CN116939718A - Communication method and communication device - Google Patents

Abstract

The application provides a communication method and a communication device. The method comprises the following steps: the access network equipment acquires first delay time according to the received first information, wherein the first delay time is a time interval for the access network equipment to feed back second information to the core network equipment, the second information is used for indicating the support capacity of the access network equipment on the service quality parameters, the first delay time is determined based on the first parameters of the data flow, and the data flow corresponds to the service quality flow. And sending second information to the core network equipment according to the first delay time under the condition that the notification control parameter is acquired and the supporting capability of the access network equipment for the service quality parameter is changed. In the application, the first delay time is determined based on the first parameter, and the requirement of the business corresponding to the data flow on low delay or real-time performance is more met relative to the second delay time, so that the problem of transmission delay of the data flow is avoided.

Description

Communication method and communication device

The present application claims priority from China patent office, application No. 202210349271.2, application name "enhancing method of Qos profile for XR service, network device, terminal device" filed on 1 month 4 of 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a communication method and a communication device.

Background

In the process of transmitting the data stream, the access network equipment may have a situation that the access network cannot meet the quality of service parameters corresponding to the data stream due to the change of the state of the wireless link of the access network equipment and the state of network congestion.

In general, the access network device feeds back to the application function device through a protocol data unit (protocol data unit, PDU) session resource notification (session resource notify) message that the value of the quality of service parameter corresponding to the data flow does not meet the value requirement configured by the network for the application function device, so as to implement the capability of the application function device to obtain the guaranteed rate provided by the access network device for the quality of service flow. Furthermore, the application function device can adjust the output rate of the data stream of the application function device so as to ensure real-time or low-delay transmission of the data stream.

In order to avoid that the access network device feeds back the PDU session resource notification message to the application function device frequently, the access network device adds hysteresis between feeding back the PDU session resource message twice. The delay time (which may be referred to as a second delay time) is at the discretion of the access network device. However, if the delay time is long, the application function device cannot timely acquire the guaranteed rate of the data stream provided by the access network device, so that the rate of the data stream generated by the application function device cannot timely acquire the guaranteed rate capability of the access network device. In this way, if the data flow corresponding to the service has higher requirements on real-time performance and low latency, the period of the data flow corresponding to the service is short, the data volume is large, the guarantee rate of the access network equipment to the data flow corresponding to the service is easy to decrease, the data flow corresponding to the service is still transmitted to the access network equipment at the original rate, thus congestion is caused, and finally, the data flow transmission is delayed.

Disclosure of Invention

In order to solve the technical problems, the application provides a communication method and a communication device. The first delay time involved in the communication method is determined based on the first parameter of the data stream, and is more in line with the requirement of the business corresponding to the data stream for low delay or real-time performance relative to the second delay time. In this way, the access network device can transmit the data stream with high real-time performance or low delay requirement within the delay budget, and further the problem of transmission delay of the data stream can be avoided.

In a first aspect, a method of communication is provided. The method comprises the following steps: the access network equipment acquires first delay time according to the received first information, wherein the first delay time is a time interval for the access network equipment to feed back second information to the core network equipment, the second information is used for indicating the supporting capability of the access network equipment on the service quality parameters, the service quality parameters are configured by the core network equipment for the service quality flow, the first delay time is determined based on the first parameters of the data flow, and the data flow corresponds to the service quality flow; and under the condition that the notification control parameter is acquired and the supporting capacity of the access network equipment for the service quality parameter is changed, sending the second information to the core network equipment according to the first delay time, wherein the notification control parameter corresponds to the service quality parameter.

Alternatively, the communication method may be performed by the access network device. Or may be performed by a chip or circuit for the access network device. The application is not limited in this regard and will be described below by way of example as being performed by an access network device for ease of description.

In this way, the access network device obtains the first delay time according to the received first information, and indicates the supporting capability of the access network device to the service quality parameter to the core network device according to the first delay time when the notification control parameter is obtained and the supporting capability of the access network device to the service quality parameter is changed. Because the first delay time is determined based on the first parameter of the data flow, compared with the second delay time, the first delay time meets the requirement of the service corresponding to the data flow on low delay or real-time performance, and the access network equipment can timely feed back the supporting capacity of the access network equipment on the service quality parameter to the core network equipment, so that the core network equipment can timely acquire the guarantee rate provided by the access network equipment on the service quality flow. Furthermore, the core network device can timely feed back the guaranteed rate of the access network device for the service quality stream to the application function device, so that the application function device can adjust the output rate of the self data stream, and the generation rate of the service data stream is ensured to be within the guaranteed rate range of the access network device, thereby meeting the real-time or low-delay transmission of the data stream.

With reference to the first aspect, in certain implementations of the first aspect, the first information is from a core network device or an application function device, and the first information includes a first parameter or a first latency.

With reference to the first aspect, in certain implementations of the first aspect, the first parameter includes at least one of: packet delay budget, packet arrival period, packet size.

Optionally, the data packets are part of a data stream. The data flow is a data flow sent by the application function device to the access network device via the core network device.

With reference to the first aspect, in some implementations of the first aspect, in a case where the first information includes a first parameter, the obtaining, by the access network device, a first lag time according to the received first information includes: and the access network equipment acquires the first delay time according to the received first information.

With reference to the first aspect, in some implementations of the first aspect, in a case where the first information includes a first lag time, the first information is determined by the application function device and sent to the access network device via the core network device; or in the case that the first information includes the first lag time, after the first information is determined by the core network device, the first information is sent to the access network device.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the application function equipment receives the second information through the core network equipment; and the application function equipment adjusts the rate of the output data stream of the application function equipment according to the second information. With reference to the first aspect, in certain implementations of the first aspect, the quality of service parameter includes the notification control parameter.

With reference to the first aspect, in certain implementations of the first aspect, the data flow is sent by the application function device to the access network device via the core network device, and/or the quality of service flow is used to manage the data flow.

In a second aspect, a communication method is provided. The method comprises the following steps: at a first moment, determining that the supporting capacity of the access network equipment for the service quality parameters corresponding to the service quality flow changes at a third moment; at the second moment, fourth information is sent to the core network equipment; wherein the third time is later than the first time; the second time is later than the first time or the second time is the first time, and the second time is earlier than the third time; the fourth information is used to indicate: the access network equipment changes the supporting capacity of the service quality parameters at the third moment, and the output guarantee rate of the data flow corresponding to the service quality flow supported by the access network equipment at the third moment.

The communication method may be performed by an access network device. Or may be performed by a chip or circuit for the access network device. The application is not limited in this regard and will be described below by way of example as being performed by an access network device for ease of description.

In this way, the access network device can predict the change of the supporting capability of the service quality parameter corresponding to the service quality flow in advance, and feed back the supporting capability of the access network device to the service quality parameter to the core network device before the supporting capability of the access network device to the service quality parameter changes. That is, the access network device may feed back the changed qos flow to the core network device in advance, and the guaranteed rate that the access network device can provide for the qos flow after the change, so that the core network device obtains the changed qos flow in advance and the guaranteed rate that the access network device can provide for the qos flow after the change. Furthermore, the core network device can feed back the changed service quality flow and the guarantee rate provided by the access network device for the service quality flow to the application function device in advance, so that before the support capacity of the access network device for the service quality parameter corresponding to the service quality flow is changed, the application function device can adjust the output rate of the data flow according to the guarantee rate provided by the access network device for the service quality flow, so as to ensure that the generation rate of the service data flow is within the guarantee rate range of the access network device, and thereby the real-time or low-delay transmission of the data flow is satisfied.

With reference to the second aspect, in certain implementations of the second aspect, the fourth information format is determined based on a first parameter of the data stream.

With reference to the second aspect, in certain implementations of the second aspect, before sending the fourth information to the core network device at the second moment, the method further includes: determining the first parameter; and determining the fourth information format according to the first parameter.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: receiving third information from the core network device, wherein the third information is used for indicating the first parameter; determining the first parameter includes: and determining the first parameter according to the third information.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: receiving third information from core network equipment, wherein the third information is used for indicating the fourth information format; before sending the fourth information to the core network device at the second moment, the method further comprises: and determining the fourth information format according to the third information.

With reference to the second aspect, in certain implementations of the second aspect, the first parameter includes at least one of: packet delay budget, packet arrival period, packet size.

In a third aspect, a communication method is provided. The method comprises the following steps: receiving third information from the application function device, wherein the third information is used for indicating a fourth information format; the third moment is the moment when the supporting capacity of the access network equipment to the service quality parameters changes; transmitting third information to the access network equipment; receiving fourth information from the access network device, wherein the fourth information is used for indicating the change of the supporting capability of the access network device to the service quality parameter corresponding to the service quality flow at a third moment and the output guarantee rate of the data flow corresponding to the service quality flow supported by the access network device at the third moment, and the fourth information is sent by the access network device at a second moment, and the second moment is earlier than the third moment; and sending fourth information to the application function device.

The communication method may be performed by a core network device. Or may be performed by a chip or circuit for a core network device. The present application is not limited thereto, and for convenience of description, the following will be described with an example of execution due to a core network device.

The technical effects of the third aspect may refer to the technical effects of the second aspect, and are not described herein.

With reference to the third aspect, in some implementations of the third aspect, the fourth information format is determined based on a first parameter of the data stream.

With reference to the third aspect, in certain implementations of the third aspect, the third information includes a first parameter, and the method further includes: and determining the fourth information format according to the third information.

With reference to the third aspect, in certain implementations of the third aspect, the first parameter signature includes at least one of: packet delay budget, packet arrival period, packet size.

In a fourth aspect, a communication method is provided. The method comprises the following steps: transmitting third information to the core network equipment, wherein the third information is used for indicating a fourth information format; receiving fourth information from the core network device, wherein the fourth information is sent to the core network device by the access network device at a second moment, and the second moment is earlier than the third moment; and adjusting the rate of the application function equipment for outputting the data stream according to the output guarantee rate indicated by the fourth information. Wherein the fourth information is used for indicating: the method comprises the steps that the access network equipment supports the change of the capacity of supporting the service quality parameters corresponding to the service quality flow at the third moment, and the output guarantee rate of the data flow corresponding to the service quality flow supported by the access network equipment at the third moment. The third time is the time when the supporting capability of the access network equipment to the service quality parameter changes.

The communication method may be performed by the application function device. Alternatively, it may be executed by a chip or a circuit for the application function device. The present application is not limited thereto, and for convenience of description, an example will be described below as being executed by the application function device.

The technical effects of the fourth aspect may refer to the technical effects of the second aspect, and are not described herein.

With reference to the fourth aspect, in some implementations of the fourth aspect, the fourth information format is determined based on a first parameter of the data stream.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the third information includes the first parameter, and the method further includes: and determining the fourth information format according to the first parameter.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the first parameter signature includes at least one of: packet delay budget, packet arrival period, packet size.

In a fifth aspect, a communication device is provided. The communication device is configured to perform the communication method of the first aspect and any possible implementation manner of the first aspect. In particular, the communication device may comprise means and/or modules, such as a processor and/or a transceiver, for performing the communication method provided in the first aspect or any of the above-mentioned implementations of the first aspect.

In one implementation, the communication apparatus is an access network device, a core network device, and/or an application function device. When the communication means is an access network device, a core network device and/or an application function device, the transceiver may also be a transceiver circuit, an input/output interface, or an input/output circuit.

In another implementation, the communication means is a chip, a system-on-chip or a circuit configured in the access network device, the core network device and/or the application function device. When the communication means is a chip, a system-on-chip or a circuit arranged in an access network device, a core network device and/or an application function device, the transceiver may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuit etc. on the chip, the system-on-chip or the circuit. The processor may be at least one processor, processing circuitry, logic circuitry, or the like.

In a sixth aspect, a communication device is provided. The communication device is configured to perform the communication method of the first aspect and any possible implementation manner of the first aspect. In particular, the communication device may comprise means and/or modules, such as a processor and/or a transceiver, for performing the communication method provided in the first aspect or any of the above-mentioned implementations of the first aspect.

In one implementation, the communication apparatus is an access network device. When the communication means is an access network device, the transceiver may also be a transceiver circuit, an input/output interface, or an input/output circuit.

In another implementation, the communication means is a chip, a system-on-chip or a circuit configured in the access network device. When the communication means is a chip, a system-on-chip or a circuit arranged in an access network device, the transceiver may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuit on the chip, the system-on-chip or the circuit. The processor may be at least one processor, processing circuitry, logic circuitry, or the like.

In a seventh aspect, a communication device is provided. The communication device is configured to perform the communication method of the first aspect and any possible implementation manner of the first aspect. In particular, the communication device may comprise means and/or modules, such as a processor and/or a transceiver, for performing the communication method provided in the first aspect or any of the above-mentioned implementations of the first aspect.

In one implementation, the communication apparatus is a core network device. When the communication device is a core network device, the transceiver may also be a transceiver circuit, an input/output interface, or an input/output circuit.

In another implementation, the communication means is a chip, a system-on-chip or a circuit configured in a core network device. When the communication device is a chip, a system-on-chip or a circuit configured in a core network apparatus, the transceiver may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, or related circuits on the chip, the system-on-chip or the circuit. The processor may be at least one processor, processing circuitry, logic circuitry, or the like.

In an eighth aspect, a communication device is provided. The communication device is configured to perform the communication method of the first aspect and any possible implementation manner of the first aspect. In particular, the communication device may comprise means and/or modules, such as a processor and/or a transceiver, for performing the communication method provided in the first aspect or any of the above-mentioned implementations of the first aspect.

In one implementation, the communication apparatus is an application function device. When the communication device is an application function device, the transceiver may also be a transceiver circuit, an input/output interface, or an input/output circuit.

In another implementation, the communication means is a chip, a system-on-chip or a circuit configured in an application function device. When the communication means is a chip, a system-on-chip or a circuit configured in an application function device, the transceiver may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuit, etc. on the chip, the system-on-chip or the circuit. The processor may be at least one processor, processing circuitry, logic circuitry, or the like.

A ninth aspect provides a processor configured to perform the communication method in any one of the possible implementations of the first to sixth aspects.

The operations such as transmitting and acquiring/receiving, etc. related to the processor may be understood as operations such as outputting and receiving, inputting, etc. by the processor, or may be understood as operations such as transmitting and receiving by the radio frequency circuit and the antenna, if not specifically stated, or if not contradicted by actual function or inherent logic in the related description, which is not limited by the present application.

In a tenth aspect, a computer program product is provided. The computer program product comprises a computer program (which may also be referred to as code, or instructions) which, when run, causes a computer to perform the communication method in any one of the possible implementations of the first to fourth aspects.

In an eleventh aspect, a computer readable storage medium is provided. The computer readable storage medium stores a computer program (which may also be referred to as code, or instructions) which, when run on a computer, causes the computer to perform the communication method in any one of the possible implementations of the first to fourth aspects described above.

In a twelfth aspect, there is provided a chip comprising: a processor for calling and running a computer program from a memory, so that a communication device on which the chip is mounted performs the communication method in any one of the possible implementations of the first to fourth aspects.

Optionally, as an implementation manner, the chip further includes a memory, where a computer program or an instruction is stored, and the processor is configured to execute the computer program or the instruction stored on the memory, and when the computer program or the instruction is executed, the processor is configured to perform the communication method in any one of the possible implementation manners of the first aspect to the fourth aspect.

In a thirteenth aspect, a communication system is provided, comprising an access network device, a core network device and/or an application function device. Wherein the access network device is configured to perform the communication method in any one of the possible implementations of the second aspect; or, the core network device is configured to perform the communication method in any one of the possible implementations of the third aspect; or, the core network device is configured to perform the communication method in any one of the possible implementation manners of the fourth aspect.

Drawings

Fig. 1 is a block diagram of an exemplary communication system according to the present application.

Fig. 2 is a schematic diagram of an example of an output data flow rate of an access network device and an output data flow rate of an application function device according to the present application.

Fig. 3 is a schematic flowchart of an example of a communication method according to an embodiment of the present application.

Fig. 4 is a schematic flow chart of another example communication method provided by an embodiment of the present application.

Fig. 5 is a schematic block diagram of an example of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

In order to facilitate understanding of the embodiments of the present application, the following description is made before describing the embodiments of the present application.

First, in the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. When information indicated by a certain information (first information described below) is referred to as information to be indicated, there are many ways to indicate the information to be indicated in the specific implementation process. For example, but not limited to, the information to be indicated may be directly indicated, such as the information to be indicated itself or an index of the information to be indicated, etc. The information to be indicated can also be indicated indirectly by indicating other information, wherein the other information and the information to be indicated have an association relation. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, the indication of the specific information may also be achieved by means of a pre-agreed (e.g., protocol-specified) arrangement sequence of the respective information, thereby reducing the indication overhead to some extent.

Second, the first, second and various numerical numbers in the embodiments shown below are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. For example, different parameter information, etc.

Third, in the embodiments shown below, "preconfiguration" may be implemented by pre-storing corresponding codes, tables, or other manners in a device (e.g., an application function device, a core network device, or an access network device) that may be used to indicate relevant information, and the present application is not limited to a specific implementation manner thereof.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, future fifth generation (5th generation,5G) system, or New Radio (NR), etc.

The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system and the like. The application is not limited in this regard.

Generally speaking, the number of connections supported by the conventional communication system is limited and is also easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (machine to machine, M2M) communication, machine type communication (machine type communication, MTC), vehicle-to-everything (vehicle to everything, V2X) communication (which may also be referred to as vehicle network communication), for example, vehicle-to-vehicle (vehicle to vehicle, V2V) communication (which may also be referred to as vehicle-to-vehicle communication), vehicle-to-infrastructure (vehicle to infrastructure, V2I) communication (which may also be referred to as vehicle-to-infrastructure communication), vehicle-to-pedestrian (vehicle to pedestrian, V2P) communication (which may also be referred to as vehicle-to-person communication), vehicle-to-network (vehicle to network, V2N) communication (which may also be referred to as vehicle-to network communication).

Fig. 1 is a schematic diagram of an architecture of a communication system suitable for use in embodiments of the present application.

For example, as shown in FIG. 1, the architecture is, for example, a fifth generation system (the 5h generation system,5GS). The 5GS includes a terminal device, a radio access network (radio access network, RAN) device, an access and mobility management function (access and mobility management function, AMF) device, a session management function (session management function, SMF) device, a policy control function (policy control function, PCF) device, a network open function (network exposure function, NEF) device, an application function (application function, AF) device, and some devices not shown in fig. 1, such as a network function storage function (network function repository function, NRF) device, and the like. The devices in the 5GS mentioned above may also be referred to as 5G core network devices.

It should be noted that the device shown in fig. 1 may also be referred to as a network element, which is not limited in this embodiment of the present application. For convenience of description, the embodiments of the present application are described by taking a device as an example.

The following briefly describes the devices shown in fig. 1:

1. terminal equipment: may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device.

The terminal device may be a device that provides voice/data connectivity to a user. Such as a handheld device, an in-vehicle device, etc., having a wireless connection function. Currently, some examples of terminals are: a mobile phone, tablet, laptop, palmtop, mobile internet device (mobile internet device, MID), wearable device, virtual Reality (VR) device, augmented reality (augmented reality, AR) device, wireless terminal in industrial control (industrial control), wireless terminal in unmanned-drive (self-driving), wireless terminal in teleoperation (remote medical surgery), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, public computing device or other processing device connected to wireless modem, vehicle-mounted device, wearable device, terminal device in 5G network or terminal in future evolutionary communication (public land mobile network), and the like, without limiting the application.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device comprises full functions, large size and can realize complete or partial functions independent of the intelligent mobile phone. For example: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the application, the terminal equipment can also be terminal equipment in an internet of things (internet of things, ioT) system, and the IoT is an important component of the development of future information technology, and the main technical characteristics are that the object is connected with the network through a communication technology, so that the man-machine interconnection and the intelligent network of the internet of things are realized.

2. RAN: the network access function is provided for the terminal equipment, and the transmission tunnels with different qualities can be used according to the level of the user, the service requirement and the like. The access network may be an access network employing different access technologies. There are two types of current radio access technologies: 3GPP access technologies (e.g., radio access technologies employed in 3G, 4G, or 5G systems) and non-3GPP (non-3 GPP) access technologies. The 3GPP access technology refers to an access technology conforming to the 3GPP standard specification, for example, access network devices in a 5G system are referred to as next generation base station nodes (next generation node base station, gNB). The non-3GPP access technology refers to an access technology that does not conform to the 3GPP standard specification, for example, a null interface technology represented by an Access Point (AP) in wireless fidelity (wireless fidelity, wiFi).

An access network implementing access network functions based on wireless communication technology may be referred to as a radio access network device. The wireless access network device can manage wireless resources, provide access service for the terminal device, and further complete the forwarding of control signals and user data between the terminal device and the core network device.

In addition, in the embodiment of the present application, when the transmission air interface between the RAN and the terminal device is insufficient to support the quality of service parameter corresponding to the current quality of service flow, information indicating the change of the quality of service parameter supporting capability of the access network device corresponding to the quality of service flow is sent to the session management function device.

Access network devices include, for example, but are not limited to: next generation base stations in 5G, evolved node B (eNB), radio network controller (radio network controller, RNC), node B (NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (e.g., home evolved nodeB, or home node B, HNB), baseBand unit (BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), mobile switching center, and the like. The access network device may also be a wireless controller in the context of a cloud wireless access network (cloud radio access network, CRAN), or the access network device may be a relay station, an access point, a vehicle device, a wearable device, a network device in a future 5G network or a network device in a future evolved PLMN network, etc. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the wireless access network equipment.

3. Access and mobility management function device: the method is mainly used for mobility management, access management and the like, such as user location updating, user registration network, user switching and the like. For example, the access and mobility management function device may receive non-access stratum (NAS) signaling (including mobility management (mobility management, MM) signaling and session management (session management, SM) signaling) of the terminal device and related signaling of the access network device (e.g., base station granularity N2 signaling that interacts with a mobility management network element), and complete the registration procedure of the user and forwarding of SM signaling and mobility management. The access and mobility management function device may also be used to implement other functions in the mobility management entity (mobility management entity, MME) than session management. Such as lawful interception, or access authorization (or authentication), etc.

For example, in embodiments of the present application, the access and mobility management function device may be responsible for forwarding messages sent from the session management function device to the RAN.

4. Session management function device: is a control plane network element provided by the operator network and is responsible for managing PDU sessions of the terminal device. A PDU session is a channel for outgoing PDUs, and the terminal device needs to transmit PDUs with a Data Network (DN) device through the PDU session. The PDU session is responsible for establishment, maintenance, deletion, etc. by the session management function device. The session management function device includes session management (such as session establishment, modification and release, including tunnel maintenance between the user plane network element and the access network device), selection and control of the user plane network element, service and session management continuity (service and session continuity, SSC) mode selection, roaming, and other session related functions.

For example, in the embodiment of the present application, the session management function device is responsible for forwarding the qos profile and managing the qos flow.

5. Policy control function device: the method is mainly responsible for policy control functions such as charging, service quality bandwidth guarantee, mobility management, terminal equipment policy decision and the like aiming at session and service flow levels.

For example, in the embodiment of the present application, the policy control function device is responsible for formulating a quality of service configuration file and forwarding it to the session management function device.

6. Network open function device: for securely opening services and capabilities provided by 3GPP network functions, etc., to the outside.

7. Application function device: is responsible for providing services to the 3GPP network, such as affecting service routing, interacting with policy control (policy control) network elements for policy control, etc.

For example, in an embodiment of the present application, the application function device may provide a quality of service requirement (e.g., qoS reference information) and communicate the quality of service requirement to the policy control function device, subscribing to one or more quality of service profiles. In addition, the application function device may also receive a PDU session resource notification message fed back by the policy control function device, where the PDU session resource notification message is used to indicate the supporting capability of the access network device for the quality of service parameter, and adjust the rate of the data stream output by the access network device in real time.

In some embodiments, the application function device may be a third party function entity, that is, the application function device may be an application function device external to the 3GPP network. In other embodiments, the application function device may be an operator deployed application service, that is, the application function device may be an application function device within a 3GPP network.

It should be noted that, for the user plane, the application function device may refer to an application server associated with an application function network element.

It will be appreciated that the network elements or functions described above may be either network elements in a hardware device, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform). As a possible implementation method, the network element or the function may be implemented by one device, or may be implemented by a plurality of devices together, or may be a functional module in one device, which is not specifically limited by the embodiment of the present application.

In the architecture shown in fig. 1, devices may communicate through an interface shown in the figure. As shown in fig. 1, a next generation Network (NG) 1 interface (abbreviated as N1 interface) is an interface between a terminal device and an access and mobility management function device; the N2 interface is AN interface between the (R) AN and the access and mobility management function device, and is used for sending non-access stratum (NAS) messages; the N11 interface is an interface between the access and mobility management function equipment and the session management function equipment; the N7 interface is an interface between session management function equipment and strategy control function equipment; the N30 interface is an interface between the strategy control function equipment and the network opening function equipment; the N5 interface is an interface between the strategy control function equipment and the application function equipment; the N33 interface is an interface between the network open function device and the application function device.

In fig. 1, N2, N11, N7, N30, N5, and N33 are interface serial numbers. The meaning of these interface serial numbers may be found in the third generation partnership project (3rd generation partnership project,3GPP) standard protocol, and is not limited herein.

Note that, the names of the devices and the communication interfaces between the devices in fig. 1 are described simply by taking the names specified in the current protocol as an example, but the embodiment of the present application is not limited to be applied to the currently known communication system. Therefore, the present application is not limited to specific names of devices, interfaces or signaling, and only represents the functions of the devices, interfaces or signaling, and can be correspondingly extended to other systems, such as 2G, 3G, 4G or future communication systems.

The architecture to which the embodiment of the present application shown in fig. 1 can be applied is merely an example, and the architecture to which the embodiment of the present application is applied is not limited to this, and any architecture capable of implementing the functions of the respective devices is applicable to the embodiment of the present application.

It should also be understood that the above designations are merely intended to facilitate distinguishing between different functions and should not be construed as limiting the application in any way. The application does not exclude the possibility of using other designations in 5G networks as well as in other networks in the future. For example, in a 6G network, some or all of the above devices may follow the terminology in 5G, other names may also be used, etc. The names of interfaces between the devices in fig. 1 are only an example, and the names of interfaces in the specific implementation may be other names, which are not specifically limited by the present application. Furthermore, the names of the transmitted messages (or signaling) between the above-described respective devices are also merely an example, and do not constitute any limitation on the functions of the messages themselves.

To facilitate an understanding of the embodiments of the present application, the terms involved in the present application will first be briefly described.

1. Quality of service: description of the overall requirements in the data streaming service process. Different quality of service may be provided for different data streaming services.

2. Quality of service (quality of service, qoS) flow: the method is mainly used for managing data streams, and each data stream has a service quality stream corresponding to the data stream. Which is the minimum granularity that a 5G system provides differentiated QoS in PDU sessions.

The QoS flow is generated primarily from the quality of service profile.

It should be noted that, the english corresponding to the QoS flow may be QoS flow or other english names, which is not limited in the present application.

3. Quality of service reference: which can be understood as an example of a quality of service requirement. Which is mainly customized for different data streams by the application function device.

It should be noted that, the english corresponding to the QoS reference may be a QoS reference or other english names, which is not limited in the present application.

4. Quality of service profile: including the value of at least one quality of service parameter corresponding to the quality of service stream.

It should be noted that, the english corresponding to the QoS profile may be QoS profile or other english names, which is not limited in this application.

Illustratively, during the PDU session establishment, the policy control function device may generate at least one quality of service profile based on the quality of service reference.

For example, the quality of service reference parameters include, but are not limited to including, at least one of: the 5G QoS identifier (5G QoS Identifier,5QI), allocation and retention priority (allocation and retention priority, ARP), reflection QoS attributes (reflective QoS attribute, RQA), guaranteed stream bit rate (guaranteed flow bit rate, GFBR), guaranteed bit rate (guaranteed bit rate, GBR), maximum stream bit rate (maximum flow bit rate, MFBR), maximum packet loss rate (maximum packet loss rate, MPLR), packet delay budget (packet delay budget, PDB), packet error rate (packet error rate, PER).

As can be seen from the above description of the terms involved in the present application, there is a correspondence between the data flow, the quality of service flow, and the quality of service parameter.

Alternatively, if the application function device has rate adaptation capability, i.e. the application function device has the capability to adjust the rate of the data stream output by itself, the quality of service parameter may also include notification control (notification control)

After the policy control function device generates the service quality configuration file, the policy control function device transmits the service quality configuration file to the access network device through the session management function device and the access and mobility management function device, so that the access network device transmits a data stream corresponding to the service quality configuration file according to the service quality configuration file.

In the process of transmitting the data stream, the access network device may change the state of the wireless link (for example, the quality of the wireless link and the congestion condition of the wireless link) of the access network device, so that the value of the quality of service parameter corresponding to the data stream may not meet the value requirement configured by the network.

Firstly, the access network device can adjust the rate of the output data stream of the access network device, namely, the access network device adjusts the rate of the data stream transmitted to the terminal device.

Secondly, the access network equipment feeds back the value of the service quality parameter corresponding to the data flow output by the access network equipment to the application function equipment, and the value requirement of the network for the configuration of the access network equipment is not met.

For example, if the application function device does not subscribe to the network for an alternative quality of service profile. That is, the access network device receives only one quality of service profile corresponding to the quality of service flow. When the current stream bit rate of the access network device cannot meet the GFBR indicated by the service quality configuration file, the access network device transmits notification control to the application function device through the access and mobility management function device, the session management function device and the policy control function device, indicating that the GFBR cannot be guaranteed (GFBR can no longer be guaranteed). At this point, the access network device still reserves the qos flow and tries to meet the qos profile until the core network device informs the access network device to release the resources of the qos flow.

For another example, if the application function device subscribes to multiple alternative qos profiles from the simultaneous network, that is, the access network device receives multiple qos profiles corresponding to the qos flow. When the current stream bit rate of the access network device cannot meet the GFBR indicated by the current quality of service profile, the access network device may select one quality of service profile from the plurality of quality of service profiles that can meet the current stream bit rate. The access network device then sends a notification control to the application function device through the access and mobility management function device, the session management function device and the policy control function device, indicating that "GFBR for the data flow cannot be guaranteed (GFBR of the QoS Flow can no longer be guaranteed)" and "optional quality of service parameter set (The reference to the Alternative QoS parameter set) is referenced". If the access network device does not select a service quality configuration file which can meet the current stream bit rate from a plurality of service quality configuration files. The notification control sent by the access network device to the application function device indicates that "GFBR of the data flow cannot be (can be) guaranteed (GFBR of the QoS Flow can no longer (or can again) be guaranteed)" and "the lowest selectable quality of service profile cannot be satisfied (the lowest alternative QoS profile cannot be fulfilled)".

Finally, after receiving the PDU session resource message fed back by the access network device, the application function device can change the output rate of the data stream according to the guarantee rate of the access network device for the service quality stream, so as to ensure that the generation of the service data stream is within the guarantee rate range provided by the access network, and finally, the real-time or low-delay transmission of the data stream is satisfied.

However, due to the time variability of the state of the radio link of the access network device, the qos parameter corresponding to a certain qos flow may be frequently switched between meeting the value requirement configured by the network for the access network device and failing to meet the value requirement configured by the network for the access network device.

In one implementation, to avoid the access network device feeding back PDU session resource messages frequently to the application function device, the access network device may add a second lag time between feeding back PDU session resource messages twice. The second hysteresis time is determined by the access network device itself. Illustratively, the delay time (hysteresis) of the access network device may be a channel-based coherence time. For example, if the carrier frequency is 4GHz, the terminal device moves at a speed of 3km/h, the coherence time is about 38ms, and the lag time may be 38ms.

However, if the second delay time is longer, the application function device cannot timely acquire the supporting capability of the access network device to the service quality parameter, so that the rate of the input data stream of the access network device cannot be timely adjusted. Thus, for data streams with high real-time performance or low delay requirements, the data streams can not be transmitted within the delay budget in the transmission process, and the problem of transmission delay occurs in the data streams.

Fig. 2 is a schematic diagram of an output data flow rate of an access network device and an output data flow rate of an application function device according to an embodiment of the present application.

For example, as shown in fig. 2, before time t1, the rate s (t) of the output data stream of the access network device and the rate r (t) of the output data stream of the application function device are maintained at v1. At time t1, the access network device may first down-regulate its own rate s (t) of the outgoing data stream due to degradation of the quality of the radio link of the access network device and/or congestion. For example, the access network device adjusts the rate of its own output data stream from v1 to v2 between time t1 and time t2, and maintains the rate of its own output data stream at v2.

In addition, after the time t1, the access network device determines a second delay time according to the quality and/or congestion condition of the wireless link, and feeds back the PDU session resource message to the application function device. After receiving the PDU session resource message fed back by the access network device, the application function device can correspondingly down-regulate the rate of its own output data stream. For example, the access network device adjusts the rate of its own output data stream from v1 down to v2 between time t3 and time t4, and maintains the rate of its own output data stream at v2.

Thus, after time t4, the rate s (t) of the output data stream of the access network device and the rate r (t) of the output data stream of the application function device are maintained at v2.

In the example shown in fig. 2, if the delay time is 38ms, and the traffic corresponding to the transmitted data stream is extended reality (XR) traffic, the XR traffic corresponds to a video frame rate of 60 frames per second (fps), and each frame is spaced by 16.7ms. Since the delay time is 38ms, the application function device can adjust the speed of the output data stream of the application function device at the earliest time (t1+38ms), namely t4 is more than or equal to (t1+38ms). Thus, the data amount of at least two frames cannot follow the adjustment of the radio link status at the access network device side in time. Thus, the delay required by the data transmission of the two frames becomes long, and in view of some services such as XR service, the real-time requirement is high, and the frame loss is caused by excessively long data transmission delay exceeding the delay budget.

In another implementable way, to avoid the access network device feeding back PDU session resource messages frequently to the application function device, the access network device may signal via access network code rate recommendation (access network bitrate recommendation, ANBR) in the IP multimedia subsystem (IP multimedia subsystem, IMS). And recommending a bit rate value to the terminal equipment, wherein the bit rate value is transmitted to the application layer after redundancy is removed, so that the selection of a coding and decoding type (codec type) of a source end (application function equipment end) by the application layer is changed. As a result of this selection, the access network device may inform the application function device via a packet header of the real-time transport protocol (real-time transport protocol, RTP) protocol. Among other things, the implementation of ANBR signaling relies mainly on medium access control (medium access control, MAC) layer signaling between the terminal device and the access network device, which may be, for example, a recommended bit rate Control Element (CE) (recommended bit rate MAC CE).

However, for the scheme that the application function device obtains the supporting capability of the access network device to the service quality parameter by using the ANBR signaling depending on the IMS, if the transmitted data stream does not use the IMS, the ANBR signaling is difficult to function. In addition, the ANBR signaling relies on the interaction of the air interface, and consumes the resources of the air interface.

Therefore, the embodiment of the application provides a communication method. In the communication method, the first delay time is determined based on the first parameter of the data stream, and compared with the second delay time, the first delay time meets the requirement of the business corresponding to the data stream on low delay or real-time performance. In this way, for a data stream with high real-time performance or low latency requirement (for example, a data stream based on XR service or a data stream based on real-time video call service), the generation rate of the service data stream can be ensured to be within the range of the guaranteed rate provided by the access network device, so that real-time or low latency transmission of the data stream is satisfied.

In addition, the transmission of the data flow in the communication method does not depend on the IMS, and the consumption of air interface resources of the IMS is avoided.

The following describes a communication method provided by an embodiment of the present application with reference to specific drawings.

Based on the configuration of the communication system of fig. 1, fig. 3 is a schematic flowchart of an example of a communication method 200 according to an embodiment of the present application.

For example, as illustrated in fig. 3, the communication method 200 includes S210 to S260. S210 to S260 are described in detail below.

S210, the application function device acquires a first hysteresis time.

The first delay time is a time interval when the access network equipment feeds back second information to the core network equipment, and the second information is used for indicating the supporting capability of the access network equipment to the service quality parameters.

The first delay time may also be referred to as a first delay window, a first delay time, and the like. The name of the first delay time is not limited in the embodiment of the present application.

It should be noted that, the supporting capability of the access network device to the qos parameter corresponding to the qos flow may include: the access network device is not able to support the quality of service parameters; or, the access network device can support quality of service parameters. Thus, the second information may be used to indicate that the access network device is not capable of supporting the quality of service parameter; or, the second information may be used to indicate that the access network device is capable of supporting the quality of service parameter.

The relevant description of the qos parameters may refer to the above description, and will not be repeated here.

In some embodiments, the application function device obtains the first latency based on a first parameter of the data stream.

The first parameter is not limited in the embodiment of the application. Illustratively, the first parameter may include at least one of: PDB, packet arrival period, packet size.

The data packet is a part of the data stream. The data flow is a data flow sent by the application function device to the access network device via the core network device.

In one example, the first delay time may be N times the packet arrival period or PDB. Wherein N is more than 0 and less than 1. For example, the N may be 1/10 or 1/8 or 1/4 or 1/2, etc.

In another example, the first delay time may be inversely related to the size of the data packet.

In other embodiments, the application function device obtains the first latency according to a communication protocol.

For example, the communication protocol may specify the first hysteresis time as a preset value.

The embodiment of the present application is not limited to the preset value in this embodiment. For example, the preset value is smaller than a second hysteresis time determined by the access network device itself. Wherein the second hysteresis time may be derived based on a large amount of experimental data.

For example, in the case of XR traffic, if the XR traffic is generated at 60fps, the packet arrival period is 16.7ms. If the delay time corresponding to the XR service determined by the access network device is 38ms, the delay time corresponding to the XR service determined by the embodiment of the present application may be 1/4 or 1/2 of the arrival period of the data packet, for example, may be 4ms to 8ms, which is far less than 38ms.

S220, the application function management device sends first information to the core network device. Correspondingly, the core network device receives the first information sent by the application function device. Wherein the first information is used to indicate a first lag time.

If the core network device includes a policy control function device, a session management function device, and an access and mobility management function device, the specific procedure of S220 includes S221 to S223, and hereinafter, S221 to S223 will be described in detail.

S221, the application function device sends first information to the strategy control function device. Accordingly, the policy control function device receives the first information sent by the application function device.

In one example, the application function device sends the first information directly to the policy control function device.

In another example, the application function device may send the first information to the policy control function device through the network opening function device. Specifically, the application function device may transmit the first information to the network open function device, and then the network open function device forwards the first information to the policy control function device.

The embodiment of the present application does not limit the transmission manner of the first information described in S221.

For example, the first information related to S221 may be carried in an existing policy authorization creation Request message (npcf_policy authorization-creation Request).

S222, the policy control function device sends first information to the session management function device. Accordingly, the session management function device receives the first information sent by the policy control function device.

The embodiment of the present application does not limit the transmission manner of the first information described in S222.

For example, the first information described in this S222 may be carried in an existing policy association establishment (sm_ Policy Association Establishment) message or in a session management function device initiated policy association modification (SMF initiated SM Policy Association Modification).

S223, the session management function device sends the first information to the access and mobility management function. Accordingly, the access and mobility management function receives the first information sent by the session management function device.

The embodiment of the present application does not limit the transmission manner of the first information described in S223.

For example, the first information described in S223 may be carried in an existing N1N2message transport container message (namf_communication_n1n2message).

And S230, the core network equipment sends first information to the access network equipment. Accordingly, the access network device sends the first information to the core network device.

If the core network device includes a policy control function device, a session management function device, and an access and mobility management function, the core network device refers to the access and mobility management function in S230.

The embodiment of the present application does not limit the transmission manner of the first information in S230.

For example, the first information described in S230 may be carried in an existing N2 PDU session request (N2 PDU session request) message.

S240, when the notification control parameter is obtained, and the support capability of the access network device for the service quality parameter is changed, second information is sent to the core network device according to the first delay time. Correspondingly, the core network equipment is accessed to the second information sent by the network equipment.

Wherein the quality of service parameter comprises a notification control parameter correspondence.

It should be noted that, the change of the supporting capability of the access network device to the quality of service parameter may include: the access network equipment changes from being incapable of supporting the quality of service parameters to being capable of supporting the quality of service parameters; or, the access network device changes from being capable of supporting the quality of service parameter to being incapable of supporting the quality of service parameter.

In case the access network device changes from being unable to support the quality of service parameter to being able to support the quality of service parameter, the second information is used to indicate that the access network device is able to support the quality of service parameter change. In case the access network device is from being able to support the quality of service parameter variation to being unable to support the quality of service parameter variation, the second information is used to indicate that the access network device is unable to support the quality of service parameter variation.

The embodiment of the present application does not limit the transmission manner of the second information in S240.

For example, the second information described in S240 may be carried in an existing PDU session resource notification message.

If the core network device includes a policy control function device, a session management function device, and an access and mobility management function, the core network device refers to the access and mobility management function in S240.

And S250, the core network equipment sends second information to the application function equipment. Correspondingly, the application function device receives the second information sent by the core network device.

If the core network device includes a policy control function device, a session management function device, and an access and mobility management function, the specific procedure of S250 includes S251 to S253, and S251 to S253 will be described in detail below.

S251, the access and mobility management function sends second information to the session management function device. Accordingly, the session management function device receives the second information transmitted by the access and mobility management function.

The embodiment of the present application does not limit the transmission manner of the second information in S251.

For example, the second information described in S251 may be carried in an existing PDU session update context (namf_pdu session_ update SM context) message.

Optionally, in some embodiments, after S251, the session management function device may further send the first response information to the access and mobility management function. Accordingly, the access and mobility management function receives the first response information sent by the session management function device. Wherein the first response information is used for indicating that the session management function device has received the second information sent by the access and mobility management function.

The embodiment of the application does not limit the transmission mode of the first response information.

For example, the first Response information may be carried in an existing PDU session update context Response (Response of nsmf_pdu session_ update SM context) message.

S252, the session management function device sends the second information to the policy control function device. Accordingly, the policy control function device receives the second information sent by the session management function device.

The embodiment of the present application does not limit the transmission manner of the second information in S252.

For example, the second information described in this S252 may be carried in an existing session management function device initiated policy association modification response (SMF initiated SM Policy Association Modification Response) message.

Optionally, in some embodiments, after S252, the policy control function device may further send second response information to the session management function device. Accordingly, the session management function device receives the second response information sent by the policy control function device. The second response information is used for indicating that the policy control function device has received the second information sent by the session management function device.

The embodiment of the application does not limit the transmission mode of the second response information.

For example, the second Response information may be carried in an existing policy association setup Response (Response of sm_ Policy Association Establishment) message or in a session management function device initiated policy association modification Response (Response of SMF initiated SM Policy Association Modification).

S253, the policy control function device transmits the second information to the application function device. Accordingly, the application function device receives the second information sent by the policy control function device.

The embodiment of the present application does not limit the transmission manner of the second information described in S253.

For example, the second information may be carried in an existing policy authorization update service operation (npcf_ Policy Authorization _ update service operation) message or in a policy authorization creation Response message (npcf_ Policy Authorization _create Response).

In one example, the policy control function device sends the second information directly to the application function device.

In another example, the application function device may send the second information to the policy control function device through the network opening function device. Specifically, the policy control function device may transmit the second information to the network open function device, and then the network open function device forwards the second information to the application function device.

Optionally, in some embodiments, after S253, the application function device may further send third response information to the policy control function device. Accordingly, the policy control function device receives the third response information sent by the application function device. The third response information is used for indicating that the application function equipment receives the second information sent by the strategy control function equipment.

The transmission mode of the third response information is not limited in the embodiment of the application.

S260, the application function device adjusts the rate of the output data stream.

If the second information is used for indicating that the access network equipment can support the service quality parameters corresponding to the service quality flow; the application function device may increase the rate of the output data stream.

If the second information can be used for indicating that the access network equipment cannot support the service quality parameters corresponding to the service quality flow; the application function device may reduce the rate of the output data stream.

The manner in which the embodiments of the present application adjust the rate of the output data stream for the application device is not limited.

In one example, the application function device may directly adjust the rate of the output data stream.

In another example, the application function device may adjust the rate of the output data stream by adjusting the codec type.

For example, the application function device may encode the data using a compressed simple codec type, such that the rate of the output data stream of the application function device is increased. For another example, the application function device may encode the data using a compression complex codec type, such that the rate of the output data stream of the application function device is reduced.

In yet another example, the application function device may adjust the rate of the output data stream by adjusting the size of the data amount.

For example, the application function device may compress the data using a higher compression rate or resolution compression algorithm such that the size of the compressed overall data is reduced and the rate of the output data stream of the application function device is reduced.

Optionally, in some embodiments, after S260, the application function device may further feed back to the terminal device the codec type or compression algorithm corresponding to the data stream. In this way, the terminal device may decode or decompress the data stream sent by the access network device using the same codec type or compression algorithm.

The mode of feeding back the codec type or the compression algorithm corresponding to the data stream to the terminal equipment by the application function equipment is not limited. For example, the application function device may feed back the codec type or the compression algorithm corresponding to the data flow to the terminal device through the policy control function device, the session management function device, the access and mobility management function device, and the access network device, respectively, in sequence.

As can be seen from the above-described communication method 200, the first latency is determined by the application function device, and the application function device carries the first latency in the first information, and transmits the first information to the access network device via the core network device.

Optionally, in some embodiments, the first delay time may be further determined by the core network device, and the core network device carries the first delay time in the first information and transmits the first delay time to the access network device.

In this embodiment, S220, S211, S230 to S260 are specifically included.

Among them, S220 described in this embodiment differs from S220 described above in that: the first information referred to in S220 described in this embodiment is used to indicate the first parameter, not to indicate the first lag time.

S211, the core network device acquires the first delay time according to the first information, that is, the core network device acquires the first delay time according to the first parameter. For how the core network device obtains the first delay time according to the first parameter, reference may be made to the description related to S210 above, which is not repeated here.

S230 to S260 may be referred to the above description, and are not repeated here.

Alternatively, in other embodiments, the first hysteresis time may also be determined by the access network device.

In this embodiment, S220, S230, S212, S240 to S260 are specifically included.

Among them, S220 and S230 described in this embodiment are different from S220 and S230 described above, respectively, in that: the first information referred to in S220 and S230 in this embodiment is used to indicate the first parameter, not to indicate the first lag time.

S212, the access network equipment acquires first delay time according to the first information, that is, the access network equipment acquires the first delay time according to the first parameter. For how the access network device obtains the first latency according to the first parameter, reference may be made to the description related to S210 above, which is not repeated here.

S240 to S260 may be referred to the above description, and are not repeated here.

The embodiment of the application also provides another communication method, in which the application function can acquire the supporting capability of the access network equipment to the service quality parameter in advance, and the supporting capability of the access network equipment to the service quality parameter changes, and the access network equipment can guarantee the rate provided by the service quality flow (corresponding to the service quality parameter). Before the supporting capacity of the access network equipment to the service quality parameters changes, the output rate of the data flow can be adjusted according to the guarantee rate of the access network equipment to the service quality flow, so that the generation rate of the service data flow is ensured to be within the range of the guarantee rate of the access network equipment, and the real-time or low-delay transmission of the data flow is met. In this way, for the data stream with high real-time performance or low time delay requirement, the access network device can finish transmitting within the time delay budget, so that the problem of transmission delay of the data stream can be avoided.

In addition, the transmission of the data flow in the communication method does not depend on the IMS, and the consumption of air interface resources of the IMS is avoided.

Based on the configuration of the communication system of fig. 1, fig. 4 is a schematic flowchart of an example of a communication method 300 according to an embodiment of the present application.

For example, as described in fig. 4, the communication method 300 includes S310 to S370. S310 to S370 are described in detail below.

S310, the application function device acquires the information format.

In one example, where the information format is a first format, the information includes two parts of content, the first part of content including content of the support capability of the access network device for the quality of service parameter at the third time, and the second part of content including content of the output guaranteed rate of the quality of service flow supported by the access network device at the third time. The description of the third moment is given below, and is not repeated here.

In another example, where the information format is the second format, the information includes only a portion of the content, and the portion of the content includes support capability content of the access network device for the quality of service parameters.

It should be noted that, the description of the change of the supporting capability of the access network device to the quality of service parameter may refer to the related description in the above method 200, which is not repeated herein.

In some embodiments, the application functionality device may determine the information format based on the first parameter.

For the description of the first parameter, reference may be made to the related description in the method 200, and the description is omitted here.

For example, if the size of the data packet is greater than or equal to a sixth preset value and the arrival period of the data packet corresponding to the qos flow is less than or equal to a fourth preset value, the information format is the first format. Otherwise, the information format is a second format.

For another example, if the size of the data packet is greater than or equal to the seventh preset value and the PDB corresponding to the qos flow is less than or equal to the fifth preset value, the information format is the first format. Otherwise, the information format is a second format.

The specific values of the fourth preset value to the seventh preset value are not limited in the embodiment of the present application. The fourth to seventh preset values may be set to different values based on the type of the data stream, for example. For example, if the type of the data stream is XR type, the sixth preset value and the seventh preset value may take values between 25kbits and 75kbits, the fourth preset value may take 16.7ms, and the fifth preset value may take 38ms.

In other embodiments, the application functionality device may determine the information format according to a communication protocol. For example, it may be pre-configured that: if the access network device can predict the change of the supporting capability of the service quality parameter corresponding to the service quality flow in advance, the information format is the first format, i.e. the information of the first format is preferentially used, otherwise, the information format is the second format.

For another example, the communication protocol may be preconfigured: if the access network device can predict the change of the supporting capability of the service quality parameter corresponding to the service quality flow in a short time in advance, the information format is the first format, i.e. the information of the first format is preferentially used, otherwise, the information format is the second format. A short time is understood to mean a time with a time interval smaller than a preset interval.

The embodiment of the application does not limit the specific value of the preset interval. The preset interval may be related to a first parameter of the data stream, for example.

And S320, the application function management device sends third information to the core network device. Correspondingly, the core network device receives the third information sent by the application function device. Wherein the third information is used to indicate the information format described in S310.

The embodiment of the present application does not limit the transmission manner of the third information related to S320.

For example, the transmission manner of the third information related to S330 refers to the related description of the transmission manner of the first information in S220, which is not described herein.

And S330, the core network equipment sends third information to the access network equipment. Accordingly, the access network device sends the third information to the core network device.

The embodiment of the present application does not limit the transmission mode of the third information related to S330.

For example, the transmission manner of the third information related to S330 is referred to the related description of the transmission manner of the first information in S230, which is not described herein.

S340, the access network equipment determines that the support capacity of the access network equipment for the service quality parameter changes at the third moment at the first moment. Wherein the third time is later than the first time. I.e. the access network device predicts in advance the moment when the access network device changes its supporting capacity for the quality of service parameters.

The manner how the access network device predicts the moment when the access network device changes the supporting capability of the access network device to the service quality parameters is not limited in the embodiment of the application.

For example, the access network device may predict the moment when the access network device changes its support capability for the quality of service parameter by detecting the rate of data packets transmitted during the target time.

For another example, the access network device may predict a time at which the access network device changes its support capability for the quality of service parameter based on a rate of data packets transmitted during the target time and a prediction algorithm.

And S350, the access network equipment sends fourth information to the core network equipment at the second moment.

Specifically, at the second moment, the access network device sends fourth information to the core network device according to the information format indicated by the third information in S330 and the value of the output guarantee rate of the quality of service flow supported by the access network device at the third moment. Wherein the fourth information is used for indicating: the supporting capability of the access network equipment to the service quality parameter at the third moment, and the value of the output guarantee rate of the service quality flow supported by the access network equipment at the third moment.

The embodiment of the present application does not limit the transmission manner of the fourth information described in S350.

For example, the transmission manner of the fourth information refers to the related description of the transmission manner of the second information in S240, which is not described herein.

And S360, the core network equipment sends fourth information to the application function equipment. Correspondingly, the application function device receives fourth information sent by the core network device.

The embodiment of the present application does not limit the transmission manner of the fourth information described in S360.

For example, the transmission manner of the fourth information refers to the related description of the transmission manner of the second information in S250, which is not described herein.

S370, the application function device adjusts the rate of the output data stream.

If the fourth information is used for indicating that the access network equipment can support the service quality parameter and the output guarantee rate of the service quality flow supported by the access network equipment at the third moment; the application function device may adjust the rate of the output data stream of the application function device to the output guaranteed rate of the quality of service stream supported by the access network device at the third time.

If the fourth information can be used for indicating that the access network equipment cannot support the service quality parameter and the output guarantee rate of the service quality flow supported by the access network equipment at the third moment; the application function device may adjust the rate of the output data stream of the application function device to be less than the output guaranteed rate of the quality of service stream supported by the access network device at the third time.

For a description of the application function device adjusting the rate of the output data stream, reference may be made to the related description in the method 200, which is not repeated here.

Optionally, in some embodiments, after S370, the application function device may further feed back to the terminal device a codec type or a compression algorithm corresponding to the data stream, so that the terminal device may decode or decompress the data stream sent by the access network device using the same codec type or compression algorithm.

For a description of the codec type or compression algorithm corresponding to the feedback of the data stream from the device to the terminal device, reference may be made to the related description in the method 200 above, which is not repeated here.

As can be seen from the communication method 300 described above, the information format is determined by the application function device, and the application function device carries the information format in the third information, and transmits the third information to the access network device via the core network device.

Optionally, in some embodiments, the information format may also be determined by the core network device, and the core network device carries the information format in the third information and transmits it to the access network device.

In this embodiment, S320, S311, S330 to S370 are specifically included.

Among them, S320 described in this embodiment differs from S320 described above in that: the third information referred to in S320 in this embodiment is used to indicate the first parameter, not to indicate the information format.

S311, the core network device determines the information format according to the first information, that is, the core network device obtains the information format according to the first parameter. For how the core network device obtains the information format according to the first parameter, reference may be made to the description related to S310 above, which is not repeated here.

S330 to S370 may be referred to the above description, and are not repeated here.

Alternatively, in other embodiments, the information format may also be determined by the access network device.

In this embodiment, S320, S330, S312, S340 to S370 are specifically included.

Among them, S320 and S330 described in this embodiment are different from S320 and S330 described above, respectively, in that: the third information referred to in S320 and S330 in this embodiment is used to indicate the first parameter, and is not used to indicate the fourth information.

S312, the access network device obtains the information format according to the third information, that is, the access network device obtains the information format according to the first parameter. For how the access network device obtains the information format according to the first parameter, reference may be made to the description related to S210 above, which is not repeated here.

S340 to S370 may be referred to the above description, and are not repeated here.

The communication method provided by the embodiment of the present application is described in detail based on fig. 3 and fig. 4. The following describes in detail the communication apparatus related to the execution of the communication method in fig. 3 to 4 based on fig. 5.

As shown in fig. 5, the embodiment of the application further provides a communication device 500. The communication device 500 comprises a processor 510, the processor 510 being coupled to a memory 520, the memory 520 being for storing computer programs or instructions or and/or data, the processor 510 being for executing the computer programs or instructions and/or data stored by the memory 520, such that the method in the above method embodiments is performed.

Optionally, the communication device 500 includes one or more processors 510.

Optionally, as shown in fig. 5, the communication device 500 may further include a memory 520.

Alternatively, the communications device 500 may include one or more memories 520.

Alternatively, the memory 520 may be integrated with the processor 510 or provided separately.

Optionally, as shown in fig. 5, the wireless communication device 500 may further include a transceiver 530, where the transceiver 530 is used for receiving and/or transmitting signals. For example, the processor 510 is configured to control the transceiver 530 to receive and/or transmit signals.

As an option, the communication apparatus 500 is configured to implement the operations performed by the access network device in the above method embodiment.

For example, the processor 510 is configured to implement the operations related to the processing performed by the access network device in the above method embodiment, and the transceiver 530 is configured to implement the operations related to the transceiving performed by the access network device in the above method embodiment.

Alternatively, the communication apparatus 500 is configured to implement the operations performed by the core network device in the above method embodiment.

For example, the processor 510 is configured to implement the operations related to the processing performed by the core network device in the above method embodiment, and the transceiver 530 is configured to implement the operations related to the transceiving performed by the core network device in the above method embodiment.

As yet another aspect, the communication apparatus 500 is configured to implement the operations performed by the application function device in the above method embodiment.

For example, the processor 510 is configured to implement the operations related to the processing performed by the application function device in the above method embodiment, and the transceiver 530 is configured to implement the operations related to the transceiving performed by the application function device in the above method embodiment.

The embodiment of the present application also provides a computer readable storage medium, on which computer instructions for implementing the method performed by the access network device in the above method embodiment, or computer instructions of the method performed by the core network device, or computer instructions of the method performed by the application function device are stored.

For example, the computer program when executed by a computer may enable the computer to implement the method performed by the access network device, or the core network device, or the application function device in the above-described method embodiments.

The embodiment of the application also provides a computer program product containing instructions, which when executed by a computer, cause the computer to implement the method executed by the access network device, the method executed by the core network device, or the method executed by the application function device in the above method embodiment.

The embodiment of the application also provides a communication system which comprises access network equipment, core network equipment and application function equipment.

Any of the explanation and beneficial effects of the related content in the wireless communication device provided above may refer to the corresponding method embodiments provided above, and are not repeated herein.

The embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided by the embodiment of the present application, as long as communication can be performed by the method provided according to the embodiment of the present application by running a program in which codes of the method provided by the embodiment of the present application are recorded. For example, the execution body of the method provided by the embodiment of the application may be an access network device or a location management function device, or may be a functional module in the access network device or the location management function device, which is capable of calling a program and executing the program.

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 solution. 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 application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. A method of communication, the method comprising:

the access network equipment acquires first delay time according to the received first information, wherein the first delay time is a time interval for feeding back second information to the core network equipment by the access network equipment, the second information is used for indicating the supporting capability of the access network equipment on service quality parameters, the service quality parameters are configured for a service quality flow by the core network equipment, the first delay time is determined based on a first parameter of a data flow, and the data flow corresponds to the service quality flow;

and sending the second information to core network equipment according to the first delay time under the condition that the notification control parameter is acquired and the supporting capability of the access network equipment for the service quality parameter is changed.

2. The communication method according to claim 1, wherein the first information is from the core network device or an application function device, the first information including the first parameter or the first lag time.

3. The communication method according to claim 1 or 2, wherein the first parameter comprises at least one of: packet delay budget, packet arrival period, packet size.

4. A communication method according to any of claims 1 to 3, wherein, in case the first information comprises the first parameter, the access network device obtains a first latency from the received first information, comprising:

and the access network equipment determines the first delay time according to the received first information.

5. A communication method according to claim 2 or 3, characterized in that,

in the case that the first information includes the first lag time, after the first information is determined by the application function device, the first information is sent to the access network device through the core network device; or alternatively, the process may be performed,

and in the case that the first information includes the first delay time, after the first information is determined by the core network device, sending the first information to the access network device.

6. A communication method according to any of claims 2 to 5, characterized in that the method further comprises:

the application function equipment receives the second information through the core network equipment;

and the application function equipment adjusts the rate of outputting the data stream by the application function equipment according to the second information.

7. A communication method according to any of claims 1 to 6, wherein the data flow is sent by the application function device to the access network device via the core network device, and wherein the quality of service flow is used for managing the data flow.

8. A communication method according to any of claims 1 to 7, characterized in that the quality of service parameter comprises the notification control parameter.

9. A communication device, the communication device comprising: a processor and a memory; the memory is used for storing a computer program; the processor configured to execute a computer program stored in the memory to cause the communication apparatus to perform the communication method according to any one of claims 1 to 8.

10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when run on a computer, causes the computer to perform the communication method according to any of claims 1 to 8.

11. A chip, comprising: processor for calling and running a computer program from a memory, so that a communication device on which the chip is mounted performs the communication method according to any one of claims 1 to 8.

12. A computer program product, the computer program product comprising: computer program which, when run by a computer, causes the computer to perform the communication method according to any one of claims 1 to 8.