, RRC signaling for measurement management, or RRC signaling for capability management.
  • the second type of RRC signaling may be used by the second radio access network device to communicate with the terminal device.
  • the second type of RRC signaling may be physical radio resource RRC signaling used to manage the second radio access network device.
  • the second type of RRC signaling can be directly sent to the RLC layer for processing, and is not processed by the PDCP layer.
  • the second radio access network device After receiving the context management message sent by the first radio access network device, the second radio access network device sends an acknowledgement message to the terminal device, where the acknowledgement message carries configuration information of the first type of RRC signaling and a second type of RRC. Signaling configuration information.
  • the acknowledgement message sent by the second radio access network device to the terminal device is further included.
  • the update status indication information is used to indicate the status of the terminal device update, and the updated status may be that the terminal device may send data, and may replace the target cell based on the cell reselection.
  • the confirmation message further includes an indication that the first radio access network device does not switch, and is used to indicate that the second radio access network device does not switch the first radio access network device.
  • the terminal device receives the acknowledgement message, and performs configuration of the first type of RRC signaling and configuration of the second type of RRC signaling for the terminal device according to the acknowledgement message.
  • the second radio access network device sends the second type of RRC signaling to the terminal device according to the configuration information of the second type of RRC signaling.
  • the first radio access network device sends the first type of RRC signaling to the terminal device according to the information configured by the first type of RRC signaling.
  • steps 706 and 707 are performed in no particular order.
  • the first type of RRC signaling may also be generated by the second radio access network device, sent to the first radio access network device, and then sent by the first radio access network device to the terminal in step 707. device.
  • the second radio access network device receives the first type of RRC signaling configuration information sent by the first radio access network device, where the second radio access network device uses the first type of RRC signaling configuration transmission.
  • the first type of RRC signaling is sent to the user equipment; the second radio access network device receives and uses the second type of RRC signaling to configure the second type of RRC signaling, and the second radio access network device performs the second type of RRC information. Order processing.
  • the first radio access network device determines to change the state of the terminal device, sends a state change command to the terminal device, indicates a new state of the terminal device, and sets the terminal The standby state change notification is sent to the second radio access network device.
  • the new status of the terminal device may include: not saving the context of the terminal device, selecting the target cell based on cell reselection, and failing to perform data transmission.
  • the new status of the terminal device may include: saving the context of the terminal device, selecting the target cell based on cell reselection, and failing to perform data transmission.
  • the support data transmission method provided by the embodiment of the present invention by setting an RRC layer in a protocol stack of the second radio access network device, the second radio access network device may use its own RRC layer configuration and data between the terminal devices. Transmitting a channel, so that data transmission between the terminal device and the second radio access network device does not need to go through the first radio access network, that is, there is no need to change the first radio access network device, and the second radio access network device and the terminal.
  • the data transmission can be directly performed between the devices, and the communication method ensures the continuity of the data processing flow of the terminal device and improves the working efficiency.
  • FIG. 8 is another method for supporting data transmission according to an embodiment of the present invention. Steps 801-803 in this embodiment are similar to steps 701-703 in the embodiment shown in FIG. 4, and steps 808-809 are performed. Similar to 706-707 in Figure 7, the difference is:
  • the second radio access network device After receiving the context management information sent by the first radio access network device, the second radio access network device sends an acknowledgement message to the terminal device, where the acknowledgement message carries configuration information of the second type of RRC signaling.
  • the terminal device receives the acknowledgement message, and performs configuration of the second type of RRC signaling according to the acknowledgement message.
  • the first radio access network device sends configuration information of the first type of RRC signaling to the terminal device.
  • the terminal device performs configuration of the first type of RRC signaling.
  • steps 804-805 and 806-807 is in no particular order.
  • the terminal device may perform the first type of RRC signaling configuration and the second type of RRC signaling configuration.
  • the step 806 may also be performed after the terminal device identifier is received, that is, the first radio access network device may send configuration information of the first type of RRC signaling to the terminal device corresponding to the terminal device identifier, where the terminal device is used.
  • the configuration of the first type of RRC signaling is performed.
  • steps 901-902 in this embodiment are similar to steps 701-702 in the embodiment shown in FIG. 7, steps 906-908. Similar to 705-707 in Figure 7, the difference is:
  • the first radio access network device sends a first radio access network context management message to the second radio access network device, where the context management message packet carries the first type of RRC configured by the first radio access network device as the terminal device. Signaling configuration information.
  • the second radio access network device After receiving the context management message sent by the first radio access network device, the second radio access network device generates configuration information of the second type of RRC signaling.
  • the second radio access network device sends an acknowledgment message to the terminal device, where the acknowledgment message carries configuration information of the first type of RRC signaling and configuration information of the second type of RRC signaling.
  • step 1005 the second radio access network is directed to
  • the configuration message sent by the terminal device carries the configuration information of the second type of RRC signaling, and the configuration information of the first type of RRC signaling is notified by the first radio access network device to the terminal device.
  • the beneficial effects of this embodiment are also similar to those of the embodiment of FIG. 9, and are not described herein again.
  • the protocol stack structure shown in FIG. 11 is similar to the protocol stack structure shown in FIG. 9 , except that the protocol stack architecture of the terminal device in the figure includes an S-RRC (serving RRC) layer and a PDCP layer, respectively.
  • the S-RRC layer in the protocol stack architecture of the second radio access network device communicates with the PDCP layer. specific:
  • the second radio access network device has a S-RRC signaling processing function and a PDCP function for processing the S-RRC signaling, and further has an RLC layer processing function, a MAC layer processing function, or at least one processing function of the PHY layer.
  • the RRC signaling interaction is performed between the S-RRC layer of the second radio access network device and the S-RRC layer of the terminal device.
  • the RRC signaling of the second radio access network device is defined as a second type of RRC message for managing radio resources between the terminal device and the second radio access network device.
  • the second radio access network device uses a separate PDCP layer for encryption, and the encryption method may adopt a different encryption method than the first radio access network device.
  • the terminal device can communicate with the first radio access network device and the second radio access network device, respectively.
  • the terminal device sends the first type of RRC signaling to the first radio access network device A-RRC layer through the A-RRC layer set in itself, and sets the second type of RRC through the S-RRC layer set by itself.
  • the signaling is sent to the S-RRC layer of the second radio access network device; on the other hand, the terminal device passes the data through the RLC layer processing function of the second radio access network device, the MAC layer processing function, or at least one processing function of the PHY layer. After processing, it is processed by the PDCP layer of the first radio access network device and then sent to the core network.
  • the method of any of the foregoing embodiments of FIG. 7 to FIG. 10 may also perform data transmission based on the protocol stack architecture shown in FIG. 11, specifically by dividing RRC signaling, so that different radio access network devices manage different RRCs. Signaling, and RRC signaling of different radio access network devices adopt different encryption mechanisms to ensure reasonable configuration of radio resources and ensure transmission continuity of radio bearers.
  • the first type of RRC signaling may be sent to the PDCP layer of the first radio access network device for processing, and the PDCP layer performs encryption.
  • the processing is sent to the second radio access network device, and is processed by the RLC layer, the MAC layer, and the PHY layer by the second radio access network device, and then sent to the user equipment.
  • the first type of RRC signaling and the second type of RRC signaling are encrypted using different keys.
  • the first type of RRC signaling uses a key for encryption
  • the second type of RRC signaling is not encrypted.
  • the terminal device moves when the second radio access network device needs to be replaced, the first radio access network device remains unchanged due to the RRC layer encryption of the first radio access network device, and the second radio access network device remains unchanged.
  • the RRC layer is not encrypted, so the terminal device does not need to perform key update when replacing the second radio access network device.
  • the first type of RRC signaling is encrypted by using the first key
  • the second type of RRC signaling is encrypted by using the second key.
  • the context management message sent by the first radio access network device to the second radio access network device carries the second key information used by the second type of RRC message.
  • the second key information is derived by the first radio access network device according to the key of the terminal device, and the key of the terminal device is the first access network device encrypting the first type of RRC signaling and data.
  • the key used.
  • the terminal device moves, when the second radio access network device needs to be replaced, since the first radio access network device encrypts the RRC layer, the first radio access network device remains unchanged, and the first radio access network remains unchanged.
  • the device has sent the encrypted information of the second type of RRC signaling to the second radio access network device, so the terminal device can replace the second radio access network device.
  • the terminal device derives a key used to encrypt the second type of RRC signaling according to the key of the terminal device.
  • the terminal device key is a key used by the terminal device to encrypt the first type of RRC signaling and data.
  • the specific derivation method is: the terminal device derives the key of the terminal device according to the serving cell identifier where the terminal device is located, and obtains a key used by the second radio access network device.
  • the first type of RRC signaling may be RRC signaling for communication between the first radio access network device and the terminal device, and the signaling may be encrypted signaling
  • the second type The RRC signaling may be RRC signaling for the second radio access network device to communicate with the terminal device, and the second type of RRC signaling may be unencrypted signaling.
  • the second radio access network device is configured by performing functional division on the RRC layer of the first radio access network device and the second radio access network device.
  • the RRC signaling required to be exchanged between the RRC layer and the terminal device is encrypted by the PDCP layer of the second radio access network device, so that the second radio access network device can separately configure the second radio access network in an encrypted manner.
  • the radio resource of the device at the same time, the RRC layer of the first radio access network can ensure that the bearer management signaling of the terminal device adopts a different encryption mechanism than the second radio access network. Therefore, different radio access network devices manage different RRC signaling, thereby ensuring reasonable configuration of radio resources and ensuring continuity of data transmission encryption. Therefore, the problem that the data processing of the terminal device is interrupted due to the replacement of the second radio access network device and the first radio access network device in the prior art can be solved.
  • FIG. 12 is a schematic structural diagram of a device for supporting data transmission involved in the foregoing method embodiment, which may be used to perform the function of the second wireless access device in the foregoing method embodiment, and the device may include a receiving module. , sending module and processing module. specific:
  • the receiving module 1201 is configured to receive an identifier of the terminal device that is sent by the terminal device.
  • the sending module 1202 is configured to send, to the first radio access network device, an identifier of the terminal device that is received by the receiving module.
  • the receiving module 1201 is further configured to receive configuration information of the first type of RRC signaling sent by the first radio access network device, where configuration information of the first type of RRC signaling is used by the first radio access network device to pass the device
  • the terminal device corresponding to the terminal identifier communicates.
  • the processing module 1203 is configured to determine configuration information of the second type of RRC signaling after the receiving module 1201 receives the configuration information of the first type of RRC signaling, where the configuration information of the second type of RRC signaling is used for the terminal The communication between the terminal devices corresponding to the identification is performed.
  • the sending module 1202 is configured to send, to the terminal device, the determined by the processing module 1203.
  • the second type of RRC signaling configuration information is sent to the terminal device, and the processing module 1203 determines configuration information of the second type of RRC signaling and configuration information of the first type of RRC signaling received by the receiving module 1201.
  • the processing module 1203 may be specifically configured to generate a second type of RRC signaling configuration information.
  • the processing module determines that the second type of RRC signaling configuration information of the 1203 includes that the second type of RRC signaling uses information of an encryption policy different from the first type of RRC signaling. , will not repeat them here.
  • the sending module is further configured to send an acknowledgment message to the terminal device, where the acknowledgment message includes update status indication information, where the update status indication information is used to indicate that the terminal device performs data transmission, and replaces the target cell based on cell reselection.
  • Another apparatus for supporting data transmission is similar to the embodiment shown in FIG. 12, except that the second radio access device does not need to generate a second type of RRC signaling.
  • the configuration information of the first type of RRC signaling and the configuration information of the second type of RRC signaling sent by the first radio access network device are directly received.
  • the receiving module can directly receive the configuration of the first type of RRC signaling.
  • Information and configuration information of the second type of RRC signaling; the sending module sends configuration information of the second type of RRC signaling or configuration information of the second type of RRC signaling and configuration information of the first type of RRC signaling to the terminal device.
  • the beneficial effects of this embodiment can also be referred to the beneficial effects of the above embodiments.
  • FIG. 12 only shows a simplified design of a device for supporting data transmission.
  • the device may be the second wireless in the above method embodiment.
  • the access network device may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all of the second radio access network devices implementing the present invention are within the scope of the present invention. .
  • FIG. 13 is a schematic structural diagram of a device for supporting data transmission involved in the foregoing method embodiment, which may be used to perform the function of the behavior of the first wireless access device in the foregoing method embodiment, and the device may include a receiving module. And send module. specific:
  • the receiving module 1301 is configured to receive, by the second radio access network device, an identifier of the terminal device, where the terminal identifier is sent by the terminal device to the second radio access network device;
  • the sending module 1302 is configured to send configuration information of the first type of RRC signaling to the second radio access network device, where the configuration information of the first type of RRC signaling is used by the second radio receiving network device to receive the first After the RRC signaling, the configuration information of the second type of RRC signaling is determined, and the configuration information of the first type of RRC signaling is used to communicate with the terminal device corresponding to the terminal identifier by using the second radio access network device, The configuration information of the second type of RRC signaling is used for communication between the second radio access network device and the terminal device corresponding to the terminal identifier.
  • the sending module 1302 is configured to send configuration information of the first type of RRC signaling to the terminal device.
  • the configuration information of the first type of RRC signaling sent by the sending module includes: the first type of RRC signaling adopts an encryption policy different from the second type of RRC signaling, and the specific encryption policy may refer to the foregoing method embodiment. , will not repeat them here.
  • the identifier of the terminal device received by the receiving module is allocated and notified by the first radio access network device for the terminal device; or is set by the core network.
  • the device is allocated and notified to the terminal device or stored by the terminal device itself.
  • Another apparatus for supporting data transmission is similar to the embodiment shown in FIG. 13 , except that the sending module sends the first type of RRC to the second radio access network device. Configuration information of signaling and configuration information of the second type of RRC signaling. This eliminates the need to receive measurements to determine the second type of RRC signaling.
  • FIG. 13 only shows a simplified design of a device for supporting data transmission.
  • the device may be the first radio access network device in the foregoing method embodiment, and may include any number of A transmitter, a receiver, a processor, a controller, a memory, a communication unit, etc., and all of the second radio access network devices embodying the present invention are within the scope of the present invention.
  • FIG. 14 is a schematic structural diagram of a device for supporting data transmission involved in the foregoing method embodiment, which may be used to perform the function of the terminal device in the foregoing method embodiment, and the device may include a receiving module, a sending module, and Processing module. specific:
  • the processing module 1401 is configured to obtain an identifier of the terminal device.
  • the sending module 1402 is configured to send, to the second radio access network device, the identifier of the terminal device acquired by the processing module 1401.
  • the receiving module 1403 is configured to receive configuration information of the second type of RRC signaling sent by the second radio access network device and configuration information of the first type of RRC signaling sent by the first radio access network device; or receive the second The configuration information of the second type of RRC signaling and the configuration information of the first type of RRC signaling sent by the radio access network device.
  • the configuration information of the first type of RRC signaling is used by the first radio access network device. Communicating with the terminal device corresponding to the terminal identifier acquired by the processing module by the second radio access network device; the configuration information of the second type of RRC signaling is used by the second radio access network device and the processing module
  • the terminal identifier corresponds to the communication between the terminal devices.
  • the first type of RRC configuration information and the second type of RRC configuration information received by the receiving module include different encryption policies for the first type of RRC signaling and the second type of RRC signaling.
  • For a specific encryption policy reference may be made to the foregoing method embodiments, and details are not described herein again.
  • the receiving module is further configured to receive an acknowledgement message sent by the second radio access network device, where the acknowledgement message includes update status indication information, where the update status indication information is used to indicate that the terminal device performs data transmission, and is based on The cell is reselected to replace the target cell.
  • the processing module is specifically configured to: receive the terminal device identifier that is allocated and notified by the first radio access network device; or receive the terminal device identifier that is allocated and notified by the core network device; or obtain the terminal device identifier that is stored by itself.
  • FIG. 14 only shows a simplified design of a device for supporting data transmission.
  • the device may be a terminal device in the above method embodiment, and may include any number of transmitters and receivers.
  • the processor, controller, memory, communication unit, etc., and all of the first radio access network devices embodying the present invention are within the scope of the present invention.
  • the embodiment of the present invention further provides a possible structural diagram of a system for supporting data transmission, where the system includes at least a core network device, at least one first radio access network device, at least one second radio access network device, and at least one terminal.
  • Equipment where:
  • the first radio access network device is configured to manage a connection between the terminal device and the core network device, and has a first type of RRC signaling processing function, where the first type of RRC signaling is used by the first radio access network device. Communicating with the terminal device through the second radio access network device;
  • the second radio access device is configured to manage radio resources between the second radio access network device and the terminal device, and has a second type of RRC signaling processing function, where the second type of RRC signaling is used for the second Communicating between the radio access network device and the terminal device;
  • the data transmission between the terminal device and the core network device needs to be processed by the second radio access network device and processed by the first radio access network device.
  • the first type of RRC signaling is cryptographic signaling
  • the second type of RRC signaling is unencrypted signaling
  • the first type of RRC signaling is encrypted by using a first key
  • the second type of RRC signaling The second key is encrypted, and the first key and the second key are different keys.
  • the first radio access network device further has a PDCP layer processing function, where the PDCP layer processing function is used to: encrypt or decrypt data transmitted between the terminal device and the core network device; or The first type of RRC signaling between the first radio access network devices is encrypted or decrypted.
  • the second radio access network device further has a PDCP layer processing function, where the PDCP layer processing function is used to encrypt the second type of RRC signaling between the terminal device and the second radio access network device or Decrypt.
  • FIG. 15 only shows a simplified design of the system supporting data transmission.
  • the system can include any number of first wireless access network devices, Two radio access network devices, terminal devices, and the like.
  • the first type of RRC signaling may be RRC signaling for communication between the first radio access network device and the terminal device
  • the signaling may be encrypted signaling
  • the second type of RRC signaling may be
  • the second type of RRC signaling may be unencrypted signaling.
  • the RRC layer and the terminal device of the second radio access network device are functionally divided by the RRC layer of the first radio access network device and the second radio access network device by using the technical solution provided by the embodiment of the present invention.
  • the RRC signaling that needs to be exchanged is encrypted by the PDCP layer of the second radio access network device, so that the second radio access network device can separately configure the radio resources of the second radio access network device in an encrypted manner.
  • the RRC layer of the first radio access network can ensure that the bearer management signaling of the terminal device adopts a different encryption mechanism than the second radio access network. Therefore, different radio access network devices manage different RRC signaling, thereby ensuring reasonable configuration of radio resources and ensuring continuity of data transmission encryption. Therefore, the problem that the data processing of the terminal device is interrupted due to the replacement of the second radio access network device and the first radio access network device in the prior art can be solved.
  • the terminal device by performing functional division on the RRC layer of the second radio access network device (which may also be referred to as a serving radio access network device), the terminal device is no longer restricted in the primary radio access at the same time.
  • the coverage of the network device and the secondary radio access network device because the second radio access network device uses the RRC layer, can directly communicate with the terminal device, thereby ensuring that the first radio access network device remains unchanged, and only transforms The second radio access network device still maintains a mechanism for continuous data transmission.
  • the first radio access network device involved in the embodiment of the present invention is required to be described.
  • the second radio access network device and the terminal device may be wired, or may be connected by using a wireless connection, or a combination of a wired connection and a wireless connection.
  • the present invention is not limited in specific terms.
  • the present invention includes, without limitation, the two protocol stack architectures, and the manner in which the RRC layer is established in communication with the terminal device in the second radio access network device,
  • the scope of protection of the present invention includes other protocol stack architectures or variations not enumerated herein.
  • the application scenario of the present invention may be a light connection or a dual connection scenario
  • the example is only based on the example of the current communication technology development, and in the subsequent evolution versions of various communication technologies, As long as the second radio access network device cannot communicate with the terminal device, the manner in which the RRC layer is set up in the second radio access network device and communicates with the terminal device is within the protection scope of the present invention.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage well known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the user equipment. Of course, the processor and storage medium can also be used as points.
  • the vertical component exists in the user device.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

Landscapes

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

Abstract

本发明实施例提供了一种支撑数据传输的方法，通过在第二无线接入网设备的协议栈中设置了RRC层，第二无线接入网设备与终端设备之间的数据传输可以使用第二无线接入网设备的RRC层配置与终端设备之间的数据传输通道，从而使终端设备与第二无线接入网设备之间进行数据传输不需要经过第一无线接入网转发，即无需变更第一无线接入网设备，第二无线接入网设备与终端设备之间可以直接进行数据传输。采用这种通信方式保证了终端设备数据处理流程的连续性，提高工作效能。

Description

一种支撑数据传输的方法、装置及系统 技术领域
本发明涉及通信技术领域，尤指一种支撑数据传输方法、装置及系统。
背景技术
第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)标准正在讨论轻连接(Light Connection)技术。终端设备可以在第一无线接入网(Residential Access Network，RAN)设备指示下进入轻连接态。该轻连接态是介于无线资源控制(Radio Resource Control，RRC)连接态和空闲(Idle)态之间的一种状态。进入轻连接态的终端设备释放RRC连接，但和该第一无线接入网设备均保存连接信息。同时，该第一无线接入网设备为该终端设备分配一个上下文标识。
进入轻连接态的终端设备可以基于小区重选自主选择驻留小区，并将该上下文标识发送给该驻留小区中且为该终端设备服务的第二无线接入网设备。该第二无线接入网设备将该终端设备的上下文标识发送给该第一无线接入网设备，以便该第二无线接入网从该第一无线接入网设备获取该终端设备的上下文信息。
如图1所示，由于终端设备的上下文信息存储在第一无线接入网设备，该上下文信息包含该第一无线接入网设备与该终端设备之间的连接配置参数。当该终端设备有数据传输需求时，可以使用保存的该上下文信息恢复该终端设备与该第一无线接入网设备之间的RRC连 接，从而避免了RRC连接重建过程中的信令负荷。
但是，每当终端设备移动需要更换第二无线接入网设备时，终端设备就需要执行一次上下文信息转移和S1切换，还需要更换一次第一无线接入网设备。由于，第一无线接入网设备更换导致终端设备密钥更新，从而使终端设备数据处理流程中断，造成不必要的信令开销。
发明内容
本发明提供了一种数据通信方法和装置，用于在第一无线接入网设备不变的前提下，保证终端设备和第二无线接入网设备之间的有效通信。
第一方面，本申请的实施例提供了一种支撑数据传输的方法，包括：第二无线接入网设备接收终端设备发送的该终端设备的标识，并向第一无线接入网设备发送该终端设备的标识，接收第一无线接入网设备发送的第一类RRC信令的配置信息，确定第二类RRC信令的配置信息，向该终端设备发送第二类RRC信令的配置信息或者第二类RRC信令的配置信息和第一类RRC信令的配置信息，其中，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信，该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。
采用本方案，可以使使终端设备与第二无线接入网设备之间进行数据传输不需要经过第一无线接入网转发，即无需变更第一无线接入网设备，第二无线接入网设备设立的RRC层，可以与终端设备直接进 行数据传输。采用这种通信方式保证了终端设备数据处理流程的连续性，提高工作效能。
第二方面，本申请的实施例提供了一种支撑数据传输的方法，包括：第二无线接入网设备向第一无线接入网设备转发终端设备发送的终端设备的标识，接收第一无线接入网设备发送第一类RRC信令的配置信息和第二类RRC信令的配置信息，向终端设备发送第一类RRC信令的配置信息和第二类RRC信令的配置信息，或者，向终端设备发送第二类RRC信令的配置信息，其中，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信；该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。有益效果可以参考上一个实施例。
在上述本申请的实施例中，在一个可能的设计中，该第二无线接入网设备确定第二类RRC信令的配置信息包括：生成第二类RRC信令配置信息。第二类RRC信令由第二无线接入网设备自身生成，避免第一无线接入网设备向第二无线接入网设备传输第二类RRC信令的配置信息，可以节省传输资源。
在上述本申请的实施例中，在一个可能的设计中，该第二类RRC信令配置信息包括：第二类RRC信令采用与第一类RRC信令不同的加密策略。具体包括：该第一类RRC信令采用该终端设备密钥进行加密，该第二类RRC信令不进行加密处理；或者，该第一类RRC信令采用第一密钥进行加密，该第二类RRC信令采用第二密钥进行加密，该第一 密钥与第二密钥不同。采用不同的加密策略，可以使不同的无线接入网设备管理不同的RRC信令，并且不同的无线接入网设备的RRC信令采用不同的加密机制，既保证无线资源合理配置，又保证无线承载的传输加密连续性。
在上述本申请的实施例中，在另一个可能的设计中，该方法还包括：该第二无线接入网设备向终端设备发送确认消息，该确认消息包括更新状态指示信息，该更新状态指示信息用于指示该终端设备进行数据发送，并基于小区重选更换目标小区。可以避免终端设备转入正常连接态再发送数据，提高终端设备的工作性能。
在另一个可能的设计中，该终端设备的标识为该第一无线接入网设备分配并通知给终端设备，或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
第三方面，本申请的实施例提供了一种支撑数据传输的方法，包括：第一无线接入网设备接收第二无线接入网设备发送的终端设备的标识，该终端标识为终端设备发送给该第二无线接入网设备的,向该第二无线接入网设备发送第一类RRC信令的配置信息，该第一类RRC信令的配置信息用于该第二无线接入网设备收到第一类RRC信令后，确定第二类RRC信令的配置信息,向终端设备发送第一类RRC信令的配置信息；其中，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信，该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。有益效果可以参考前 述实施例。
第四方面，本申请的实施例提供了一种支撑数据传输的方法，包括：第一无线接入网设备接收第二无线接入网设备发送的终端设备的标识，该终端标识为终端设备发送给该第二无线接入网设备的,向该第二无线接入网设备发送第一类RRC信令的配置信息和第二类RRC信令的配置信息，该第一类RRC信令的配置信息用于该第二无线接入网设备收到第一类RRC信令后，确定第二类RRC信令的配置信息,向终端设备发送第一类RRC信令的配置信息；其中，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信，该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。有益效果可以参考前述实施例。
在上述本申请的第三方面和第四方面所示的实施例中，在一个示例中，该第一类RRC信令的配置信息包括：该第一类RRC信令采用与第二类RRC信令不同的加密策略。具体包括该第一类RRC信令采用该终端设备密钥进行加密，该第二类RRC信令不进行加密处理；或者，该第一类RRC信令采用第一密钥进行加密，该第二类RRC信令采用第二密钥进行加密，该第一密钥与第二密钥不同。采用不同的加密策略，使得不同的无线接入网设备管理不同的RRC信令，并且不同的无线接入网设备的RRC信令采用不同的加密机制，既保证无线资源合理配置，又保证无线承载的传输加密连续性。
在上述本申请的第三方面和第四方面所示的实施例中，在另一个示例中，该终端设备的标识由该第一无线接入网设备为终端设备分配并通知的；或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
第五方面，本申请的实施例提供了一种支撑数据传输的方法，包括：终端设备获取该终端设备的标识，向第二无线接入网设备发送该终端设备的标识，接收第二无线接入网设备发送的第二类RRC信令的配置信息与第一无线接入网设备发送的第一类RRC信令的配置信息；或，接收第二无线接入网设备发送的第二类RRC信令的配置信息和第一类RRC信令的配置信息，其中，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信；该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。
在一个示例中，该终端设备接收的第一类RRC信令的配置信息与第二类RRC信令的配置信息中规定第一类RRC信令与第二类RRC信令采用不同的加密策略。具体包括：该第一类RRC信令采用该终端设备密钥进行加密，该第二类RRC信令不进行加密处理；或者，该第一类RRC信令采用第一密钥进行加密，该第二类RRC信令采用第二密钥进行加密，该第一密钥与第二密钥不同。采用不同的加密策略，使得不同的无线接入网设备管理不同的RRC信令，并且不同的无线接入网设备的RRC信令采用不同的加密机制，既保证无线资源合理配置，又保证无线承载的传输加密连续性。
在另一个示例中，该方法还包括：该终端设备接收该第二无线接入网设备发送的确认消息，该确认消息包括更新状态指示信息，该更新状态指示信息用于指示该终端设备进行数据发送，并基于小区重选更换目标小区。
在另一个示例中，该终端设备获取该终端设备的标识包括：接收该第一无线接入网设备分配并通知的终端设备标识；或者接收核心网设备分配并通知的终端设备标识；或者获取自身存储的终端设备标识。
第六方面，本发明实施例提供了一种支撑数据传输的装置，该装置具有实现上述方法实施例中第二无线接入网设备行为的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相应的模块。
在一个可能的设计中，该一种支撑数据传输的装置包括接收器、发送器和处理器，接收器用于接收终端设备的标识以及第一类RRC信令的配置信息，该处理器确定第二类RRC信令的配置信息，该发射器用于支持第一无线接入网设备和UE的通信，向第一无线接入网设备发送终端设备标识以及向终端设备发送发送上述方法中所涉及的配置信息。
第七方面，本发明实施例提供了另一种支撑数据传输的装置，该装置具有实现上述方法实施例中第一无线接入网设备行为的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相应的模块。
在一个可能的设计中，该另一种支撑数据传输的装置包括接收器和发送器，接收器用于接收终端设备的标识，该发射器用于支持第二无线接入网设备和UE的通信，向第二无线接入网设备和终端设备发送上述方法中所涉及的配置信息。
第八方面，本发明实施例提供了另一种支撑数据传输的装置，该装置具有实现上述方法实施例中终端设备行为的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相应的模块。
在一个可能的设计中，该一种支撑数据传输的装置包括处理器、发送器和接收器，处理器用于获取该终端设备的标识，该发射器用于向第二无线接入网设备发送该终端设备的标识，该接收器用于接收上述方法中所涉及的配置信息。
第九方面，本申请实施例还提供了一种支撑数据传输的系统，该系统至少包括核心网设备、至少一个第一无线接入网设备、至少一个第二无线接入网设备和至少一个终端设备，该第一无线接入网设备与核心网设备通过第一接口进行通信，该第一无线接入网设备与第二无线接入网设备通过第二接口进行通信，该第二无线接入网设备与终端设备通过第三接口进行通信，其中：该第一无线接入网设备用于管理终端设备与核心网设备之间的连接，并且具备第一类RRC信令处理功能，该第一类RRC信令用于该第一无线接入网设备通过第二无线接入网设备与该终端设备进行通信；该第二无线接入设备用于管理该第二无线接入网设备与终端设备之间的无线资源，并且具备第二类RRC信 令处理功能，该第二类RRC信令用于该第二无线接入网设备与该终端设备之间进行通信；该终端设备和该核心网设备之间的数据传输需要经过第二无线接入网设备进行处理和第一无线接入网设备处理。
在一个示例中，该第一类RRC信令为加密信令，该第二类RRC信令为不加密信令；或者该第一类RRC信令采用第一密钥加密，该第二类RRC信令采用第二密钥加密，该第一密钥和第二密钥为不同的密钥。采用不同的加密策略，使得不同的无线接入网设备管理不同的RRC信令，并且不同的无线接入网设备的RRC信令采用不同的加密机制，既保证无线资源合理配置，又保证无线承载的传输加密连续性。
在另一个示例中，该第一无线接入网设备还具备PDCP层处理功能，该PDCP层处理功能用于：对终端设备和该核心网设备之间传输的数据进行加密或解密；或者对终端设备和第一无线接入网设备之间的第一类RRC信令进行加密或解密。
在另一个示例中，该第二无线接入网设备还具备PDCP层处理功能，该PDCP层处理功能用于：对终端设备与第二无线接入网设备之间的第二类RRC信令进行加密或解密。
上述实施例所提供的支撑数据传输的方法、装置和系统，通过在第二无线接入网设备的协议栈中设置了RRC层，第二无线接入网设备与终端设备之间的数据传输可以使用第二无线接入网设备的RRC层配置与终端设备之间的数据传输通道，从而使终端设备与第二无线接入网设备之间进行数据传输不需要经过第一无线接入网转发，即无需变更第一无线接入网设备，第二无线接入网设备与终端设备之间可以 直接进行数据传输。采用这种通信方式保证了终端设备数据处理流程的连续性，提高工作效能。
另外，本申请实施例通过对RRC信令进行划分，使得不同的无线接入网设备管理不同的RRC信令，并且不同的无线接入网设备的RRC信令采用不同的加密机制，既保证无线资源合理配置，又保证无线承载的传输加密连续性。
进一步，本申请实施例通过对第二无线接入网设备的PDCP层进行加密，使得第二无线接入网设备可以单独以加密方式配置第二无线接入网设备的无线资源，同时，第一无线接入网的RRC层可以保证终端设备的承载管理信令采用与第二无线接入网不同的加密机制。从而使不同的无线接入网设备管理不同的RRC信令，因而可以解决现有技术中，由于第二无线接入网设备和第一无线接入网设备更换，导致终端设备数据处理中断的问题。
附图说明
图1为现有技术中处于轻连接状态的终端设备数据传输的流程示意图；
图2为本发明实施例中处于轻连接状态的终端设备数据传输的流程示意图；
图3为本发明实施例所提供的一种支撑数据传输方法的流程示意图；
图4为本发明实施例所提供的一种支撑数据传输方法的流程示意 图；
图5为本发明实施例所提供的一种支撑数据传输方法的流程示意图；
图6为本发明实施例所提供的一种协议栈的结构示意图；
图7为本发明实施例所提供的一种支撑数据传输方法的流程示意图；
图8为本发明实施例所提供的另一种支撑数据传输方法的流程示意图；
图9为本发明实施例所提供的另一种支撑数据传输方法的流程示意图；
图10为本发明实施例所提供的另一种支撑数据传输方法的流程示意图；
图11为本发明实施例所提供的另一种协议栈的结构示意图；
图12为本发明实施例所提供的一种支撑数据传输装置的结构示意图；
图13为本发明实施例所提供的另一种支撑数据传输装置的结构示意图；
图14为本发明实施例所提供的另一种支撑数据传输装置的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方 案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
如图2所示，本发明实施例所应用的通信系统可以为全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)，及其他应用正交频分(OFDM)技术的无线通信系统等。本发明实施例描述的系统架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案，并不构成对于本发明实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本发明实施例提供的技术方案对于类似的技术问题，同样适用。
在本发明实施例中所涉及的无线接入网设备可用于为终端设备提供无线通信功能。该无线接入网设备可以包括各种形式的宏基站，微基站(也称为小站)，中继站，接入点等。该无线接入网设备可以是GSM或CDMA中的基站(Base T接入网sceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型 基站(Evolutional Node B，eNB或e-NodeB)，以及可以是5G网络中对应的设备gNB。为方便描述，本发明所有实施例中，上述为终端设备提供无线通信功能的装置统称为无线接入网设备。
在本发明实施例中，该终端设备也可称之为用户设备(User Equipment，UE)、移动台(Mobile Station，MS)、移动终端(Mobile Terminal)等，该终端设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，例如，终端设备可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等，例如，终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。本发明实施例中不做具体限定。
在本发明实施例中，该核心网设备控制一个或多个无线接入网设备，可以对系统中的资源进行统一调度，也可以给终端设备配置资源等。例如，该无线接入网设备可以为UMTS系统中的Node B和RNC，该核心网设备可以为SGSN和GGSN。又例如，该无线接入网设备可以为LTE系统中的eNB，则该核心网设备可以为MME。再例如，该核心网设备可以为无线网络跨制式协同控制器等，在本发明实施例中不作具体限定。
本发明实施例中所涉及的无线接入网设备可以至少包括第一无线接入网设备(例如主无线接入网设备)和第二无线接入网设备(例如辅无线接入网设备)。其中，第一无线接入网设备可以指示该终端设备进入轻连接状态或双连接状态，并为该终端设备分配上下文标 识。处于轻连接状态或双连接状态的终端设备存储上下文，并执行小区重选的移动性。
示例性的，该轻连接状态可以是无线资源控制(Radio Resource Control，RRC)连接态的子状态，也可以是空闲(idle)态的增强状态，还可以是独立的状态，本发明实施例对该轻连接状态的名称和形态均不做具体限定。比如轻连接状态还可以称为非激活态，去激活态，低活动态或低开销态等。
示例性的，该双连接状态是终端设备同时连接两个无线接入网设备进行数据传输的技术。处于双连接状态的终端设备可以分别与主无线接入网设备(比如第一无线接入网设备)和辅无线接入网设备(比如第二无线接入网设备)连接，要求终端设备同时在主无线接入网设备和辅无线接入网设备的覆盖范围内。网络侧仅主无线接入网设备具有RRC层，主无线接入网设备通过自身的RRC层来添加和删除辅无线接入网设备。辅无线接入网设备无法和终端设备直接进行RRC管理，如果辅无线接入网设备需要作RRC资源修改，则辅无线接入网设备通知主无线接入网设备，由主无线接入网设备生成RRC消息，再通过该RRC消息通知终端设备进行资源修改。
通过以上分析可知，当终端设备处于轻连接状态或双连接状态，由于终端设备移动每更换一次第二无线接入网设备，都需要执行一次上下文转移和S1切换，并更换一次第一无线接入网设备，从而导致终端设备密钥更新，使终端设备数据处理流程中断，造成不必要的信令开销。因此，在终端设备移动过程中，如何保证第一无线接入网设 备保持不变，仅变换第二无线接入网设备，仍然保持数据连续传输的机制，是本发明有待解决的技术问题。
基于上述技术问题，本发明实施例提供的支撑数据传输的方法，通过对第一无线接入网设备与第二无线接入网设备的RRC层进行功能划分，使终端设备可以与该第二无线接入网设备建立RRC连接，从而在与终端设备进行数据传输的过程中，只需要变更第二无线接入网设备，不需要变更第一无线接入网设备，从而保证及时获取有效的传输资源进行数据传输，提高工作效能。
图3为本发明实施例提供的一种支撑数据传输的方法，包括：
301、第二无线接入网设备接收终端设备发送的该终端设备的标识。
302、该第二无线接入网设备向第一无线接入网设备发送该终端设备的标识。
示例性的，该终端设备的标识可以用来请求第一无线接入网设备生成第类一RRC信令。
303、该第二无线接入网设备接收第一无线接入网设备发送的第一类RRC信令的配置信息，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信。
304、该第二无线接入网设备确定第二类RRC信令的配置信息，该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。
305、该第二无线接入网设备向该终端设备发送第二类RRC信令的配置信息或者第二类RRC信令的配置信息和第一类RRC信令的配置信息。
示例性的，该第二无线接入网设备确定第二类RRC信令包括：该第二无线接入网设备生成第二类RRC信令配置信息。
示例性的，该第二无线接入网设备确定第二类RRC信令包括：该第二无线接入网设备生成第二类RRC信令配置信息。
示例性的，该第二类RRC信令采用与第一类RRC信令不同的加密策略包括：该第一类RRC信令采用该终端设备密钥进行加密，该第二类RRC信令不进行加密处理；或者，该第一类RRC信令采用第一密钥进行加密，该第二类RRC信令采用第二密钥进行加密，该第一密钥与第二密钥不同。
示例性的，该方法还包括：该第二无线接入网设备向终端设备发送确认消息，该确认消息包括更新状态指示信息，该更新状态指示信息用于指示该终端设备进行数据发送，并基于小区重选更换目标小区。
示例性的，该终端设备的标识为该第一无线接入网设备分配并通知给终端设备，或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
本发明实施例提供的支撑数据传输的方法，通过在第二无线接入网设备的协议栈中设置了RRC层，第二无线接入网设备可以采用自身的RRC层配置与终端设备之间的数据传输通道，从而使终端设备与第 二无线接入网设备之间进行数据传输不需要经过第一无线接入网，即无需变更第一无线接入网设备，第二无线接入网设备与终端设备之间可以直接进行数据传输，采用这种通信方式保证了终端设备数据处理流程的连续性，提高工作效能。
图4为本发明实施例提供的另一种支撑数据传输的方法，包括：
401、第一无线接入网设备接收第二无线接入网设备发送的终端设备的标识，该终端标识为终端设备发送给该第二无线接入网设备的。
402、该第一无线接入网设备向该第二无线接入网设备发送第一类RRC信令的配置信息，该第一类RRC信令的配置信息用于该第二无线接接收网设备收到第一类RRC信令后，确定第二类RRC信令的配置信息。
其中，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信，该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。
403、该第一无线接入网设备向终端设备发送第一类RRC信令的配置信息。
示例性的，该第一类RRC信令的配置信息包括：该第一类RRC信令采用与第二类RRC信令不同的加密策略。
示例性的，该第一类RRC信令采用与第二类RRC信令不同的加密策略包括：该第一类RRC信令采用该终端设备密钥进行加密，该第二 类RRC信令不进行加密处理；或者，该第一类RRC信令采用第一密钥进行加密，该第二类RRC信令采用第二密钥进行加密，该第一密钥与第二密钥不同。
示例性的，该终端设备的标识由该第一无线接入网设备为终端设备分配并通知的；或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
该实施例的有益效果请参照图3所示实施例的有益效果。
图5为本发明实施例提供的一种支撑数据传输的方法，包括：
501、终端设备获取该终端设备的标识。
502、该终端设备向第二无线接入网设备发送该终端设备的标识。
503、该终端设备接收第二无线接入网设备发送的第二类RRC信令的配置信息与第一无线接入网设备发送的第一类RRC信令的配置信息；或，接收第二无线接入网设备发送的第二类RRC信令的配置信息和第一类RRC信令的配置信息。
其中，该第一类RRC信令的配置信息用于该第一无线接入网设备通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信；该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。
示例性的，该终端设备接收的第一类RRC信令的配置信息与第二类RRC信令的配置信息中规定第一类RRC信令与第二类RRC信令采用不同的加密策略。
示例性的，该第一类RRC信令与第二类RRC信令采用不同的加密 策略包括：该第一类RRC信令采用该终端设备密钥进行加密，该第二类RRC信令不进行加密处理；或者，该第一类RRC信令采用第一密钥进行加密，该第二类RRC信令采用第二密钥进行加密，该第一密钥与第二密钥不同。
示例性的，该方法还包括：该终端设备接收该第二无线接入网设备发送的确认消息，该确认消息包括更新状态指示信息，该更新状态指示信息用于指示该终端设备进行数据发送，并基于小区重选更换目标小区。
示例性的，该终端设备获取该终端设备的标识包括：接收该第一无线接入网设备分配并通知的终端设备标识；或者接收核心网设备分配并通知的终端设备标识；或者获取自身存储的终端设备标识。
该实施例的有益效果请参照图3所示实施例的有益效果。
如图6所示，该图中包括了终端设备的协议栈结构、第一无线接入网设备的协议栈结构和第二无线接入网设备的协议栈结构。具体的：
第一无线接入网设备：该第一无线接入网设备可以用于管理终端设备与核心网设备之间的连接，并且第一无线接入网设备具备分组数据汇聚层协议(Packet Data Convergence Protocol，PDCP)层处理功能和RRC信令处理功能。该第一无线接入网设备中的RRC层和终端设备进行RRC信令交互。其中，第一无线接入网设备的RRC信令可以称为第一类RRC消息，可以用来管理终端设备的无线承载参数。
·第二无线接入网设备：该第二无线接入网设备具有RRC信令处理功能，并且还具有无线链路控制(Radio Link Control，RLC)层处理功能、媒体接入控制(Media Access Control，MAC)层处理功能或物理层(physical layer)至少一种处理功能。其中，第二无线接入网的RRC层和终端设备的RRC层之间可以进行RRC信令交互。其中，第二无线接入网节点的RRC信令可以称为第二类RRC消息，用来管理终端设备与第二无线接入网设备之间的无线资源。
终端设备：该终端设备的数据通过第二无线接入网设备的至少一个RLC层处理功能、MAC层处理功能或PHY层处理功能处理后，再经过第一无线接入网设备的PDCP层功能处理后发送至核心网设备。
需要特别说明的是，第一无线接入网设备、第二无线接入网设备和终端设备之间可以通过无线连接、有线连接或者有线连接和无线连接的组合方式，对此，本发明人不做具体的限制，只要能实现终端设备与第二无线接入网设备直接进行数据传输都属于本发明的保护范围。
进入轻连接状态或双连接状态的终端设备在改变驻留的小区时，通过对第一无线接入网设备与第二无线接入网设备的RRC层进行功能划分，不需要该第一无线接入网设备作出切换指示，而是根据移动情况基于小区重选来选择驻留的小区。该终端设备在该驻留的小区中由第二无线接入网设备提供服务。该终端设备在有数据传输需求时， 可以与该第二无线接入网设备建立RRC连接，而在与终端设备进行数据传输的过程中，只需要变更第二无线接入网设备，不需要变更第一无线接入网设备，从而保证及时获取有效的传输资源进行数据传输，提高工作效能。
图7所示的支撑数据传输的方法可以基于图6所示的协议栈架构，如图7所示，该方法可以包括以下步骤：
701、终端设备向当前的第二无线接入网设备发送终端设备标识。
示例性的，该终端设备标识可以由第一无线接入网设备分配或者由核心网设备分配，并通知给终端设备；或者是终端设备自身存储的终端设备标识。无论终端设备采用哪种方式获取终端设备标识，都属于本发明实施例所要求保护的范围。
702、第二无线接入网设备收到该终端设备标识后，将该终端设备标识发送给该第一无线接入网设备。
示例性的，步骤702中，该第二无线接入网设备向第一无线接入网设备发送连接恢复请求，该连接恢复请求携带终端设备的标识。
在一个示例中，该终端设备标识发送给该第一无线接入网设备之前，该第二无线接入网设备根据该终端设备标识确定该第一无线接入网设备。比如，该终端设备标识中包含有第一无线接入网设备标识信息，该第二无线接入网设备根据该第一无线接入网设备标识信息确定该第一无线接入网设备。
703、第一无线接入网设备向第二无线接入网设备发送第一无线接入网上下文管理消息，该上下文管理消息包括第一无线接入网设备 为终端设备配置的第一类RRC信令的配置信息和第二类RRC信令的配置信息。
该第一无线接入网设备和该终端设备均保存该终端设备的上下文信息。该上下文管理消息包含该第一无线接入网设备和该终端设备之间的连接配置参数。当该终端设备有数据传输需求时，可以使用保存的该上下文管理消息恢复与该第一无线接入网设备之间的RRC连接，从而避免了RRC连接重建过程中的信令负荷。
示例性的，第一类RRC信令可以用于该第一无线接入网设备通过第二无线接入网设备与该终端设备进行通信。具体的该第一类RRC信令可以是对承载管理的RRC信令、测量管理的RRC信令或者能力管理的RRC信令。上述仅是为了理解本发明技术方案所举的例子，本发明包括并不限于此。
示例性的，第二类RRC信令可以用于第二无线接入网设备与终端设备进行通信。具体的，第二类RRC信令可以为用来管理第二无线接入网设备的物理无线资源RRC信令。上述仅是为了理解本发明技术方案所举的例子，本发明包括并不限于此。
示例性的，当该第二无线接入网设备与终端设备之间通信时，第二类RRC信令可以直接下发给RLC层处理，不再经过PDCP层处理。
704、第二无线接入网设备接收第一无线接入网设备发送的上下文管理消息后，向终端设备发送的确认消息，该确认消息携带第一类RRC信令的配置信息和第二类RRC信令的配置信息。
示例性的，第二无线接入网设备向终端设备发送的确认消息还包 含更新状态指示信息，用于指示终端设备更新的状态，该更新的状态可以是指终端设备可以发送数据，并可以基于小区重选更换目标小区。
示例性的，该确认消息还包括保持第一无线接入网设备不切换的指示，用于指示第二无线接入网设备不切换第一无线接入网设备。
705、终端设备接收该确认消息，并根据该确认消息为终端设备进行第一类RRC信令的配置和第二类RRC信令的配置。
706、第二无线接入网设备根据第二类RRC信令的配置信息向终端设备发送第二类RRC信令。
707、第一无线接入网设备根据第一类RRC信令配置的信息向终端设备发送第一类RRC信令。
其中，需要说明是，步骤706与707执行不分先后。
在一个示例中，第一类RRC信令也可以由第二无线接入网设备生成后，发送给第一无线接入网设备，然后再由第一无线接入网设备在步骤707发送给终端设备。
在另一个示例中，第二无线接入网设备接收第一无线接入网设备发送的第一类RRC信令配置信息，该第二无线接入网设备使用该第一类RRC信令配置传输第一类RRC信令给用户设备；第二无线接入网设备接收并使用第二类RRC信令配置传输的第二类RRC信令，第二无线接入网设备自行进行第二类RRC信令处理。
可选的，708、第一无线接入网设备确定改变终端设备的状态，向终端设备发送状态改变命令，指示终端设备新的状态，并将终端设 备状态改变通知给第二无线接入网设备。
示例性的，终端设备新的状态可以包括：不保存终端设备的上下文，基于小区重选选择目标小区，不能进行数据发送的状态。
示例性的，终端设备新的状态可以包括：保存终端设备的上下文，基于小区重选选择目标小区，不能进行数据发送的状态。
本发明实施例提供的支撑数据传输方法，通过在第二无线接入网设备的协议栈中设置了RRC层，第二无线接入网设备可以采用自身的RRC层配置与终端设备之间的数据传输通道，从而使终端设备与第二无线接入网设备之间进行数据传输不需要经过第一无线接入网，即无需变更第一无线接入网设备，第二无线接入网设备与终端设备之间可以直接进行数据传输，采用这种通信方式保证了终端设备数据处理流程的连续性，提高工作效能。
如图8所示，为本发明实施例提供的另一种支撑数据传输的方法，该实施例中的步骤801-803与图4所示实施例中的步骤701-703类似，步骤808-809与图7中的706-707类似，不同之处在于：
804、第二无线接入网设备接收第一无线接入网设备发送的上下文管理信息后，向终端设备发送确认消息，该确认消息携带二类RRC信令的配置信息。
805、终端设备接收该确认消息，并根据该确认消息进行第二类RRC信令的配置。
806、第一无线接入网设备向终端设备发送第一类RRC信令的配置信息。
807、终端设备进行第一类RRC信令的配置。
示例性的，步骤804-805与806-807的执行不分先后。
示例性的，终端设备也可以接收第一类RRC信令的配置信息和第二类RRC信令的配置信息后，再进行第一类RRC信令配置和第二类RRC信令配置。
示例性的，步骤806也可以执行在收到终端设备标识后，即第一无线接入网设备可以向终端设备标识所对应的终端设备发送第一类RRC信令的配置信息，用于终端设备进行第一类RRC信令的配置。
该实施列的有益效果请参照图7所示的实施例的有益效果，再此不在赘述。
如图9所示，为本发明实施例提供的另一种支撑数据传输的方法，该实施例中的步骤901-902与图7所示实施例中的步骤701-702类似，步骤906-908与图7中的705-707类似，不同之处在于：
903、第一无线接入网设备向第二无线接入网设备发送第一无线接入网上下文管理消息，该上下文管理消息包携带第一无线接入网设备为终端设备配置的第一类RRC信令的配置信息。
904、第二无线接入网设备接收第一无线接入网设备发送的上下文管理消息后，生成第二类RRC信令的配置信息。
905、该第二无线接入网设备向终端设备发送确认消息，该确认消息中携带第一类RRC信令的配置信息和第二类RRC信令的配置信息。
该实施列的有益效果请参照图7所示的实施例的有益效果，再此 不在赘述。
如图10所示，为本发明实施例提供的另一种支撑数据传输的方法，该实施例与图9所示的实施例类似，不同之处在于，步骤1005、第二无线接入网向终端设备发送的确认消息中携带第二类RRC信令的配置信息，而第一类RRC信令的配置信息由第一无线接入网设备通知给终端设备。该实施例的有益效果也与图9实施例类似，在此不再赘述。
图11所示的协议栈结构与图9所示的协议栈结构类似，不同之处在于该图中终端设备的协议栈架构包括S-RRC(serving RRC，服务RRC)层和PDCP层可以分别和第二无线接入网设备的协议栈架构中的S-RRC层与PDCP层进行通信。具体的：
第二无线接入网设备：具有S-RRC信令处理功能和处理该S-RRC信令的PDCP功能，并且还具有RLC层处理功能、MAC层处理功能或PHY层至少一种处理功能。其中，第二无线接入网设备的S-RRC层和终端设备的S-RRC层之间进行RRC信令交互。第二无线接入网设备的RRC信令被定义为第二类RRC消息，用来管理终端设备与第二无线接入网设备之间的无线资源。进一步，第二无线接入网设备采用单独的PDCP层进行加密，加密方式可以采用与第一无线接入网设备不同的加密方式。
终端设备：终端设备的A-RRC(anchor-RRC)和S-RRC层可以分别与第一无线接入网设备和第二无线接入网设备进行通信。示例性 的，一方面，终端设备通过自身中设置的A-RRC层将第一类RRC信令发送给第一无线接入网设备A-RRC层，通过自身设置的S-RRC层将第二类RRC信令发送给第二无线接入网设备的S-RRC层；另一方面终端设备将数据通过第二无线接入网设备的RLC层处理功能、MAC层处理功能或PHY层至少一种处理功能处理后，再经由第一无线接入网设备的PDCP层处理后发送至核心网。
上述图7至图10任一实施例的方法，也可以基于图11所示的协议栈架构，进行数据传输，具体通过对RRC信令进行划分，使得不同的无线接入网设备管理不同的RRC信令，并且不同的无线接入网设备的RRC信令采用不同的加密机制，既保证无线资源合理配置，又保证无线承载的传输加密连续性。
示例性的，当该第一无线接入网设备与终端设备之间进行通信时，第一类RRC信令可以下发给第一无线接入网设备的PDCP层处理，由该PDCP层进行加密处理后下发送给第二无线接入网设备，由第二无线接入网设备进行RLC层和MAC层以及PHY层处理后发送给用户设备。
示例性的，第一类RRC信令和第二类RRC信令采用不同的密钥进行加密。如第一类RRC信令采用密钥进行加密，第二类RRC信令不加密。当终端设备移动时，需要更换第二无线接入网设备时，由于第一无线接入网设备的RRC层加密，所以第一无线接入网设备保持不变，而第二无线接入网设备的RRC层不加密，所以终端设备在更换第二无线接入网设备时不需要进行密钥更新。
示例性的，第一类RRC信令采用第一密钥进行加密，第二类RRC信令采用第二密钥进行加密。第一无线接入网设备向第二无线接入网设备发送的上下文管理消息中携带第二类RRC消息使用的第二密钥信息。
示例性的，该第二密钥信息由第一无线接入网设备根据终端设备的密钥衍生的，而终端设备的密钥是第一接入网设备加密第一类RRC信令和数据所使用的密钥。当终端设备移动时，需要更换第二无线接入网设备时，由于第一无线接入网设备的将RRC层加密，所以第一无线接入网设备保持不变，而第一无线接入网设备已经将第二类RRC信令的加密信息发送给第二无线接入网设备，所以终端设备可以更换第二无线接入网设备。
示例性的，该终端设备根据该该终端设备的密钥衍生获得加密第二类RRC信令使用的密钥。该终端设备密钥是该终端设备加密该第一类RRC信令和数据所使用的密钥。具体衍生方式为，该终端设备将该终端设备的密钥根据终端设备所在的服务小区标识进行衍生，获得第二无线接入网设备使用的密钥。
示例性的，从前述的描述可以获知，第一类RRC信令可以为第一无线接入网设备和终端设备之间进行通讯的RRC信令，该信令可以为加密信令，第二类RRC信令可以为第二无线接入网设备与终端设备进行通信的RRC信令，第二类RRC信令可以为不加密信令。采用本发明实施例所提供的技术方案，通过对第一无线接入网设备和第二无线接入网设备的RRC层进行功能划分，对第二无线接入网设备 的RRC层和终端设备之间的需要交互的RRC信令，通过第二无线接入网设备的PDCP层进行加密，使得第二无线接入网设备可以单独以加密方式配置第二无线接入网设备的无线资源，同时，第一无线接入网的RRC层可以保证终端设备的承载管理信令采用与第二无线接入网不同的加密机制。从而使不同的无线接入网设备管理不同的RRC信令，因此既能保证无线资源合理配置，又能保证数据传输加密的连续性。因而可以解决现有技术中，由于第二无线接入网设备和第一无线接入网设备更换，导致终端设备数据处理中断的问题。
图12示出了上述方法实施例中所涉及的一种支撑数据传输的装置可能的结构示意图，可以用于执行上述方法实施例中第二无线接入设备行为的功能，该装置可以包括接收模块、发送模块和处理模块。具体的：
接收模块1201，用于接收终端设备发送的该终端设备的标识。
发送模块1202，用于向第一无线接入网设备发送该接收模块接收的该终端设备的标识。
该接收模块1201还用于接收第一无线接入网设备发送的第一类RRC信令的配置信息，该第一类RRC信令的配置信息用于该第一无线接入网设备通过本装置与该终端标识所对应的该终端设备进行通信。
处理模块1203，用于在该接收模块1201接收该第一类RRC信令的配置信息后，确定第二类RRC信令的配置信息，该第二类RRC信令的配置信息用于与该终端标识对应的该终端设备之间进行通信。
该发送模块1202用于向该终端设备发送该处理模块1203确定的 第二类RRC信令的配置信息，或者向该终端设备发送该处理模块1203确定第二类RRC信令的配置信息和该接收模块1201接收的第一类RRC信令的配置信息。
示例性的，该处理模块1203可以具体用于生成第二类RRC信令配置信息。
示例性的，该处理模块确定1203的第二类RRC信令配置信息包括第二类RRC信令采用与第一类RRC信令不同的加密策略的信息，具体的加密方式可以参考上述方法实施例，在此不再赘述。
示例性的，该发送模块还用于向终端设备发送确认消息，该确认消息包括更新状态指示信息，该更新状态指示信息用于指示该终端设备进行数据发送，并基于小区重选更换目标小区。
该实施例的有益效果可以参照上述方法实施例，在此不再赘述。
本发明实施例提供的另一种支撑数据传输的装置，该实施例与图12所示的实施例类似，不同之处在于，该第二无线接入设备不需要生成生第二类RRC信令，而是直接接收第一无线接入网设备发送的第一类RRC信令的配置信息和第二类RRC信令的配置信息，具体的：接收模块可以直接接收第一类RRC信令的配置信息和第二类RRC信令的配置信息；发送模块向终端设备发送第二类RRC信令的配置信息或者第二类RRC信令配置信息和第一类RRC信令的配置信息。该实施例有益效查也可以参考上述实施例的有益效果。
可以理解的是，图12仅仅示出了一种支撑数据传输的装置的简化设计，在实际应用中，该装置可以为上述方法实施例中的第二无线 接入网设备，可以包含任意数量的发射器、接收器、处理器、控制器、存储器，通信单元等，而所有实现本发明的第二无线接入网设备都在本发明的保护范围之内。
图13示出了上述方法实施例中所涉及的一种支撑数据传输的装置可能的结构示意图，可以用于执行上述方法实施例中第一无线接入设备行为的功能，该装置可以包括接收模块和发送模块。具体的：
接收模块1301，用于接收第二无线接入网设备发送的终端设备的标识，该终端标识为终端设备发送给该第二无线接入网设备的；
发送模块1302，用于向该第二无线接入网设备发送第一类RRC信令的配置信息，该第一类RRC信令的配置信息用于该第二无线接接收网设备收到第一类RRC信令后，确定第二类RRC信令的配置信息，该第一类RRC信令的配置信息用于通过第二无线接入网设备与该终端标识所对应的该终端设备进行通信，该第二类RRC信令的配置信息用于该第二无线接入网设备与该终端标识对应的该终端设备之间进行通信。
该发送模块1302，用于向终端设备发送第一类RRC信令的配置信息。
示例性的，该发送模块发送的第一类RRC信令的配置信息包括：该第一类RRC信令采用与第二类RRC信令不同的加密策略，具体的加密策略可以参考上述方法实施例，在此不再赘述。
示例性的，该接收模块接收的该终端设备的标识由该第一无线接入网设备为终端设备分配该终端设备分配并通知的；或者由核心网设 备分配并通知给终端设备，或者由终端设备自身存储的。
该实施例的有益效果可以参照上述方法实施例，在此不再赘述。
本发明实施例提供的另一种支撑数据传输的装置，该实施例与图13所示的实施例类似，不同之处在于，发送模块向第二无线接入网设备发送的是第一类RRC信令的配置信息和第二类RRC信令的配置信息。这样就无需接收测去确定第二类RRC信令了。
可以理解的是，图13仅仅示出了一种支撑数据传输的装置的简化设计，在实际应用中，该装置可以为上述方法实施例中的第一无线接入网设备，可以包含任意数量的发射器、接收器、处理器、控制器、存储器，通信单元等，而所有实现本发明的第二无线接入网设备都在本发明的保护范围之内。
图14示出了上述方法实施例中所涉及的一种支撑数据传输的装置可能的结构示意图，可以用于执行上述方法实施例中终端设备行为的功能，该装置可以包括接收模块、发送模块和处理模块。具体的：
处理模块1401，用于获取该终端设备的标识。
发送模块1402，用于向第二无线接入网设备发送该处理模块1401获取的该终端设备的标识。
接收模块1403，用于接收第二无线接入网设备发送的第二类RRC信令的配置信息与第一无线接入网设备发送的第一类RRC信令的配置信息；或，接收第二无线接入网设备发送的第二类RRC信令的配置信和第一类RRC信令的配置信息。
其中，该第一类RRC信令的配置信息用于该第一无线接入网设备 通过第二无线接入网设备与该处理模块获取的终端标识所对应的该终端设备进行通信；该第二类RRC信令的配置信息用于该第二无线接入网设备与该处理模块获取的终端标识对应的该终端设备之间进行通信。
示例性的，该接收模块所接收的第一类RRC配置信息与第二类RRC配置信息中包括第一类RRC信令与第二类RRC信令采用不同的加密策略。具体的加密策略可以参照上述方法实施例，在此不再赘述。
示例性的，该接收模块还用于接收该第二无线接入网设备发送的确认消息，该确认消息包括更新状态指示信息，该更新状态指示信息用于指示该终端设备进行数据发送，并基于小区重选更换目标小区。
示例性的，该处理模块具体用于：接收该第一无线接入网设备分配并通知的终端设备标识；或者接收核心网设备分配并通知的终端设备标识；或者获取自身存储的终端设备标识。
该实施例的有益效果可以参照上述方法实施例，在此不再赘述。
可以理解的是，图14仅仅示出了一种支撑数据传输的装置的简化设计，在实际应用中，该装置可以为上述方法实施例中的终端设备，可以包含任意数量的发射器、接收器、处理器、控制器、存储器，通信单元等，而所有实现本发明的第一无线接入网设备都在本发明的保护范围之内。
本发明实施例还提供了一种支撑数据传输的系统可能的结构示意图，该系统至少包括核心网设备、至少一个第一无线接入网设备、至少一个第二无线接入网设备和至少一个终端设备，其中：
该第一无线接入网设备用于管理终端设备与核心网设备之间的连接，并且具备第一类RRC信令处理功能，该第一类RRC信令用于该第一无线接入网设备通过第二无线接入网设备与该终端设备进行通信；
该第二无线接入设备用于管理该第二无线接入网设备与终端设备之间的无线资源，并且具备第二类RRC信令处理功能，该第二类RRC信令用于该第二无线接入网设备与该终端设备之间进行通信；
该终端设备和该核心网设备之间的数据传输需要经过第二无线接入网设备进行处理和第一无线接入网设备处理。
示例性的，该第一类RRC信令为加密信令，该第二类RRC信令为不加密信令；或者该第一类RRC信令采用第一密钥加密，该第二类RRC信令采用第二密钥加密，该第一密钥和第二密钥为不同的密钥。
示例性的，该第一无线接入网设备还具备PDCP层处理功能，该PDCP层处理功能用于：对终端设备和该核心网设备之间传输的数据进行加密或解密；或者对终端设备和第一无线接入网设备之间的第一类RRC信令进行加密或解密。
示例性的，该第二无线接入网设备还具备PDCP层处理功能，该PDCP层处理功能用于：对终端设备与第二无线接入网设备之间的第二类RRC信令进行加密或解密。
该实施例的有益效果可以参照上述方法实施例，在此不再赘述。
可以理解的是，图15仅仅示出了支撑数据传输的系统简化设计，在实际应用中，该系统可以包含任意数量的第一无线接入网设备、第 二无线接入网设备、终端设备等。
从前述的描述可以获知，第一类RRC信令可以为第一无线接入网设备和终端设备之间进行通讯的RRC信令，该信令可以为加密信令，第二类RRC信令可以为第二无线接入网设备与终端设备进行通信的RRC信令，第二类RRC信令可以为不加密信令。采用本发明实施例所提供的技术方案，通过对第一无线接入网设备和第二无线接入网设备的RRC层进行功能划分，对第二无线接入网设备的RRC层和终端设备之间的需要交互的RRC信令，通过第二无线接入网设备的PDCP层进行加密，使得第二无线接入网设备可以单独以加密方式配置第二无线接入网设备的无线资源，同时，第一无线接入网的RRC层可以保证终端设备的承载管理信令采用与第二无线接入网不同的加密机制。从而使不同的无线接入网设备管理不同的RRC信令，因此既能保证无线资源合理配置，又能保证数据传输加密的连续性。因而可以解决现有技术中，由于第二无线接入网设备和第一无线接入网设备更换，导致终端设备数据处理中断的问题。
在上述本发明所提供的实施例中，通过对第二无线接入网设备(也可以称为服务无线接入网设备)的RRC层进行功能划分，不再限制终端设备同时在主无线接入网设备和辅无线接入网设备的覆盖范围内，因为第二无线接入网设备具用RRC层，可以直接与终端设备进行通信，进而保证第一无线接入网设备保持不变，仅变换第二无线接入网设备，仍然保持数据连续传输的机制。
需要特征说明的是，本发明实施例中所涉及的第一无线接入网设 备、第二无线接入网设备和终端设备可以采用有线连接，或者有采用无线连接，或者采用有线连接与无线连接的组合方式，对此本发明不做具体的限定。
本发明实施例虽然举例说明了两种协议栈架构，但是本发明包括并不限于上述两种协议栈架构，通过在第二无线接入网设备中设立RRC层与终端设备进行通信的方式，都属于本发明的保护范围，当然包括本发明未列举的其它协议栈架构或者变形。
本发明实施例虽然举例说明了本发明的应用场景可以为轻连接或双连接的场景，但是这种举例只是根据目前通信技术发展所举的例子，在之后的各种通信技术的演进版本中，只要当第二无线接入网设备不能与终端设备进行通信时，采用在第二无线接入网设备中设立RRC层，与终端设备进行通信的方式，都属于本发明的保护范围。
结合本发明公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于用户设备中。当然，处理器和存储介质也可以作为分 立组件存在于用户设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本发明所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上该的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上该仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。

Claims (34)

  1. 一种支撑数据传输的方法，其特征在于，包括：
    第二无线接入网设备接收终端设备发送的所述终端设备的标识；
    所述第二无线接入网设备向第一无线接入网设备发送所述终端设备的标识；
    所述第二无线接入网设备接收第一无线接入网设备发送的第一类RRC信令的配置信息，所述第一类RRC信令的配置信息用于所述第一无线接入网设备通过第二无线接入网设备与所述终端标识所对应的所述终端设备进行通信；
    所述第二无线接入网设备确定第二类RRC信令的配置信息，所述第二类RRC信令的配置信息用于所述第二无线接入网设备与所述终端标识对应的所述终端设备之间进行通信；
    所述第二无线接入网设备向所述终端设备发送第二类RRC信令的配置信息或者第二类RRC信令的配置信息和第一类RRC信令的配置信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第二无线接入网设备确定第二类RRC信令包括：
    所述第二无线接入网设备生成第二类RRC信令配置信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第二类RRC信令配置信息包括：
    第二类RRC信令采用与第一类RRC信令不同的加密策略。
  4. 根据权3所述的方法，其特征在于，所述第二类RRC信令采 用与第一类RRC信令不同的加密策略包括：
    所述第一类RRC信令采用所述终端设备密钥进行加密，所述第二类RRC信令不进行加密处理；或者，
    所述第一类RRC信令采用第一密钥进行加密，所述第二类RRC信令采用第二密钥进行加密，所述第一密钥与第二密钥不同。
  5. 根据权利要求1至4任一权要所述方法，其特征在于，所述方法还包括：
    所述第二无线接入网设备向终端设备发送确认消息，所述确认消息包括更新状态指示信息，所述更新状态指示信息用于指示所述终端设备进行数据发送，并基于小区重选更换目标小区。
  6. 根据权利要求1所述的方法，其特征在于，所述终端设备的标识为所述第一无线接入网设备分配并通知给终端设备，或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
  7. 一种支撑数据传输的方法，其特征在于，包括：
    第一无线接入网设备接收第二无线接入网设备发送的终端设备的标识，所述终端标识为终端设备发送给所述第二无线接入网设备的；
    所述第一无线接入网设备向所述第二无线接入网设备发送第一类RRC信令的配置信息，所述第一类RRC信令的配置信息用于所述第二无线接接收网设备收到第一类RRC信令后，确定第二类RRC信令的配置信息；所述第一类RRC信令的配置信息用于所述第一无线接入网设备通过第二无线接入网设备与所述终端标识所对应的所述终端设 备进行通信，所述第二类RRC信令的配置信息用于所述第二无线接入网设备与所述终端标识对应的所述终端设备之间进行通信；
    所述第一无线接入网设备向终端设备发送第一类RRC信令的配置信息。
  8. 根据权利要求7所述的方法，其特征在于，所述第一类RRC信令的配置信息包括：
    所述第一类RRC信令采用与第二类RRC信令不同的加密策略。
  9. 根据权8所述的方法，其特征在于，所述第一类RRC信令采用与第二类RRC信令不同的加密策略包括：
    所述第一类RRC信令采用所述终端设备密钥进行加密，所述第二类RRC信令不进行加密处理；或者，
    所述第一类RRC信令采用第一密钥进行加密，所述第二类RRC信令采用第二密钥进行加密，所述第一密钥与第二密钥不同。
  10. 根据权利要求1所述的方法，其特征在于，所述终端设备的标识由所述第一无线接入网设备为终端设备分配所述终端设备分配并通知的；或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
  11. 一种支撑数据传输的方法，其特征在于，包括：
    终端设备获取所述终端设备的标识；
    所述终端设备向第二无线接入网设备发送所述终端设备的标识；
    所述终端设备接收第二无线接入网设备发送的第二类RRC信令的配置信息与第一无线接入网设备发送的第一类RRC信令的配置信 息；或，接收第二无线接入网设备发送的第二类RRC信令的配置信息和第一类RRC信令的配置信息；
    其中，所述第一类RRC信令的配置信息用于所述第一无线接入网设备通过第二无线接入网设备与所述终端标识所对应的所述终端设备进行通信；所述第二类RRC信令的配置信息用于所述第二无线接入网设备与所述终端标识对应的所述终端设备之间进行通信。
  12. 根据权利要求11所述的方法，其特征在于，所述终端设备接收的第一类RRC信令的配置信息与第二类RRC信令的配置信息中规定第一类RRC信令与第二类RRC信令采用不同的加密策略。
  13. 根据权12所述的方法，其特征在于，所述第一类RRC信令与第二类RRC信令采用不同的加密策略包括：
    所述第一类RRC信令采用所述终端设备密钥进行加密，所述第二类RRC信令不进行加密处理；或者，
    所述第一类RRC信令采用第一密钥进行加密，所述第二类RRC信令采用第二密钥进行加密，所述第一密钥与第二密钥不同。
  14. 根据权利要求11至13任一权要所述方法，其特征在于，所述方法还包括：
    所述终端设备接收所述第二无线接入网设备发送的确认消息，所述确认消息包括更新状态指示信息，所述更新状态指示信息用于指示所述终端设备进行数据发送，并基于小区重选更换目标小区。
  15. 根据权利要求12所述的方法，其特征在于，所述终端设备获取所述终端设备的标识包括：
    接收所述第一无线接入网设备分配并通知的终端设备标识；或者
    接收核心网设备分配并通知的终端设备标识；或者
    获取自身存储的终端设备标识。
  16. 一种支撑数据传输的装置，其特征在于，包括：
    接收模块，用于接收终端设备发送的所述终端设备的标识；
    发送模块，用于向第一无线接入网设备发送所述接收模块接收的所述终端设备的标识；
    所述接收模块还用于接收第一无线接入网设备发送的第一类RRC信令的配置信息，所述第一类RRC信令的配置信息用于所述第一无线接入网设备通过本装置与所述终端标识所对应的所述终端设备进行通信；
    处理模块，用于在所述接收模块接收所述第一类RRC信令的配置信息后，确定第二类RRC信令的配置信息，所述第二类RRC信令的配置信息用于与所述终端标识对应的所述终端设备之间进行通信；
    所述发送模块用于向所述终端设备发送所述处理模块确定的第二类RRC信令的配置信息，或者向所述终端设备发送所述处理模块确定第二类RRC信令的配置信息和所述接收模块接收的第一类RRC信令的配置信息。
  17. 根据权利要求16所述的装置，其特征在于，所述处理模块具体用于生成第二类RRC信令配置信息。
  18. 根据权利要求16或17所述的装置，其特征在于，所述处理模块确定的第二类RRC信令配置信息包括第二类RRC信令采用与第一 类RRC信令不同的加密策略的信息。
  19. 根据权利要求18所述的装置，其特征在于，所述不同的加密策略的信息包括：
    所述第一类RRC信令采用所述终端设备密钥进行加密，所述第二类RRC信令不进行加密处理；或者，
    所述第一类RRC信令采用第一密钥进行加密，所述第二类RRC信令采用第二密钥进行加密，所述第一密钥与第二密钥不同。
  20. 根据权利要求16至19任一权要所述的装置，其特征在于，所述发送模块还用于向终端设备发送确认消息，所述确认消息包括更新状态指示信息，所述更新状态指示信息用于指示所述终端设备进行数据发送，并基于小区重选更换目标小区。
  21. 根据权利要求16所述的装置，其特征在于，所述接收模块接收的所述终端标识为所述装置分配并通知给终端设备，或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
  22. 一种支撑数据传输的装置，其特征在于，包括：
    接收模块，用于接收第二无线接入网设备发送的终端设备的标识，所述终端标识为终端设备发送给所述第二无线接入网设备的；
    发送模块，用于向所述第二无线接入网设备发送第一类RRC信令的配置信息，所述第一类RRC信令的配置信息用于所述第二无线接接收网设备收到第一类RRC信令后，确定第二类RRC信令的配置信息，所述第一类RRC信令的配置信息用于通过第二无线接入网设备与所述终端标识所对应的所述终端设备进行通信，所述第二类RRC信令的 配置信息用于所述第二无线接入网设备与所述终端标识对应的所述终端设备之间进行通信；
    所述发送模块，用于向终端设备发送第一类RRC信令的配置信息。
  23. 根据权利要求22所述的装置，其特征在于，所述发送模块发送的第一类RRC信令的配置信息包括：所述第一类RRC信令采用与第二类RRC信令不同的加密策略。
  24. 根据权利要求23所述的装置，其特征在于，所述第一类RRC信令采用与第二类RRC信令不同的加密策略包括：
    所述第一类RRC信令采用所述终端设备密钥进行加密，所述第二类RRC信令不进行加密处理；或者，
    所述第一类RRC信令采用第一密钥进行加密，所述第二类RRC信令采用第二密钥进行加密，所述第一密钥与第二密钥不同。
  25. 根据权利要求22所述的装置，其特征在于，所述接收模块接收的所述终端设备的标识由所述第一无线接入网设备为终端设备分配所述终端设备分配并通知的；或者由核心网设备分配并通知给终端设备，或者由终端设备自身存储的。
  26. 一种支撑数据传输的装置，其特征在于，包括：
    处理模块，用于获取所述终端设备的标识；
    发送模块，用于向第二无线接入网设备发送所述终端设备的标识；
    接收模块，用于接收第二无线接入网设备发送的第二类RRC信令 的配置信息与第一无线接入网设备发送的第一类RRC信令的配置信息；或，接收第二无线接入网设备发送的第二类RRC信令的配置信和第一类RRC信令的配置信息；
    其中，所述第一类RRC信令的配置信息用于所述第一无线接入网设备通过第二无线接入网设备与所述处理模块获取的终端标识所对应的所述终端设备进行通信；所述第二类RRC信令的配置信息用于所述第二无线接入网设备与所述处理模块获取的终端标识对应的所述终端设备之间进行通信。
  27. 根据权利要求26所述装置，其特征在于，所述接收模块所接收的第一类RRC类RRC配置信息与第二类RRC配置信息中包括第一类RRC信令与第二类RRC信令采用不同的加密策略。
  28. 根据权27所述的方法，其特征在于，所述第一类RRC信令与第二类RRC信令采用不同的加密策略包括：
    所述第一类RRC信令采用所述终端设备密钥进行加密，所述第二类RRC信令不进行加密处理；或者，
    所述第一类RRC信令采用第一密钥进行加密，所述第二类RRC信令采用第二密钥进行加密，所述第一密钥与第二密钥不同。
  29. 根据权利要求26所述的装置，其特征在于，所述接收模块还用于接收所述第二无线接入网设备发送的确认消息，所述确认消息包括更新状态指示信息，所述更新状态指示信息用于指示所述终端设备进行数据发送，并基于小区重选更换目标小区。
  30. 根据权利要求26所述的装置，其特征在于，所述处理模块 具体用于：
    接收所述第一无线接入网设备分配并通知的终端设备标识；或者
    接收核心网设备分配并通知的终端设备标识；或者
    获取自身存储的终端设备标识。
  31. 一种支撑数据传输的系统，其特征在于，所述系统至少包括核心网设备、至少一个第一无线接入网设备、至少一个第二无线接入网设备和至少一个终端设备，所述第一无线接入网设备与核心网设备通过第一接口进行通信，所述第一无线接入网设备与第二无线接入网设备通过第二接口进行通信，所述第二无线接入网设备与终端设备通过第三接口进行通信，其中：
    所述第一无线接入网设备用于管理终端设备与核心网设备之间的连接，并且具备第一类RRC信令处理功能，所述第一类RRC信令用于所述第一无线接入网设备通过第二无线接入网设备与所述终端设备进行通信；
    所述第二无线接入设备用于管理所述第二无线接入网设备与终端设备之间的无线资源，并且具备第二类RRC信令处理功能，所述第二类RRC信令用于所述第二无线接入网设备与所述终端设备之间进行通信；
    所述终端设备和所述核心网设备之间的数据传输需要经过第二无线接入网设备进行处理和第一无线接入网设备处理。
  32. 根据权利要求31所述的系统，其特征在于，
    所述第一类RRC信令为加密信令，所述第二类RRC信令为不加密 信令；或者
    所述第一类RRC信令采用第一密钥加密，所述第二类RRC信令采用第二密钥加密，所述第一密钥和第二密钥为不同的密钥。
  33. 根据权利要求31或32所述的系统，其特征在于，所述第一无线接入网设备还具备PDCP层处理功能，所述PDCP层处理功能用于：
    对终端设备和所述核心网设备之间传输的数据进行加密或解密；或者
    对终端设备和第一无线接入网设备之间的第一类RRC信令进行加密或解密。
  34. 根据权利要求31至33任一权利要求所述的系统，其特征在于，所述第二无线接入网设备还具备PDCP层处理功能，所述PDCP层处理功能用于：对终端设备与第二无线接入网设备之间的第二类RRC信令进行加密或解密。
PCT/CN2016/100830 2016-09-29 2016-09-29 一种支撑数据传输的方法、装置及系统 WO2018058439A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2016/100830 WO2018058439A1 (zh) 2016-09-29 2016-09-29 一种支撑数据传输的方法、装置及系统
CN201680089541.3A CN109792602B (zh) 2016-09-29 2016-09-29 一种支撑数据传输的方法、装置及系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/100830 WO2018058439A1 (zh) 2016-09-29 2016-09-29 一种支撑数据传输的方法、装置及系统

Publications (1)

Publication Number Publication Date
WO2018058439A1 true WO2018058439A1 (zh) 2018-04-05

Family

ID=61763642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/100830 WO2018058439A1 (zh) 2016-09-29 2016-09-29 一种支撑数据传输的方法、装置及系统

Country Status (2)

Country Link
CN (1) CN109792602B (zh)
WO (1) WO2018058439A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101675678A (zh) * 2007-03-12 2010-03-17 诺基亚公司 用于提供辅助切换命令的设备、方法和计算机程序产品
CN103687053A (zh) * 2012-09-20 2014-03-26 电信科学技术研究院 一种连接重建的方法及设备
CN104303548A (zh) * 2012-05-02 2015-01-21 高通股份有限公司 用于具有减少信令的已连接模式的装置和方法
CN105265009A (zh) * 2013-05-15 2016-01-20 阿尔卡特朗讯公司 网络节点和方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104160730B (zh) * 2012-02-06 2018-09-25 诺基亚技术有限公司 快速接入方法和装置
EP2665328A1 (en) * 2012-04-16 2013-11-20 Innovative Sonic Corporation Method and apparatus for logging instances of a UE failing to establish connection in a wireless communication network
WO2014163419A1 (ko) * 2013-04-04 2014-10-09 주식회사 케이티 무선링크실패 처리 방법 및 그 장치
CN104602307A (zh) * 2013-10-30 2015-05-06 北京三星通信技术研究有限公司 切换方法及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101675678A (zh) * 2007-03-12 2010-03-17 诺基亚公司 用于提供辅助切换命令的设备、方法和计算机程序产品
CN104303548A (zh) * 2012-05-02 2015-01-21 高通股份有限公司 用于具有减少信令的已连接模式的装置和方法
CN103687053A (zh) * 2012-09-20 2014-03-26 电信科学技术研究院 一种连接重建的方法及设备
CN105265009A (zh) * 2013-05-15 2016-01-20 阿尔卡特朗讯公司 网络节点和方法

Also Published As

Publication number Publication date
CN109792602B (zh) 2021-06-08
CN109792602A (zh) 2019-05-21

Similar Documents

Publication Publication Date Title
US11553551B2 (en) Method and device for supporting double connection of RRC inactivation mode in next generation mobile communication system
US10420004B2 (en) Communication method and apparatus applied to hyper cell
JP2019221005A (ja) デュアルモード端末の性能情報報告方法及び装置
TWI733216B (zh) 無效協定資料單元會話之處理方法及其使用者設備
WO2016119109A1 (zh) 一种切换装置及方法
JP6243067B2 (ja) 基地局及び方法
US10863569B2 (en) RRC connection re-establishment method for data transmission
WO2018137666A1 (zh) 一种数据传输方法、网络设备及终端设备
JP2018523339A (ja) ワイヤレス通信ネットワークにおいて無線アクセスネットワーク（ｒａｎ）コンテキスト情報を扱うためのネットワークノード、ワイヤレスデバイス及びそれらにおける方法
WO2013075602A1 (zh) 实现载波聚合的方法、基站和用户设备
JP2017514367A (ja) ベアラ管理装置、方法及び通信システム
JP2014099878A (ja) 移動電気通信ネットワークにおけるｕｅ能力情報の更新方法
WO2014032502A1 (zh) 终端接入方法、系统和终端
CN108282833B (zh) 处理系统间移动中的分组数据流的装置及方法
WO2013091161A1 (en) A method and apparatus for mobility robustness optimization
WO2016180157A1 (zh) 一种实现用户设备ue的基站间切换的方法及装置
JP2019510445A (ja) モビリティ管理方法、装置、及びシステム
WO2015161575A1 (zh) 用户终端位置上报方法、基站、移动管理实体及系统
WO2010075717A1 (zh) 用户上下行不同步切换的方法和装置
US20200323028A1 (en) Enhancement of Feature Support after Interworking
WO2022151086A1 (zh) 集成的接入和回传的通信方法以及装置
WO2022082544A1 (zh) Iab节点的移植方法及装置
WO2017148379A1 (zh) 应用于超级小区的通信方法和装置
WO2013071850A1 (zh) 上行链路变更的方法、装置及系统
WO2017166291A1 (zh) 一种通信方法、终端、基站和移动性管理设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16917193

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16917193

Country of ref document: EP

Kind code of ref document: A1