CN113543232A - Data transmission method, terminal, user plane functional entity and server - Google Patents
Data transmission method, terminal, user plane functional entity and server Download PDFInfo
- Publication number
- CN113543232A CN113543232A CN202010315489.7A CN202010315489A CN113543232A CN 113543232 A CN113543232 A CN 113543232A CN 202010315489 A CN202010315489 A CN 202010315489A CN 113543232 A CN113543232 A CN 113543232A
- Authority
- CN
- China
- Prior art keywords
- data packet
- field value
- service quality
- session
- preset field
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
Abstract
The embodiment of the invention provides a data transmission method, a terminal, a user plane functional entity and a server. The data transmission method comprises the following steps: acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header; in the session establishing process, determining the slice information of the current session or the service quality requirement of the service flow; determining a preset field value of an uplink data packet header according to the mapping relation, the slice information of the session, the service quality requirement or a preset field value of a downlink data packet header; and transmitting the uplink data packet. The scheme of the invention realizes the service quality guarantee of the session between different networks by determining the slice of the session or the mapping relation between the QoS and the specific field of the data packet header.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a terminal, a user plane functional entity, and a server.
Background
As shown in fig. 1, a 5G network architecture is shown, where the system architecture includes end-to-end nodes or network elements, and includes:
ue (user equipment): 5G terminal equipment; (R) AN: an access network device; UPF (user plane function): a user plane function device; the 5G control plane adopts a service-based architecture, and the control plane network element comprises AUSF, AMF, SMF, NSSF, NEF, NRF, PCF, UDM and AF;
among them, the amf (mobility Management function) mobility Management function;
smf (session Management function): a session management function;
pcf (policy Control function): a policy control function;
UDM (unified Data management): and (5) unifying the databases. The functions of user subscription data management, authentication information generation, mobility management, short message routing and the like are completed;
ausf (authentication Server function): and an authentication server function providing authentication related functions.
As shown in fig. 2, a 5G network slice logical architecture diagram is shown in which a network slice is an end-to-end logical private network that provides specific network capabilities. An example of a network slice is a set of network functions and required physical/virtual resources, which may specifically include access networks, core networks, transport bearer networks, and applications. The network slice can be constructed based on traditional proprietary hardware and can also be constructed based on NFV/SDN general infrastructure, and is based on a unified infrastructure as much as possible, so that low-cost and high-efficiency operation is realized. The three 5G slice types comprise slices of a large connection scene of the Internet of things, enhanced broadband scene slices and slices in an ultra-low time delay and ultra-high reliability scene.
The Network Slice is identified by an S-NSSAI (Single Network Slice Selection Assistant Information). The S-NSSAI runs through the whole life cycle of the network slice, the network slice is identified by the S-NSSAI, slice resources of different domains (a wireless access network, a transmission network and a core network) can be associated through the slice identification S-NSSAI, and an independent logic slice network is formed
NSSAI is a set of S-NSSAIs, one NSSAI may be a configuration NSSAI, a request NSSAI or a grant NSSAI, and one NSSAI may be associated with up to 8S-NSSAIs. The request NSSAI is carried by the terminal in the attachment flow, and the NSSAI is configured and allowed to be issued to the terminal by the network.
The Network Slice instance (Network Slice instance) refers to a Slice resource of an actual service terminal, and includes a set of Network function instances and corresponding resources. According to the network deployment requirement, one network slice instance (network slice instance) may be associated with one or more S-NSSAIs, and one S-NSSAI may also be associated with one or more network slice instances.
And the 5G core network selects a corresponding network slice example for the terminal according to the request S-NSSAI and the user subscription, wherein the network slice example comprises control plane and user plane network functions. The wireless access network selects AMF according to the request slice identification carried in the access signaling of the user terminal, and after the terminal is successfully registered, the core network sends the allowed NSSAI to the wireless access network and the terminal.
The single network slice selection assistance information S-NSSAI identifies a specific network slice, is not repeated within a PLMN, and consists of two parts:
1) SST: slice type, with 8 bits total, which refers to the expected network slice behavior in terms of function and service, the standard has now defined SST ═ 1, 2, 3, 4 as four classes Embb, UrLLC, mtc, V2X, respectively.
2) SD: the slice differentiation symbols supplement the slice/service type to differentiate multiple network slices of the same slice/service type, for a total of 24 bits, customized by the operator.
Currently, the service guarantee of slicing is limited to a part of operator 5G network, and the end-to-end service has a non-operator 5G network part besides the operator 5G network.
In the process of moving a session in a 5G slice area and a non-slice area (a non-5G network or non-slice coverage), or in the process of end-to-end session transmission, the QoS (quality of service) of a session service subscribed with a 5G slice cannot be effectively guaranteed.
Disclosure of Invention
The invention provides a data transmission method, a terminal, a user plane functional entity and a server. The problem of how to guarantee the QoS of the session service signed with the 5G slice to the maximum extent in the movement of the session in the 5G slice area and the non-slice area (non-5G network or non-slice coverage) or in the end-to-end session transmission process is solved.
To solve the above technical problem, an embodiment of the present invention provides the following solutions:
a data transmission method is applied to a terminal or a client, and comprises the following steps:
acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
in the session establishing process, determining the slice information of the current session or the service quality requirement of the service flow;
determining a preset field value of an uplink data packet header according to the mapping relation, the slice information of the session, the service quality requirement or a preset field value of a downlink data packet header;
and transmitting the uplink data packet.
Optionally, transmitting the uplink data packet includes: and in the 5G network, transmitting the uplink data packet to a user plane function UPF through the slice corresponding to the slice information or according to the service quality information.
The optional data transmission method further comprises: and transmitting the uplink data packet to a server in a non-5G network through the UPF, and acquiring corresponding slice information or service quality by transmission equipment between the UPF and the server according to a preset field value of the packet header of the uplink data packet.
Optionally, when the client determines the preset field value of the header of the uplink data packet, the method further includes:
and the terminal verifies the preset field value of the upstream data packet header according to the mapping relation between the service quality requirement of the session or the service flow and the preset field value of the data packet header, and if the verification fails, the preset field value of the upstream data packet header is corrected or deleted.
The optional data transmission method further comprises:
and receiving a downlink data packet sent by the server through a slice corresponding to the slice information or according to a service quality requirement, wherein a preset field value of a header of the downlink data packet is determined by the server according to the slice information of the current session or the service quality requirement of the service flow or a preset field value of a header of an uplink data packet.
Optionally, the downlink data packet and the uplink data packet are both IP data packets, and the preset field value of the header of the downlink data packet and the preset field value of the header of the uplink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
The embodiment of the invention also provides a data transmission method, which is applied to the user plane function UPF and comprises the following steps:
acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the method comprises the steps that a receiving terminal determines slice information of a current session or service quality requirements of a service flow in a session establishing process, and transmits an uplink data packet through a slice corresponding to the slice information or according to service quality;
determining a preset field value of the head of the uplink data packet according to the mapping relation and the slice information or the service quality requirement of the current session;
and transmitting the uplink data packet.
Optionally, in the session establishment process, the receiving terminal determines slice information of a current session or a service quality requirement of a service flow, and sends an uplink data packet through a slice corresponding to the slice information or according to the service quality, where the receiving terminal includes:
and the receiving terminal determines slice information of the current session or the service quality requirement of the service flow in the session establishing process, and transmits an uplink data packet through a slice corresponding to the slice information in the 5G network or according to the service quality.
Optionally, transmitting the uplink data packet includes: and transmitting the uplink data packet to a server of a non-5G network, wherein the transmission equipment between the UPF and the server acquires corresponding slice information or service quality according to a preset field value of the header of the uplink data packet.
Optionally, the data transmission method further includes:
receiving a downlink data packet sent by a server;
determining a preset field value of a downlink data packet header according to the slice information or the service quality requirement of the session;
and transmitting the downlink data packet to a terminal.
Optionally, the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
Optionally, the data transmission method further includes:
and for the uplink data packet or the downlink data packet which is not the UPF and determines the specific field value of the data packet header, the UPF verifies the specific field value of the uplink data packet or the downlink data packet header according to the mapping relation between the maintained slice information of the session or the service quality requirement of the service flow and the preset field value of the data packet header, and if the verification fails, the preset field value in the uplink data packet or the downlink data packet header is corrected or deleted.
The embodiment of the invention also provides a data transmission method which is applied to the server and comprises the following steps:
acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
determining a preset field value of a downlink data packet header according to the slice information of the current session or the service quality requirement or the preset field value of the uplink data packet header;
and transmitting the downlink data packet.
Optionally, the data transmission method further includes: and receiving an uplink data packet transmitted by a user plane function UPF in the 5G network.
Optionally, the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
An embodiment of the present invention further provides a terminal, including:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the determining module is used for determining the slice information of the current session or the service quality requirement of the service flow in the session establishing process; determining a preset field value of an uplink data packet header according to the mapping relation, the slice information of the session, the service quality requirement or a preset field value of a downlink data packet header;
and the transmission module is used for transmitting the uplink data packet.
The embodiment of the present invention further provides a user plane functional entity, including:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the receiving module is used for receiving an uplink data packet which is sent by a slice corresponding to the slice information or according to the service quality;
the determining module is used for determining a preset field value of the head of the uplink data packet according to the mapping relation and the slice information or the service quality requirement of the current session;
and the transmission module is used for transmitting the uplink data packet.
An embodiment of the present invention further provides a server, including:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the determining module is used for determining a preset field value of a downlink data packet header according to the slice information of the current session, the service quality requirement or the preset field value of the uplink data packet header;
a transmission module for transmitting the downlink data packet
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.
The scheme of the invention at least comprises the following beneficial effects:
the scheme of the invention realizes the service quality guarantee of the session between different networks by determining the slice of the session or the mapping relation between the QoS and the specific field of the data packet header.
Drawings
FIG. 1 is a 5G network architecture;
FIG. 2 is a diagram of a 5G network slice logical architecture;
fig. 3 is a flowchart illustrating a data transmission method at a terminal or a client according to an embodiment of the present invention;
fig. 4 is a schematic diagram of uplink and downlink data transmission flow according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating the structure of an IP packet according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a structure of a field used for representing slice information in an IP packet according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a data transmission method on the UPF side according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating a specific process on the UPF side according to an embodiment of the present invention;
FIG. 9 is a schematic flow chart of another embodiment of the UPF side of the present invention;
fig. 10 is a flowchart illustrating a data transmission method at a server side according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 3, an embodiment of the present invention provides a data transmission method, which is applied to a terminal or a client, where the method includes:
and step 34, transmitting the uplink data packet.
The embodiment of the invention realizes the service quality guarantee of the session between different networks by determining the slice of the session or the mapping relation between the service quality QoS and the specific field of the data packet header.
In an alternative embodiment of the present invention, the step 34 may include:
step 341, in the 5G network, the uplink data packet is transmitted to the user plane function UPF entity through the slice corresponding to the slice information or according to the service quality information.
Further, in an optional embodiment of the present invention, the optional data transmission method, based on the steps 31 to 34, may further include:
and step 35, transmitting the uplink data packet to a server in a non-5G network through the UPF, and acquiring corresponding slice information or service quality by a transmission device between the UPF and the server according to a preset field value of the header of the uplink data packet. Thereby realizing the service quality guarantee of the session between different networks.
In an optional embodiment of the present invention, when the client determines the preset field value of the header of the uplink data packet, the method may further include:
and the terminal verifies the preset field value of the head of the uplink data packet according to the corresponding relation table of the slice information of the session or the service quality requirement of the service flow and the preset field value of the head of the data packet, and if the verification fails, the preset field value of the head of the uplink data packet is corrected or deleted. Therefore, the value of the preset field is ensured to be correct, and the service quality of the session between different networks is further ensured.
In an optional embodiment of the present invention, the optional data transmission method, based on the steps 31 to 34, may further include:
step 35, receiving a downlink data packet sent by the server through a slice corresponding to the slice information or according to a quality of service requirement, where a preset field value of a header of the downlink data packet is determined by the server according to the slice information of the current session or the quality of service requirement of the service flow or a preset field value of a header of an uplink data packet.
In the above embodiment of the present invention, optionally, the downlink data packet and the uplink data packet are both IP data packets, and the preset field value of the header of the downlink data packet and the preset field value of the header of the uplink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits. The IP data packet may be an IPv4 data packet or an IPv6 data packet; here, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
The above embodiment of the present invention is directed to a client or a terminal of an uplink data packet, and determines a specific field value of a data packet header, such as an IP packet header DCSP value and an extension bit thereof, in the transmitted uplink data packet according to a service QoS requirement of a session, slice information, or a specific field value (such as an IP packet header DCSP value and an extension bit thereof) of a downlink data packet header. The server determines the specific field value of the downlink data packet header, such as the DCSP value of the IP packet header and the extension bit thereof, according to the QoS requirement of the session or the specific field value of the uplink data packet header (such as the DCSP value of the IP packet header and the extension bit thereof). Thereby ensuring that the value of the preset field is correct and further ensuring the service quality of the session between different networks
The following describes the implementation process of the above embodiment with reference to a specific flow:
as shown in fig. 4, the uplink and downlink data transmission flow is as follows:
And step 3, the client or the UE determines the specific field value of the data packet header in the sent uplink data packet according to the service QoS requirement of the session, the slice information or the specific field value (such as the DCSP value and the extension bit of the IP packet header) of the downlink data packet header, such as the DCSP value and the extension bit of the IP packet header.
And step 4, the uplink data packet provides service guarantee through the slice S-NSSAI x or specific QoS in the 5G network and is sent to the UPF from the UE.
And 5, transmitting the uplink data packet between the UPF and the server in the non-5G network, wherein the transmission equipment such as a router provides corresponding service guarantee for the uplink data packet according to the indication of the specific field value (such as the DCSP value of the IP header) of the data header.
And 6, aiming at the downlink data packet, the server determines the specific field value of the downlink data packet header, such as the DCSP value of the IP packet header and the extension bit thereof, according to the service QoS requirement of the session or the specific field value (such as the DCSP value of the IP packet header and the extension bit thereof) of the uplink data packet header.
And step 7, the downlink data packet provides service guarantee through the slice S-NSSAI x or specific QoS in the 5G network and is sent to the UE from the UPF.
In steps 3 and 6, a DSCP value, such as DSCP ═ x, is used to identify a value of the DSCP field, and if the length of bits reserved in the DSCP field cannot satisfy the indication of slice information, slice information may be indicated by the DSCP field and extension bits together, where the extension bits, such as the OPTION field, identify specific slice information by the DSCP field and the OPTION field together, and the slice information may be determined by the currently defined S-NSSAI (SST + SD) identifier. Wherein the field value for identifying the specific slice information may be encrypted or integrity protected using an encryption or integrity protection algorithm negotiated in advance by the service provider and the operator.
If the IP packet is an IPV4 data packet, the format of the IPV4 header is as shown in fig. 5 and 6, the first three bits of the TOS bit of the IPV4 header are IP Precedence, and these three bits can be divided into eight priorities, that is: an IP priority field, which may be applied to flow classification, with a larger value indicating a higher priority. IP priority has eight services that can be marked, with the following types of applications: 7: reserving; 6: reserving; 5: voice; 4: video conferencing; 3: a call signal; 2: high priority data; 1: medium priority data; 0: best effort data;
that is, the original 3-bit IP priority field can only be divided into eight service priorities, which is sufficient for single service type and low traffic. However, when the network is actually deployed, eight priorities are far from sufficient, and thus TOS is newly defined, the first six bits are defined as DSCP (Differentiated Services Code Point), and the last two bits are reserved (the later definition can be used for ECN). It prioritizes by encoding values using used 6 bits and unused 2 bits in the class of service TOS flag byte of each packet IP header. The DSCP uses 6 bits, and the value range of the DSCP is 0-63.
The determination of the DSCP value and its extension bit may be determined by a service client (e.g. APP) or by a UE. In case of service client (e.g. APP) determination, the UE may also perform verification modification according to specific situations.
The embodiment of the invention can ensure the service quality of the session between different networks by determining the mapping relation between the service QoS requirement of the session and the specific fields of the slice information and the data packet header.
As shown in fig. 7, an embodiment of the present invention further provides a data transmission method applied to a user plane function UPF, where the method includes:
and step 74, transmitting the uplink data packet.
In this embodiment, the UPF determines a preset field value of a header of an uplink data packet according to a mapping relationship negotiated by the terminal, the UPF and the server, a slice of a current session, or service quality, or a preset field value of a packet of a received downlink data packet, where the preset field value may be a preset field of a header of an IP data packet; the service quality assurance of the session between different networks is realized by determining the slice of the session or the mapping relation between the service quality QoS and the specific field of the data packet header.
In an alternative embodiment of the present invention, the step 72 may include:
and the receiving terminal determines slice information of the current session or the service quality requirement of the service flow in the session establishing process, and transmits an uplink data packet through a slice corresponding to the slice information in the 5G network or according to the service quality.
In an alternative embodiment of the present invention, step 74 may comprise:
and transmitting the uplink data packet to a server of a non-5G network, wherein the transmission equipment between the UPF and the server acquires corresponding slice information or service quality according to a preset field value of the header of the uplink data packet. Thereby realizing the service quality guarantee of the session between different networks (5G network and non-5G network).
In an optional embodiment of the present invention, on the basis of steps 71 to 74, the data transmission method may further include:
step 75, receiving a downlink data packet sent by a server;
step 76, determining a preset field value of a packet header of a downlink data packet according to the slice information of the session or the service quality requirement;
and 77, transmitting the downlink data packet to the terminal.
In an optional embodiment of the present invention, the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI. The specific IP packet format is shown in fig. 5 and 6.
In an optional embodiment of the present invention, the data transmission method may further include:
and for the uplink data packet or the downlink data packet which is not the UPF and determines the specific field value of the data packet header, the UPF verifies the specific field value of the uplink data packet or the downlink data packet header according to the maintained corresponding relation table of the slice information of the session or the service quality requirement of the service flow and the preset field value of the data packet header, and if the verification fails, the preset field value in the uplink data packet or the downlink data packet header is corrected or deleted.
In the following, the implementation of the UPF is described with reference to the flow shown in fig. 8, and this embodiment determines specific field values of a data packet header, such as a DCSP value of an IP packet header and an extension bit thereof, in a sent uplink data packet according to slice information or a service QoS requirement of a session by the UPF. The server determines the specific field value of the downlink data packet header, such as the DCSP value of the IP packet header and the extension bit thereof, according to the QoS requirement of the session or the specific field value of the uplink data packet header (such as the DCSP value of the IP packet header and the extension bit thereof). The method specifically comprises the following steps:
and step 0, negotiating the mapping relation between the service QoS requirement of the session and the specific field value of the data packet header, such as the DCSP value of the IP packet header and the extension bit thereof, in advance at a Client (Client), a terminal (UE), a User Plane Function (UPF) and a Server (Server). The transmission equipment between the UPF and the Server determines a forwarding strategy in advance according to the specific field value of the data packet header.
And step 3, the uplink data packet provides service guarantee through the slice S-NSSAI x or specific QoS in the 5G network and is sent to the UPF from the UE.
And step 4, the UPF determines the specific field value of the data packet header, such as the DCSP value of the IP packet header and the extension bit thereof, according to the slice information of the session or the QoS requirement of the service flow.
And 5, transmitting the uplink data packet between the UPF and the server in the non-5G network, wherein the transmission equipment such as a router provides corresponding service guarantee for the uplink data packet according to the indication of the specific field value (such as the DCSP value of the IP header) of the data header.
And 6, aiming at the downlink data packet, the server determines the specific field value of the downlink data packet header, such as the DCSP value of the IP packet header and the extension bit thereof, according to the service QoS requirement of the session or the specific field value (such as the DCSP value of the IP packet header and the extension bit thereof) of the uplink data packet header.
And step 7, the downlink data packet provides service guarantee through the slice S-NSSAI x or specific QoS in the 5G network and is sent to the UE from the UPF.
In steps 4 and 6, a DSCP value, for example, DSCP ═ x is used to identify a value of the DSCP field, if the length of bits reserved in the DSCP field cannot satisfy the representation of slice information, slice information may be represented by the DSCP field and extension bits together, where the extension bits, such as the OPTION field, identify specific slice information together by the DSCP field and the OPTION field, and the slice information may be determined by the currently defined S-NSSAI (SST + SD) identifier. Wherein the field value for identifying the specific slice information may be encrypted or integrity protected using an encryption or integrity protection algorithm negotiated in advance by the service provider and the operator.
As shown in fig. 9, the UPF may verify the DCSP value of the IP header and its extension bit with respect to a header specific field value of the uplink and downlink packets corresponding to the slice or the qos. If the verification is not passed, the specific field value of the packet header in the data packet is corrected or deleted. The flow of the UPF verifying the specific field of the packet header is as follows:
and step 0, negotiating the mapping relation between the service QoS requirement of the session and the specific field value of the data packet header, such as the DCSP value of the IP packet header and the extension bit thereof, in advance at a Client (Client), a terminal (UE), a User Plane Function (UPF) and a Server (Server). The transmission equipment between the UPF and the Server determines a forwarding strategy in advance according to a specific field value of a data packet header.
And step 3, the UPF maintains the slice information of the session or the QoS requirement of the service flow and the specific field value of the data packet header, such as a DCSP value of the IP packet header and an extension bit corresponding relation table.
And 4, transmitting the uplink and downlink data packets between the client and the server through a 3GPP 5G network.
And 5, for the data packet which is not the UPF and determines the specific field value of the data packet header, the UPF verifies the specific field value of the data packet header according to the maintained slice information of the session or the corresponding relation table of the QoS requirement of the service flow and the specific field value of the data packet header. If the verification is not passed, the specific field value of the packet header in the data packet is corrected or deleted.
In the above embodiments of the present invention, a Software Defined Network (SDN) network is established between the UPF and the server. And interacting with the SDN controller by a network function unit (such as SMF, UPF, PCF and the like) according to the slice information or the service QoS requirement of the session, and sending data routing forwarding strategy information to the SDN controller for the SDN controller to generate a basis for a forwarding control decision of the data of the lower layer router. The routing forwarding policy information includes data packet identification information, such as an IP triple, and corresponding QoS requirement information.
The above embodiment of the present invention realizes the service quality assurance of the session between different networks by determining the slice of the session or the mapping relationship between the QoS and the specific field of the packet header.
As shown in fig. 10, an embodiment of the present invention further provides a data transmission method applied to a server, where the method includes:
and 103, transmitting the downlink data packet.
In an optional embodiment of the present invention, the data transmission method may further include:
and 104, receiving an uplink data packet transmitted by a user plane function UPF in the 5G network. It should be noted that this step may be before step 101, and of course, may also be after step 103.
In an optional embodiment of the present invention, the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
The implementation flows in all the embodiments are applicable to the embodiment, and the same technical effect can be achieved.
Corresponding to the method of the terminal or the client side shown in fig. 3, an embodiment of the present invention further provides a terminal, including:
the acquisition module is used for acquiring the mapping relation between the session slice information or the service quality requirement and a preset field value of a data packet header;
the determining module is used for determining the slice information of the current session or the service quality requirement of the service flow in the session establishing process; determining a preset field value of an uplink data packet header according to the mapping relation, the slice information of the session, the service quality requirement or a preset field value of a downlink data packet header;
and the transmission module is used for transmitting the uplink data packet.
Optionally, the transmission module is specifically configured to: and in the 5G network, transmitting the uplink data packet to a user plane function UPF through the slice corresponding to the slice information or according to the service quality information.
The transmission module is specifically configured to: and transmitting the uplink data packet to a server in a non-5G network through the UPF, and acquiring corresponding slice information or service quality by transmission equipment between the UPF and the server according to a preset field value of the packet header of the uplink data packet.
When a client determines a preset field value of an uplink data packet header, the terminal verifies the preset field value of the uplink data packet header according to mapping relation between session slice information or service quality requirements of service flows and the preset field value of the data packet header, and if the verification fails, the preset field value of the uplink data packet header is corrected or deleted.
The transmission module is further configured to receive a downlink data packet sent by a server through a slice corresponding to the slice information or according to a quality of service requirement, where a preset field value of a header of the downlink data packet is determined by the server according to the slice information of a current session or the quality of service requirement of a service flow or a preset field value of a header of an uplink data packet.
Optionally, the downlink data packet and the uplink data packet are both IP data packets, and the preset field value of the header of the downlink data packet and the preset field value of the header of the uplink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
It should be noted that all the implementation manners in the above method embodiments are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
The embodiment of the present invention further provides a user plane functional entity, including:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement and a preset field value of a data packet header;
the receiving module is used for receiving an uplink data packet which is sent by a slice corresponding to the slice information or according to the service quality;
the determining module is used for determining a preset field value of the head of the uplink data packet according to the mapping relation and the slice information or the service quality requirement of the current session;
and the transmission module is used for transmitting the uplink data packet.
Optionally, the receiving module is specifically configured to determine slice information of a current session or a service quality requirement of a service flow during a session establishment process of the terminal, and send an uplink data packet through a slice corresponding to the slice information in the 5G network or according to the service quality.
Optionally, the transmission module is specifically configured to transmit the uplink data packet to a server in a non-5G network, and a transmission device between the UPF and the server acquires corresponding slice information or service quality according to a preset field value of a header of the uplink data packet.
Optionally, the transmission module is further configured to receive a downlink data packet sent by the server; determining a preset field value of a downlink data packet header according to the slice information or the service quality requirement of the session;
and transmitting the downlink data packet to a terminal.
Optionally, the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
Optionally, for an uplink data packet or a downlink data packet that is not a UPF that determines a specific field value of a data packet header, the UPF verifies the specific field value of the uplink data packet or the downlink data packet header according to a mapping relationship between maintained slice information of a session or a service quality requirement of a service flow and a preset field value of the data packet header, and if the verification fails, corrects or deletes the preset field value in the uplink data packet or the downlink data packet header.
It should be noted that all the implementation manners in the above method embodiments are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
An embodiment of the present invention further provides a server, including:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement and a preset field value of a data packet header;
the determining module is used for determining a preset field value of a downlink data packet header according to the slice information of the current session, the service quality requirement or the preset field value of the uplink data packet header;
and the transmission module is used for transmitting the downlink data packet.
Optionally, the transmission module is specifically configured to receive an uplink data packet transmitted by a user plane function UPF in the 5G network.
Optionally, the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
Optionally, the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
It should be noted that all the implementation manners in the above method embodiments are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above. All the implementation manners in the above method embodiment are applicable to this embodiment, and the same technical effect can be achieved.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above. All the implementation manners in the above method embodiment are applicable to this embodiment, and the same technical effect can be achieved.
The scheme of the invention realizes the service quality guarantee of the session between different networks by determining the slice of the session or the mapping relation between the QoS and the specific field of the data packet header.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
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 embodiments provided in the present invention, it should be understood that the disclosed apparatus and method 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.
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 invention 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 functions, if implemented in the form of software functional units 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 invention may be embodied in the form of 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 invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
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 (23)
1. A data transmission method is applied to a terminal or a client, and comprises the following steps:
acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
in the session establishing process, determining the slice information of the current session or the service quality requirement of the service flow;
determining a preset field value of an uplink data packet header according to the mapping relation, the slice information of the session, the service quality requirement or a preset field value of a downlink data packet header;
and transmitting the uplink data packet.
2. The data transmission method according to claim 1, wherein transmitting the uplink data packet comprises:
and in the 5G network, transmitting the uplink data packet to a user plane function UPF through the slice corresponding to the slice information or according to the service quality information.
3. The data transmission method according to claim 2, further comprising:
and transmitting the uplink data packet to a server in a non-5G network through the UPF, and acquiring corresponding slice information or service quality by transmission equipment between the UPF and the server according to a preset field value of the packet header of the uplink data packet.
4. The data transmission method according to claim 1, wherein when the client determines a preset field value of the upstream packet header, the method further comprises:
and the terminal verifies the preset field value of the upstream data packet header according to the mapping relation between the service quality requirement of the session or the service flow and the preset field value of the data packet header, and if the verification fails, the preset field value of the upstream data packet header is corrected or deleted.
5. The data transmission method according to claim 1, further comprising:
and receiving a downlink data packet sent by the server through a slice corresponding to the slice information or according to a service quality requirement, wherein a preset field value of a header of the downlink data packet is determined by the server according to the slice information of the current session or the service quality requirement of the service flow or a preset field value of a header of an uplink data packet.
6. The data transmission method according to any one of claims 1 to 5, wherein the downlink data packet and the uplink data packet are both IP data packets, and the preset field value of the header of the downlink data packet and the preset field value of the header of the uplink data packet each include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
7. The data transmission method according to claim 6, wherein the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection side information S-NSSAI.
8. A data transmission method, applied to a user plane function UPF, the method comprising:
acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the method comprises the steps that a receiving terminal determines slice information of a current session or service quality requirements of a service flow in a session establishing process, and transmits an uplink data packet through a slice corresponding to the slice information or according to service quality;
determining a preset field value of the head of the uplink data packet according to the mapping relation and the slice information or the service quality requirement of the current session;
and transmitting the uplink data packet.
9. The data transmission method according to claim 8, wherein the receiving terminal determines slice information of a current session or a service quality requirement of a service flow during a session establishment process, and sends an uplink data packet through a slice corresponding to the slice information or according to the service quality, including:
and the receiving terminal determines slice information of the current session or the service quality requirement of the service flow in the session establishing process, and transmits an uplink data packet through a slice corresponding to the slice information in the 5G network or according to the service quality.
10. The data transmission method according to claim 8, wherein transmitting the uplink data packet comprises:
and transmitting the uplink data packet to a server of a non-5G network, wherein the transmission equipment between the UPF and the server acquires corresponding slice information or service quality according to a preset field value of the header of the uplink data packet.
11. The data transmission method according to claim 10, further comprising:
receiving a downlink data packet sent by a server;
determining a preset field value of a downlink data packet header according to the slice information or the service quality requirement of the session;
and transmitting the downlink data packet to a terminal.
12. The data transmission method according to claim 11, wherein the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
13. The data transmission method according to claim 12, wherein the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection side information S-NSSAI.
14. The data transmission method according to claim 8, further comprising:
and for the uplink data packet or the downlink data packet which is not the UPF and determines the specific field value of the data packet header, the UPF verifies the specific field value of the uplink data packet or the downlink data packet header according to the mapping relation between the service quality requirement of the session or the service flow and the preset field value of the data packet header, and if the verification fails, the preset field value in the uplink data packet or the downlink data packet header is corrected or deleted.
15. A data transmission method, applied to a server, the method comprising:
acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
determining a preset field value of a downlink data packet header according to the slice information of the current session or the service quality requirement or the preset field value of the uplink data packet header;
and transmitting the downlink data packet.
16. The data transmission method according to claim 15, further comprising:
and receiving an uplink data packet transmitted by a user plane function UPF in the 5G network.
17. The data transmission method according to claim 16, wherein the uplink data packet and the downlink data packet are both IP data packets, and the preset field value of the header of the uplink data packet and the preset field value of the header of the downlink data packet both include: a value of a differentiated services code point, DSCP, field or the DSCP field and its extension bits.
18. The data transmission method according to claim 17, wherein the extension bit is indicated by an OPTION field, and the slice information is represented by single network slice selection assistance information S-NSSAI.
19. A terminal, comprising:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the determining module is used for determining the slice information of the current session or the service quality requirement of the service flow in the session establishing process; determining a preset field value of an uplink data packet header according to the mapping relation, the slice information of the session, the service quality requirement or a preset field value of a downlink data packet header;
and the transmission module is used for transmitting the uplink data packet.
20. A user plane functional entity, comprising:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the receiving module is used for receiving an uplink data packet which is sent by a slice corresponding to the slice information or according to the service quality;
the determining module is used for determining a preset field value of the head of the uplink data packet according to the mapping relation and the slice information or the service quality requirement of the current session;
and the transmission module is used for transmitting the uplink data packet.
21. A server, comprising:
the acquisition module is used for acquiring the mapping relation between the slice information or the service quality requirement of the session and a preset field value of a data packet header;
the determining module is used for determining a preset field value of a downlink data packet header according to the slice information of the current session, the service quality requirement or the preset field value of the uplink data packet header;
a transmission module for transmitting the downlink data packet
22. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any of claims 1 to 7 or 8 to 14 or any of claims 15 to 18.
23. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 7 or 8 to 14 or 15 to 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010315489.7A CN113543232A (en) | 2020-04-21 | 2020-04-21 | Data transmission method, terminal, user plane functional entity and server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010315489.7A CN113543232A (en) | 2020-04-21 | 2020-04-21 | Data transmission method, terminal, user plane functional entity and server |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113543232A true CN113543232A (en) | 2021-10-22 |
Family
ID=78093825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010315489.7A Pending CN113543232A (en) | 2020-04-21 | 2020-04-21 | Data transmission method, terminal, user plane functional entity and server |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113543232A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285787A (en) * | 2021-12-30 | 2022-04-05 | 中国电信股份有限公司 | Cross-user-plane forwarding method, system and computer-readable storage medium |
| WO2024021896A1 (en) * | 2022-07-25 | 2024-02-01 | 中兴通讯股份有限公司 | Data transmission method, slice relationship mapping method, electronic device, and medium |
-
2020
- 2020-04-21 CN CN202010315489.7A patent/CN113543232A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285787A (en) * | 2021-12-30 | 2022-04-05 | 中国电信股份有限公司 | Cross-user-plane forwarding method, system and computer-readable storage medium |
| CN114285787B (en) * | 2021-12-30 | 2023-07-14 | 中国电信股份有限公司 | Cross-user plane forwarding method, system and computer readable storage medium |
| WO2024021896A1 (en) * | 2022-07-25 | 2024-02-01 | 中兴通讯股份有限公司 | Data transmission method, slice relationship mapping method, electronic device, and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7984492B2 (en) | Methods and apparatus for policy enforcement in a wireless communication system | |
| Choyi et al. | Network slice selection, assignment and routing within 5G networks | |
| CN109314710B (en) | System and method for quality of service monitoring, policy enforcement and charging in a communication network | |
| CN109076399B (en) | Flexible QOS strategy for in-stream packet prioritization and data correlation | |
| CN111357309B (en) | Method and computing device for performing data integrity protection | |
| US11818585B2 (en) | Selection of a network slice instantiation for transmitting uplink packets | |
| CN112913212A (en) | Control of user plane functions with control plane-user plane separation | |
| US11909793B2 (en) | Method, user terminal, network node, and system for controlling transmission of media stream service, storage medium, and electronic device | |
| JP2004320159A (en) | Communication system and communication method | |
| WO2008136604A1 (en) | Network architecture for dynamically setting end-to-end quality of service (qos) in a broadband wireless communication system | |
| KR101546780B1 (en) | Apparatus and method for handling error for service flow modification in a broadband wireless communication network | |
| CN113993118B (en) | Data distribution method, device, equipment, functional entity and storage medium | |
| CN111200565B (en) | Information transmission method, terminal and network equipment | |
| WO2021139696A1 (en) | Method, apparatus and system for sending report information | |
| WO2019158219A1 (en) | Ran device and core network device for network slicing | |
| WO2014075359A1 (en) | Bandwidth adjustment method, device and system | |
| CN111869310A (en) | Method and system for performing small data fast path communication | |
| CN113543232A (en) | Data transmission method, terminal, user plane functional entity and server | |
| CN112099871B (en) | Service quality configuration method and device | |
| CN114128227B (en) | Transmitting MTNC-ID on SRv 6-enabled data plane to enable 5G transmission | |
| EP1978682A1 (en) | QoS CONTROL METHOD AND SYSTEM | |
| EP4005166A1 (en) | Traffic monitoring in a network node | |
| JP2009105949A (en) | TERMINAL CAPABLE OF EXECUTING QoS CONTROL | |
| CN112153683B (en) | Parameter dynamic configuration method, terminal and session management functional entity | |
| CN110876160A (en) | Resource transmission control method and device based on multimode base station |
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 |