WO2023001218A1

WO2023001218A1 - Data transmission method and apparatus, access point, and network side device

Info

Publication number: WO2023001218A1
Application number: PCT/CN2022/106953
Authority: WO
Inventors: 曹春燕
Original assignee: 展讯半导体(南京)有限公司
Priority date: 2021-07-23
Filing date: 2022-07-21
Publication date: 2023-01-26
Also published as: CN115696449A

Abstract

A data transmission method and apparatus, an access point, and a network side device. The method comprises: receiving overload indication information, where the overload indication information indicates that a wireless core network is overloaded and all or some of the quality of service data streams need to be offloaded; and offloading all or some of the quality of service data streams according to the overload indication information. The present invention can reduce the load of the wireless core network, effectively ensure the communication effect of a user, and improve the user experience.

Description

Data transmission method and device, access point, network side equipment

This application claims the priority of the Chinese patent application with the application number 202110839727.9 and the title of the invention "data transmission method and device, access point, network side equipment" submitted to the China Patent Office on July 23, 2021, the entire content of which is passed References are incorporated in this application.

technical field

The present invention relates to the field of communication technology, in particular to a data transmission method and device, an access point, and network side equipment.

Background technique

In the face of the insufficient indoor coverage of some mobile communication technologies such as the fifth generation (5G), the introduction of indoor small base stations or access points (Access Point, AP) and other methods are also being considered to enhance coverage. 5G indoor small base stations or access points can be collectively referred to as 5G APs. 5G APs can be configured by operators or purchased by users. The deployed home broadband is used as the backhaul link, and the power supply in the later stage is borne by users.

In the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) technical report 22.858 home 5G enhancement research protocol, 5G AP can be divided into enhanced home gateway (Evolved Residential Gateway, eRG) and home wireless access point (Premises Radio Access Station, PRAS) two parts, eRG can be connected to the 5G wireless core network (5G core network, 5GC), and can also inherit part of the wireless core network functions. The PRAS can have complete base station functions, or only part of the base station functions. For some indoor environments, such as office areas or large family residences, multiple PRASs need to be deployed simultaneously to meet the overall coverage requirements. Multiple indoor PRASs are connected to the network through a unified eRG.

In the communication system, UE can connect to the data network through 5GC to provide users with services such as voice and data. However, in the prior art, when the 5GC is overloaded (Overload), the base station will reject the RRC connection establishment of some service types, so as to reduce the load of the wireless core network. Specifically, denying access to users of a certain service type seriously affects the communication effect of some users in an overloaded state, sacrificing the communication experience of these users.

Contents of the invention

The technical problem solved by the present invention is to provide a data transmission method and device, access point, and network side equipment, which can reduce the load of the wireless core network, effectively guarantee the communication effect of users, and improve user experience.

In order to solve the above technical problems, an embodiment of the present invention provides a data transmission method, including: receiving overload indication information, the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the quality of service data stream needs to be offloaded; according to the The overload indication information offloads all or part of the QoS data streams.

In the embodiment of the present invention, by setting to receive overload indication information and unloading all or part of the quality of service data streams according to the overload indication information, when the wireless core network is overloaded, by unloading all or part of the quality of service data streams , reducing the load of the wireless core network. Therefore, while reducing the load of the wireless core network, only some services are delayed for a short time, which effectively guarantees the user's communication effect and improves the user experience.

Optionally, the overload indication information includes overload start information.

Optionally, the overload start information includes: immediate start indication information, used to indicate immediate unloading of all or part of the QoS data streams; or, delayed start indication information, used to indicate that after a first preset period of time offloading all or part of said quality of service data streams.

Optionally, the overload indication information includes identification information of the QoS data flow that needs to be offloaded.

Optionally, the overload indication information instructs to offload the QoS data flow with a specified priority.

Optionally, the data transmission method further includes: receiving overload recovery indication information, where the overload recovery indication information is used to indicate that all or part of the QoS data flow resumes transmission via the wireless core network.

Optionally, the overload recovery indication information includes: immediate recovery indication information, used to indicate immediate recovery of transmission via the wireless core network; or delayed recovery indication information, used to indicate recovery of transmission via the wireless core network after a second preset time. Core network transmission.

Optionally, the overload recovery information includes identification information of offloaded QoS data streams that need to be recovered.

Optionally, the overload recovery information instructs to recover the offloaded QoS data flow with a specified priority.

Optionally, before unloading all or part of the QoS data streams according to the overload indication information, the data transmission method further includes: receiving a first message, the first message including unloading capability indication information, the The offload capability indication information is used to indicate the quality of service data flow that can be offloaded; offloading all or part of the quality of service data flow according to the overload indication information includes: according to the overload indication information and the offload capability indication information, offloading The QoS data stream capable of being offloaded.

Optionally, the data transmission method further includes: transmitting the offloaded QoS data stream via a wired path.

In order to solve the above technical problems, an embodiment of the present invention provides a data transmission method, including: sending overload indication information, the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the quality of service data flow needs to be offloaded.

In the embodiment of the present invention, by setting the step of sending the overload indication information, so that the access point unloads all or part of the QoS data flow according to the overload indication information, when the wireless core network is overloaded, by offloading the All or part of the QoS data flow, reducing the load on the wireless core network. Therefore, while reducing the load of the wireless core network, only some services are delayed for a short time, which effectively guarantees the user's communication effect and improves the user experience.

Optionally, the overload indication information instructs to offload QoS data streams with specified priority.

Optionally, the data transmission method further includes: sending overload recovery indication information, where the overload recovery indication information is used to indicate that all or part of the QoS data flow resumes transmission via the wireless core network.

Optionally, the data transmission method further includes: sending a first message, where the first message includes offload capability indication information, and the offload capability indication information is used to indicate QoS data streams that can be offloaded.

In order to solve the above technical problems, an embodiment of the present invention provides a communication device, including a communication module and a processing module; wherein: the communication module is used to receive overload indication information, and the overload indication information is used to indicate that the wireless core network is overloaded. Unloading all or part of the QoS data streams; the processing module is configured to unload all or part of the QoS data streams according to the overload indication information.

In order to solve the above technical problems, an embodiment of the present invention provides a communication device, including a communication module; wherein: the communication module is used to send overload indication information, and the overload indication information is used to indicate that the wireless core network is overloaded, and it is necessary to unload all or Partial quality of service data flow.

In order to solve the above technical problem, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of the above data transmission method are executed.

In order to solve the above technical problems, an embodiment of the present invention provides an access point, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor runs the computer program When performing the steps of the above data transmission method.

Optionally, the access point is selected from: enhanced home gateway and home wireless access point.

In order to solve the above technical problems, an embodiment of the present invention provides a network side device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor runs the computer program When performing the steps of the above data transmission method.

Compared with the prior art, the technical solutions of the embodiments of the present invention have the following beneficial effects:

Further, the overload indication information includes overload start information, which can enable the access point to determine when the QoS data flow needs to be offloaded according to the instruction of the wireless core network, and then execute it, effectively improving the accuracy and reliability of the offloading.

Further, the overload indication information includes the identification information of the QoS data streams that need to be offloaded, or the overload indication information indicates that the QoS data streams with a specified priority are unloaded, so that the access point can determine which streams need to be offloaded according to the instructions of the wireless core network. Identify the quality of service data flow, or determine which priority quality of service data flow needs to be offloaded, and then execute, effectively improving the accuracy and reliability of offloading.

Further, receiving overload recovery indication information, the overload recovery indication information is used to indicate that all or part of the quality of service data flow resumes transmission via the wireless core network, so that the wireless core network access path can be returned in time after the wireless core network overload is recovered , effectively reducing the impact on the user's access service.

Further, according to the overload recovery indication information, the access point can determine when transmission via the wireless core network needs to be resumed according to the indication of the wireless core network, and then perform the execution, effectively improving the accuracy and reliability of recovery.

Further, the overload recovery information includes the identification information of the offloaded QoS data flow that needs to be restored or the overload recovery information indicates to restore the offloaded QoS data flow with a specified priority, which can make the access point according to the wireless core According to the instructions of the network, it is determined which identified quality of service data flows need to be restored, or which priority quality of service data flows need to be restored, and then executed, effectively improving the accuracy and reliability of restoration.

Further, before unloading all or part of the QoS data streams according to the overload indication information, receiving a first message, the first message includes offload capability indication information, and the offload capability indication information is used to indicate that it can be offloaded quality of service data streams, and then according to the overload indication information and the offload capability indication information, the offloaded quality of service data streams that can be offloaded can be realized, so that the wireless core network can indicate whether offloading is required for each quality of service data stream, The accuracy of the indication is effectively improved, and the access point determines whether to offload the QoS data flow according to the indication of the wireless core network, and then executes, thereby effectively improving the accuracy and reliability of the offloading.

Description of drawings

FIG. 1 is a schematic diagram of a working scenario of a data transmission method in the prior art;

Fig. 2 is a flow chart of a data transmission method in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a working scene of a data transmission method in an embodiment of the present invention;

FIG. 4 is a data flow diagram of another data transmission method in an embodiment of the present invention;

Fig. 5 is a data flow diagram of another data transmission method in an embodiment of the present invention;

6 is a schematic structural diagram of a data transmission device in an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of an access point in an embodiment of the present invention.

detailed description

In the existing technology, 5G AP can be divided into two parts, eRG and PRAS. The eRG can be connected to 5GC, and can also inherit some functions of the wireless core network. The PRAS can have complete base station functions, or only part of the base station functions. For some indoor environments, such as office areas or large family residences, multiple PRASs need to be deployed simultaneously to meet the overall coverage requirements. Multiple indoor PRASs are connected to the network through a unified eRG.

Referring to FIG. 1 , FIG. 1 is a schematic diagram of a working scene of a data transmission method in the prior art.

One or more protocol data unit (Protocol Data Unit, PDU) sessions are established between each UE and the 5GC. In a PDU session, the quality of service data flow (QoS flow) is the smallest granularity in the PDU session, and one PDU session can contain one or more quality of service data flows.

Specifically, the UE requests the 5GC to establish one or more PDU sessions according to service requirements. After receiving the PDU session establishment request, the 5GC sends a PDU session resource establishment request (PDU SESSION RESOURCE SETUP REQUEST) message to the base station (gNB), requesting the gNB to The communication interface Uu and the communication interface NG-U allocate resources for one or more PDU sessions and corresponding QoS data streams, and set corresponding DRBs for corresponding UEs. The PDU session resource establishment request message includes the gNB configuration information required by the gNB node to establish the PDU session.

For each quality of service data flow in the PDU session, there can be two parameters: priority level and pre-emption indicators, and the gNB allocates resources according to the priority and pre-emption indicators corresponding to the quality of service data flow. There may be two parameters in the preemption indication of the quality of service data flow: 1) Pre-emption capability information element (Pre-emption Capability IE), indicating whether the quality of service data flow has preemption capability, such as "may trigger pre-emption ", "shall not trigger pre-emption"; 2) pre-emption information element (Pre-emption Vulnerability IE), indicating whether the quality of service data flow can be preempted, such as "allowed to be preempted (pre-emptable) ", "Prohibited from being preempted (not pre-emptable)".

The preemption principle is arranged in ascending order of priority, that is, high-priority QoS data streams preempt the resources of low-priority QoS data streams. In addition, QoS data streams belonging to the same UE or different UEs can be preempted.

When the wireless resources on the wireless access network side are insufficient, the gNB will trigger the preemption process, and the QoS data stream marked as "may trigger pre-emption" with preemption capability will preempt the low priority marked "pre-emptable" that can be preempted The wireless resources of the data flow with the lowest priority quality of service are forcibly released.

In the existing 3GPP protocol 38.413, when the core network is overloaded, the network element access and mobility management function (Access and Mobility Management Function, AMF) of the core network will send an overload start ( Overload Start) information, notify the base station to reduce the load on the relevant AMF, and the base station that receives the overload start information believes that the AMF is in an overloaded state.

It should be pointed out that, in an existing specific implementation manner, the AMF overload response information element (AMF Overload Response IE) in the overload start information includes an overload execution information element (Overload Action IE), wherein the overload execution information element Can be set to:

1) Refuse to establish a Radio Resource Control (RRC) connection for non-emergency mobile data transmission, such as the reason for RRC establishment is "Mobile Originated–data (mo-data)", "Short message initiated by the terminal" (mo-SMS)", "Video Call initiated by terminal (mo-VideoCall)" and "Voice call initiated by terminal (mo-VoiceCall)".

2) Reject RRC connection establishment for signaling, such as RRC establishment reasons are "mo-data", "mo-SMS", "terminal initiates signaling (mo-signaling)", "mo-VideoCall" and "mo- VoiceCall" business.

3) Only RRC connections for emergency calls and mobile terminal services are allowed to be established, for example, the reasons for RRC establishment are "emergency calls (emergency)" and "Mobile Terminated–Access (mt-Access)" services.

4) Only RRC connections for high-priority sessions and mobile terminal services are allowed to be established, such as the reason for RRC establishment is "high priority session (highPriorityAccess)", "mobile positioning system priority session (mps-Priority Access)", " Modulation and coding strategy priority session (mcs-Priority Access)" and "Mobile Terminated–Access (mt-Access)" or "highPriorityAccess", "terminal initiated abnormal data (mo-ExceptionData)" services.

After receiving the overload start information, the base station will reject the RRC connection establishment of some service types according to the overload execution information element in the overload start information, so as to reduce the load of the AMF.

When the wireless core network recovers from overload, AMF will send overload recovery information to gNB. After receiving the overload stop information, gNB will lift the restrictions on accessing the network for specific types of service users.

The inventors of the present invention have found through research that, in the above-mentioned prior art, the base station acts as the executive body to reject the user access of a certain service type, and the object of the rejection is the user, which leads to a significant increase in the user experience of the rejected user. decline.

In the embodiment of the present invention, by setting the access point to receive the overload indication information and unload all or part of the QoS data streams by the access point according to the overload indication information, when the wireless core network is overloaded, by offloading the All or part of the QoS data flow, reducing the load on the wireless core network. Therefore, while reducing the load of the wireless core network, only some services are delayed for a short time, which effectively guarantees the user's communication effect and improves the user experience.

In order to make the above objects, features and beneficial effects of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 2, FIG. 2 is a flowchart of a data transmission method in an embodiment of the present invention. The data transmission method may be used in an access point, and may also include steps S21 to S22:

Step S21: receiving overload indication information, the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the quality of service data flow needs to be offloaded;

Step S22: Unload all or part of the QoS data streams according to the overload indication information.

It can be understood that, in a specific implementation, the method may be implemented in the form of a software program, and the software program runs in a processor integrated in a chip or a chip module.

In the specific implementation of step S21, the quality of service data stream may be transmitted to the data network via the wireless core network first, and then when the wireless core network is overloaded, the access point learns that the wireless core network is overloaded by receiving overload indication information. Overload, requiring offloading of all or part of the QoS traffic.

Further, the overload indication information may include overload start (Overload Start) information.

In the embodiment of the present invention, the overload indication information includes overload start information, which can enable the access point to determine when the quality of service data flow needs to be offloaded according to the indication of the wireless core network, and then execute it, effectively improving the accuracy and reliability of offloading sex.

Furthermore, the overload start information may include: immediate start indication information, used to indicate immediate unloading of all or part of the QoS data streams; or, delayed start indication information, used to indicate that after a first preset time period Then all or part of the QoS data streams are offloaded.

In the embodiment of the present invention, the access point can determine to offload the QoS data flow immediately according to the instruction of the wireless core network, or to offload the QoS data flow after a first preset period of time, and then execute it, further effectively improving the accuracy of offloading. sex and reliability.

Further, in a specific implementation manner of the embodiment of the present invention, the overload indication information may include identification information of the QoS data flow that needs to be offloaded.

Specifically, in a PDU session, a quality of service data flow can be uniquely identified by a quality of service data flow identifier (QoS flow identifier, QFI), that is, the quality of service data flow can be uniquely determined through the QFI.

In another specific implementation manner of the embodiment of the present invention, the overload indication information instructs to offload the QoS data flow with a specified priority.

In a specific application, regarding priority level confirmation, the range of priority that can be set is 1 to 15, wherein 1 is the highest priority. As a non-limiting implementation, priorities 1-8 may only be assigned to resources used for priority processing services; priorities 9-15 may be assigned to resources authorized by the home network, and this assignment may apply Roaming on the UE.

By specifying the priority, the quality of service data flow of a certain priority can be unloaded as a whole. Compared with indicating the quality of service data flow that needs to be offloaded one by one, the way of specifying the priority is used to indicate, and less information can be used to indicate Offload more QoS data streams, effectively saving signaling overhead.

In the embodiment of the present invention, the overload indication information includes the identification information of the quality of service data flow that needs to be offloaded or the overload indication information indicates that the quality of service data flow with a specified priority is unloaded, which can make the access point according to the wireless core network Instruct to determine which identified quality of service data flows need to be offloaded, or determine which priority quality of service data flows need to be offloaded, and then execute, effectively improving the accuracy and reliability of offloading.

In the specific implementation of step S22, the access point may offload all or part of the QoS data streams according to the overload indication information.

Further, the data transmission method may further include: transmitting the offloaded QoS data stream via a wired path.

Wherein, the wired path may be a concept opposite to the wireless path, for example, the wired path may be selected from: coaxial cable transmission and optical fiber transmission.

Specifically, it can be understood that when connecting to a data network through a mobile data connection, such as via mobile data Internet access, due to mobile data Internet access congestion, it is necessary to offload at least part of the quality of service data stream to a wired connection, such as through a broadband connection Internet transmission.

In a specific implementation, the access point may offload at least a part of the quality of service data flow, and connect the quality of service data flow to the data network through a wired path, so that when the wireless core network is overloaded, the quality of service data flow At least a part of them is accessed through a wired path, effectively maintaining this part of the quality of service data flow accessing the data network.

Referring to FIG. 3 , FIG. 3 is a schematic diagram of a working scene of a data transmission method in an embodiment of the present invention.

As shown by the dotted line in Figure 3, the enhanced home gateway 33, the first home wireless access point 32 and the second enhanced home gateway 36 form a 5G AP, and the first user terminal 31 and the second user terminal 32 are 5G For users under the AP, the first home wireless access point 32 is connected to the enhanced home gateway 33 . The first user terminal 31 can be connected to the wireless core network 34 via the first home wireless access point 32 and the enhanced home gateway 33 , and then can be connected to the data network 37 through the wireless core network 34 to obtain services.

The second user terminal 35 can be wired to the data network 37 through the second enhanced home gateway 36 , that is, access the data network 37 through a wired path, so as to obtain services.

As shown by the solid line in FIG. 3 , when the wireless core network 34 is overloaded with data, part or all of the QoS data flow can be offloaded, and the QoS data flow can be connected to the data network 37 through a wired path.

Further, the data transmission method may further include: receiving overload recovery indication information, where the overload recovery indication information is used to indicate that all or part of the quality of service data flow resumes transmission via the wireless core network.

In a specific implementation, when the wireless core network recovers from the overload state, the currently untransmitted QoS data flow can be restored to access the data network via the wireless core network, and the QoS data flow in the wired path can be restored. Some or all of the data streams are offloaded.

In the embodiment of the present invention, the overload recovery indication information is received, and the overload recovery indication information is used to indicate that all or part of the quality of service data flow resumes transmission via the wireless core network, so that after the wireless core network overload recovery, it can return to the wireless network in time. The core network access path effectively reduces the impact on user access services.

Further, the overload recovery indication information may include: immediate recovery indication information, used to indicate immediate recovery of transmission via the wireless core network; or delayed recovery indication information, used to indicate recovery of transmission via the wireless core network after a second preset time. Core network transmission.

In the embodiment of the present invention, according to the overload recovery instruction information, the access point can determine when transmission via the wireless core network needs to be resumed according to the instruction of the wireless core network, and then perform the execution, effectively improving the accuracy and reliability of recovery.

Further, in a specific implementation manner of the embodiment of the present invention, the overload recovery information may include identification information of the offloaded QoS data stream that needs to be recovered.

In another specific implementation manner of the embodiment of the present invention, the overload recovery information indicates to recover the offloaded QoS data flow with a specified priority.

As mentioned above, in a specific application, regarding priority level confirmation, the range of priority that can be set is 1 to 15, wherein 1 is the highest priority. As a non-limiting implementation, priorities 1-8 may only be assigned to resources used for priority handling services; priorities 9-15 may be assigned to resources authorized by the home network.

By specifying the priority, the unloaded quality of service data flow of a certain priority can be recovered. Compared with indicating the quality of service data flow that needs to be restored one by one, the way of specifying the priority is used to indicate, and less information can be used The volume indicates that more QoS data streams can be restored, effectively saving signaling overhead.

It should be pointed out that only a part of offloaded QoS data streams may be recovered. For example, after offloading the QoS data streams with priorities 1-8, only the QoS data streams with priorities 5-8 are restored.

In this embodiment of the present invention, the overload recovery information includes the identification information of the offloaded QoS data flow that needs to be restored or the overload recovery information indicates that the offloaded QoS data flow with a specified priority is restored, so that the receiving The entry point determines which identified QoS data flows need to be restored according to the instructions of the wireless core network, or determines which priority QoS data flows need to be restored, and then executes, effectively improving the accuracy and reliability of restoration.

Referring to FIG. 4, FIG. 4 is a data flow diagram of another data transmission method in an embodiment of the present invention. The other data transmission method may include steps S41 to S44, each step will be described below.

In step S41 , the network side device 42 sends overload indication information to the access point 41 .

In step S42, the access point 41 offloads all or part of the QoS data streams.

Specifically, the access point 41 may offload all or part of the QoS data streams according to the overload indication information.

In step S43 , the network side device 42 sends overload recovery instruction information to the access point 41 .

In step S44, the access point 41 resumes transmitting the QoS data flow via the wireless core network.

In a specific implementation, for more detailed content about steps S41 to S44, please refer to the description above and the description of the steps in FIG. 2 , and details will not be repeated here.

Referring to FIG. 5 , FIG. 5 is a data flow diagram of another data transmission method in an embodiment of the present invention. The yet another data transmission method may include steps S51 to S55, each step will be described below.

In step S51 , the network side device 52 sends a first message to the access point 51 .

It should be noted that, in yet another specific application of the embodiment of the present invention, before offloading all or part of the QoS data streams according to the overload indication information, it may further include: receiving a first message, the first The message includes offload capability indication information, and the offload capability indication information is used to indicate the QoS data flow that can be offloaded. The step of unloading all or part of the QoS data streams according to the overload indication information may include: unloading the QoS data streams that can be unloaded according to the overload indication information and the offload capability indication information.

In this embodiment of the present invention, before unloading all or part of the QoS data streams according to the overload indication information, a first message is received, the first message includes offload capability indication information, and the offload capability indication information It is used to indicate the quality of service data flow that can be offloaded, and then the quality of service data flow that can be offloaded can be offloaded according to the overload indication information and the offload capability indication information, so that the wireless core network can realize the quality of service data flow one by one The stream indicates whether to offload, effectively improving the accuracy of the indication, and enabling the access point to determine whether to offload the QoS data flow according to the indication of the wireless core network, and then execute it, effectively improving the accuracy and reliability of the offload.

Further, after receiving the terminal capability information, the wireless core network may judge whether the QoS data flow used for transmitting the user can be offloaded.

For example, when the user terminal can both access the data network through a wired path and access the data network through the wireless core network, it is determined that the quality of service data flow of the user can be offloaded.

In the embodiment of the present invention, by setting the user terminal to send terminal capability information to the wireless core network, and the wireless core network determines whether the quality of service data flow used to transmit the user can be offloaded based on the terminal capability information, the offloading efficiency can be further improved. accuracy and reliability.

Furthermore, the first message may use a PDU session resource setup request (PDU session resource setup request) message, and the offload capability indication information may use an offload capability information element (offload capability IE), so that the existing The resource of the message is indicated, which effectively improves the adaptability and conformity with the existing technology.

In step S52 , the network side device 52 sends overload indication information to the access point 51 .

In step S53, the access point 51 offloads all or part of the QoS data streams.

Specifically, the access point 51 may offload all or part of the QoS data streams according to the overload indication information and the offload capability indication information.

More specifically, according to the wireless core network overload indicated in the overload indication information, it is determined that all or part of the QoS data flow needs to be offloaded, and then the QoS data flow that can be offloaded is determined according to the offload capability indication information in the first message, and then the offloaded QoS data flow is offloaded. The quality of service data streams described above can be offloaded.

In step S54 , the network side device 52 sends overload recovery indication information to the access point 51 .

In step S55, the access point 51 resumes transmitting the QoS data flow via the wireless core network.

In a specific implementation, for more details about steps S51 to S55, please refer to the descriptions of the steps in the foregoing and FIG. 2 and FIG. 4 for execution, and details will not be repeated here.

In the embodiment of the present invention, there is also provided a data transmission method, which can be used for network side equipment, and can also include: sending overload indication information, the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the network needs to be offloaded. Quality of service data flow.

It can be understood that, in a specific implementation, the method can be implemented in the form of a software program, and the software program runs in a processor integrated in a chip or a chip module.

Further, the overload indication information includes overload start information.

Further, the overload start information includes: immediate start indication information, used to indicate immediate unloading of all or part of the QoS data streams; or, delayed start indication information, used to indicate unloading after a first preset period of time All or part of the QoS data streams.

Further, the overload indication information includes identification information of the QoS data flow that needs to be offloaded.

Further, the overload indication information instructs to offload the designated priority QoS data flow.

Further, the data transmission method further includes: sending overload recovery instruction information, where the overload recovery instruction information is used to instruct all or part of the QoS data streams to resume transmission via the wireless core network.

Further, the overload recovery indication information includes: immediate recovery indication information, used to indicate immediate recovery of transmission via the wireless core network; or delayed recovery indication information, used to indicate recovery of transmission via the wireless core network after a second preset time. network transmission.

Further, the overload recovery information includes identification information of offloaded QoS data streams that need to be recovered.

Further, the overload recovery information instructs to recover the offloaded QoS data flow with specified priority.

Further, the data transmission method further includes: sending a first message, where the first message includes offload capability indication information, and the offload capability indication information is used to indicate the QoS data flow that can be offloaded.

In specific implementation, for more details, please refer to the foregoing and the descriptions in FIG. 2 to FIG. 5 , and details are not repeated here.

In an embodiment of the present invention, a communication device is also provided, including a communication module and a processing module; wherein the processing module is used in combination with the communication module to implement the above data transmission method.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a data transmission device in an embodiment of the present invention. The data transmission device may be used for an access point, and may also include:

The communication module 61 is configured to receive overload indication information, the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the quality of service data flow needs to be unloaded;

The processing module 62 is configured to offload all or part of the QoS data streams according to the overload indication information.

In a specific implementation, the above means may correspond to a chip with a data processing function in the user equipment; or correspond to a chip module including a chip with a data processing function in the user equipment, or correspond to the user equipment.

For the principle, specific implementation and beneficial effects of the data transmission device, please refer to the related description about the data transmission method mentioned above, which will not be repeated here.

In the embodiment of the present invention, a data transmission device is also disclosed, which can be used for network side equipment, and can also include: a communication module, used to send overload indication information, the overload indication information is used to indicate the wireless core network is overloaded, All or part of the quality of service traffic needs to be offloaded.

An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of the above method are executed. The readable storage medium may be a computer-readable storage medium, for example, may include a non-volatile memory (non-volatile) or a non-transitory (non-transitory) memory, and may also include an optical disc, a mechanical hard disk, a solid-state hard disk, and the like. Similar to the idea above, an embodiment of the present invention also provides an access point, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor runs the computer The steps of the above method are carried out during the program.

Further, the access point may be selected from: enhanced home gateway and home wireless access point. For more information about the enhanced home gateway and home wireless access point, please refer to the previous description, and will not repeat them here.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of an access point in an embodiment of the present invention.

The access point comprises at least one processor 71 and at least one memory 72 for storing computer programs and/or data. The memory 72 is coupled with the processor 71 . The processor 71 is configured to run the computer programs and/or data stored in the memory 72 to implement the data transmission methods shown in FIGS. 2 to 5 above.

In some embodiments, the access point may further include a communication interface 73, which is used to communicate with other devices through a transmission medium, so that modules used in the access point can communicate with other devices. Exemplarily, the communication interface 73 may be a transceiver, a circuit, a bus, a module or other types of communication interfaces.

An embodiment of the present invention also provides a network side device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the above method when running the computer program A step of.

It should be pointed out that the network side device may also include at least one processor and at least one memory for storing computer programs and/or data. The memory is coupled with the processor. The processor is used to run the computer program and/or data stored in the memory to implement the above data transmission method for the network side device.

In some embodiments, the network side device may further include a communication interface, which is used to communicate with other devices through a transmission medium, so that the modules used in the access point can communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other types of communication interface.

Wherein, the network-side device may be a communication network that provides communication services for terminals, including a base station of a radio access network, a base station controller of a radio access network, and a device at a core network side.

Specifically, in the embodiment of the present invention, the processor may be a central processing unit (Central Processing Unit, referred to as CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, referred to as DSP) ), application specific integrated circuit (ASIC for short), off-the-shelf programmable gate array (field programmable gate array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (read-only memory, referred to as ROM), programmable read-only memory (programmable ROM, referred to as PROM), erasable programmable read-only memory (erasable PROM, referred to as EPROM) , Electrically Erasable Programmable Read-Only Memory (electrically EPROM, referred to as EEPROM) or flash memory. The volatile memory can be random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of random access memory (RAM) are available, such as static random access memory (static RAM (SRAM), dynamic random access memory (DRAM), synchronous Dynamic random access memory (synchronous DRAM, referred to as SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, referred to as DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, referred to as ESDRAM), Synchronously connect dynamic random access memory (synchlink DRAM, referred to as SLDRAM) and direct memory bus random access memory (direct rambus RAM, referred to as DR RAM).

It should be pointed out that the technical solution of the present invention is applicable to 5G (5 Generation) communication systems, 4G and 3G communication systems, and various new communication systems in the future, such as 6G and 7G.

Regarding each device described in the above embodiments, each module/unit contained in the product may be a software module/unit, or a hardware module/unit, or may be partly a software module/unit and partly a hardware module/unit. . For example, for each device or product applied to or integrated into a chip, each module/unit contained therein may be realized by hardware such as a circuit, or at least some modules/units may be realized by a software program, and the software program Running on the integrated processor inside the chip, the remaining (if any) modules/units can be realized by means of hardware such as circuits; They are all realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components of the chip module, or at least some modules/units can be realized by means of software programs, The software program runs on the processor integrated in the chip module, and the remaining (if any) modules/units can be realized by hardware such as circuits; /Units can be realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components in the terminal, or at least some modules/units can be implemented in the form of software programs Realization, the software program runs on the processor integrated in the terminal, and the remaining (if any) modules/units can be implemented by means of hardware such as circuits.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims

A data transmission method, characterized in that, comprising:

receiving overload indication information, where the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the quality of service data flow needs to be offloaded;

offloading all or part of the QoS data streams according to the overload indication information.
The data transmission method according to claim 1, characterized in that,

The overload indication information includes overload start information.
The data transmission method according to claim 2, wherein the overload start information includes:

Immediately start instruction information, used to instruct to immediately offload all or part of the QoS data streams;

or,

The delay start instruction information is used to indicate that all or part of the QoS data streams are offloaded after a first preset time.
The data transmission method according to claim 1, wherein the overload indication information includes identification information of the QoS data flow that needs to be offloaded.
The data transmission method according to claim 1, wherein the overload indication information instructs to offload the QoS data flow with a specified priority.
The data transmission method according to claim 1, further comprising:

receiving overload recovery indication information, where the overload recovery indication information is used to indicate that all or part of the QoS data flow resumes transmission via the wireless core network.
The data transmission method according to claim 6, wherein the overload recovery instruction information includes:

Immediately resume indication information, used to instruct to immediately resume transmission via the wireless core network;

or,

The delay recovery instruction information is used to indicate to resume transmission via the wireless core network after a second preset time.
The data transmission method according to claim 6 or 7, wherein the overload recovery information includes identification information of the unloaded QoS data stream that needs to be recovered.
The data transmission method according to claim 6 or 7, wherein the overload recovery information indicates to recover the offloaded QoS data flow with a specified priority.
The data transmission method according to claim 1, further comprising: before unloading all or part of the QoS data streams according to the overload indication information:

receiving a first message, where the first message includes offload capability indication information, where the offload capability indication information is used to indicate the quality of service data flow that can be offloaded;

Unloading all or part of the quality of service data streams according to the overload indication information includes:

According to the overload indication information and the offload capability indication information, offload the QoS data flow that can be offloaded.
The data transmission method according to claim 1, further comprising:

The offloaded quality of service data streams are transmitted over the wired path.
A data transmission method, characterized in that, comprising:

Sending overload indication information, where the overload indication information is used to indicate that the wireless core network is overloaded and all or part of the QoS data streams need to be unloaded.
The data transmission method according to claim 12, characterized in that,

The overload indication information includes overload start information.
The data transmission method according to claim 13, wherein the overload start information includes:

Immediately start instruction information, which is used to instruct to offload all or part of the quality of service data flow immediately;

or,

The delay start instruction information is used to indicate that all or part of the QoS data streams are offloaded after a first preset time.
The data transmission method according to claim 12, wherein the overload indication information includes identification information of the QoS data flow that needs to be offloaded.
The data transmission method according to claim 12, wherein the overload indication information instructs to offload the designated priority QoS data flow.
The data transmission method according to claim 12, further comprising:

Sending overload recovery indication information, where the overload recovery indication information is used to indicate that all or part of the QoS data flow resumes transmission via the wireless core network.
The data transmission method according to claim 17, wherein the overload recovery instruction information includes:

Immediately resume indication information, used to instruct to immediately resume transmission via the wireless core network;

or,

The delay recovery instruction information is used to indicate to resume transmission via the wireless core network after a second preset time.
The data transmission method according to claim 17 or 18, wherein the overload recovery information includes identification information of the unloaded QoS data stream that needs to be recovered.
The data transmission method according to claim 17 or 18, characterized in that the overload recovery information instructs to recover the offloaded QoS data flow with a specified priority.
The data transmission method according to claim 12, further comprising:

Sending a first message, where the first message includes offload capability indication information, where the offload capability indication information is used to indicate QoS data streams that can be offloaded.
A communication device, characterized by comprising a communication module and a processing module;

in:

The communication module is used to receive overload indication information, and the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the quality of service data flow needs to be unloaded;

The processing module is configured to offload all or part of the QoS data streams according to the overload indication information.
A communication device, characterized in that it includes a communication module;

in:

The communication module is used to send overload indication information, and the overload indication information is used to indicate that the wireless core network is overloaded, and all or part of the QoS data flow needs to be unloaded.
A computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is run by a processor, the steps of the data transmission method according to any one of claims 1 to 11 are executed, or the steps of claim 12 are executed. Steps of the data transmission method described in any one of 21 to 21.
An access point, comprising a memory and a processor, wherein a computer program capable of running on the processor is stored in the memory, wherein the processor executes claims 1 to 11 when running the computer program The steps of any one of the data transmission methods.
The access point according to claim 25, wherein the access point is selected from the group consisting of enhanced home gateway and home wireless access point.
A network side device, comprising a memory and a processor, the memory stores a computer program that can run on the processor, wherein the processor executes claims 12 to 21 when running the computer program The steps of any one of the data transmission methods.