WO2018133607A1 - 一种数据传输的方法、装置及系统 - Google Patents

一种数据传输的方法、装置及系统 Download PDF

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Publication number
WO2018133607A1
WO2018133607A1 PCT/CN2017/117121 CN2017117121W WO2018133607A1 WO 2018133607 A1 WO2018133607 A1 WO 2018133607A1 CN 2017117121 W CN2017117121 W CN 2017117121W WO 2018133607 A1 WO2018133607 A1 WO 2018133607A1
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Prior art keywords
base station
preset state
layer
count value
key update
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PCT/CN2017/117121
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English (en)
French (fr)
Inventor
牛丽
吴昱民
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中兴通讯股份有限公司
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Publication of WO2018133607A1 publication Critical patent/WO2018133607A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]

Definitions

  • the present disclosure relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a system for data transmission.
  • the Long Term Evolution (LTE) system mainly includes the following three parts: User Equipment (UE, User Equipment), Core Network (CN, Core Network), and Base Station (eNB, Evolved Node B).
  • the mobility management entity (MME, Mobility Management Entity) in the core network is mainly responsible for signaling transmission, and the service gateway (SGW, Serving GateWay) is mainly responsible for data transmission.
  • the interface between the UE and the eNB is the Uu interface, and the eNBs are connected to each other through the X2 interface.
  • the interface between the eNB and the core network is the S1 interface, as shown in FIG.
  • the E-UTRAN Evolved UMTS Terrestrial Radio Access Network
  • protocol architecture of the UE, eNB, and MME is as shown in FIG. 2.
  • protocol layer RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical Layer
  • AS Access Stratum
  • NAS Non Access Stratum
  • the UE needs to access the eNB to communicate with the eNB, that is, initiate a random access procedure.
  • the random access process includes the following four steps:
  • Step 301 The UE learns the available preamble sequence (Preamble) for the random access and the time-frequency location of the transmission preamble sequence through system information or RRC signaling, and then randomly selects the preamble sequence and the transmission preamble sequence within the available resources. Time-frequency position, sending a preamble sequence to the eNB;
  • Step 302 The eNB estimates the RA-RNTI (Random Access Radio Network Temporary Identity) that the UE may use by using the time-frequency location of the random access preamble sequence, and decodes the preamble sequence by using the RA-RNTI. After the eNB successfully decodes the preamble sequence, the eNB returns a random access response, where the random access response carries information such as an uplink grant;
  • RA-RNTI Random Access Radio Network Temporary Identity
  • Step 303 The UE sends uplink data on the uplink authorized resource, and carries information such as the identifier of the UE.
  • Step 304 The eNB parses the uplink data on the uplink authorized resource, confirms the UE, resolves the conflict, and sends the contention resolution identifier to the UE.
  • the above process has a long delay, and the non-orthogonal technology has been recognized by various companies. Therefore, the random access process has also been technically updated, which can be simplified into a two-step process.
  • the UE may send data to the eNB without authorization.
  • the process of unauthorized uplink transmission includes the following two steps:
  • Step 401 The UE selects a resource and sends uplink data in an unlicensed resource.
  • Step 402 After the eNB parses the uplink data, the responsive response or the data is returned.
  • the solution may include two modes: one is that the UE sends the uplink sequence while transmitting the uplink data; the other is that the UE only sends the uplink data.
  • the delay of the unauthorized uplink data transmission process shown in FIG. 4 is smaller and more flexible.
  • the UE can use the unlicensed method of sending uplink data to reduce the time of the data packet. Delay, reducing the load of signaling.
  • the transmission data of the UE in the unlicensed transmission mode is different from the traditional transmission data in the connected state, and the UE is mobile in the inactive state, it can be reselected to other cells and used in other cells.
  • the data is transmitted in the unauthorised mode. Therefore, the process of the UE processing the transmitted data is adapted to the mobility of the UE.
  • the UE sends a lot of data packets, which causes the COUNT value used by the PDCP layer of the service to reach a maximum value, causing the key to be updated.
  • the embodiments of the present disclosure provide a method, an apparatus, and a system for data transmission, which provide a manner in which a UE processes a transmission data in a preset state.
  • An aspect of the present disclosure provides a method for data transmission, including: in a preset state, a UE adopts a preset configuration manner to process transmission data; wherein the preset state refers to an interface between a UE and a base station is disconnected. The interface between the base station and the core network remains connected.
  • the UE processes the sending data in a preset state in a preset state, and may include: the UE is in a preset state, and the radio bearer in the user interface is in accordance with the saved connected state.
  • the configuration mode processes the transmitted data.
  • the processing, by the UE, in the preset state, in the configuration manner of the radio bearer in the saved connection state may include:
  • the UE performs at least one of the following operations on the radio bearer that can support the transmission:
  • Reset the MAC layer maintain the PDCP layer state; maintain the RLC layer state; suspend the radio bearer; apply default configuration parameters at the MAC layer and the PHY.
  • the maintaining the PDCP layer state may include: maintaining a PDCP SN, a COUNT value, a next hop link count (NCC), a robustness header compression (ROHC) state, and PDCP configuration information;
  • the maintaining the RLC status may include maintaining the RLC SN, the RLC mode, and the RLC configuration information.
  • the UE processes the sending data in a preset state in a preset state, and may include: the UE processing the device according to a predetermined radio bearer configuration manner in the preset state. Send data.
  • the processing, by the UE, in the preset state, in the user plane, according to the configuration manner of the predetermined radio bearer may include:
  • the UE performs at least one of the following operations on the radio bearer that can support the transmission:
  • UM non-acknowledgment
  • the UE processes the sending data in a preset state by using a preset state, and may include: the UE is processed in the user plane according to the configuration manner of the radio bearer of the target base station in the preset state. Transmitting the data; wherein the target base station is a base station to which the UE may be reselected.
  • the processing, by the UE, in the preset state, in the user plane, according to the configuration manner of the radio bearer of the target base station may include:
  • the UE performs at least one of the following operations on the radio bearer that can support the transmission:
  • the radio bearer may include at least one of the following: a DRB, an SRB.
  • the method of data transmission may further include:
  • the UE When the UE is in the preset state, and the COUNT value used by the PDCP layer of any DRB or SRB reaches the COUNT value that triggers the UE to apply for a key update, the UE initiates a key update procedure.
  • the COUNT value for triggering the UE to apply for a key update is preset, or is broadcast by the base station through system information, or is configured by the base station through RRC signaling.
  • the UE initiates a key update process, which may include:
  • the UE sends RRC signaling, where the RRC signaling carries a key update request.
  • the RRC signaling may include one of the following: an RRC Connection Reestablishment Request message (RRCConnectionReestablishmentRequest), an RRC Connection Recovery Request message (RRCConnectionResumeRequest), and a customized new message.
  • RRCConnectionReestablishmentRequest an RRC Connection Reestablishment Request message
  • RRCConnectionResumeRequest an RRC Connection Recovery Request message
  • a customized new message a customized new message.
  • the method of data transmission may further include:
  • the UE After receiving the paging message, the UE performs at least one of the following operations:
  • Reset the MAC layer rebuild the RLC layer; update the key; set the COUNT value used by the PDCP layer to 1; configure the PDCP layer and the RLC layer according to the configuration mode saved in the preset state; apply the default configuration in the MAC layer and the PHY.
  • the UE After performing the above operations, the UE remains in the preset state.
  • the method of data transmission may further include:
  • the UE After receiving the RRC connection reconfiguration message, the UE performs at least one of the following operations:
  • Reset the MAC layer rebuild the RLC layer; update the key; set the COUNT value used by the PDCP layer to 1; configure the PDCP layer and the RLC layer according to the configuration mode saved in the preset state; apply the default configuration in the MAC layer and the PHY. parameter;
  • the UE After performing the foregoing operations, the UE sends an RRC connection reconfiguration complete message to the base station by using an unlicensed transmission mode, and remains in the preset state.
  • the method of data transmission may further include:
  • the UE After receiving the RRC connection reconfiguration message, the UE performs at least one of the following operations:
  • the MAC layer is reset; the RLC layer is reconstructed; the PDCP layer is reconstructed; and the configuration mode of the preset state is updated according to the configuration information carried in the RRC connection reconfiguration message;
  • the UE After performing the foregoing operations, the UE sends an RRC connection reconfiguration complete message to the base station of the target cell by using an unlicensed transmission mode, and switches to the target cell to enter the connected state.
  • the data transmission method may further include: the UE transmitting the sending data by using an unlicensed transmission mode.
  • Another aspect of the present disclosure also provides a method of data transmission, including:
  • the base station indicates the configuration mode of the preset state to the UE, so that the UE processes the transmission data in the preset mode by using the configuration mode, where the preset state refers to that the interface between the UE and the base station is disconnected and the base station is disconnected.
  • the state of the connection with the interface between the core network is not limited to that the interface between the core network.
  • the method for data transmission may further include: the base station instructing the UE to enter a preset state.
  • the method for data transmission may further include:
  • the eNB sends a COUNT value that triggers the UE to apply for a key update by using the system information broadcast or the RRC signaling, so that the COUNT value used by the UE in the preset state in the PDCP layer of any DRB or SRB reaches the triggering UE application.
  • the key update process is initiated when the COUNT value of the key is updated.
  • the method for data transmission may further include:
  • the base station After receiving the key update request sent by the UE, the base station determines whether the COUNT value used by the PDCP layer of any DRB or SRB of the UE reaches the COUNT value of the triggered UE request key update, and if so, And sending a reply response message to the UE, where the reply response message carries key update indication information.
  • the method for data transmission may further include:
  • the base station monitors a COUNT value used by a PDCP layer of any DRB or SRB of the UE;
  • the base station When detecting that the COUNT value used by the PDCP layer of any DRB or SRB of the UE in the preset state reaches the COUNT value that triggers the UE to apply for the key update, the base station notifies the UE to update the key by using a paging message.
  • the paging message carries the key update indication information; or the base station notifies the UE to update the key by using an RRC connection reconfiguration message, where the RRC connection reconfiguration message carries the key update indication information.
  • a still further aspect of the present disclosure provides an apparatus for data transmission, which is applied to a UE, including:
  • a first processing module configured to process, when the UE is in a preset state, process the sending data by using a preset configuration manner, where the preset state refers to an interface disconnected between the UE and the base station, and the base station and the core network The interface between the ports remains connected.
  • the first processing module is configured to process the sending data by using at least one of the following manners:
  • the transmitting data is processed on the user plane according to the configuration manner of the radio bearer of the target base station.
  • the apparatus for data transmission may further include:
  • a second processing module configured to initiate a key update process when the UE is in the preset state, and the COUNT value used by the PDCP layer of any DRB or SRB reaches the COUNT value that triggers the UE to apply for the key update.
  • the apparatus for data transmission may further include:
  • a receiving module configured to receive a paging message that carries the key update indication information, or receive an RRC connection reconfiguration message that carries the key update indication information;
  • a third processing module configured to: after the receiving module receives the paging message, perform at least one of: resetting a MAC layer; reconstructing an RLC layer; updating a key; setting a COUNT value used by the PDCP layer to 1; configure the PDCP layer and the RLC layer according to the configuration mode saved in the preset state; apply default configuration parameters in the MAC layer and the PHY; and keep the state in the preset state after performing the above operations;
  • the receiving module after the receiving module receives the RRC connection reconfiguration message, perform at least one of the following operations: reset the MAC layer; reconstruct the RLC layer; update the key; set the COUNT value used by the PDCP layer to 1 Configuring the PDCP layer and the RLC layer according to the configuration mode saved in the preset state; applying the default configuration parameters in the MAC layer and the PHY; and performing the above operation, using the unlicensed transmission mode to send the RRC connection reconfiguration to the base station. Message and keep it in the default state.
  • the apparatus for data transmission may further include: a transmitting module, configured to transmit the transmission data by using an unlicensed transmission manner.
  • a still further aspect of the present disclosure provides an apparatus for data transmission, which is applied to a base station, and includes:
  • a first indication module configured to indicate, to the user equipment UE, a configuration mode of the preset state, so that the UE processes the sending data by using the configuration mode in a preset state, where the preset state refers to between the UE and the base station
  • the interface is disconnected and the interface between the base station and the core network remains connected.
  • the apparatus for data transmission may further include:
  • the second indication module is configured to instruct the UE to enter a preset state.
  • the apparatus for data transmission may further include:
  • a first transmission module configured to send, by using system information broadcast or RRC signaling, a COUNT value that triggers a UE to apply for a key update, so that the UE in the preset state uses the COUNT value used in the PDCP layer of any DRB or SRB.
  • the key update process is initiated when the COUNT value that triggers the UE to apply for a key update is described.
  • the apparatus for data transmission may further include:
  • a request receiving module configured to receive a key update request sent by the UE
  • a determining module configured to determine, after the request receiving module receives the key update request sent by the UE, whether the COUNT value used by the PDCP layer of any DRB or SRB of the UE reaches the triggering UE to apply for a key update COUNT value;
  • the second transmission module is configured to send a reply response message to the UE when the result of the determining module is yes, where the reply response message carries key update indication information.
  • the apparatus for data transmission may further include:
  • a monitoring module configured to monitor a COUNT value used by a PDCP layer of any DRB or SRB of the UE;
  • a notification module configured to notify, by using a paging message, when the monitoring module detects that the COUNT value used by the PDCP layer of any DRB or SRB of the UE in the preset state reaches the COUNT value that triggers the UE to apply for the key update.
  • a UE update key wherein the paging message carries key update indication information; or, the RRC connection reconfiguration message is used to notify the UE to update a key, wherein the RRC connection reconfiguration message carries a key update indication information.
  • a still further aspect of the disclosure provides a system for data transmission, including: a UE and a base station;
  • the base station is configured to indicate, to the UE, a configuration manner of a preset state
  • the UE is configured to process the sending data by using the configuration manner in a preset state
  • the preset state refers to a state in which an interface between the UE and the base station is disconnected and an interface between the base station and the core network remains connected.
  • Still another aspect of the present disclosure provides a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement a method of data transmission applied to a UE side.
  • Still another aspect of the present disclosure also provides a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement a method of data transmission applied to a base station side.
  • the UE processes the transmission data in a preset state in a preset state, where the preset state refers to an interface disconnected between the UE and the base station and an interface between the base station and the core network. Stay connected.
  • the embodiment of the present disclosure provides a manner in which the UE processes the data in the preset state, and further implements the mobility of the UE in the preset state when the non-authorized transmission mode is adopted in the preset state.
  • the key update process is performed, thereby realizing the timely update of the key.
  • FIG 1 is an architectural diagram of LTE
  • 2 is a protocol architecture diagram of a UE, an eNB, and an MME;
  • FIG. 5 is a flowchart of a method for data transmission according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart of another method for data transmission according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of an apparatus for data transmission according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram 1 of another apparatus for data transmission according to an embodiment of the present disclosure.
  • FIG. 9 is a second schematic diagram of another apparatus for data transmission according to an embodiment of the present disclosure.
  • An embodiment of the present disclosure provides a data transmission method, as shown in FIG. 5, including:
  • Step 501 The UE processes the sending data in a preset state by using a preset state configuration manner.
  • the preset state refers to a state in which the interface between the UE and the base station is disconnected and the interface between the base station and the core network remains connected.
  • the interface between the UE and the base station is a Uu interface
  • the interface between the base station and the core network is the S1 interface.
  • step 501 can include:
  • the UE In the preset state, the UE processes the sending data according to the configuration mode of the radio bearer in the saved connected state.
  • the UE may perform at least one of the following operations on the radio bearer that can support the transmission:
  • Reset the MAC layer maintain the PDCP layer state; maintain the RLC layer state; suspend the radio bearer; apply default configuration parameters at the MAC layer and the PHY.
  • maintaining the PDCP layer state may include: maintaining a PDCP sequence number (SN, Serial Number), a COUNT value, a next hop link count (NCC, nextHopChainingCount), and a robustness header compression (ROHC, Robust Header Compression) state.
  • PDCP sequence number SN, Serial Number
  • COUNT a COUNT value
  • NCC next hop link count
  • ROHC robustness header compression
  • Maintaining the RLC state may include: maintaining the RLC SN, the RLC mode, and the RLC configuration information.
  • the radio bearer may include at least one of the following: a Data Radio Bearer (DRB), and a Signal Radio Bearer (SRB).
  • DRB Data Radio Bearer
  • SRB Signal Radio Bearer
  • step 501 can include:
  • the UE In the preset state, the UE processes the transmission data according to the configuration manner of the predetermined radio bearer on the user plane.
  • the UE may perform at least one of the following operations on the radio bearer that can support the transmission:
  • Reset the MAC layer reconstruct the RLC layer; rebuild the PDCP layer; suspend the radio bearer; update the key; apply the non-acknowledgment (UM) mode configuration parameters at the PDCP layer; apply the UM mode configuration parameters at the RLC layer;
  • the PHY applies default configuration parameters.
  • the radio bearer may include at least one of the following: DRB, SRB.
  • step 501 can include:
  • the UE processes the transmission data according to the configuration manner of the radio bearer of the target base station in the preset state, where the target base station is the base station to which the UE may be reselected.
  • the UE performs at least one of the following operations on the radio bearer that can support the transmission:
  • Reset the MAC layer reconstruct the RLC layer; reconstruct the PDCP layer; suspend the radio bearer; update the key; apply the configuration parameters of the target base station in the PDCP layer; apply the configuration parameters of the target base station in the RLC layer; apply the default in the MAC layer and the PHY Configuration parameters.
  • the radio bearer may include at least one of the following: DRB, SRB.
  • the data transmission method provided in this embodiment may further include:
  • the UE When the UE is in the preset state, and the COUNT value used by the PDCP layer of any DRB or SRB reaches the COUNT value that triggers the UE to apply for the key update, the UE initiates a key update procedure.
  • the COUNT value that triggers the UE to apply for the key update may be preset, or may be broadcast by the base station through system information, or may be configured by the base station through RRC signaling.
  • the UE initiates a key update process, which may include:
  • the UE sends radio resource control (RRC) signaling, where the RRC signaling carries a key update request.
  • RRC radio resource control
  • the RRC signaling may include one of the following: an RRC connection reestablishment request message (RRCConnectionReestablishmentRequest), an RRC connection recovery request message (RRCConnectionResumeRequest), and a customized new message.
  • RRCConnectionReestablishmentRequest an RRC connection reestablishment request message
  • RRCConnectionResumeRequest an RRC connection recovery request message
  • a customized new message a customized new message.
  • the data transmission method provided in this embodiment may further include:
  • the UE After receiving the paging message carrying the key update indication information, the UE performs at least one of the following operations:
  • Reset the MAC layer rebuild the RLC layer; update the key; set the COUNT value used by the PDCP layer to 1; configure the PDCP layer and the RLC layer according to the configuration mode saved in the preset state; apply the default configuration in the MAC layer and the PHY.
  • the UE After performing the above operations, the UE remains in the preset state.
  • the data transmission method provided in this embodiment may further include:
  • the UE After receiving the RRC connection reconfiguration message carrying the key update indication information, the UE performs at least one of the following operations:
  • Reset the MAC layer rebuild the RLC layer; update the key; set the COUNT value used by the PDCH layer to 1; configure the PDCP layer and the RLC layer according to the configuration mode saved in the preset state; apply the default configuration in the MAC layer and the PHY. parameter;
  • the UE After performing the foregoing operations, the UE sends an RRC connection reconfiguration complete message to the base station by using an unlicensed transmission mode, and remains in the preset state.
  • the data transmission method provided in this embodiment may further include:
  • the UE After receiving the RRC connection reconfiguration message, the UE performs at least one of the following operations:
  • the MAC layer is reset; the RLC layer is reconstructed; the PDCP layer is reconstructed; and the configuration mode of the preset state is updated according to the configuration information carried in the RRC connection reconfiguration message;
  • the UE After performing the foregoing operations, the UE sends an RRC connection reconfiguration complete message to the base station of the target cell by using an unlicensed transmission mode, and switches to the target cell to enter the connected state.
  • the data transmission method provided in this embodiment may further include:
  • Step 502 The UE transmits the processed transmission data by using an unlicensed transmission mode.
  • the disclosure is exemplified below by various embodiments. It should be noted that, in the following embodiments, it is assumed that the UE is in the preset state. In the preset state, the Uu port of the UE is disconnected and the S1 port remains connected.
  • the user may process the data packet according to the configuration manner of the DRB and the SRB in the original connected state.
  • the base station When the base station indicates that the UE enters the preset state, the base station configures which services of the UE can support unauthorized transmission according to the capabilities of the UE and the type of the service. For example, for a certain UE, the base station indicates that the UE enters a preset state through an RRC message, and the RRC message carries a DRB and SRB list (list) that can support unauthorized transmission, where the RRC message may include one of the following: RRC connection release Message (RRCConnectionRelease), RRC Connection Reconfiguration message (RRCConnectionReconfiguration), RRC Connection Reestablishment message (RRCConnectionReestablishment), and custom new message.
  • RRC connection release Message RRCConnectionRelease
  • RRCConnectionReconfiguration RRC Connection Reestablishment message
  • RRCConnectionReestablishment RRC Connection Reestablishment message
  • the UE When the UE is in the preset state, the UE saves the context in the original connected state and the configuration mode of the DRB and the SRB.
  • the base station configures certain DRBs and SRBs of the UE to support unlicensed transmission, the UE performs operations of resetting the MAC layer, maintaining the RLC layer, and the PDCP layer state for these DRBs and SRBs.
  • the UE after receiving the RRC message from the base station, the UE performs the following operations on the DRB and the SRB that can support the unlicensed transmission according to the configuration mode in the saved connection state: resetting the MAC layer; PDCP layer status; maintain RLC layer status; suspend DRB and SRB; apply default configuration parameters at MAC layer and PHY.
  • the user facing the data packet may be processed according to a predetermined DRB and SRB configuration manner.
  • the base station configures which services of the UE can support unauthorized transmission according to the capabilities of the UE and the type of the service, and configures the processing manner of the data packet in the unauthorized state.
  • a specific processing method such as UM mode can be adopted.
  • the base station configures the UE to enter a preset state by using an RRC message, and the RRC message carries a DRB and an SRB list that can support the unlicensed transmission, and a configuration manner of the DRB and the SRB, where the UM mode may be included.
  • the RRC message may include one of the following: an RRC connection release message (RRCConnectionRelease), an RRC connection reconfiguration message (RRCConnectionReconfiguration), and a RRC connection release message (NCConnectionReconfiguration), and an RRC connection reconfiguration message (RRCConnectionReconfiguration).
  • RRC connection re-establishment message RRCConnectionReestablishment and customized new message.
  • the UE When the UE is in the preset state, and the base station configures certain DRBs and SRBs of the UE to support unlicensed transmission, the UE resets the MAC layer, reconstructs the RLC layer, reconstructs the PDCP layer, and applies new configuration parameters for the DRBs and SRBs. Operation. For example, for a certain UE, the UE receives the RRC connection reconfiguration message from the base station, and performs the following operations on the DRB and the SRB that can support the unlicensed transmission according to the configuration mode carried in the UE: resetting the MAC layer; and reconstructing the RLC. Layer; rebuild PDCP layer; suspend DRB and SRB; update key; apply UM mode configuration parameters in PDCP layer; apply UM mode configuration parameters in RLC layer; apply default configuration parameters in MAC layer and PHY.
  • the user facing the data packet may be processed according to the configuration manner of the target base station.
  • the original base station determines the target base station to which the UE may move by using the measurement report of the UE, and obtains the configuration mode of the UE at the target base station.
  • the original base station is reconfigured to the UE through RRC signaling.
  • the target base station configures which services of the UE can support unlicensed transmissions according to the characteristics of the UE and its own conditions, and configures the processing manner of the data packets in an unauthorized state.
  • the original base station configures the UE to enter the preset state through the RRC message, and the RRC message carries the target base station list that can support the preset state, and the configuration parameters of each target base station, which may include: The DRB and SRB list of the transmission, and the configuration of these DRBs and SRBs, can also carry the key update information NCC (nextHopChainingCount).
  • the RRC message may include one of the following: an RRC Connection Release message (RRCConnectionRelease), an RRC Connection Reconfiguration message (RRCConnectionReconfiguration), an RRC Connection Reestablishment message (RRCConnectionReestablishment), and a customized new message.
  • RRCConnectionRelease an RRC Connection Release message
  • RRCConnectionReconfiguration an RRC Connection Reconfiguration message
  • RRCConnectionReestablishment RRC Connection Reestablishment message
  • a customized new message a customized new message.
  • the UE When the UE is in the preset state, and the original base station configures the UE to support the unlicensed transmission in some DRBs and SRBs of the target base station, the UE resets the MAC layer, reconstructs the RLC layer, and reconstructs the PDCP layer for the DRBs and SRBs. And the operation of applying the target base station configuration parameters. For example, for a UE in a preset state, if the UE has data transmission and the UE selects a certain target base station, the UE performs the following DRB and SRB that can support unauthorized transmission according to the configuration manner of the target base station.
  • Operation reset the MAC layer; reconstruct the RLC layer; reconstruct the PDCP layer; suspend the DRB and SRB; update the key; apply the configuration parameters of the target base station in the PDCP layer; apply the configuration parameters of the target base station in the RLC layer; Apply default configuration parameters, etc.
  • the COUNT value used by the PDCP layer of one of the DRBs or SRBs may reach a maximum value, and needs to be flipped, and the flipping of the COUNT value may result in the update of the key.
  • the UE can apply for an update key to the base station.
  • the base station may configure the COUNT value for triggering the UE to apply for the key update through system information broadcast or RRC signaling.
  • the COUNT value used by the PDCP layer of a certain DRB or SRB of the UE reaches the COUNT value that triggers the UE to apply for the key update
  • the UE is Apply for an update key from the base station.
  • the COUNT value that triggers the UE to apply for the key update is determined in a predefined manner.
  • the COUNT value used by the PDCP layer of a certain service of the UE reaches the COUNT value that triggers the UE to apply for the key update, the UE applies for the update to the base station. key.
  • the UE requests an update key from the base station.
  • the UE sends RRC signaling to the base station, and the RRC signaling may carry the key update request.
  • the RRC signaling may include one of the following: an RRC connection reestablishment request message (RRCConnectionReestablishmentRequest), an RRC connection recovery request message (RRCConnectionResumeRequest), and a customized new message.
  • the base station After receiving the key update request sent by the UE, the base station determines whether the COUNT value used by the PDCP layer of a certain DRB or SRB of the UE is about to be reversed, and if yes, initiates a reply response message to the UE, and indicates a new message in the response response message. NCC.
  • the base station may also initiate a key update in view of the fact that the COUNT values of the base station and the UE are synchronized.
  • the base station may prompt the UE to update the key by using a paging message.
  • the base station adds the identity of the UE that needs to update the key to the paging message, and the paging message may also add key update indication information, such as NCC.
  • the RRC layer of the UE instructs the PDCP layer to update the key.
  • the UE may perform the following operations: reset the MAC layer, re-establish the RLC layer, update the key, set the COUNT value used by the PDCP layer to 1; configure the PDCP layer and the RLC layer according to the configuration mode saved in the preset state;
  • the MAC layer and the PHY apply default configuration parameters; moreover, the UE continues to remain in the preset state after performing the above operations.
  • the COUNT value used by the PDCP layer of a certain DRB or SRB may reach a maximum value, and needs to be reversed, and the base station may update the key through RRC signaling. And instruct the UE to remain in the default state.
  • the access is in the preset state, a cell is selected, and the unlicensed transmission is performed.
  • the base station may decide to update the key. Sending RRC signaling (such as an RRC connection reconfiguration message) to the UE, notifying the UE to update the key.
  • the UE may perform the following operations: reset the MAC layer; reconstruct the RLC layer; update the key; set the COUNT value used by the PDCP layer to 1; configure according to the configuration mode saved in the preset state.
  • the PDCP layer and the RLC layer; the default configuration parameters are applied at the MAC layer and the PHY; subsequently, the UE may send an RRC connection reconfiguration complete message to the base station in an unlicensed transmission mode, and continue to remain in the preset state.
  • the UE when the UE is in the preset state, the UE performs cell reselection, selects a new cell, and performs unauthorized transmission.
  • the target cell receives the uplink data packet of the UE, and finds the original cell of the UE according to the information such as the UE identifier carried therein, and transmits the uplink data packet of the UE to the original cell through the X2 interface.
  • the original cell may initiate a handover process of X2.
  • the original cell sends a handover request to the target cell; if the target cell agrees to the handover, the handover confirmation message is returned to the original cell; the original cell generates an RRC connection reconfiguration message indicating that the handover to the target cell is performed by the UE, and transmits the message to the target cell through the X2 port.
  • the RRC connection reconfiguration message is sent to the UE by the downlink feedback sent by the target cell through the unlicensed uplink.
  • the UE After receiving the RRC connection reconfiguration message, the UE performs the following operations: performing the following operations: resetting the MAC layer, reestablishing the RLC layer, reestablishing the PDCP layer, and updating the preset according to the configuration information carried in the RRC connection reconfiguration message.
  • the configuration mode of the state subsequently, the UE may send an RRC connection reconfiguration complete message to the base station of the target cell by using an unlicensed transmission mode, and enter a connected state.
  • this embodiment proposes a method for processing the transmitted data when the UE adopts an unlicensed transmission mode in the preset state, thereby facilitating adaptability to the mobility of the UE in the active state and timely updating the key.
  • an embodiment of the present disclosure further provides a data transmission method, as shown in FIG. 6, including:
  • Step 601 The base station indicates the configuration mode of the preset state to the UE, so that the UE processes the sending data in the configuration mode in the preset state.
  • the preset state refers to a state in which the interface between the UE and the base station is disconnected and the interface between the base station and the core network remains connected.
  • the interface between the UE and the base station is a Uu interface
  • the interface between the base station and the core network is the S1 interface.
  • Step 600 The base station instructs the UE to enter a preset state.
  • the data transmission method provided in this embodiment may further include:
  • the base station sends a COUNT value that triggers the UE to apply for a key update by using the system information broadcast or the RRC signaling, so that the UE in the preset state uses the COUNT value used in the PDCP layer of any DRB or SRB to trigger the UE to apply for the key update.
  • the KEY value initiates the key update process.
  • the data transmission method provided in this embodiment may further include:
  • the base station After receiving the key update request sent by the UE, the base station determines whether the COUNT value used by the PDCP layer of any DRB or SRB of the UE reaches the COUNT value that triggers the UE to apply for the key update, and if yes, sends a reply response message to the UE.
  • the reply response message carries the key update indication information.
  • the data transmission method provided in this embodiment may further include:
  • the base station monitors the COUNT value used by the PDCP layer of any DRB or SRB of the UE;
  • the base station When monitoring that the COUNT value used by the PDCP layer of any DRB or SRB of the UE in the preset state reaches the COUNT value that triggers the UE to apply for the key update, the base station notifies the UE to update the key by using a paging message, where the paging The message carries the key update indication information; or the base station notifies the UE to update the key by using an RRC connection reconfiguration message, where the RRC connection reconfiguration message carries the key update indication information.
  • an embodiment of the present disclosure further provides an apparatus for data transmission, as shown in FIG. 7, applied to a UE, including:
  • the first processing module 701 is configured to process the sending data by using a preset configuration mode when the UE is in the preset state;
  • the preset state refers to a state in which the interface between the UE and the base station is disconnected and the interface between the base station and the core network remains connected.
  • the first processing module 701 can be configured to process the sending data by using at least one of the following manners:
  • the sending data is processed on the user plane according to the configuration mode of the wireless bearer in the saved connected state;
  • the transmission data is processed on the user plane according to the configuration manner of the radio bearer of the target base station.
  • the apparatus for data transmission provided by this embodiment may further include:
  • the second processing module 702 is configured to initiate a key update process when the UE is in the preset state, and the COUNT value used by the PDCP layer of any DRB or SRB reaches the COUNT value that triggers the UE to apply for the key update.
  • the COUNT value that triggers the UE to apply for the key update may be preset, or is broadcast by the base station through system information, or is configured by the base station through RRC signaling.
  • the apparatus for data transmission provided by this embodiment may further include:
  • the receiving module 703 is configured to receive a paging message that carries the key update indication information, or receive an RRC connection reconfiguration message that carries the key update indication information;
  • the third processing module 704 is configured to: after the receiving module 703 receives the paging message carrying the key update indication information, perform at least one of the following operations: reset the MAC layer; reconstruct the RLC layer; update the key; use the PDCP layer
  • the COUNT value is set to 1; the PDCP layer and the RLC layer are configured according to the configuration mode saved in the preset state; the default configuration parameters are applied in the MAC layer and the PHY; and after the above operations are performed, remain in the preset state;
  • the receiving module 703 after the receiving module 703 receives the RRC connection reconfiguration message carrying the key update indication information, perform at least one of the following operations: reset the MAC layer; reconstruct the RLC layer; update the key; use the COUNT of the PDCP layer The value is set to 1; configure the PDCP layer and the RLC layer according to the configuration mode saved in the preset state; in the MAC layer and PHY The default configuration parameter is applied; and after the foregoing operation is performed, the RRC connection reconfiguration complete message is sent to the base station by using an unlicensed transmission mode, and is kept in the preset state.
  • the apparatus for data transmission provided by this embodiment may further include: a sending module 705, configured to send the sent data processed by the first processing module 701 by using an unlicensed transmission manner.
  • an embodiment of the present disclosure further provides an apparatus for data transmission, as shown in FIG. 8 or shown in FIG. 9, applied to a base station, including:
  • the first indication module 801 is configured to indicate, to the UE, a configuration manner of the preset state, so that the UE processes the sending data in a configuration manner in a preset state;
  • the preset state refers to a state in which the interface between the UE and the base station is disconnected and the interface between the base station and the core network remains connected.
  • the apparatus for data transmission provided by this embodiment may further include:
  • the second indication module 802 is configured to instruct the UE to enter a preset state.
  • the apparatus for data transmission provided by this embodiment may further include:
  • the first transmission module 803 is configured to send, by using system information broadcast or RRC signaling, a COUNT value that triggers the UE to apply for a key update, so that the UE in the preset state uses the COUNT value used in the PDCP layer of any DRB or SRB.
  • the key update process is initiated when the COUNT value of the UE requesting the key update is triggered.
  • the apparatus for data transmission provided by this embodiment may further include:
  • the request receiving module 804 is configured to receive a key update request sent by the UE;
  • the determining module 805 is configured to: after the request receiving module 804 receives the key update request sent by the UE, determine whether the COUNT value used by the PDCP layer of any DRB or SRB of the UE reaches the COUNT value that triggers the UE to apply for the key update;
  • the second transmission module 806 is configured to send a reply response message to the UE when the result of the determining module 805 is YES, where the reply response message carries the key update indication information.
  • the apparatus for data transmission provided by this embodiment may further include:
  • the monitoring module 807 is configured to monitor a COUNT value used by a PDCP layer of any DRB or SRB of the UE;
  • the notification module 808 is configured to notify the UE by using a paging message when the monitoring module 807 detects that the COUNT value used by the PDCP layer of any DRB or SRB of the UE in the preset state reaches the COUNT value that triggers the UE to apply for the key update. And updating the key, wherein the paging message carries the key update indication information; or the UE is notified to update the key by using an RRC connection reconfiguration message, where the RRC connection reconfiguration message carries the key update indication information.
  • an embodiment of the present disclosure further provides an apparatus for data transmission, including a processor and a memory storing processor-executable instructions, when the instruction is executed by the processor, performing the following operations:
  • the sending data is processed in a preset state; wherein, the preset state refers to a state in which the interface between the UE and the base station is disconnected and the interface between the base station and the core network remains connected.
  • the sending data is processed by using a preset configuration manner, which may include at least one of the following:
  • the sending data is processed on the user plane according to the configured manner of the radio bearer in the saved connected state;
  • the sending data is processed on the user plane according to a predetermined radio bearer configuration manner
  • the user plane When the UE is in the preset state, the user plane processes the transmission data according to the configuration manner of the radio bearer of the target base station.
  • the key update process is initiated.
  • an embodiment of the present disclosure further provides an apparatus for data transmission, including a processor and a memory storing processor-executable instructions, when the instruction is executed by the processor, performing the following operations:
  • the configuration mode of the preset state is indicated to the UE, so that the UE processes the sending data in the configuration mode in the preset state, where the preset state means that the interface between the UE and the base station is disconnected and the interface between the base station and the core network remains connected. status.
  • the UE When it is detected that the COUNT value used by the PDCP layer of any DRB or SRB of the UE in the preset state reaches the COUNT value that triggers the UE to apply for the key update, the UE is notified by the paging message to update the key, where the paging message Carrying the key update indication information; or notifying the UE to update the key by using an RRC connection reconfiguration message, wherein the RRC connection reconfiguration message carries the key update indication information.
  • the embodiment of the present disclosure further provides a system for data transmission, which may include: a UE and a base station; wherein the UE may refer to the description of the embodiment shown in FIG. 7, and the base station may refer to the embodiment shown in FIG. 8 or FIG. Description, so I won't go into details here.
  • embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement a method of data transmission applied to a UE side.
  • Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement a method of data transmission applied to a base station side.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • the present disclosure is not limited to any specific form of combination of hardware and software.

Abstract

本公开公开了一种数据传输的方法、装置及系统；上述数据传输的方法，包括：UE在预设态下，采用预设态的配置方式处理发送数据，其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。本公开提出了UE在预设态对发送数据的处理方式，进而实现在预设态采用非授权的传输方式时，便于适应UE在预设态的移动性。

Description

一种数据传输的方法、装置及系统 技术领域
本公开涉及无线通信技术领域，尤指一种数据传输的方法、装置及系统。
背景技术
长期演进系统(LTE，Long Term Evolution)主要包括以下三个部分：用户设备(UE，User Equipment)、核心网(CN，Core Network)和基站(eNB，Evolved Node B)。其中，核心网中的移动管理实体(MME，Mobility Management Entity)主要负责信令的传输，服务网关(SGW，Serving GateWay)主要负责数据的传输。UE和eNB之间的接口为Uu口，eNB之间通过X2口互相连接，eNB与核心网之间的接口为S1口，如图1所示。其中，E-UTRAN(Evolved UMTS Terrestrial Radio Access Network，演进的UMTS陆地无线接入网)包括多个eNB。
UE、eNB和MME的协议架构如图2所示。对于UE，协议层RRC(Radio Resource Control，无线资源控制)、PDCP(Packet Data Convergence Protocol，分组数据汇聚协议)、RLC(Radio Link Control，无线链路控制)、MAC(Medium Access Control，媒体访问控制)和PHY(Physical Layer，物理层)属于AS(Access Stratum，接入层)，而AS的高层为NAS(Non Access Stratum，非接入层)。
按照目前的协议规定，UE要与eNB通信，首先要接入该eNB，也就是发起随机接入过程。如图3所示，随机接入(Random Access)过程包括以下四个步骤：
步骤301：UE通过系统信息或者RRC信令获知用于随机接入的可用的前导序列(Preamble)以及发送前导序列的时频位置，然后，在可用的资源内，随机选择前导序列和发送前导序列的时频位置，发送前导序列给eNB；
步骤302：eNB通过随机接入前导序列采用的时频位置，推断UE可能采用的RA-RNTI(Random Access Radio Network Temporary Identity，随机接入无线网络临时标识)，并用RA-RNTI解码前导序列，当eNB成功解码出前导序列后，给UE回复随机接入响应，其中，随机接入响应中携带上行授权等信息；
步骤303：UE在上行授权的资源上发送上行数据，并携带UE的标识等信息；
步骤304：eNB在上行授权的资源上解析上行数据，确认UE，解决冲突，并发送竞争决议标识给UE。
然而，上述过程的延时较长，而且非正交技术目前已经得到了各个公司的认可，因此，随机接入过程也得到了技术上的更新，可以简化为两步过程。UE可在非授权的情况下，将数据发送给eNB。如图4所示，非授权上行发送的过程包括以下两个步骤：
步骤401：UE在非授权的资源内，选择资源，发送上行数据；
步骤402：eNB解析出上行数据后，回复响应或者数据。
其中，本方案可以包括两种方式：一种是UE在发送上行数据的同时还要发送前导序列；另一种是UE只发送上行数据。
可见，相较于图3所示的随机接入过程，图4所示的非授权发送上行数据过程的时延更小、更灵活。其中，当UE处于非激活态，UE与基站的Uu口连接已经断开，但是依旧保持UE的S1口连接，则UE可以利用这种非授权的发送上行数据的方法，以减少数据包的时延，降低信令的负荷。
然而，由于UE在非激活态采用非授权发送方式下的发送数据与传统的在连接态下的发送数据不同，而且UE在非激活态是移动的，可以重选到其他小区，在其他小区采用非授权方式下的发送数据，因此，UE处理发送数据的过程要适应UE的移动性。另外，UE发送很多数据包，会使得业务的PDCP层使用的COUNT值达到最大值，引起密钥的更新。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本公开实施例提供一种数据传输的方法、装置及系统，提供了UE在预设态对发送数据的处理方式。
本公开一方面提供一种数据传输的方法，包括：UE在预设态下，采用预设态的配置方式处理发送数据；其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
根据本公开的实施例，所述UE在预设态下，采用预设态的配置方式处理发送数据，可以包括：UE在预设态下，在用户面按照保存的连接态下的无线承载的配置方式处理所述发送数据。
根据本公开的实施例，所述UE在预设态下，在用户面按照保存的连接态下的无线承载的配置方式处理所述发送数据，可以包括：
UE对可支持传输的无线承载，进行以下至少之一操作：
重置MAC层；保持PDCP层状态；保持RLC层状态；挂起所述无线承载；在MAC层和PHY应用缺省配置参数。
根据本公开的实施例，所述保持PDCP层状态可以包括：保持PDCP SN、COUNT值、下一跳链接计数(NCC)、健壮性头压缩(ROHC)状态以及PDCP配置信息；
所述保持RLC状态可以包括：保持RLC SN、RLC模式以及RLC配置信息。
根据本公开的实施例，所述UE在预设态下，采用预设态的配置方式处理发送数据，可以包括：UE在预设态下，在用户面按照预定的无线承载的配置方式处理所述发送数据。
根据本公开的实施例，所述UE在预设态下，在用户面按照预定的无线承载的配置方式处理所述发送数据，可以包括：
UE对可支持传输的无线承载，进行以下至少之一操作：
重置MAC层；重建RLC层；重建PDCP层；挂起所述无线承载；更新密钥；在PDCP层应用非确认(UM)模式的配置参数；在RLC层应用UM模式的配置参数；在MAC层和PHY应用缺省配置参数。
根据本公开的实施例，所述UE在预设态下，采用预设态的配置方式处理发送数据，可以包括：UE在预设态下，在用户面按照目标基站的无线承载的配置方式处理所述发送数据；其中，所述目标基站为UE可能小区重选到的基站。
根据本公开的实施例，所述UE在预设态下，在用户面按照目标基站的无线承载的配置方式处理所述发送数据，可以包括：
UE对可支持传输的无线承载，进行以下至少之一操作：
重置MAC层；重建RLC层；重建PDCP层；挂起所述无线承载；更新密钥；在PDCP层应用目标基站的配置参数；在RLC层应用目标基站的配置参数；在MAC层和PHY应用缺省配置参数。
根据本公开的实施例，所述无线承载可以包括以下至少之一：DRB、SRB。
根据本公开的实施例，数据传输的方法还可以包括：
当UE处于所述预设态下，且任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，所述UE发起密钥更新过程。
根据本公开的实施例，所述触发UE申请密钥更新的COUNT值为预设的，或者，是由基站通过系统信息广播的，或者，是由基站通过RRC信令配置的。
根据本公开的实施例，所述UE发起密钥更新过程，可以包括：
UE发送RRC信令，其中，所述RRC信令携带密钥更新请求。
根据本公开的实施例，所述RRC信令可以包括以下之一：RRC连接重建立请求消息(RRCConnectionReestablishmentRequest)、RRC连接恢复请求消息(RRCConnectionResumeRequest)、自定义的新消息。
根据本公开的实施例，数据传输的方法还可以包括：
UE接收携带密钥更新指示信息的寻呼消息；
UE接收到所述寻呼消息后，进行以下至少之一操作：
重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；
在执行上述操作之后，所述UE保持在预设态下。
根据本公开的实施例，数据传输的方法还可以包括：
UE接收携带密钥更新指示信息的RRC连接重配消息；
所述UE接收到所述RRC连接重配消息后，进行以下至少之一操作：
重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；
在执行上述操作之后，所述UE采用非授权的传输方式向基站发送RRC连接重配完成消息，并保持在预设态下。
根据本公开的实施例，数据传输的方法还可以包括：
UE接收到RRC连接重配消息后，执行以下至少之一操作：
重置MAC层；重建RLC层；重建PDCP层；按照RRC连接重配消息中携带的配置信息更新预设态的配置方式；
在执行上述操作之后，UE采用非授权的传输方式向目标小区的基站发送RRC连接重配完成消息，切换到目标小区，进入连接态。
根据本公开的实施例，所述采用预设态的配置方式处理发送数据之后，数据传输的方法还可以包括：UE采用非授权的传输方式，发射所述发送数据。
本公开另一方面还提供一种数据传输的方法，包括：
基站向UE指示预设态的配置方式，以使所述UE在预设态采用所述配置方式处理发送数据，其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
根据本公开的实施例，所述数据传输的方法还可以包括：所述基站指示UE进入预设态。
根据本公开的实施例，所述数据传输的方法还可以包括：
所述基站通过系统信息广播或者RRC信令发送触发UE申请密钥更新的COUNT值，以使处于预设态下的UE，在任一DRB或SRB的PDCP层使用的COUNT值达到所述触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
根据本公开的实施例，所述数据传输的方法还可以包括：
所述基站在接收到所述UE发送的密钥更新请求之后，判断所述UE的任一DRB或SRB的PDCP层使用的COUNT值是否达到所述触发UE申请密钥更新的COUNT值，若是，则向所述UE发送回复响应消息，其中，所述回复响应消息携带密钥更新指示信息。
根据本公开的实施例，所述数据传输的方法还可以包括：
所述基站监测UE的任一DRB或SRB的PDCP层使用的COUNT值；
在监测到处于预设态下的UE的任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，所述基站通过寻呼消息通知所述UE更新密钥， 其中，所述寻呼消息携带密钥更新指示信息；或者，所述基站通过RRC连接重配消息通知所述UE更新密钥，其中，所述RRC连接重配消息携带密钥更新指示信息。
本公开又一方面还提供一种数据传输的装置，应用于UE，包括：
第一处理模块，用于当UE处于预设态时，采用预设态的配置方式处理发送数据；其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
根据本公开的实施例，所述第一处理模块，用于通过以下至少之一方式采用预设态的配置方式处理发送数据：
在用户面按照保存的连接态下的无线承载的配置方式处理所述发送数据；
在用户面按照预定的无线承载的配置方式处理所述发送数据；
在用户面按照目标基站的无线承载的配置方式处理所述发送数据。
根据本公开的实施例，所述数据传输的装置还可以包括：
第二处理模块，用于当UE处于所述预设态下，且任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
根据本公开的实施例，所述数据传输的装置还可以包括：
接收模块，用于接收携带密钥更新指示信息的寻呼消息，或者，接收携带密钥更新指示信息的RRC连接重配消息；
第三处理模块，用于在所述接收模块接收到所述寻呼消息后，进行以下至少之一操作：重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；以及在执行上述操作之后，保持在预设态下；
或者，用于在所述接收模块接收到所述RRC连接重配消息后，进行以下至少之一操作：重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；以及在执行上述操作之后，采用非授权的传输方式向基站发送RRC连接重配完成消息，并保持在预设态下。
根据本公开的实施例，所述数据传输的装置还可以包括：发射模块，用于采用非授权的传输方式，发射所述发送数据。
本公开又一方面还提供一种数据传输的装置，应用于基站，包括：
第一指示模块，用于向用户设备UE指示预设态的配置方式，以使所述UE在预设态采用所述配置方式处理发送数据，其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
根据本公开的实施例，所述数据传输的装置还可以包括：
第二指示模块，用于指示UE进入预设态。
根据本公开的实施例，所述数据传输的装置还可以包括：
第一传输模块，用于通过系统信息广播或者RRC信令发送触发UE申请密钥更新的COUNT值，以使处于预设态下的UE，在任一DRB或SRB的PDCP层使用的COUNT值达到所述触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
根据本公开的实施例，所述数据传输的装置还可以包括：
请求接收模块，用于接收所述UE发送的密钥更新请求；
判断模块，用于在所述请求接收模块接收到所述UE发送的密钥更新请求之后，判断所述UE的任一DRB或SRB的PDCP层使用的COUNT值是否达到触发UE申请密钥更新的COUNT值；
第二传输模块，用于在所述判断模块的结果为是时，向所述UE发送回复响应消息，其中，所述回复响应消息携带密钥更新指示信息。
根据本公开的实施例，所述数据传输的装置还可以包括：
监测模块，用于监测UE的任一DRB或SRB的PDCP层使用的COUNT值；
通知模块，用于在所述监测模块监测到处于预设态下的UE的任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，通过寻呼消息通知所述UE更新密钥，其中，所述寻呼消息携带密钥更新指示信息；或者，通过RRC连接重配消息通知所述UE更新密钥，其中，所述RRC连接重配消息携带密钥更新指示信息。
本公开又一方面还提供一种数据传输的系统，包括：UE以及基站；
所述基站用于向UE指示预设态的配置方式；
所述UE用于在预设态采用所述配置方式处理发送数据；
根据本公开的实施例，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
此外，本公开又一方面还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现应用于UE侧的数据传输的方法。
本公开再一方面还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现应用于基站侧的数据传输的方法。
在本公开的实施例中，UE在预设态下，采用预设态的配置方式处理发送数据，其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。本公开实施例提出了UE在预设态对发送数据的处理方式，进而实现在预设态采用非授权的传输方式时，便于适应UE在预设态的移动性。
一些实现方式中，当UE处于预设态下，且任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，进行密钥更新过程，从而实现及时更新密钥。
本公开的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本公开而了解。本公开的目的和其他优点可通过在说明书、权利要 求书以及附图中所特别指出的结构来实现和获得。
附图说明
附图用来提供对本公开实施例的技术方案的进一步理解，并且构成说明书的一部分，与本公开的实施例一起用于解释本公开的技术方案，并不构成对本公开技术方案的限制。
图1为LTE的架构图；
图2为UE、eNB和MME的协议架构图；
图3为LTE中的随机接入流程图；
图4为非授权上行发送的流程图；
图5为本公开实施例提供的一种数据传输的方法的流程图；
图6为本公开实施例提供的另一种数据传输的方法的流程图；
图7为本公开实施例提供的一种数据传输的装置的示意图；
图8为本公开实施例提供的另一种数据传输的装置的示意图一；
图9为本公开实施例提供的另一种数据传输的装置的示意图二。
具体实施方式
以下结合附图对本公开实施例进行详细说明，应当理解，以下所说明的实施例仅用于说明和解释本公开，并不用于限定本公开。需要说明的是，在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互任意组合。
在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行。并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
本公开实施例提供一种数据传输的方法，如图5所示，包括：
步骤501：UE在预设态下，采用预设态的配置方式处理发送数据；
其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。比如，在LTE中，UE与基站之间的接口为Uu口，基站与核心网之间的接口为S1口，即UE处于预设态时，UE的Uu口断开且S1口保持连接。
一些实现方式中，步骤501可以包括：
UE在预设态下，在用户面按照保存的连接态下的无线承载的配置方式处理发送数据。
在本实现方式中，UE对可支持传输的无线承载，可以进行以下至少之一操作：
重置MAC层；保持PDCP层状态；保持RLC层状态；挂起无线承载；在MAC层和PHY应用缺省配置参数。
在本实现方式中，保持PDCP层状态，可以包括：保持PDCP序号(SN，Serial Number)、COUNT值、下一跳链接计数(NCC，nextHopChainingCount)、健壮性头压缩(ROHC，Robust Header Compression)状态以及PDCP配置信息；
保持RLC状态，可以包括：保持RLC SN、RLC模式以及RLC配置信息。
在本实现方式中，无线承载可以包括以下至少之一：数据无线承载(DRB，Data Radio Bearer)、信令无线承载(SRB，Signal Radio Bearer)。
一些实现方式中，步骤501可以包括：
UE在预设态下，在用户面按照预定的无线承载的配置方式处理发送数据。
在本实现方式中，UE对可支持传输的无线承载，可以进行以下至少之一操作：
重置MAC层；重建RLC层；重建PDCP层；挂起无线承载；更新密钥；在PDCP层应用非确认(UM)模式的配置参数；在RLC层应用UM模式的配置参数；在MAC层和PHY应用缺省配置参数。
在本实现方式中，无线承载可以包括以下至少之一：DRB、SRB。
一些实现方式中，步骤501可以包括：
UE在预设态下，在用户面按照目标基站的无线承载的配置方式处理发送数据；其中，目标基站为UE可能小区重选到的基站。
在本实现方式中，UE对可支持传输的无线承载，进行以下至少之一操作：
重置MAC层；重建RLC层；重建PDCP层；挂起无线承载；更新密钥；在PDCP层应用目标基站的配置参数；在RLC层应用目标基站的配置参数；在MAC层和PHY应用缺省配置参数。
在本实现方式中，无线承载可以包括以下至少之一：DRB、SRB。
一些实现方式中，本实施例提供的数据传输的方法还可以包括：
当UE处于预设态下，且任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，UE发起密钥更新过程。
在本实现方式中，触发UE申请密钥更新的COUNT值可以为预设的，或者，可以是由基站通过系统信息广播的，或者，是由基站通过RRC信令配置的。
在本实现方式中，UE发起密钥更新过程，可以包括：
UE发送无线资源控制(RRC，Radio Resource Control)信令，其中，RRC信令携带密钥更新请求。
其中，RRC信令可以包括以下之一：RRC连接重建立请求消息(RRCConnectionReestablishmentRequest)、RRC连接恢复请求消息(RRCConnectionResumeRequest)、自定义的新消息。
一些实现方式中，本实施例提供的数据传输的方法还可以包括：
UE接收携带密钥更新指示信息的寻呼消息；
UE接收到携带密钥更新指示信息的寻呼消息后，进行以下至少之一操作：
重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；
在执行上述操作之后，UE保持在预设态下。
一些实现方式中，本实施例提供的数据传输的方法还可以包括：
UE接收携带密钥更新指示信息的RRC连接重配消息；
UE接收到携带密钥更新指示信息的RRC连接重配消息后，进行以下至少之一操作：
重置MAC层；重建RLC层；更新密钥；将PDCH层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；
在执行上述操作之后，UE采用非授权的传输方式向基站发送RRC连接重配完成消息，并保持在预设态下。
一些实现方式中，本实施例提供的数据传输的方法还可以包括：
UE接收到RRC连接重配消息后，执行以下至少之一操作：
重置MAC层；重建RLC层；重建PDCP层；按照RRC连接重配消息中携带的配置信息更新预设态的配置方式；
在执行上述操作之后，UE采用非授权的传输方式向目标小区的基站发送RRC连接重配完成消息，切换到目标小区，进入连接态。
一些实现方式中，步骤501之后，本实施例提供的数据传输的方法还可以包括：
步骤502：UE采用非授权的传输方式，发射处理后的发送数据。
下面通过多个实施例对本公开进行举例说明。需要说明的是，在下面的实施例中，假设UE处于预设态，在预设态下，UE的Uu口断开且S1口保持连接。
实施例一
在本实施例中，UE在预设态下进行非授权的传输时，用户面对数据包可以按照原有连接态下的DRB和SRB的配置方式进行处理。
当基站指示UE进入预设态时，基站会根据UE的能力、业务的类型，配置UE的哪些业务可以支持非授权的传输。比如，对于某个UE，基站通过RRC消息指示UE进入预设态，且RRC消息携带可以支持非授权的传输的DRB和SRB清单(list)，其中，RRC消息可以包括以下之一：RRC连接释放消息(RRCConnectionRelease)、RRC连接重配消息(RRCConnectionReconfiguration)、RRC连接重建立消息(RRCConnectionReestablishment)以及自定义的新消息。
当UE处于预设态时，UE会保存原来连接态下的上下文以及DRB和SRB的配置方式。当基站配置UE的某些DRB和SRB支持非授权的传输时，UE对这些DRB和SRB进行重置MAC层、保持RLC层和PDCP层状态的操作。比如，对于某个UE，UE收到来自基站的RRC消息后，会根据保存的连接态下的配置方式，对可支持非授权的传输的DRB和SRB，进行如下操作：重置MAC层；保持PDCP层状态；保持RLC层状态；挂起DRB和SRB；在MAC层和PHY应用缺省配置参数等。其中，保持PDCP层状态可以包括：保持PDCP序号(SN，Serial Number)、COUNT值、NCC(next Hop Chaining Count， 下一跳链接计数)、ROHC(Robust Header Compression，健壮性头压缩)状态、PDCP配置信息等；保持RLC层状态可以包括：保持RLC SN、RLC模式、RLC配置信息等。
实施例二
在本实施例中，UE在预设态下进行非授权的传输时，用户面对数据包可以按照预定的DRB和SRB的配置方式进行处理。
当基站配置UE进入预设态时，基站会根据UE的能力、业务的类型，配置UE的哪些业务可以支持非授权的传输，而且配置在非授权状态下对数据包的处理方式。在非授权的传输过程中，为了减少复杂度，可以采用特定的处理方式，如UM模式。比如，对于某个UE，基站通过RRC消息配置UE进入预设态，且RRC消息携带可以支持非授权的传输的DRB和SRB list，以及这些DRB和SRB的配置方式，其中，可以包括UM模式的PDCP配置方式、UM模式的RLC配置方式，同时还可携带密钥更新信息NCC(nextHopChainingCount)；其中，RRC消息可以包括以下之一：RRC连接释放消息(RRCConnectionRelease)、RRC连接重配消息(RRCConnectionReconfiguration)、RRC连接重建立消息(RRCConnectionReestablishment)以及自定义的新消息。
当UE处于预设态时，且基站配置UE的某些DRB和SRB支持非授权的传输时，UE会对这些DRB和SRB进行重置MAC层、重建RLC层、重建PDCP层和应用新配置参数的操作。比如，对于某个UE，UE收到来自基站的RRC连接重配消息，会根据其中携带的配置方式，对可支持非授权的传输的DRB和SRB，进行如下操作：重置MAC层；重建RLC层；重建PDCP层；挂起DRB和SRB；更新密钥；在PDCP层应用UM模式的配置参数；在RLC层应用UM模式的配置参数；在MAC层和PHY应用缺省配置参数等。
实施例三
在本实施例中，UE在预设态下进行非授权的传输时，用户面对数据包可以按照目标基站的配置方式进行处理。
原基站通过UE的测量报告，判断出UE可能会移动到的目标基站，并获得UE在目标基站的配置方式。原基站通过RRC信令再配置给UE。
目标基站会根据UE的特性和自身的情况，配置UE的哪些业务可以支持非授权的传输，而且配置在非授权状态下对数据包的处理方式。比如，对于某个UE，原基站通过RRC消息配置UE进入预设态，且RRC消息携带可以支持预设态的目标基站list，以及每个目标基站下的配置参数，可以包括：可以支持非授权的传输的DRB和SRB list，以及这些DRB和SRB的配置方式，同时还可携带密钥更新信息NCC(nextHopChainingCount)。其中，RRC消息可以包括以下之一：RRC连接释放消息(RRCConnectionRelease)、RRC连接重配消息(RRCConnectionReconfiguration)、RRC连接重建立消息(RRCConnectionReestablishment)以及自定义的新消息。
当UE处于预设态时，且原基站配置UE在目标基站的某些DRB和SRB支持非授权的传输时，UE会对这些DRB和SRB进行重置MAC层、重建RLC层、重建PDCP层、 和应用目标基站配置参数的操作。例如：对于某个处于预设态的UE，如果UE有数据传输，且UE选择了某个目标基站，UE会根据目标基站的配置方式，对可支持非授权的传输的DRB和SRB，进行如下操作：重置MAC层；重建RLC层；重建PDCP层；挂起DRB和SRB；更新密钥；在PDCP层应用目标基站的配置参数；在RLC层应用目标基站的配置参数；在MAC层和PHY应用缺省配置参数等。
实施例四
在本实施例中，当UE处于预设态下，其某个DRB或SRB的PDCP层使用的COUNT值可能会达到最大值，需要翻转，而COUNT值的翻转会导致密钥的更新。此时，UE可以向基站申请更新密钥。
基站可以通过系统信息广播或者RRC信令配置触发UE申请密钥更新的COUNT值，在UE的某个DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，UE即向基站申请更新密钥。或者，通过预定义的方式确定触发UE申请密钥更新的COUNT值，在UE的某个业务的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，UE即向基站申请更新密钥。
UE向基站申请更新密钥。其中，UE向基站发送RRC信令，RRC信令可以携带密钥更新请求。其中，RRC信令可以包括以下之一：RRC连接重建立请求消息(RRCConnectionReestablishmentRequest)、RRC连接恢复请求消息(RRCConnectionResumeRequest)、自定义的新消息。
基站接收到UE发送的密钥更新请求后，判断UE的某个DRB或SRB的PDCP层使用的COUNT值是否即将翻转，如果是，则向UE发起回复响应消息，并在回复响应消息中指示新的NCC。
实施例五
在本实施例中，鉴于基站和UE的COUNT值是同步的，基站也可以发起密钥更新。
当基站监测到UE的某个DRB或SRB的PDCP层使用的COUNT值即将翻转，且UE处于预设态下，基站可通过寻呼消息来促使UE更新密钥。基站将需要更新密钥的UE的标识添加到寻呼消息中，而且，寻呼消息还可以添加密钥更新指示信息，如NCC。
处于预设态下的UE，如果接收到属于该UE的寻呼消息，且寻呼消息中携带密钥更新指示信息，则UE的RRC层指示PDCP层更新密钥。比如，UE可以执行以下操作：重置MAC层、重建RLC层、更新密钥、将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；而且，UE在执行上述操作之后，继续保持在预设态下。
实施例六
在本实施例中，当UE处于预设态下进行非授权的传输，其某个DRB或SRB的PDCP层使用的COUNT值可能会达到最大值，需要翻转，基站可以通过RRC信令更新密钥，并指示UE继续留在预设态下。
对于某个UE，接入处于预设态下，选择了一个小区，并进行非授权的传输，当某个DRB或SRB的PDCP层使用的COUNT值即将达到最大值，则基站可以决定更新密钥，给UE发送RRC信令(如RRC连接重配消息)，通知UE更新密钥。
UE接收到RRC连接重配消息后，可以执行以下操作：重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；随后，UE可以采用非授权的传输方式给基站发送RRC连接重配完成消息，并继续保持在预设态下。
实施例七
在本实施例中，当UE处于预设态下，UE进行小区重选，选择了新的小区，并进行非授权的传输。目标小区接收到UE的上行数据包，会根据其中携带的UE标识等信息，找到UE的原小区，并通过X2口，将UE的上行数据包传递给原小区。
如果原小区判断出，UE的某个DRB或SRB的PDCP层使用的COUNT值可能会达到最大值，需要翻转，原小区可以发起X2的切换过程。首先，原小区向目标小区发送切换请求；如果目标小区同意切换，向原小区返回切换确认消息；原小区为UE生成指示切换到目标小区的RRC连接重配消息，并通过X2口，传递给目标小区；由目标小区通过非授权的上行发送的下行反馈将RRC连接重配消息发送给UE。
UE接收到RRC连接重配消息后，执行切换到目标小区的过程，可以进行以下操作：重置MAC层；重建RLC层；重建PDCP层；按照RRC连接重配消息中携带的配置信息更新预设态的配置方式；随后，UE可以采用非授权的传输方式给目标小区的基站发送RRC连接重配完成消息，并进入连接态。
综上可知，本实施例提出了UE在预设态采用非授权的传输方式时，对发送数据的处理方式，从而既便于适应UE在激活态的移动性，又能及时更新密钥。
此外，本公开实施例还提供一种数据传输的方法，如图6所示，包括：
步骤601：基站向UE指示预设态的配置方式，以使UE在预设态采用配置方式处理发送数据；
其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。比如，在LTE中，UE与基站之间的接口为Uu口，基站与核心网之间的接口为S1口，即UE处于预设态时，UE的Uu口断开且S1口保持连接。
其中，本实施例提供的数据传输的方法还可以包括：
步骤600：基站指示UE进入预设态。
一些实现方式中，本实施例提供的数据传输的方法还可以包括：
基站通过系统信息广播或者RRC信令发送触发UE申请密钥更新的COUNT值，以使处于预设态下的UE，在任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
一些实现方式中，本实施例提供的数据传输的方法还可以包括：
基站在接收到UE发送的密钥更新请求之后，判断UE的任一DRB或SRB的PDCP层使用的COUNT值是否达到触发UE申请密钥更新的COUNT值，若是，则向UE发送回复响应消息，其中，回复响应消息携带密钥更新指示信息。
一些实现方式中，本实施例提供的数据传输的方法还可以包括：
基站监测UE的任一DRB或SRB的PDCP层使用的COUNT值；
在监测到处于预设态下的UE的任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，基站通过寻呼消息通知UE更新密钥，其中，寻呼消息携带密钥更新指示信息；或者，基站通过RRC连接重配消息通知UE更新密钥，其中，RRC连接重配消息携带密钥更新指示信息。
另外，关于本实施例提供的数据传输的方法的详细说明可以参照上述实施例一至七，故于此不再赘述。
此外，本公开实施例还提供一种数据传输的装置，如图7所示，应用于UE，包括：
第一处理模块701，用于当UE处于预设态时，采用预设态的配置方式处理发送数据；
其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。
一些实现方式中，第一处理模块701，可以用于通过以下至少之一方式采用预设态的配置方式处理发送数据：
在用户面按照保存的连接态下的无线承载的配置方式处理发送数据；
在用户面按照预定的无线承载的配置方式处理发送数据；
在用户面按照目标基站的无线承载的配置方式处理发送数据。
一些实现方式中，本实施例提供的数据传输的装置还可以包括：
第二处理模块702，用于当UE处于预设态下，且任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
其中，触发UE申请密钥更新的COUNT值可以为预设的，或者，是由基站通过系统信息广播的，或者，是由基站通过RRC信令配置的。
一些实现方式中，本实施例提供的数据传输的装置还可以包括：
接收模块703，用于接收携带密钥更新指示信息的寻呼消息，或者，接收携带密钥更新指示信息的RRC连接重配消息；
第三处理模块704，用于在接收模块703接收到携带密钥更新指示信息的寻呼消息后，进行以下至少之一操作：重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配置参数；以及在执行上述操作之后，保持在预设态下；
或者，用于在接收模块703接收到携带密钥更新指示信息的RRC连接重配消息后，进行以下至少之一操作：重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY 应用缺省配置参数；以及在执行上述操作之后，采用非授权的传输方式向基站发送RRC连接重配完成消息，并保持在预设态下。
一些实现方式中，本实施例提供的数据传输的装置还可以包括：发射模块705，用于采用非授权的传输方式，发射第一处理模块701处理后的发送数据。
另外，关于本实施例提供的数据传输的装置的相关描述可以参照上述UE侧的方法实施例，故于此不再赘述。
此外，本公开实施例还提供一种数据传输的装置，如图8所示或图9所示，应用于基站，包括：
第一指示模块801，用于向UE指示预设态的配置方式，以使UE在预设态采用配置方式处理发送数据；
其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。
一些实现方式中，本实施例提供的数据传输的装置还可以包括：
第二指示模块802，用于指示UE进入预设态。
一些实现方式中，如图8所示，本实施例提供的数据传输的装置还可以包括：
第一传输模块803，用于通过系统信息广播或者RRC信令发送触发UE申请密钥更新的COUNT值，以使处于预设态下的UE，在任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
一些实现方式中，如图8所示，本实施例提供的数据传输的装置还可以包括：
请求接收模块804，用于接收UE发送的密钥更新请求；
判断模块805，用于在请求接收模块804接收到UE发送的密钥更新请求之后，判断UE的任一DRB或SRB的PDCP层使用的COUNT值是否达到触发UE申请密钥更新的COUNT值；
第二传输模块806，用于在判断模块805的结果为是时，向UE发送回复响应消息，其中，回复响应消息携带密钥更新指示信息。
一些实现方式中，如图9所示，本实施例提供的数据传输的装置还可以包括：
监测模块807，用于监测UE的任一DRB或SRB的PDCP层使用的COUNT值；
通知模块808，用于在监测模块807监测到处于预设态下的UE的任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，通过寻呼消息通知UE更新密钥，其中，寻呼消息携带密钥更新指示信息；或者，通过RRC连接重配消息通知UE更新密钥，其中，RRC连接重配消息携带密钥更新指示信息。
另外，关于本实施例提供的数据传输的装置的相关描述可以参照上述基站侧的方法实施例，故于此不再赘述。
此外，本公开实施例还提供一种数据传输的装置，包括处理器以及存储有处理器可执行指令的存储器，当指令被处理器执行时，执行如下操作：
当UE在预设态时，采用预设态的配置方式处理发送数据；其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。
其中，当UE在预设态时，采用预设态的配置方式处理发送数据，可以包括以下至少之一：
当UE在预设态时，在用户面按照保存的连接态下的无线承载的配置方式处理所述发送数据；
当UE在预设态时，在用户面按照预定的无线承载的配置方式处理发送数据；
当UE在预设态时，在用户面按照目标基站的无线承载的配置方式处理发送数据。
其中，当指令被处理器执行时，还可以执行如下操作：
当UE处于预设态下，且任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
另外，关于本实施例提供的数据传输的装置的相关描述可以参照上述UE侧的方法实施例，故于此不再赘述。
此外，本公开实施例还提供一种数据传输的装置，包括处理器以及存储有处理器可执行指令的存储器，当指令被处理器执行时，执行如下操作：
向UE指示预设态的配置方式，以使UE在预设态采用配置方式处理发送数据，其中，预设态指UE与基站之间的接口断开且基站与核心网之间的接口保持连接的状态。
其中，当指令被处理器执行时，还可以执行如下操作：
监测UE的任一DRB或SRB的PDCP层使用的COUNT值；
在监测到处于预设态下的UE的任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，通过寻呼消息通知UE更新密钥，其中，寻呼消息携带密钥更新指示信息；或者，通过RRC连接重配消息通知UE更新密钥，其中，RRC连接重配消息携带密钥更新指示信息。
另外，关于本实施例提供的数据传输的装置的相关描述可以参照上述基站侧的方法实施例，故于此不再赘述。
此外，本公开实施例还提供一种数据传输的系统，可以包括：UE以及基站；其中，UE可以参照如图7所示实施例的描述，基站可以参照如图8或图9所示实施例的描述，故于此不再赘述。
此外，本公开实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现应用于UE侧的数据传输的方法。
本公开实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现应用于基站侧的数据传输的方法。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来 实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本公开不限制于任何特定形式的硬件和软件的结合。
以上显示和描述了本公开的基本原理和主要特征和本公开的优点。本公开不受上述实施例的限制，上述实施例和说明书中描述的只是说明本公开的原理，在不脱离本公开精神和范围的前提下，本公开还会有各种变化和改进，这些变化和改进都落入要求保护的本公开范围内。

Claims (33)

  1. 一种数据传输的方法，包括：
    用户设备UE在预设态下，采用预设态的配置方式处理发送数据；
    其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
  2. 根据权利要求1所述的方法，其中，所述UE在预设态下，采用预设态的配置方式处理发送数据，包括：
    UE在预设态下，在用户面按照保存的连接态下的无线承载的配置方式处理所述发送数据。
  3. 根据权利要求2所述的方法，其中，所述UE在预设态下，在用户面按照保存的连接态下的无线承载的配置方式处理所述发送数据，包括：
    UE对可支持传输的无线承载，进行以下至少之一操作：
    重置媒体接入控制MAC层；保持分组数据汇聚协议PDCP层状态；保持无线链路控制RLC层状态；挂起所述无线承载；在MAC层和物理层PHY应用缺省配置参数。
  4. 根据权利要求3所述的方法，其中，所述保持PDCP层状态，包括：保持PDCP序号SN、COUNT值、下一跳链接计数NCC、健壮性头压缩ROHC状态以及PDCP配置信息；所述保持RLC状态，包括：保持RLC SN、RLC模式以及RLC配置信息。
  5. 根据权利要求1所述的方法，其中，所述UE在预设态下，采用预设态的配置方式处理发送数据，包括：
    UE在预设态下，在用户面按照预定的无线承载的配置方式处理所述发送数据。
  6. 根据权利要求5所述的方法，其中，所述UE在预设态下，在用户面按照预定的无线承载的配置方式处理所述发送数据，包括：
    UE对可支持传输的无线承载，进行以下至少之一操作：
    重置媒体接入控制MAC层；重建无线链路控制RLC层；重建分组数据汇聚协议PDCP层；挂起所述无线承载；更新密钥；在PDCP层应用非确认UM模式的配置参数；在RLC层应用UM模式的配置参数；在MAC层和物理层PHY应用缺省配置参数。
  7. 根据权利要求1所述的方法，其中，所述UE在预设态下，采用预设态的配置方式处理发送数据，包括：
    UE在预设态下，在用户面按照目标基站的无线承载的配置方式处理所述发送数据； 其中，所述目标基站为UE可能小区重选到的基站。
  8. 根据权利要求7所述的方法，其中，所述UE在预设态下，在用户面按照目标基站的无线承载的配置方式处理所述发送数据，包括：
    UE对可支持传输的无线承载，进行以下至少之一操作：
    重置媒体接入控制MAC层；重建无线链路控制RLC层；重建分组数据汇聚协议PDCP层；挂起所述无线承载；更新密钥；在PDCP层应用目标基站的配置参数；在RLC层应用目标基站的配置参数；在MAC层和物理层PHY应用缺省配置参数。
  9. 根据权利要求2至8任一项所述的方法，其中，所述无线承载包括以下至少之一：数据无线承载DRB、信令无线承载SRB。
  10. 根据权利要求1所述的方法，其中，所述方法还包括：当UE处于所述预设态下，且任一数据无线承载DRB或信令无线承载SRB的分组数据汇聚协议PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，所述UE发起密钥更新过程。
  11. 根据权利要求10所述的方法，其中，所述触发UE申请密钥更新的COUNT值为预设的，或者，是由基站通过系统信息广播的，或者，是由基站通过无线资源控制RRC信令配置的。
  12. 根据权利要求10所述的方法，其中，所述UE发起密钥更新过程，包括：UE发送无线资源控制RRC信令，所述RRC信令携带密钥更新请求。
  13. 根据权利要求12所述的方法，其中，所述RRC信令包括以下之一：RRC连接重建立请求消息RRCConnectionReestablishmentRequest、RRC连接恢复请求消息RRCConnectionResumeRequest、自定义的新消息。
  14. 根据权利要求1所述的方法，其中，所述方法还包括：
    UE接收携带密钥更新指示信息的寻呼消息；
    所述UE接收到所述寻呼消息后，进行以下至少之一操作：
    重置媒体接入控制MAC层；重建无线链路控制RLC层；更新密钥；将分组数据汇聚协议PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和物理层PHY应用缺省配置参数；
    在执行上述操作之后，所述UE保持在预设态下。
  15. 根据权利要求1所述的方法，其中，所述方法还包括：
    UE接收携带密钥更新指示信息的无线资源控制RRC连接重配消息；
    所述UE接收到所述RRC连接重配消息后，进行以下至少之一操作：
    重置媒体接入控制MAC层；重建无线链路控制RLC层；更新密钥；将分组数据汇聚协议PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和物理层PHY应用缺省配置参数；
    在执行上述操作之后，所述UE采用非授权的传输方式向基站发送RRC连接重配完成消息，并保持在预设态下。
  16. 根据权利要求1所述的方法，其中，所述方法还包括：
    UE接收到无线资源控制RRC连接重配消息后，执行以下至少之一操作：
    重置媒体接入控制MAC层；重建无线链路控制RLC层；重建分组数据汇聚协议PDCP层；按照RRC连接重配消息中携带的配置信息更新预设态的配置方式；
    在执行上述操作之后，UE采用非授权的传输方式向目标小区的基站发送RRC连接重配完成消息，切换到目标小区，进入连接态。
  17. 根据权利要求1所述的方法，其中，所述采用预设态的配置方式处理发送数据之后，所述方法还包括：所述UE采用非授权的传输方式，发射所述发送数据。
  18. 一种数据传输的方法，包括：
    基站向用户设备UE指示预设态的配置方式，以使所述UE在预设态采用所述配置方式处理发送数据，其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
  19. 根据权利要求18所述的方法，其中，所述方法还包括：所述基站指示UE进入预设态。
  20. 根据权利要求18所述的方法，其中，所述方法还包括：
    所述基站通过系统信息广播或者无线资源控制RRC信令发送触发UE申请密钥更新的COUNT值，以使处于预设态下的UE，在任一数据无线承载DRB或信令无线承载SRB的分组数据汇聚协议PDCP层使用的COUNT值达到所述触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
  21. 根据权利要求20所述的方法，其中，所述方法还包括：所述基站在接收到所述UE发送的密钥更新请求之后，判断所述UE的任一DRB或SRB的PDCP层使用的COUNT值是否达到所述触发UE申请密钥更新的COUNT值，若是，则向所述UE发送回复响应消息，其中，所述回复响应消息携带密钥更新指示信息。
  22. 根据权利要求18所述的方法，其中，所述方法还包括：
    所述基站监测UE的任一数据无线承载DRB或信令无线承载SRB的分组数据汇聚协 议PDCP层使用的COUNT值；
    在监测到处于预设态下的UE的任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，所述基站通过寻呼消息通知所述UE更新密钥，其中，所述寻呼消息携带密钥更新指示信息；或者，所述基站通过无线资源控制RRC连接重配消息通知所述UE更新密钥，其中，所述RRC连接重配消息携带密钥更新指示信息。
  23. 一种数据传输的装置，应用于用户设备UE，包括：
    第一处理模块，设置为当UE处于预设态时，采用预设态的配置方式处理发送数据；其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
  24. 根据权利要求23所述的装置，其中，所述第一处理模块，设置为通过以下至少之一方式采用预设态的配置方式处理发送数据：
    在用户面按照保存的连接态下的无线承载的配置方式处理所述发送数据；
    在用户面按照预定的无线承载的配置方式处理所述发送数据；
    在用户面按照目标基站的无线承载的配置方式处理所述发送数据。
  25. 根据权利要求23所述的装置，其中，所述装置还包括：
    第二处理模块，设置为当UE处于所述预设态下，且任一数据无线承载DRB或信令无线承载SRB的分组数据汇聚协议PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
  26. 根据权利要求23所述的装置，其中，所述装置还包括：
    接收模块，设置为接收携带密钥更新指示信息的寻呼消息，或者，接收携带密钥更新指示信息的无线资源控制RRC连接重配消息；
    第三处理模块，设置为在所述接收模块接收到所述寻呼消息后，进行以下至少之一操作：重置媒体接入控制MAC层；重建无线链路控制RLC层；更新密钥；将分组数据汇聚协议PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和物理层PHY应用缺省配置参数；以及在执行上述操作之后，保持在预设态下；
    或者，设置为在所述接收模块接收到所述RRC连接重配消息后，进行以下至少之一操作：重置MAC层；重建RLC层；更新密钥；将PDCP层使用的COUNT值设置为1；按照预设态下保存的配置方式，配置PDCP层和RLC层；在MAC层和PHY应用缺省配 置参数；以及在执行上述操作之后，采用非授权的传输方式向基站发送RRC连接重配完成消息，并保持在预设态下。
  27. 根据权利要求23所述的装置，其中，所述装置还包括：发射模块，设置为采用非授权的传输方式，发射所述发送数据。
  28. 一种数据传输的装置，应用于基站，包括：
    第一指示模块，设置为向用户设备UE指示预设态的配置方式，以使所述UE在预设态采用所述配置方式处理发送数据，其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
  29. 根据权利要求28所述的装置，其中，所述装置还包括：第二指示模块，设置为指示UE进入预设态。
  30. 根据权利要求28所述的装置，其中，所述装置还包括：第一传输模块，设置为通过系统信息广播或者无线资源控制RRC信令发送触发UE申请密钥更新的COUNT值，以使处于预设态下的UE，在任一数据无线承载DRB或信令无线承载SRB的分组数据汇聚协议PDCP层使用的COUNT值达到所述触发UE申请密钥更新的COUNT值时，发起密钥更新过程。
  31. 根据权利要求30所述的装置，其中，所述装置还包括：
    请求接收模块，设置为接收所述UE发送的密钥更新请求；
    判断模块，设置为在所述请求接收模块接收到所述UE发送的密钥更新请求之后，判断所述UE的任一DRB或SRB的PDCP层使用的COUNT值是否达到触发UE申请密钥更新的COUNT值；
    第二传输模块，设置为在所述判断模块的结果为是时，向所述UE发送回复响应消息，其中，所述回复响应消息携带密钥更新指示信息。
  32. 根据权利要求28所述的装置，其中，所述装置还包括：
    监测模块，设置为监测UE的任一数据无线承载DRB或信令无线承载SRB的分组数据汇聚协议PDCP层使用的COUNT值；
    通知模块，设置为在所述监测模块监测到处于预设态下的UE的任一DRB或SRB的PDCP层使用的COUNT值达到触发UE申请密钥更新的COUNT值时，通过寻呼消息通知所述UE更新密钥，其中，所述寻呼消息携带密钥更新指示信息；或者，通过无线资源控制RRC连接重配消息通知所述UE更新密钥，其中，所述RRC连接重配消息携带密钥更新指示信息。
  33. 一种数据传输的系统，包括：用户设备UE以及基站；
    所述基站设置为向UE指示预设态的配置方式；所述UE设置为在预设态采用所述配置方式处理发送数据；其中，所述预设态指UE与基站之间的接口断开且所述基站与核心网之间的接口保持连接的状态。
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