WO2021243485A1

WO2021243485A1 - Communication method and communication apparatus

Info

Publication number: WO2021243485A1
Application number: PCT/CN2020/093614
Authority: WO
Inventors: 强鹂; 余芳
Original assignee: 华为技术有限公司
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2021-12-09
Also published as: CN115516903A

Abstract

Provided are a communication method and a communication apparatus. The method comprises: a UPF determining to perform local exchange, and the UPF requesting a second delay from an SMF and acquiring a third delay according to a first delay and the second delay, wherein the third delay comprises the delay of a stream transmitting from a talker to a second terminal device; and/or, the UPF determining that local exchange does not need to be performed, requesting a fourth delay from the SMF, and acquiring a fifth delay according to the first delay and the fourth delay, wherein the fifth delay comprises the delay of the stream from the talker to the UPF, a resident delay thereof in the UPF, and the delay thereof from the UPF to a TSN device. By using the embodiments of the present application, the delay of a stream transmitting from a talker to a second terminal device and/or the delay of the stream from the talker to a TSN device can be determined in a simple way, thereby determining the delay of transmission processing of the stream between a 5GS and the TSN device, and guaranteeing the transmission quality of the stream.

Description

Communication method and communication device

Technical field

This application relates to the field of communication technology, and in particular to a communication method and communication device.

Background technique

In the 3rd generation partnership project (3GPP) Time Sensitive Network (TSN) project, the 5th generation wireless systems (5GS) as a whole is regarded as a virtual Time-sensitive network (TSN) bridge. By superimposing the device side TSN translator (DS-TT) on the user equipment (UE) side and the network side TSN converter (network side TSN) on the user plane function (UPF) side respectively Translator, NW-TT) form, adapt to the external TSN network. In a distributed TSN network, TSN bridge equipment and terminal equipment complete functions such as path planning and resource reservation through various distributed protocols.

An important distributed resource reservation protocol in the TSN network is the multiple stream reservation protocol (MSRP). However, when the 5GS and TSN networks are interoperable, it is necessary to calculate the transmission and processing delay of the stream between the 5GS and TSN equipment. Therefore, when the 5GS and TSN networks are interoperable, determine the transmission and processing delay of the stream between the 5GS and TSN equipment, thus Ensuring the transmission quality of a stream is a technical problem being solved by those skilled in the art.

Summary of the invention

The embodiment of the present application discloses a communication method and a communication device, which can determine the time delay of a stream transmission processing between a 5GS and a TSN device, so as to ensure the transmission quality of the stream.

The first aspect of the embodiments of the present application discloses a communication method. The execution subject of the method may be a user plane function UPF network element, a network device including the UPF network element, or a chip applied to the network device. The following takes the execution subject of UPF as an example for description. The user plane function UPF network element receives first information, the first information is used to indicate a first delay, and the first delay includes the delay of the stream being transmitted from the stream service provider talker to the first terminal device, and the The dwell delay in the first terminal device; the UPF determines to perform a local exchange, the UPF requests a second delay from the session management function SMF network element, and according to the first delay and the second delay Delay to obtain a third delay, and the second delay includes the packet delay budget PDB value corresponding to the UPF uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session, and the third delay Including the delay of stream transmission from the talker to the second terminal device; and/or when the UPF determines that no local exchange is required, the UPF requests the SMF for a fourth delay, and according to the first delay and The fourth delay obtains the fifth delay, the fourth delay includes the PDB value corresponding to the uplink PDU session of the UPF, and the fifth delay includes the transmission of the stream from the talker to the UPF Time delay, residence time delay in the UPF, and transmission time delay from the UPF to a time-sensitive network TSN device.

For example, the first delay is X+a, the second delay is b+c, and the fourth delay is b. Correspondingly, UPF determines that local switching is required, and the third delay is obtained according to the first delay and the second delay. The delay is X+a+b+c; UPD determines that local switching is not required. According to the first delay and the fourth delay, the fifth delay is obtained as X+a+b+txPropogationDelay, where txPropogationDelay represents the flow from UPF to time Transmission delay of sensitive network TSN equipment.

In the above method, the UPF receives the first delay in the first information, and the first delay includes the delay of the stream being transmitted from the talker to the first terminal device, and the residence delay in the first terminal device, and determining After the local exchange is performed, according to the first delay and the PDB value corresponding to the uplink PDU session and the downlink PDU session of the UPF, the delay of the flow from the talker to the second terminal device is obtained. In this simple way, the UPF can obtain the flow from the second terminal device. The delay of the talker transmission to the second terminal device, and/or the UPF receiving the first delay in the first message, and after determining that local exchange is not required, according to the first delay and the PDB corresponding to the UPF uplink PDU session Obtain the delay of the stream from the talker to the UPF, the dwell delay in the UPF, and the transmission delay from the UPF to the TSN device. In this simple way, UPF can obtain the delay of the stream from the talker to the TSN device. , Which can ensure the transmission quality of the stream.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the UPF can request the second delay and/or the fourth delay from the SMF. The second delay and/or the fourth delay This is the transmission delay between the UPF and the terminal equipment UE. Therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

For example, the first delay may include the maximum transmission delay of the stream from the streaming service provider talker to the first terminal device, and the residence delay in the first terminal device.

The second aspect of the embodiments of the present application discloses a communication method. The execution subject of the method may be a user plane function UPF network element, a network device including the UPF network element, or a chip applied to the network device. The following takes the execution subject of UPF as an example for description. The user plane function UPF network element receives first information, where the first information is used to indicate a sixth delay, and the sixth delay includes the delay for the stream to be transmitted from the stream service provider talker to the UPF; the UPF Request a seventh delay from the session management function SMF network element, and obtain a third delay according to the sixth delay and the seventh delay, where the seventh delay includes the UPF downlink protocol data unit session PDU The packet delay budget PDB value corresponding to the session, and the third delay includes the delay of the stream being transmitted from the talker to the terminal device.

For example, the sixth delay is X, the seventh delay is c, and the UPF obtains the third delay as X+c according to the sixth delay and the seventh delay.

In the above method, the UPF receives the sixth delay in the first message, that is, the delay for the stream to be transmitted from the talker to the UPF, and after determining that no local exchange is required, it is based on the delay for transmission from the talker to the UPF and the UPF downlink PDU The PDB value corresponding to the session obtains the delay of the stream from the talker to the terminal device. In this simple way, UPF can add the transmission and processing of the stream from the UPF to the terminal device on the basis of the delay of the stream from the talker to the UPF. In order to obtain the delay of the stream from the talker to the terminal device, the transmission quality of the stream can be ensured.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the UPF can request the seventh delay from the SMF. The seventh delay is the transmission delay between the UPF and the terminal equipment UE. Therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

For example, the sixth delay may be the maximum transmission delay of the stream from the streaming service provider talker to the UPF.

The third aspect of the embodiments of the present application discloses a communication method. An example of the execution subject of the method is: if it is an uplink, the first device may be a terminal device or a chip applied to a terminal device; if it is a downlink The first device may be a UPF, or a network device including the UPF, or a chip applied to the network device.

Another example of the execution subject in the method disclosed in the third aspect of the embodiments of the present application is: both the first device and the second device may be terminal devices or chips applied to terminal devices.

The following describes an example where the execution subject is the first device. The first device receives first information, the first information is used to indicate delay A, and the delay A includes the delay of the stream being transmitted from the streaming service provider talker to the first device; the first device sends The session management function SMF network element sends a request message for requesting delay B. The delay B includes the bridge delay and the transmission delay of the flow from the second device to the second time-sensitive network TSN device; the first A device receives the delay B from the SMF; the first device obtains the delay C according to the delay A and the delay B, and the delay C includes the stream transmitted from the talker to the The delay of the second TSN device; the first device determines second information, and the second information includes the delay C; the first device sends the second information to the second device.

In the above method, the first device according to the delay A of the stream transmitted from the talker to the first device and the delay B from the SMF, and the delay B includes the delay of the bridge and the delay of the stream from the second device to the second TSN device. Transmission delay, so as to obtain the delay C of the stream from the talker to the second TSN device, and then the first device sends the second information to the second device. The second information includes the delay C, which is the updated delay. In this simple way, the first device determines the delay of the flow from the inbound interface of the 5GS system to the second TSN device, that is to say, only the first device, that is, the inbound interface device in the 5GS system is required to update the delay. No other network elements or equipment in the 5GS system are required for operation, which is simple and convenient.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the first device can request delay B by sending a request message to SMF. The delay B is the incoming interface device of the 5GS system, such as The transmission delay between the UPF and 5GS system outbound interface devices, such as the UE, therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

In an example, the sending of the request message by the first device to the session management function SMF network element includes: the request message sent by the first device to the SMF carries the delay A.

In another example, receiving the delay B from the SMF by the first device includes: receiving the delay B and the delay A from the SMF by the first device.

The fourth aspect of the embodiments of the present application discloses a communication method. An example of the execution subject of the method is: if it is an uplink, the second device may be a UPF, or a network device that includes UPF, or is applied to a network The chip in the device; if it is downlink, the second device may be a terminal device or a chip applied to the terminal device.

Another example of the execution subject in the method disclosed in the fourth aspect of the embodiments of the present application is: both the first device and the second device may be terminal devices or chips applied to terminal devices.

The following describes an example where the execution subject is the second device. The second device receives the first information, the first information is used to indicate the delay A, and the delay A includes the delay of the stream being transmitted from the streaming service provider talker to the first device; the second device reports to the session management The functional SMF network element sends a request message for requesting delay B. The delay B includes the bridge delay and the transmission delay of the flow from the second device to the second time-sensitive network TSN device; the second device Receiving the delay B sent by the SMF; the second device obtains the delay C according to the delay A and the delay B, and the delay C includes the stream being transmitted from the talker to the first Second, the delay of the TSN device; the second device determines second information, and the second information includes the delay C; the second device sends the second information to the second TSN device.

In the above method, the second device is based on the delay A of the stream transmitted from the talker to the first device and the delay B from the SMF. The delay B includes the bridge delay and the delay of the stream from the second device to the second TSN device. Transmission delay, so as to obtain the delay C of the stream from the talker to the second TSN device, and then the second device sends the second information to the second TSN device. The second information includes the delay C, which is the updated delay, In such a simple way, the second device determines the delay of the flow from the inbound interface of the 5GS system to the second TSN device, that is to say, only the second device, that is, the outbound interface device in the 5GS system, is required to update the delay. No other network elements or equipment in the 5GS system are required for operation, which is simple and convenient.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the second device can request delay B by sending a request message to the SMF. The delay B is flowed between the 5GS system inbound interface device and the 5GS The transmission delay between the outbound interface devices of the system, therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

In an example, the sending of the request message by the second device to the session management function SMF network element includes: the request message sent by the second device to the SMF carries the delay A.

In another example, that the second device receives the delay B sent by the SMF includes: the second device receives the delay B and the delay A sent by the SMF.

The fifth aspect of the embodiments of the present application discloses a communication method, and the execution subject of the method may be a terminal device or a chip applied to the terminal device. The following describes an example where the execution subject is the first terminal device. The first terminal device receives first information, where the first information is used to indicate an eighth delay, and the eighth delay includes the delay for the stream to be transmitted from the streaming service provider talker to the first terminal device; The first terminal device determines a first delay according to the eighth delay, and the first delay includes the delay of the stream being transmitted from the talker to the first terminal device, and the delay in the first terminal device The staying delay of; the first terminal device sends second information to the user plane function UPF network element, and the second information includes the first delay.

For example, the eighth delay is X, and the first terminal device determines that the first delay is X+a according to the eighth delay, and a represents the residence delay of the stream in the first terminal device.

In the above method, the first terminal device, that is, the inbound interface device in the 5GS system, determines the first delay according to the eighth delay when the stream is transmitted from the talker to the first terminal device. The first delay includes the stream being transmitted from the talker to the first terminal device. The delay of a terminal device and the delay of staying in the first terminal device, and then send the second information to the UPF. The second information includes the first delay, that is, the updated delay. In this simple way, The first terminal device updates the delay to ensure the transmission quality of the stream.

The sixth aspect of the embodiments of the present application discloses a communication method. The execution subject of the method may be a terminal device or a chip applied to the terminal device. The following describes an example where the execution subject is the second terminal device. The second terminal device receives first information, where the first information is used to indicate a third delay, and the third delay includes the delay of the stream being transmitted from the streaming service provider talker to the second terminal device; The second terminal device determines a ninth delay according to the third delay, and the ninth delay includes the delay of the stream being transmitted from the talker to the second terminal device, and the delay in the second terminal device. Resident delay and transmission delay from the second terminal device to the time-sensitive network TSN device.

The second terminal device sends second information to the TSN device, where the second information includes the ninth time delay.

For example, the third delay is X, and the second terminal device determines the ninth delay as X+a+txPropogationDelay according to the third delay, where a represents the residence delay of the stream in the second terminal device, and txPropogationDelay represents the stream from The transmission delay from the second terminal device to the TSN device.

In the above method, the second terminal device, that is, the outgoing interface device in the 5GS system, determines the ninth delay according to the third delay when the stream is transmitted from the talker to the second terminal device. The ninth delay includes the stream being transmitted from the talker to the second terminal device. Second, the delay of the terminal device, the dwell delay in the second terminal device, and the transmission delay from the second terminal device to the TSN device, and then send the second information to the TSN device, and the second information includes the ninth delay, That is, the updated delay. In such a simple manner, the second terminal device updates the delay to ensure the transmission quality of the stream.

The seventh aspect of the embodiments of the present application discloses a communication method. The execution subject of the method may be a session management function SMF, a network device including an SMF network element, or a chip applied to the network device. In the following, the execution subject is SMF as an example for description. The session management function SMF network element receives the request information from the user plane function UPF network element for requesting the second delay and/or the fourth delay; the SMF determines to perform a local exchange, and the SMF sends all the information to the UPF The second delay, the second delay includes the packet delay budget PDB value corresponding to the uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session of the UPF, and the second delay is used for The UPF obtains the third delay according to the first delay and the second delay, and the first delay includes the delay of the stream being transmitted from the streaming service provider talker to the first terminal device, and the delay in the first terminal device. The dwell delay in a terminal device, the third delay includes the delay of the stream being transmitted from the talker to the second terminal device; and/or the SMF determines that no local exchange is required, and the SMF sends the The UPF sends the fourth time delay, and the fourth time delay includes the PDB value corresponding to the uplink PDU session of the UPF.

For example, the first delay is X+a, and the second delay is b+c, where b represents the PDB value corresponding to the UPF uplink PDU session, and c represents the PDB value corresponding to the UPF downlink PDU session, SMF determines For local exchange, the SMF sends the second delay b+c to the UPF. Correspondingly, the SMF determines that no local exchange is required, and sends the fourth delay b to the UPF.

In the above method, after determining whether a local exchange is required through SMF, the second delay and/or the fourth delay are sent to the UPF to facilitate the UPF to obtain the third delay according to the first delay and the second delay. And/or, obtain a fifth delay according to the first delay and the fourth delay, so as to update the delay to ensure the transmission quality of the stream. In addition, in the prior art, if the stream is calculated from The delay of UPF transmission to the terminal equipment UE requires clock synchronization between two adjacent nodes between the UPF and the terminal equipment UE, and finally realizes the clock synchronization of all nodes between the UPF and the terminal equipment UE. The solution is complicated. It is not easy to implement, but in this solution, the second delay and/or the fourth delay are directly sent to the UPF through SMF, and the second delay and/or the fourth delay are the transmission between the UPF and the terminal equipment UE. Therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

The eighth aspect of the embodiments of the present application discloses a communication method. The execution subject of the method may be a session management function SMF, a network device including an SMF network element, or a chip applied to the network device. In the following, the execution subject is SMF as an example for description. The session management function SMF network element receives request information from the user plane function UPF for requesting the seventh delay; the SMF sends the seventh delay to the UPF, and the seventh delay includes the UPF downlink protocol The packet delay budget PDB value corresponding to the data unit session PDU session, the seventh delay is used by the UPF to obtain the third delay according to the sixth delay and the seventh delay, and the sixth delay It includes the delay of the stream being transmitted from the stream service provider talker to the UPF, and the third delay includes the delay of the stream being transmitted from the talker to the second terminal device.

For example, the seventh delay is c, the sixth delay is X, and the SMF sends the seventh delay c to the UPF. Accordingly, the UPF obtains the third delay as X+c according to the sixth delay and the seventh delay.

In the above method, the UPF obtains the third delay according to the sixth delay and the seventh delay of the flow from the talker to the UPF. The seventh delay includes the PDB value corresponding to the downlink PDU session of the UPF. The three delay includes the delay of the stream from the talker to the second terminal device. Then send the second information to the terminal device. The second information includes the third delay, that is, the updated delay. The delay is updated in such a simple way to ensure the transmission quality of the stream. In addition, in the prior art If the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the synchronization of all nodes between the UPF and the terminal equipment UE. Clock synchronization is complicated and difficult to implement. In this solution, the seventh delay is sent directly to the UPF through SMF. The seventh delay is the transmission delay between the UPF and the terminal equipment UE. Compared with technology, the solution of the embodiment of the present application is simpler and easier to implement.

For example, the sixth delay may include the maximum transmission delay of the stream from the streaming service provider talker to the UPF.

The ninth aspect of the embodiments of the present application discloses a communication method. The execution subject of the method may be a session management function SMF, a network device including an SMF network element, or a chip applied to the network device. In the following, the execution subject is SMF as an example for description. The session management function SMF network element receives a request message from the first device. The request message is used to request delay B. The delay B includes bridge delay and flow from the second device to the second time-sensitive network TSN Transmission delay of the device; the SMF sends the delay B to the first device, and the delay B is used by the first device to obtain the delay C according to the delay A and the delay B The delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device, and the delay C includes the delay of the stream being transmitted from the talker to the second TSN device.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, SMF directly sends a request to the first device for delay B. This delay B is the incoming interface device of the 5GS system, such as UPF and 5GS. The transmission delay between system outbound interface devices, such as UEs, therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

In an example, the request message of the first device carries the time delay A.

In another example, when the request message of the first device carries the delay A, sending the delay B by the SMF to the first device includes: sending the SMF to the first device The time delay B and the time delay A.

The tenth aspect of the embodiments of the present application discloses a communication method. The execution subject of the method may be a session management function SMF, a network device including an SMF network element, or a chip applied to the network device. In the following, the execution subject is SMF as an example for description. The session management function SMF network element receives a request message from the second device. The request message is used to request delay B. The delay B includes bridge delay and flow from the second device to the second time sensitive Transmission delay of the network TSN device; the SMF sends the delay B to the second device; the delay B is used by the second device to obtain the delay C according to the delay A and the delay B The delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device, and the delay C includes the delay of the stream being transmitted from the talker to the second TSN device.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, SMF directly sends a request delay B to the second device. The delay B is the incoming interface device of the 5GS system, such as UPF and 5GS. The transmission delay between system outbound interface devices, such as UEs, therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

In an example, the request message of the second device carries the time delay A.

In another example, when the request message of the second device carries the delay A, the SMF sending the delay B to the second device includes: sending the SMF to the second device The time delay B and the time delay A.

The eleventh aspect of the embodiments of the present application discloses a communication device. For beneficial effects, see the first aspect, the second aspect, the third aspect, the fourth aspect, the seventh aspect, the eighth aspect, the ninth aspect, or the tenth aspect. The description of is not repeated here. The communication device has the function of realizing the behaviors in the method examples of the first aspect, the second aspect, the third aspect, the fourth aspect, the seventh aspect, the eighth aspect, the ninth aspect, or the tenth aspect. The functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible design, the communication device includes: a transceiver module, configured to receive first information, where the first information is used to indicate a first delay, and the first delay includes a streaming service provider talker The delay of transmission to the first terminal device and the delay of staying in the first terminal device; the processing module is used to perform a local exchange when determining to request the second delay from the session management function SMF network element, according to The first delay and the second delay obtain a third delay, and the second delay includes the packet time corresponding to the uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session of the device Delay budget PDB value, the third delay includes the delay of the stream being transmitted from the talker to the second terminal device; and/or it is determined that no local exchange is required, the fourth delay is requested from the SMF, and the fourth delay is determined according to the first A delay and the fourth delay acquire a fifth delay, where the fourth delay includes the PDB value corresponding to the uplink PDU session of the device, and the fifth delay includes the stream transmitted from the talker to The delay of the device, the residence delay in the device, and the transmission delay from the device to the time-sensitive network TSN device. These modules can perform the corresponding functions in the method example of the first aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In another possible design, the communication device includes: a transceiver module, configured to receive first information, where the first information is used to indicate a sixth delay, and the sixth delay includes a streaming service provider The delay of the talker transmission to the device; the processing module is configured to request the seventh delay from the session management function SMF network element, and obtain the third delay according to the sixth delay and the seventh delay, The seventh delay includes the packet delay budget PDB value corresponding to the downlink protocol data unit session PDU session of the device, and the third delay includes the delay of the stream being transmitted from the talker to the second terminal device. These modules can perform the corresponding functions in the above-mentioned method example of the second aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In another possible design, the communication device includes: a transceiver module, configured to receive first information, the first information is used to indicate a delay A, and the delay A includes stream transmission from a streaming service provider talker The delay to the device; the transceiver module is configured to send a request message to the session management function SMF network element for requesting delay B. The delay B includes the bridge delay and the flow from the second device to the The transmission delay to the second time-sensitive network TSN device and the reception of the delay B from the SMF; the processing module is configured to obtain the delay C according to the delay A and the delay B, The delay C includes the delay of the stream being transmitted from the talker to the second TSN device; the apparatus determines second information, and the second information includes the delay C; the transceiver module also uses Yu sends the second information to the second device. These modules can perform the corresponding functions in the method example of the third aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In another possible design, the communication device includes: a transceiver module, configured to receive first information, the first information is used to indicate a delay A, and the delay A includes stream transmission from a streaming service provider talker The delay to the first device; the transceiver module is also used to send a request message to the session management function SMF network element for requesting delay B. The delay B includes the bridge delay and the flow from the device The transmission delay to the second time-sensitive network TSN device and the delay B for receiving the SMF transmission; a processing module for obtaining the delay C according to the delay A and the delay B , The delay C includes the delay of the stream being transmitted from the talker to the second TSN device; and is used to determine second information, the second information includes the delay C; the transceiver module, and Used to send the second information to the second TSN device. These modules can perform the corresponding functions in the above-mentioned method example of the fourth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In another possible design, the communication device includes: a transceiver module, configured to receive request information from a user plane function UPF network element, for requesting the second delay and/or the fourth delay; a processing module, using When it is determined to perform a local exchange, the transceiver module is configured to send the second delay to the UPF, and the second delay includes the uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session of the UPF. The corresponding packet delay budget PDB value, the second delay is used by the UPF to obtain the third delay according to the first delay and the second delay, and the first delay includes streaming service provision The delay of the talker transmission to the first terminal device and the residence delay in the first terminal device, the third delay including the delay of the stream being transmitted from the talker to the second terminal device; and / Or the processing module is configured to determine that no local exchange is required, the transceiver module is configured to send the fourth delay to the UPF, and the fourth delay includes the uplink PDU session of the UPF The corresponding PDB value. These modules can perform the corresponding functions in the method example of the seventh aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In another possible design, the communication device includes: a transceiver module for receiving request information from the user plane function UPF and for requesting a seventh time delay; the transceiver module sends the seventh time to the UPF The seventh delay includes the packet delay budget PDB value corresponding to the session PDU session of the UPF downlink protocol data unit, and the seventh delay is used by the UPF according to the sixth delay and the first Seven delays: Obtain a third delay, where the sixth delay includes the delay of the stream being transmitted from the stream service provider talker to the UPF, and the third delay includes the delay of the stream being transmitted from the talker to the second terminal device Time delay. These modules can perform the corresponding functions in the method example of the eighth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In another possible design, the communication device includes: a transceiver module, configured to receive a request message from the first device, the request message is used to request delay B, and the delay B includes bridge delay and The transmission delay of the flow from the second device to the second time-sensitive network TSN device; the transceiver module is configured to send the delay B to the first device, and the delay B is used for the first device. The device obtains the delay C according to the delay A and the delay B, where the delay A includes the delay of the stream being transmitted from the streaming service provider talker to the first device, and the delay C includes the streaming slave The transmission delay of the talker to the second TSN device. These modules can perform the corresponding functions in the above-mentioned method example of the ninth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In another possible design, the communication device includes: a transceiver module, configured to receive a request message from a second device, the request message is used to request delay B, and the delay B includes bridge delay and The transmission delay of the stream from the second device to the second time-sensitive network TSN device; the transceiver module is used to send the delay B to the second device; the delay B is used for the The second device obtains the delay C according to the delay A and the delay B, where the delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device, and the delay C includes the stream from the The delay of talker transmission to the second TSN device. These modules can perform the corresponding functions in the method example of the tenth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

The twelfth aspect of the embodiments of the present application discloses a communication device. For beneficial effects, reference may be made to the third aspect, and the description of the fourth, fifth, or sixth aspect will not be repeated here. The communication device has the function of realizing the behaviors in the method examples of the third aspect, the fourth aspect, the fifth aspect, or the sixth aspect. The functions can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible design, the communication device includes: a transceiver module, configured to receive first information, where the first information is used to indicate an eighth delay, and the eighth delay includes a streaming service provider talker The delay of transmission to the device; a processing module, configured to determine a first delay according to the eighth delay, the first delay including the delay of the stream being transmitted from the talker to the first terminal device , And the residence delay in the device; the transceiver module is configured to send second information to a user plane function UPF network element, the second information includes the first delay. These modules can perform the corresponding functions in the above-mentioned method example of the fifth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In a possible design, the communication device includes: a transceiver module, configured to receive first information, the first information is used to indicate a third delay, and the third delay includes a streaming service provider talker The delay of transmission to the device; the processing module is configured to determine a ninth delay according to the third delay, and the ninth delay includes the delay of the stream being transmitted from the talker to the device, The residence delay in the device and the transmission delay from the device to the time-sensitive network TSN device. These modules can perform the corresponding functions in the above-mentioned method example of the sixth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

The thirteenth aspect of the embodiments of the present application discloses a communication device. The communication device may be the terminal device in the foregoing method embodiment, or a chip set in the terminal device. The communication device includes a communication interface, a processor, and optionally, a memory. Wherein, the memory is used to store a computer program or instruction, and the processor is coupled with the memory and a communication interface. When the processor executes the computer program or instruction, the communication device executes the method executed by the terminal device in the foregoing aspects.

The fourteenth aspect of the embodiments of the present application discloses a communication device. The communication device may be the network device in the above aspects, or a chip set in the network device, or a network device including UPF network elements, or UPF network elements are either SMF network elements or network equipment including SMF network elements. The communication device includes a communication interface, a processor, and optionally, a memory. The memory is used to store a computer program or instruction, and the processor is coupled with the memory and a communication interface. When the processor executes the computer program or instruction, the communication device executes the method executed by the network device in the above aspects.

The fifteenth aspect of the embodiments of the present application discloses a computer program product. The computer program product includes a computer program, which, when the computer program is executed, causes the methods executed by the terminal device in the foregoing aspects to be executed.

The sixteenth aspect of the embodiments of the present application discloses a computer program product. The computer program product includes: a computer program. When the computer program is executed, the network equipment, the UPF network element, or the SMF The method executed by the network element is executed.

The seventeenth aspect of the embodiments of the present application discloses a chip system. The chip system includes a processor for implementing the functions of the terminal-side device in the methods of the foregoing aspects. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

The eighteenth aspect of the embodiments of the present application discloses a chip system, which includes a processor, and is configured to implement the functions of the network side device in the methods of the foregoing aspects. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

The nineteenth aspect of the embodiments of the present application discloses a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the terminal-side device in the above aspects is implemented.

The twentieth aspect of the embodiments of the present application discloses a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the network-side device in the above aspects is implemented.

The twenty-first aspect of the embodiments of the present application discloses a communication system, which includes the devices described in the eleventh aspect and the twelfth aspect, or includes the devices described in the thirteenth aspect and the fourteenth aspect.

Description of the drawings

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a flow chart of an MSRP provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a delay update of an MSRP process provided by an embodiment of the present application;

Figure 4-a is a 5GS system architecture diagram provided by an embodiment of the present application;

Figure 4-b is a 5GS system architecture diagram provided by an embodiment of the present application;

Figure 4-c is a 5GS system architecture diagram provided by an embodiment of the present application;

Figure 4-d is a 5GS system architecture diagram provided by an embodiment of the present application;

FIG. 5 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 6 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 7 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 8 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 9 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 10 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 11 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

detailed description

The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a communication system 1000 provided by an embodiment of the present application. The communication system 1000 includes a time-sensitive network (time-sensitive network, TSN) device 1001, and a fifth-generation mobile communication technology system ( the 5th generation wireless systems, 5GS) 1008 and TSN equipment 1007, TSN equipment 1001 and TSN equipment 1007 can be programmable logic controllers, data acquisition devices, etc. that can be connected to the Ethernet, except for 5GS between TSN equipment 1001 and TSN equipment 1007 In addition to the system, there can be switches, routers, bridges, etc. with time-sensitive network functions, and the number can be zero, one, or more. The stream can reach the TSN device 1007 from the TSN device 1001 via the 5GS system, and can also reach the TSN device 1001 from the TSN device 1007 via the 5GS system. Among them, the 5GS system 1008 includes a device-side time-sensitive network translator (DS-TT) 1002, a user equipment (UE) 1003, and the UE may also be called a terminal device or a user plane. Function (user plane function, UPF) network element 1004, network side time sensitive network translator (NW-TT) 1005, and session management (session management function, SMF) network element 1006. DS-TT can be embedded or externally hung in the UE, NW-TT can be embedded or externally hung in the UPF, this method is not limited. UPF is a data plane network element, and access and mobility management functions (AMF) and SMF are control plane network elements. The UE can establish multiple protocol data unit (protocol data unit, PDU) sessions (sessions), and data belonging to the session is transmitted between the radio access network function entity (radio access network, RAN) and the UPF through the PDU session. AMF is responsible for mobility management and is connected to the RAN. SMF is responsible for session management and is connected to UPF. The policy control function (PCF) network element is responsible for policy control and is connected to the SMF. The flow involved in the embodiment of this application may be a quality of service (QoS) flow. The QoS flow may be a QoS flow with deterministic transmission requirements.

It should be understood that the embodiment of the present application is not limited to the system architecture shown in FIG. 1. For example, the communication system to which the communication method of the embodiment of the present application can be applied may include more or fewer network elements or devices. The device or network element in Figure 1 can be hardware, software that is functionally divided, or a combination of the two. The devices or network elements in Figure 1 can communicate with other devices or network elements.

Time-sensitive network TSN is a new-generation network standard based on Ethernet, with functions such as time synchronization and delay guarantee to ensure real-time performance. In the 3rd generation partnership project (3GPP) TSN, the 5GS system as a whole is regarded as a virtual TSN bridge (virtual TSN bridge). By superimposing the functional module DS-TT on the UE side and the UPF side superimposing the functional module NW-TT, it adapts to the external TSN system. In a distributed TSN system, TSN bridge equipment (including traditional TSN bridges and 5GS systems that are virtual TSN bridges) and terminal equipment complete functions such as path planning and resource reservation through various distributed protocols. An important distributed resource reservation protocol in the TSN system is the multiple stream reservation protocol (MSRP).

The working principle of MSRP is as follows: In order to ensure the quality of data transmission, the streaming service provider talker can use MSRP to reserve bandwidth resources of all bridges experienced along the way from the talker to the listener before sending the stream to the streaming service receiver listener. For the convenience of understanding, talker and listener can be terminal devices, as shown in Figure 2, which shows the flow chart of MSRP, as follows:

First, the talker sends a Talker Advertise Declaration (Talker Advertise Declaration) message. The message includes one or more parameters. Among them, the message includes the traffic characteristic TrafficSpec of the stream, such as the amount of bandwidth required by the stream, the sending period, etc. Etc., the message may also include an accumulated delay field (Accumulated Latency), which is used to describe accumulated delay information. Then bridge 1, bridge 2, or other bridges on the path between talker and listener receive the talker's streaming service provider broadcast statement message, and judge whether the local remaining available resources meet the resource reservation requirements according to the TrafficSpec . If the demand for resource reservation cannot be met, the stream service provider that forwards the talker no longer broadcasts the announcement message; if the demand for resource reservation can be met, the value of the cumulative delay field is updated, and the talker continues to be forwarded downstream The streaming service provider broadcasts an announcement message. After the listener receives the broadcast announcement message from the talker's streaming service provider, it judges whether the time spent on the path from the talker to the listener can be accepted by the application layer according to the value of the cumulative delay field. If it can be accepted, the listener replies back along the path with a Listener Ready Declaration (Listener Ready Declaration) message. Then bridge 1, bridge 2, or other bridges on the path between talker and listener perform the actual resource reservation after receiving the stream service receiver ready to declare message, and continue to forward the stream service receiver upstream Prepare to declare the message. After the talker receives the ready announcement message from the stream service recipient, it determines that the resource reservation process has ended, and the talker starts to send the stream.

As shown in Figure 3, Figure 3 shows the delay update of the MSRP process. From talker to listener, go through bridge 1 (ordinary bridge) and 5G bridge (5GS system). Talker sends a stream service provider broadcast statement message to bridge 1. The initial value of the cumulative delay field in the message is a, a represents the maximum possible time-consuming flow from the outgoing interface of talker to the incoming interface of bridge 1. After bridge 1 receives the broadcast announcement message from the streaming service provider, it adds b to the initial value a of the accumulated delay domain. b represents the maximum possibility of the flow from the inbound interface of bridge 1 to the inbound interface of 5G bridge Time-consuming; after the 5G bridge receives the broadcast announcement message from the streaming service provider, it adds c to the a+b of the accumulated delay domain, where c represents the flow from the inbound interface of the 5G bridge to the inbound interface of the listener Most likely to be time-consuming.

As mentioned above, as a virtual bridge, the 5GS system as a whole, after receiving the broadcast announcement message from the streaming service provider, needs to accumulate from the 5GS system’s inbound interface to the next hop device’s inbound interface on the basis of the accumulated delay threshold. The maximum time consumption between the next hop device can be the next hop of the 5GS system, and the maximum time consumption from the inbound interface of the 5GS system to the inbound interface of the next hop device can be recorded as T. Since there are multiple possible architectures in the 5GS system, as shown in Figure 4-a, Figure 4-b, Figure 4-c, and Figure 4-d, Figure 4-a shows the flow from UE in to UPF; Figure 4- b indicates that the flow enters from the UPF to the UE; Figure 4-c indicates that the flow enters from the UE, and then exits from the same UE after bypassing the UPF; Figure 4-d indicates that the flow enters from UE1, and then exits from UE2 after bypassing the UPF. The value of T is different in different architectures. Based on the existing research of the 3rd generation partnership project release 16, 3GPP Rel-16, the control plane network element AMF and SMF in 5GS determine all the components The elements of T include UE-DS-TT Residence Time, packet delay budget (PDB) value, bridge delay 5GS bridge delay and txPropogationDelay. Among them, UE-DS-TTresidence time is flow in DS- The total time consumed for transmission and processing between TT and UE. The PDB value is the transmission and processing delay between the UPF and the UE (which may include the processing delay within the UPF), as shown in Figure 4-c and Figure 4. In the -d architecture, the 5GS bridge delay is the sum of the PDB value corresponding to the UPF uplink PDU session and downlink PDU session and the two UE-DS-TT Residence Time of the inbound and outbound interfaces, as shown in Figure 4-a and Figure 4- In the architecture of b, 5GS bridge delay is the sum of the PDB value corresponding to the uplink or downlink PDU session and the inbound or outbound interface UE-DS-TT Residence Time, and txPropogationDelay is the flow from the outbound interface of the 5GS system to the inbound interface of the next hop device The biggest time-consuming. Based on the existing research results of the 3GPP Release 16 protocol, the network element UPF (including NW-TT) or UE (including DS-TT) corresponding to the outbound interface in the 5GS system can use the IEEE 802.1Q protocol to obtain the value of txPropogationDelay. Therefore, txPropogationDelay is known information for the outgoing interface network element in the 5GS system. In addition, each UE knows its own UE-DS-TT residence time value, so the data plane network element UE and UPF in 5GS do not know the PDB value and the 5GS bridge delay value. Therefore, how to determine the transmission processing delay of the stream between the 5GS system and the TSN device when the 5GS and TSN networks are interoperable, so as to ensure the transmission quality of the stream, is a technical problem to be solved by those skilled in the art.

Please refer to FIG. 5. FIG. 5 is a communication method provided by an embodiment of the present application. The method shown in FIG. 5 can be applied to the architecture of FIG. 4-c or FIG. 4-d. The method includes but is not limited to the following steps:

Step S501: The time-sensitive network TSN device or the streaming service provider talker sends the first information to the first terminal device.

Step S502: The first terminal device receives the first information from the time-sensitive network TSN device or the streaming service provider talker.

Specifically, the first information is used to indicate the eighth delay, and the eighth delay includes the delay for the stream to be transmitted from the talker of the streaming service provider to the first terminal device. For example, the eighth delay is the delay for the stream to be transmitted from the talker to the first terminal device. The maximum transmission delay of the terminal device. Talker refers to the host or server that provides the stream, and is the source of the stream. Among them, the first terminal device refers to the inbound interface device streaming in the 5GS system.

Specifically, the first information may be carried in a streaming service provider broadcast declaration (Talker Advertise Declaration) message. The stream service provider's broadcast announcement message can be used to broadcast the corresponding QoS requirements of the stream.

Specifically, in addition to the first information, the stream service provider broadcast declaration message may also carry a stream identity (Stream ID). In addition, the streaming service provider broadcast statement message can also carry one or more of the following information: destination_address, source address (source_address), maximum frame size (MaxFrameSize), maximum frame interval (MaxIntervalFrames), frame information Priority (PriorityAndRank), the maximum allowable delay for a single frame of the stream to be transmitted from the talker to the listener, the reliability requirements of the stream or the reason for the failure of resource reservation (FailureInformation).

For example, the first terminal device receives first information, and the first information is used to indicate the eighth delay X.

Step S503: The first terminal device determines the first time delay according to the eighth time delay.

Specifically, the first delay includes the delay of the stream being transmitted from the talker to the first terminal device, and the resident delay in the first terminal device. For example, the first delay is the maximum transmission delay for the stream to be transmitted from the talker to the first terminal device and the residence delay in the first terminal device. The residency delay of the stream in the first terminal device refers to the transmission and processing delay of the stream in the first terminal device. It can also be referred to as the maximum time consumption of the stream in the first terminal device. It can also be the stream in the device. The total time consumed for transmission and processing between the side delay-sensitive network converter DS-TT and the UE, for example, the residency delay in the first terminal device is UE-DS-TT residence time.

Specifically, a possible manner for the first terminal device to determine the first delay according to the eighth delay includes: the first terminal device adds a predefined or default value to the eighth delay to obtain the first delay. Delay, the predefined or default value may be the residence delay of the stream in the first terminal device. Of course, the first terminal device may also determine the first delay according to the eighth delay in other ways, which is not limited in the embodiment of the present application.

For example, if the eighth delay is X, then the first terminal device adds a to the eighth delay X, so that the first delay is X+a, where X represents the stream transmitted from the talker to the first The delay of the terminal device, a represents the resident delay of the stream in the first terminal device.

Step S504: The first terminal device sends the second information to the user plane function UPF network element.

Specifically, the second information includes the first time delay. The second information may be carried in a Talker Advertise Declaration message of the streaming service provider.

For example, after the first terminal device determines the first delay, the eighth delay in the streaming service provider announcement message received by the first terminal device may be modified to the first delay, and then the first terminal device sends the modification to the UPF The subsequent streaming service provider broadcasts the announcement message. That is, the first terminal device may send the second information to the UPF through the streaming service provider broadcast announcement message, and the second information includes the first delay.

Step S505: The UPF receives the second information from the first terminal device.

Specifically, the second information is used to indicate the first delay, and the first delay includes the delay of the stream being transmitted from the talker to the first terminal device and the residence delay in the first terminal device.

For example, the UPF receives the second information from the first terminal device, the second information is used to indicate the first delay, and the first delay is (X+a), where X refers to the stream transmitted from the talker to the first terminal The delay of the device, a refers to the resident delay of the stream in the first terminal device.

Step S506: UPF determines to perform local exchange.

Specifically, the local exchange may mean that the UPF receives the second information from the first terminal device and sends the third information to the first terminal device, where the second information includes the delay of the stream from the talker to the first terminal device, and The resident delay in the first terminal device, and the third information includes the delay of the stream being transmitted from the talker to the outbound interface device of the 5GS, that is, the first terminal device. Alternatively, the local exchange may also mean that the UPF receives the second information from the first terminal device and sends the third information to the second terminal device, where the second information includes the delay of the stream transmitting from the talker to the first terminal device, and the The resident delay in the first terminal device, and the third information includes the delay of the stream being transmitted from the talker to the second terminal device.

For example, as shown in Figure 4-c, suppose the UPF receives the second information from the terminal equipment UE and sends the third information to the terminal equipment UE, and the second information includes the delay of the stream from the talker to the terminal equipment UE. , And the staying delay in the terminal equipment UE, the third information includes the delay of the flow from the talker to the UE, and the UPF determines to perform the local exchange. Or, as shown in Figure 4-d, if the UPF receives the second information from the terminal device UE1 and sends the third information to the terminal device UE2, the second information includes the delay of the stream from the talker to the terminal device UE1, and The staying delay in the terminal equipment UE1, and the third information includes the delay of the flow from the talker to the UE2, then the UPF determines to perform the local exchange.

Step S507: UPF sends a request message to the session management function SMF network element to request the second delay.

Step S508: The SMF receives the request message from the UPF, and sends the second time delay to the UPF.

Specifically, the second delay includes a packet delay budget (PDB) value corresponding to the UPF uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session. Among them, the PDB value is the transmission delay of the flow between the UPF and the UE as determined by the 5G QoS identifier (5G QoS identifier, 5QI). The PDB value corresponding to the uplink PDU session can be the maximum transmission of the flow from the UE to the UPF. Delay, the PDB value corresponding to the downlink PDUsession may be the maximum transmission delay for the stream to be transmitted from the UPF to the UE. The PDB value corresponding to the uplink PDU session or the PDB value corresponding to the downlink PDU session may include the processing delay of the flow within the UPF.

For example, UPF sends request information to SMF. The request information is used to request a second delay. Correspondingly, after receiving the request information from UPF, SMF sends the second delay to UPF. The second delay can be the uplink of UPF. The sum of the PDB value b corresponding to the PDU session and the PDB value c corresponding to the downlink PDU session of the UPF, namely (b+c), or the second delay can be the PDB value b and UPF corresponding to the uplink PDU session of the UPF The PDB value c corresponding to the downlink PDU session is (b, c). Correspondingly, the second delay (b+c) or (b, c) for the UPF to receive the SMF.

Step S509: UPF receives the second time delay from SMF.

Step S510: The UPF obtains the third time delay according to the first time delay and the second time delay.

Specifically, the first delay includes the delay of the stream being transmitted from the streaming service provider talker to the first terminal device, and the resident delay in the first terminal device. The second delay includes the PDB value corresponding to the uplink PDU session and the downlink PDU session of the UPF, and the third delay includes the delay of the flow from the talker to the second terminal device. For example, the third delay is the maximum transmission delay for the stream to be transmitted from the talker to the second terminal device.

Specifically, a possible implementation manner in which the UPF obtains the third delay according to the first delay and the second delay may include: the UPF determines the sum of the first delay and the second delay as the third delay , So as to obtain the third time delay. Of course, UPF can also obtain the third delay based on the first delay and the second delay in other ways. For example, after the UPF adds the first delay and the second delay, the sum obtained by the addition can be performed Correct (for example, add a specified or default value) to obtain the third delay. The embodiment of the present application does not limit the manner of obtaining the third delay based on the first delay and the second delay.

For example, if the first delay is X+a and the second delay is b+c, then UPF obtains the third delay as X+a+b according to the first delay X+a and the second delay b+c +c.

Step S511: The UPF sends the third information to the second terminal device.

Specifically, the third information is used to indicate the third delay, where the second terminal device may be the outbound interface device UE that flows in the 5GS system.

Specifically, the third information may be carried in the broadcast announcement message of the streaming service provider.

For example, after UPF determines the third delay, it can modify the first delay in the streaming service provider announcement message received by UPF to the third delay, and then UPF sends the modified streaming service provider to the second terminal device Broadcast announcement message. In other words, the UPF network element may send the third information to the second terminal device through the broadcast announcement message of the streaming service provider, and the third information includes the third delay.

Step S512: The second terminal device receives the third information from the UPF.

Specifically, the third information is used to indicate the third delay, and the third delay includes the delay of the stream being transmitted from the talker to the second terminal device. For example, the third delay is the maximum transmission delay for the stream to be transmitted from the talker to the second terminal device.

For example, the second terminal device receives the third information from the UPF, and the third information is used to indicate the third delay X+a+b+c.

Step S513: The second terminal device determines a ninth time delay according to the third time delay.

Specifically, the ninth delay includes the delay of the stream being transmitted from the talker to the second terminal device, the resident delay in the second terminal device, and the transmission delay from the second terminal device to the time-sensitive network TSN device. For example, the ninth delay is the maximum transmission delay of the stream from the talker to the second terminal device, the residence delay in the second terminal device, and the transmission delay from the second terminal device to the time-sensitive network TSN device. The resident delay of the stream in the second terminal device can be the transmission and processing delay of the stream in the second terminal device, or the maximum time consumption of the stream in the second terminal device, or it can be the stream on the device side. The total time-consuming transmission and processing between the delay-sensitive network converter DS-TT and the UE.

Specifically, a possible way for the second terminal device to determine the ninth delay according to the third delay includes: the second terminal device adds a predefined or default value to the third delay to obtain the ninth delay. Delay, the predefined or default value may be the residence delay of the stream in the second terminal device and the transmission delay from the second terminal device to the TSN device. Of course, the second terminal device may also determine the ninth delay based on the third delay in other ways, which is not limited in the embodiment of the present application.

For example, if the third delay is X+a+b+c, the second terminal device adds d+txPropogationDelay to the third delay X+a+b+c to obtain the ninth delay X+ a+b+c+d+txPropogationDelay, where X+a+b+c represents the delay of the stream from the talker to the second terminal device, d represents the residence delay of the stream in the second terminal device, and txPropogationDelay represents The transmission delay of the stream from the second terminal device to the TSN device.

Step S514: The second terminal device sends the fourth information to the time-sensitive network TSN device.

Specifically, the fourth information includes the ninth time delay, where the TSN device may be the TSN device 2 in FIG. 4-c, and may also be the TSN device 2 in FIG. 4-d. The fourth information may be carried in a Talker Advertise Declaration message of the streaming service provider.

For example, after the second terminal device determines the ninth delay, the third delay in the streaming service provider broadcast announcement message received by the second terminal device may be modified to the ninth delay, and then the second terminal device sends to the TSN device The modified streaming service provider broadcasts an announcement message. That is, the second terminal device may send the fourth information to the TSN device through the streaming service provider broadcast announcement message, and the fourth information includes the ninth time delay.

Step S515: The TSN device receives the fourth information from the second terminal device.

Specifically, the fourth information includes the ninth time delay.

In the above method, the first terminal device determines the first delay according to the eighth delay from the first information, and then sends the second information to the UPF. The second information includes the first delay. Accordingly, the UPF receives the first delay from the The second information of a terminal device, and the third delay is obtained according to the first delay in the second information and the second delay from the SMF, and then the UPF sends the third information to the second terminal device. The third information includes The third delay, correspondingly, the second terminal device receives the third delay from the UPF, determines the ninth delay according to the third delay, and then sends the fourth information to the TSN device, and the fourth information includes the ninth delay , Through such a simple way to update the delay, thereby ensuring the quality of stream transmission.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the SMF directly sends the second delay to the UPF. The second delay is the transmission delay between the UPF and the terminal equipment UE. Compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

Please refer to FIG. 6. FIG. 6 is a communication method provided by an embodiment of the present application. The method shown in FIG. 6 can be applied to the architecture of FIG. 4-a. The method includes but is not limited to the following steps:

Step S601-Step S605 can refer to step S501-Step S505, which will not be repeated here.

Step S606: UPF determines that no local exchange is needed.

Specifically, local exchange may mean that the UPF receives the first information from the first terminal device and sends the second information to the first terminal device, where the first information includes the stream transmitted from the talker to the inbound interface device of the 5GS, that is, the first The delay of a terminal device and the resident delay in the first terminal device. The second information includes the delay of the stream transmitted from the talker to the outbound interface device of the 5GS, that is, the delay of the first terminal device. Alternatively, local exchange may also mean that the UPF receives the first information from the first terminal device and sends the second information to the second terminal device, where the first information includes the delay of the stream transmitting from the talker to the first terminal device, and The resident delay in the first terminal device, and the second information includes the delay of the stream being transmitted from the talker to the second terminal device.

For example, as shown in Figure 4-a, the UPF receives the first information from the first terminal device, where the first information includes the inbound interface device of the stream transmitted from the talker to the 5GS, that is, the delay of the first terminal device and the The resident delay in the first terminal device, but the second information is not sent to a terminal device, or the second information is not sent to the second terminal device. The second information includes the stream transmitted from the talker to the outbound interface device of the 5GS, That is, the delay of the first terminal device or the delay of the stream transmission from the talker to the second terminal device, the UPF determines that no local exchange is required.

Step S607: UPF sends a request message to the session management function SMF network element to request the fourth delay.

Step S608: The SMF receives the request message from the UPF, and sends the fourth time delay to the UPF.

Specifically, the fourth delay includes the PDB value corresponding to the uplink PDU session of the UPF, where the PDB value is the transmission delay between the UPF and the UE as determined by the 5G QoS identifier (5QI). The PDB value corresponding to the PDU session may be the maximum transmission delay of the flow from the UE to the UPF. The PDB value may include the processing delay of the flow inside the UPF.

For example, UPF sends request information to SMF, the request information is used to request the fourth delay, SMF receives the request information, and sends the fourth delay b to UPF, correspondingly, UPF receives the fourth delay b from SMF.

Step S609: UPF receives the fourth time delay from SMF.

Step S610: the UPF obtains the fifth time delay according to the first time delay and the fourth time delay.

Specifically, the first delay includes the delay of the stream being transmitted from the talker to the first terminal device, and the resident delay in the first terminal device. The fifth delay includes the transmission delay of the stream from the talker to the UPF, the residence delay in the UPF, and the transmission delay from the UPF to the time-sensitive network TSN device.

Specifically, a possible implementation manner in which the UPF obtains the fifth delay according to the first delay and the fourth delay may include: after the UPF adds the first delay and the fourth delay, the sum can be obtained by adding The sum is corrected (for example, a specified or default value is added) to obtain the fifth delay. The embodiment of the present application does not limit the manner of obtaining the fifth delay based on the first delay and the fourth delay.

For example, if the first delay is X+a, and the fourth delay is b, where X represents the delay of the stream being transmitted from the talker to the first terminal device, and a represents the residence delay of the stream in the first terminal device. , The UPF calculates the sum of the first delay and the fourth delay as X+a+b. Since the UPF is an outgoing interface network element, txPropogationDelay is added on the basis of X+a+b, where txPropogationDelay represents the flow from The transmission delay from the UPF to the TSN device is finally obtained as the fifth delay as X+a+b+txPropogationDelay.

Step S611: UPF sends fifth information to the time-sensitive network TSN device.

Specifically, the fifth information includes the fifth time delay, where the TSN device may be the TSN device 2 in FIG. 4-a. The fifth information may be carried in a Talker Advertise Declaration message of the streaming service provider.

For example, after UPF determines the fifth delay, it can modify the first delay in the streaming service provider broadcast announcement message received by UPF to the fifth delay, and then UPF sends the modified streaming service provider broadcast announcement to the TSN device information. In other words, the UPF network element may send the fifth information to the TSN device through the broadcast announcement message of the streaming service provider, and the fifth information includes the fifth time delay.

Step S612: The TSN device receives the fifth information from the UPF.

Specifically, the fifth information includes the fifth time delay.

In the above method, the first terminal device determines the first delay according to the eighth delay from the first information, and then sends the second information to the UPF. The second information includes the first delay. Accordingly, the UPF receives the first delay from the The second information of a terminal device, and the fifth delay is obtained according to the first delay in the second information and the fourth delay from the SMF, and then the UPF sends the fifth information to the TSN device, and the fifth information includes the fifth Delay, the delay is updated in such a simple way to ensure the transmission quality of the stream.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the UPF can request a fourth delay from the SMF. The fourth delay is the transmission delay between the UPF and the terminal equipment UE. Therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

Please refer to FIG. 7. FIG. 7 is a communication method provided by an embodiment of the present application. The method shown in FIG. 7 can be applied to the architecture of FIG. 4-b. The method includes but is not limited to the following steps:

Step S701: The time-sensitive network TSN device or the streaming service provider talker sends the sixth information to the user plane function UPF network element.

Step S702: The user plane function UPF network element receives the sixth information from the time-sensitive network TSN device or the streaming service provider talker.

Specifically, the sixth information is used to indicate the sixth delay, and the sixth delay includes the delay for the stream to be transmitted from the stream service provider talker to the UPF. For example, the sixth delay is the maximum transmission of the stream from the talker to the UPF. Time delay. Talker refers to the host or server that provides the stream, and is the source of the stream.

Specifically, the sixth information may be carried in a streaming service provider broadcast declaration (Talker Advertise Declaration) message. The stream service provider's broadcast announcement message can be used to broadcast the corresponding QoS requirements of the stream.

Specifically, in addition to the sixth information, the stream service provider broadcast declaration message may also carry a stream identity (Stream ID). In addition, the streaming service provider broadcast statement message can also carry one or more of the following information: destination_address, source address (source_address), maximum frame size (MaxFrameSize), maximum frame interval (MaxIntervalFrames), frame information Priority (PriorityAndRank), the maximum allowable delay for a single frame of the stream to be transmitted from the talker to the listener, the reliability requirements of the stream or the reason for the failure of resource reservation (FailureInformation).

For example, the UPF receives the sixth message, the sixth information is used to indicate the sixth delay, and the sixth delay is X.

Step S703: The UPF sends a request message to the session management function SMF network element for requesting the seventh time delay.

Step S704: The SMF receives the request message and sends the seventh time delay to the UPF.

Specifically, the seventh delay includes the PDB value corresponding to the downlink PDU session of the UPF, where the PDB value is the transmission delay of the flow between the UPF and the UE determined by the 5G QoS identifier (5G QoS identifier, 5QI). The PDB value corresponding to the PDU session may be the maximum transmission delay of the flow from the UPF to the UE. The PDB value may include the processing delay of the flow inside the UPF.

For example, the UPF sends a request message to the SMF, and the request message is used to request the seventh delay. Correspondingly, the SMF receives the request message from the UPF, sends the seventh delay c to the UPF, and the UPF receives the seventh delay c.

Step S705: UPF receives the seventh time delay from SMF.

Step S706: The UPF obtains the third time delay according to the sixth time delay and the seventh time delay.

Specifically, the third delay includes the delay of the stream being transmitted from the talker to the second terminal device. For example, the third delay is the maximum transmission delay of the stream being transmitted from the talker to the second terminal device.

Specifically, a possible implementation manner in which the UPF obtains the third delay according to the sixth delay and the seventh delay may include: the UPF determines the sum of the sixth delay and the seventh delay as the third delay , So as to obtain the third time delay. Of course, UPF can also obtain the third delay based on the sixth delay and the seventh delay in other ways. For example, after the UPF adds the sixth delay and the seventh delay, the sum obtained by the addition can be performed Correct (for example, add a specified or default value) to obtain the third delay. The embodiment of the present application does not limit the manner of obtaining the third delay based on the sixth delay and the seventh delay.

For example, if the sixth delay is X and the seventh delay is c, the UPF determines that the third delay is X+c according to the sixth delay X and the seventh delay c.

Step S707: UPF sends seventh information to the second terminal device.

Specifically, the seventh information is used to indicate the third time delay. Wherein, the second terminal device may be the UE in Figure 4-b.

Specifically, the seventh information may be carried in a streaming service provider broadcast declaration (Talker Advertise Declaration) message.

For example, after UPF determines the third delay, it can modify the sixth delay in the streaming service provider announcement message received by UPF to the third delay, and then UPF sends the modified streaming service provider to the second terminal device Broadcast announcement message. That is to say, the UPF network element may send the seventh information to the second terminal device through the broadcast announcement message of the streaming service provider, and the seventh information includes the third time delay.

Step S708: The second terminal device receives the seventh information from the UPF.

Specifically, the seventh information is used to indicate the third delay, and the third delay includes the delay of the stream being transmitted from the talker of the streaming service provider to the second terminal device. For example, the third delay is the transmission of the stream from the talker to the second terminal device. 2. Maximum transmission delay of terminal equipment.

For example, the second terminal device receives the seventh information from the UPF, and the seventh information is used to indicate the third delay X+c.

Step S709: The second terminal device determines a ninth time delay according to the third time delay.

Specifically, the ninth delay includes the delay of the stream being transmitted from the talker to the second terminal device, the resident delay in the second terminal device, and the transmission delay from the second terminal device to the time-sensitive network TSN device. The resident delay of the stream in the second terminal device may include the transmission and processing delay of the stream in the second terminal device, it can also be the maximum time consumption of the stream in the second terminal device, or it can be the stream on the device side. The total time-consuming transmission and processing between the delay-sensitive network converter DS-TT and the UE.

For example, if the third delay is X+c, the second terminal device adds d+txPropogationDelay to the third delay X+c to obtain the ninth delay X+c+d+txPropogationDelay, where, X+c represents the transmission delay of the stream from the talker to the second terminal device, d represents the residence delay of the stream in the second terminal device, and txPropogationDelay represents the transmission delay of the stream from the second terminal device to the TSN device.

Step S710: The second terminal device sends the eighth information to the time-sensitive network TSN device.

Specifically, the eighth information includes the ninth time delay, where the TSN device may be the TSN device 2 in FIG. 4-b.

Specifically, the eighth information may be carried in a streaming service provider broadcast declaration (Talker Advertise Declaration) message.

For example, after the second terminal device determines the ninth delay, the third delay in the streaming service provider broadcast announcement message received by the second terminal device may be modified to the ninth delay, and then the second terminal device sends to the TSN device The modified streaming service provider broadcasts an announcement message. That is, the second terminal device may send the eighth information to the TSN device through the streaming service provider broadcast announcement message, and the eighth information includes the ninth time delay.

Step S711: The TSN device receives the eighth information from the second terminal device.

Specifically, the eighth information includes the ninth time delay.

In the above method, the UPF receives the sixth delay in the sixth information from the TSN device or talker, sends a request message to the SMF to request the seventh delay, and determines the third delay based on the sixth delay and the seventh delay , And then send the seventh information to the second terminal device. The seventh information includes the third delay. Correspondingly, the second terminal device receives the third delay from the UPF and determines the ninth delay according to the third delay, Then the eighth information is sent to the TSN device, and the eighth information includes the ninth delay. The delay is updated in such a simple way to ensure the transmission quality of the stream.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the UPF can request the seventh delay by sending a request message to the SMF. The seventh delay flows between the UPF and the terminal equipment UE. Therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

Please refer to FIG. 8. FIG. 8 is a communication method provided by an embodiment of the present application. The method shown in FIG. 8 is applied to the architecture of FIG. 4-c or FIG. 4-d. The method includes but is not limited to the following steps:

For step S801-step 805, refer to step S501-step 505, which will not be repeated here.

Step S806: UPF sends request information to the session management function SMF network element.

Specifically, the request information is used to request the second delay.

Step S807: The SMF receives the request information from the UPF.

Step S808: SMF determines to perform local exchange.

Specifically, the SMF determining to perform the local exchange may mean that the SMF determines that the UPF receives the second information from the first terminal device, and the UPF sends the third information to the first terminal device, and the second information includes the streaming service provider talker. Transmitted to the inbound interface device in the 5GS system, that is, the delay of the first terminal device and the resident delay in the first terminal device. The third information includes the stream transmitted from the talker to the outbound interface device in the 5GS system, namely The delay of the first terminal device. Alternatively, the SMF determination to perform a local exchange may also mean that the SMF determines that the UPF receives the second information from the first terminal device, and the UPF sends the third information to the second terminal device, where the second information includes the stream transmitted from the talker to the first terminal device The delay of, and the delay of staying in the first terminal device, the third information includes the delay of the stream being transmitted from the talker to the second terminal device.

For example, as shown in Figure 4-c, suppose the UPF receives the second information from the terminal equipment UE and sends the third information to the terminal equipment UE, and the second information includes the delay of the stream from the talker to the terminal equipment UE. , And the staying delay in the terminal equipment UE, the third information includes the delay of the flow from the talker to the UE, and the UPF determines to perform the local exchange. Or, as shown in Figure 4-d, if the UPF receives the second information from the terminal device UE1 and sends the third information to the terminal device UE2, the second information includes the delay of the stream from the talker to the terminal device UE1, and For the dwell time delay in the terminal equipment UE1, the third information includes the time delay for the stream to be transmitted from the talker to the UE2, and the SMF determines to perform the local exchange.

Step S809: The SMF sends the second time delay to the UPF.

Specifically, the second delay includes the PDB value corresponding to the uplink PDU session and the downlink PDU session of the UPF, where the PDB value is the time when the flow is determined by the 5G QoS identifier (5G QoS identifier, 5QI) between the UPF and the UE. Extension. The PDB value corresponding to the uplink PDU session may be the maximum transmission delay of the flow from the UE to the UPF, and the PDB value corresponding to the downlink PDU session may be the maximum transmission delay of the flow from the UPF to the UE. The PDB value corresponding to the uplink PDU session or the PDB value corresponding to the downlink PDU session may include the processing delay of the flow within the UPF.

For example, if the second delay can be the sum of the PDB value b corresponding to the UPF uplink PDU session and the PDB value c corresponding to the UPF downlink PDU session, namely (b+c), the SMF sends the second Delay b+c, or the second delay may be the PDB value b corresponding to the UPF uplink PDU session and the PDB value c corresponding to the UPF downlink PDU session, namely (b, c), then the SMF sends the second Time delay (b, c).

For step S810-step S816, reference may be made to step S509-step S515, which will not be repeated here.

In addition, in the prior art, if the calculation flow is transmitted from the UPF to the terminal equipment UE, it is necessary to synchronize the clocks between the two adjacent nodes between the UPF and the terminal equipment UE, and finally realize the UPF to the terminal equipment UE. The clock synchronization between all nodes is complicated and difficult to implement. In this solution, the SMF directly sends the second delay to the UPF. The second delay is the transmission delay between the UPF and the terminal equipment UE. Therefore, compared with the prior art, the solution of the embodiment of the present application is simpler and easier to implement.

Please refer to FIG. 9. FIG. 9 is a communication method provided by an embodiment of the present application. The method shown in FIG. 9 is applied to the architecture of FIG. 4-c or FIG. 4-d. The method includes but is not limited to the following steps:

For steps S901-905, refer to steps S501-505, which will not be repeated here.

Step S906: UPF sends the request information to the session management function SMF network element.

Specifically, the request information is used to request the fourth time delay.

Step S907: The SMF receives the request information from the UPF.

Step S908: The SMF determines that no local exchange is required.

Specifically, determining the local exchange may mean that the SMF determines that the UPF receives the second information from the first terminal device, and the UPF sends the third information to the first terminal device. The second information includes the stream transmitted from the stream service provider talker to the The inbound interface device in the 5GS system, that is, the delay of the first terminal device and the resident delay in the first terminal device. The third information includes the stream transmitted from the talker to the outbound interface device in the 5GS system, that is, the first The delay of the terminal equipment. Alternatively, determining the local exchange may also mean that the SMF determines that the UPF receives the second information from the first terminal device and sends the third information to the second terminal device, where the second information includes the delay of the stream transmitting from the talker to the first terminal device , And the resident delay in the first terminal device, the third information includes the delay of the stream being transmitted from the talker to the second terminal device.

For example, as shown in Figure 4-a, the UPF receives the first information from the first terminal device, where the first information includes the inbound interface device of the stream transmitted from the talker to the 5GS, that is, the delay of the first terminal device and the The resident delay in the first terminal device, but the second information is not sent to a terminal device, or the second information is not sent to the second terminal device. The second information includes the stream transmitted from the talker to the outbound interface device of the 5GS, That is, the delay of the first terminal device or the delay of the stream being transmitted from the talker to the second terminal device, the SMF determines that no local exchange is required.

Step S909: The SMF sends the fourth time delay to the UPF.

Specifically, the fourth delay includes the PDB value corresponding to the uplink PDU session of the UPF, where the PDB value is the transmission delay of the flow between the UPF and the UE determined by the 5G QoS identifier (5G QoS identifier, 5QI), where The PDB value corresponding to the uplink PDU session may be the maximum transmission delay of the flow from the UE to the UPF, and the PDB value corresponding to the uplink PDU session may include the processing delay of the flow inside the UPF.

For example, if the fourth delay is b, the SMF sends the fourth delay b to the UPF.

For step S910-step S913, reference may be made to step S609-step S612, which will not be repeated here.

Please refer to FIG. 10, which is a communication method provided by an embodiment of the present application. The method shown in FIG. 10 is applied to the above-mentioned architectures of FIG. 4-a, FIG. The method includes but is not limited to the following steps:

Step S1001: The time-sensitive network TSN device or the streaming service provider talker sends the ninth information to the first device.

Step S1002: The first device receives the ninth information from the time-sensitive network TSN device or the streaming service provider talker.

Specifically, the ninth information is used to indicate the delay A, and the delay A includes the delay for the stream to be transmitted from the stream service provider talker to the first device. For example, the delay A is the maximum delay for the stream to be transmitted from the talker to the first device. Transmission delay, talker refers to the host or server that provides the stream, and is the source of the stream. The first device is the inbound interface device of the stream in the 5GS system, and the first device can be a UE or a UPF. For example, the first device may be the UE in FIG. 4-a, the first device may be the UPF in FIG. 4-b, the first device may be the UE in FIG. 4-c, and the first device may be the UE in FIG. 4-d UE1 in.

Specifically, the ninth information may be carried in a streaming service provider broadcast declaration (Talker Advertise Declaration) message. The stream service provider's broadcast announcement message can be used to broadcast the corresponding QoS requirements of the stream.

Specifically, in addition to the ninth information, the stream service provider broadcast declaration message can also carry a stream identity (Stream ID). In addition, the streaming service provider broadcast statement message can also carry one or more of the following information: destination_address, source address (source_address), maximum frame size (MaxFrameSize), maximum frame interval (MaxIntervalFrames), frame information Priority (PriorityAndRank), the maximum allowable delay for a single frame of the stream to be transmitted from the talker to the listener, the reliability requirements of the stream or the reason for the failure of resource reservation (FailureInformation).

For example, if the transmission delay of the stream from the talker to the first device is X, the first device receives the ninth information from the TSN device or the talker. The ninth information is used to indicate the delay A, and the value of the delay A is X.

Step S1003: The first device sends a request message to the session management function SMF network element.

Specifically, the request message is used to request time delay B, and time delay B includes the bridge delay and the transmission delay of the flow from the second device to the second TSN device. Among them, the second device is an outgoing interface device streaming in the 5GS system, and the second device may be a UE or a UPF. For example, the second device can be the UPF in Figure 4-a, the second device can be the UE in Figure 4-b, the second device can be the UE in Figure 4-c, and the second device can be the UE in Figure 4-d. UE2 in.

In an example, the first device sending the request message to the session management function SMF network element includes: the request message sent by the first device to the SMF carries the delay A.

For example, the first device sends a request message to the SMF, and the request message carries a delay A. If the delay A is X, the request message carries a delay of X when the stream is transmitted from the talker to the first device.

Step S1004: The SMF receives the request message from the first device.

For example, if the first device sends a request message to the SMF, the request message carries the delay A. If the delay A is X, the SMF receives the request message from the first device, and the request message carries the stream transmitted from the talker to the first The delay of the device is X.

Step S1005: SMF sends time delay B to the first device.

Specifically, the delay B includes the bridge delay and the transmission delay of the stream from the second device to the second TSN device. In different architectures, the value of bridge delay (5GS bridge delay) is different. For example, in the architectures of Figure 4-c and Figure 4-d, 5GS bridge delay corresponds to UPF's uplink PDU session and downlink PDU session. The PDB value and the sum of the two UE-DS-TT Residence Time of the inbound and outbound interfaces. In the architecture of Figure 4-a and Figure 4-b, 5GS bridge delay is the PDB corresponding to the UPF uplink PDU session or downlink PDU session The sum of the value and the UE-DS-TT Residence Time of the incoming or outgoing interface, where the UE-DS-TT residence time is the total time consumed for transmission and processing between the DS-TT and the UE.

For example, if the delay B is 5GS bridge delay+txPropogationDelay, where txPropogationDelay represents the transmission delay of the stream from the second device to the second TSN device, then the SMF sending delay B to the first device is 5GS bridge delay+txPropogationDelay.

In an example, when the request message of the first device carries the delay A, the SMF sends the delay B to the first device, including: the SMF sends the delay B and the delay A to the first device.

Specifically, when the SMF receives the request message from the first device and carries the delay A, the SMF can send the sum of the delay B and the delay A to the first device, or it can send the delay B and the delay A to the first device. Correspondingly, the first device receives the sum of the delay B and the delay A from the SMF, and may also receive the delay B and the delay A from the SMF.

For example, if the delay B is 5GS bridge delay+txPropogationDelay and the delay A is X, the SMF sending delay B to the first device is 5GS bridge delay+txPropogationDelay, and the delay A is X. Or, the sum of the delay B and the delay A may be sent to the first device as 5GS bridge delay+txPropogationDelay+X.

Step S1006: The first device receives the time delay B from the SMF.

For example, if the delay B sent by the SMF to the first device is 5GS bridge delay+txPropogationDelay, the delay B received by the first device from the SMF is 5GS bridge delay+txPropogationDelay.

In an example, the first device receiving the delay B from the SMF includes: the first device receives the delay B and the delay A from the SMF.

For example, if the SMF sending delay B to the first device is 5GS bridge delay+txPropogationDelay, and the delay A is X, then the first device receiving SMF sending delay B is 5GS bridge delay+txPropogationDelay, and the delay A is X. Or if the sum of the delay B and the delay A sent by the SMF to the first device is 5GS bridge delay+txPropogationDelay+X, the sum of the delay B and the delay A received from the SMF by the first device is 5GS bridge delay+txPropogationDelay+ X.

Step S1007: The first device obtains the time delay C according to the time delay A and the time delay B.

Specifically, the delay C includes the delay of the stream being transmitted from the talker to the second time-sensitive network TSN device. For example, the delay C is the maximum transmission delay of the stream being transmitted from the talker to the second TSN device.

Specifically, a possible implementation manner in which the first device obtains the delay C according to the delay A and the delay B may include: the first device determines the sum of the delay A and the delay B as the delay C, thereby Obtain the delay C. Of course, the first device can also obtain delay C based on delay A and delay B in other ways. For example, after adding delay A and delay B, the first device can modify the sum obtained by adding (for example, , Plus a designated or default value) to obtain the time delay C. The embodiment of the present application does not limit the manner of obtaining the time delay C according to the time delay A and the time delay B.

For example, if the value of delay A is X and the value of delay B is 5GS bridge delay+txPropogationDelay, the first device determines the value of delay C according to delay A and delay B as X+5GS bridge delay+txPropogationDelay.

Step S1008: The first device determines the tenth information.

Specifically, the tenth information includes time delay C.

Step S1009: The first device sends the tenth information to the second device.

Specifically, the tenth information may be carried in a streaming service provider broadcast declaration (Talker Advertise Declaration) message. Among them, the second device is an outgoing interface device streaming in the 5GS system, and the second device may be a UE or a UPF. For example, the second device can be the UPF in Figure 4-a, the second device can be the UE in Figure 4-b, the second device can be the UE in Figure 4-c, and the second device can be the UE in Figure 4-d. UE2 in.

For example, after the first device determines the delay C, it can modify the delay A in the streaming service provider announcement message received by the first device to the delay C, and then the first device sends the modified streaming service to the second device The provider broadcasts the announcement message. In other words, the first device may send the tenth information to the second device through the broadcast announcement message of the streaming service provider, and the tenth information includes the delay C.

Step S1010: The second device receives the tenth information from the first device.

Step S1011: The second device sends the tenth information to the TSN device.

Specifically, the tenth information includes time delay C. Among them, the TSN device can be the TSN device 2 in Figure 4-a, the TSN device 2 in Figure 4-b, or the TSN device 2 in Figure 4-c, or it can also be the TSN device 2 in Figure 4-d. TSN equipment in 2.

Step S1012: The TSN device receives the tenth information of the second device.

Specifically, the tenth information includes time delay C.

In the above method, the first device receives the ninth information from the TSN device or Talker. The ninth information includes the delay A, requests the delay B from the SMF, determines the delay C according to the delay A and the delay B, and then sends it to the first The second device sends tenth information, and the tenth information includes time delay C. In this simple way, the first device determines the delay of the flow from the inbound interface of the 5GS system to the second TSN device, that is to say, only the first device, that is, the inbound interface device in the 5GS system is required to update the delay. No other network elements or equipment in the 5GS system are required for operation, which is simple and convenient.

Please refer to FIG. 11. FIG. 11 is a communication method provided by an embodiment of the present application. The method shown in FIG. 11 is applied to the architecture of FIG. 4-a, FIG. 4-b, FIG. 4-c, or FIG. 4-d. The method includes but is not limited to the following steps:

Step S1101: The time-sensitive network TSN device or the streaming service provider talker sends the ninth information to the first device.

Step S1003: The first device sends the ninth information to the second device.

Step S1104: The second device receives the ninth information from the first device.

Specifically, the ninth information is used to indicate the delay A, and the delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device, where the delay A can be the stream being transmitted from the stream service provider talker to the first device. The maximum transmission delay of the first device. The talker refers to the host or server that provides the stream, and is the source of the stream. The second device is the outgoing interface device of the stream in the 5GS system. The second device can be a UE or a UPF. For example, the second device can be the UPF in Figure 4-a, the second device can be the UE in Figure 4-b, the second device can be the UE in Figure 4-c, and the second device can be the UE in Figure 4-d. UE2 in. The first device is an inbound interface device streaming in the 5GS system, and the first device may be a UE or a UPF. For example, the first device may be the UE in FIG. 4-a, the first device may be the UPF in FIG. 4-b, the first device may be the UE in FIG. 4-c, and the first device may be the UE in FIG. 4-d UE1 in.

Specifically, in addition to the ninth information, the stream service provider broadcast declaration message can also carry a stream identity (Stream ID). In addition, the streaming service provider broadcast statement message can also carry one or more of the following information: destination_address, source_address, maximum frame size (MaxFrameSize), maximum frame interval (MaxIntervalFrames), frame information Priority (PriorityAndRank), the maximum allowable delay for a single frame of the stream to be transmitted from the talker to the listener, the reliability requirements of the stream or the reason for the failure of resource reservation (FailureInformation).

For example, if the time delay for the stream to be transmitted from the talker to the first device is X, the second device receives the ninth information, and the ninth information is used to indicate the time delay A, and the time delay A is X.

Step S1105: The second device sends a request message to the session management function SMF network element.

Specifically, the request message is used to request time delay B, which includes the bridge delay and the transmission delay of the flow from the second device to the second time-sensitive network TSN device.

In an example, the second device sending the request message to the session management function SMF network element includes: the request message sent by the second device to the SMF carries the delay A.

For example, the second device sends a request message to the SMF, and the request message carries the delay A. If the delay A is X, the request message carries the delay X of the flow from the talker to the first device.

Step S1106: The SMF receives the request message from the second device.

For example, if the second device sends a request message to the SMF, the request message carries a delay A, if the delay A is X, the SMF receives a request message from the second device, and the request message carries a stream transmitted from the talker to the first The delay of the device is X.

Step S1107: SMF sends time delay B to the second device.

For example, if the delay B is 5GS bridge delay+txPropogationDelay, the SMF sending delay B to the second device is 5GS bridge delay+txPropogationDelay.

In an example, when the request message of the second device carries the delay A, the SMF sends the delay B to the second device, including: the SMF sends the delay B and the delay A to the second device.

Specifically, when the SMF receives the request message from the second device and carries the delay A, the SMF can send the sum of the delay B and the delay A to the second device, or it can send the delay B and the delay A to the second device. Correspondingly, the second device receives the sum of the delay B and the delay A from the SMF, and may also receive the delay B and the delay A from the SMF. For example, if the delay B is 5GS bridge delay+txPropogationDelay and the delay A is X, the SMF sending delay B to the second device is 5GS bridge delay+txPropogationDelay, and the delay A is X. Or, the sum of the delay B and the delay A may be sent to the second device as 5GS bridge delay+txPropogationDelay+X.

Step S1108: The second device receives the time delay B sent by the SMF.

For example, if the delay B sent by the SMF to the second device is 5GS bridge delay+txPropogationDelay, the delay B received by the second device from the SMF is 5GS bridge delay+txPropogationDelay.

In an example, the time delay B for receiving the SMF transmission by the second device includes: the time delay B and the time delay A for receiving the SMF transmission by the second device.

Specifically, SMF can send the sum of delay B and delay A to the second device, or send delay B and delay A to the second device. Correspondingly, the second device receives delay B and time delay from SMF. The sum of delay A can also receive delay B and delay A from SMF.

For example, if the SMF sending delay B to the second device is 5GS bridge delay+txPropogationDelay, and the delay A is X, then the second device receiving SMF sending delay B is 5GS bridge delay+txPropogationDelay, and the delay A is X. Or if the sum of the delay B and the delay A sent by the SMF to the second device is 5GS bridge delay+txPropogationDelay+X, the sum of the delay B and the delay A received from the SMF by the second device is 5GS bridge delay+txPropogationDelay+ X.

Step S1109: The second device obtains the time delay C according to the time delay A and the time delay B.

Specifically, the delay C includes the delay of the stream being transmitted from the talker to the second TSN device.

Specifically, a possible implementation manner in which the second device obtains the delay C according to the delay A and the delay B may include: the second device determines the sum of the delay A and the delay B as the delay C, and thus Obtain the delay C. Of course, the second device can also obtain delay C based on delay A and delay B in other ways. For example, after adding delay A and delay B, the second device can modify the sum obtained by adding (for example, , Plus a designated or default value) to obtain the time delay C. The embodiment of the present application does not limit the manner of obtaining the time delay C according to the time delay A and the time delay B.

For example, if the value of delay A is X and the value of delay B is 5GS bridge delay+txPropogationDelay, the second device determines that delay C is X+5GS bridge delay+txPropogationDelay according to delay A and delay B.

Step S1110: The second device determines the tenth information.

Specifically, the tenth information includes time delay C.

Step S1111: The second device sends the tenth information to the TSN device.

Specifically, the tenth information may be carried in a streaming service provider broadcast declaration (Talker Advertise Declaration) message.

For example, after the second device determines the delay C, it can modify the delay A in the streaming service provider announcement message received by the second device to the delay C, and then the second device sends the modified streaming service to the TSN device. The person broadcasts the announcement message. That is, the second device may send the tenth information to the TSN device through the streaming service provider broadcast announcement message, and the tenth information includes the delay C.

Step S1112: The second TSN device receives the tenth information from the second device.

Specifically, the tenth information includes time delay C.

In the above method, the second device receives the ninth information from the first device. The ninth information includes delay A, requests delay B from SMF, determines delay C according to delay A and delay B, and then sends it to the TSN device Send the tenth message, the tenth message includes the time delay C. In such a simple way, the second device determines the delay of the flow from the inbound interface of the 5GS system to the second TSN device, that is to say, only the second device, that is, the outbound interface device in the 5GS system, is required to update the delay. No other network elements or equipment in the 5GS system are required for operation, which is simple and convenient.

The foregoing describes the method of the embodiment of the present application in detail, and the device of the embodiment of the present application is provided below.

Please refer to FIG. 12, which is a schematic structural diagram of a communication device 1200 provided by an embodiment of the present application. The communication device may include a transceiver module 1201 and a processing module 1202. The detailed description of each module is as follows.

In a possible design, the communication device 1200 can be used to implement the user plane function UPF network element and the network device of the UPF network element in the method described in any one of FIG. 5 to FIG. 11.

For example, the transceiver module 1201 is configured to receive first information, where the first information is used to indicate a first delay, and the first delay includes the delay of the stream being transmitted from the stream service provider talker to the first terminal device, And the resident delay in the first terminal device; a processing module 1202, configured to determine to perform a local exchange, request a second delay from the session management function SMF network element, and according to the first delay and the first delay The second delay obtains the third delay, and the second delay includes the packet delay budget PDB value corresponding to the UPF uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session, and the third time delay The delay includes the delay of the stream being transmitted from the talker to the second terminal device; and/or the processing module 1202 is further configured to determine that no local exchange is required, request the SMF for a fourth delay, and according to the first The fifth delay is obtained by the delay and the fourth delay, the fourth delay includes the PDB value corresponding to the UPF uplink PDU session, and the fifth delay includes the flow transmitted from the talker to the The time delay of the UPF, the residence time delay in the UPF, and the transmission time delay from the UPF to the time-sensitive network TSN device.

In another possible design, the communication device 1200 can be used to implement the user plane function UPF network element, the network device of the UPF network element in the method described in any one of FIG. 5 to FIG. 11.

For example, the transceiver module 1201 is configured to receive first information, where the first information is used to indicate a sixth delay, and the sixth delay includes the delay of stream transmission from the stream service provider talker to the UPF; processing The module 1202 is configured to request a seventh delay from the session management function SMF network element, and obtain a third delay according to the sixth delay and the seventh delay, where the seventh delay includes the downlink of the UPF The packet delay budget PDB value corresponding to the session of the protocol data unit PDU session, the third delay includes the delay of the stream being transmitted from the talker to the second terminal device.

In another possible design, the communication device 1200 can be used to execute the first device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the first device may be a terminal device or an application. A chip in a terminal device; if it is downlink, the first device can be a UPF, or a network device that includes UPF, or a chip applied to a network device, or both the first device and the second device can be terminals A device or a chip used in a terminal device.

For example, the transceiver module 1201 is configured to receive first information, where the first information is used to indicate a time delay A, and the time delay A includes the time delay for the stream to be transmitted from the stream service provider talker to the device; The module 1201 is used to send a request message to the session management function SMF network element for requesting delay B. The delay B includes the bridge delay and the transmission of the flow from the second device to the second time-sensitive network TSN device Time delay, and receiving the time delay B from the SMF; the processing module 1202 is configured to obtain the time delay C according to the time delay A and the time delay B, and the time delay C includes the flow from the The delay of the talker transmission to the second TSN device; the processing module 1202 is configured to determine second information, and the second information includes the delay C; the transceiver module 1201 is also configured to communicate to the The second device sends the second information. In an example, the transceiver module 1201 is further configured to carry the time delay A in a request message sent to the SMF. In another example, the transceiver module 1201 is further configured to receive the delay B and the delay A from the SMF.

In another possible design, the communication device 1200 may be used to execute the second device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the second device may be UPF or include UPF network equipment, or a chip applied to a network device; if it is downlink, the second device may be a terminal device or a chip applied to a terminal device, or both the first device and the second device may be terminals A device or a chip used in a terminal device.

The transceiver module 1201 is configured to receive first information, the first information is used to indicate the delay A, and the delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device; the transceiver module 1201 uses In sending a request message to the session management function SMF network element for requesting delay B, the delay B includes the bridge delay and the transmission delay of the flow from the second device to the second time-sensitive network TSN device The transceiver module 1201 is also used to receive the time delay B sent by the SMF; the processing module 1202 is used to obtain the time delay C according to the time delay A and the time delay B, and the time delay C It includes the delay of the stream being transmitted from the talker to the second TSN device; the processing module 1202 is also used to determine second information, the second information includes the delay C; the transceiver module 1201, It is also used to send the second information to the second TSN device. In an example, the transceiver module 1201 is further configured to carry the time delay A in a request message sent to the SMF. In another example, the transceiver module 1201 is further configured to receive the delay B and the delay A sent by the SMF.

In a possible design, the communication device 1200 may be used to execute the SMF network element in the method described in any one of FIG. 5 to FIG. 11, or the network device of the SMF network element.

The transceiver module 1201 is configured to receive request information from the user plane function UPF network element, and is used to request the second delay and/or the fourth delay; The UPF sends the second delay, and the second delay includes the packet delay budget PDB value corresponding to the uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session of the UPF, and the second The delay is used by the UPF to obtain the third delay according to the first delay and the second delay, and the first delay includes the delay of the stream being transmitted from the streaming service provider talker to the first terminal device, and The resident delay in the first terminal device, the third delay includes the delay of the stream being transmitted from the talker to the second terminal device; and/or the processing module 1202 is configured to determine that it is not required For local exchange, the fourth delay is sent to the UPF through the transceiver module 1201, and the fourth delay includes the PDB value corresponding to the uplink PDU session of the UPF.

In a possible design, the communication device 1200 can be used to implement the user plane function SMF network element, the network device of the SMF network element in the method described in any one of FIG. 5 to FIG. 11.

The processing module 1202 is configured to receive request information from the user plane function UPF through the transceiver module 1201 for requesting the seventh delay; the processing module 1202 is configured to transmit the seventh delay to the UPF through the transceiver module 1201, the The seventh delay includes the packet delay budget PDB value corresponding to the session PDU session of the UPF downlink protocol data unit, and the seventh delay is used by the UPF to obtain according to the sixth delay and the seventh delay The third delay, the sixth delay includes the delay of the stream being transmitted from the stream service provider talker to the UPF, and the third delay includes the delay of the stream being transmitted from the talker to the second terminal device.

In a possible design, the communication device 1200 can be used to execute the SMF network element and the network equipment of the SMF network element in the method described in any one of FIG. 5 to FIG. 11.

The processing module 1202 is configured to receive a request message from the first device through the transceiver module 1201. The request message is used to request delay B. The delay B includes the bridge delay and the flow from the second device to the second device. The transmission delay of the time-sensitive network TSN device; the processing module 1202 is configured to send the delay B to the first device through the transceiver module 1201, and the delay B is used by the first device according to the delay A and the delay B obtain the delay C. The delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device, and the delay C includes the stream being transmitted from the talker to the first device. Describe the time delay of the second TSN device. In an example, the request message of the first device carries the time delay A. In another example, the processing module 1202 is further configured to send the delay B and the delay A to the first device through the transceiver module 1201 when the request message of the first device carries the delay A. The time delay A.

The processing module 1202 is configured to receive a request message from the second device through the transceiver module 1201, the request message is used to request a delay B, and the delay B includes the bridge delay and the flow from the second device to the The transmission delay of the second time-sensitive network TSN device; the processing module 1202 is configured to send the delay B to the second device through the transceiver module 1201; the delay B is used by the second device according to the The delay A and the delay B obtain the delay C. The delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device, and the delay C includes the stream being transmitted from the talker to the first device. Describe the time delay of the second TSN device. In an example, the request message of the second device carries the time delay A. In another example, the processing module 1202 is further configured to send the delay B and the delay A to the second device through the transceiver module 1201 when the request message of the second device carries the delay A. The time delay A.

Please refer to FIG. 13, which is a schematic structural diagram of a communication device 1300 according to an embodiment of the present application. The communication device may include a transceiver module 1301 and a processing module 1302. The detailed description of each module is as follows.

In a possible design, the communication device 1300 may be used to execute the first terminal device in the method described in any one of FIG. 5 to FIG. 11.

The transceiver module 1301 is configured to receive first information, where the first information is used to indicate an eighth delay, and the eighth delay includes the delay of stream transmission from the streaming service provider talker to the first terminal device; The processing module 1302 is configured to determine a first delay according to the eighth delay, where the first delay includes the delay of the stream being transmitted from the talker to the first terminal device, and the delay at the first terminal Resident delay in the device; the transceiver module 1301 is configured to send second information to a user plane function UPF network element, where the second information includes the first delay.

In another possible design, the communication device 1300 may be used to execute the second terminal device in the method described in any one of FIG. 5 to FIG. 11.

The transceiver module 1301 is configured to receive first information, where the first information is used to indicate a third delay, and the third delay includes the delay of the stream being transmitted from the streaming service provider talker to the second terminal device; The processing module 1302 is configured to determine a ninth delay according to the third delay, where the ninth delay includes the delay of the stream being transmitted from the talker to the second terminal device, The resident delay and the transmission delay from the second terminal device to the time-sensitive network TSN device; the transceiver module 1301 is configured to send second information to the TSN device, and the second information includes the first Nine time delay.

In another possible design, the communication device 1300 may be used to execute the first device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the first device may be a terminal device or an application. A chip in a terminal device; if it is downlink, the first device can be a UPF, or a network device that includes UPF, or a chip applied to a network device, or both the first device and the second device can be terminals A device or a chip used in a terminal device.

For example, the transceiver module 1301 is configured to receive first information, where the first information is used to indicate time delay A, and the time delay A includes the time delay for the stream to be transmitted from the stream service provider talker to the device; The module 1301 is used to send a request message to the session management function SMF network element for requesting delay B. The delay B includes the bridge delay and the transmission of the flow from the second device to the second time-sensitive network TSN device Time delay, and receiving the time delay B from the SMF; the processing module 1302 is configured to obtain the time delay C according to the time delay A and the time delay B, and the time delay C includes the flow from the The delay of the talker transmission to the second TSN device; the processing module 1302 is configured to determine second information, and the second information includes the delay C; the transceiver module 1301 is also configured to The second device sends the second information. In an example, the transceiver module 1301 is further configured to send the request message to the SMF to carry the delay A. In another example, the transceiver module 1301 is further configured to receive the delay B and the delay A from the SMF.

In another possible design, the communication device 1300 may be used to execute the second device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the second device may be a UPF or include UPF network equipment, or a chip applied to a network device; if it is downlink, the second device may be a terminal device or a chip applied to a terminal device, or both the first device and the second device may be terminals A device or a chip used in a terminal device.

The transceiver module 1301 is configured to receive first information, the first information is used to indicate the delay A, and the delay A includes the delay of the stream being transmitted from the stream service provider talker to the first device; the transceiver module 1301 uses In sending a request message to the session management function SMF network element for requesting delay B, the delay B includes the bridge delay and the transmission delay of the flow from the second device to the second time-sensitive network TSN device The transceiver module 1301 is also used to receive the time delay B sent by the SMF; the processing module 1302 is used to obtain the time delay C according to the time delay A and the time delay B, and the time delay C It includes the delay of the stream being transmitted from the talker to the second TSN device; the processing module 1302 is further configured to determine second information, the second information includes the delay C; the transceiver module 1301, It is also used to send the second information to the second TSN device. In an example, the transceiver module 1301 is further configured to send the request message to the SMF to carry the delay A. In another example, the transceiver module 1301 is further configured to receive the delay B and the delay A sent by the SMF.

Please refer to FIG. 14, which is a schematic structural diagram of a communication device 1400 according to an embodiment of the present application. The communication device 1400 includes an interface circuit 1401 and a processor 1402, and optionally, a memory 1403. Wherein, the interface circuit 1401 may be a transceiver or an input/output interface, the memory 1403 is used to store a computer program, and the processor 1402 is coupled with the memory 1403 and the interface circuit 1401.

In a possible design, the communication device 1400 can be used to perform the user plane function UPF network element, the network device of the UPF network element, or the network device applied to the network device in the method described in any one of FIGS. 5 to 11 chip.

When the processor 1402 executes the computer program, it performs the following operations: receiving first information, where the first information is used to indicate a first delay, and the first delay includes stream transmission from the streaming service provider talker to the first delay. The delay of a terminal device and the staying delay in the first terminal device; determine to perform a local exchange, request a second delay from the session management function SMF network element, and according to the first delay and the The second delay obtains the third delay, and the second delay includes the packet delay budget PDB value corresponding to the uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session of the UPF, and the third The time delay includes the time delay for the stream to be transmitted from the talker to the second terminal device; and/or it is determined that no local exchange is required, and the SMF is requested for a fourth time delay, according to the first time delay and the fourth time delay. Obtain the fifth delay, the fourth delay includes the PDB value corresponding to the uplink PDU session of the UPF, and the fifth delay includes the delay of the flow from the talker to the UPF, and the The residence delay in the UPF and the transmission delay from the UPF to the time-sensitive network TSN device.

In another possible design, the communication device 1400 can be used to perform the user plane function UPF network element, the network device of the UPF network element, or the network device in the method described in any one of FIGS. 5 to 11 Chip.

When the processor 1402 executes the computer program, it performs the following operations: receiving first information, where the first information is used to indicate a sixth time delay, and the sixth time delay includes stream transmission from the streaming service provider talker to all The delay of the UPF; a seventh delay is requested from the session management function SMF network element, and the third delay is obtained according to the sixth delay and the seventh delay, and the seventh delay includes the UPF The packet delay budget PDB value corresponding to the session PDU session of the downlink protocol data unit, where the third delay includes the delay of the stream being transmitted from the talker to the second terminal device.

In another possible design, the communication device 1400 may be used to execute the first device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the first device may be a terminal device or an application. A chip in a terminal device; if it is downlink, the first device can be a UPF, or a network device that includes UPF, or a chip applied to a network device, or both the first device and the second device can be terminals A device or a chip used in a terminal device.

When the processor 1402 executes the computer program, it performs the following operations: receives first information through the interface circuit 1401, the first information is used to indicate the delay A, and the delay A includes stream transmission from the streaming service provider talker The delay to the first device; a request message is sent to the session management function SMF network element through the interface circuit 1401 to request the delay B. The delay B includes the bridge delay and the flow from the second device to the The transmission delay of the second time-sensitive network TSN device; receiving the delay B from the SMF through the interface circuit 1401; obtaining the delay C according to the delay A and the delay B, the delay C Including the delay of stream transmission from the talker to the second TSN device; determining second information, where the second information includes the delay C; sending the second device to the second device through the interface circuit 1401 information. In an example, the processor 1402 is further configured to send the request message to the SMF through the interface circuit 1401 to carry the time delay A. In another example, the processor 1402 is further configured to receive the delay B and the delay A from the SMF through the interface circuit 1401.

In another possible design, the communication device 1400 may be used to execute the second device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the second device may be UPF, or include UPF network equipment, or a chip applied to a network device; if it is downlink, the second device may be a terminal device or a chip applied to a terminal device, or both the first device and the second device may be terminals A device or a chip used in a terminal device.

When the processor 1402 executes the computer program, it performs the following operations: receives first information through the interface circuit 1401, the first information is used to indicate the delay A, and the delay A includes stream transmission from the streaming service provider talker The delay to the first device; a request message is sent to the session management function SMF network element through the interface circuit 1401 to request the delay B. The delay B includes the bridge delay and the flow from the second device to the The transmission delay of the second time-sensitive network TSN device; the delay B sent by the SMF is received through the interface circuit 1401; the delay C is obtained according to the delay A and the delay B, and the delay C Including the delay of stream transmission from the talker to the second TSN device; determining second information, where the second information includes the delay C; sending the first TSN device to the second TSN device through the interface circuit 1401 Two information. In an example, the processor 1402 is further configured to send the request message to the SMF through the interface circuit 1401 to carry the time delay A. In another example, the processor 1402 is further configured to receive the delay B and the delay A sent by the SMF through the interface circuit 1401.

In another possible design, the communication device 1400 can be used to perform the user plane function SMF network element, the network device of the SMF network element, or the network device in the method described in any one of FIGS. 5 to 11 Chip.

When the processor 1402 executes the computer program, it performs the following operations: receiving request information from a user plane function UPF network element through the interface circuit 1401 for requesting the second delay and/or the fourth delay; determining to perform a local exchange , Sending the second delay to the UPF through the interface circuit 1401, the second delay including the UPF uplink protocol data unit session PDU session and the packet delay budget corresponding to the downlink protocol data unit session PDU session PDB value, the second delay is used by the UPF to obtain the third delay according to the first delay and the second delay, and the first delay includes stream transmission from the streaming service provider talker to the first The delay of the terminal device and the delay of staying in the first terminal device, the third delay includes the delay of the stream being transmitted from the talker to the second terminal device; and/or the determination does not need to be performed For local switching, the fourth delay is sent to the UPF through the interface circuit 1401, where the fourth delay includes the PDB value corresponding to the uplink PDU session of the UPF.

When the processor 1402 executes the computer program, it performs the following operations: receiving request information from the user plane function UPF through the interface circuit 1401 for requesting the seventh time delay; and sending the seventh time delay to the UPF through the interface circuit 1401 The seventh delay includes the packet delay budget PDB value corresponding to the PDU session of the UPF downlink protocol data unit session, and the seventh delay is used by the UPF according to the sixth delay and the The seventh delay obtains the third delay, the sixth delay includes the delay of the stream being transmitted from the stream service provider talker to the UPF, and the third delay includes the stream being transmitted from the talker to the second terminal The delay of the device.

When the processor 1402 executes the computer program, it performs the following operations: receives a request message from the first device through the interface circuit 1401, the request message is used to request delay B, and the delay B includes bridge delay and The transmission delay of the stream from the second device to the second time-sensitive network TSN device;

The time delay B is sent to the first device through the interface circuit 1401, and the time delay B is used by the first device to obtain the time delay C according to the time delay A and the time delay B, and the time delay A includes the delay of stream transmission from the stream service provider talker to the first device, and the delay C includes the delay of stream transmission from the talker to the second TSN device. In an example, the request message of all the first device carries the time delay A. In another example, the processor 1402 is further configured to send the delay B and the delay A to the first device through the interface circuit 1401 when the request message of the first device carries the delay A. The time delay A.

When the processor 1402 executes the computer program, it performs the following operations: receives a request message from the second device through the interface circuit 1401, the request message is used to request delay B, and the delay B includes bridge delay and The transmission delay of the flow from the second device to the second time-sensitive network TSN device; the delay B is sent to the second device through the interface circuit 1401; the delay B is used for the second device Obtain the time delay C according to the time delay A and the time delay B. The time delay A includes the time delay of the flow from the streaming service provider talker to the first device, and the time delay C includes the flow from the talker. Transmission delay to the second TSN device. In an example, the request message of the second device carries the time delay A. In another example, the processor 1402 is further configured to send the delay B and the delay A to the second device through the interface circuit 1401 when the request message of the second device carries the delay A. The time delay A.

Please refer to FIG. 15, which is a schematic structural diagram of a communication device 1500 according to an embodiment of the present application. The communication device 1500 includes an interface circuit 1501 and a processor 1502, and optionally, a memory 1503. Wherein, the interface circuit 1501 may be a transceiver or an input/output interface, the memory 1503 is used to store a computer program, and the processor 1502 is coupled with the memory 1503 and the interface circuit 1501.

In a possible design, the communication device 1500 may be used to execute the first terminal device in the method described in any one of FIG. 5 to FIG. 11, or applied to a chip in the first terminal device.

When the processor 1502 executes the computer program, it performs the following operations: receives first information through the interface circuit 1501, the first information is used to indicate an eighth delay, and the eighth delay includes the streaming service provider The delay of talker transmission to the first terminal device; the first delay is determined according to the eighth delay, and the first delay includes the delay of stream transmission from the talker to the first terminal device, And the resident delay in the first terminal device; sending second information to the user plane function UPF network element through the interface circuit 1501, and the second information includes the first delay.

In another possible design, the communication device 1500 may be used to execute the second terminal device in the method described in any one of FIG. 5 to FIG. 11, or applied to a chip in the second terminal device.

When the processor 1502 executes the computer program, it performs the following operations: receives first information through the interface circuit 1501, the first information is used to indicate a third delay, and the third delay includes the streaming service provider The delay of the talker transmission to the second terminal device; the ninth delay is determined according to the third delay, and the ninth delay includes the delay of the stream being transmitted from the talker to the second terminal device, The residence delay in the second terminal device and the transmission delay from the second terminal device to the time-sensitive network TSN device; the second information is sent to the TSN device through the interface circuit 1501, and the second The information includes the ninth time delay.

In another possible design, the communication device 1500 may be used to execute the first device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the first device may be a terminal device or an application. A chip in a terminal device; if it is downlink, the first device can be a UPF, or a network device that includes UPF, or a chip applied to a network device, or both the first device and the second device can be terminals A device or a chip used in a terminal device.

When the processor 1502 executes the computer program, it performs the following operations: receives first information through the interface circuit 1501, the first information is used to indicate the delay A, and the delay A includes stream transmission from the streaming service provider talker The delay to the first device; a request message is sent to the session management function SMF network element through the interface circuit 1501 to request the delay B. The delay B includes the bridge delay and the flow from the second device to the The transmission delay of the second time-sensitive network TSN device; receiving the delay B from the SMF through the interface circuit 1501; obtaining the delay C according to the delay A and the delay B, the delay C Including the time delay for stream transmission from the talker to the second TSN device; determining second information, where the second information includes the time delay C; sending the second device to the second device through the interface circuit 1501 information. In an example, the processor 1502 is further configured to send the request message to the SMF through the interface circuit 1501 to carry the time delay A. In another example, the processor 1502 is further configured to receive the delay B and the delay A from the SMF through the interface circuit 1501.

In another possible design, the communication device 1500 may be used to execute the second device in the method described in any one of FIG. 5 to FIG. 11. If it is uplink, the second device may be UPF or include UPF network equipment, or a chip applied to a network device; if it is downlink, the second device may be a terminal device or a chip applied to a terminal device, or both the first device and the second device may be terminals A device or a chip used in a terminal device.

When the processor 1502 executes the computer program, it performs the following operations: receives first information through the interface circuit 1501, the first information is used to indicate the delay A, and the delay A includes stream transmission from the streaming service provider talker The delay to the first device; a request message is sent to the session management function SMF network element through the interface circuit 1501 to request the delay B, and the delay B includes the bridge delay and the flow from the second device to the The transmission delay of the second time-sensitive network TSN device; the delay B sent by the SMF is received through the interface circuit 1501; the delay C is obtained according to the delay A and the delay B, the delay C Including the delay of stream transmission from the talker to the second TSN device; determining second information, where the second information includes the delay C; sending the first TSN device to the second TSN device through the interface circuit 1501 Two information. In an example, the processor 1502 is further configured to send the request message to the SMF through the interface circuit 1501 to carry the time delay A. In another example, the processor 1502 is further configured to receive the delay B and the delay A sent by the SMF through the interface circuit 1501.

The embodiment of the present application also provides a computer product, and provides a computer program product. The computer program product includes: a computer program. When the computer program runs, the method executed by the terminal device in the above method embodiment is implement.

The embodiment of the application provides a computer program product, the computer program product includes: a computer program, when the computer program is executed, the above method embodiment is executed by a network device, a UPF network element, or an SMF network element The method is executed.

The embodiment of the present application provides a chip system, which includes a processor, and is configured to implement the functions of the terminal-side device in the foregoing method embodiment. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

The embodiment of the present application provides a chip system, which includes a processor, and is configured to implement the functions of the network side device in the foregoing method embodiment. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

The embodiment of the present application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the terminal-side device in the foregoing method embodiment is implemented.

The embodiment of the present application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the network-side device in the foregoing method embodiment is implemented.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

It should be understood that the processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), and application-specific integrated circuits. (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that it comprises:

The user plane function UPF network element receives first information, the first information is used to indicate a first delay, and the first delay includes the delay of the stream being transmitted from the stream service provider talker to the first terminal device, and the The residency delay in the first terminal device;

When the UPF determines to perform a local exchange, the UPF requests a second time delay from the session management function SMF network element, and obtains the third time delay according to the first time delay and the second time delay, and the second time delay The delay includes the packet delay budget PDB value corresponding to the UPF uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session, and the third delay includes stream transmission from the talker to the second terminal device. Time delay; and/or

When the UPF determines that no local exchange is required, the UPF requests a fourth delay from the SMF, and obtains a fifth delay according to the first delay and the fourth delay, and the fourth delay includes The PDB value corresponding to the uplink PDU session of the UPF, the fifth delay includes the delay of the flow from the talker to the UPF, the staying delay in the UPF, and the delay from the UPF to the UPF. Time-sensitive network TSN equipment transmission delay.
A communication method, characterized in that it comprises:

The user plane function UPF network element receives first information, where the first information is used to indicate a sixth delay, and the sixth delay includes the delay of stream transmission from the stream service provider talker to the UPF;

The UPF requests a seventh delay from the session management function SMF network element, and obtains a third delay according to the sixth delay and the seventh delay, and the seventh delay includes the UPF downlink protocol data The packet delay budget PDB value corresponding to the unit session PDU session, where the third delay includes the delay of the stream being transmitted from the talker to the second terminal device.
A communication method, characterized in that it comprises:

The first device receives first information, where the first information is used to indicate a time delay A, and the time delay A includes the time delay for the stream to be transmitted from the streaming service provider talker to the first device;

The first device sends a request message to the session management function SMF network element for requesting delay B. The delay B includes bridge delay and flow transmission from the second device to the second time-sensitive network TSN device Time delay

Receiving, by the first device, the delay B from the SMF;

The first device obtains the time delay C according to the time delay A and the time delay B, and the time delay C includes the time delay for the stream to be transmitted from the talker to the second TSN device;

The first device determines second information, where the second information includes the time delay C;

The first device sends the second information to the second device.
The method according to claim 3, wherein the sending of the request message by the first device to the session management function SMF network element comprises:

The request message sent by the first device to the SMF carries the delay A.
The method according to claim 4, wherein the first device receiving the delay B from the SMF comprises:

The first device receives the time delay B and the time delay A from the SMF.
A communication method, characterized in that it comprises:

The second device receives the first information, where the first information is used to indicate the delay A, and the delay A includes the delay of the stream being transmitted from the streaming service provider talker to the first device;

The second device sends a request message to the session management function SMF network element for requesting delay B, where the delay B includes bridge delay and flow from the second device to the second time-sensitive network TSN device The transmission delay;

Receiving, by the second device, the delay B sent by the SMF;

The second device obtains the time delay C according to the time delay A and the time delay B, and the time delay C includes the time delay for the stream to be transmitted from the talker to the second TSN device;

The second device determines second information, where the second information includes the time delay C;

The second device sends the second information to the second TSN device.
The method according to claim 6, wherein the sending of the request message by the second device to the session management function SMF network element comprises:

The request message sent by the second device to the SMF carries the delay A.
The method according to claim 7, wherein the second device receiving the delay B sent by the SMF comprises:

The second device receives the time delay B and the time delay A sent by the SMF.
A communication method, characterized in that it comprises:

The first terminal device receives first information, where the first information is used to indicate an eighth delay, where the eighth delay includes the delay for the stream to be transmitted from the streaming service provider talker to the first terminal device;

The first terminal device determines a first delay according to the eighth delay, and the first delay includes the delay of the stream being transmitted from the talker to the first terminal device, and the delay at the first terminal Resident delay in the equipment;

The first terminal device sends second information to a user plane function UPF network element, where the second information includes the first delay.
A communication method, characterized in that it comprises:

The second terminal device receives first information, where the first information is used to indicate a third delay, and the third delay includes the delay of the stream being transmitted from the streaming service provider talker to the second terminal device;

The second terminal device determines a ninth delay according to the third delay, and the ninth delay includes the delay of the stream being transmitted from the talker to the second terminal device. The residence time delay within and the transmission time delay from the second terminal device to the time-sensitive network TSN device;

The second terminal device sends second information to the TSN device, where the second information includes the ninth time delay.
A communication method, characterized in that it comprises:

The session management function SMF network element receives request information from the user plane function UPF network element for requesting the second delay and/or the fourth delay;

The SMF is determined to be exchanged locally, the SMF sends the second delay to the UPF, and the second delay includes the uplink protocol data unit session PDU session and the downlink protocol data unit session PDU session of the UPF. The corresponding packet delay budget PDB value, the second delay is used by the UPF to obtain the third delay according to the first delay and the second delay, and the first delay includes streaming service provision The delay of the talker transmission to the first terminal device and the residence delay in the first terminal device, the third delay including the delay of the stream being transmitted from the talker to the second terminal device; and /or

The SMF determines that no local exchange is required, the SMF sends the fourth delay to the UPF, and the fourth delay includes the PDB value corresponding to the uplink PDU session of the UPF.
A communication method, characterized in that it comprises:

The session management function SMF network element receives the request information from the user plane function UPF for requesting the seventh delay;

The SMF sends the seventh delay to the UPF, where the seventh delay includes the packet delay budget PDB value corresponding to the session PDU session of the UPF downlink protocol data unit, and the seventh delay is used When the UPF obtains the third delay according to the sixth delay and the seventh delay, the sixth delay includes the delay of stream transmission from the streaming service provider talker to the UPF, and the third delay The delay includes the delay of the stream being transmitted from the talker to the second terminal device.
A communication method, characterized in that it comprises:

The session management function SMF network element receives a request message from the first device. The request message is used to request delay B. The delay B includes bridge delay and flow from the second device to the second time-sensitive network TSN The transmission delay of the equipment;

The SMF sends the delay B to the first device, and the delay B is used by the first device to obtain the delay C according to the delay A and the delay B, and the delay A It includes the delay of the stream being transmitted from the talker of the streaming service provider to the first device, and the delay C includes the delay of the stream being transmitted from the talker to the second TSN device.
The method according to claim 13, wherein the request message of the first device carries the delay A.
The method according to claim 14, wherein when the request message of the first device carries the delay A, the SMF sending the delay B to the first device comprises:

The SMF sends the time delay B and the time delay A to the first device.
A communication method, characterized in that it comprises:

The session management function SMF network element receives a request message from the second device. The request message is used to request delay B. The delay B includes bridge delay and flow from the second device to the second time sensitive Transmission delay of network TSN equipment;

The SMF sends the delay B to the second device; the delay B is used by the second device to obtain the delay C according to the delay A and the delay B, and the delay A includes flow The delay of transmission from the talker of the streaming service provider to the first device, and the delay C includes the delay of transmission of the stream from the talker to the second TSN device.
The method according to claim 16, wherein the request message of the second device carries the time delay A.
The method according to claim 17, wherein when the request message of the second device carries the delay A, the SMF sending the delay B to the second device comprises:

The SMF sends the time delay B and the time delay A to the second device.
A communication device, characterized in that it comprises a device for executing any one of claims 1, 2, 3 to 5, 6 to 8, 9, 10, 11, 12, 13 to 15 or 16 to 18 The module of the method.
A communication device, characterized by comprising a processor and a communication interface, the communication interface being used to receive signals from other communication devices other than the communication device and transmit them to or from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement claims 1, 2, 3 to 5, 6 to 8, 9, 10, 11, through logic circuits or executing computer programs. 12. The method of any one of 13 to 15 or 16 to 18.
A computer-readable storage medium, characterized in that, the computer-readable storage medium stores a computer program, and when the computer program is executed, it realizes the following: , 10, 11, 12, 13 to 15, or 16 to 18.
A communication system is characterized by comprising: network equipment and terminal equipment, wherein:

The network device is the UPF according to any one of claims 1, 2, 11, 12, 13 to 15 or 16 to 18;

The network device is the first device according to any one of claims 3 to 5;

The network device is the second device according to any one of claims 6 to 8;

The terminal device is the first terminal device according to claim 9;

The terminal device is the second terminal device according to claim 10;

The terminal device is the first device according to any one of claims 3 to 5;

The terminal device is the second device according to any one of claims 6 to 8.