CN111246453A - Data transmission method, user plane network element and control plane network element - Google Patents
Data transmission method, user plane network element and control plane network element Download PDFInfo
- Publication number
- CN111246453A CN111246453A CN201811440292.5A CN201811440292A CN111246453A CN 111246453 A CN111246453 A CN 111246453A CN 201811440292 A CN201811440292 A CN 201811440292A CN 111246453 A CN111246453 A CN 111246453A
- Authority
- CN
- China
- Prior art keywords
- network element
- plane network
- ipv6 address
- address prefix
- message
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the application discloses a data transmission method, a user plane network element and a control plane network element, which can effectively reduce the processing time delay of an automatic address allocation process and reduce the interactive data volume between the user plane network element and the control plane network element. The method in the embodiment of the application comprises the following steps: the user plane network element receives IPv6 address prefix information which is sent by the control plane network element and corresponds to User Equipment (UE); if the user plane network element receives a target request message sent by the UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, wherein the target request message comprises a routing Request (RS) message, and the target response message comprises a Routing Announcement (RA) message.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a data transmission method, a user plane network element, and a control plane network element.
Background
The 5G network architecture readjusts the network architecture of the next generation core network device, and usually, a serving interface (NG-CP) is used by a 5G core network control plane (NG-CP) to provide related functions to the outside. The Session Management Function (SMF) of the NG-CP performs message interaction with the User Plane Function (UPF) through an N4 or Sx interface, thereby implementing user policy delivery from the Control Plane (CP) to the User Plane (UP) and event reporting from the UP to the CP.
In the current Internet protocol version 6 (IPv 6) address automatic allocation process, a User Equipment (UE) sends a Neighbor Solicitation (NS) message and a Routing Solicitation (RS) message to an UPF, the UPF encapsulates the NS message and the RS message and forwards the NS message and the RS message to an SMF, the SMF replies a UPF Neighbor Advertisement (NA) message and a Routing Advertisement (RA) message, the UPF tunnels the NA message and the RA message and forwards the NA message and the RA message to the UE, and the UE obtains an IPv6 address from the RA message.
However, in the prior art, in order to implement the IPv6 address automatic allocation function, the SMF needs to respond to the NS message and the RS message sent by the UE, and then the SMF forwards the NA message and the RA message to the UE through the UPF, which results in higher processing delay in the entire IPv6 address automatic allocation process.
Disclosure of Invention
The embodiment of the application provides a data transmission method, a user plane network element and a control plane network element, which can effectively reduce the processing time delay of an automatic address allocation process.
In view of this, a first aspect of the embodiments of the present application provides a data transmission method, including:
the user plane network element receives IPv6 address prefix information which is sent by the control plane network element and corresponds to User Equipment (UE);
if the user plane network element receives a target request message sent by the UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, wherein the target request message comprises a routing Request (RS) message, and the target response message comprises a Routing Announcement (RA) message.
Through the above manner, the user plane network element can receive the IPv6 address prefix information corresponding to the UE and issued by the control plane network element, and therefore, if the user plane network element receives the RS message sent by the UE, the user plane network element does not need to forward the RS message to the control plane network element and receive the RA message sent by the control plane network element, and can directly generate the RA message carrying the IPv6 address prefix information by the user plane network element and send the RA message to the UE, so as to implement the address automatic allocation function, and can effectively reduce the processing delay of the address automatic allocation process.
Alternatively, in one possible implementation,
the step of receiving, by the user plane network element, IPv6 address prefix information corresponding to the user equipment UE, sent by the control plane network element includes:
and the user plane network element receives a session establishment request sent by the control plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
In this embodiment, a specific implementation manner is provided in which the user plane network element sends the IPv6 address prefix information to the UE, so that the practicability of the scheme is improved.
Alternatively, in one possible implementation,
the step of receiving, by the user plane network element, IPv6 address prefix information corresponding to the user equipment UE, sent by the control plane network element includes:
and the user plane network element receives a session modification request sent by the control plane network element, wherein the session modification request comprises the IPv6 address prefix information.
In this embodiment, another specific implementation manner is provided for the user plane network element to send the IPv6 address prefix information to the UE, so that the flexibility of the scheme is improved.
Alternatively, in one possible implementation,
the IPv6 address prefix information includes an IPv6 address prefix length corresponding to the UE.
In this embodiment, a specific form of IPv6 address prefix information is listed, so that the implementability of the scheme is improved.
Alternatively, in one possible implementation,
the target request message further includes a neighbor solicitation, NS, message and the target response message further includes a neighbor advertisement, NA, message.
In this embodiment, the user plane network element may further receive an NS message sent by the UE, and reply an NA message to the UE, thereby improving the extensibility of the scheme.
Alternatively, in one possible implementation,
the user plane network element comprises a UPF, and the control plane network element comprises an SMF.
A second aspect of the embodiments of the present application provides a data transmission method, including:
the control plane network element generates IPv6 address prefix information corresponding to the UE;
the control plane network element sends the IPv6 address prefix information to a user plane network element, so that if the user plane network element receives a target request message sent by a UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message.
Alternatively, in one possible implementation,
the sending, by the control plane network element, the IPv6 address prefix information to the user plane network element includes:
and the control plane network element sends a session establishment request to the user plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
Alternatively, in one possible implementation,
the sending, by the control plane network element, the IPv6 address prefix information to the user plane network element includes:
and the control plane network element sends a session modification request to the user plane network element, wherein the session modification request comprises the IPv6 address prefix information.
Alternatively, in one possible implementation,
the IPv6 address prefix information includes an IPv6 address prefix length corresponding to the UE.
Alternatively, in one possible implementation,
the user plane network element comprises a UPF, and the control plane network element comprises an SMF.
A third aspect of the embodiments of the present application provides a user plane network element, including:
a receiving unit, configured to receive IPv6 address prefix information corresponding to the UE and sent by a control plane network element;
a generating unit, configured to generate a target response message carrying the IPv6 address prefix information if the receiving unit receives a target request message sent by the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message;
a sending unit, configured to send the target response message to the UE.
Alternatively, in one possible implementation,
the receiving unit is specifically configured to:
and receiving a session establishment request sent by the control plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
Alternatively, in one possible implementation,
the receiving unit is specifically configured to:
and receiving a session modification request sent by the control plane network element, wherein the session modification request comprises the IPv6 address prefix information.
Alternatively, in one possible implementation,
the IPv6 address prefix information includes an IPv6 address prefix length corresponding to the UE.
Alternatively, in one possible implementation,
the target request message further includes a neighbor solicitation, NS, message and the target response message further includes a neighbor advertisement, NA, message.
Alternatively, in one possible implementation,
the user plane network element comprises a UPF, and the control plane network element comprises an SMF.
A fourth aspect of the present embodiment provides a control plane network element, including:
a generating unit, configured to generate IPv6 address prefix information corresponding to the UE;
a sending unit, configured to send the IPv6 address prefix information to a user plane network element, so that if the user plane network element receives a target request message sent by a UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message.
Alternatively, in one possible implementation,
the sending unit is specifically configured to:
and sending a session establishment request to the user plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
Alternatively, in one possible implementation,
the sending unit is specifically configured to:
and sending a session modification request to the user plane network element, wherein the session modification request comprises the IPv6 address prefix information.
Alternatively, in one possible implementation,
the IPv6 address prefix information includes an IPv6 address prefix length corresponding to the UE.
Alternatively, in one possible implementation,
the user plane network element comprises a UPF, and the control plane network element comprises an SMF.
A fifth aspect of the present application provides a user plane network element, including:
the system comprises a processor, a memory, a bus and an input/output interface;
the memory has program code stored therein;
when the processor calls the program codes in the memory, the following operations are executed:
receiving IPv6 address prefix information which is sent by a control plane network element and corresponds to User Equipment (UE);
if a target request message sent by the UE is received, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, wherein the target request message comprises a routing Request (RS) message, and the target response message comprises a Routing Advertisement (RA) message.
A sixth aspect of the present embodiment provides a control plane network element, including:
the system comprises a processor, a memory, a bus and an input/output interface;
the memory has program code stored therein;
when the processor calls the program codes in the memory, the following operations are executed:
generating IPv6 address prefix information corresponding to the UE;
sending the IPv6 address prefix information to a user plane network element, so that if the user plane network element receives a target request message sent by UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, wherein the target request message comprises a routing Request (RS) message, and the target response message comprises a Routing Announcement (RA) message.
A seventh aspect of the embodiments of the present application provides a computer-readable storage medium, including instructions, which when executed on a computer, cause the computer to perform a flow of a data transmission method as in the first or second aspect of the embodiments of the present application.
An eighth aspect of the embodiments of the present application provides a computer program product, which when run on a computer, causes the computer to execute the flow of the data transmission method in the first aspect or the second aspect of the embodiments of the present application.
According to the technical scheme, the embodiment of the application has the following advantages:
in the embodiment of the application, a user plane network element receives IPv6 address prefix information corresponding to a UE sent by a control plane network element, and then, if the user plane network element receives a target request message sent by the UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, where the target request message includes an RS message and the target response message includes an RA message. Through the above manner, the user plane network element can receive the IPv6 address prefix information corresponding to the UE and issued by the control plane network element, and therefore, if the user plane network element receives the RS message sent by the UE, the user plane network element does not need to forward the RS message to the control plane network element and receive the RA message sent by the control plane network element, and can directly generate the RA message carrying the IPv6 address prefix information by the user plane network element and send the RA message to the UE, so as to implement the address automatic allocation function, and can effectively reduce the processing delay of the address automatic allocation process.
Drawings
FIG. 1 is a schematic flow chart illustrating an implementation of an address automatic allocation function in the prior art;
fig. 2 is a schematic diagram of an embodiment of a data transmission method in an embodiment of the present application;
fig. 3 is a schematic diagram of another embodiment of a data transmission method in the embodiment of the present application;
fig. 4 is a schematic diagram of an embodiment of a user plane network element in an embodiment of the present application;
fig. 5 is a schematic diagram of an embodiment of a control plane network element in the embodiment of the present application;
fig. 6 is a schematic structural diagram of a user plane network element in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a control plane network element in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a data transmission method, a user plane network element and a control plane network element, which can effectively reduce the processing time delay of an automatic address allocation process.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In 5G network slicing, a network slicing technology is to slice a physical network into a plurality of virtual end-to-end networks, and devices, access technologies, transmission paths, and core networks in the networks are logically independent between each virtual network. Each network slice is formed by instantiating an independent network function or a function combination, has different functional characteristics and is oriented to different requirements and services. The separation of the network slices enables different users and user groups to flexibly and dynamically define and customize network capabilities according to different application scenes and requirements of the users and the user groups without influencing each other.
One network slice includes a Control Plane Function (CPF) and a User Plane Function (UPF). The CPF mainly completes access control of terminal equipment, such as access authentication, security encryption, location registration, and the like, and establishment of a user plane transmission path, where the CPF may specifically include a Session Management Function (SMF) and is mainly responsible for all control plane functions of UE session management, including UPF selection, IP address allocation, and the like, and the UPF mainly completes functions of routing forwarding of user plane data, and the like.
Referring to fig. 1, in the current automatic address allocation process of Internet protocol version 6 (IPv 6), the SMF may generate a Packet Detection Rule (PDR), including a PDR instructing the UPF to forward Neighbor Solicitation (NS) messages and routing Requests (RSs) to the SMF, and instructing the UPF to receive a Neighbor Advertisement (NA) message and a Routing Advertisement (RA) message issued by the SMF and forward the messages to the PDR of the UE, then the SMF issues the PDR to the UPF, when the UPF receives the data packet sent by the UE, the UPF analyzes the data packet, if the data packet comprises the NS message and the RS message, the UPF encapsulates and forwards the NS message and the RS message to the SMF, then the SMF processes the NS message and the RS message and sends the NA message and the RA message to the UPF, and then the UPF encapsulates and forwards the NA message and the RA message to the UE.
It can be understood that the UE needs to implement the address automatic allocation function by adding the obtained address prefix and its own interface ID, and then can communicate with other devices in the network, but since the SMF is responsible for the address management function of the UE, only the SMF knows the address prefix available to a certain UE, in order to implement the address automatic allocation function, the SMF needs to respond to the NS message and the RS message sent by the UE, and then the SMF forwards the NA message and the RA message to the UE through the UPF, the interaction between the UPF and the SMF causes a higher processing delay of the entire IPv6 address automatic allocation flow, and in addition, the UPF installs the PDR associated with the address automatic allocation function and issued by the SMF, so that the memory resource occupancy of the UPF is higher.
Therefore, the embodiments of the present application provide a data transmission method, a data plane network element, and a control plane network element, which can effectively reduce the processing delay of the automatic address allocation process.
It should be noted that, in a 5G network, the user plane network element may be a UPF, the control plane network element may be an SMF, and if it is extended to a 4.5G network, the user plane network element may be a PDN gateway user plane (PGW-U), and the control plane network element may be a PDN gateway control plane (PGW-C). Specifically, in the embodiment of the present application, a user plane network element is taken as an UPF and a control plane network element is taken as an SMF for example to describe
Referring to fig. 2, fig. 2 is a schematic diagram illustrating an embodiment of a data transmission method according to an embodiment of the present application.
201. The SMF determines IPv6 address prefix information corresponding to the UE.
In this embodiment, the SMF may allocate IPv6 address prefix information to each UE supporting the address auto-configuration function, and specifically, the SMF may define IPv6 address prefix information for the UE according to an IP address of the UE, where the IPv6 address prefix information may be an IPv6 address prefix length, or an IPv6 address prefix, and is not limited herein.
For example, if the length of the IPv6 address prefix is 56, it indicates that the first 56 bits in the IPv6 address of the UE are the IPv6 address prefix of the UE. That is to say, to determine the IPv6 address prefix corresponding to the UE, it is necessary to know the IPv6 address and the IPv6 address prefix length, and then it can be determined how many first bits in the IPv6 address are the IPv6 address prefix according to the IPv6 address prefix length.
202. The SMF sends a session establishment request carrying IPv6 address prefix information to the UPF.
In this embodiment, the SMF may add IPv6 address prefix information corresponding to the UE to the session establishment request, and send the session establishment request to the UPF. It can be understood that the SMF may add the determined IPv6 address prefix to the session establishment request and send the session establishment request to the UPF, and the SMF may also add the IPv6 address prefix length to the session establishment request and send the session establishment request to the UPF, and the IPv6 address may be issued by the SMF through the PDR, so that the UPF may determine the IPv6 address prefix according to the IPv6 address and the IPv6 address prefix length.
It should be noted that the session establishment request may specifically be a session establishment request based on a Packet Forwarding Control Protocol (PFCP). The information elements specifically included in the session establishment request may be as shown in table 1 below, and as can be seen from table 1, the session establishment request may include a node identifier, a session identifier, an IPv6 address prefix length, and an effective range of each information element. The node identifier may specifically be an identifier of an SMF or an identifier of another possible CPF, the session identifier is a full session identifier of a control plane, and uniquely identifies the session information, the node identifier and the session identifier may both be valid in three types of interfaces, namely, Sxa, Sxb, and N4, while the IPv6 address prefix length may be valid in two types of interfaces, namely, Sxb and N4, where Sxa is an interface of a serving gateway control plane (SGW-C) and a serving gateway user plane (SGW-U), Sxb is an interface of a public data network (public data network, PDN) gateway control plane (PDN gateway-control, PGW-C) and a PDN gateway user plane (PDN gateway-user, PGW-U), and N4 is an interface between the SMF and the UPF.
TABLE 1
203. The UPF establishes a session and stores IPv6 address prefix information.
After receiving the session establishment request sent by the SMF, the UPF initiates a session establishment procedure, extracts and stores IPv6 address prefix information carried in the session establishment request, and after the session is successfully established, the UPF can start the detection functions of the NS message and the RS message. It should be noted that, the specific process of session establishment may refer to a process of establishing a Protocol Data Unit (PDU) session in the prior art, which is not described herein again specifically.
204. The UPF sends a session establishment success response to the SMF.
In this embodiment, after the UPF completes the session establishment, a response to successful session establishment is sent to the SMF.
205. And the UPF receives the NS message and the RS message sent by the UE.
In this embodiment, if the UPF receives a data packet from the UE, the UPF may detect the data packet, and further analyze the NS message and the RS message sent by the UE. The NS message is used for determining the link layer address of the neighbor, judging whether the link layer address in the cache can be reached or not and judging whether a repeated IP address exists in the link or not; the RS message is used to initiate a multicast packet of a router solicitation when a node does not want to wait until the next periodic router advertisement, and the initializing node can use the router solicitation, so that the routing related parameters can be obtained.
206. The UPF generates a NA message and an RA message carrying IPv6 address prefix information.
In this embodiment, after detecting the NS message and the RS message from the data packet sent by the UE, the UPF may generate an NA message and an RA message, where the RA message carries IPv6 address prefix information.
207. And the UPF sends the NA message and the RA message carrying the IPv6 address prefix information to the UE.
In this embodiment, the UPF may send the NA message and the RA message carrying the IPv6 address prefix information to the UE, so that the UE may implement the function of address automatic allocation according to the IPv6 address prefix information.
Through the above manner, the UPF can receive the IPv6 address prefix information corresponding to the UE and sent by the SMF, so that if the UPF receives the RS message sent by the UE, the UPF does not need to forward the RS message to the SMF and receive the RA message sent by the SMF, and can directly generate the RA message carrying the IPv6 address prefix information by the UPF and send the RA message to the UE, so as to implement an address automatic allocation function, and can effectively reduce the processing delay of an address automatic allocation process. In addition, the UPF does not need to install PDRs (packet data managers) which are issued by the SMF and related to the address automatic allocation function, and the memory resource occupancy rate of the UPF is reduced.
The above describes the way in which the SMF sends address prefix information to the UPF via a session establishment request, and in addition, the SMF can also send address prefix information to the UPF via a session modification request message.
Referring to fig. 3, fig. 3 is a schematic diagram of another embodiment of a data transmission method according to an embodiment of the present application.
301. The SMF determines IPv6 address prefix information corresponding to the UE.
In this embodiment, step 301 is similar to the description of step 201 in the embodiment shown in fig. 2, and details thereof are not repeated here.
302. The SMF sends a session modification request carrying IPv6 address prefix information to the UPF.
In this embodiment, the SMF may add IPv6 address prefix information corresponding to the UE to the session modification request, and send the session modification request to the UPF. It can be understood that the SMF may add the determined IPv6 address prefix to the session modification request and send the session modification request to the UPF, and the SMF may also add the IPv6 address prefix length to the session modification request and send the session modification request to the UPF, and the IPv6 address may be issued by the SMF through the PDR, so that the UPF may determine the IPv6 address prefix according to the IPv6 address and the IPv6 address prefix length.
It should be noted that the session modification request may specifically be a session modification request based on a Packet Forwarding Control Protocol (PFCP). The information elements specifically included in the session modification request may be as shown in table 2 below, and as can be seen from table 2, the session modification request may include a session identifier, an IPv6 address prefix length, and an effective range of each information element. The session identifier is a full session identifier of the control plane, uniquely identifies the session information, and can be validated in three types of interfaces, namely, Sxa, Sxb, and N4, and the IPv6 address prefix length can be validated in two types, namely, Sxb and N4, wherein Sxa is an interface between a serving gateway control plane (SGW-C) and a serving gateway user plane (SGW-U), Sxb is an interface between a Public Data Network (PDN) gateway control plane (PDN gateway-control, PGW-C) and a PDN gateway user plane (pdnway-user, PGW-U), and N4 is an interface between an SMF and a UPF.
TABLE 2
303. The UPF modifies the session and stores IPv6 address prefix information.
After receiving the session modification request sent by the SMF, the UPF initiates a session modification process, extracts and stores IPv6 address prefix information carried in the session modification request, and after the session modification is successful, the UPF can start the detection functions of the NS message and the RS message. It should be noted that, the specific process of session modification may refer to a modification process of a Protocol Data Unit (PDU) session in the prior art, and details are not described herein.
304. The UPF sends a session modification success response to the SMF.
In this embodiment, after the UPF completes the session modification, a session modification success response is also sent to the SMF.
305. And the UPF receives the NS message and the RS message sent by the UE.
306. The UPF generates a NA message and an RA message carrying IPv6 address prefix information.
307. And the UPF sends the NA message and the RA message carrying the IPv6 address prefix information to the UE.
In this embodiment, steps 305-307 are similar to the description of steps 205-207 in the embodiment shown in fig. 2, and detailed description thereof is omitted here.
It should be noted that, besides the above-mentioned session establishment request and session modification request, other sessions that can implement the IPv6 address prefix length carried between the UPF and the CPF all belong to the coverage of this patent. In addition to the network element forms of the UPF and the SMF mentioned in this embodiment, the method may also be extended to map the UPF to the network elements such as the SGW-U or the PGW-U and map the SMF to the network elements such as the SGW-C or the PGW-C in a 3G or 4G CU separation scenario, which is not limited herein.
The data transmission method in the embodiment of the present application is described above, and the UPF and the CPF in the embodiment of the present application are described below:
referring to fig. 4, an embodiment of a user plane network element in the embodiment of the present application includes:
the receiving unit 401 is configured to receive IPv6 address prefix information corresponding to the UE and sent by the control plane network element;
a generating unit 402, configured to generate a target response message carrying the IPv6IPv6 address prefix information if the receiving unit receives a target request message sent by the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message;
a sending unit 403, configured to send the target response message to the UE.
Optionally, the receiving unit 401 is specifically configured to:
and receiving a session establishment request sent by the control plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
Optionally, the receiving unit 401 is specifically configured to:
and receiving a session modification request sent by the control plane network element, wherein the session modification request comprises the IPv6 address prefix information.
Optionally, the IPv6 address prefix information includes an IPv6 address prefix length corresponding to the UE.
Optionally, the target request message further includes a neighbor solicitation NS message, and the target response message further includes a neighbor advertisement NA message.
Optionally, the user plane network element includes a UPF, and the control plane network element includes an SMF.
In this embodiment, the receiving unit 401 receives IPv6 address prefix information corresponding to the UE sent by the control plane network element, and then if the user plane network element receives a target request message sent by the UE, the generating unit 402 generates a target response message carrying the IPv6 address prefix information, and the sending unit 403 sends the target response message to the UE, where the target request message includes an RS message and the target response message includes an RA message. Through the above manner, the user plane network element can receive the IPv6 address prefix information corresponding to the UE and issued by the control plane network element, and therefore, if the user plane network element receives the RS message sent by the UE, the user plane network element does not need to forward the RS message to the control plane network element and receive the RA message sent by the control plane network element, and can directly generate the RA message carrying the IPv6 address prefix information by the user plane network element and send the RA message to the UE, so as to implement the address automatic allocation function, and can effectively reduce the processing delay of the address automatic allocation process.
Referring to fig. 5, an embodiment of a control plane network element in the embodiment of the present application includes:
a generating unit 501, configured to generate IPv6 address prefix information corresponding to the UE;
the sending unit 502 is configured to send the IPv6 address prefix information to a user plane network element, so that if the user plane network element receives a target request message sent by a UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message.
Optionally, the sending unit 502 is specifically configured to:
and sending a session establishment request to the user plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
Optionally, the sending unit 502 is specifically configured to:
and sending a session modification request to the user plane network element, wherein the session modification request comprises the IPv6 address prefix information.
Optionally, the IPv6 address prefix information includes an IPv6 address prefix length corresponding to the UE.
Optionally, the user plane network element includes a UPF, and the control plane network element includes an SMF.
The user plane network element and the control plane network element in the embodiment of the present application are described above from the perspective of the modular functional entity, and the user plane network element and the control plane network element in the embodiment of the present application are described below from the perspective of hardware processing:
referring to fig. 6, an embodiment of a user plane network element in the present application may include one or more central processing units 601, a memory 602, an input/output interface 603, a wired or wireless network interface 604, and a power supply 605.
The memory 602 may be transient or persistent storage. Still further, the central processor 601 may be configured to communicate with the memory 602 to perform a series of instruction operations in the memory 602 on the user plane functional entity.
In this embodiment, the central processing unit 601 may perform the operations performed by the user plane network element in the embodiments shown in fig. 2 and fig. 3, which are not described herein again.
In this embodiment, the specific functional module division in the central processing unit 601 may be similar to the functional module division of the receiving unit, the generating unit, and the sending unit described in fig. 4, and is not described herein again.
Referring to fig. 7, an embodiment of a control plane network element in the present application may include one or more central processing units 701, a memory 702, an input/output interface 703, a wired or wireless network interface 704, and a power source 705.
The memory 702 may be transient storage or persistent storage. Still further, the central processor 701 may be configured to communicate with the memory 702 to perform a series of instruction operations in the memory 702 on the user plane functional entity.
In this embodiment, the central processing unit 701 may execute the operations executed by the control plane network element in the embodiments shown in fig. 2 and fig. 3, which are not described herein again in detail.
In this embodiment, the specific functional module division in the central processing unit 701 may be similar to the functional module division manner of the generating unit and the sending unit described in fig. 5, and is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various other media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (26)
1. A method of data transmission, comprising:
a user plane network element receives address prefix information which is sent by a control plane network element and corresponds to User Equipment (UE);
if the user plane network element receives a target request message sent by the UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, wherein the target request message comprises a routing Request (RS) message, and the target response message comprises a Routing Announcement (RA) message.
2. The method of claim 1, wherein the receiving, by the user plane network element, the IPv6 address prefix information corresponding to the user equipment UE sent by the control plane network element comprises:
and the user plane network element receives a session establishment request sent by the control plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
3. The method of claim 1, wherein the receiving, by the user plane network element, the IPv6 address prefix information corresponding to the user equipment UE, sent by the control plane functional entity control plane network element comprises:
and the user plane network element receives a session modification request sent by the control plane network element, wherein the session modification request comprises the IPv6 address prefix information.
4. The method of any of claims 1-3, wherein the IPv6 address prefix information includes an IPv6 address prefix length corresponding to the UE.
5. The method according to any of claims 1 to 3, wherein the target request message further comprises a Neighbor Solicitation (NS) message and the target response message further comprises a Neighbor Advertisement (NA) message.
6. The method according to any of claims 1 to 3, wherein the user plane network element comprises a user plane function entity (UPF) and the control plane network element comprises a session management function entity (SMF).
7. A method of data transmission, comprising:
the control plane network element generates IPv6 address prefix information corresponding to the UE;
the control plane network element sends the IPv6 address prefix information to a user plane network element, so that if the user plane network element receives a target request message sent by a UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message.
8. The method of claim 7, wherein the sending, by the control plane network element, the IPv6 address prefix information to the user plane network element comprises:
and the control plane network element sends a session establishment request to the user plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
9. The method of claim 7, wherein the sending, by the control plane network element, the IPv6 address prefix information to the user plane network element comprises:
and the control plane network element sends a session modification request to the user plane network element, wherein the session modification request comprises the IPv6 address prefix information.
10. The method of any of claims 7-9, wherein the IPv6 address prefix information comprises an IPv6 address prefix length corresponding to the UE.
11. The method according to any of claims 7 to 9, wherein the user plane network element comprises a UPF and the control plane network element comprises an SMF.
12. A user plane network element, comprising:
a receiving unit, configured to receive IPv6 address prefix information corresponding to the UE and sent by a control plane network element;
a generating unit, configured to generate a target response message carrying the IPv6 address prefix information if the receiving unit receives a target request message sent by the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message;
a sending unit, configured to send the target response message to the UE.
13. The user plane network element of claim 12, wherein the receiving unit is specifically configured to:
and receiving a session establishment request sent by the control plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
14. The user plane network element of claim 12, wherein the receiving unit is specifically configured to:
and receiving a session modification request sent by the control plane network element, wherein the session modification request comprises the IPv6 address prefix information.
15. The user plane network element of any of claims 12 to 14, wherein the IPv6 address prefix information comprises an IPv6 address prefix length corresponding to the UE.
16. The user plane network element of any of claims 12 to 14, wherein the target request message further comprises a neighbor solicitation, NS, message and the target response message further comprises a neighbor advertisement, NA, message.
17. The user plane network element according to any of claims 12 to 14, wherein the user plane network element comprises a UPF and the control plane network element comprises an SMF.
18. A control plane network element, comprising:
a generating unit, configured to generate IPv6 address prefix information corresponding to the UE;
a sending unit, configured to send the IPv6 address prefix information to a user plane network element, so that if the user plane network element receives a target request message sent by a UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, where the target request message includes a routing request RS message, and the target response message includes a routing advertisement RA message.
19. The control plane network element of claim 18, wherein the sending unit is specifically configured to:
and sending a session establishment request to the user plane network element, wherein the session establishment request comprises the IPv6 address prefix information.
20. The control plane network element of claim 18, wherein the sending unit is specifically configured to:
and sending a session modification request to the user plane network element, wherein the session modification request comprises the IPv6 address prefix information.
21. The control plane network element of any of claims 18 to 20, wherein the IPv6 address prefix information comprises an IPv6 address prefix length corresponding to the UE.
22. Control plane network element according to any of claims 18 to 20, wherein the user plane network element comprises a UPF and the control plane network element comprises an SMF.
23. A user plane network element, comprising:
the system comprises a processor, a memory, a bus and an input/output interface;
the memory has program code stored therein;
when the processor calls the program codes in the memory, the following operations are executed:
receiving IPv6 address prefix information which is sent by a control plane network element and corresponds to User Equipment (UE);
if a target request message sent by the UE is received, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, wherein the target request message comprises a routing Request (RS) message, and the target response message comprises a Routing Advertisement (RA) message.
24. A control plane network element, comprising:
the system comprises a processor, a memory, a bus and an input/output interface;
the memory has program code stored therein;
when the processor calls the program codes in the memory, the following operations are executed:
generating IPv6 address prefix information corresponding to the UE;
sending the IPv6 address prefix information to a user plane network element, so that if the user plane network element receives a target request message sent by UE, the user plane network element generates a target response message carrying the IPv6 address prefix information and sends the target response message to the UE, wherein the target request message comprises a routing Request (RS) message, and the target response message comprises a Routing Announcement (RA) message.
25. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 11.
26. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440292.5A CN111246453B (en) | 2018-11-28 | 2018-11-28 | Data transmission method, user plane network element and control plane network element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440292.5A CN111246453B (en) | 2018-11-28 | 2018-11-28 | Data transmission method, user plane network element and control plane network element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111246453A true CN111246453A (en) | 2020-06-05 |
| CN111246453B CN111246453B (en) | 2021-06-15 |
Family
ID=70877462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811440292.5A Active CN111246453B (en) | 2018-11-28 | 2018-11-28 | Data transmission method, user plane network element and control plane network element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111246453B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113453222A (en) * | 2021-06-24 | 2021-09-28 | 中国联合网络通信集团有限公司 | Communication method and device |
| CN114039947A (en) * | 2020-07-21 | 2022-02-11 | 中国电信股份有限公司 | Terminal address allocation method, UPF, system and storage medium |
| CN114189843A (en) * | 2020-09-14 | 2022-03-15 | 中国移动通信有限公司研究院 | Information processing method and device, control plane network element and proxy network element |
| CN114244850A (en) * | 2021-11-18 | 2022-03-25 | 深圳市领创星通科技有限公司 | Data packet processing method and device, computer equipment and storage medium |
| CN114363296A (en) * | 2020-09-30 | 2022-04-15 | 大唐移动通信设备有限公司 | Address conflict detection method, user plane network element and control plane network element |
| CN114785756A (en) * | 2022-06-22 | 2022-07-22 | 新华三技术有限公司 | Information sending method, device and equipment |
| CN114979090A (en) * | 2022-05-27 | 2022-08-30 | 深圳市领创星通科技有限公司 | IPv6 data packet processing method, device, computer equipment and storage medium |
| CN115767614A (en) * | 2022-11-15 | 2023-03-07 | 广州爱浦路网络技术有限公司 | Communication system, method and device |
| WO2023087923A1 (en) * | 2021-11-16 | 2023-05-25 | 华为技术有限公司 | Method for determining separation of user plane network elements, and communication apparatus |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060215657A1 (en) * | 2005-03-22 | 2006-09-28 | Min-Kyu Lee | ISATAP tunneling system and method between IPv4 network and IPv6 network |
| CN102340547A (en) * | 2010-07-22 | 2012-02-01 | 中国电信股份有限公司 | Distribution management method, equipment and system for IPv4 (Internet Protocol Version 4) address |
| CN102857905A (en) * | 2011-06-28 | 2013-01-02 | 中兴通讯股份有限公司 | Implementation method and system for building direct tunnels as well as network elements |
| CN103384279A (en) * | 2012-05-02 | 2013-11-06 | 中兴通讯股份有限公司 | Address allocation method and device |
| EP2893765A2 (en) * | 2012-09-04 | 2015-07-15 | Telefonaktiebolaget L M Ericsson (publ) | Minimizing mapping and signaling for data path aggregation |
| CN104869178A (en) * | 2014-02-21 | 2015-08-26 | 中兴通讯股份有限公司 | IP address distribution method, controller and gateway device in SDN-EPS |
| CN105357663A (en) * | 2015-11-23 | 2016-02-24 | 中国互联网络信息中心 | Method for supporting mobile node to notify existing IPv6 prefix |
| CN105814943A (en) * | 2013-10-17 | 2016-07-27 | 瑞典爱立信有限公司 | VPNv4 ROUTE CONTROL FOR LTE X2 SON USING UNIQUE ROUTE TARGETS |
| WO2016198101A1 (en) * | 2015-06-10 | 2016-12-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Protecting iaps from ddos attacks |
| CN106888450A (en) * | 2016-11-09 | 2017-06-23 | 中国移动通信有限公司研究院 | Information processing method and device |
| WO2017198791A1 (en) * | 2016-05-18 | 2017-11-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Local break-out in mobile ip networks |
| WO2018127147A1 (en) * | 2017-01-05 | 2018-07-12 | Huawei Technologies Co., Ltd. | Systems and methods for application-friendly protocol data unit (pdu) session management |
| CN108632944A (en) * | 2017-03-21 | 2018-10-09 | 中兴通讯股份有限公司 | The selection method and device of user plane functions entity |
| CN108882305A (en) * | 2017-05-09 | 2018-11-23 | 中国移动通信有限公司研究院 | A kind of shunt method and device of data packet |
| CN108881520A (en) * | 2018-08-30 | 2018-11-23 | 中国联合网络通信集团有限公司 | A kind of distribution method and SMF, communication system of the address IPv6 |
| US10694396B2 (en) * | 2016-01-29 | 2020-06-23 | Sony Corporation | Relay device, terminal device, communication control device, and method |
-
2018
- 2018-11-28 CN CN201811440292.5A patent/CN111246453B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060215657A1 (en) * | 2005-03-22 | 2006-09-28 | Min-Kyu Lee | ISATAP tunneling system and method between IPv4 network and IPv6 network |
| CN102340547B (en) * | 2010-07-22 | 2015-11-25 | 中国电信股份有限公司 | Working level IPv4 is to the smooth transient method of IPv6, equipment and system |
| CN102340547A (en) * | 2010-07-22 | 2012-02-01 | 中国电信股份有限公司 | Distribution management method, equipment and system for IPv4 (Internet Protocol Version 4) address |
| CN102857905A (en) * | 2011-06-28 | 2013-01-02 | 中兴通讯股份有限公司 | Implementation method and system for building direct tunnels as well as network elements |
| CN103384279A (en) * | 2012-05-02 | 2013-11-06 | 中兴通讯股份有限公司 | Address allocation method and device |
| EP2893765A2 (en) * | 2012-09-04 | 2015-07-15 | Telefonaktiebolaget L M Ericsson (publ) | Minimizing mapping and signaling for data path aggregation |
| CN105814943A (en) * | 2013-10-17 | 2016-07-27 | 瑞典爱立信有限公司 | VPNv4 ROUTE CONTROL FOR LTE X2 SON USING UNIQUE ROUTE TARGETS |
| CN104869178A (en) * | 2014-02-21 | 2015-08-26 | 中兴通讯股份有限公司 | IP address distribution method, controller and gateway device in SDN-EPS |
| WO2016198101A1 (en) * | 2015-06-10 | 2016-12-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Protecting iaps from ddos attacks |
| CN105357663A (en) * | 2015-11-23 | 2016-02-24 | 中国互联网络信息中心 | Method for supporting mobile node to notify existing IPv6 prefix |
| US10694396B2 (en) * | 2016-01-29 | 2020-06-23 | Sony Corporation | Relay device, terminal device, communication control device, and method |
| WO2017198791A1 (en) * | 2016-05-18 | 2017-11-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Local break-out in mobile ip networks |
| CN106888450A (en) * | 2016-11-09 | 2017-06-23 | 中国移动通信有限公司研究院 | Information processing method and device |
| WO2018127147A1 (en) * | 2017-01-05 | 2018-07-12 | Huawei Technologies Co., Ltd. | Systems and methods for application-friendly protocol data unit (pdu) session management |
| CN108632944A (en) * | 2017-03-21 | 2018-10-09 | 中兴通讯股份有限公司 | The selection method and device of user plane functions entity |
| CN108882305A (en) * | 2017-05-09 | 2018-11-23 | 中国移动通信有限公司研究院 | A kind of shunt method and device of data packet |
| CN108881520A (en) * | 2018-08-30 | 2018-11-23 | 中国联合网络通信集团有限公司 | A kind of distribution method and SMF, communication system of the address IPv6 |
Non-Patent Citations (3)
| Title |
|---|
| ERICSSON: "Conclusion update on UE IP address allocation in UPF", 《SA WG2 MEETING #129-BIS S2-1811722》 * |
| SAMSUNG: "IP address allocation", 《SA WG2 MEETING #118-BIS S2-170623》 * |
| 吕华章: "边缘计算标准化进展与案例分析", 《计算机研究与发展》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039947A (en) * | 2020-07-21 | 2022-02-11 | 中国电信股份有限公司 | Terminal address allocation method, UPF, system and storage medium |
| CN114039947B (en) * | 2020-07-21 | 2024-03-15 | 中国电信股份有限公司 | Terminal address allocation method, UPF, system and storage medium |
| CN114189843A (en) * | 2020-09-14 | 2022-03-15 | 中国移动通信有限公司研究院 | Information processing method and device, control plane network element and proxy network element |
| CN114363296A (en) * | 2020-09-30 | 2022-04-15 | 大唐移动通信设备有限公司 | Address conflict detection method, user plane network element and control plane network element |
| CN114363296B (en) * | 2020-09-30 | 2023-07-25 | 大唐移动通信设备有限公司 | Address conflict detection method, user plane network element and control plane network element |
| CN113453222A (en) * | 2021-06-24 | 2021-09-28 | 中国联合网络通信集团有限公司 | Communication method and device |
| WO2023087923A1 (en) * | 2021-11-16 | 2023-05-25 | 华为技术有限公司 | Method for determining separation of user plane network elements, and communication apparatus |
| CN114244850A (en) * | 2021-11-18 | 2022-03-25 | 深圳市领创星通科技有限公司 | Data packet processing method and device, computer equipment and storage medium |
| CN114244850B (en) * | 2021-11-18 | 2022-09-02 | 深圳市领创星通科技有限公司 | Data packet processing method and device, computer equipment and storage medium |
| CN114979090A (en) * | 2022-05-27 | 2022-08-30 | 深圳市领创星通科技有限公司 | IPv6 data packet processing method, device, computer equipment and storage medium |
| CN114785756A (en) * | 2022-06-22 | 2022-07-22 | 新华三技术有限公司 | Information sending method, device and equipment |
| CN115767614A (en) * | 2022-11-15 | 2023-03-07 | 广州爱浦路网络技术有限公司 | Communication system, method and device |
| CN115767614B (en) * | 2022-11-15 | 2023-12-15 | 广州爱浦路网络技术有限公司 | Communication system, method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111246453B (en) | 2021-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111246453B (en) | Data transmission method, user plane network element and control plane network element | |
| EP4024922A1 (en) | Method for achieving service continuity and related devices | |
| KR100750370B1 (en) | Address acquisition | |
| KR100697419B1 (en) | System and method for using an ip address as a wireless unit identifier | |
| US9729501B2 (en) | System and data card for stateless automatic configuration of IPv6 address and method for implementing the same | |
| US20030026230A1 (en) | Proxy duplicate address detection for dynamic address allocation | |
| CN108964940B (en) | Message sending method and device and storage medium | |
| EP3720100A1 (en) | Service request processing method and device | |
| US11902876B2 (en) | Routing management method and apparatus | |
| EP1793538B1 (en) | Seamless mobility in layer 2 radio access networks | |
| EP4033731A1 (en) | Service processing method, device, and system | |
| CN1902877A (en) | Apparatus and method of controlling unsolicited traffic destined to a wireless communication device | |
| JP5459809B2 (en) | Method for obtaining the IP address of a dynamic host configuration protocol version 6 server, dynamic host configuration protocol version 6 server, and dynamic host configuration protocol version 6 communication system | |
| EP2434703A1 (en) | Method and terminal for transmitting service data | |
| WO2021138804A1 (en) | Method and apparatus for resolving domain name in case of local access to data network | |
| WO2010012189A1 (en) | Method and system for transmitting the gtp message | |
| CN101309154B (en) | Datagram sending method, sending apparatus and transmission system | |
| CN107592261A (en) | Message processing method, device and router | |
| CN110100416B (en) | Method, equipment and system for selecting gateway | |
| CN115150363B (en) | IP address updating method, gateway device, gateway down-hanging device and storage medium | |
| JP2016530601A (en) | Flow control method and apparatus | |
| CN107454656A (en) | A kind of subnet access method and device | |
| CN108243080B (en) | Intelligent method and device for optical network unit | |
| CN115460143A (en) | Message processing method and device and electronic equipment | |
| CN117354232A (en) | Message routing method, device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |