CN107920372B - Information indication method and device - Google Patents
Information indication method and device Download PDFInfo
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- CN107920372B CN107920372B CN201610884635.1A CN201610884635A CN107920372B CN 107920372 B CN107920372 B CN 107920372B CN 201610884635 A CN201610884635 A CN 201610884635A CN 107920372 B CN107920372 B CN 107920372B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
Abstract
The invention provides an information indication method and device, relates to the technical field of communication, and aims to ensure the reliability of data transmission. The information indication method of the invention comprises the following steps: sending indication information to the radio access network RAN, the indication information indicating whether the protocol data unit PDU session is a fully continuous PDU session or a partially continuous PDU session. The invention is mainly used in the PDU conversation switching technology.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information indicating method and apparatus.
Background
The NextGen (next generation) system places a need for PDU sessions (Protocol Data units) to support multiple continuities. For this, three consecutive patterns SSC mode are defined in the current TR: SSC mode1 (first continuity mode), SSC mode2 (second continuity mode), SSC mode3 (third continuity mode).
Wherein, the SSC mode1 means that a user plane IP anchor point is allocated to the PDU session, and the user plane IP anchor point is kept unchanged in the survival period of the whole PDU session. The SSC mode2 means that the User plane IP anchor allocated to the PDU session can only be maintained in a certain service area, and when a UE (User Equipment) moves out of the service area of the User plane IP anchor, the UE needs to select a new User plane IP anchor. SSC mode3 means that a user plane IP anchor has been selected for this PDU session and a PDU session to the data network is established. Before the connection of the UE to the user plane IP anchor point is terminated, a new PDU session to the same data network is established, and a new user plane IP anchor point is selected for the new PDU session. The UE may transfer the data flow to a new PDU session and then delete the previous PDU session connection.
The above three SSC modes are support for different continuity of PDU sessions. The PDU session with attribute SSCmode 1 can still be maintained when the UE is handed over. When the UE switches to a new RAN (radio access network), if the new RAN and the user plane IP anchor can maintain connection, the PDU session with the attribute of SSC mode2 can still be guaranteed after the switching. If the new RAN and the user plane IP anchor point can not keep connection, the PDU conversation can release connection when switching occurs, and the establishment process of the PDU conversation is restarted after the UE is switched to a new cell, so that a new user plane IP anchor point is selected for the UE. While in the PDU session of SSC mode3 the UE can maintain two PDU session connections to different user plane IP anchors. The UE establishes a new PDU session connection before deleting the existing PDU session connection, and then transfers the data stream from the original PDU session connection to the new PDU session connection.
When a handover occurs for a UE, different processing is required for PDU sessions with different SSC modes. However, according to the prior art, the RAN cannot determine which mode the PDU session belongs to, and therefore cannot determine a new user plane IP anchor point for the UE when the UE is handed over, so that the UE cannot transmit data.
Disclosure of Invention
In view of the above, the present invention provides an information indicating method and apparatus for ensuring reliability of data transmission.
In order to solve the above technical problem, the present invention provides an information indicating method, including:
sending indication information to the radio access network RAN, the indication information indicating whether the protocol data unit PDU session is a fully continuous PDU session or a partially continuous PDU session.
Wherein the completely continuous PDU session means that the PDU session has continuity when the user equipment moves among all RANs;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
Wherein the sending the indication information to the RAN includes:
and sending a PDU session establishment request to the RAN, wherein the PDU session establishment request comprises the indication information.
When the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a completely continuous PDU session, the indication information is first continuity mode information; when the PDU session is a partially continuous PDU session, the indication information is second continuity mode information and/or third continuity mode information.
Wherein, prior to the sending of the indication information to the radio access network, RAN, the method further comprises:
and selecting a local user plane IP anchor point for the PDU session.
Wherein the selecting a local user plane IP anchor for the PDU session comprises:
receiving a PDU session establishment request message of the RAN;
and selecting a local user plane IP anchor point for the PDU session according to the PDU session establishment request message.
Wherein the selecting a local user plane IP anchor for the PDU session according to the PDU session setup request message includes:
sending a DNS query message to a DNS domain name system server, wherein the DNS query message comprises indication information for acquiring an IP address of a local user plane IP anchor, and the indication information for acquiring the IP address of the local user plane IP anchor is used for indicating the DNS server to select the IP address of the local user plane IP anchor;
and receiving a DNS response message sent by the DNS server, wherein the DNS response message comprises the IP address of the local user plane IP anchor point selected by the DNS server.
And the indication information for acquiring the IP address of the IP anchor point of the local user plane is second continuity mode information or third continuity mode information.
Wherein the selecting a local user plane IP anchor for the PDU session comprises:
sending a DNS query message to a DNS domain name system server, wherein the DNS query message comprises second continuity mode information or third continuity mode information;
and receiving a DNS response message sent by the DNS server, wherein the DNS response message comprises an IP address and information indicating that the IP address is the IP address of the local user plane IP anchor point.
In a second aspect, the present invention provides an information indicating method, including:
receiving indication information of a core network control plane functional entity, wherein the indication information is used for indicating whether a Protocol Data Unit (PDU) session is a completely continuous PDU session or a partially continuous PDU session;
and performing corresponding switching processing according to the indication information.
Wherein the completely continuous PDU session means that the PDU session has continuity when the user equipment moves among all RANs;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
In a third aspect, the present invention provides an information indicating apparatus, comprising:
a sending module, configured to send indication information to a radio access network RAN, where the indication information is used to indicate whether a protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session.
Wherein the completely continuous PDU session means that the PDU session has continuity when the user equipment moves among all RANs;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
Wherein the sending module is specifically configured to:
and sending a PDU session establishment request to the RAN, wherein the PDU session establishment request comprises the indication information.
When the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a completely continuous PDU session, the indication information is first continuity mode information; when the PDU session is a partially continuous PDU session, the indication information is second continuity mode information and/or third continuity mode information.
Wherein the apparatus further comprises:
and the selection module is used for selecting a local user plane IP anchor point for the PDU session.
Wherein the selection module comprises:
a receiving submodule, configured to receive a PDU session establishment request message of the RAN;
and the selection submodule is used for selecting a local user plane IP anchor point for the PDU session according to the PDU session establishment request message.
Wherein the selection submodule comprises:
a sending unit, configured to send a DNS query message to a DNS nameserver, where the DNS query message includes indication information for acquiring an IP address of a local user plane IP anchor, and the indication information for acquiring an IP address of a local user plane IP anchor is used to indicate that the DNS server selects an IP address of a local user plane IP anchor;
a receiving unit, configured to receive a DNS response message sent by the DNS server, where the DNS response message includes an IP address of a local user plane IP anchor selected by the DNS server.
And the indication information for acquiring the IP address of the IP anchor point of the local user plane is second continuity mode information or third continuity mode information.
Wherein the selection module comprises:
the sending submodule is used for sending a DNS query message to a DNS domain name system server, and the DNS query message comprises second continuity mode information or third continuity mode information;
and the receiving submodule is used for receiving a DNS response message sent by the DNS server, wherein the DNS response message comprises an IP address and information indicating that the IP address is the IP address of the local user plane IP anchor point.
In a fourth aspect, the present invention provides an information indicating apparatus, comprising:
a receiving module, configured to receive indication information of a core network control plane function entity, where the indication information is used to indicate whether a protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session;
and the processing module is used for carrying out corresponding switching processing according to the indication information.
Wherein the completely continuous PDU session means that the PDU session has continuity when the user equipment moves among all RANs;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
The technical scheme of the invention has the following beneficial effects:
in the embodiment of the invention, indication information used for indicating whether a Protocol Data Unit (PDU) session is a completely continuous PDU session or a partially continuous PDU session is sent to the RAN, so that the RAN side can perform corresponding switching processing according to the indication information when the switching of user equipment is executed, and the reliability of data transmission is ensured.
Drawings
Fig. 1 is a flowchart of an information indication method according to a first embodiment of the present invention;
FIG. 2 is a flowchart of an information indication method according to a second embodiment of the present invention;
FIG. 3 is a flowchart of an information indication method according to a third embodiment of the present invention;
fig. 4 is a flowchart illustrating a third embodiment of the present invention for selecting a local user plane IP anchor;
fig. 5 is a second flowchart of selecting a local user plane IP anchor according to a third embodiment of the present invention;
FIG. 6 is a diagram of an information indicating apparatus according to a fourth embodiment of the present invention;
FIG. 7 is a diagram showing a configuration of an information indicating apparatus according to a fourth embodiment of the present invention;
FIG. 8 is a flowchart of an information indication method according to a fifth embodiment of the present invention;
fig. 9 is a schematic view of an information indicating apparatus according to a sixth embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example one
As shown in fig. 1, an information indication method according to a first embodiment of the present invention is applied to a core network control plane function entity, and includes:
Wherein the completely continuous PDU session means that the PDU session has continuity when the user equipment moves among all RANs; the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
In the embodiment of the present invention, the core network control plane function entity is mainly used for session management, and the like. The current user plane IP anchor refers to a user plane IP anchor that serves the current PDU session of the user equipment. In practical applications, the current user plane IP anchor may have a connection relationship with multiple RANs, and then these RANs form the service scope of the current user plane IP anchor. That is, the RANs having connection relation with the current user plane IP anchor are all located within the service range of the current user plane IP anchor. And when the UE moves out of the RAN located in the service range of the IP anchor point of the current user plane, the UE can be considered to move out of the service range of the IP anchor point of the current user plane.
As described in the background, the PDU sessions of SSC mode1 (first continuity mode) can be considered to be completely continuous, and the PDU sessions of SSC mode2 (second continuity mode), SSC mode3 (third continuity mode) can be considered to be partially continuous.
In the embodiment of the present invention, the indication information may be a customized new indication information, or may also be represented by an SSC mode.
For example, the indication information is a new indication information. For example, the indication information may be a flag. When the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; and when the PDU session is a partial continuous PDU session, the value of the indication information is a second preset value. The first preset value may be 0, and the second preset value may be 1. And vice versa. That is, in this case, the core network control plane function entity indicates to the RAN whether the PDU session is fully or partially continuous.
For another example, when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value. The second preset value may be 0 or 1, or may also be other identifiers. That is, in this case, the core network control plane function entity indicates to the RAN only if the PDU session is partially continuous.
As another example, the indication information may be represented using an SSC mode.
Specifically, when the PDU session is a completely continuous PDU session, the indication information is SSC mode 1; when the PDU session is a partially continuous PDU session, the indication information is SSC mode2 and/or SSC mode 3.
Then, when the RAN receives the SSC mode1, the PDU session is considered to have continuity as it moves between all RANs; upon receipt of mode2 and/or SSC mode3, the RAN then considers that the PDU session has continuity when the UE moves within service range of the current user plane IP anchor; and when the user equipment moves out of the service range of the current user plane IP anchor point, the PDU session has no continuity.
In fact, any form of indication information may be used here, as long as the core network control plane function entity and the RAN have a good agreement.
As can be seen from the above, in the embodiment of the present invention, by sending, to the RAN, the indication information indicating whether the protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session, the RAN side can perform corresponding handover processing according to the indication information when performing handover of the user equipment, thereby ensuring reliability of data transmission.
Example two
As shown in fig. 2, the information indication method according to the second embodiment of the present invention is applied to a core network control plane function entity, and includes:
step 201, a core network control plane function entity sends a PDU session establishment request to the RAN, where the PDU session establishment request includes indication information.
In this embodiment, when establishing a session connection to the RAN, the indication information is carried in the context of a core network control plane function entity PDU session.
Specifically, the core network control plane function entity sends a PDU session establishment request to the RAN, and notifies the RAN side of establishing PDU session connection. The request includes PDU session context information, a tunnel identifier established for the PDU session, QoS (Quality of service) information, and the like. If the user plane IP anchor of this PDU session is a local user plane IP anchor, i.e. this user plane IP anchor has a connection only to part of the RAN, then the indication information is also carried in the request.
The meaning of the indication information can refer to the description of the first embodiment.
Step 202, the core network control plane function entity receives a PDU session establishment completion message sent by the RAN.
Specifically, the RAN stores the context information and the indication information of the PDU session, and returns a PDU session establishment completion message to the core network control plane functional entity. Correspondingly, the core network control plane functional entity receives the PDU session establishment completion message.
As can be seen from the above, in the embodiment of the present invention, by sending, to the RAN, the indication information indicating whether the protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session, the RAN side can perform corresponding handover processing according to the indication information when performing handover of the user equipment, thereby ensuring reliability of data transmission.
EXAMPLE III
As shown in fig. 3, the information indication method according to the third embodiment of the present invention is applied to a core network control plane function entity, and includes:
Specifically, in this process, the core network control plane function entity receives a PDU session establishment request message of the RAN, and selects a local user plane IP anchor point for the PDU session according to the PDU session establishment request message.
Specifically, in practical application, the core network control plane function entity may select a local user plane IP anchor for the PDU session in different manners.
In the first mode, the core network control plane functional entity determines to select a local user plane IP anchor point for the PDU session according to the current position of the UE, the continuity mode of the PDU session and other information, and then obtains the IP address of the local user plane IP anchor point from the DNS server. The DNS server selects a local user plane IP anchor point for the PDU conversation and returns the IP address of the local user plane IP anchor point allocated for the PDU conversation to the core network control plane functional entity.
As shown in fig. 4, this method includes the following processes:
step 401, the core network control plane functional entity determines to select a local user plane IP anchor point for the PDU session according to the current location of the UE, the continuity mode of the PDU session, and other information.
Step 402, the core network control plane function entity sends a DNS query message to the DNS server.
The DNS query message comprises indication information for acquiring the IP address of the local user plane IP anchor, and the indication information for acquiring the IP address of the local user plane IP anchor is used for indicating the DNS server to select the IP address of the local user plane IP anchor. The indication information for acquiring the IP address of the local user plane IP anchor is second continuity mode information (SSC mode2) or third continuity mode information (SSC mode 3).
In addition, the DNS query message also includes a data network Name of the PDU session connection, such as an APN (access point Name), current location information of the UE, and the like.
Step 403, the core network control plane function entity receives a DNS response message sent by the DNS server, where the DNS response message includes an IP address of the local user plane IP anchor selected by the DNS server.
And secondly, the core network control plane functional entity acquires the IP address of the local user plane IP anchor point of the PDU session through a DNS query request. The DNS server returns the IP address of the local user plane IP anchor point to the core network control plane functional entity, and if the DNS server selects the local user plane IP anchor point for the PDU session, information indicating that the IP address is the IP address of the local user plane IP anchor point is added in the returned DNS message.
As shown in fig. 5, this method includes the following processes:
step 501, the core network control plane function entity sends a DNS query message to a DNS server, where the DNS query message includes SSC mode information, and the SSC mode information includes second continuity mode information (SSC mode2) or third continuity mode information (SSC mode 3).
In addition, the DNS query message also includes a data network name of the PDU session connection, such as an APN, current location information of the UE, and the like.
Step 502, a core network control plane function entity receives a DNS response message sent by the DNS server, where the DNS response message includes an IP address and information indicating that the IP address is an IP address of a local user plane IP anchor.
Specifically, the DNS server selects a local user plane IP anchor for the PDU session according to the information in the DNS query request, and returns the IP address of the user plane IP anchor and information indicating that the IP address is the IP address of the local user plane IP anchor.
The implementation process of this step can refer to the description of the second embodiment.
As can be seen from the above, in the embodiment of the present invention, by sending, to the RAN, the indication information indicating whether the protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session, the RAN side can perform corresponding handover processing according to the indication information when performing handover of the user equipment, thereby ensuring reliability of data transmission.
Example four
As shown in fig. 6, an information indicating apparatus 600 according to a fourth embodiment of the present invention includes:
a sending module 601, configured to send indication information to a radio access network RAN, where the indication information is used to indicate whether a PDU session is a completely continuous PDU session or a partially continuous PDU session.
The completely continuous PDU session means that when the user equipment moves among all RANs, the PDU session has continuity; the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
Specifically, in various practical applications, the sending module 601 is specifically configured to: and sending a PDU session establishment request to the RAN, wherein the PDU session establishment request comprises the indication information.
As described in the foregoing embodiments, in the embodiment of the present invention, the indication information may be a customized new indication information, or may also be represented by an SSC mode.
For example, when the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or when the PDU session is a completely continuous PDU session, the indication information is first continuity mode information; when the PDU session is a partially continuous PDU session, the indication information is second continuity mode information and/or third continuity mode information. The values of the first preset value and the second preset value can be set randomly.
As shown in fig. 7, the apparatus further includes: a selecting module 602, configured to select a local user plane IP anchor for the PDU session.
Wherein the selecting module 602 comprises: a receiving submodule, configured to receive a PDU session establishment request message of the RAN; and the selection submodule is used for selecting a local user plane IP anchor point for the PDU session according to the PDU session establishment request message.
Specifically, the selection sub-module includes: a sending unit, configured to send a DNS query message to a DNS nameserver, where the DNS query message includes indication information for acquiring an IP address of a local user plane IP anchor, and the indication information for acquiring an IP address of a local user plane IP anchor is used to indicate that the DNS server selects an IP address of a local user plane IP anchor; a receiving unit, configured to receive a DNS response message sent by the DNS server, where the DNS response message includes an IP address of a local user plane IP anchor selected by the DNS server.
And the indication information for acquiring the IP address of the IP anchor point of the local user plane is second continuity mode information or third continuity mode information.
Wherein the selecting module 602 comprises: the sending submodule is used for sending a DNS query message to a DNS domain name system server, and the DNS query message comprises second continuity mode information or third continuity mode information; and the receiving submodule is used for receiving a DNS response message sent by the DNS server, wherein the DNS response message comprises an IP address and information indicating that the IP address is the IP address of the local user plane IP anchor point.
The working principle of the device according to the present invention may refer to the description of the foregoing method embodiment, and the device may be located in a core network control plane functional entity.
As can be seen from the above, in the embodiment of the present invention, by sending, to the RAN, the indication information indicating whether the protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session, the RAN side can perform corresponding handover processing according to the indication information when performing handover of the user equipment, thereby ensuring reliability of data transmission.
EXAMPLE five
As shown in fig. 8, an information indication method according to the fifth embodiment of the present invention is applied to a RAN, and includes:
step 801, receiving indication information of a core network control plane function entity, where the indication information is used to indicate whether a PDU session is a completely continuous PDU session or a partially continuous PDU session.
And step 802, performing corresponding switching processing according to the indication information.
Wherein the completely continuous PDU session means that the PDU session has continuity when the user equipment moves among all RANs; the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
As can be seen from the above, in the embodiment of the present invention, by sending, to the RAN, the indication information indicating whether the protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session, the RAN side can perform corresponding handover processing according to the indication information when performing handover of the user equipment, thereby ensuring reliability of data transmission.
EXAMPLE six
As shown in fig. 9, an information indicating apparatus 900 according to a sixth embodiment of the present invention includes:
a receiving module 901, configured to receive indication information of a core network control plane function entity, where the indication information is used to indicate whether a protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session; a processing module 902, configured to perform corresponding handover processing according to the indication information.
Wherein the completely continuous PDU session means that the PDU session has continuity when the user equipment moves among all RANs; the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
The working principle of the device of the present invention can refer to the description of the foregoing method embodiment, and the device can be located in the RAN.
As can be seen from the above, in the embodiment of the present invention, by sending, to the RAN, the indication information indicating whether the protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session, the RAN side can perform corresponding handover processing according to the indication information when performing handover of the user equipment, thereby ensuring reliability of data transmission.
An embodiment of the present invention provides a data processing apparatus, including: a processor; and a memory connected to the processor through a bus interface, the memory being used to store programs and data used by the processor in performing operations, and when the processor calls and executes the programs and data stored in the memory, the memory including functional modules or units implementing:
a sending module, configured to send indication information to a radio access network RAN, where the indication information is used to indicate whether a protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session.
An eighth embodiment of the present invention provides a data processing apparatus, including: a processor; and a memory connected to the processor through a bus interface, the memory being used to store programs and data used by the processor in performing operations, and when the processor calls and executes the programs and data stored in the memory, the memory including functional modules or units implementing:
a receiving module, configured to receive indication information of a core network control plane function entity, where the indication information is used to indicate whether a protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session;
and the processing module is used for carrying out corresponding switching processing according to the indication information.
It should be noted that the apparatuses provided in the seventh and eighth embodiments of the present invention are apparatuses capable of implementing the information indication method provided in the foregoing method embodiment, so that all the embodiments of the information indication method provided in the foregoing method embodiment can be applied to the seventh and eighth embodiments, and can achieve the same or similar beneficial effects.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. 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.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. An information indication method is applied to a core network control plane functional entity, and is characterized by comprising the following steps:
sending indication information to a Radio Access Network (RAN), wherein the indication information is used for indicating whether a Protocol Data Unit (PDU) session is a completely continuous PDU session or a partially continuous PDU session;
when the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a completely continuous PDU session, the indication information is first continuity mode information; when the PDU session is a partially continuous PDU session, the indication information is second continuity mode information and/or third continuity mode information;
the sending of the indication information to the radio access network RAN includes:
and sending a PDU session establishment request to the RAN, wherein the PDU session establishment request comprises the indication information.
2. The method of claim 1,
the completely continuous PDU session means that when the user equipment moves among all RANs, the PDU session has continuity;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
3. The method of claim 1, wherein prior to said sending the indication information to the radio access network, RAN, the method further comprises:
and selecting a local user plane IP anchor point for the PDU session.
4. The method of claim 3, wherein selecting a local user plane IP anchor for the PDU session comprises:
receiving a PDU session establishment request message of the RAN;
and selecting a local user plane IP anchor point for the PDU session according to the PDU session establishment request message.
5. The method of claim 4, wherein selecting a local user plane IP anchor for the PDU session according to the PDU session establishment request message comprises:
sending a DNS query message to a DNS domain name system server, wherein the DNS query message comprises indication information for acquiring an IP address of a local user plane IP anchor, and the indication information for acquiring the IP address of the local user plane IP anchor is used for indicating the DNS server to select the IP address of the local user plane IP anchor;
and receiving a DNS response message sent by the DNS server, wherein the DNS response message comprises the IP address of the local user plane IP anchor point selected by the DNS server.
6. The method of claim 5, wherein the indication information for obtaining the IP address of the local user plane IP anchor is second continuity mode information or third continuity mode information.
7. The method of claim 3, wherein selecting a local user plane IP anchor for the PDU session comprises:
sending a DNS query message to a DNS domain name system server, wherein the DNS query message comprises second continuity mode information or third continuity mode information;
and receiving a DNS response message sent by the DNS server, wherein the DNS response message comprises an IP address and information indicating that the IP address is the IP address of the local user plane IP anchor point.
8. An information indication method, comprising:
receiving indication information of a core network control plane functional entity, wherein the indication information is used for indicating whether a Protocol Data Unit (PDU) session is a completely continuous PDU session or a partially continuous PDU session;
performing corresponding switching processing according to the indication information;
when the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a completely continuous PDU session, the indication information is first continuity mode information; when the PDU session is a partially continuous PDU session, the indication information is second continuity mode information and/or third continuity mode information;
wherein, the indication message is carried in a PDU session establishment request sent by the core network control plane functional entity.
9. The method of claim 8,
the completely continuous PDU session means that when the user equipment moves among all RANs, the PDU session has continuity;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
10. An information indicating apparatus, applied to a core network control plane function entity, comprising:
a sending module, configured to send indication information to a radio access network RAN, where the indication information is used to indicate whether a protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session;
when the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a completely continuous PDU session, the indication information is first continuity mode information; when the PDU session is a partially continuous PDU session, the indication information is second continuity mode information and/or third continuity mode information;
the sending module is specifically configured to:
and sending a PDU session establishment request to the RAN, wherein the PDU session establishment request comprises the indication information.
11. The apparatus of claim 10,
the completely continuous PDU session means that when the user equipment moves among all RANs, the PDU session has continuity;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
12. The apparatus of claim 10, further comprising:
and the selection module is used for selecting a local user plane IP anchor point for the PDU session.
13. The apparatus of claim 12, wherein the selection module comprises:
a receiving submodule, configured to receive a PDU session establishment request message of the RAN;
and the selection submodule is used for selecting a local user plane IP anchor point for the PDU session according to the PDU session establishment request message.
14. The apparatus of claim 13, wherein the selection submodule comprises:
a sending unit, configured to send a DNS query message to a DNS nameserver, where the DNS query message includes indication information for acquiring an IP address of a local user plane IP anchor, and the indication information for acquiring an IP address of a local user plane IP anchor is used to indicate that the DNS server selects an IP address of a local user plane IP anchor;
a receiving unit, configured to receive a DNS response message sent by the DNS server, where the DNS response message includes an IP address of a local user plane IP anchor selected by the DNS server.
15. The apparatus of claim 14, wherein the indication information for obtaining the IP address of the local user plane IP anchor is second continuity mode information or third continuity mode information.
16. The apparatus of claim 12, wherein the selection module comprises:
the sending submodule is used for sending a DNS query message to a DNS domain name system server, and the DNS query message comprises second continuity mode information or third continuity mode information;
and the receiving submodule is used for receiving a DNS response message sent by the DNS server, wherein the DNS response message comprises an IP address and information indicating that the IP address is the IP address of the local user plane IP anchor point.
17. An information indicating device, comprising:
a receiving module, configured to receive indication information of a core network control plane function entity, where the indication information is used to indicate whether a protocol data unit PDU session is a completely continuous PDU session or a partially continuous PDU session;
the processing module is used for carrying out corresponding switching processing according to the indication information;
when the PDU session is a completely continuous PDU session, the value of the indication information is a first preset value; when the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a partially continuous PDU session, the value of the indication information is a second preset value; or
When the PDU session is a completely continuous PDU session, the indication information is first continuity mode information; when the PDU session is a partially continuous PDU session, the indication information is second continuity mode information and/or third continuity mode information;
wherein, the indication message is carried in a PDU session establishment request sent by the core network control plane functional entity.
18. The apparatus of claim 17,
the completely continuous PDU session means that when the user equipment moves among all RANs, the PDU session has continuity;
the partial continuous PDU session means that when the user equipment moves in the service range of the current user plane IP anchor point, the protocol data unit PDU session connected to the current user plane IP anchor point has continuity; the PDU session has no continuity when the user equipment moves out of service range of the current user plane IP anchor.
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