WO2018228137A1 - 一种数据中转方法、装置、网络功能实体及smf实体 - Google Patents

一种数据中转方法、装置、网络功能实体及smf实体 Download PDF

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Publication number
WO2018228137A1
WO2018228137A1 PCT/CN2018/087636 CN2018087636W WO2018228137A1 WO 2018228137 A1 WO2018228137 A1 WO 2018228137A1 CN 2018087636 W CN2018087636 W CN 2018087636W WO 2018228137 A1 WO2018228137 A1 WO 2018228137A1
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Prior art keywords
data
pdu session
forwarding
eps bearer
entity
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PCT/CN2018/087636
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English (en)
French (fr)
Inventor
王胡成
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电信科学技术研究院有限公司
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Priority claimed from CN201710458659.5A external-priority patent/CN109246767B/zh
Application filed by 电信科学技术研究院有限公司 filed Critical 电信科学技术研究院有限公司
Priority to EP21191270.4A priority Critical patent/EP3934324B1/en
Priority to KR1020207001216A priority patent/KR102287142B1/ko
Priority to US16/618,322 priority patent/US10973063B2/en
Priority to JP2019569441A priority patent/JP6945658B2/ja
Priority to EP18818163.0A priority patent/EP3641395B1/en
Publication of WO2018228137A1 publication Critical patent/WO2018228137A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

Definitions

  • the embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a data transfer method, apparatus, network function entity, and SMF entity.
  • the 5G network needs to support interoperability with the Long Term Evolution (LTE) network of the universal mobile communication technology, one of which is a single registration mode.
  • LTE Long Term Evolution
  • the interoperability mode enables the user equipment (UE, User Equipment) to perform inter-inter-RAT handover between the 5G network and the LTE network.
  • UE User Equipment
  • the core network functional entity supporting data forwarding can be correctly received from one system.
  • the data is mapped to the transmission path of another system.
  • the PWF-U+UPF entity supporting both the public data network gateway user plane function PGW-U and the user plane function UPF is used to complete data forwarding.
  • this method of routing forwarding data to the PGW-U+UPF entity causes redundant data routing and increases the delay of data forwarding.
  • the PGW-U+UPF entity is used as the data transit node, which requires that the data sent by the anchor point of the session is first rerouted back to the anchor point and then forwarded to the target base station. Therefore, the traditional data transfer method in the interoperability scenario causes redundancy of forwarding data transmission, large delay of data forwarding, and low efficiency of forwarding data transmission, especially in a roaming scenario using home routing.
  • the purpose of the embodiments of the present disclosure is to provide a data transfer method, a device, a network function entity, and an SMF entity, so as to solve the traditional data transfer method in the interoperability scenario, resulting in data transmission redundancy and data forwarding delay. Big technical problems.
  • an embodiment of the present disclosure provides a data transfer method, which is applied to a network function entity, and includes:
  • the mapping relationship between the EPS bearer information and the PDU session information is sent to the SMF entity, and the SMF entity configures a data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the data relay method may further include: determining an SMF entity for data forwarding.
  • the network functional entity is an AMF entity, or a PGW-C+SMF entity.
  • the mapping relationship between the acquired EPS bearer information and the PDU session information includes:
  • the network function entity is an AMF entity
  • the method further includes: before the obtaining a mapping relationship between the ID of the EPS bearer that forwards the data and the ID of the QoS flow of the PDU session, the method further includes:
  • the ID of the EPS bearer that needs to receive the forwarded data is obtained from the MME entity.
  • the method before the acquiring, by the MME entity, the ID of the EPS bearer that needs to receive the forwarding data, the method further includes:
  • the method before the providing the MME entity with the ID of the EPS bearer that needs to receive the forwarding data, the method further includes:
  • the mapping relationship between the acquired EPS bearer information and the PDU session information includes:
  • the network function entity is an AMF entity, and the acquiring needs to receive an ID of a PDU session for forwarding data and a mapping relationship between an ID of an associated QoS flow in the PDU session and an ID of an EPS bearer.
  • the method further includes:
  • the ID of the QoS flow of the PDU session that needs to receive the forwarded data is acquired from the NG RAN of the 5G system.
  • the method before the acquiring, by the NG RAN of the 5G system, the ID of the QoS flow of the PDU session that needs to receive the forwarding data, the method further includes:
  • the method before the providing the NG RAN with the ID of the QoS flow of the PDU session that needs to receive the forwarding data, the method further includes:
  • the determining an SMF entity for data forwarding includes:
  • the PDU session related to the data forwarding is a PDU session that needs to perform data forwarding, or a PDU session corresponding to the EPS bearer that needs to perform data forwarding;
  • the PDU session information includes one or more of the following: a data network name corresponding to the PDU session and network slice information to which the PDU session belongs.
  • the network function entity is a PGW-C+SMF entity
  • the determining a session management function SMF entity for data forwarding includes:
  • an embodiment of the present disclosure provides a data transfer method, which is applied to an SMF entity, including:
  • the mapping relationship between the EPS bearer information and the PDU session information is an ID of the EPS bearer that needs to receive the forwarded data and a QoS flow of the PDU session.
  • the data mapping tunnel is configured according to the mapping relationship between the EPS bearer information and the PDU session information, and includes:
  • the UPF entity is enabled to forward the data packet to the forwarding tunnel of the correct EPS bearer according to the QoS flow ID of the data packet.
  • the mapping relationship between the EPS bearer information and the PDU session information is an ID of a PDU session that needs to receive the forwarded data, and a correlation in the PDU session.
  • a mapping relationship between the ID of the QoS flow and the ID of the EPS bearer, and configuring the data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information including:
  • the UPF entity is enabled to mark the data packet received from the tunnel of the EPS bearer with the correct QoS flow ID and forward it to the forwarding tunnel of the correct PDU session.
  • an embodiment of the present disclosure provides a data relay device, which is applied to a network function entity, and includes:
  • a first acquiring module configured to acquire a mapping relationship between the EPS bearer information and the PDU session information
  • a first sending module configured to send a mapping relationship between the EPS bearer information and the PDU session information to the SMF entity, where the SMF entity configures a data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the network functional entity is an AMF entity, or a PGW-C+SMF entity.
  • the first acquiring module when the data is forwarded from the 5G system to the LTE system, is specifically configured to:
  • the network function entity is an AMF entity
  • the device further includes:
  • a second acquiring module configured to acquire, from the MME entity, an ID of an EPS bearer that needs to receive the forwarding data.
  • the apparatus further includes:
  • a second sending module configured to provide the MME entity with an ID of an EPS bearer that needs to receive forwarding data to be selected.
  • the apparatus further includes:
  • a third acquiring module configured to acquire, from the NG RAN of the 5G system, a QoS flow ID of the PDU session that needs to perform data forwarding;
  • a fourth acquiring module configured to acquire, from the PGW-C+SMF entity, a mapping relationship between a QoS flow ID of the PDU session and an EPS bearer ID;
  • a first determining module configured to determine, according to a mapping relationship between a QoS flow ID of the PDU session and an EPS bearer ID, an EPS bearer that needs to receive forwarding data corresponding to the QoS flow ID of the PDU session that needs to perform data forwarding ID.
  • the first obtaining module when the data is forwarded from the LTE system to the 5G system, is configured to:
  • the network function entity is an AMF entity
  • the device further includes:
  • a fifth obtaining module configured to acquire, from the NG RAN of the 5G system, an ID of the QoS flow of the PDU session that needs to receive the forwarded data.
  • the apparatus further includes:
  • a third sending module configured to provide the NG RAN with an ID of a QoS flow of the PDU session to be selected to receive the forwarding data.
  • the apparatus further includes:
  • a sixth acquiring module configured to acquire, from an MME entity, an ID of an EPS bearer that needs to perform data forwarding
  • a second determining module configured to determine an ID of the QoS flow of the PDU session that needs to receive the forwarding data according to the ID of the EPS bearer that needs to perform data forwarding.
  • the determining module is specifically configured to:
  • the PDU session related to the data forwarding is a PDU session that needs to perform data forwarding, or a PDU session corresponding to the EPS bearer that needs to perform data forwarding;
  • the PDU session information includes one or more of the following: a data network name corresponding to the PDU session and network slice information to which the PDU session belongs.
  • the network function entity is a PGW-C+SMF entity
  • the determining module is configured to:
  • an embodiment of the present disclosure provides a data forwarding apparatus, which is applied to an SMF entity, and includes:
  • a receiving module configured to receive a mapping relationship between the EPS bearer information sent by the AMF entity or the PGW-C+SMF entity and the PDU session information;
  • a configuration module configured to configure a data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the mapping relationship between the EPS bearer information and the PDU session information is an ID of the EPS bearer that needs to receive the forwarded data and a QoS flow of the PDU session.
  • the mapping relationship of the ID the configuration module includes:
  • a first selection unit configured to select a UPF entity
  • a first configuration unit configured to allocate a core network tunnel identifier for data forwarding for the PDU session, and configure a forwarding tunnel between the UPF entity and the SGW for data forwarding and a PDU between the NG RAN and the 5G system Session tunnel;
  • a first binding unit configured to bind, according to the mapping relationship between an ID of an EPS bearer that forwards data and an ID of a QoS flow of a PDU session, to bind the QoS flow of the PDU session to the data that needs to receive forwarding data.
  • the EPS carries the corresponding forwarding tunnel, so that the UPF entity can forward the data packet to the forwarding tunnel of the correct EPS bearer according to the QoS flow ID of the data packet.
  • the mapping relationship between the EPS bearer information and the PDU session information is an ID of a PDU session that needs to receive the forwarded data, and a correlation in the PDU session.
  • a second selection unit configured to select a UPF entity
  • a second configuration unit configured to allocate a tunnel endpoint identifier for data forwarding for the EPS bearer, and configure a PDU session tunnel between the UPF entity and the NG RAN of the 5G system;
  • a second binding unit configured to bind the EPS bearer to the ID according to the ID of the PDU session that needs to receive the forwarding data and the mapping between the ID of the relevant QoS flow in the PDU session and the ID of the EPS bearer.
  • the forwarding tunnel corresponding to the PDU session that needs to receive the forwarding data so that the UPF entity can mark the data packet received from the tunnel of the EPS bearer with the correct QoS flow ID and forward it to the forwarding tunnel of the correct PDU session. on.
  • an embodiment of the present disclosure provides a network function entity, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor performs the The steps in the data transfer method as described in the first aspect are implemented at the time of the program.
  • an embodiment of the present disclosure provides an SMF entity, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the program
  • SMF entity including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the program
  • an embodiment of the present disclosure provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor to implement the steps in the data relay method as described in the first aspect.
  • an embodiment of the present disclosure provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor to implement the steps in the data relay method as described in the second aspect.
  • the SMF entity for data forwarding is determined by acquiring the mapping relationship between the EPS bearer information and the PDU session information, and the mapping relationship between the EPS bearer information and the PDU session information is sent to the SMF entity.
  • the data forwarding tunnel is configured by the SMF entity according to the mapping relationship between the EPS bearer information and the PDU session information, so that the PGW-U+UPF entity can be avoided as the data forwarding node, thereby avoiding redundancy of forwarding data transmission, reducing delay of data forwarding, and improving Forward the efficiency of data transmission.
  • FIG. 1 is a flow chart showing a data transfer method of an embodiment of the present disclosure
  • FIG. 2 is a flow chart showing a data transfer process of a specific example 1 of the present disclosure
  • FIG. 3 is a flow chart showing a data transfer process of a specific example 2 of the present disclosure
  • Example 4 is a flow chart showing a data transfer process of Concrete Example 3 of the present disclosure.
  • Figure 5 is a flow chart showing the data transfer process of Concrete Example 4 of the present disclosure.
  • Example 6 is a flow chart showing a data transfer process of Concrete Example 5 of the present disclosure.
  • FIG. 7 is a flowchart showing another data transfer method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a data relay device according to an embodiment of the present disclosure.
  • FIG. 9 is a second schematic structural diagram of a data relay device according to an embodiment of the present disclosure.
  • FIG. 10 is a third schematic structural diagram of a data relay device according to an embodiment of the present disclosure.
  • FIG. 11 is a fourth structural diagram of a data relay device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a network function entity according to an embodiment of the present disclosure.
  • the mobility management function (MME, Mobility Management Entity) entity in the LTE network and the Access and Mobility Management Function (AMF) entity in the 5G network The Nx interface between the two is optionally supported.
  • the network can support the handover between the 5G network and the LTE network.
  • the context information of the UE needs to be transmitted between the MME entity and the AMF entity, including the mobility context and the context of the session connection.
  • the network may configure its registration mode to the single registration mode, that is, the single registration mode.
  • the current single registration mode is a working mode that is mandatory for the UE to support.
  • the switching process from the 5G network to the LTE network in the single registration mode is mainly as follows:
  • the AMF entity After receiving the handover request of the radio access network (RAN), the AMF entity requests all session management function (SMF) entities to return the evolved packet system (EPS, generated by the PDU session context mapping). Evolved Packet System) bearer context;
  • SMF session management function
  • EPS evolved packet system
  • the AMF entity After receiving the EPS bearer context returned by all SMF entities, the AMF entity generates a UE context in combination with the mobility context of the UE, and delivers the UE context to the MME entity through the Nx interface.
  • the target MME entity regards the Nx interface as an S10 interface, that is, the AMF entity is regarded as an MME entity, and after receiving the UE context from the Nx interface, the target MME entity continues the subsequent process according to the S1 handover procedure of the existing EPS system.
  • a dedicated bearer activation procedure may be initiated to establish a dedicated bearer for some non-GRB QoS flows.
  • the handover preparation process of the LTE network to the 5G network in the single registration mode is mainly as follows:
  • the MME entity After receiving the handover request of the evolved UMTS terrestrial radio access network E-UTRAN, the MME entity determines the target AMF entity and sends the EPS bearer context to the AMF entity.
  • the AMF entity After receiving the request of the MME entity, the AMF entity completes the conversion of the EPS mobility management context to the 5GS mobility management context, where the UE context provided by the MME entity includes an EPS bearer context, and the EPS bearer context includes the PGW-C+ The address of the SMF entity and the uplink tunnel information of the PGW-U+UPF entity;
  • the AMF entity sends a request message to the PGW-C+SMF entity, requesting the PGW-C+SMF entity to return information such as the PDU session identifier ID, the QoS Rules, and the EPS bearer list;
  • the AMF entity sends a handover request message to the next-generation radio access network NG RAN in the 5G network, requesting to establish an air interface bearer;
  • the NG RAN returns an ACK message to the AMF entity, where the message carries the RAN side tunnel information of the N3 interface used for data forwarding.
  • the AMF entity sends a request message to the PGW-C+SMF entity, and carries the RAN side tunnel information of the N3 interface used for data forwarding.
  • the PGW-C+SMF entity returns a PDU session ID and an EPS bearer list to the AMF entity, where the EPS bearer list includes bearer information established in the 5G system, including core network tunnel information of the bearer that needs data transfer;
  • the AMF entity returns a response message to the MME entity, where the message carries the EPS bearer list, so that the MME entity can use the core network tunnel information of the bearer that needs to be transferred by the data to request the serving gateway (SGW, Serving Gate Way) to create a forwarding tunnel.
  • SGW Serving Gate Way
  • the PGW-U+UPF entity is used as the data transit node, which requires that the data sent by the anchor point of the session is first rerouted back to the anchor point and then forwarded to the target base station. Therefore, the traditional data transfer method in the interoperability scenario causes redundancy of forwarding data transmission, large delay of data forwarding, and low efficiency of forwarding data transmission, especially in a roaming scenario using home routing.
  • an embodiment of the present disclosure provides a data transfer method, which is applied to a network function entity, and includes the following steps:
  • Step 101 Obtain a mapping relationship between EPS bearer information and PDU session information.
  • the network function entity in the embodiment of the present disclosure may be a core access and mobility management function AMF entity, or may be a PGW-C+SMF entity supporting the public data network gateway control plane function PGW-C and the anchor SMF. .
  • the data transfer method of the embodiment of the present disclosure can be applied to an interoperability scenario of a 5G network and an LTE network, and data can be forwarded from the 5G system to the LTE system, or can be forwarded from the LTE system to the 5G system.
  • the mapping relationship between the acquired EPS bearer information and the PDU session information may be specifically: obtaining a mapping relationship between an ID of the EPS bearer that needs to receive the forwarded data and an ID of the QoS flow of the PDU session.
  • the mapping relationship between the acquired EPS bearer information and the PDU session information may be: mapping the ID of the EPS bearer and the ID of the QoS flow of the PDU session that needs to perform data forwarding. relationship.
  • the mapping relationship between the acquired EPS bearer information and the PDU session information may be specifically: obtaining the ID of the PDU session that needs to receive the forwarded data, and the ID and EPS of the relevant QoS flow in the PDU session.
  • the mapping relationship of the bearer ID when the data is forwarded from the LTE system to the 5G system, the mapping relationship between the acquired EPS bearer information and the PDU session information may be: obtaining the ID of the EPS bearer that needs to be forwarded by the data, and the ID of the PDU session and the PDU session.
  • Step 102 Determine an SMF entity for data forwarding.
  • the SMF entity determined in this step may specifically be an intermediate SMF entity.
  • the network function entity when determining the SMF entity for data forwarding, may make a determination based on location information of the UE, and/or PDU session information related to data forwarding.
  • step 102 may be:
  • the SMF entity for data forwarding is determined based on location information of the UE, and/or PDU session information related to data forwarding.
  • the PDU session related to the data forwarding is a PDU session that needs to perform data forwarding, or a PDU session corresponding to the EPS bearer that needs to perform data forwarding.
  • the PDU session information may include one or more of the following: a data network name (DNN, Data Network Name) corresponding to the PDU session and network slice information to which the PDU session belongs.
  • DNN Data Network Name
  • the process of determining the SMF entity used for data forwarding by the PGW-C+SMF entity may be:
  • An SMF entity for data forwarding is determined based on the received request message.
  • the determined SMF entity for data forwarding may be a PGW-C+SMF entity, and at this time, the PGW-C+SMF entity is sent to the PGW-C+SMF entity.
  • the step of mapping the EPS bearer information to the PDU session information may be omitted.
  • the determined SMF entity for forwarding may be a V-SMF (visitor SMF) entity serving the PDU session in the related art.
  • Step 103 The mapping relationship between the EPS bearer information and the PDU session information is sent to the SMF entity, and the SMF entity configures the data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the process of configuring the data forwarding tunnel by the SMF entity may be specifically: first, when the mapping relationship between the EPS bearer information and the PDU session information is the mapping relationship between the ID of the EPS bearer that needs to receive the forwarded data and the ID of the QoS flow of the PDU session.
  • the process of configuring the data forwarding tunnel by the SMF entity may be Specifically: first, selecting a UPF entity; then, assigning a tunnel endpoint identifier for data forwarding to the EPS bearer, and configuring a PDU session tunnel between the UPF entity and the NG RAN of the 5G system; and finally, receiving the forwarding data according to the requirement
  • the ID of the PDU session and the mapping relationship between the ID of the QoS flow and the ID of the EPS bearer in the PDU session, and the EPS bearer is bound to the forwarding tunnel corresponding to the PDU session that needs to receive the forwarding data, so that the UPF entity can carry the EPS from the EPS.
  • the packet received by the tunnel is tagged with the correct QoS flow ID and forwarded to the
  • the data transfer method of the embodiment of the present disclosure determines the mapping relationship between the EPS bearer information and the PDU session information, determines the SMF entity used for data forwarding, and sends the mapping relationship between the EPS bearer information and the PDU session information to the SMF entity, and the SMF entity
  • the data forwarding tunnel is configured according to the mapping relationship between the EPS bearer information and the PDU session information, so that the PGW-U+UPF entity can be avoided as the data forwarding node, thereby avoiding redundancy of forwarding data transmission, reducing delay of data forwarding, and improving forwarding data transmission. s efficiency.
  • the AMF entity obtains the EPS that needs to receive the forwarded data.
  • the mapping relationship between the ID of the bearer and the ID of the QoS flow of the PDU session may be obtained from the MME entity before receiving the mapping relationship between the ID of the EPS bearer that needs to receive the forwarded data and the ID of the QoS flow of the PDU session. ID carried by EPS.
  • the AMF entity may further provide the MME entity with an ID of the EPS bearer that needs to receive the forwarding data before the MME entity obtains the ID of the EPS bearer that needs to receive the forwarding data, so that the LTE network receives the LTE network according to the candidate to be selected.
  • the ID of the EPS bearer that forwards the data determines the ID of the EPS bearer that needs to receive the forwarded data.
  • the eNB in the LTE network encapsulates the QoS flow of the PDU session and the EPS generated by the mapping according to the NG RAN encapsulated in the source-to-target transparent container in the source 5G network.
  • the mapping relationship determines the ID of the final EPS bearer that needs to receive the forwarded data.
  • the AMF entity needs to determine the ID of the EPS bearer that needs to receive the forwarding data.
  • the process by which the AMF entity determines the ID of the EPS bearer that needs to receive the forwarded data may be:
  • the AMF entity In order to obtain the ID of the PDU session that needs to receive the forwarding data and the mapping relationship between the ID of the relevant QoS flow in the PDU session and the ID of the EPS bearer, obtain the ID of the PDU session that needs to receive the forwarded data and the related QoS in the PDU session.
  • the ID of the QoS stream of the PDU session that needs to receive the forwarded data may also be acquired from the NG RAN of the 5G system.
  • the AMF entity may further provide the NG RAN with the ID of the QoS flow of the PDU session that needs to receive the forwarding data before acquiring the ID of the QoS flow of the PDU session that needs to receive the forwarding data from the NG RAN of the 5G system.
  • the NG RAN is configured to determine the ID of the QoS flow of the final PDU session that needs to receive the forwarded data according to the ID of the QoS flow of the PDU session that needs to receive the forwarded data according to the candidate to be selected.
  • the mapping relationship between the EPS bearer and the mapping generated by the NG RAN according to the eNB in the MPLS network encapsulates the source-to-target transparent container, and determines the final need to receive and forward the data. ID of the QoS flow of the PDU session.
  • the ID of the QoS flow of the PDU session that needs to receive the forwarding data needs to be determined.
  • the process by which the AMF entity determines the ID of the QoS flow of the PDU session that needs to receive the forwarded data may be:
  • the ID of the QoS flow of the PDU session that needs to receive the forwarded data is determined according to the ID of the EPS bearer that needs to perform data forwarding.
  • FIG. 2 a flow chart of a data transfer process of a specific example 1 of the present disclosure is shown.
  • the data is forwarded by the 5G system to the LTE system, and the AMF entity requests to create a forwarding tunnel.
  • the data transfer process of example one includes the following steps:
  • Step 201 The NG RAN of the 5G system sends a handover request message to the AMF entity.
  • the Handover Request message carries QoS flow information of the PDU session that needs to be forwarded by data (or referred to as data transfer).
  • Step 202 The AMF entity determines a corresponding PGW-C+SMF entity according to the PDU session ID, and sends a session management request (SM Request) message to the PGW-C+SMF entity.
  • the session management request message carries data forwarding. ID of the QoS flow of the PDU session;
  • Step 203 The PGW-C+SMF entity determines the mapping relationship between the QoS flow ID of the PDU session and the EPS bearer ID according to the mapping parameters of the EPS bearer and the QoS flow, determines the EPS bearer context corresponding to the QoS flow, and returns the session management to the AMF entity.
  • a response (SM Response) message wherein the session management response message carries the determined EPS bearer context;
  • Step 204 The AMF entity forwards the mapped EPS bearer context provided by the PGW-C+SMF entity to the MME entity by using a forward relocation request message, where the EPS bearer context includes an EPS bearer that needs to receive the forwarded data.
  • Information
  • Step 205 The MME entity sends a handover request message to the target eNB in the E-UTRAN according to the received EPS bearer information, where the handover request message carries corresponding EPS bearer information, such as an EPS bearer ID.
  • EPS bearer information such as an EPS bearer ID.
  • Step 206 The target eNB allocates a forwarding tunnel endpoint identifier TEID to the corresponding bearer according to the EPS bearer information, and returns a TEID to the MME entity in the Handover Request ACK message.
  • Step 207 The MME entity uses an existing process to create an indirect data forwarding tunnel with the SGW, and allocates a TEID.
  • Step 208 The MME entity sends a forward relocation response (Forward Relocation Response) message to the AMF entity to return the TEID allocated by the SGW for data forwarding and its associated EPS bearer ID to the AMF entity.
  • a forward relocation response Forward Relocation Response
  • Step 209 The AMF entity determines an SMF (IWK SMF) entity for data forwarding for each PDU session based on the location information of the UE.
  • SMF IWK SMF
  • Step 210 The AMF entity sends a Create Indirect DF Tunnel Request message to the determined SMF entity.
  • the Create Forwarding Tunnel Request message carries the ID of the EPS bearer that needs to receive the forwarded data and the ID of the QoS flow of the PDU session.
  • the mapping relationship, and the EPS bearer context such as the EPS bearer ID, the SGW TEID corresponding to the EPS bearer, and the quality of service flow identifier QFI (QoS Flow ID);
  • Step 211 The SMF entity selects the UPF entity, allocates the core network tunnel identifier of the N3 interface for data forwarding for the PDU session, establishes an N3 PDU session tunnel with the NG RAN, and configures the UPF according to the SGW TEID corresponding to the EPS bearer.
  • the forwarding tunnel between the SGWs of the data forwarding, and the QoS flow is bound to the forwarding tunnel corresponding to the EPS bearer according to the mapping relationship between the EPS bearer ID and the QoS flow ID of the PDU session, so that the UPF can be based on the QFI of the data packet. Map the packet to the correct forwarding tunnel;
  • Step 212 The SMF entity sends a Create Indirect DF Tunnel Response message to the AMF entity, where the forwarding tunnel response message carries the core network tunnel identifier of the N3 interface used for data forwarding.
  • Step 213 The AMF entity sends a handover command (Handover Command, which can carry the core network tunnel identifier of the N3 interface for data forwarding) to the NG RAN, so that the data buffered on the NG RAN can be forwarded to the UPF, and the UPF is based on the QFI of the packet header. Mapping the data packet to the correct forwarding tunnel, and the UPF strips the QFI of the packet header and forwards the data to the SGW, that is, the AMF entity completes the subsequent handover process;
  • Handover Command which can carry the core network tunnel identifier of the N3 interface for data forwarding
  • Step 214 The NG RAN sends a handover command to the UE.
  • FIG. 3 a flow chart of the data transfer process of the specific example 2 of the present disclosure is shown.
  • the data is forwarded by the 5G system to the LTE system, and the PGW-C+SMF entity requests to create a forwarding tunnel.
  • the data transfer process of example two includes the following steps:
  • Step 301 The NG RAN sends a handover request message to the AMF entity, where the handover request message carries QoS flow information of the PDU session that needs to perform data forwarding, where the QoS flow information includes the ID of the QoS flow, and the ID of the PDU session to which it belongs.
  • Step 302 The AMF entity determines a corresponding PGW-C+SMF entity according to the PDU session ID, and sends a session management request message to the PGW-C+SMF entity.
  • the session management request message carries the PDU session that needs to perform data forwarding. ID of the QoS flow;
  • Step 303 The PGW-C+SMF entity determines the mapping relationship between the QoS flow ID of the PDU session and the EPS bearer ID according to the mapping parameters of the EPS bearer and the QoS flow, determines the EPS bearer context corresponding to the QoS flow, and returns the session management to the AMF entity. a response message; wherein the session management response message carries the determined EPS bearer context;
  • Step 304 The AMF forwards the mapped EPS bearer context provided by the PGW-C+SMF entity to the MME entity by using the Forward Relocation Request message, where the EPS bearer context includes information of the EPS bearer that needs to receive the forwarded data.
  • Step 305 The MME entity sends a handover request message to the target base station eNB in the E-UTRAN according to the received EPS bearer information.
  • the handover request message carries corresponding EPS bearer information, such as an EPS bearer ID.
  • Step 306 The target eNB allocates a forwarding tunnel endpoint identifier TEID to the corresponding bearer according to the EPS bearer information, and returns a TEID to the MME entity in the handover response message.
  • Step 307 The MME entity creates an indirect data forwarding tunnel by using an existing process and service gateway SGW, and allocates a TEID.
  • Step 308 The MME entity sends a forward relocation response message to the AMF entity to return the TEID allocated by the SGW for data forwarding to the AMF entity, and its associated EPS bearer ID.
  • Step 309 The AMF entity sends a Create Forwarding Tunnel Request message to the PGW-C+SMF entity according to the mapping relationship between the received EPS bearer ID and the QoS flow of the PDU session.
  • the Create Forwarding Tunnel Request message carries the EPS bearer ID and EPS. Carry the corresponding SGW TEID;
  • Step 310 The PGW-C+SMF entity determines an intermediate SMF entity for data forwarding for each PDU session based on location information of the UE.
  • Step 311 The PGW-C+SMF entity sends a Create Forwarding Tunnel Request message to the determined intermediate SMF entity.
  • the mapping of the ID of the EPS bearer carrying the forwarding data and the ID of the QoS flow of the PDU session is created in the Create Forwarding Tunnel Request message. Relationship, and the SGW TEID corresponding to the EPS bearer;
  • Step 312 The intermediate SMF entity selects the UPF entity, allocates the core network tunnel identifier of the N3 interface for data forwarding, establishes an N3 PDU session tunnel with the NG RAN, and configures the UPF according to the SGW TEID corresponding to the EPS bearer.
  • Stream ID mapping the packet to the correct forwarding tunnel;
  • Step 313 The intermediate SMF entity sends a create forwarding tunnel response message to the PGW-C+SMF entity, where the forwarding tunnel response message carries the core network tunnel identifier of the N3 interface used for data forwarding.
  • Step 314 The PGW-C+SMF entity sends a forwarding tunnel response message to the AMF entity, where the forwarding tunnel response message carries the core network tunnel identifier of the N3 interface used for data forwarding.
  • Step 315 The AMF entity sends a handover instruction (carrying the core network tunnel identifier of the N3 interface for data forwarding) to the NG RAN, so that the data buffered on the NG RAN can be forwarded to the UPF, and the UPF sends the data packet according to the QFI of the data packet header. Mapping to the correct forwarding tunnel, the UPF strips the QFI of the packet header, and forwards the data to the SGW, that is, the AMF entity completes the subsequent handover process;
  • Step 316 The NG RAN sends a handover command to the UE.
  • the data is forwarded by the 5G system to the LTE system, but in addition to the data forwarding mode, the data can also be forwarded by the LTE system to the 5G system, for example, the third to the fifth.
  • Example 3 a flowchart of a data transfer process of Concrete Example 3 of the present disclosure is shown.
  • the data is forwarded by the LTE system to the 5G system, and the mapping between the EPS bearer and the PDU session is completed by the AMF entity, and a forwarding tunnel is requested.
  • the data transfer process of example three includes the following steps:
  • Step 401 The eNB in the E-UTRAN sends a handover request message to the MME entity, where the handover request message carries the ID of the EPS bearer that needs to perform data forwarding.
  • Step 402 The MME entity forwards the EPS bearer context to the AMF entity by using the forward relocation request message, where the EPS bearer information that needs to be forwarded by the data is carried.
  • Step 403 The AMF entity maps the default bearer ID to the PDU session ID according to the received EPS bearer, and all the dedicated bearer IDs are mapped to the QoS flow ID, and determines the QoS flow included in each PDU session.
  • Step 404 The AMF entity determines, according to the EPS bearer ID for performing data forwarding and the mapping relationship in step 403, the PDU session information that needs to receive the forwarding data, and forwards the message to the target NG RAN through the handover request message.
  • Step 405 The target NG RAN allocates an access network tunnel of the N3 interface for data forwarding to the corresponding PDU session according to the received PDU session information, and returns the AMF entity to the AMF entity in the handover response message.
  • Step 406 The AMF entity determines, according to the information returned by the NG RAN, an SMF entity for data relay for each PDU session that needs to receive the forwarding data, where the AMF entity determines the SMF entity based on the location information of the UE.
  • Step 407 The AMF entity sends a Create Forwarding Tunnel Request message to the SMF entity.
  • the mapping between the EPS bearer ID and the QoS flow ID of the PDU session, the EPS bearer ID, the QFI, and the PDU session are used in the Create Forwarding Tunnel Request message.
  • Step 408 The SMF entity selects the UPF entity, allocates a GTP tunnel endpoint identifier TEID for data forwarding for each EPS bearer, establishes an N3 PDU session tunnel with the NG RAN, and binds the EPS bearer to the forwarding tunnel corresponding to the PDU session. And establishing a mapping relationship between the PDU session ID and the EPS bearer ID, so that the UPF can apply the correct QoS flow ID to the data packet received from the GTP tunnel corresponding to the EPS bearer, and map the data packet to the forwarding of the correct PDU session.
  • the tunnel On the tunnel;
  • Step 409 The SMF entity sends a forwarding tunnel response message to the AMF entity, where the forwarding tunnel response message carries the GTP tunnel endpoint identifier TEID for data forwarding.
  • Step 410 The AMF entity sends a forward relocation response message to the MME entity, where the forward relocation response message carries the GTP tunnel endpoint identifier TEID.
  • Step 411 The MME entity creates a forwarding tunnel between the existing process and the SGW, that is, sends a request to create a forwarding tunnel request message to the SGW, and creates a forwarding tunnel request message carrying the GTP tunnel endpoint identifier TEID, and receives the SGW to send a forwarding tunnel response message. ;
  • Step 412 The MME entity sends a handover command to the NG RAN, which may carry the SGW TEID for data forwarding, that is, the MME entity completes the subsequent handover procedure.
  • Step 413 The NG RAN sends a handover command to the UE.
  • Example 4 a flowchart of a data transfer process of Concrete Example 4 of the present disclosure is shown.
  • the data is forwarded by the LTE system to the 5G system, and the AMF entity requests to create a forwarding tunnel.
  • the data transfer process of example four includes the following steps:
  • Step 501 The eNB in the E-UTRAN sends a handover request message to the MME entity, where the handover request message carries the ID of the EPS bearer that needs to perform data forwarding.
  • Step 502 The MME entity forwards the EPS bearer ID to the AMF entity by using a forward relocation request message.
  • Step 503 The AMF entity determines, according to the received EPS bearer ID, the PGW-C+SMF entity that serves the EPS bearer, and sends a session management request message to the PGW-C+SMF entity.
  • the session management request message carries the EPS bearer ID.
  • Step 504 The PGW-C+SMF entity determines the QoS flow ID of the EPS bearer mapping and the PDU session ID to which the QoS flow belongs according to the mapping parameters of the EPS bearer and the QoS flow, and returns to the AMF entity by using the session management response message.
  • Step 505 The AMF entity sends a handover request message to the target NG RAN according to the PDU session information returned by the SMF entity, where the PDU session ID is carried.
  • Step 506 The target NG RAN allocates an access network tunnel for the N3 interface for data forwarding to the corresponding PDU session according to the received PDU session information, and returns it to the AMF entity in the handover response message.
  • Step 507 The AMF entity determines, according to the information returned by the NG RAN, an SMF entity for data relay for each PDU session, where the AMF entity determines the SMF entity based on the location information of the UE.
  • Step 508 The AMF entity sends a Create Forwarding Tunnel Request message to the SMF entity.
  • the mapping between the EPS bearer ID and the QoS flow ID of the PDU session, the EPS bearer ID, the QFI, and the PDU session are used in the Create Forwarding Tunnel Request message.
  • Step 509 The SMF entity selects a UPF entity, allocates a GTP tunnel endpoint identifier TEID for data forwarding for each EPS bearer, establishes an N3 PDU session tunnel with the NG RAN, and binds the EPS bearer to the forwarding tunnel corresponding to the PDU session. And establishing a mapping relationship between the PDU session ID and the EPS bearer ID, so that the UPF can apply the correct QoS flow ID to the data packet received from the GTP tunnel corresponding to the EPS bearer, and map the data packet to the correct PDU session. Forwarding on the tunnel;
  • Step 510 The SMF entity sends a forwarding tunnel response message to the AMF entity, where the forwarding tunnel response message carries the GTP tunnel endpoint identifier TEID for data forwarding.
  • Step 511 The AMF entity sends a forward relocation response message to the MME entity, where the forward relocation response message carries the GTP tunnel endpoint identifier TEID.
  • Step 512 The MME entity creates a forwarding tunnel between the existing process and the SGW, that is, sends a forwarding tunnel request message to the SGW, and the forwarding tunnel request message carries the GTP tunnel endpoint identifier TEID, and receives the SGW to send a forwarding tunnel response message. ;
  • Step 513 The MME entity sends a handover command to the NG RAN, and may carry the SGW TEID for data forwarding, that is, the MME entity completes the subsequent handover procedure.
  • Step 514 The NG RAN sends a handover command to the UE.
  • FIG. 6 a flowchart of a data transfer process of a specific example 5 of the present disclosure is shown.
  • the data is forwarded by the LTE system to the 5G system, and the PGW-C+SMF entity requests to create a forwarding tunnel.
  • the data transfer process of example five includes the following steps:
  • Step 601 The eNB in the E-UTRAN sends a handover request message to the MME entity, where the handover request message carries the ID of the EPS bearer that needs to perform data forwarding.
  • Step 602 The MME entity forwards the EPS bearer ID to the AMF entity by using a forward relocation request message.
  • Step 603 The AMF entity determines, according to the received EPS bearer ID, the PGW-C+SMF entity that serves the EPS bearer, and sends a session management request message to the PGW-C+SMF entity.
  • the session management request message carries the EPS bearer ID.
  • Step 604 The PGW-C+SMF entity determines the QoS flow ID of the EPS bearer mapping and the PDU session ID to which the QoS flow belongs according to the mapping parameters of the EPS bearer and the QoS flow, and returns to the AMF entity by using the session management response message.
  • Step 605 The AMF entity sends a handover request message to the target NG RAN according to the PDU session information returned by the SMF entity, where the PDU session ID is carried.
  • Step 606 The target NG RAN allocates an access network tunnel for the N3 interface for data forwarding for each PDU session that needs to receive the forwarding data according to the received PDU session information, and returns it to the AMF entity in the handover response message.
  • Step 607 The AMF entity sends a Create Forwarding Tunnel Request message to the PGW-C+SMF entity according to the information returned by the NG RAN, requesting the PGW-C+SMF entity to determine the SMF entity used for data forwarding; wherein, the forwarding tunnel request message is created. And carrying the EPS bearer ID, and the access network tunnel information for data forwarding corresponding to the PDU session corresponding to the EPS bearer;
  • Step 608 The PGW-C+SMF entity determines an SMF entity used for data relaying based on location information of the UE.
  • Step 609 The PGW-C+SMF entity sends a Create Forwarding Tunnel Request message to the SMF entity to the SMF entity.
  • the mapping relationship between the EPS bearer ID and the QoS flow ID of the PDU session, the EPS bearer ID, and the QFI are created. And access network tunnel information of the N3 interface corresponding to the PDU session for data forwarding;
  • Step 610 The SMF entity selects the UPF entity, allocates a GTP tunnel endpoint identifier TEID for data forwarding for each EPS bearer, establishes an N3 PDU session tunnel with the NG RAN, and binds the EPS bearer to the forwarding tunnel corresponding to the PDU session. And establishing a mapping relationship between the PDU session ID and the EPS bearer ID, so that the UPF can apply the correct QoS flow ID to the data packet received from the GTP tunnel corresponding to the EPS bearer, and map the data packet to the correct PDU session. Forwarding on the tunnel;
  • Step 611 The SMF entity sends a Create Forwarding Tunnel Response message to the PGW-C+SMF entity.
  • the Create Forwarding Tunnel Response message carries the allocated GTP tunnel endpoint identifier TEID for data forwarding.
  • Step 612 The PGW-C+SMF entity sends a forwarding tunnel response message to the AMF entity, and carries the GTP tunnel endpoint identifier TEID for data forwarding.
  • Step 613 The AMF entity sends a forward relocation response message to the MME entity, where the forward relocation response message carries the GTP tunnel endpoint identifier TEID.
  • Step 614 The MME entity creates a forwarding tunnel between the existing process and the SGW, that is, sends a forwarding tunnel request message to the SGW, and the forwarding tunnel request message carries the GTP tunnel endpoint identifier TEID, and receives the SGW to send a forwarding tunnel response message. ;
  • Step 615 The MME entity sends a handover command to the NG RAN, and may carry the SGW TEID for data forwarding, that is, the MME entity completes the subsequent handover procedure.
  • Step 616 The NG RAN sends a handover command to the UE.
  • an embodiment of the present disclosure further provides a data transfer method, which is applied to an SMF entity, and includes the following steps:
  • Step 701 Receive a mapping relationship between the EPS bearer information sent by the AMF entity or the PGW-C+SMF entity and the PDU session information.
  • the embodiments of the present disclosure are applicable to an interoperability scenario of a 5G network and an LTE network, and data may be forwarded from the 5G system to the LTE system, or may be forwarded from the LTE system to the 5G system.
  • the mapping relationship between the EPS bearer information and the PDU session information may be: a mapping relationship between the ID of the EPS bearer that needs to receive the forwarded data and the ID of the QoS flow of the PDU session.
  • the mapping relationship between the EPS bearer information and the PDU session information may be: an ID of the PDU session that needs to receive the forwarded data, an ID of the relevant QoS flow in the PDU session, and an ID of the EPS bearer. Mapping relationship.
  • Step 702 Configure a data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the process of configuring the data forwarding tunnel in step 702 may be:
  • the QoS flow of the PDU session is bound to the forwarding tunnel corresponding to the EPS bearer that needs to receive the forwarding data, so that the UPF entity can be based on the data, according to the mapping relationship between the ID of the EPS bearer that receives the forwarding data and the ID of the QoS flow of the PDU session.
  • the QoS flow ID of the packet forwards the packet to the forwarding tunnel of the correct EPS bearer.
  • the process of configuring the data forwarding tunnel in step 702 Can be:
  • the data packet received from the tunnel of the EPS bearer can be tagged with the correct QoS flow ID and forwarded to the forwarding tunnel of the correct PDU session.
  • the data transfer method of the embodiment of the present disclosure can avoid the redundancy of forwarding data transmission, reduce the delay of data forwarding, and improve the efficiency of forwarding data transmission on the basis of accurately completing data forwarding.
  • an embodiment of the present disclosure further provides a data relay device, which is applied to a network function entity, and includes:
  • the first obtaining module 801 is configured to obtain a mapping relationship between the EPS bearer information and the PDU session information.
  • the first sending module 803 is configured to send the mapping relationship between the EPS bearer information and the PDU session information to the SMF entity, where the SMF entity configures data forwarding according to the mapping relationship between the EPS bearer information and the PDU session information. tunnel.
  • the data forwarding device of the embodiment of the present disclosure determines the mapping relationship between the EPS bearer information and the PDU session information, determines the SMF entity used for data forwarding, and sends the mapping relationship between the EPS bearer information and the PDU session information to the SMF entity, and the SMF entity
  • the data forwarding tunnel is configured according to the mapping relationship between the EPS bearer information and the PDU session information, so that the PGW-U+UPF entity can be avoided as the data forwarding node, thereby avoiding redundancy of forwarding data transmission, reducing delay of data forwarding, and improving forwarding data transmission. s efficiency.
  • the network function entity may be an AMF entity or a PGW-C+SMF entity.
  • the first obtaining module 801 when the data is forwarded from the 5G system to the LTE system, the first obtaining module 801 is specifically configured to:
  • the network function entity is an AMF entity.
  • the device further includes:
  • the second obtaining module 804 is configured to acquire, from the MME entity, an ID of an EPS bearer that needs to receive forwarding data.
  • the apparatus further includes:
  • the second sending module 805 is configured to provide the MME entity with an ID of an EPS bearer that needs to receive forwarding data to be selected.
  • the apparatus further includes:
  • a third obtaining module 806, configured to acquire, from the NG RAN of the 5G system, a QoS flow ID of a PDU session that needs to perform data forwarding;
  • the fourth obtaining module 807 is configured to acquire, from the PGW-C+SMF entity, a mapping relationship between the QoS flow ID of the PDU session and the EPS bearer ID.
  • the first determining module 808 is configured to determine, according to the mapping relationship between the QoS flow ID of the PDU session and the EPS bearer ID, the EPS that needs to receive the forwarding data corresponding to the QoS flow ID of the PDU session that needs to perform data forwarding.
  • the ID of the bearer is configured to determine, according to the mapping relationship between the QoS flow ID of the PDU session and the EPS bearer ID, the EPS that needs to receive the forwarding data corresponding to the QoS flow ID of the PDU session that needs to perform data forwarding. The ID of the bearer.
  • the first acquiring module 801 when the data is forwarded from the LTE system to the 5G system, the first acquiring module 801 is specifically configured to:
  • the network function entity is an AMF entity.
  • the device further includes:
  • the fifth obtaining module 809 is configured to acquire, from the NG RAN of the 5G system, an ID of the QoS flow of the PDU session that needs to receive the forwarded data.
  • the apparatus further includes:
  • the third sending module 810 is configured to provide the NG RAN with an ID of a QoS flow of the PDU session to be selected to receive the forwarding data.
  • the apparatus further includes:
  • the sixth obtaining module 811 is configured to acquire, from the MME entity, an ID of an EPS bearer that needs to perform data forwarding;
  • the second determining module 812 is configured to determine an ID of the QoS flow of the PDU session that needs to receive the forwarding data according to the ID of the EPS bearer that needs to perform data forwarding.
  • the determining module 802 is specifically configured to:
  • the PDU session related to the data forwarding is a PDU session that needs to perform data forwarding, or a PDU session corresponding to the EPS bearer that needs to perform data forwarding;
  • the PDU session information includes one or more of the following: a data network name corresponding to the PDU session and network slice information to which the PDU session belongs.
  • the network function entity is a PGW-C+SMF entity
  • the determining module 802 is specifically configured to:
  • an embodiment of the present disclosure further provides a data relay device, which is applied to an SMF entity, and includes:
  • the receiving module 111 is configured to receive a mapping relationship between the EPS bearer information sent by the AMF entity or the PGW-C+SMF entity and the PDU session information.
  • the configuration module 112 is configured to configure a data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the mapping relationship between the EPS bearer information and the PDU session information is a mapping relationship between the ID of the EPS bearer that needs to receive the forwarded data and the ID of the QoS flow of the PDU session.
  • the configuration module 112 includes:
  • a first selection unit configured to select a UPF entity
  • a first configuration unit configured to allocate a core network tunnel identifier for data forwarding for the PDU session, and configure a forwarding tunnel between the UPF entity and the SGW for data forwarding and a PDU between the NG RAN and the 5G system Session tunnel
  • a first binding unit configured to bind, according to the mapping relationship between an ID of an EPS bearer that forwards data and an ID of a QoS flow of a PDU session, to bind the QoS flow of the PDU session to the data that needs to receive forwarding data.
  • the EPS carries the corresponding forwarding tunnel, so that the UPF entity can forward the data packet to the forwarding tunnel of the correct EPS bearer according to the QoS flow ID of the data packet.
  • the mapping relationship between the EPS bearer information and the PDU session information is an ID of a PDU session that needs to receive the forwarded data, and an ID of the related QoS flow in the PDU session.
  • the mapping module 112 includes:
  • a second selection unit configured to select a UPF entity
  • a second configuration unit configured to allocate a tunnel endpoint identifier for data forwarding for the EPS bearer, and configure a PDU session tunnel between the UPF entity and the NG RAN of the 5G system;
  • a second binding unit configured to bind the EPS bearer to the ID according to the ID of the PDU session that needs to receive the forwarding data and the mapping between the ID of the relevant QoS flow in the PDU session and the ID of the EPS bearer.
  • the forwarding tunnel corresponding to the PDU session that needs to receive the forwarding data so that the UPF entity can mark the data packet received from the tunnel of the EPS bearer with the correct QoS flow ID and forward it to the forwarding tunnel of the correct PDU session. on.
  • embodiments of the present disclosure also provide a network functional entity including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the program The following steps are implemented:
  • the mapping relationship between the EPS bearer information and the PDU session information is sent to the SMF entity, and the SMF entity configures a data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • Embodiments of the present disclosure also provide an SMF entity, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the program when implementing the following step:
  • an embodiment of the present disclosure further provides a network function entity, where the network function entity includes a bus 121, a transceiver 122, an antenna 123, a bus interface 124, a processor 125, and a memory 126.
  • the network function entity includes a bus 121, a transceiver 122, an antenna 123, a bus interface 124, a processor 125, and a memory 126.
  • the processor 125 is configured to read a program in the memory 126 and perform the following process:
  • the transceiver 122 is configured to receive and transmit data under the control of the processor 125.
  • the network function entity is an AMF entity, or a PGW-C+SMF entity.
  • the processor 125 is further configured to: obtain a mapping relationship between an ID of the EPS bearer that needs to receive the forwarding data and an ID of the QoS flow of the PDU session.
  • the network function entity is an AMF entity
  • the processor 125 is further configured to: control, by the transceiver, the ID of the EPS bearer that needs to receive the forwarding data from the MME entity.
  • the processor 125 is further configured to: control the transceiver 122 to provide the MME entity with an ID of an EPS bearer that needs to receive forwarding data to be selected.
  • the processor 125 is further configured to: control the transceiver 122 to obtain the QoS flow ID of the PDU session that needs to perform data forwarding from the NG RAN of the 5G system, and obtain the QoS flow ID and the EPS bearer of the PDU session from the PGW-C+SMF entity.
  • ID mapping relationship according to the mapping relationship between the QoS flow ID of the PDU session and the EPS bearer ID, determining the ID of the EPS bearer that needs to receive the forwarding data corresponding to the QoS flow ID of the PDU session that needs to perform data forwarding .
  • the processor 125 is further configured to: obtain an ID of the PDU session that needs to receive the forwarding data, and a mapping relationship between the ID of the relevant QoS flow in the PDU session and the ID of the EPS bearer. .
  • the network function entity is an AMF entity
  • the processor 125 is further configured to: control the transceiver 122 to obtain an ID of a QoS flow of the PDU session that needs to receive the forwarding data from the NG RAN of the 5G system.
  • the processor 125 is further configured to: control the transceiver 122 to provide the NG RAN with an ID of a QoS flow of the PDU session that needs to receive the forwarding data to be selected.
  • the processor 125 is further configured to: control the transceiver 122 to obtain an ID of an EPS bearer that needs to perform data forwarding from the MME entity, and determine an ID of the EPS bearer that is to be forwarded according to the requirement, and determine that the to-be-selected need to receive and forward. ID of the QoS flow of the PDU session of the data.
  • the processor 125 is further configured to: determine, according to location information of the UE, and/or PDU session information related to data forwarding, the SMF entity used for data forwarding; wherein, the PDU session related to data forwarding is required
  • the PDU session for data forwarding, or the PDU session corresponding to the EPS bearer that needs to perform data forwarding; the PDU session information includes one or more of the following: a data network name corresponding to the PDU session and network slice information to which the PDU session belongs.
  • the network function entity is a PGW-C+SMF entity
  • the processor 125 is further configured to: control the transceiver 122 to receive a request message sent by the AMF entity, and determine, according to the request message, the SMF for data forwarding. entity.
  • the network function entity shown in FIG. 12 may also be an SMF entity.
  • the processor 125 can execute the following process by reading a program in the memory 126:
  • the control transceiver 122 receives the mapping relationship between the EPS bearer information and the PDU session information sent by the AMF entity or the PGW-C+SMF entity, and configures the data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the mapping relationship between the EPS bearer information and the PDU session information is a mapping relationship between the ID of the EPS bearer that needs to receive the forwarded data and the ID of the QoS flow of the PDU session.
  • the processor 125 is further configured to: select a UPF entity, allocate a core network tunnel identifier for data forwarding for the PDU session, and configure a forwarding tunnel between the UPF entity and the SGW for data forwarding and an NG RAN with the 5G system.
  • the mapping relationship between the ID of the EPS bearer that forwards the data and the ID of the QoS flow of the PDU session, and the QoS flow of the PDU session is bound to the EPS that needs to receive the forwarded data.
  • the bearer is carried on the corresponding forwarding tunnel, so that the UPF entity can forward the data packet to the forwarding tunnel of the correct EPS bearer according to the QoS flow ID of the data packet.
  • the mapping relationship between the EPS bearer information and the PDU session information is an ID of a PDU session that needs to receive the forwarded data, and an ID and an EPS bearer of the related QoS flow in the PDU session.
  • the mapping relationship of the ID is an ID of a PDU session that needs to receive the forwarded data, and an ID and an EPS bearer of the related QoS flow in the PDU session.
  • the processor 125 is further configured to: select a UPF entity, allocate a tunnel endpoint identifier for data forwarding for the EPS bearer, and configure a PDU session tunnel between the UPF entity and the NG RAN of the 5G system, and receive the forwarding data according to the requirement
  • the ID of the PDU session and the mapping relationship between the ID of the QoS flow and the ID of the EPS bearer in the PDU session, and the EPS bearer is bound to the forwarding tunnel corresponding to the PDU session that needs to receive the forwarding data, so that The UPF entity can mark the data packet received from the tunnel of the EPS bearer with the correct QoS flow ID and forward it to the forwarding tunnel of the correct PDU session.
  • bus 121 may include any number of interconnected buses and bridges, and bus 121 will include one or more processors represented by processor 125 and memory represented by memory 126.
  • the various circuits are linked together.
  • the bus 121 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein.
  • Bus interface 124 provides an interface between bus 121 and transceiver 122.
  • Transceiver 122 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • Data processed by processor 125 is transmitted over wireless medium via antenna 123. Further, antenna 123 also receives the data and transmits the data to processor 125.
  • the processor 125 is responsible for managing the bus 121 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 126 can be used to store data used by the processor 125 when performing operations.
  • the processor 125 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • an embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, the program being executed by the processor to implement the following steps:
  • the mapping relationship between the EPS bearer information and the PDU session information is sent to the SMF entity, and the SMF entity configures a data forwarding tunnel according to the mapping relationship between the EPS bearer information and the PDU session information.
  • the network function entity is an AMF entity, or a PGW-C+SMF entity.
  • the following steps may be further implemented: acquiring a mapping relationship between an ID of an EPS bearer that needs to receive the forwarded data and an ID of the QoS flow of the PDU session. .
  • the network function entity is an AMF entity
  • the program when executed by the processor, the following step may be further implemented: acquiring an ID of an EPS bearer that needs to receive forwarding data from the MME entity.
  • the following step may be further implemented: providing the MME entity with an ID of an EPS bearer that needs to receive forwarding data to be selected.
  • the following steps may be implemented: obtaining a QoS flow ID of a PDU session that needs to perform data forwarding from an NG RAN of the 5G system, and acquiring a QoS flow of the PDU session from the PGW-C+SMF entity.
  • the mapping relationship between the ID and the EPS bearer ID is determined according to the mapping relationship between the QoS flow ID of the PDU session and the EPS bearer ID, and the QoS flow ID of the PDU session that needs to be forwarded by the data needs to be selected to receive the forwarding data. ID carried by EPS.
  • the following steps may be further performed: acquiring an ID of a PDU session that needs to receive the forwarding data, and an ID of the related QoS flow in the PDU session.
  • the mapping relationship with the ID of the EPS bearer may be further performed: acquiring an ID of a PDU session that needs to receive the forwarding data, and an ID of the related QoS flow in the PDU session.
  • the network function entity is an AMF entity
  • the following step may be further implemented: acquiring, from the NG RAN of the 5G system, an ID of the QoS flow of the PDU session that needs to receive the forwarding data.
  • the following step may be further implemented: providing the NG RAN with an ID of a QoS flow of the PDU session to be selected to receive the forwarding data.
  • the following steps may be implemented: obtaining an ID of an EPS bearer that needs to perform data forwarding from the MME entity, determining an ID of the EPS bearer that is forwarded according to the requirement, and determining the candidate to be selected.
  • the following steps may be further implemented: determining the SMF entity for data forwarding based on location information of the UE, and/or PDU session information related to data forwarding;
  • the data forwarding related PDU session is a PDU session that needs to perform data forwarding, or a PDU session corresponding to an EPS bearer that needs to perform data forwarding;
  • the PDU session information includes one or more of the following: a data network name and a PDU corresponding to the PDU session.
  • the network function entity is a PGW-C+SMF entity
  • the following steps may be further: receiving a request message sent by the AMF entity, and determining, according to the request message, that the data is used for data forwarding.
  • the SMF entity is a PGW-C+SMF entity
  • an embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, the program being executed by the processor to implement the following steps:
  • the mapping relationship between the EPS bearer information and the PDU session information is a mapping relationship between an ID of the EPS bearer that needs to receive the forwarded data and an ID of the QoS flow of the PDU session.
  • the following steps may be implemented: selecting a UPF entity, allocating a core network tunnel identifier for data forwarding for the PDU session, and configuring a forwarding tunnel between the UPF entity and the SGW for data forwarding And a PDU session tunnel with the NG RAN of the 5G system, and according to the mapping relationship between the ID of the EPS bearer that forwards the data and the ID of the QoS flow of the PDU session, the QoS flow of the PDU session is bound to the The forwarding tunnel corresponding to the EPS bearer that needs to receive the forwarding data enables the UPF entity to forward the data packet to the forwarding tunnel of the correct EPS bearer according to the QoS flow ID of the data packet.
  • the mapping relationship between the EPS bearer information and the PDU session information is an ID of a PDU session that needs to receive the forwarded data, and an ID and an EPS of the related QoS flow in the PDU session.
  • the mapping relationship of the bearer ID is an ID of a PDU session that needs to receive the forwarded data, and an ID and an EPS of the related QoS flow in the PDU session.
  • the following steps may be implemented: selecting a UPF entity, allocating a tunnel endpoint identifier for data forwarding for the EPS bearer, and configuring a PDU session tunnel between the UPF entity and the NG RAN of the 5G system, Determining, according to the mapping, the ID of the PDU session that needs to receive the forwarding data, and the mapping between the ID of the QoS flow in the PDU session and the ID of the EPS bearer, and binding the EPS bearer to the PDU session that needs to receive the forwarding data.
  • the UPF entity is enabled to mark the data packet received from the tunnel of the EPS bearer with the correct QoS flow ID and forward it to the forwarding tunnel of the correct PDU session.
  • Computer readable media includes both permanent and non-persistent, removable and non-removable media, and information storage can be implemented by any method or technology.
  • the information can be computer readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory. (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disk read only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape storage or other magnetic storage devices or any other non-transportable media can be used to store information that can be accessed by a computing device.
  • computer readable media does not include temporary storage of computer readable media, such as modulated data signals and carrier waves.
  • the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present disclosure, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM).
  • the instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in various embodiments of the present disclosure.

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Abstract

本公开实施例提供了一种数据中转方法、装置、网络功能实体及SMF实体。所述数据中转方法包括：获取EPS承载信息与PDU会话信息的映射关系，将EPS承载信息与PDU会话信息的映射关系发送到SMF实体，由SMF实体根据EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。根据本公开实施例的方案，能够避免转发数据传输的冗余，减少数据转发的时延，提高转发数据传输的效率。

Description

一种数据中转方法、装置、网络功能实体及SMF实体
相关申请的交叉引用
本申请主张在2017年6月15日在中国提交的中国专利申请号No.201710453889.2和在2017年6月16日在中国提交的中国专利申请号No.201710458659.5的优先权，其全部内容通过引用包含于此。
技术领域
本公开实施例涉及通信技术领域，尤其涉及一种数据中转方法、装置、网络功能实体及SMF实体。
背景技术
当前，为了保证第五代移动通信系统(5G，5th Generation)的正常运行，5G网络需要支持与通用移动通信技术的长期演进(LTE，Long Term Evolution)网络的互操作，其中一种单注册模式的互操作方式能够使用户设备(UE，User Equipment)在5G网络与LTE网络之间完成系统间inter-RAT切换。在切换过程中，由于5G网络的数据传输方式和LTE网络的数据传输方式不同，因此在不同系统间进行数据转发时，要求支持数据转发的核心网功能实体能够正确的将从一个系统中收到的数据映射到另一个系统的传输通路上。目前的互操作方案中，使用同时支持公用数据网网关用户面功能PGW-U和用户面功能UPF的PGW-U+UPF实体来完成数据转发。但这种将转发数据路由到PGW-U+UPF实体的方法，会造成冗余的数据路由，并增加数据转发的时延。
目前，在5G网络和LTE网络的互操作场景中，由PGW-U+UPF实体作为数据中转节点，这要求将会话的锚点下发的数据先重新路由回锚点，再转发到目标基站。因此，传统的在互操作场景中的数据中转方法，会造成转发数据传输冗余，数据转发的时延大，转发数据传输的效率低，尤其是在使用家乡路由的漫游场景下。
发明内容
本公开实施例的目的在于提供一种数据中转方法、装置、网络功能实体及SMF实体，以解决传统的在互操作场景中的数据中转方法，造成的转发数据传输冗余，数据转发的时延大的技术问题。
第一方面，本公开实施例提供了一种数据中转方法，应用于网络功能实体，包括：
获取EPS承载信息与PDU会话信息的映射关系；以及
将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
在本公开的一个可行实施例中，在所述获取EPS承载信息与PDU会话信息的映射关系的步骤之后，所述数据中转方法还可包括：确定用于数据转发的SMF实体。
在本公开的一个可行实施例中，所述网络功能实体为AMF实体，或者PGW-C+SMF实体。
在本公开的一个可行实施例中，当数据从5G系统转发到LTE系统时，所述获取EPS承载信息与PDU会话信息的映射关系，包括：
获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。
在本公开的一个可行实施例中，所述网络功能实体为AMF实体，所述获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系之前，所述方法还包括：
从MME实体获取需要接收转发数据的EPS承载的ID。
在本公开的一个可行实施例中，所述从MME实体获取需要接收转发数据的EPS承载的ID之前，所述方法还包括：
向所述MME实体提供待选的需要接收转发数据的EPS承载的ID。
在本公开的一个可行实施例中，所述向所述MME实体提供待选的需要接收转发数据的EPS承载的ID之前，所述方法还包括：
从5G系统的NG RAN获取需要进行数据转发的PDU会话的QoS流ID；
从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射 关系；以及
根据所述PDU会话的QoS流ID与EPS承载ID的映射关系，确定所述需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
在本公开的一个可行实施例中，当数据从LTE系统转发到5G系统时，所述获取EPS承载信息与PDU会话信息的映射关系，包括：
获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。
在本公开的一个可行实施例中，所述网络功能实体为AMF实体，所述获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系之前，所述方法还包括：
从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
在本公开的一个可行实施例中，所述从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID之前，所述方法还包括：
向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID。
在本公开的一个可行实施例中，所述向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID之前，所述方法还包括：
从MME实体获取需要进行数据转发的EPS承载的ID；以及
根据所述需要进行数据转发的EPS承载的ID，确定所述待选的需要接收转发数据的PDU会话的QoS流的ID。
在本公开的一个可行实施例中，所述确定用于数据转发的SMF实体，包括：
基于UE的位置信息，和/或与数据转发相关的PDU会话信息，确定用于数据转发的所述SMF实体；
其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话；
所述PDU会话信息包括以下一项或多项：PDU会话对应的数据网络名 称和PDU会话所属的网络切片信息。
在本公开的一个可行实施例中，所述网络功能实体为PGW-C+SMF实体，所述确定用于数据转发的会话管理功能SMF实体，包括：
接收AMF实体发送的请求消息；以及
根据所述请求消息，确定用于数据转发的所述SMF实体。
第二方面，本公开实施例提供了一种数据中转方法，应用于SMF实体，包括：
接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系；以及
根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
在本公开的一个可行实施例中，当数据从5G系统转发到LTE系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，所述根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道，包括：
选择UPF实体；
为PDU会话分配用于数据转发的核心网隧道标识，并配置所述UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道；以及
根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将所述PDU会话的QoS流绑定到所述需要接收转发数据的EPS承载对应的转发隧道上，使得所述UPF实体能够根据数据包的QoS流ID，将所述数据包转发到正确的EPS承载的转发隧道上。
在本公开的一个可行实施例中，当数据从LTE系统转发到5G系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，所述根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道，包括：
选择UPF实体；
为EPS承载分配用于数据转发的隧道端点标识，并配置所述UPF实体与5G系统的NG RAN之间的PDU会话隧道；以及
根据所述需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将所述EPS承载绑定到所述需要接收转发数据的PDU会话对应的转发隧道上，使得所述UPF实体能够将从所述EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
第三方面，本公开实施例提供了一种数据中转装置，应用于网络功能实体，包括：
第一获取模块，用于获取EPS承载信息与PDU会话信息的映射关系；
确定模块，用于确定用于数据转发的SMF实体；以及
第一发送模块，用于将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系配置数据转发隧道。
在本公开的一个可行实施例中，所述网络功能实体为AMF实体，或者PGW-C+SMF实体。
在本公开的一个可行实施例中，当数据从5G系统转发到LTE系统时，所述第一获取模块具体用于：
获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。
在本公开的一个可行实施例中，所述网络功能实体为AMF实体，所述装置还包括：
第二获取模块，用于从MME实体获取需要接收转发数据的EPS承载的ID。
在本公开的一个可行实施例中，所述装置还包括：
第二发送模块，用于向所述MME实体提供待选的需要接收转发数据的EPS承载的ID。
在本公开的一个可行实施例中，所述装置还包括：
第三获取模块，用于从5G系统的NG RAN获取需要进行数据转发的PDU 会话的QoS流ID；
第四获取模块，用于从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射关系；以及
第一确定模块，用于根据所述PDU会话的QoS流ID与EPS承载ID的映射关系，确定所述需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
在本公开的一个可行实施例中，当数据从LTE系统转发到5G系统时，所述第一获取模块用于：
获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。
在本公开的一个可行实施例中，所述网络功能实体为AMF实体，所述装置还包括：
第五获取模块，用于从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
在本公开的一个可行实施例中，所述装置还包括：
第三发送模块，用于向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID。
在本公开的一个可行实施例中，所述装置还包括：
第六获取模块，用于从MME实体获取需要进行数据转发的EPS承载的ID；以及
第二确定模块，用于根据所述需要进行数据转发的EPS承载的ID，确定所述待选的需要接收转发数据的PDU会话的QoS流的ID。
在本公开的一个可行实施例中，所述确定模块具体用于：
基于UE的位置信息，和/或与数据转发相关的PDU会话信息，确定用于数据转发的所述SMF实体；
其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话；
所述PDU会话信息包括以下一项或多项：PDU会话对应的数据网络名称和PDU会话所属的网络切片信息。
在本公开的一个可行实施例中，所述网络功能实体为PGW-C+SMF实体，所述确定模块用于：
接收AMF实体发送的请求消息，并根据所述请求消息，确定用于数据转发的所述SMF实体。
第四方面，本公开实施例提供了一种数据中转装置，应用于SMF实体，包括：
接收模块，用于接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系；以及
配置模块，用于根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
在本公开的一个可行实施例中，当数据从5G系统转发到LTE系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，所述配置模块包括：
第一选择单元，用于选择UPF实体；
第一配置单元，用于为PDU会话分配用于数据转发的核心网隧道标识，并配置所述UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道；以及
第一绑定单元，用于根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将所述PDU会话的QoS流绑定到所述需要接收转发数据的EPS承载对应的转发隧道上，使得所述UPF实体能够根据数据包的QoS流ID，将所述数据包转发到正确的EPS承载的转发隧道上。
在本公开的一个可行实施例中，当数据从LTE系统转发到5G系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，所述配置模块包括：
第二选择单元，用于选择UPF实体；
第二配置单元，用于为EPS承载分配用于数据转发的隧道端点标识，并配置所述UPF实体与5G系统的NG RAN之间的PDU会话隧道；以及
第二绑定单元，用于根据所述需要接收转发数据的PDU会话的ID以及 所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将所述EPS承载绑定到所述需要接收转发数据的PDU会话对应的转发隧道上，使得所述UPF实体能够将从所述EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
第五方面，本公开实施例提供了一种网络功能实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述处理器执行所述程序时实现如在第一方面所述的数据中转方法中的步骤。
第六方面，本公开实施例提供了一种SMF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述处理器执行所述程序时实现如在第二方面所述的数据中转方法中的步骤。
第七方面，本公开实施例提供了一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现如在第一方面所述的数据中转方法中的步骤。
第八方面，本公开实施例提供了一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现如在第二方面所述的数据中转方法中的步骤。
根据本公开实施例所提供的数据中转方法，通过获取EPS承载信息与PDU会话信息的映射关系，确定用于数据转发的SMF实体，将EPS承载信息与PDU会话信息的映射关系发送到SMF实体，由SMF实体根据EPS承载信息与PDU会话信息的映射关系配置数据转发隧道，能够避免由PGW-U+UPF实体作为数据转发节点，从而避免转发数据传输的冗余，减少数据转发的时延，提高转发数据传输的效率。
附图说明
为了更清楚地说明本公开文本实施例或相关技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开文本的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1表示本公开实施例的数据中转方法的流程图；
图2表示本公开具体实例一的数据中转过程的流程图；
图3表示本公开具体实例二的数据中转过程的流程图；
图4表示本公开具体实例三的数据中转过程的流程图；
图5表示本公开具体实例四的数据中转过程的流程图；
图6表示本公开具体实例五的数据中转过程的流程图；
图7表示本公开实施例的另一数据中转方法的流程图；
图8表示本公开实施例的数据中转装置的结构示意图之一；
图9表示本公开实施例的数据中转装置的结构示意图之二；
图10表示本公开实施例的数据中转装置的结构示意图之三；
图11表示本公开实施例的数据中转装置的结构示意图之四；以及
图12表示本公开实施例的网络功能实体的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开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公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开实施例保护的范围。
在支持5G网络和LTE网络互操作的网络架构中，LTE网络中的移动性管理功能(MME，Mobility Management Entity)实体和5G网络中的接入与移动性管理功能(AMF，Authentication Management Function)实体之间的Nx接口是可选支持的。当网络支持Nx接口时，网络可以支持5G网络和LTE网络之间的切换，此时MME实体和AMF实体之间需要传递UE的上下文信息，包括移动性上下文和会话连接的上下文。UE接入这种支持Nx接口的网络时，网络可能将其注册模式配置为单注册模式，即single registration mode，目前单注册模式是强制要求UE支持的工作模式。
其中，单注册模式下的5G网络到LTE网络的切换过程主要为：
S1：AMF实体接收到无线接入网(RAN，Radio Access Network)的切换请求后，请求所有会话管理功能(SMF，Session Management Function)实体返回由PDU会话上下文映射生成的演进的分组系统(EPS，Evolved Packet  System)承载上下文；
S2：AMF实体接收到所有SMF实体返回的EPS承载上下文之后，结合UE的移动性上下文，生成UE上下文，并通过Nx接口传递给MME实体；
S3：目标侧MME实体将Nx接口视作S10接口，即将AMF实体看成MME实体，目标侧MME实体从Nx接口接收到UE上下文之后，按照现有EPS系统的S1切换流程继续后续流程；
S4：当SMF实体/PGW-C实体确定UE的会话切换到LTE网络后，可能发起专用承载激活过程来为某些non-GRB QoS流建立专用承载。
而单注册模式下的LTE网络到5G网络的切换准备过程主要为：
S1：MME实体接收到演进的UMTS陆地无线接入网E-UTRAN的切换请求后，确定目标AMF实体，并发送EPS承载上下文到AMF实体；
S2：AMF实体接收到MME实体的请求后，完成EPS移动性管理上下文到5GS移动性管理上下文的转换，其中MME实体提供的UE上下文中包括EPS承载上下文，而EPS承载上下文中包含PGW-C+SMF实体的地址以及PGW-U+UPF实体的上行隧道信息；
S3：AMF实体发送请求消息到PGW-C+SMF实体上，请求PGW-C+SMF实体返回PDU会话标识ID、QoS Rules、EPS承载列表等信息；
S4：AMF实体发送切换请求消息到5G网络中的下一代无线接入网NG RAN，请求建立空口承载；
S5：NG RAN向AMF实体返回ACK消息，消息中携带用于数据转发的N3接口的RAN侧隧道信息；
S6：AMF实体向PGW-C+SMF实体发送请求消息，携带用于数据转发的N3接口的RAN侧隧道信息；
S7：PGW-C+SMF实体向AMF实体返回PDU会话ID和EPS承载列表，其中EPS承载列表中包括在5G系统中建立的承载信息，包括需要数据中转的承载的核心网隧道信息；
S8：AMF实体向MME实体返回响应消息，消息中携带EPS承载列表，使得MME实体可以使用其中的需要数据中转的承载的核心网隧道信息来请求服务网关(SGW，Serving Gate Way)创建转发隧道。
目前，在5G网络和LTE网络的互操作场景中，由PGW-U+UPF实体作为数据中转节点，这要求将会话的锚点下发的数据先重新路由回锚点，再转发到目标基站。因此，传统的在互操作场景中的数据中转方法，会造成转发数据传输冗余，数据转发的时延大，转发数据传输的效率低，尤其是在使用家乡路由的漫游场景下。
参见图1所示，本公开实施例提供了一种数据中转方法，应用于网络功能实体，包括以下步骤：
步骤101：获取EPS承载信息与PDU会话信息的映射关系。
其中，本公开实施例中的网络功能实体可以为核心接入和移动性管理功能AMF实体，也可以为同时支持公用数据网网关控制面功能PGW-C和锚点SMF的PGW-C+SMF实体。
本公开实施例的数据中转方法，可适用于5G网络和LTE网络的互操作场景，数据可以从5G系统转发到LTE系统，也可以从LTE系统转发到5G系统。当数据从5G系统转发到LTE系统时，所述获取EPS承载信息与PDU会话信息的映射关系可具体为：获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。此外，当数据从5G系统转发到LTE系统时，所述获取EPS承载信息与PDU会话信息的映射关系还可为：获取EPS承载的ID与需要进行数据转发的PDU会话的QoS流的ID的映射关系。
而当数据从LTE系统转发到5G系统时，所述获取EPS承载信息与PDU会话信息的映射关系可具体为：获取需要接收转发数据的PDU会话的ID以及PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。此外，当数据从LTE系统转发到5G系统时，所述获取EPS承载信息与PDU会话信息的映射关系还可为：获取需要进行数据转发的EPS承载的ID与PDU会话的ID以及PDU会话中相关QoS流的ID的映射关系。
步骤102：确定用于数据转发的SMF实体。
其中，此步骤确定的SMF实体具体可为中间SMF实体。网络功能实体在确定用于数据转发的SMF实体时，可基于UE的位置信息，和/或与数据转发相关的PDU会话信息，进行确定。
具体的，本公开实施例中，步骤102可为：
基于UE的位置信息，和/或与数据转发相关的PDU会话信息，确定用于数据转发的SMF实体。
其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话。而PDU会话信息可包括以下一项或多项：PDU会话对应的数据网络名称(DNN，Data Network Name)和PDU会话所属的网络切片信息。
本公开实施例中，当网络功能主体为PGW-C+SMF实体时，PGW-C+SMF实体确定用于数据转发的SMF实体的过程可为：
接收AMF实体发送的请求消息；
根据接收到的请求消息，确定用于数据转发的SMF实体。
在具体实施过程中，如果UE处于非漫游态，即在家乡网络中，所确定的用于数据转发的SMF实体可能为PGW-C+SMF实体，此时，向PGW-C+SMF实体发送所述EPS承载信息与PDU会话信息的映射关系的步骤可省略。另一方面，如果UE处于漫游态，即在拜访网络中，所确定的用于转发的SMF实体可能为相关技术中的服务该PDU会话的V-SMF(visitor SMF，拜访网络中SMF)实体。
步骤103：将EPS承载信息与PDU会话信息的映射关系发送到SMF实体，由SMF实体根据EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
其中，当EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系时，SMF实体配置数据转发隧道的过程可具体为：首先，选择UPF实体；然后，为PDU会话分配用于数据转发的核心网隧道标识，并配置UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道；最后，根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将PDU会话的QoS流绑定到需要接收转发数据的EPS承载对应的转发隧道上，使得UPF实体能够根据数据包的QoS流ID，将该数据包转发到正确的EPS承载的转发隧道上。
而当EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的 PDU会话的ID以及PDU会话中相关QoS流的ID与EPS承载的ID的映射关系时，SMF实体配置数据转发隧道的过程可具体为：首先，选择UPF实体；然后，为EPS承载分配用于数据转发的隧道端点标识，并配置UPF实体与5G系统的NG RAN之间的PDU会话隧道；最后，根据所述需要接收转发数据的PDU会话的ID以及PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将EPS承载绑定到需要接收转发数据的PDU会话对应的转发隧道上，使得UPF实体能够将从EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
本公开实施例的数据中转方法，通过获取EPS承载信息与PDU会话信息的映射关系，确定用于数据转发的SMF实体，将EPS承载信息与PDU会话信息的映射关系发送到SMF实体，由SMF实体根据EPS承载信息与PDU会话信息的映射关系配置数据转发隧道，能够避免由PGW-U+UPF实体作为数据转发节点，从而避免转发数据传输的冗余，减少数据转发的时延，提高转发数据传输的效率。
本公开实施例中，当EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系时，AMF实体为了获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，在获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系之前，还可从MME实体获取需要接收转发数据的EPS承载的ID。
进一步的，AMF实体在从MME实体获取需要接收转发数据的EPS承载的ID之前，还可向MME实体提供待选的需要接收转发数据的EPS承载的ID，以使LTE网络根据待选的需要接收转发数据的EPS承载的ID，确定出最终的需要接收转发数据的EPS承载的ID。
在具体实施过程中，可选的，LTE网络中的eNB根据源5G网络中的NG RAN封装在源到目标的透明容器中的需要进行数据转发的PDU会话的QoS流与映射生成的EPS承载的映射关系，确定出最终的需要接收转发数据的EPS承载的ID。
进一步的，AMF实体在向MME实体提供待选的需要接收转发数据的 EPS承载的ID之前，还需确定待选的需要接收转发数据的EPS承载的ID。而AMF实体确定待选的需要接收转发数据的EPS承载的ID的过程可为：
从5G系统的NG RAN获取需要进行数据转发的PDU会话的QoS流ID；
从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射关系；以及
根据PDU会话的QoS流ID与EPS承载ID的映射关系，确定需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
本公开实施例中，当EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系时，AMF实体为了获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，在获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系之前，还可从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
进一步的，AMF实体在从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID之前，还可向NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID，以使NG RAN根据待选的需要接收转发数据的PDU会话的QoS流的ID，确定出最终的需要接收转发数据的PDU会话的QoS流的ID。
在具体实施过程中，可选的，NG RAN根据LTE网络中的eNB封装在源到目标的透明容器中的需要进行数据转发的EPS承载与映射生成的映射关系，确定出最终的需要接收转发数据的PDU会话的QoS流的ID。
进一步的，AMF实体在向NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID之前，还需确定待选的需要接收转发数据的PDU会话的QoS流的ID。而AMF实体确定待选的需要接收转发数据的PDU会话的QoS流的ID的过程可为：
从MME实体获取需要进行数据转发的EPS承载的ID；以及
根据需要进行数据转发的EPS承载的ID，确定待选的需要接收转发数据 的PDU会话的QoS流的ID。
下面，结合图2至图6分别对本公开具体实例一至五的数据中转过程进行说明。
实例一
请参考图2，表示本公开具体实例一的数据中转过程的流程图。实例一中，数据由5G系统转发到LTE系统，且由AMF实体请求创建转发隧道。实例一的数据中转过程包括以下步骤：
步骤201：5G系统的NG RAN向AMF实体发送切换请求消息；其中，切换请求(Handover Request)消息中携带需要进行数据转发(或称为数据中转)的PDU会话的QoS流信息，该QoS流信息包括QoS流的ID，及其所属PDU会话的ID；
步骤202：AMF实体根据PDU会话ID确定对应的PGW-C+SMF实体，并向该PGW-C+SMF实体发送会话管理请求(SM Request)消息；其中，会话管理请求消息中携带需要进行数据转发的PDU会话的QoS流的ID；
步骤203：PGW-C+SMF实体根据EPS承载与QoS流的映射参数，确定PDU会话的QoS流ID与EPS承载ID的映射关系，确定QoS流对应的EPS承载上下文，并向AMF实体返回会话管理响应(SM Response)消息；其中，会话管理响应消息中携带确定的EPS承载上下文；
步骤204：AMF实体通过前向重定位请求(Forward relocation Request)消息将PGW-C+SMF实体提供的映射的EPS承载上下文转发给MME实体；其中，EPS承载上下文中包括需要接收转发数据的EPS承载的信息；
步骤205：MME实体根据接收到的EPS承载信息，发送切换请求消息给E-UTRAN中的目标eNB；其中，切换请求消息中携带相应的EPS承载信息，比如EPS承载ID；
步骤206：目标eNB根据EPS承载信息，为相应的承载分配转发隧道端点标识TEID，并在切换响应(Handover Request ACK)消息中返回TEID给MME实体；
步骤207：MME实体利用现有的过程与SGW创建间接数据转发隧道，并分配TEID；
步骤208：MME实体向AMF实体发送前向重定位响应(Forward relocation Response)消息，以向AMF实体返回用于数据转发的SGW所分配的TEID，及其关联的EPS承载ID；
步骤209：AMF实体基于UE的位置信息，为各PDU会话确定用于数据转发的SMF(IWK SMF)实体；
步骤210：AMF实体发送创建转发隧道请求(Create Indirect DF Tunnel Request)消息到确定的SMF实体；其中，创建转发隧道请求消息中携带需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，以及EPS承载上下文，比如EPS承载ID、EPS承载对应的SGW TEID和服务质量流标识QFI(QoS流ID)；
步骤211：SMF实体选择UPF实体，为PDU会话分配用于数据转发的N3接口的核心网隧道标识，建立与NG RAN之间的N3PDU会话隧道，并根据EPS承载对应的SGW TEID配置该UPF与用于数据转发的SGW之间的转发隧道，并根据EPS承载ID与PDU会话的QoS流ID的映射关系，将QoS流绑定到EPS承载对应的转发隧道上，使得UPF能够根据数据包的QFI，将数据包映射到正确的转发隧道上；
步骤212：SMF实体发送创建转发隧道响应(Create Indirect DF Tunnel Response)消息给AMF实体；其中，创建转发隧道响应消息中携带用于数据转发的N3接口的核心网隧道标识；
步骤213：AMF实体发送切换指令(Handover Command，可携带用于数据转发的N3接口的核心网隧道标识)到NG RAN，使得NG RAN上缓存的数据可以转发到UPF上，UPF根据数据包头的QFI，将数据包映射到正确的转发隧道，UPF剥离数据包头的QFI，并将数据转发到SGW，即AMF实体完成后续切换流程；
步骤214：NG RAN发送切换指令到UE。
实例二
请参考图3，表示本公开具体实例二的数据中转过程的流程图。实例二中，数据由5G系统转发到LTE系统，且由PGW-C+SMF实体请求创建转发隧道。实例二的数据中转过程包括以下步骤：
步骤301：NG RAN向AMF实体发送切换请求消息；其中，切换请求消息中携带需要进行数据转发的PDU会话的QoS流信息，该QoS流信息包括QoS流的ID，及其所属PDU会话的ID；
步骤302：AMF实体根据PDU会话ID确定对应的PGW-C+SMF实体，并向该PGW-C+SMF实体发送会话管理请求消息；其中，会话管理请求消息中携带需要进行数据转发的PDU会话的QoS流的ID；
步骤303：PGW-C+SMF实体根据EPS承载与QoS流的映射参数，确定PDU会话的QoS流ID与EPS承载ID的映射关系，确定QoS流对应的EPS承载上下文，并向AMF实体返回会话管理响应消息；其中，会话管理响应消息携带确定的EPS承载上下文；
步骤304：AMF通过前向重定位请求消息将PGW-C+SMF实体提供的映射的EPS承载上下文转发给MME实体；其中，EPS承载上下文中包括需要接收转发数据的EPS承载的信息；
步骤305：MME实体根据接收到的EPS承载信息，发送切换请求消息给E-UTRAN中的目标基站eNB；其中，切换请求消息中携带相应的EPS承载信息，比如EPS承载ID；
步骤306：目标eNB根据EPS承载信息，为相应的承载分配转发隧道端点标识TEID，并在切换响应消息中返回TEID给MME实体；
步骤307：MME实体利用现有的过程与服务网关SGW创建间接数据转发隧道，并分配TEID；
步骤308：MME实体向AMF实体发送前向重定位响应消息，以向AMF实体返回用于数据转发的SGW所分配的TEID，及其关联的EPS承载ID；
步骤309：AMF实体根据接收到的EPS承载ID与PDU会话的QoS流的映射关系，发送创建转发隧道请求消息到PGW-C+SMF实体；其中，创建转发隧道请求消息中携带EPS承载ID和EPS承载对应的SGW TEID；
步骤310：PGW-C+SMF实体基于UE的位置信息，为各PDU会话确定用于数据转发的中间SMF实体；
步骤311：PGW-C+SMF实体发送创建转发隧道请求消息到确定的中间SMF实体；其中，创建转发隧道请求消息中携带需要接收转发数据的EPS承 载的ID与PDU会话的QoS流的ID的映射关系，以及EPS承载对应的SGW TEID；
步骤312：中间SMF实体选择UPF实体，为PDU会话分配用于数据转发的N3接口的核心网隧道标识，建立与NG RAN之间的N3PDU会话隧道，并根据EPS承载对应的SGW TEID配置该UPF与用于数据转发的SGW之间的转发隧道，并根据EPS承载ID与PDU会话的QoS流ID的映射关系，将QoS流绑定到EPS承载对应的转发隧道上，使得UPF能够根据数据包的QoS流ID，将数据包映射到正确的转发隧道上；
步骤313：中间SMF实体发送创建转发隧道响应消息给PGW-C+SMF实体；其中，创建转发隧道响应消息中携带用于数据转发的N3接口的核心网隧道标识；
步骤314：PGW-C+SMF实体发送创建转发隧道响应消息给AMF实体；其中，创建转发隧道响应消息中携带用于数据转发的N3接口的核心网隧道标识；
步骤315：AMF实体发送切换指令(携带用于数据转发的N3接口的核心网隧道标识)到NG RAN，使得NG RAN上缓存的数据可以转发到UPF上，UPF根据数据包头的QFI，将数据包映射到正确的转发隧道，UPF剥离数据包头的QFI，并将数据转发到SGW，即AMF实体完成后续切换过程；
步骤316：NG RAN发送切换指令到UE。
上述实例一和实例二中，数据由5G系统转发到LTE系统，但除此数据转发方式外，数据也可由LTE系统转发到5G系统，例如实例三至实例五。
实例三
请参考图4，表示本公开具体实例三的数据中转过程的流程图。实例三中，数据由LTE系统转发到5G系统，且由AMF实体本地完成EPS承载和PDU会话的映射，并请求创建转发隧道。实例三的数据中转过程包括以下步骤：
步骤401：E-UTRAN中的eNB向MME实体发送切换请求消息；其中，切换请求消息中携带需要进行数据转发的EPS承载的ID；
步骤402：MME实体通过前向重定位请求消息将EPS承载上下文转发到 AMF实体，其中携带需要进行数据转发的EPS承载信息；
步骤403：AMF实体根据接收到的EPS承载上下，将其中的默认承载ID映射为PDU会话ID，所有的专用承载ID映射为QoS流ID，并确定各PDU会话中包含的QoS流；
步骤404：AMF实体根据进行数据转发的EPS承载ID和步骤403中的映射关系，确定需要接收转发数据的PDU会话信息，并通过切换请求消息向目标NG RAN转发；
步骤405：目标NG RAN根据接收到的PDU会话信息，为相应的PDU会话分配用于数据转发的N3接口的接入网隧道，并在切换响应消息中返回给AMF实体；
步骤406：AMF实体根据NG RAN返回的的信息，为各需要接收转发数据的PDU会话确定用于数据中转的SMF实体，其中，AMF实体基于UE的位置信息确定SMF实体；
步骤407：AMF实体发送创建转发隧道请求消息给SMF实体；其中，创建转发隧道请求消息中携带EPS承载ID与PDU会话的QoS流ID的映射关系、EPS承载ID、QFI以及PDU会话对应的用于数据转发的N3接口的接入网隧道信息；
步骤408：SMF实体选择UPF实体，为每条EPS承载分配用于数据转发的GTP隧道端点标识TEID，建立与NG RAN之间的N3PDU会话隧道，并将EPS承载绑定到PDU会话对应的转发隧道上，并建立PDU会话ID与EPS承载ID的映射关系，使得UPF能够将从EPS承载对应的GTP隧道收到的数据包打上正确的QoS流ID，并将该数据包映射到正确PDU会话的转发隧道上；
步骤409：SMF实体发送创建转发隧道响应消息给AMF实体；其中，创建转发隧道响应消息中携带分配的用于数据转发的GTP隧道端点标识TEID；
步骤410：AMF实体向MME实体发送前向重定位响应消息；其中，前向重定位响应消息中携带GTP隧道端点标识TEID；
步骤411：MME实体利用现有的过程与SGW之间创建转发隧道，即向SGW发送创建转发隧道请求消息，创建转发隧道请求消息中携带GTP隧道 端点标识TEID，并接收SGW发送创建转发隧道响应消息；
步骤412：MME实体发送切换指令到NG RAN，可携带用于数据转发的SGW TEID，即MME实体完成后续切换流程；
步骤413：NG RAN发送切换指令到UE。
实例四
请参考图5，表示本公开具体实例四的数据中转过程的流程图。实例四中，数据由LTE系统转发到5G系统，且由AMF实体请求创建转发隧道。实例四的数据中转过程包括以下步骤：
步骤501：E-UTRAN中的eNB向MME实体发送切换请求消息；其中，切换请求消息中携带需要进行数据转发的EPS承载的ID；
步骤502：MME实体通过前向重定位请求消息将EPS承载ID转发到AMF实体；
步骤503：AMF实体根据接收到的EPS承载ID，确定服务EPS承载的PGW-C+SMF实体，并向PGW-C+SMF实体发送会话管理请求消息；其中，会话管理请求消息中携带EPS承载ID；
步骤504：PGW-C+SMF实体根据EPS承载与QoS流的映射参数，确定EPS承载映射的QoS流ID，以及QoS流所属的PDU会话ID，并通过会话管理响应消息向AMF实体返回；
步骤505：AMF实体根据SMF实体返回的PDU会话信息，向目标NG RAN发送切换请求消息，其中携带PDU会话ID；
步骤506：目标NG RAN根据接收到的PDU会话信息，为相应的PDU会话分配用于数据转发的N3接口的接入网隧道，并在切换响应消息中返回给AMF实体；
步骤507：AMF实体根据NG RAN返回的的信息，为各PDU会话确定用于数据中转的SMF实体，其中，AMF实体基于UE的位置信息确定SMF实体；
步骤508：AMF实体发送创建转发隧道请求消息给SMF实体；其中，创建转发隧道请求消息中携带EPS承载ID与PDU会话的QoS流ID的映射关系、EPS承载ID、QFI以及PDU会话对应的用于数据转发的N3接口的接入 网隧道信息；
步骤509：SMF实体选择UPF实体，为每条EPS承载分配用于数据转发的GTP隧道端点标识TEID，建立与NG RAN之间的N3PDU会话隧道，并将EPS承载绑定到PDU会话对应的转发隧道上，并建立PDU会话ID与EPS承载ID的映射关系列表，使得UPF能够将从EPS承载对应的GTP隧道收到的数据包打上正确的QoS流ID，并将该数据包映射到正确PDU会话的转发隧道上；
步骤510：SMF实体发送创建转发隧道响应消息给AMF实体；其中，创建转发隧道响应消息中携带分配的用于数据转发的GTP隧道端点标识TEID；
步骤511：AMF实体向MME实体发送前向重定位响应消息；其中，前向重定位响应消息中携带GTP隧道端点标识TEID；
步骤512：MME实体利用现有的过程与SGW之间创建转发隧道，即向SGW发送创建转发隧道请求消息，创建转发隧道请求消息中携带GTP隧道端点标识TEID，并接收SGW发送创建转发隧道响应消息；
步骤513：MME实体发送切换指令到NG RAN，可携带用于数据转发的SGW TEID，即MME实体完成后续切换流程；
步骤514：NG RAN发送切换指令到UE。
实例五
请参考图6，表示本公开具体实例五的数据中转过程的流程图。实例五中，数据由LTE系统转发到5G系统，且由PGW-C+SMF实体请求创建转发隧道。实例五的数据中转过程包括以下步骤：
步骤601：E-UTRAN中的eNB向MME实体发送切换请求消息；其中，切换请求消息中携带需要进行数据转发的EPS承载的ID；
步骤602：MME实体通过前向重定位请求消息将EPS承载ID转发到AMF实体；
步骤603：AMF实体根据接收到的EPS承载ID，确定服务EPS承载的PGW-C+SMF实体，并向PGW-C+SMF实体发送会话管理请求消息；其中，会话管理请求消息中携带EPS承载ID；
步骤604：PGW-C+SMF实体根据EPS承载与QoS流的映射参数，确定 EPS承载映射的QoS流ID，以及QoS流所属的PDU会话ID，并通过会话管理响应消息向AMF实体返回；
步骤605：AMF实体根据SMF实体返回的PDU会话信息，向目标NG RAN发送切换请求消息，其中携带PDU会话ID；
步骤606：目标NG RAN根据接收到的PDU会话信息，为各需要接收转发数据的PDU会话分配用于数据转发的N3接口的接入网隧道，并在切换响应消息中返回给AMF实体；
步骤607：AMF实体根据NG RAN返回的的信息，发送创建转发隧道请求消息到PGW-C+SMF实体，请求PGW-C+SMF实体确定用于数据中转的SMF实体；其中，创建转发隧道请求消息中携带EPS承载ID，以及EPS承载所对应的PDU会话对应的用于数据转发的接入网隧道信息；
步骤608：PGW-C+SMF实体基于UE的位置信息，确定用于数据中转的SMF实体；
步骤609：PGW-C+SMF实体向SMF实体发送创建转发隧道请求消息给SMF实体；其中，创建转发隧道请求消息中携带EPS承载ID与PDU会话的QoS流ID的映射关系、EPS承载ID、QFI以及PDU会话对应的用于数据转发的N3接口的接入网隧道信息；
步骤610：SMF实体选择UPF实体，为每条EPS承载分配用于数据转发的GTP隧道端点标识TEID，建立与NG RAN之间的N3PDU会话隧道，并将EPS承载绑定到PDU会话对应的转发隧道上，并建立PDU会话ID与EPS承载ID的映射关系列表，使得UPF能够将从EPS承载对应的GTP隧道收到的数据包打上正确的QoS流ID，并将该数据包映射到正确PDU会话的转发隧道上；
步骤611：SMF实体发送创建转发隧道响应消息给PGW-C+SMF实体；其中，创建转发隧道响应消息中携带分配的用于数据转发的GTP隧道端点标识TEID；
步骤612：PGW-C+SMF实体发送创建转发隧道响应消息给AMF实体，携带用于数据转发的GTP隧道端点标识TEID；
步骤613：AMF实体向MME实体发送前向重定位响应消息；其中，前 向重定位响应消息中携带GTP隧道端点标识TEID；
步骤614：MME实体利用现有的过程与SGW之间创建转发隧道，即向SGW发送创建转发隧道请求消息，创建转发隧道请求消息中携带GTP隧道端点标识TEID，并接收SGW发送创建转发隧道响应消息；
步骤615：MME实体发送切换指令到NG RAN，可携带用于数据转发的SGW TEID，即MME实体完成后续切换流程；
步骤616：NG RAN发送切换指令到UE。
参见图7所示，本公开实施例还提供了一种数据中转方法，应用于SMF实体，包括以下步骤：
步骤701：接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系。
其中，本公开实施例可适用于5G网络和LTE网络的互操作场景，数据可以从5G系统转发到LTE系统，也可以从LTE系统转发到5G系统。当数据从5G系统转发到LTE系统时，该EPS承载信息与PDU会话信息的映射关系具体可为：需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。而当数据从LTE系统转发到5G系统时，该EPS承载信息与PDU会话信息的映射关系具体可为：需要接收转发数据的PDU会话的ID以及PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。
步骤702：根据EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
其中，当EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系时，步骤702的配置数据转发隧道的过程可为：
选择UPF实体；
为PDU会话分配用于数据转发的核心网隧道标识，并配置UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道；以及
根据需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将PDU会话的QoS流绑定到需要接收转发数据的EPS承载对应 的转发隧道上，使得UPF实体能够根据数据包的QoS流ID，将该数据包转发到正确的EPS承载的转发隧道上。
而当EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的PDU会话的ID以及PDU会话中相关QoS流的ID与EPS承载的ID的映射关系时，步骤702的配置数据转发隧道的过程可为：
选择UPF实体；
为EPS承载分配用于数据转发的隧道端点标识，并配置UPF实体与5G系统的NG RAN之间的PDU会话隧道；以及
根据需要接收转发数据的PDU会话的ID以及PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将EPS承载绑定到需要接收转发数据的PDU会话对应的转发隧道上，使得UPF实体能够将从EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
这样，本公开实施例的数据中转方法，可在准确完成数据转发的基础上，避免转发数据传输的冗余，减少数据转发的时延，提高转发数据传输的效率。
上述实施例对本公开的数据中转方法进行了说明，下面将结合实施例和附图对本公开的数据中转装置进行说明。
参见图8所示，本公开实施例还提供了一种数据中转装置，应用于网络功能实体，包括：
第一获取模块801，用于获取EPS承载信息与PDU会话信息的映射关系；
确定模块802，用于确定用于数据转发的SMF实体；以及
第一发送模块803，用于将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
本公开实施例的数据中转装置，通过获取EPS承载信息与PDU会话信息的映射关系，确定用于数据转发的SMF实体，将EPS承载信息与PDU会话信息的映射关系发送到SMF实体，由SMF实体根据EPS承载信息与PDU会话信息的映射关系配置数据转发隧道，能够避免由PGW-U+UPF实体作为数据转发节点，从而避免转发数据传输的冗余，减少数据转发的时延，提高 转发数据传输的效率。
其中，所述网络功能实体可以为AMF实体，或者PGW-C+SMF实体。
本公开实施例中，当数据从5G系统转发到LTE系统时，所述第一获取模块801具体用于：
获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。
本公开实施例中，所述网络功能实体为AMF实体，参见图9所示，所述装置还包括：
第二获取模块804，用于从MME实体获取需要接收转发数据的EPS承载的ID。
进一步的，参见图9所示，所述装置还包括：
第二发送模块805，用于向所述MME实体提供待选的需要接收转发数据的EPS承载的ID。
进一步的，参见图9所示，所述装置还包括：
第三获取模块806，用于从5G系统的NG RAN获取需要进行数据转发的PDU会话的QoS流ID；
第四获取模块807，用于从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射关系；
第一确定模块808，用于根据所述PDU会话的QoS流ID与EPS承载ID的映射关系，确定所述需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
本公开实施例中，当数据从LTE系统转发到5G系统时，所述第一获取模块801具体用于：
获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。
本公开实施例中，所述网络功能实体为AMF实体，参见图10所示，所述装置还包括：
第五获取模块809，用于从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
进一步的，参见图10所示，所述装置还包括：
第三发送模块810，用于向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID。
进一步的，参见图10所示，所述装置还包括：
第六获取模块811，用于从MME实体获取需要进行数据转发的EPS承载的ID；
第二确定模块812，用于根据所述需要进行数据转发的EPS承载的ID，确定所述待选的需要接收转发数据的PDU会话的QoS流的ID。
本公开实施例中，所述确定模块802具体用于：
基于UE的位置信息，和/或与数据转发相关的PDU会话信息，确定用于数据转发的所述SMF实体；
其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话；
所述PDU会话信息包括以下一项或多项：PDU会话对应的数据网络名称和PDU会话所属的网络切片信息。
本公开实施例中，所述网络功能实体为PGW-C+SMF实体，所述确定模块802具体用于：
接收AMF实体发送的请求消息，并根据所述请求消息，确定用于数据转发的所述SMF实体。
参见图11所示，本公开实施例还提供了一种数据中转装置，应用于SMF实体，包括：
接收模块111，用于接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系；
配置模块112，用于根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
本公开实施例中，当数据从5G系统转发到LTE系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，所述配置模块112包括：
第一选择单元，用于选择UPF实体；
第一配置单元，用于为PDU会话分配用于数据转发的核心网隧道标识，并配置所述UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道；
第一绑定单元，用于根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将所述PDU会话的QoS流绑定到所述需要接收转发数据的EPS承载对应的转发隧道上，使得所述UPF实体能够根据数据包的QoS流ID，将所述数据包转发到正确的EPS承载的转发隧道上。
本公开实施例中，当数据从LTE系统转发到5G系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，所述配置模块112包括：
第二选择单元，用于选择UPF实体；
第二配置单元，用于为EPS承载分配用于数据转发的隧道端点标识，并配置所述UPF实体与5G系统的NG RAN之间的PDU会话隧道；
第二绑定单元，用于根据所述需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将所述EPS承载绑定到所述需要接收转发数据的PDU会话对应的转发隧道上，使得所述UPF实体能够将从所述EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
此外，本公开实施例还提供了一种网络功能实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述处理器执行所述程序时实现以下步骤：
获取EPS承载信息与PDU会话信息的映射关系；
确定用于数据转发的SMF实体；以及
将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系配置数据转发隧道。
本公开实施例还提供了一种SMF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述处理器执行 所述程序时实现以下步骤：
接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系；以及
根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
具体的，参见图12所示，本公开实施例还提供了一种网络功能实体，所网络功能实体包括总线121、收发机122、天线123、总线接口124、处理器125和存储器126。
其中，处理器125，用于读取存储器126中的程序，执行下列过程：
获取EPS承载信息与PDU会话信息的映射关系，确定用于数据转发的SMF实体，控制收发机122将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
收发机122，用于在处理器125的控制下接收和发送数据。
具体的，所述网络功能实体为AMF实体，或者PGW-C+SMF实体。
具体的，当数据从5G系统转发到LTE系统时，处理器125还用于：获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。
具体的，所述网络功能实体为AMF实体，处理器125还用于：控制收发机122从MME实体获取需要接收转发数据的EPS承载的ID。
具体的，处理器125还用于：控制收发机122向所述MME实体提供待选的需要接收转发数据的EPS承载的ID。
具体的，处理器125还用于：控制收发机122从5G系统的NG RAN获取需要进行数据转发的PDU会话的QoS流ID，从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射关系，根据所述PDU会话的QoS流ID与EPS承载ID的映射关系，确定所述需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
具体的，当数据从LTE系统转发到5G系统时，处理器125还用于：获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的 ID与EPS承载的ID的映射关系。
具体的，所述网络功能实体为AMF实体，处理器125还用于：控制收发机122从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
具体的，处理器125还用于：控制收发机122向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID。
具体的，处理器125还用于：控制收发机122从MME实体获取需要进行数据转发的EPS承载的ID，根据所述需要进行数据转发的EPS承载的ID，确定所述待选的需要接收转发数据的PDU会话的QoS流的ID。
具体的，处理器125还用于：基于UE的位置信息，和/或与数据转发相关的PDU会话信息，确定用于数据转发的所述SMF实体；其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话；所述PDU会话信息包括以下一项或多项：PDU会话对应的数据网络名称和PDU会话所属的网络切片信息。
具体的，所述网络功能实体为PGW-C+SMF实体，处理器125还用于：控制收发机122接收AMF实体发送的请求消息，根据所述请求消息，确定用于数据转发的所述SMF实体。
此外，图12所示的网络功能实体也可为SMF实体。当图12所示的网络功能实体也可为SMF实体时，处理器125通过读取存储器126中的程序，可执行下列过程：
控制收发机122接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系，根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
具体的，当数据从5G系统转发到LTE系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。处理器125还用于：选择UPF实体，为PDU会话分配用于数据转发的核心网隧道标识，并配置所述UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道，根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映 射关系，将所述PDU会话的QoS流绑定到所述需要接收转发数据的EPS承载对应的转发隧道上，使得所述UPF实体能够根据数据包的QoS流ID，将所述数据包转发到正确的EPS承载的转发隧道上。
具体的，当数据从LTE系统转发到5G系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。处理器125还用于：选择UPF实体，为EPS承载分配用于数据转发的隧道端点标识，并配置所述UPF实体与5G系统的NG RAN之间的PDU会话隧道，根据所述需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将所述EPS承载绑定到所述需要接收转发数据的PDU会话对应的转发隧道上，使得所述UPF实体能够将从所述EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
在图12中，总线架构(用总线121来代表)，总线121可以包括任意数量的互联的总线和桥，总线121将包括由处理器125代表的一个或多个处理器和存储器126代表的存储器的各种电路链接在一起。总线121还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口124在总线121和收发机122之间提供接口。收发机122可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器125处理的数据通过天线123在无线介质上进行传输，进一步，天线123还接收数据并将数据传送给处理器125。
处理器125负责管理总线121和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器126可以被用于存储处理器125在执行操作时所使用的数据。
可选的，处理器125可以是CPU、ASIC、FPGA或CPLD。
此外，本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现以下步骤：
获取EPS承载信息与PDU会话信息的映射关系；
确定用于数据转发的SMF实体；以及
将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
可选地，所述网络功能实体为AMF实体，或者PGW-C+SMF实体。
可选地，当数据从5G系统转发到LTE系统时，所述程序被处理器执行时还可以实现以下步骤：获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。
可选地，所述网络功能实体为AMF实体，所述程序被处理器执行时还可以实现以下步骤：从MME实体获取需要接收转发数据的EPS承载的ID。
可选地，所述程序被处理器执行时还可以实现以下步骤：向所述MME实体提供待选的需要接收转发数据的EPS承载的ID。
可选地，所述程序被处理器执行时还可以实现以下步骤：从5G系统的NG RAN获取需要进行数据转发的PDU会话的QoS流ID，从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射关系，根据所述PDU会话的QoS流ID与EPS承载ID的映射关系，确定所述需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
可选地，当数据从LTE系统转发到5G系统时，所述程序被处理器执行时还可以实现以下步骤：获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。
可选地，所述网络功能实体为AMF实体，所述程序被处理器执行时还可以实现以下步骤：从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
可选地，所述程序被处理器执行时还可以实现以下步骤：向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID。
可选地，所述程序被处理器执行时还可以实现以下步骤：从MME实体获取需要进行数据转发的EPS承载的ID，根据所述需要进行数据转发的EPS承载的ID，确定所述待选的需要接收转发数据的PDU会话的QoS流的ID。
可选地，所述程序被处理器执行时还可以实现以下步骤：基于UE的位 置信息，和/或与数据转发相关的PDU会话信息，确定用于数据转发的所述SMF实体；其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话；所述PDU会话信息包括以下一项或多项：PDU会话对应的数据网络名称和PDU会话所属的网络切片信息。
可选地，所述网络功能实体为PGW-C+SMF实体，所述程序被处理器执行时还可以实现以下步骤：接收AMF实体发送的请求消息，根据所述请求消息，确定用于数据转发的所述SMF实体。
此外，本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现以下步骤：
接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系；以及
根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
可选地，当数据从5G系统转发到LTE系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。所述程序被处理器执行时还可以实现以下步骤：选择UPF实体，为PDU会话分配用于数据转发的核心网隧道标识，并配置所述UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道，根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将所述PDU会话的QoS流绑定到所述需要接收转发数据的EPS承载对应的转发隧道上，使得所述UPF实体能够根据数据包的QoS流ID，将所述数据包转发到正确的EPS承载的转发隧道上。
可选地，当数据从LTE系统转发到5G系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。所述程序被处理器执行时还可以实现以下步骤：选择UPF实体，为EPS承载分配用于数据转发的隧道端点标识，并配置所述UPF实体与5G系统的NG RAN之间的PDU会话隧道，根据所述需要接收转发数据的PDU会话的ID以及所述PDU会话中相 关QoS流的ID与EPS承载的ID的映射关系，将所述EPS承载绑定到所述需要接收转发数据的PDU会话对应的转发隧道上，使得所述UPF实体能够将从所述EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体，可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上述本公开实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
以上所述仅是本公开的优选实施方式，应当指出，对于本技术领域的普 通技术人员来说，在不脱离本公开实施例原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本公开实施例的保护范围。

Claims (36)

  1. 一种数据中转方法，应用于网络功能实体，所述数据中转方法包括：
    获取演进的分组系统EPS承载信息与分组数据单元PDU会话信息的映射关系；以及
    将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
  2. 根据权利要求1所述的方法，其中，在所述获取演进的分组系统EPS承载信息与分组数据单元PDU会话信息的映射关系的步骤之后，所述数据中转方法还包括：
    确定用于数据转发的会话管理功能SMF实体。
  3. 根据权利要求1或2所述的方法，其中，所述网络功能实体为核心接入和移动性管理功能AMF实体，或者，同时支持公用数据网网关控制面功能PGW-C和SMF的PGW-C+SMF实体。
  4. 根据权利要求1至3中任一项所述的方法，其中，当数据从第五代移动通信5G系统转发到长期演进LTE系统时，所述获取演进的分组系统EPS承载信息与分组数据单元PDU会话信息的映射关系，包括：
    获取需要接收转发数据的EPS承载的标识ID与PDU会话的服务质量QoS流的ID的映射关系。
  5. 根据权利要求4所述的方法，其中，所述网络功能实体为AMF实体，所述获取需要接收转发数据的EPS承载的标识ID与PDU会话的服务质量QoS流的ID的映射关系之前，所述方法还包括：
    从移动性管理功能MME实体获取需要接收转发数据的EPS承载的ID。
  6. 根据权利要求5所述的方法，其中，所述从移动性管理功能MME实体获取需要接收转发数据的EPS承载的ID之前，所述方法还包括：
    向所述MME实体提供待选的需要接收转发数据的EPS承载的ID。
  7. 根据权利要求6所述的方法，其中，所述向所述MME实体提供待选的需要接收转发数据的EPS承载的ID之前，所述方法还包括：
    从5G系统的下一代无线接入网NG RAN获取需要进行数据转发的PDU会话的QoS流ID；
    从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射关系；以及
    根据所述PDU会话的QoS流ID与EPS承载ID的映射关系，确定所述需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
  8. 根据权利要求1至3中任一项所述的方法，其中，当数据从LTE系统转发到5G系统时，所述获取演进的分组系统EPS承载信息与分组数据单元PDU会话信息的映射关系，包括：
    获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。
  9. 根据权利要求8所述的方法，其中，所述网络功能实体为AMF实体，所述获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系之前，所述方法还包括：
    从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
  10. 根据权利要求9所述的方法，其中，所述从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID之前，所述方法还包括：
    向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID。
  11. 根据权利要求10所述的方法，其中，所述向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID之前，所述方法还包括：
    从MME实体获取需要进行数据转发的EPS承载的ID；以及
    根据所述需要进行数据转发的EPS承载的ID，确定所述待选的需要接收转发数据的PDU会话的QoS流的ID。
  12. 根据权利要求2至11中任一项所述的方法，其中，所述确定用于数据转发的会话管理功能SMF实体，包括：
    基于用户设备UE的位置信息，和/或与数据转发相关的PDU会话信息， 选择用于数据转发的所述SMF实体；
    其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话；
    所述PDU会话信息包括以下一项或多项：PDU会话对应的数据网络名称和PDU会话所属的网络切片信息。
  13. 根据权利要求1至12中任一项所述的方法，其中，所述网络功能实体为PGW-C+SMF实体，所述选择用于数据转发的会话管理功能SMF实体，包括：
    接收AMF实体发送的请求消息；以及
    根据所述请求消息，选择用于数据转发的所述SMF实体。
  14. 一种数据中转方法，应用于SMF实体，所述数据中转方法包括：
    接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系；以及
    根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
  15. 根据权利要求14所述的方法，其中，当数据从5G系统转发到LTE系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，所述根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道，包括：
    选择用户面功能UPF实体；
    为PDU会话分配用于数据转发的核心网隧道标识，并配置所述UPF实体与用于数据转发的服务网关SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道；以及
    根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将所述PDU会话的QoS流绑定到所述需要接收转发数据的EPS承载对应的转发隧道上，使得所述UPF实体能够根据数据包的QoS流ID，将所述数据包转发到正确的EPS承载的转发隧道上。
  16. 根据权利要求14所述的方法，其中，当数据从LTE系统转发到5G系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数 据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，所述根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道，包括：
    选择UPF实体；
    为EPS承载分配用于数据转发的隧道端点标识，并配置所述UPF实体与5G系统的NG RAN之间的PDU会话隧道；以及
    根据所述需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将所述EPS承载绑定到所述需要接收转发数据的PDU会话对应的转发隧道上，使得所述UPF实体能够将从所述EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
  17. 一种数据中转装置，应用于网络功能实体，所述数据中转装置包括：
    第一获取模块，用于获取EPS承载信息与PDU会话信息的映射关系；以及
    第一发送模块，用于将所述EPS承载信息与PDU会话信息的映射关系发送到所述SMF实体，由所述SMF实体根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
  18. 根据权利要求17所述的装置，其中，所述数据中转装置还包括：
    确定模块，用于确定用于数据转发的SMF实体；以及
  19. 根据权利要求17或18所述的装置，其中，所述网络功能实体为AMF实体，或者PGW-C+SMF实体。
  20. 根据权利要求17至19中任一项所述的装置，其中，当数据从5G系统转发到LTE系统时，所述第一获取模块具体用于：
    获取需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系。
  21. 根据权利要求20所述的装置，其中，所述网络功能实体为AMF实体，所述装置还包括：
    第二获取模块，用于从MME实体获取需要接收转发数据的EPS承载的ID。
  22. 根据权利要求21所述的装置，其中，所述装置还包括：
    第二发送模块，用于向所述MME实体提供待选的需要接收转发数据的EPS承载的ID。
  23. 根据权利要求22所述的装置，其中，所述装置还包括：
    第三获取模块，用于从5G系统的NG RAN获取需要进行数据转发的PDU会话的QoS流ID；
    第四获取模块，用于从PGW-C+SMF实体获取PDU会话的QoS流ID与EPS承载ID的映射关系；以及
    第一确定模块，用于根据所述PDU会话的QoS流ID与EPS承载ID的映射关系，确定所述需要进行数据转发的PDU会话的QoS流ID对应的待选的需要接收转发数据的EPS承载的ID。
  24. 根据权利要求17至19中任一项所述的装置，其中，当数据从LTE系统转发到5G系统时，所述第一获取模块具体用于：
    获取需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系。
  25. 根据权利要求24所述的装置，其中，所述网络功能实体为AMF实体，所述装置还包括：
    第五获取模块，用于从5G系统的NG RAN获取需要接收转发数据的PDU会话的QoS流的ID。
  26. 根据权利要求25所述的装置，其中，所述装置还包括：
    第三发送模块，用于向所述NG RAN提供待选的需要接收转发数据的PDU会话的QoS流的ID。
  27. 根据权利要求26所述的装置，其中，所述装置还包括：
    第六获取模块，用于从MME实体获取需要进行数据转发的EPS承载的ID；以及
    第二确定模块，用于根据所述需要进行数据转发的EPS承载的ID，确定所述待选的需要接收转发数据的PDU会话的QoS流的ID。
  28. 根据权利要求18至27中任一项所述的装置，其中，所述确定模块具体用于：
    基于UE的位置信息，和/或与数据转发相关的PDU会话信息，选择用于数据转发的所述SMF实体；
    其中，与数据转发相关的PDU会话为需要进行数据转发的PDU会话，或者需要进行数据转发的EPS承载对应的PDU会话；
    所述PDU会话信息包括以下一项或多项：PDU会话对应的数据网络名称和PDU会话所属的网络切片信息。
  29. 根据权利要求17至28中任一项所述的装置，其中，所述网络功能实体为PGW-C+SMF实体，所述确定模块具体用于：
    接收AMF实体发送的请求消息，并根据所述请求消息，选择用于数据转发的所述SMF实体。
  30. 一种数据中转装置，应用于SMF实体，所述数据中转装置包括：
    接收模块，用于接收AMF实体或者PGW-C+SMF实体发送的EPS承载信息与PDU会话信息的映射关系；以及
    配置模块，用于根据所述EPS承载信息与PDU会话信息的映射关系，配置数据转发隧道。
  31. 根据权利要求30所述的装置，其中，当数据从5G系统转发到LTE系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，所述配置模块包括：
    第一选择单元，用于选择UPF实体；
    第一配置单元，用于为PDU会话分配用于数据转发的核心网隧道标识，并配置所述UPF实体与用于数据转发的SGW之间的转发隧道和与5G系统的NG RAN之间的PDU会话隧道；以及
    第一绑定单元，用于根据所述需要接收转发数据的EPS承载的ID与PDU会话的QoS流的ID的映射关系，将所述PDU会话的QoS流绑定到所述需要接收转发数据的EPS承载对应的转发隧道上，使得所述UPF实体能够根据数据包的QoS流ID，将所述数据包转发到正确的EPS承载的转发隧道上。
  32. 根据权利要求30所述的装置，其中，当数据从LTE系统转发到5G系统时，所述EPS承载信息与PDU会话信息的映射关系为需要接收转发数 据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，所述配置模块包括：
    第二选择单元，用于选择UPF实体；
    第二配置单元，用于为EPS承载分配用于数据转发的隧道端点标识，并配置所述UPF实体与5G系统的NG RAN之间的PDU会话隧道；以及
    第二绑定单元，用于根据所述需要接收转发数据的PDU会话的ID以及所述PDU会话中相关QoS流的ID与EPS承载的ID的映射关系，将所述EPS承载绑定到所述需要接收转发数据的PDU会话对应的转发隧道上，使得所述UPF实体能够将从所述EPS承载的隧道接收到的数据包标记上正确的QoS流ID，并转发到正确的PDU会话的转发隧道上。
  33. 一种网络功能实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述程序时实现根据权利要求1至13中任一项所述的数据中转方法中的步骤。
  34. 一种SMF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述程序时实现根据权利要求14至16中任一项所述的数据中转方法中的步骤。
  35. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现根据权利要求1至13中任一项所述的数据中转方法中的步骤。
  36. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现根据权利要求14至16中任一项所述的数据中转方法中的步骤。
PCT/CN2018/087636 2017-06-15 2018-05-21 一种数据中转方法、装置、网络功能实体及smf实体 WO2018228137A1 (zh)

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EP21191270.4A EP3934324B1 (en) 2017-06-15 2018-05-21 Data forwarding method performed by smf and smf device
KR1020207001216A KR102287142B1 (ko) 2017-06-15 2018-05-21 데이터 포워딩 방법, 장치, 네트워크 기능 엔티티 및 smf 엔티티
US16/618,322 US10973063B2 (en) 2017-06-15 2018-05-21 Data forwarding method and device, network function entity, and session management function entity
JP2019569441A JP6945658B2 (ja) 2017-06-15 2018-05-21 データ中継方法、装置、ネットワーク機能エンティティおよびｓｍｆエンティティ
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020153773A1 (en) * 2019-01-22 2020-07-30 Samsung Electronics Co., Ltd. Device and method for providing network slice interworking in wireless communication system
GB2581218A (en) * 2019-02-08 2020-08-12 Metaswitch Networks Ltd Improvements to core network functions
CN113330817A (zh) * 2019-01-22 2021-08-31 三星电子株式会社 在无线通信系统中提供网络切片互通的设备和方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109392043B (zh) * 2017-08-11 2023-04-14 北京三星通信技术研究有限公司 支持切换的方法及相应设备
CN116367250A (zh) 2017-08-11 2023-06-30 北京三星通信技术研究有限公司 支持切换的方法及相应设备
KR102329925B1 (ko) * 2017-08-14 2021-11-23 삼성전자 주식회사 4g/5g 동시 등록된 이동 통신 단말을 위한 네트워크 이동시 데이터 동기화 제공 방안
CN113784333B (zh) * 2017-10-16 2022-05-24 华为技术有限公司 一种移动性管理的方法、装置及系统
CN110120988B (zh) * 2018-02-07 2021-03-30 华为技术有限公司 地址管理方法、设备及系统
CN113630827B (zh) * 2018-04-04 2023-12-29 北京三星通信技术研究有限公司 支持切换的方法及对应的基站和网络节点
CN110635929A (zh) * 2018-06-21 2019-12-31 中兴通讯股份有限公司 一种数据流的配置方法、装置、系统、设备及计算机介质
US11153925B2 (en) * 2019-01-14 2021-10-19 Mediatek Inc. Handling of QoS flow description without valid EPS bearer context

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102771155A (zh) * 2010-01-29 2012-11-07 阿尔卡特朗讯公司 用于跟踪移动会话的方法和装置
CN102771095A (zh) * 2010-01-29 2012-11-07 阿尔卡特朗讯公司 用于管理移动资源使用的方法和装置
WO2016208991A1 (ko) * 2015-06-26 2016-12-29 삼성전자 주식회사 무선 셀룰라 통신 시스템에서 감소된 전송시간구간을 이용한 송수신 방법 및 장치
CN106851856A (zh) * 2016-12-23 2017-06-13 电信科学技术研究院 一种基于移动中继的无线通信建立方法及网络设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103118401B (zh) 2009-06-19 2015-09-30 华为技术有限公司 业务承载映射方法及通信设备
CN113905423B (zh) 2017-01-06 2024-04-05 北京三星通信技术研究有限公司 无线接入网切换方法、基站和基站的通信方法
CN110651499B (zh) * 2017-05-02 2022-07-12 株式会社Ntt都科摩 用户装置、无线通信系统以及无线通信方法
CN111465062A (zh) * 2017-05-08 2020-07-28 华为技术有限公司 一种通信系统间移动方法及装置
EP3622681B1 (en) * 2017-05-09 2023-08-16 Telefonaktiebolaget LM Ericsson (publ) Method and node for handling qos information

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102771155A (zh) * 2010-01-29 2012-11-07 阿尔卡特朗讯公司 用于跟踪移动会话的方法和装置
CN102771095A (zh) * 2010-01-29 2012-11-07 阿尔卡特朗讯公司 用于管理移动资源使用的方法和装置
WO2016208991A1 (ko) * 2015-06-26 2016-12-29 삼성전자 주식회사 무선 셀룰라 통신 시스템에서 감소된 전송시간구간을 이용한 송수신 방법 및 장치
CN106851856A (zh) * 2016-12-23 2017-06-13 电信科学技术研究院 一种基于移动中继的无线通信建立方法及网络设备

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020153773A1 (en) * 2019-01-22 2020-07-30 Samsung Electronics Co., Ltd. Device and method for providing network slice interworking in wireless communication system
CN113330817A (zh) * 2019-01-22 2021-08-31 三星电子株式会社 在无线通信系统中提供网络切片互通的设备和方法
US11122416B2 (en) 2019-01-22 2021-09-14 Samsung Electronics Co., Ltd. Device and method for providing network slice interworking in wireless communication system
US11751043B2 (en) 2019-01-22 2023-09-05 Samsung Electronics Co., Ltd. Device and method for providing network slice interworking in wireless communication system
GB2581218A (en) * 2019-02-08 2020-08-12 Metaswitch Networks Ltd Improvements to core network functions
GB2581289A (en) * 2019-02-08 2020-08-12 Metaswitch Networks Ltd Improvements to core network functions
GB2581218B (en) * 2019-02-08 2021-02-24 Metaswitch Networks Ltd Improvements to core network functions
GB2581289B (en) * 2019-02-08 2021-02-24 Metaswitch Networks Ltd Improvements to core network functions
US11129212B2 (en) 2019-02-08 2021-09-21 Metaswitch Networks, Ltd. Core network functions
US11206698B2 (en) 2019-02-08 2021-12-21 Metaswitch Networks Ltd. Core network functions

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