WO2017166148A1

WO2017166148A1 - Data transmission method and related device

Info

Publication number: WO2017166148A1
Application number: PCT/CN2016/077947
Authority: WO
Inventors: 李业兴; 王岩; 陈中平
Original assignee: 华为技术有限公司
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-10-05

Abstract

Disclosed is a data transmission method, comprising: a base station receives, from a user equipment, an uplink data packet carrying a radio bearer identifier; the base station searches, according to a mapping relationship, a network slice identifier associated with the radio bearer identifier, and encapsulates the network slice identifier into the uplink data packet; the base station sends the encapsulated uplink data packet to a mobile gateway, such that the mobile gateway receives the encapsulated uplink data packet, obtains the network slice identifier carried in the encapsulated data packet, and sends the encapsulated data packet to the network slice indicated by the network slice identifier. Correspondingly, also disclosed are a mobile gateway and a base station. By implementing the present invention, the isolation of a network slice can be ensured to facilitate management.

Description

Data transmission method and related equipment

Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a data transmission method and related device.

Background technique

The network architecture separated from the control plane and the user plane is an improvement of the existing EPC (Evolved Packet Core, EPC) network, decoupling the user plane and the control plane, and the control plane controls the user plane through the interface. The behavior is specifically: integrating the control logic in the SGW (Serving Gateway, Service Gateway, SGW) and the PGW (Packet Data Network Gateway, PGW) in the existing EPC network to form a control plane network element. The CGW (Controller Gateway, CGW for short) is used to fuse the functions of the user plane to form the user plane network element DGW. In the network architecture where the control plane and the user plane are separated, different network slices share the hardware resources and software resources of the DGW (Data Center Gateway, Mobile Gateway, DGW for short). Therefore, it is necessary to provide a network slice identification method to ensure the user plane. The operations between the various network slices of the DGW are isolated from each other.

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a data transmission method and related device, which can solve the problem that the isolation between slices cannot be realized when the slice sharing user plane is used in the prior art.

In order to solve the above technical problem, a first aspect of the embodiments of the present invention provides a data transmission method, including:

The base station receives the uplink data packet that is sent by the user equipment and carries the radio bearer identifier; the base station queries the network slice identifier associated with the radio bearer identifier according to the mapping relationship, and encapsulates the network slice identifier in the uplink data packet; the base station encapsulates the uplink data packet. Sending to the mobile gateway, so that the mobile gateway receives the encapsulated uplink data packet, obtains the network slice identifier carried in the encapsulated data packet, and the mobile gateway queries the forwarding rule information managed by the network slice identifier, and performs corresponding processing according to the forwarding rule information. action.

In a possible implementation manner, before the base station receives the uplink data packet carrying the radio bearer identifier, Also includes:

The base station obtains the network slice identifier from the control plane network element, and establishes a mapping relationship between the network slice identifier and the radio bearer identifier. The network slice identifier is sent to the control plane network element when the network slice management entity creates a new slice, and the control plane network element is a mobility management entity. MME or control plane gateway CGW.

In a possible implementation manner, the sending, by the base station, the encapsulated uplink data packet to the mobile gateway includes:

The base station establishes a forwarding tunnel with the mobile gateway; the base station sends the encapsulated uplink data packet to the mobile gateway through the forwarding tunnel.

In a possible implementation manner, the network slice identifier is encapsulated in the uplink data packet in the third possible implementation manner, including:

Encapsulating the network slice identifier in an extension bit or a custom field of a GTP header of the uplink packet; or

Encapsulating the network slice identifier in an extension or custom field of the Internet Protocol IP header of the upstream packet; or

The network slice identifier is encapsulated in an extension or custom field of the Media Access Control MAC header of the upstream packet.

A second aspect of the embodiments of the present invention provides a data transmission method, including:

The mobile gateway receives the uplink data packet sent by the base station; the mobile gateway parses the network slice identifier and the network address information carried in the uplink data packet, where the network address information includes a subset of the IP quintuple or the IP quintuple; and the mobile gateway performs the network slice according to the network. The identifier performs the corresponding processing action, and saves the mapping relationship between the network slice identifier and the network address information. The IP quintuple is the source IP address, the source port, the destination IP address, the destination port, the transport layer protocol, and the subset of the IP quintuple. Includes at least one element in the IP quintuple.

In a possible implementation manner, the method further includes:

The mobile gateway receives the downlink data packet; the mobile gateway parses the network address information carried in the downlink data packet, and queries the network slice identifier associated with the network address information according to the mapping relationship, where the network address information includes a subset of the IP quintuple or the IP quintuple. A subset of the group; the mobile gateway encapsulates the associated network slice identifier in a downlink data packet and transmits a downlink data packet to the base station.

In a possible implementation manner, the performing, by the mobile gateway, the corresponding processing action according to the network slice identifier includes: the mobile gateway querying, by the mobile gateway, the forwarding rule information associated with the original matching field, the root Performing a corresponding processing action according to the forwarding rule information; or the mobile gateway queries the network slice corresponding to the network slice identifier, queries the forwarding rule information of the data packet according to the original matching field carried in the uplink data packet, and performs corresponding processing according to the forwarding rule information. action.

In a possible implementation manner, before the mobile gateway receives the uplink data packet sent by the base station, the method further includes: the mobile gateway receives the network slice establishment request that carries the network slice identifier; the mobile gateway establishes the network slice according to the network slice establishment request, and saves the network. The sliced network slice identifier; or

The mobile gateway receives the forwarding rule information carrying the network slice identifier and the original matching field, and saves the forwarding rule information.

A third aspect of the embodiments of the present invention provides a base station, including: a receiving module, a packaging module, and a processing module, where the receiving module receives and receives an uplink data packet carrying a radio bearer identifier, and the encapsulating module queries the network slice associated with the radio bearer identifier according to the mapping relationship. The identifier and the network slice identifier are encapsulated in the uplink data packet, and the processing module sends the encapsulated uplink data packet to the mobile gateway, where the network slice identifier is used to instruct the mobile gateway to perform a corresponding processing action.

In a possible implementation, the mapping module acquires the network slice identifier of the network slice corresponding to the user equipment, and obtains the radio bearer identifier of the EPS bearer that is pre-established by the user equipment. The network slice identifier is mapped to the radio bearer identifier and then stored.

In a possible implementation manner, the processing module establishes a forwarding tunnel, and sends the encapsulated uplink data packet to the mobile gateway by using a forwarding tunnel.

In a possible implementation, the encapsulating module is configured to encapsulate the network slice identifier in an extension bit or a custom field of a GTP header of the uplink data packet; or encapsulate the network slice identifier in an internetwork of an uplink data packet. In the extension bit or custom field of the protocol IP header; or encapsulate the network slice identifier in the extension or custom field of the Media Access Control MAC header of the upstream packet.

A fourth aspect of the embodiments of the present invention provides a mobile gateway, including: an uplink receiving module, a first parsing module, and a processing module, where the uplink receiving module receives an uplink data packet sent by the base station; and the first parsing module parses the uplink data packet to be carried. Network slice identifier and network address information, the network address information includes a subset of the IP quintuple or the IP quintuple subset; the processing module is configured to perform a corresponding processing action according to the network slice identifier, and save the network slice identifier Mapping relationship with network address information.

With reference to the fourth aspect, in a first possible implementation manner, the mobile gateway further includes: a downlink receiving module, a second parsing module, and a sending module; and the downlink receiving module receives the downlink data packet;

The second parsing module parses the network address information carried in the downlink data packet according to the mapping relationship. Querying a network slice identifier associated with the network address information; the sending module encapsulates the associated network slice identifier in the downlink data packet, and sends the downlink data packet to the base station.

With reference to the fourth aspect or the first possible implementation manner, in a second possible implementation, the processing module queries the forwarding rule information associated with the original matching field in the network slice identifier, and performs a corresponding processing action according to the forwarding rule information; Or querying the network slice corresponding to the network slice identifier, querying the forwarding rule information of the network slice according to the original matching field carried in the uplink data packet, performing corresponding processing actions according to the forwarding rule information, and saving the network slice identifier and the network address information. Mapping relations.

In a possible implementation manner, the mobile gateway further includes: a saving module

The saving module receives the network slice establishment request carrying the network slice identifier, establishes a network slice according to the network slice establishment request, and saves the network slice identifier of the network slice; or receives the forwarding rule information carrying the network slice identifier and the original matching field, and saves and forwards Rule information.

A fifth aspect of the embodiments of the present invention provides a base station, including: one or more processors, a memory, a bus system, a transceiver, and one or more programs, where the processor, the memory, and the transceiver are connected by a bus system;

One or more programs are stored in the memory, and the one or more programs include instructions that, when executed by the device, cause the device to perform any of the second possible implementations of the first aspect to the first aspect The method of the item.

A sixth aspect of the embodiments of the present invention provides a computer readable storage medium storing one or more programs, including one or more programs including instructions that, when executed by the device, cause the device to perform as in the first aspect to the first A method of any of the second possible implementations of the aspect.

A seventh aspect of the present invention provides a mobile gateway, including: one or more processors, a memory, a bus system, a transceiver, and one or more programs, where the processor, the memory, and the transceiver are connected by a bus system;

One or more programs are stored in the memory, and the one or more programs include instructions that, when executed by the device, cause the device to perform any of the third possible implementations of the second aspect to the second aspect The method of the item.

An eighth aspect of the embodiments of the present invention provides a computer readable storage medium storing one or more programs, including one or more programs including instructions that, when executed by the device, cause the device to execute The method of any of the second aspect to the third possible implementation of the second aspect.

The implementation of the present invention has the following beneficial effects:

The uplink data packet sent by the user equipment carries the radio bearer identifier, and the base station queries the network slice identifier associated with the radio bearer identifier according to the mapping relationship, and encapsulates the network slice identifier into the uplink data packet to forward to the mobile gateway, so that the mobile gateway of the network user plane can be Different network slice identifiers send data packets to corresponding network slices, which realizes that the slice identifiers of different network slices are completely independent and easy to manage.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.

FIG. 2 is a schematic flowchart diagram of a method for data transmission according to a first embodiment of the present invention;

3 is a schematic flowchart of a method for data transmission according to a second embodiment of the present invention;

4 is a schematic flowchart of a method for data transmission according to a third embodiment of the present invention;

FIG. 5 is a schematic flowchart of a method for data transmission according to a fourth embodiment of the present invention; FIG.

FIG. 6 is a schematic flowchart diagram of a method for data transmission according to a fifth embodiment of the present invention; FIG.

FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 8 is another schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a mobile gateway according to an embodiment of the present disclosure;

FIG. 10 is another schematic structural diagram of a mobile gateway according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a schematic structural diagram of a communication system according to an embodiment of the present invention. In an embodiment, the communication system includes: a user equipment, a base station, a DGW (Data Center Gateway, Mobile Gateway, DGW for short), a Control Gateway CGW (Controller Gateway, Control Plane Gateway, CGW for short), and a mobility management entity MME (Mobility Management). The communication system of the embodiment of the present invention is a separate architecture between the control plane and the user plane. Multiple network slices can be established in the mobile gateway, and the network slice represents pre-customized software resources and hardware in the mobile gateway. Resources, serving user equipment, different network slices have different transmission performance parameters, and transmission performance parameters include: coverage area, duration, capacity, speed, delay, reliability, security, and availability. A variety of network segments are logically independent of each other. Each network slice in the mobile gateway corresponds to a control gateway and a mobility management entity. The network slice can be newly created or released as needed.

In another possible implementation manner, the mobile gateway does not need to create a network slice, and when matching the forwarding rule information sent by the control plane, it needs to match a network slice identifier field, according to the network slice identifier and the original matching field. The processing action is performed, and the corresponding processing action is performed on the data packet of the user plane. The original matching field may be a TEID (Tunnel Endpoint Identity, TE Endpoint Identity, TEID), a source IP address, a source port, a destination IP address, and a destination port. One or more of a transport layer protocol, a source medium access control MAC address, and a destination MAC address.

When the network slice management entity needs to create a new network slice, obtain the required transmission performance parameters in the current transmission scenario, and assign a unique network slice identifier to the network slice to be established, and the network slice management entity sends the bearer transmission performance to the mobile gateway. The network slice establishment request of the parameter and the network slice identifier, the mobile gateway receives the establishment request sent by the network slice management entity, parses the network slice establishment request to obtain the transmission performance parameter and the network slice identifier, and the mobile gateway invokes the hardware resource and the software resource according to the transmission performance parameter. Establishing a network slice and assigning the network slice identifier to the established network slice. After successfully establishing the network slice, the mobile gateway returns a network slice setup response to the network slice management entity, and the network slice management entity learns the network slice according to the network slice establishment response. After the establishment is successful, the corresponding control gateway and the mobility management entity are specified for the established network slice, and the network slice identifier of the network slice is notified to the corresponding control gateway and the mobility management entity. The control gateway sends the forwarding rule information message to the DGW to carry the network slice identifier, and the DGW receives the forwarding rule information message carrying the network slice identifier, and finds the corresponding network slice according to the network slice identifier carried in the forwarding rule information message, and sends the forwarding rule information message. The corresponding network slice is processed. User equipment The base station sends an uplink data packet, and the user equipment establishes an EPS (Evolved Packet System, Evolved Packet System, EPS) bearer with the network slice in the base station and the mobile gateway before transmitting the uplink data packet, and the uplink data packet carries the radio bearer identifier of the EPS bearer. The base station queries the network slice identifier associated with the radio bearer identifier according to the pre-stored mapping relationship, encapsulates the associated network slice identifier into the uplink data packet, and then sends the encapsulated uplink data packet to the mobile gateway, and the mobile gateway receives the encapsulated The uplink data packet is parsed to obtain the network slice identifier carried therein, and the corresponding network slice is found according to the network slice identifier, and the uplink data packet is sent to the corresponding network slice for processing.

The network slice management entity sends a network slice release command carrying the network slice identifier to the mobile gateway, and the mobile gateway releases the network slice corresponding to the network slice identifier, so that the occupied software resources and hardware resources of the network slice can be used for the newly created network slice. At the same time, the network slice identifier of the network slice can also be re-allocated to the newly established network slice, thereby realizing the reuse of the network slice identifier.

As shown in the foregoing embodiment, the uplink data packet sent by the user equipment carries the radio bearer identifier, and the base station queries the network slice identifier associated with the radio bearer identifier according to the mapping relationship, and encapsulates the network slice identifier into the uplink data packet and forwards the packet to the mobile gateway. The mobile gateway of the network user plane can send the data packet to the corresponding network slice according to different network slice identifiers, so that the slice identifiers of different network slices are completely independent and easy to manage.

FIG. 2 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention. In the embodiment of the present invention, the method includes:

S201. The base station receives an uplink data packet that carries the radio bearer identifier.

Specifically, the user equipment is pre-attached to the mobile gateway to establish an EPS bearer with the mobile gateway. When the user equipment needs to perform uplink data transmission, the user equipment sends an uplink data packet carrying the radio bearer identifier to the base station, and the base station receives the uplink data packet sent by the user equipment. .

S202. The base station queries, according to the mapping relationship, a network slice identifier associated with the radio bearer identifier, and encapsulates the network slice identifier in the uplink data packet.

Specifically, after the user equipment establishes the EPS bearer, the base station acquires the radio bearer identifier of the EPS bearer of the user equipment, and the network slice identifier of the network slice corresponding to the user equipment, and associates the radio bearer identifier with the network slice identifier, and then stores the . The base station receives the uplink data packet, parses the radio bearer identifier carried in the base station, and queries the radio bearer identifier according to the pre-stored mapping relationship. The network slice identifier is encapsulated in the uplink data packet, so that the encapsulated uplink data carries the network slice identifier.

S203. The base station sends the encapsulated uplink data packet to the mobile gateway, where the network slice identifier is used to instruct the mobile gateway to perform a corresponding action.

Specifically, the base station sends the encapsulated uplink data packet to the data center network, the mobile gateway receives the uplink data packet, parses the network slice identifier carried in the uplink data packet, and the mobile gateway queries the forwarding rule information associated with the network slice identifier, according to the The forwarding rule information performs a corresponding processing action on the uplink data packet, or the mobile gateway finds a corresponding network slice according to the network slice identifier, and sends the uplink data packet to the corresponding network slice for processing.

Optionally, before receiving, by the user equipment, the uplink data packet that carries the radio bearer identifier sent by the user equipment, the method further includes:

Obtaining, by the base station, a network slice identifier of a network slice corresponding to the user equipment from a control plane network element;

Obtaining, by the base station, a radio bearer identifier of an EPS bearer that is pre-established by the user equipment;

The base station establishes a mapping relationship between the network slice identifier and the radio bearer identifier, where the network slice identifier is sent to the control plane network element when the network slice management entity newly creates a slice, and the control plane network element is a mobile Management entity MME or control plane gateway CGW.

Specifically, before the user equipment sends the uplink data packet to the mobile gateway, the network needs to establish an EPS bearer for the user equipment, where the EPS bearer includes two segments: a radio bearer between the user equipment and the base station, and a radio bearer between the base station and the mobile gateway. The base station acquires the network slice identifier of the network slice corresponding to the user equipment and the radio bearer identifier of the ESP radio bearer, and then saves the network slice identifier and the radio bearer identifier.

Optionally, the sending, by the base station, the encapsulated uplink data packet to the mobile gateway includes:

Establishing a forwarding tunnel between the base station and the mobile gateway;

Sending, by the base station, the encapsulated uplink data packet to the mobile gateway by using the forwarding tunnel.

Optionally, the encapsulating the network slice identifier in the uplink data packet includes:

Encapsulating the network slice identifier in an extension bit or a custom field of a GTP header of a general packet radio service tunneling protocol of the uplink data packet; or

Encapsulating the network slice identifier in an extension bit of an internet protocol IP header of the uplink data packet or In a custom field; or

Encapsulating the network slice identifier in an extension bit or a custom field of a medium access control MAC header of the uplink data packet.

FIG. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present invention. In the embodiment of the present invention, the method includes:

S301. The mobile gateway receives an uplink data packet sent by the base station.

S302. The mobile gateway parses the network slice identifier and network address information carried in the uplink data packet.

S303. The mobile gateway performs a corresponding processing action according to the network slice identifier, and saves a mapping relationship between the network slice identifier and the network address information.

Specifically, the mobile gateway receives the uplink data packet that is sent by the base station and carries the network slice identifier, and the mobile gateway obtains the network in a specified location in the uplink data packet, for example, GTP (GPRS Tunnelling Protocol, GTP) header analysis. The slice identifier is used to uniquely represent the identity of the pre-established network slice in the data center network, and the mobile gateway parses the network slice identifier and network address information carried in the uplink data packet, where the network address information includes the IP quintuple or IP. A subset of the quintuple, the IP quintuple includes a source IP address, a source port, a destination IP address, a destination port, and a transport layer protocol, and the mobile gateway performs a corresponding processing action according to the forwarding rule information associated with the network slice identifier, and the uplink is performed. The network slice identifier and network address information carried in the data packet are bound to the mapping relationship.

Optionally, the method further includes:

The mobile gateway receives a downlink data packet;

The mobile gateway parses the network address information carried in the downlink data packet, and queries the network slice identifier associated with the network address information according to a preset mapping relationship;

The mobile gateway encapsulates the associated network slice identifier in the downlink data packet and sends the downlink data packet to the base station.

Optionally, the performing, by the mobile gateway, the corresponding processing action according to the network slice identifier includes:

The mobile gateway queries the forwarding rule information associated with the original matching field in the network slice identifier, and performs a corresponding processing action according to the forwarding rule information; or

The mobile gateway queries the network slice corresponding to the network slice identifier, queries the forwarding rule information of the network slice according to the original matching field carried in the uplink data packet, and performs a corresponding processing action according to the forwarding rule information. .

Optionally, before the mobile gateway receives the uplink data packet sent by the base station, the mobile gateway further includes:

Receiving, by the mobile gateway, a network slice setup request carrying the network slice identifier, the mobile gateway establishing the network slice according to the network slice establishment request, and saving the network slice identifier of the network slice; or

The mobile gateway receives the forwarding rule information that carries the network slice identifier and the original matching field, and saves the forwarding rule information.

It can be seen from the foregoing embodiment that the mobile gateway of the network user plane receives the uplink data packet that is sent by the base station and carries the network slice identifier, and sends the data packet to the corresponding network slice according to different network slice identifiers, so as to implement different network slices. Completely isolated for easy management.

FIG. 4 is a schematic diagram of interaction of a data transmission method according to an embodiment of the present invention. In the embodiment of the present invention, the method includes:

S401. The user equipment sends an initial attach request to the base station.

S402. The base station sends an initial attach request to the pre-selected MME. The base station randomly selects one MME from the plurality of MMEs that belong to the pre-selected MME.

S403. The pre-selected MME sends a user equipment subscription data request to the HSS (Home Subscriber Server, HSS for short) to obtain the context information of the user equipment. The pre-selected MME obtains the context information from the old MME corresponding to the user equipment. The information includes the type of service of the user equipment.

S404. The HSS returns a user equipment subscription data response to the pre-selected MME, where the user equipment subscription data response includes a service type of the user equipment.

S405. The pre-selected MME returns a slice requirement response to the base station, where the slice requirement response includes a service type of the user equipment.

S406. The base station sends an attach request to the final MME.

Specifically, the base station selects a final MME according to the service type of the user equipment.

S407. The final MME sends a new session request to the control gateway. The new session request carries a network slice identifier, and the new session request is used to establish a network slice for the user equipment.

In another possible implementation manner, the mobile gateway does not need to create a network slice, and when matching the forwarding rule information sent by the control plane, it needs to match a network slice identifier field, according to the network slice identifier and the original matching field. The forwarding rule information is obtained, and the corresponding processing action is performed on the data packet of the user plane according to the forwarding rule information. The original matching field may be a field carried in a data packet such as the UE IP or the TEID.

S408. The control gateway sends a new session request carrying the network slice identifier to the mobile gateway, and the mobile gateway receives the new session request, establishes a new network slice, and allocates the network slice identifier in the new session request to the newly created network slice.

S409. The mobile gateway returns a new session response to the control gateway.

Specifically, after the mobile gateway successfully establishes a new network slice, the mobile terminal returns a new session response carrying a message indicating that the establishment is successful.

S411: The final MME sends an initial context setup request to the base station, where the initial context setup request carries the network slice identifier of the network slice corresponding to the user equipment, the TEID and the IP address of the mobile gateway.

S412: The eNB sends an RRC (Radio Resource Control) connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message includes a radio bearer identifier, where the RRC connection reconfiguration message is used to indicate that the user equipment establishes an ESP radio bearer, and the The radio bearer identity is assigned to the established EPS bearer. The base station binds the radio bearer identifier to the network slice identifier of the network slice corresponding to the user equipment, and then stores the data.

S413. The user equipment returns an RCC connection reconfiguration complete message to the base station.

S414. The base station sends an initial context response message to the final MME, where the context response message carries the TEID and the base station address of the base station.

S415. The user equipment sends a direct transmission message to the base station, where the direct transmission message includes the attachment completion. Message.

S416. The user equipment sends an uplink data packet to the base station, where the uplink data packet carries the radio bearer identifier of the EPS bearer corresponding to the user equipment.

S417: The base station receives the uplink data packet, parses the radio bearer identifier carried in the uplink data packet, and queries the network slice identifier associated with the radio bearer identifier according to the pre-stored mapping relationship, and encapsulates the associated network slice identifier into the uplink data packet.

S418. The base station sends an uplink data packet to the mobile gateway, where the uplink data packet carries a network slice identifier.

Specifically, the base station acquires the network identifier of the mobile gateway, establishes a forwarding tunnel according to the network identifier, and sends the uplink data packet to the mobile gateway by using the forwarding tunnel.

S419. The mobile gateway sends the uplink data packet to the network slice corresponding to the network slice identifier.

As shown in the foregoing embodiment, the uplink data packet sent by the user equipment carries the radio bearer identifier, and the base station queries the network slice identifier associated with the radio bearer identifier according to the mapping relationship, and encapsulates the network slice identifier into the uplink data packet and forwards the packet to the mobile gateway. The mobile gateway of the network user plane can send the data packet to the corresponding network slice according to different network slice identifiers, thereby achieving complete isolation between different network slices.

FIG. 5 is a schematic diagram of interaction of a handover procedure according to an embodiment of the present invention. In the embodiment of the present invention, the method includes:

S501. The target base station sends a path switch request to the MME.

S502. The MME sends a bearer modification request to the control gateway. Carrying the TEID and IP address of the target base station in the bearer modification request

S503. The control gateway sends a bearer modification request to the mobile gateway.

S504. The mobile gateway returns a bearer modification response to the control gateway. The bearer modification response carries the IP address and TEID of the mobile gateway.

S505. The control gateway returns a bearer modification response to the MME.

S506. The control gateway sends an end tag to the source base station.

S507. The source base station sends an end marker to the target base station.

S508. The MME returns a path switch response to the target base station. The path switch response carries the network slice identifier of the network slice corresponding to the user equipment.

S509. The target base station sends a resource release indication to the source base station.

It can be seen from the above embodiment that when the location information of the user equipment is changed, the serving base station of the user equipment will be handed over to the target base station by the source base station. In the handover process, the MME sends the network slice identifier of the network slice corresponding to the user equipment to the target. The base station, the target base station establishes a mapping relationship between the network slice identifier and the radio bearer identifier, so that when the target base station receives the uplink data packet sent by the user equipment, the target base station queries the corresponding network slice identifier according to the radio bearer identifier in the uplink data packet, and the query is performed. The obtained network slice identifier is encapsulated into an uplink data packet and then forwarded to the mobile gateway, thereby realizing complete isolation of the network slice in the mobile gateway.

FIG. 6 is a schematic diagram of interaction of a data transmission method according to an embodiment of the present invention. In the embodiment of the present invention, the method includes:

S601. The source base station sends a service request to the target base station.

S602. The target base station sends a service request to the MME.

S603. The MME returns an initial context setup request to the target base station.

S604. The target base station sends a radio bearer setup request to the source base station.

S605. The user equipment sends an uplink data packet to the base station.

S606. The base station encapsulates the network slice identifier into an uplink data packet.

S607. The base station sends an uplink data packet to the mobile gateway.

S608. The mobile gateway sends the uplink data packet to a network slice corresponding to the network slice identifier.

S609. The base station returns an initial context establishment completion to the MME.

S610. The MME sends a bearer modification request to the control gateway.

S611. The control gateway sends a bearer modification request to the mobile gateway.

S612. The mobile gateway returns a bearer modification response to the control gateway.

S613. The control gateway returns a bearer modification response to the MME.

As shown in the foregoing embodiment, the uplink data packet sent by the user equipment carries the radio bearer identifier, and the base station queries the network slice identifier associated with the radio bearer identifier according to the mapping relationship, and encapsulates the network slice identifier into the uplink data packet and forwards the packet to the mobile gateway. The mobile gateway of the network user plane can send the data packet to the corresponding network slice according to different network slice identifiers, ensuring isolation between different network slices, and facilitating management of data packets of the network slice.

FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention. The terminal used in the embodiment of the present invention is used to perform a data transmission method in FIG. 2, and the terminology and process involved may refer to FIG. 2 description of. The base station 7 includes a receiving module 701, a packaging module 702, and a processing module 703.

The receiving module 701 is configured to receive and receive an uplink data packet that carries the radio bearer identifier.

The encapsulating module 702 is configured to query, according to the mapping relationship, a network slice identifier associated with the radio bearer identifier, and encapsulate the network slice identifier in the uplink data packet;

The processing module 703 is configured to send the encapsulated uplink data packet to the mobile gateway, where the network slice identifier is used to instruct the mobile gateway to perform a corresponding action.

Optionally, the base station 7 further includes:

a mapping module, configured to acquire, from a control plane network element, a network slice identifier of a network slice corresponding to the user equipment; acquire a radio bearer identifier of an EPS bearer pre-established by the user equipment; and use the network slice identifier and the radio bearer The identifier is stored, and the network slice identifier is sent to the control plane network element when the network slice management entity creates a new slice, and the control plane network element is a mobility management entity MME or a control plane gateway CGW.

Optionally, the processing module 703 is configured to:

Establish a forwarding tunnel with the mobile gateway;

And transmitting, by the forwarding tunnel, the encapsulated uplink data packet to the mobile gateway.

Optionally, the encapsulation module 702 is configured to:

Encapsulating the network slice identifier in an extension bit or a custom field of an internet protocol IP header of the uplink data packet; or

The embodiment of the present invention and the method embodiment of FIG. 2 are based on the same concept, and the technical effects thereof are also the same. For the specific process, reference may be made to the description of the method embodiment 1, and details are not described herein again.

FIG. 8 is still another schematic structural diagram of a base station according to an embodiment of the present invention. In an embodiment, base station 8 includes a processor 801, a memory 802, and a transceiver 803. The transceiver 803 is configured to transmit and receive data with and from an external device. The number of processors 801 in the base station 8 may be one or more. In some embodiments of the invention, processor 801, memory 802, and transceiver 803 may be coupled by a bus system or other means. Base station 8 can be used to perform the method illustrated in FIG. For the meaning and examples of the terms involved in the embodiment, reference may be made to the corresponding embodiment of FIG. 2. I will not repeat them here.

The program code is stored in the memory 802. The processor 801 is configured to call program code stored in the memory 802 for performing the following operations:

Receiving an uplink data packet carrying a radio bearer identifier;

Querying, according to the mapping relationship, a network slice identifier associated with the radio bearer identifier, and encapsulating the network slice identifier in the uplink data packet;

And sending the encapsulated uplink data packet to the mobile gateway, where the network slice identifier is used to instruct the mobile gateway to perform a corresponding action.

In some embodiments of the present invention, before the receiving, by the processor 801, the uplink data packet that carries the radio bearer identifier sent by the user equipment, the processor 801 is further configured to:

And acquiring, by the control plane network element, a network slice identifier of the network slice corresponding to the user equipment, where the network slice identifier is sent to the control plane network element when the network slice management entity newly creates a slice, and the control plane network element For the mobility management entity MME or the control plane gateway CGW;

Obtaining a radio bearer identifier of the EPS bearer pre-established by the user equipment;

The network slice identifier is mapped to the radio bearer identifier and stored.

In some embodiments of the present invention, the performing, by the processor 801, the sending the encapsulated uplink data packet to the mobile gateway includes:

Establish a forwarding tunnel with the mobile gateway;

In some embodiments of the present invention, the performing, by the processor, the encapsulating the network slice identifier in the uplink data packet includes:

Encapsulating the network slice identifier in an extension bit or a custom field of a GTP header of the uplink data packet.

FIG. 9 is a schematic structural diagram of a mobile gateway according to an embodiment of the present invention. The mobile gateway of the embodiment is used to perform a method of data transmission in FIG. 3. The terms and processes involved may be described with reference to the embodiment of FIG. 3. The mobile gateway 9 includes an uplink interface module 901, a first parsing module 902, and a processing module 903.

The uplink receiving module 901 is configured to receive an uplink data packet sent by the base station.

The first parsing module 902 is configured to parse the network slice identifier and network address information carried in the uplink data packet.

The processing module 903 is configured to perform a corresponding processing action according to the network slice identifier, and save a mapping relationship between the network slice identifier and the network address information.

Optionally, the mobile gateway 9 further includes:

a downlink receiving module, configured to receive a downlink data packet;

a second parsing module, configured to parse the network address information carried in the downlink data packet, and query the network slice identifier associated with the network address information according to a preset mapping relationship;

And a sending module, configured to encapsulate the associated network slice identifier in the downlink data packet, and send the downlink data packet to the base station.

Optionally, the processing module 903 is configured to:

Querying, by the network slice identifier, the forwarding rule information associated with the original matching field, and performing corresponding processing actions according to the forwarding rule information; or

Querying the network slice corresponding to the network slice identifier, querying the forwarding rule information of the network slice according to the original matching field carried in the uplink data packet, and performing a corresponding processing action according to the forwarding rule information; The original matching field includes one or more of a tunnel endpoint identifier TEID, a source IP address, a source port, a destination IP address, a destination port, a transport layer protocol, a source medium access control MAC address, and a destination MAC address.

Optionally, the mobile gateway 9 further includes:

a saving module, configured to receive a network slice establishment request that carries the network slice identifier, establish the network slice according to the network slice establishment request, and save the network slice identifier of the network slice; or

And receiving the forwarding rule information that carries the network slice identifier and the original matching field, and saves the forwarding rule information.

The embodiment of the present invention and the method embodiment of FIG. 3 are based on the same concept, and the technical effects thereof are also the same. For the specific process, reference may be made to the description of the second embodiment of the method, and details are not described herein again.

FIG. 10 is a schematic diagram of another structure of a mobile gateway according to an embodiment of the present invention. In the embodiment of the present invention, the mobile gateway 10 includes a processor 1001, a memory 1002, and a transceiver 1003. The transceiver 1003 is configured to transmit and receive data with and from an external device. The number of processors 1001 in the mobile gateway 10 may be one or more. In some embodiments of the invention, processor 1001, memory 1002, and transceiver 1003 may be coupled by a bus system or other means. Base station 10 can be used to perform the method illustrated in FIG. For the meaning and examples of the terms involved in the embodiment, reference may be made to the corresponding embodiment of FIG. 2. I will not repeat them here.

The program code is stored in the memory 1002. The processor 1001 is configured to call program code stored in the memory 1002 for performing the following operations:

Receiving an uplink data packet sent by the base station;

Parsing the network slice identifier and network address information carried in the uplink data packet;

Performing corresponding processing actions according to the network slice identifier.

In some embodiments of the present invention, before the processor 1001 performs the receiving the uplink data packet sent by the base station, the processor 1001 is further configured to:

Receiving downlink data packets;

Parsing the network address information carried in the downlink data packet, and querying the network slice identifier associated with the network address information according to a preset mapping relationship;

Encapsulating the associated network slice identifier in the downlink data packet and transmitting the downlink data packet to the base station.

In some embodiments of the present invention, the performing, by the processor 1001, the performing the corresponding processing action according to the network slice identifier includes:

In some embodiments of the present invention, the processor 1001 is further configured to:

Receiving a network slice setup request carrying the network slice identifier;

Establishing the network slice according to the network slice establishment request, and saving the network slice identifier of the network slice; or

One of ordinary skill in the art can understand that all or part of the process of implementing the foregoing embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Claims

A method for data transmission, comprising:

Receiving, by the base station, an uplink data packet carrying a radio bearer identifier;

The base station queries, according to the mapping relationship, a network slice identifier associated with the radio bearer identifier;

The base station encapsulates the network slice identifier in the uplink data packet;

The base station sends the encapsulated uplink data packet to the mobile gateway, where the network slice identifier is used to instruct the mobile gateway to perform a corresponding processing action.
The method according to claim 1, wherein before the receiving, by the base station, the uplink data packet carrying the radio bearer identifier, the method further includes:

And the base station obtains the network slice identifier from the control plane network element, and establishes a mapping relationship between the network slice identifier and the radio bearer identifier, where the network slice identifier is sent to the For the control plane network element, the control plane network element is a mobility management entity MME or a control plane gateway CGW.
The method according to claim 1 or 2, wherein the encapsulating the network slice identifier in the uplink data packet comprises:

Encapsulating the network slice identifier in an extension bit or a custom field of a GTP header of a general packet radio service tunneling protocol of the uplink data packet; or

Encapsulating the network slice identifier in an extension bit or a custom field of an internet protocol IP header of the uplink data packet; or

Encapsulating the network slice identifier in an extension bit or a custom field of a medium access control MAC header of the uplink data packet.
A method for data transmission, comprising:

The mobile gateway receives the uplink data packet sent by the base station;

Determining, by the mobile gateway, a network slice identifier and network address information carried in the uplink data packet, where the network address information includes a subset of an IP quintuple or an IP quintuple;

The mobile gateway performs a corresponding processing action according to the network slice identifier, and saves a mapping relationship between the network slice identifier and the network address information.
The method of claim 4, further comprising:

The mobile gateway receives a downlink data packet;

The mobile gateway parses the network address information carried in the downlink data packet, and queries the network slice identifier associated with the network address information according to the mapping relationship;

The mobile gateway encapsulates the associated network slice identifier in the downlink data packet and sends the downlink data packet to the base station.
The method according to claim 4, wherein the performing, by the mobile gateway, the corresponding processing action according to the network slice identifier comprises:

The mobile gateway queries the forwarding rule information associated with the original matching field carried in the uplink data packet, and performs a corresponding processing action according to the forwarding rule information; or

The mobile gateway queries the network slice corresponding to the network slice identifier, queries the forwarding rule information of the data packet according to the original matching field carried in the uplink data packet, and performs a corresponding processing action according to the forwarding rule information. The original matching field includes one or more of a tunnel endpoint identifier TEID, a source IP address, a source port, a destination IP address, a destination port, a transport layer protocol, a source media access control MAC address, and a destination MAC address. .
The method according to claim 6, wherein before the mobile gateway receives the uplink data packet sent by the base station, the method further includes:

Receiving, by the mobile gateway, a network slice setup request carrying the network slice identifier, establishing the network slice according to the network slice establishment request, and saving the network slice identifier of the network slice; or

The mobile gateway receives the forwarding rule information that carries the network slice identifier and the original matching field, and saves the forwarding rule information.
A base station, comprising:

a receiving module, configured to receive an uplink data packet carrying a radio bearer identifier;

An encapsulating module, configured to query, according to a mapping relationship, a network slice identifier associated with the radio bearer identifier, and encapsulate the network slice identifier in the uplink data packet;

The processing module is configured to send the encapsulated uplink data packet to the mobile gateway, where the network slice identifier is used to instruct the mobile gateway to perform a corresponding processing action.
The base station according to claim 8, further comprising:

a mapping module, configured to acquire the network slice identifier from the control plane network element, and establish a mapping relationship between the network slice identifier and the radio bearer identifier, where the network slice identifier is sent by the network slice management entity The control plane network element of the control plane network element is a mobility management entity MME or a control plane gateway CGW.
The base station according to claim 8 or 9, wherein the encapsulation module is configured to:

Encapsulating the network slice identifier in an extension bit or a custom field of a GTP header of the uplink data packet;

Encapsulating the network slice identifier in an extension bit or a custom field of an internet protocol IP header of the uplink data packet; or

Encapsulating the network slice identifier in an extension bit or a custom field of a medium access control MAC header of the uplink data packet.
A mobile gateway, comprising:

An uplink receiving module, configured to receive an uplink data packet sent by the base station;

a first parsing module, configured to parse the network slice identifier and network address information carried in the uplink data packet;

And a processing module, configured to perform a corresponding processing action according to the network slice identifier, and save a mapping relationship between the network slice identifier and the network address information.
The mobile gateway of claim 11, further comprising:

a downlink receiving module, configured to receive a downlink data packet;

a second parsing module, configured to parse the network address information carried in the downlink data packet, and Querying, according to the mapping relationship, a network slice identifier associated with the network address information, where the network address information includes a subset of an IP quintuple or an IP quintuple;

And a sending module, configured to encapsulate the associated network slice identifier in the downlink data packet, and send the downlink data packet to the base station.
The mobile gateway of claim 11, wherein the processing module is configured to:

Querying, by the network slice identifier, forwarding rule information associated with the original matching field carried by the uplink data packet, and performing corresponding processing actions according to the forwarding rule information; or

Querying the network slice corresponding to the network slice identifier, querying the forwarding rule information of the network slice according to the original matching field carried in the uplink data packet, and performing a corresponding processing action according to the forwarding rule information; The original matching field includes one or more of a tunnel endpoint identifier TEID, a source IP address, a source port, a destination IP address, a destination port, a transport layer protocol, a source medium access control MAC address, and a destination MAC address.
The mobile gateway of claim 13, further comprising:

a saving module, configured to receive a network slice setup request that carries the network slice identifier, establish the network slice according to the network slice establishment request, and save the network slice identifier of the network slice; or

And receiving the forwarding rule information that carries the network slice identifier and the original matching field, and saves the forwarding rule information.
A base station, comprising: one or more processors, a memory, a bus system, a transceiver, and one or more programs, wherein the processor, the memory, and the transceiver are connected by a bus system;

One or more of the programs are stored in a memory, and the one or more programs include instructions that, when executed by the device, cause the device to perform the method of any one of claims 1 to 3.
A computer readable storage medium storing one or more programs, characterized in that one or more programs comprise instructions that, when executed by the device, cause the device to perform any of claims 1 to 3. Methods.
A mobile gateway, comprising: one or more processors, a memory, a bus system, a transceiver, and one or more programs, wherein the processor, the memory, and the transceiver are connected by a bus system;

One or more of the programs are stored in a memory, and the one or more programs include instructions that, when executed by the device, cause the device to perform the method of any one of claims 4 to 7.
A computer readable storage medium storing one or more programs, characterized in that one or more programs include instructions that, when executed by the device, cause the device to perform any of claims 4 to 7. Methods.