WO2021147999A1

WO2021147999A1 - Method for transmitting multicast data service, network device, and terminal device

Info

Publication number: WO2021147999A1
Application number: PCT/CN2021/073290
Authority: WO
Inventors: 张艳霞; 谢振华
Original assignee: 维沃移动通信有限公司
Priority date: 2020-01-22
Filing date: 2021-01-22
Publication date: 2021-07-29
Also published as: CN113163340A; CN113163340B

Abstract

Disclosed in embodiments of the present invention are a method for transmitting a multicast data service, a network device, and a terminal device. The method for transmitting the multicast data service comprises: obtaining first indication information; and on the basis of the first indication information, determining whether to convert a transmission mode of the multicast data service from a first transmission mode to a second transmission mode.

Description

Method, network equipment and terminal equipment for transmitting multicast data service

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010075649.5 filed in China on January 22, 2020, the entire content of which is incorporated herein by reference.

Technical field

The present invention relates to the field of communications, in particular to a method, network equipment and terminal equipment for transmitting multicast data services.

Background technique

At present, in the Long Term Evolution (LTE) system, the Multi-cell/multicast Coordination Entity (MCE) can decide whether a certain multicast data service can pass through the multicast/multicast single frequency network (Multicast Broadcast Single Frequency Network, MBSFN) transmission. However, in the New Radio (NR) system, the core network is no longer based on network elements with complete software and hardware to provide services, but based on network functions in the form of software. In this way, the existing multicast data services correspond to The network element of the network cannot be adapted to the new architecture through simple changes, which affects the application of multicast data services in the NR system, and thus cannot realize the dynamic switching between the unicast transmission mode and the multicast transmission mode during the transmission of the multicast data service. .

Summary of the invention

One of the technical problems solved by the embodiments of the present invention is how to realize dynamic switching between the unicast transmission mode and the multicast transmission mode in the process of transmitting the multicast data service.

In the first aspect, an embodiment of the present invention provides a method for transmitting a multicast data service, which is applied to a network device, and the method includes:

Acquire first indication information; based on the first indication information, determine whether to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode.

In a second aspect, an embodiment of the present invention provides a network device, and the network device includes:

The obtaining module is configured to obtain the first indication information; the determining module is configured to determine whether to convert the multicast data service from sending in the first transmission mode to sending in the second transmission mode based on the first indication information.

In a third aspect, an embodiment of the present invention provides a network device, including: a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When realizing the steps of the method as described in the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method described in the first aspect are implemented .

In the fifth aspect, an embodiment of the present invention provides a method for transmitting a multicast data service, which is applied to a terminal device, and the method includes:

In the process of receiving the multicast data service through the data channel corresponding to the first transmission mode, the target indication information sent by the network device is received, where the target indication information is used to indicate that the multicast data service is routed through the first transmission mode. Mode transmission is converted to transmission through the second transmission mode.

In a sixth aspect, an embodiment of the present invention provides a terminal device, and the terminal device includes:

The receiving module is used to receive the target indication information sent by the network device during the process of receiving the multicast data service through the data channel corresponding to the first transmission mode, where the target indication information is used to indicate that the multicast data service is routed through The transmission in the first transmission mode is converted to transmission in the second transmission mode.

In a seventh aspect, an embodiment of the present invention provides a terminal device, including: a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When realizing the steps of the method as described in the fifth aspect.

In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method described in the fifth aspect are implemented .

In the embodiment of the present invention, the network side may decide whether to convert the multicast data service currently sent in the first transmission mode to the second transmission mode based on the acquired information (ie, the first indication information). In this way, through the technical solution in the embodiment of the present invention, the network side can realize the decision of dynamically switching the transmission of the multicast data service between different transmission modes, thereby realizing the optimal use of network resources.

Description of the drawings

The drawings described here are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and the description thereof are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

FIG. 1 is a schematic flowchart of a method for transmitting a multicast data service in an embodiment of the present invention;

2 is a schematic flowchart of a second method for transmitting multicast data services in an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a third method for transmitting a multicast data service in an embodiment of the present invention;

4 is a schematic flowchart of a fourth method for transmitting a multicast data service in an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a fifth method for transmitting a multicast data service in an embodiment of the present invention;

6 is a schematic flowchart of a sixth method for transmitting a multicast data service in an embodiment of the present invention;

Figure 7 is a schematic structural diagram of a network device in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a terminal device in an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a second type of network device in an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of a second type of terminal device in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WidebandCode) Division Multiple Access, WCDMA), General Packet Radio Service (GPRS), Long Term Evolution/Enhanced Long Term Evolution (Long Term Evolution Advanced, LTE-A), NR, etc.

User-side UE, which can also be called terminal equipment (Mobile Terminal), mobile user equipment, etc., can communicate with one or more core networks via a radio access network (RAN), and the user equipment can be a terminal device , Such as mobile phones (or “cellular” phones) and computers with terminal equipment. For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, which exchange language and information with wireless access networks. / Or data.

Network equipment, also called a base station, can be a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (evolutional Node B) in LTE , ENB or e-NodeB) and 5G base station (gNB).

The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1, an embodiment of the present invention provides a method for transmitting multicast data services, which is executed by a network device. The network device may be a core network (CN) device or an access network (Radio Access). Network, RAN) equipment. The method can include the following process steps:

Step 101: Obtain first indication information.

Step 103: Based on the foregoing first indication information, determine whether to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode.

Optionally, in the method for transmitting a multicast data service in the embodiment of the present invention, if the first transmission mode is a multicast transmission mode, the second transmission mode is a unicast transmission mode.

Optionally, in the method for transmitting a multicast data service in the embodiment of the present invention, if the first transmission mode is a unicast transmission mode, the second transmission mode is a multicast transmission mode.

Optionally, for different types of network devices, the technical solutions corresponding to the method for transmitting multicast data services in the embodiments of the present invention can be implemented based on different specific embodiments, including but not limited to the following specific embodiments:

Specific embodiment one

In this specific embodiment 1, the method for transmitting multicast data services in the embodiment of the present invention is executed by the access network device, that is, the access network device makes a decision to multi-cast based on the corresponding first indication information obtained. The switching of the transmission mode of the broadcast data service.

Optionally, in the method for transmitting a multicast data service of this specific embodiment 1, the foregoing step 101 may be performed as follows:

Receiving the first indication information reported by the terminal device corresponding to the multicast data service.

It can be understood that, for the access network device, whether to send the multicast data service between different transmission modes can be realized based on the relevant information reported by each terminal device corresponding to the multicast data service (that is, the first indication information) Dynamic switching decision.

Optionally, in the method for transmitting a multicast data service of this specific embodiment 1, the foregoing step 103 may be performed as follows:

In a case where the quantity of the first indication information satisfies the first preset condition, it is determined to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode.

It can be understood that only when the acquired quantity of the first indication information reported by each terminal device corresponding to the multicast data service meets a certain condition (that is, the first preset condition), the multicast data service can be passed through the first indication information. The decision to switch from one transmission mode transmission to transmission through the second transmission mode avoids the random conversion of the transmission mode of the multicast data service, which affects the transmission efficiency of the multicast data service.

Optionally, in the method for transmitting a multicast data service in this specific embodiment 1, the above-mentioned first indication information includes but is not limited to at least one of the following:

(1) Information used to instruct the terminal device to generate a first response to the multicast data service. The first response includes but is not limited to wishing to receive, receiving or interested in receiving. In other words, when the terminal device generates any of the foregoing first responses to the multicast data service, it indicates that the terminal device generates a positive response to the reception of the multicast data service.

Based on this, the above-mentioned scheme of determining to convert the multicast data service from sending in the first transmission mode to sending in the second transmission mode under the condition that the quantity of the first indication information meets the first preset condition can be implemented as follows content:

In the case that the amount of information obtained for instructing the terminal device to generate a first response to the multicast data service meets the first preset condition, it is determined to convert the multicast data service from sending through the first transmission mode to passing through the first transmission mode. Two transmission mode transmission.

Further optionally, in a case where the first transmission mode is a multicast transmission mode and the second transmission is a unicast transmission mode, the information obtained above is used to instruct the terminal device to generate a first response to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The number of acquired information used to instruct the terminal device to generate a first response to the multicast data service is less than the corresponding first number. In other words, the number of terminal devices that generate the above-mentioned positive responses to the multicast data service is sufficiently small.

Further optionally, in the case where the first transmission mode is a unicast transmission mode and the second transmission is a multicast transmission mode, the information obtained above is used to instruct the terminal device to generate a first response to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The quantity of acquired information used to instruct the terminal device to generate a first response to the multicast data service is greater than or equal to the corresponding second quantity. In other words, the number of terminal devices that generate the above-mentioned positive responses to the multicast data service is sufficiently large.

It can be understood that when the access network device decides whether to switch the multicast data service from sending in the first transmission mode to sending it in the second transmission mode, it can refer to the statistics of the terminal equipment that actively responds to the multicast data service. The total number of parameters.

Optionally, when the access network device determines that no UE wants to receive or is receiving or is interested in receiving the multicast data service, that is, when no UE generates a first response or a positive response to the multicast data service, it can be deactivated or released The multicast data channel of the multicast data service (that is, the data channel corresponding to the multicast transmission mode). Or, when the access network device determines that no UE wants to receive or is receiving or is interested in receiving the multicast data service, that is, when no UE generates a first response or a positive response to the multicast data service, it can instruct the core network device (such as AMF) Deactivate or release the multicast data channel of the multicast data service.

(2) Information used to instruct the terminal device to generate a second response to the multicast data service. The second response includes but is not limited to not wishing to receive, stopping receiving, or having no interest in receiving. In other words, when the terminal device generates any of the foregoing second responses to the multicast data service, it indicates that the terminal device generates a negative response to the reception of the multicast data service.

In the case that the amount of information obtained to instruct the terminal device to generate a second response to the multicast data service meets the first preset condition, it is determined to convert the multicast data service from sending through the first transmission mode to passing through the first transmission mode. Two transmission mode transmission.

Further optionally, in a case where the first transmission mode is a multicast transmission mode and the second transmission is a unicast transmission mode, the information obtained above is used to instruct the terminal device to generate a second response to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The quantity of acquired information used to instruct the terminal device to generate a second response to the multicast data service is greater than or equal to the corresponding third quantity. In other words, the number of terminal devices that generate the above-mentioned negative responses to the multicast data service is sufficiently large.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the information obtained above is used to instruct the terminal device to generate a second response to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The number of acquired information used to instruct the terminal device to generate a second response to the multicast data service is less than the corresponding fourth number. In other words, the number of terminal devices that generate the aforementioned negative responses to the multicast data service is sufficiently small.

It can be understood that when the access network device decides whether to switch the multicast data service from sending in the first transmission mode to sending it in the second transmission mode, it can refer to the statistics of terminal devices that have negatively responded to the multicast data service. The total number of parameters.

(3) Information used to instruct the terminal device to leave the service area corresponding to the multicast data service. That is, the first indication information may be used to indicate that the terminal device no longer receives the multicast data service.

In the case that the amount of information obtained to instruct the terminal device to leave the service area corresponding to the multicast data service satisfies the first preset condition, it is determined to convert the multicast data service from sending through the first transmission mode to passing through the second transmission mode. Transmission mode transmission.

Further optionally, in the case where the first transmission mode is the multicast transmission mode and the second transmission is the unicast transmission mode, the information obtained above for instructing the terminal device to leave the service area corresponding to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The number of acquired information used to indicate that the terminal device leaves the service area corresponding to the multicast data service is greater than or equal to the corresponding fifth number. In other words, the number of terminal devices leaving the service area corresponding to the multicast data service is sufficiently large.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the information obtained above for instructing the terminal device to leave the service area corresponding to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The number of acquired information used to indicate that the terminal device leaves the service area corresponding to the multicast data service is less than the corresponding sixth number. In other words, the number of terminal devices leaving the service area corresponding to the multicast data service is sufficiently small.

It can be understood that when the access network device decides whether to switch the multicast data service from sending in the first transmission mode to sending it in the second transmission mode, it can refer to the statistical report of the service area corresponding to the multicast data service. This parameter indicates the total number of terminal devices for information.

(4) Information used to instruct the terminal device to enter the service area corresponding to the multicast data service. That is, the first indication information may be used to indicate that the terminal device will receive the multicast data service.

In the case that the amount of information obtained to indicate that the terminal device enters the service area corresponding to the multicast data service meets the first preset condition, it is determined to convert the multicast data service from sending through the first transmission mode to passing through the second transmission mode. Transmission mode transmission.

Further optionally, in the case where the first transmission mode is the multicast transmission mode and the second transmission is the unicast transmission mode, the information obtained above for instructing the terminal device to enter the service area corresponding to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The number of acquired information used to indicate that the terminal device enters the service area corresponding to the multicast data service is less than the corresponding seventh number. In other words, the number of terminal devices entering the service area corresponding to the multicast data service is sufficiently small.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the information obtained above for instructing the terminal device to enter the service area corresponding to the multicast data service The quantity that satisfies the first preset condition can be understood as:

The number of acquired information used to indicate that the terminal device enters the service area corresponding to the multicast data service is greater than or equal to the corresponding eighth number. In other words, the number of terminal devices entering the service area corresponding to the multicast data service is sufficiently large.

It can be understood that when the access network device decides whether to switch the multicast data service from sending in the first transmission mode to sending it in the second transmission mode, it can refer to the statistical report of entering the service area corresponding to the multicast data service. This parameter indicates the total number of terminal devices for information.

Optionally, the values of the foregoing first to eighth numbers may be determined based on protocol definition, network device configuration, or preset settings.

It can be seen from the above that the access network device can pass the multicast data service through the first preset condition when the quantity of at least one specific first indication information in (1) to (4) satisfies the corresponding first preset condition. The transmission mode transmission is converted to transmission through the second transmission mode. For example, there are currently 5 UEs corresponding to the multicast data service. The multicast data service is currently sent in the unicast transmission mode (that is, the first transmission mode). The above-mentioned first response generated by the broadcast data service is higher than the corresponding second number (for example, 2), the multicast data service can be converted to be sent through the multicast transmission mode (ie, the second transmission mode); or, if it is passed Counting statistics show that 3 UEs produced the above-mentioned first response to the multicast data service, which is higher than the corresponding second number (for example, 2), and 1 UE produced the above-mentioned second response to the multicast data service, which is low. For the corresponding fourth number (for example, 2), the multicast data service can be converted from being sent in a unicast transmission mode to being sent in a multicast transmission mode.

In summary, the access network device can decide whether to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode based on the actual demand of each terminal device for the multicast data service, which is reliable and accurate.

Optionally, in the method for transmitting a multicast data service shown in this specific embodiment 1, after the access network device decides to convert the multicast data service from being sent in the first transmission mode to being sent in the second transmission mode , And can also include the following:

In an example, the second indication information is sent to the core network device, and the second indication information is used to instruct the access network device to determine to convert the multicast data service from being sent in the first transmission mode to being sent in the second transmission mode.

It can be understood that in this example, the access network device can only notify the core network device that it has made a decision to convert the multicast data service from sending in the first transmission mode to sending in the second transmission mode, without the core network device creating The data channel corresponding to the second transmission mode may continue to retain the data channel corresponding to the first transmission mode. Exemplarily, the access network device notifies the core network device that it has made a decision to switch the multicast data service from the multicast transmission mode to the unicast transmission mode, and the core network device can continue to keep the multicast data service on the core network side. It is still sent in the multicast transmission mode, and the multicast data service is converted to the unicast transmission mode on the access network side for transmission. Exemplarily, the access network device may notify the core network device that it has made a decision to convert the multicast data service from sending through the first transmission mode to being sent through the second transmission mode, and the core network device may also create or activate or restore the multicast data service. The data channel corresponding to the second transmission. Exemplarily, the access network device notifies the core network device that it has made a decision to convert the multicast transmission mode of the multicast data service to the unicast transmission mode, and the core network device can establish or activate the multicast data service in the core network. Unicast data channel on the side.

Optionally, this example one is applicable to a scenario where a multicast data service is converted from being sent in a multicast transmission mode to being sent in a unicast transmission mode.

In another example, the third indication information is sent to the core network device, and the third indication information is used to instruct the core network device to establish a data channel corresponding to the second transmission mode.

It can be understood that, in this example, after the access network device has made a decision to switch the multicast data service from sending through the first transmission mode to being sent through the second transmission mode, it needs to further instruct the core network device to create the second transmission mode. The corresponding data channel is consistent with the access network side.

Specific embodiment two

In the second embodiment, the core network device executes the method for transmitting the multicast data service of the embodiment of the present invention, that is, the core network device decides to transfer the multicast data based on the corresponding first indication information acquired. Switching of the transmission mode of the business.

Optionally, in the method for transmitting a multicast data service of this specific embodiment 2, the foregoing step 101 may be executed as the following:

Receiving the first indication information reported by the access network device corresponding to the multicast data service.

It can be understood that, for the core network device, the dynamic of sending the multicast data service between different transmission modes can be realized based on the related information reported by the access network device corresponding to the multicast data service (that is, the first indication information). Switching decision.

Optionally, in the method for transmitting a multicast data service of this specific embodiment 2, for the foregoing step 103, the execution is as follows:

In a case where the first indication information satisfies the second preset condition, it is determined to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode.

It can be understood that only when the acquired first indication information reported by each terminal device corresponding to the multicast data service satisfies a certain condition (that is, the second preset condition), the multicast data service can be transmitted through the first transmission. Mode transmission is converted to a decision to be transmitted through the second transmission mode, so as to avoid the random conversion of the transmission mode of the multicast data service, which will affect the transmission efficiency of the multicast data service.

Optionally, in the method for transmitting a multicast data service in this specific embodiment 2, the above-mentioned first indication information includes but is not limited to at least one of the following:

(1) It is used to indicate the total number of terminal devices that generate a first response to the multicast data service. The first response includes, but is not limited to, wishing to receive, receiving, or interested in receiving. In other words, when the terminal device generates any of the foregoing first responses to the multicast data service, it indicates that the terminal device generates a positive response to the reception of the multicast data service.

Based on this, when the first indication information satisfies the first preset condition, the above-mentioned solution for determining to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode can be implemented as follows:

In the case that the acquired total number of terminal devices that indicate the first response to the multicast data service meets the second preset condition, it is determined to convert the multicast data service from sending through the first transmission mode to through the second transmission. Mode to send.

Further optionally, in the case where the first transmission mode is the multicast transmission mode and the second transmission is the unicast transmission mode, the obtained value is used to indicate the total number of terminal devices that generate the first response to the multicast data service Satisfying the second preset condition can be understood as:

The total number of acquired terminal devices used to indicate that the first response to the multicast data service is generated is less than the corresponding ninth number. In other words, the number of terminal devices that generate the above-mentioned positive responses to the multicast data service is sufficiently small.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the obtained value is used to indicate the total number of terminal devices that generate the first response to the multicast data service Satisfying the second preset condition can be understood as:

The total number of acquired terminal devices used to indicate that the first response to the multicast data service is generated is greater than or equal to the corresponding tenth number. In other words, the number of terminal devices that generate the above-mentioned positive responses to the multicast data service is sufficiently large.

Optionally, when the core network device determines that no UE wishes to receive or is receiving or is interested in receiving the multicast data service, that is, when no UE generates a first response or a positive response to the multicast data service, it may deactivate or release the multicast data service. The multicast data channel of the multicast data service (that is, the data channel corresponding to the multicast transmission mode). Or, when the core network device determines that no UE wants to receive or is receiving or is interested in receiving the multicast data service, that is, when no UE generates a first response or a positive response to the multicast data service, it may instruct the access network device to deactivate Or release the multicast data channel of the multicast data service.

(2) It is used to indicate the first quantity level corresponding to the total number of terminal devices that generate the above-mentioned first response to the multicast data service. That is, the first indication information may be used to indicate the quantity level (ie, the first quantity level) corresponding to the total number of terminal devices that have positively responded to the multicast data service as counted by the access network device.

Based on this, when the first indication information satisfies the second preset condition, it is determined that the multicast data service is converted from being sent in the first transmission mode to being sent in the second transmission mode, which can be implemented as follows:

In the case that the obtained first quantity level corresponding to the total number of terminal devices that are used to indicate the above-mentioned first response to the multicast data service meets the second preset condition, it is determined that the multicast data service is routed through the first transmission mode The transmission is converted to transmission through the second transmission mode.

Further optionally, in the case where the first transmission mode is the multicast transmission mode and the second transmission is the unicast transmission mode, the obtained information used to indicate the terminal device that has the first response to the multicast data service The first quantity level corresponding to the total meeting the second preset condition can be understood as:

The acquired first quantity level corresponding to the total number of terminal devices that are used to indicate the above-mentioned first response to the multicast data service is lower than a lower preset level. In other words, the number of terminal devices that generate the aforementioned positive responses to the multicast data service is sufficiently small.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the obtained information is used to indicate the terminal device that has the first response to the multicast data service. The first quantity level corresponding to the total meeting the second preset condition can be understood as:

The acquired first quantitative level corresponding to the total number of terminal devices that are used to indicate the above-mentioned first response to the multicast data service is higher than a higher preset level. In other words, the number of terminal devices that generate the above-mentioned positive responses to the multicast data service is sufficiently large.

It can be understood that when the core network device decides whether to switch the multicast data service from sending in the first transmission mode to the second transmission mode, the total number of terminal devices that actively respond to the multicast data service can be referred to. Corresponding to this parameter of quantity level.

(3) It is used to indicate the total number of terminal devices that generate a second response to the multicast data service. The second response includes, but is not limited to, unwilling to receive, stop receiving, or no interest in receiving. In other words, when the terminal device generates any of the foregoing second responses to the multicast data service, it indicates that the terminal device generates a negative response to the reception of the multicast data service.

In the case that the acquired total number of terminal devices that indicate the second response to the multicast data service meets the second preset condition, it is determined to convert the multicast data service from sending in the first transmission mode to sending in the second transmission mode. Mode to send.

Further optionally, in the case where the first transmission mode is a multicast transmission mode and the second transmission is a unicast transmission mode, the obtained number is used to indicate the total number of terminal devices that generate a second response to the multicast data service Satisfying the second preset condition can be understood as:

The total number of acquired terminal devices used to indicate that the second response to the multicast data service is generated is greater than or equal to the corresponding eleventh number. In other words, the number of terminal devices that generate the above-mentioned negative responses to the multicast data service is sufficiently large.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the obtained number is used to indicate the total number of terminal devices that generate a second response to the multicast data service Satisfying the second preset condition can be understood as:

The total number of acquired terminal devices used to indicate the second response to the multicast data service is less than the corresponding twelfth number. In other words, the number of terminal devices that generate the aforementioned negative responses to the multicast data service is sufficiently small.

(4) It is used to indicate the second quantity level corresponding to the total number of terminal devices that have the above-mentioned second response to the multicast data service. That is, the first indication information may be used to indicate the quantity level (that is, the second quantity level) corresponding to the total number of terminal devices that have negatively responded to the multicast data service as counted by the access network device.

In the case that the obtained second quantity level corresponding to the total number of terminal devices that are used to indicate the above-mentioned second response to the multicast data service meets the second preset condition, it is determined that the multicast data service is routed through the first transmission mode The transmission is converted to transmission through the second transmission mode.

Further optionally, in the case where the first transmission mode is the multicast transmission mode and the second transmission is the unicast transmission mode, the obtained information used to indicate the terminal device that generates the second response to the multicast data service The second quantity level corresponding to the total meeting the second preset condition can be understood as:

The acquired second quantity level corresponding to the total number of terminal devices that are used to indicate the above-mentioned second response to the multicast data service is higher than a higher preset level. In other words, the number of terminal devices that generate the above-mentioned negative responses to the multicast data service is sufficiently large.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the obtained information is used to indicate the terminal device that generates the second response to the multicast data service. The second quantity level corresponding to the total meeting the second preset condition can be understood as:

The acquired second quantity level corresponding to the total number of terminal devices that are used to indicate the above-mentioned second response to the multicast data service is lower than a lower preset level. In other words, the number of terminal devices that generate the aforementioned negative responses to the multicast data service is sufficiently small.

It can be understood that when the core network device decides whether to switch the multicast data service from sending in the first transmission mode to the second transmission mode, the total number of terminal devices that have negatively responded to the multicast data service can be referred to. Corresponding to this parameter of quantity level.

(5) The total number of information used to indicate that the terminal device leaves the service area corresponding to the multicast data service. That is, the first indication information may be used to indicate the total number of terminal devices that no longer receive the multicast data service.

In the case that the total number of information obtained to instruct the terminal device to leave the service area corresponding to the multicast data service meets the second preset condition, it is determined to convert the multicast data service from sending through the first transmission mode to passing through the second transmission mode. Transmission mode transmission.

Further optionally, in the case where the first transmission mode is the multicast transmission mode and the second transmission is the unicast transmission mode, the information obtained above for instructing the terminal device to leave the service area corresponding to the multicast data service The total meeting the second preset condition can be understood as:

The total number of acquired information used to indicate that the terminal device leaves the service area corresponding to the multicast data service is greater than or equal to the corresponding thirteenth quantity. In other words, the number of terminal devices leaving the service area corresponding to the multicast data service is sufficiently large.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the information obtained above for instructing the terminal device to leave the service area corresponding to the multicast data service The total meeting the second preset condition can be understood as:

The total number of acquired information indicating that the terminal device leaves the service area corresponding to the multicast data service is less than the corresponding fourteenth quantity. In other words, the number of terminal devices leaving the service area corresponding to the multicast data service is sufficiently small.

(6) The total number of information used to indicate that the terminal device enters the service area corresponding to the multicast data service. That is, the first indication information may be used to indicate that the terminal device will receive the multicast data service.

In the case that the total number of information obtained to indicate that the terminal device enters the service area corresponding to the multicast data service meets the second preset condition, it is determined to convert the multicast data service from sending through the first transmission mode to through the second transmission mode. Transmission mode transmission.

Further optionally, in the case where the first transmission mode is the multicast transmission mode and the second transmission is the unicast transmission mode, the information obtained above for instructing the terminal device to enter the service area corresponding to the multicast data service The total meeting the second preset condition can be understood as:

The total number of acquired information used to indicate that the terminal device enters the service area corresponding to the multicast data service is less than the corresponding fifteenth quantity. In other words, the number of terminal devices entering the service area corresponding to the multicast data service is sufficiently small.

Further optionally, in the case where the first transmission mode is the unicast transmission mode and the second transmission is the multicast transmission mode, the information obtained above for instructing the terminal device to enter the service area corresponding to the multicast data service The total meeting the second preset condition can be understood as:

The total number of information obtained to indicate that the terminal device enters the service area corresponding to the multicast data service is greater than or equal to the corresponding sixteenth quantity. In other words, the number of terminal devices entering the service area corresponding to the multicast data service is sufficiently large.

Optionally, the value of the ninth to sixteenth quantity and any preset level can be determined based on protocol definition, network device configuration, or preset settings.

It can be seen from the above that the access network device can pass the multicast data service through the first predetermined condition when the quantity of the specific first indication information in at least one of (1) to (6) meets the corresponding first preset condition. One transmission mode transmission is converted to transmission through the second transmission mode. For example, there are currently 5 UEs corresponding to the multicast data service. The multicast data service is currently sent in the unicast transmission mode (that is, the first transmission mode). The first response generated by the broadcast data service is higher than the corresponding tenth number (for example, 2), the multicast data service can be converted to be sent through the multicast transmission mode (ie, the second transmission mode); or, if it is passed Counting statistics show that 3 UEs produced the aforementioned first response to the multicast data service, which was higher than the corresponding twelfth number (for example, 2), and 1 UE produced the aforementioned second response to the multicast data service. If it is lower than the corresponding fourth number (for example, 2), the multicast data service can be converted from sending in a unicast transmission mode to sending in a multicast transmission mode.

Specific embodiment three

In the third embodiment, the core network device executes the method for transmitting the multicast data service of the embodiment of the present invention, that is, the core network device makes a decision to transfer the multicast data based on the corresponding first indication information obtained. Switching of the transmission mode of the business.

Optionally, in the method for transmitting a multicast data service of this specific embodiment 3, the foregoing step 101 may be executed as the following:

Receive first indication information sent by the target core network device, where the first indication information is used to indicate the total number of terminal devices that receive the multicast data service through the target transmission mode.

It can be understood that, for the core network device, the decision to dynamically switch the transmission of the multicast data service between different transmission modes can be implemented based on the related information (ie, the first indication information) sent by the target core network device that is different from it. . For example, when the Access and Mobility Management Function (AMF) device receives information about the number of terminal devices corresponding to the multicast data service from the User Plane Function (UPF) At this time, the decision can be made based on this, for example, the total number of UEs receiving the multicast data service.

Optionally, the foregoing target transmission mode is a unicast transmission mode. That is to say, the third embodiment is suitable for a scenario in which a multicast data service is transmitted from a unicast transmission mode to a multicast transmission mode.

Optionally, in the method for transmitting multicast data services shown in the second embodiment and the third embodiment, the core network device decides to switch the multicast data service from being sent through the first transmission mode to being sent through the second transmission mode. After the transmission mode is sent, you can also perform the following:

The data channel corresponding to the second transmission mode is established.

Optionally, in the method for transmitting a multicast data service in the embodiment of the present invention, after the decision to convert the multicast data service from sending through the first transmission mode to sending through the second transmission mode is implemented on the network side, further instructions may be given The terminal device establishes a data channel corresponding to the second transmission mode (for details, refer to the related processes shown in FIGS. 3 to 6), to send the multicast data service corresponding to the terminal device through the data channel corresponding to the second transmission mode. data.

Optionally, the foregoing process of establishing a data channel corresponding to the second transmission mode may include one of the following situations: (1) creating a new data channel corresponding to the second transmission mode; (2) restoring or activating the second transmission mode Corresponding to the data channel that has been created before.

Optionally, in the method for transmitting a multicast data service in the embodiment of the present invention, in the above step 3, after determining that the first transmission mode is converted to the second transmission mode based on the first indication information, the following content may be further included:

Send target configuration information to the terminal device corresponding to the multicast data service, where the target configuration information is used for the terminal device to associate the data channel corresponding to the first transmission mode with the data channel corresponding to the second transmission mode.

It can be understood that, considering that when the multicast data service is converted from sending through one transmission mode to sending through another transmission mode, there may be a transition period. During this period of time corresponding to the transition period, by transferring different transmissions The data channels corresponding to the modes are associated, and the terminal device can receive the data corresponding to the multicast data service from the data channels corresponding to different transmission modes at the same time, so as to ensure the continuity of receiving the multicast data service.

Correspondingly, for a terminal device, referring to FIG. 2, an embodiment of the present invention provides a method for transmitting a multicast data service, which is executed by the terminal device, and may include the following process steps:

Step 201: In the process of receiving the multicast data service through the data channel corresponding to the first transmission mode, the target indication information sent by the network device is received, and the target indication information is used to indicate that the multicast data service is converted from sending through the first transmission mode. To send through the second transmission mode.

In the embodiment of the present invention, it can be learned that the network side has decided to convert the multicast data service currently sent through the first transmission mode to the second transmission mode based on the instructions from the network side (ie, target indication information), so that the pairing can be adjusted in time. The multicast data service receiving strategy is to ensure the accuracy and reliability of the data corresponding to the multicast data service. At the same time, it is based on the decision of the network side to dynamically switch the sending of the multicast data service between different transmission modes. Adjusting the data receiving strategy will help optimize the use of network resources.

Optionally, in the method for transmitting a multicast data service in the embodiment of the present invention, the following content may be further included: establishing a data channel corresponding to the second transmission mode.

It can be understood that after the network side decides to switch the transmission mode for the multicast data service, the data channel corresponding to the second transmission mode can be established based on the corresponding configuration (for details, please refer to the related configuration shown in Figure 3 to Figure 6) , Continue to receive the data corresponding to the multicast data service through the data channel corresponding to the second transmission mode.

Optionally, in the method for transmitting a multicast data service in the embodiment of the present invention, the following content may also be included:

Receive target configuration information sent by the network device; based on the target configuration information, associate the data channel corresponding to the first transmission mode with the data channel corresponding to the second transmission mode.

Optionally, in the method for transmitting a multicast data service in the embodiment of the present invention, if the above-mentioned first transmission mode is a multicast transmission mode, the above-mentioned second transmission mode is a unicast transmission mode.

The following describes in detail the scheme of the method for transmitting the multicast data service according to the embodiment of the present invention with reference to FIG. 3 to FIG. 6.

Referring to Figure 3, the decision of the access network to convert the multicast data service from sending through the multicast transmission mode (ie, the first transmission mode) to the process of sending through the unicast transmission mode (ie, the second transmission mode) may include The following steps:

0: The network side provides multicast data services for the UE through the multicast transmission mode. For example, there are many UEs interested in the multicast data service 1 in a certain area, and the network side can send the data corresponding to the multicast data service to the UE through the multicast data channel.

1: The RAN side, that is, the gNB decides to switch the multicast transmission mode to the unicast transmission mode. For example, if the RAN side detects that the number of UEs wishing to receive the multicast data service 1 is lower than a threshold, it may decide to switch the multicast transmission mode to the unicast transmission mode.

Among them, the RAN side's decision to switch the multicast transmission mode to the unicast transmission mode can be based on one or more of the following information: the number of UEs that want to receive, are receiving, or are interested in receiving a certain multicast service (that is, to The number of terminal devices that positively respond to the reception of multicast data services); the number of UEs that do not want to receive, stop receiving, or are not interested in receiving a certain multicast service (that is, produce a negative response to the reception of multicast data services). The number of terminal equipments); through the UE leaving indication information, such as the UE instructing the network side that it will no longer receive multicast data service 1; through the UE joining indication information, such as the UE indicating the network side that it will receive multicast service 1.

2: The RAN side instructs the CN node (such as AMF) to convert the multicast transmission mode to the unicast transmission mode.

3: The CN node (such as a Session Management Function (SMF) device) provides configuration information to the RAN side and the UE to establish a data channel corresponding to the unicast transmission mode. Wherein, the configuration information includes one or more of the following:

(1) Establish a configuration message for a unicast protocol data unit (Protocol Data Unit, PDU) session (session). For a certain multicast data service 1, if a unicast PDU session has not been established before, the RAN side is requested to establish a unicast PDU session through an N2 message. For example, the N1 message is used to provide the UE with a configuration message for establishing a unicast PDU session.

(2) Restore the configuration information of the unicast PDU session. For example, for a multicast data service 1, a unicast PDU session was previously established, and configuration information is provided to facilitate the restoration of the unicast PDU session. For example, the N1 message is used to provide the UE with a configuration message for restoring the unicast PDU session.

Wherein, the request message for establishing a unicast PDU session or restoring a unicast PDU session contains one or a combination of the following information: unicast PDU session identification information, such as unicast PDU session ID; unicast service quality (Quality ofService, QoS) flow identification (QoS Flow Identifier, QFI) information; multicast service identification information, such as temporary mobile group identity (Temporary Mobile Group Identity, TMGI) multicast data service and unicast PDU session or unicast PDU session The QFI in the PDU is associated; the multicast PDU session identification information, such as the multicast data service identified by the multicast PDU session ID, is associated with the unicast PDU session or the QFI in the unicast PDU session; the network protocol of the multicast data service Multicast address (Internet Protocol MulticastAddress) information, such as the multicast data service identified by the IP, is associated with the unicast PDU session or the QFI in the unicast PDU session.

The RAN side provides configuration information to the UE to establish a data channel corresponding to the unicast transmission mode on the RAN side. For example, the base station gNB provides the UE with radio resource configuration for multicast data services through a radio resource control (Radio Resource Control, RRC) reconfiguration message. The information corresponding to the radio resource configuration includes one or a combination of the following: unicast PDU session identification information, such as unicast PDU session ID; unicast QoS identification information, such as QoS corresponding to the multicast data service identified by TMGI Stream ID; radio bearer ID information, such as the radio bearer ID corresponding to the multicast data service identified by TMGI.

4: The UE feeds back the confirmation message for establishing the data channel corresponding to the unicast transmission mode to the network side. For example, the network side configures the UE to establish the data channel corresponding to the unicast transmission mode of the multicast data service 1, and the UE replies to the network side that it has successfully established the data channel corresponding to the unicast transmission mode.

5: The UE receives the multicast data service through the unicast transmission mode.

In addition, the UE associates the multicast data channel and the unicast data channel of the multicast data service based on the configuration information provided by the core network and the RAN side, and detects duplicate data. If the UE learns that the multicast data service 1 is sent through the QFI 1 in the unicast PDU session1 according to the information provided by the core network, the UE can associate the unicast data channel and the multicast data channel corresponding to a certain multicast data service. This is mainly because it is considered that when the multicast data service is transferred from one transmission mode to another transmission mode, there may be a transition period. During the period corresponding to the transition period, the UE can simultaneously The data corresponding to the multicast data service is received from the data channels corresponding to different transmission modes to ensure the continuity of receiving the multicast data service.

Optionally, when associating data channels corresponding to different transmission modes, it can be processed by the application layer, and for repeated data packets received from the data channels corresponding to different transmission modes, the application layer can also perform repeated data The package is inspected and processed.

Referring to Figure 4, the core network's decision to convert the multicast data service from sending through the multicast transmission mode (ie, the first transmission mode) to being sent through the unicast transmission mode (ie, the second transmission mode) may include the following step:

1: The RAN side sends instruction information to the core network for it to decide whether to switch the multicast transmission mode to the unicast transmission mode. Among them, in FIG. 4, the gNB indicates that the CN can be converted to the unicast transmission mode as an example.

2: The CN side decides to switch the multicast transmission mode to the unicast transmission mode. For example, if the number of detected UEs wishing to receive the multicast data service 1 is lower than a threshold based on the indication information of the RAN side, the CN side may decide to switch the multicast transmission mode to the unicast transmission mode.

Among them, the CN side's decision to switch from the multicast transmission mode to the unicast transmission mode can be based on one or more of the following information: the number of UEs that want to receive, are receiving or are interested in receiving a multicast service reported by the RAN side (that is, to The number of terminal devices that positively respond to the reception of multicast data services); the number of UEs that do not want to receive, stop receiving, or are not interested in receiving a certain multicast service reported by the RAN side (that is, generate a negative response to the reception of multicast data services) The number of terminal devices that are expected to receive or are receiving or are interested in receiving a certain multicast data service reported by the RAN. For example, the number of UEs that describe the number of UEs can be a large number of UEs (such as More than 100 UEs), a medium number of UEs (such as 50-100 UEs) or a small number of UEs (such as less than 50 UEs); those who do not want to receive or stop receiving or are not interested in receiving a certain multicast service reported by the RAN The number of UEs, such as a large number of UEs (such as more than 100 UEs), a medium number of UEs (such as 50-100 UEs), or a small number of UEs (such as less than 50 UEs); the UE leaving indication information is used to describe the number of UEs. For example, the UE instructs the network side to no longer receive multicast data service 1; through the UE to join the indication information, such as the UE instructs the network side to receive multicast service 1.

(1) Establish a configuration message for unicast PDU session. For a certain multicast data service 1, if a unicast PDU session has not been established before, the RAN side is requested to establish a unicast PDU session through an N2 message. For example, the N1 message is used to provide the UE with a configuration message for establishing a unicast PDU session.

(2) Restore the configuration information of the unicast PDU session. For a certain multicast data service 1, a unicast PDU session was previously established, and configuration information is provided to facilitate the restoration of the unicast PDU session. For example, the N1 message is used to provide the UE with a configuration message for restoring the unicast PDU session.

Wherein, the request message for establishing a unicast PDU session or restoring a unicast PDU session includes one or a combination of the following information: unicast PDU session identification information, such as unicast PDU session ID; unicast QoS flow identification QFI Information; multicast service identification information, such as the temporary mobile group identity (Temporary Mobile Group Identity, TMGI) multicast data service is associated with the unicast PDU session or the QFI in the unicast PDU session; multicast PDU session identification information For example, the multicast data service identified by the multicast PDU session ID is associated with the unicast PDU session or the QFI in the unicast PDU session; the Internet Protocol Multicast Address information of the multicast data service, such as IP multicast The multicast data service identified by address is associated with the unicast PDU session or the QFI in the unicast PDU session.

The CN node provides configuration information to the UE to establish a data channel corresponding to the unicast transmission mode on the RAN side. Among them, the information corresponding to the radio resource configuration includes one or a combination of the following: unicast PDU session identification information, such as unicast PDU session ID; unicast QoS identification information, such as the QoS flow corresponding to the multicast data service identified by TMGI Identification; radio bearer identification information, such as the radio bearer identification corresponding to the multicast data service identified by TMGI.

Referring to Figure 5, the access network decides to convert the multicast data service from sending in the unicast transmission mode (that is, the first transmission mode) to sending in the multicast transmission mode (that is, the second transmission mode), which may include The following steps:

0: The network side provides multicast data services for the UE through the unicast transmission mode. For example, if the number of UEs interested in the multicast data service 1 in a certain area is small, the network side can send the data corresponding to the multicast data service to the UE through the unicast data channel.

1: The RAN side, that is, the gNB decides to switch the unicast transmission mode to the multicast transmission mode. For example, if the RAN side detects that the number of UEs wishing to receive the multicast data service 1 is higher than a threshold, it may decide to switch the unicast transmission mode to the multicast transmission mode.

Among them, the RAN side's decision to switch the unicast transmission mode to the multicast transmission mode can be based on one or more of the following information: the number of UEs that want to receive or are receiving or are interested in receiving a certain multicast service (that is, to The number of terminal devices that positively respond to the reception of multicast data services); the number of UEs that do not want to receive, stop receiving, or are not interested in receiving a certain multicast service (that is, produce a negative response to the reception of multicast data services). The number of terminal equipments); through the UE leaving indication information, such as the UE instructing the network side that it will no longer receive multicast data service 1; through the UE joining indication information, such as the UE indicating the network side that it will receive multicast service 1.

2: The RAN side instructs the CN node (such as AMF) to convert the unicast transmission mode to the multicast transmission mode.

3: The CN node (such as a Session Management Function (SMF) device) provides configuration information to the RAN side and the UE to establish a data channel corresponding to the unicast transmission mode. Wherein, the configuration information may include: a configuration message for establishing a multicast PDU session. For a certain multicast data service 1, if no multicast PDU session has been established before, the N2 message is used to request the RAN side to establish a multicast PDU session.

Wherein, the request message for establishing a multicast PDU session includes one or a combination of the following information: multicast PDU session identification information, such as multicast PDU session ID; multicast service identification information, such as TMGI; multicast data Service IP multicast address information, such as IP Multicast Address; unicast PDU session identification information, such as unicast PDU session corresponding to the multicast data service identified by TMGI; unicast QoS flow identification information, such as QoS flow in unicast PDU session 1 corresponds to the multicast data service of the TMGI ID; the radio bearer ID, such as the multicast data service of the TMGI ID corresponding to the radio bearer 1.

The RAN side provides configuration information to the UE to establish a data channel corresponding to the multicast transmission mode on the RAN side. For example, the base station gNB provides the UE with the radio resource configuration of the multicast data service through the RRC reconfiguration message. The information corresponding to the radio resource configuration includes one or a combination of the following: multicast PDU session identification information, such as multicast PDU session ID; and time-frequency resource location corresponding to the multicast data service.

4: The UE feeds back the confirmation message for establishing the data channel corresponding to the unicast transmission mode to the network side. For example, the network side configures the UE to establish a data channel corresponding to the multicast transmission mode of the multicast data service 1, and the UE replies to the network side that it has successfully established a data channel corresponding to the multicast transmission mode.

5: The UE receives the multicast data service through the multicast transmission mode.

In addition, the UE associates the multicast data channel and the unicast data channel of the multicast data service based on the configuration information provided by the core network and the RAN side, and detects duplicate data.

Referring to the process shown in Fig. 6 that the core network decides to convert the multicast data service from sending through the unicast transmission mode (ie the first transmission mode) to sending through the multicast transmission mode (ie the second transmission mode), the process may include the following step:

1: The RAN side sends instruction information to the core network for it to decide whether to switch the unicast transmission mode to the multicast transmission mode. Among them, in FIG. 6, the gNB indicates that the CN can be converted to the multicast transmission mode as an example.

2: The CN side decides to switch the unicast transmission mode to the multicast transmission mode. For example, based on the indication information from the RAN side, it is known that the number of detected UEs wishing to receive the multicast data service 1 is higher than a threshold, the CN side may decide to switch the multicast transmission mode to the unicast transmission mode.

Among them, the CN side's decision to switch the unicast transmission mode to the multicast transmission mode can be based on one or more of the following information: the number of UEs that wish to receive or are receiving or are interested in receiving a multicast service reported by the RAN side (that is, to The number of terminal devices that positively respond to the reception of multicast data services); the number of UEs that do not want to receive, stop receiving, or are not interested in receiving a certain multicast service reported by the RAN side (that is, generate a negative response to the reception of multicast data services) The number of terminal devices that are expected to receive or are receiving or are interested in receiving a certain multicast data service reported by the RAN. For example, the number of UEs that describe the number of UEs can be a large number of UEs (such as More than 100 UEs), a medium number of UEs (such as 50-100 UEs) or a small number of UEs (such as less than 50 UEs); those who do not want to receive or stop receiving or are not interested in receiving a certain multicast service reported by the RAN The number of UEs, such as a large number of UEs (such as more than 100 UEs), a medium number of UEs (such as 50-100 UEs), or a small number of UEs (such as less than 50 UEs); the UE leaving indication information is used to describe the number of UEs. For example, the UE instructs the network side to no longer receive multicast data service 1; through the UE to join the indication information, such as the UE instructs the network side to receive multicast service 1.

3: The CN node (such as the SMF device) provides configuration information to the RAN side and the UE to establish a data channel corresponding to the multicast transmission mode. Wherein, the configuration information may include: a configuration message for establishing a multicast PDU session. For a certain multicast data service 1, if no multicast PDU session has been established before, the N2 message is used to request the RAN side to establish a multicast PDU session; and the N1 message is used to provide the UE with a configuration message for establishing a multicast PDU session.

Wherein, the request message for establishing a multicast PDU session contains one or a combination of the following information: unicast PDU session identification information, such as unicast PDU session ID; unicast QoS flow identification QFI information; multicast service identification Information, such as multicast data services identified by TMGI and unicast PDU session or QFI in unicast PDU session; multicast PDU session identification information, such as multicast data services and unicast PDU identified by multicast PDU session ID The QFI in the session or unicast PDU session is associated; the IP multicast address information of the multicast data service, such as the multicast data service identified by the IP multicast address, is associated with the QFI in the unicast PDU session or unicast PDU session .

The CN node provides configuration information to the UE to establish a data channel corresponding to the multicast transmission mode on the RAN side. Among them, the information corresponding to the radio resource configuration includes one or a combination of the following: multicast PDU session identification information, such as multicast PDU session ID; the location of the time-frequency resource corresponding to the multicast data service.

4: The UE feeds back the confirmation message for establishing the data channel corresponding to the multicast transmission mode to the network side. For example, the network side configures the UE to establish a data channel corresponding to the multicast transmission mode of the multicast data service 1, and the UE replies to the network side that it has successfully established a data channel corresponding to the multicast transmission mode.

In addition, the UE associates the multicast data channel and the unicast data channel of the multicast data service based on the configuration information provided by the core network and the RAN side, and detects duplicate data. If the UE learns that the multicast data service 1 is sent through QFI 1 in the unicast PDU session1 according to the information provided by the core network, the UE can associate the unicast data channel and the multicast data channel corresponding to a certain multicast data service. This is mainly because it is considered that when the multicast data service is transferred from one transmission mode to another transmission mode, there may be a transition period. During the period corresponding to the transition period, the UE can simultaneously The data corresponding to the multicast data service is received from the data channels corresponding to different transmission modes to ensure the continuity of receiving the multicast data service.

In summary, in the method for transmitting multicast data services in the embodiment of the present invention, on the one hand, the RAN side can decide the unicast-multicast conversion, and instruct the core network to establish a unicast or multicast data channel, and the core network provides the RAN to the RAN. The side provides the associated configuration information of the unicast data channel and the multicast data channel; on the other hand, the CN side can decide the unicast/multicast conversion, instruct the establishment of the unicast or multicast data channel, and provide the unicast data channel to the RAN side The configuration information associated with the multicast data channel. In this way, through the RAN side or the CN side deciding unicast-multicast switching, the optimal use of network resources can be realized. In addition, the continuity of the multicast data service can be guaranteed through the association relationship between the unicast data channel and the multicast data channel of a certain multicast data service provided by the network side.

Referring to FIG. 7, an embodiment of the present invention provides a network device 300. The network device 300 includes: an acquisition module 301 and a determination module 303.

Wherein, the acquiring module 301 is configured to acquire the first indication information; the determining module 303 is configured to determine, based on the first indication information, whether to convert the multicast data service from sending in the first transmission mode to sending in the second transmission mode.

Optionally, in the network device 300 of the embodiment of the present invention, the above-mentioned obtaining module 301 may be used for:

When the network device is an access network device, receiving the first indication information reported by the terminal device corresponding to the multicast data service.

Optionally, in the network device 300 of the embodiment of the present invention, the above determining module 303 may be used for:

Optionally, in the network device 300 of the embodiment of the present invention, the above-mentioned first indication information includes at least one of the following: information used to instruct the terminal device to generate a first response to the multicast data service, and the first response includes a desire to receive, Receiving or interested in receiving; information used to instruct the terminal device to generate a second response to the multicast data service, the second response includes interest that does not want to receive, stop receiving, or not receiving; used to instruct the terminal device to leave the multicast data Information about the service area corresponding to the service; information used to instruct the terminal device to enter the service area corresponding to the multicast data service.

Optionally, the network device 300 of the embodiment of the present invention may further include:

The sending module is configured to send second indication information to the core network device, where the second indication information is used to instruct the access network device to determine to convert the multicast data service from being sent in the first transmission mode to being sent in the second transmission mode.

Optionally, in the network device 300 of the embodiment of the present invention, the above-mentioned sending module may also be used for:

Send third indication information to the core network device, where the third indication information is used to instruct the core network device to establish a data channel corresponding to the second transmission mode.

When the network device is a core network device, receiving the first indication information reported by the access network device corresponding to the multicast data service.

Optionally, in the network device 300 of the embodiment of the present invention, the foregoing first indication information includes at least one of the following: used to indicate the total number of terminal devices that generate a first response to the multicast data service, and the first response includes the , Receiving or interested in receiving; used to indicate the first quantity level corresponding to the total number of terminal devices that generated the first response to the multicast data service; used to indicate the total number of terminal devices that generated the second response to the multicast data service , The second response includes the interest of not wanting to receive, stop receiving, or not receiving; used to indicate the second quantity level corresponding to the total number of terminal devices that generated the second response to the multicast data service; used to instruct the terminal device to leave the multicast data The total number of information in the service area corresponding to the service; the total number of information used to indicate that the terminal device enters the service area corresponding to the multicast data service.

In a case where the network device is a core network device, receiving the first indication information sent by the target core network device, where the first indication information is used to indicate the total number of terminal devices that receive the multicast data service through the target transmission mode.

The creation module is used to establish a data channel corresponding to the second transmission mode.

The sending module is configured to send target configuration information to the terminal device corresponding to the multicast data service after determining that the first transmission mode is converted to the second transmission mode based on the first indication information. The target configuration information is used for the terminal device to transfer the first transmission mode to the second transmission mode. The data channel corresponding to the transmission mode is associated with the data channel corresponding to the second transmission mode.

Optionally, in the network device 300 of the embodiment of the present invention, if the above-mentioned first transmission mode is a multicast transmission mode, the above-mentioned second transmission mode is a unicast transmission mode.

Optionally, in the network device 300 of the embodiment of the present invention, if the first transmission mode is a unicast transmission mode, the second transmission mode is a multicast transmission mode.

It can be understood that the network device 300 provided in the embodiment of the present invention can implement the foregoing method for transmitting multicast data services executed by the network device 300, and the relevant explanations about the method for transmitting multicast data services are all applicable to the network device 300, here No longer.

Referring to FIG. 8, an embodiment of the present invention provides a terminal device 400, and the terminal device 400 includes:

The receiving module 401 is configured to receive the target indication information sent by the network device during the process of receiving the multicast data service through the data channel corresponding to the first transmission mode. The target indication information is used to indicate that the multicast data service is routed through the first transmission mode. Mode transmission is converted to transmission through the second transmission mode.

Optionally, the terminal device 400 of the embodiment of the present invention may further include:

Optionally, the terminal device 400 of the embodiment of the present invention may further include a processing module.

The above-mentioned receiving module 401 may also be used to receive target configuration information sent by the network device; the above-mentioned processing module is used to associate the data channel corresponding to the first transmission mode with the data channel corresponding to the second transmission mode based on the target configuration information.

Optionally, in the terminal device 400 of the embodiment of the present invention, if the above-mentioned first transmission mode is a multicast transmission mode, the above-mentioned second transmission mode is a unicast transmission mode.

Optionally, in the terminal device 400 of the embodiment of the present invention, if the above-mentioned first transmission mode is a unicast transmission mode, the above-mentioned second transmission mode is a multicast transmission mode.

It can be understood that the terminal device 400 provided by the embodiment of the present invention can implement the foregoing method for transmitting multicast data services executed by the terminal device 400, and the relevant explanations about the method for transmitting multicast data services are all applicable to the terminal device 400, here No longer.

Please refer to FIG. 9. FIG. 9 is a structural diagram of a network device applied in an embodiment of the present invention, which can implement the details of the method for transmitting a multicast data service in the foregoing embodiment and achieve the same effect. As shown in FIG. 9, the network device 500 includes: a processor 501, a transceiver 502, a memory 503, a user interface 504, and a bus interface 505, where:

In the embodiment of the present invention, the network device 500 further includes: a computer program that is stored in the memory 503 and can run on the processor 501, and the computer program is executed by the processor 501 to implement the following steps:

Acquire the first indication information; based on the first indication information, determine whether to convert the multicast data service from sending in the first transmission mode to sending in the second transmission mode.

In FIG. 9, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 501 and various circuits of the memory represented by the memory 503 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface 505 provides an interface. The transceiver 502 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 504 may also be an interface capable of connecting externally and internally with the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 can store data used by the processor 501 when performing operations.

In the embodiment of the present invention, the network side may decide whether to convert the multicast data service currently sent through the first transmission mode to the second transmission mode based on the acquired information (i.e., the first indication information). In this way, through the technical solution in the embodiment of the present invention, the network side can realize the decision of dynamically switching the transmission of the multicast data service between different transmission modes, thereby realizing the optimal use of network resources.

Fig. 10 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 600 shown in FIG. 10 includes: at least one processor 601, a memory 602, at least one network interface 604, and a user interface 603. The various components in the terminal device 600 are coupled together through the bus system 605. It can be understood that the bus system 605 is used to implement connection and communication between these components. In addition to the data bus, the bus system 605 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 605 in FIG. 10.

Wherein, the user interface 603 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).

It can be understood that the memory 602 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (SynchlinkDRAM, SLDRAM) and Direct Rambus RAM (DRRAM). The memory 602 of the system and method described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

In some embodiments, the memory 602 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: an operating system 6021 and an application 6022.

Among them, the operating system 6021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 6022 includes various application programs, such as a media player (MediaPlayer), a browser (Browser), etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present invention may be included in the application program 6022.

In the embodiment of the present invention, the terminal device 600 further includes: a computer program stored in the memory 602 and capable of running on the processor 601, and when the computer program is executed by the processor 601, the following steps are implemented:

In the process of receiving the multicast data service through the data channel corresponding to the first transmission mode, the target indication information sent by the network device is received, and the target indication information is used to indicate the conversion of the multicast data service from sending through the first transmission mode to passing through the first transmission mode. Two transmission mode transmission.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 601 or implemented by the processor 601. The processor 601 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 601 or instructions in the form of software. The aforementioned processor 601 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The computer-readable storage medium is located in the memory 602, and the processor 601 reads information in the memory 602, and completes the steps of the foregoing method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 601, each step of the method for transmitting a multicast data service in the foregoing embodiment is implemented.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in the present invention Electronic unit or its combination.

For software implementation, the technology described in the embodiments of the present invention can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present invention. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

The terminal device 600 can implement the various processes implemented by the terminal device in the foregoing embodiments, and in order to avoid repetition, details are not described herein again.

Preferably, the embodiment of the present invention further provides a network device, including a processor, a memory, and a computer program stored in the memory and running on the processor. When the computer program is executed by the processor, the implementation in the above-mentioned embodiment is implemented. Each process of the method for transmitting the multicast data service can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

The embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the method for transmitting a multicast data service applied to a network device in the above-mentioned embodiment is implemented Each process can achieve the same technical effect. To avoid repetition, I won’t repeat it here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.

Preferably, the embodiment of the present invention also provides a terminal device, including a processor, a memory, and a computer program stored in the memory and running on the processor. When the computer program is executed by the processor, the above-mentioned embodiment is implemented. Each process of the method for transmitting the multicast data service can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

The embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the method for transmitting a multicast data service applied to a terminal device in the above-mentioned embodiment is implemented Each process can achieve the same technical effect. To avoid repetition, I won’t repeat it here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present invention.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the scope of protection of the claims, and they all fall within the protection of the present invention.

Claims

A method for transmitting multicast data services, applied to a network device, and the method includes:

Obtain the first instruction information;

Based on the first indication information, it is determined whether to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode.
The method according to claim 1, wherein, when the network device is an access network device, the obtaining the first indication information comprises:

Receiving the first indication information reported by the terminal device corresponding to the multicast data service.
The method according to claim 2, wherein the determining whether to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode based on the first indication information comprises:

In a case where the quantity of the first indication information satisfies a first preset condition, it is determined to switch the multicast data service from being sent in the first transmission mode to being sent in the second transmission mode.
The method according to claim 3, wherein the first indication information includes at least one of the following:

Information used to instruct the terminal device to generate a first response to the multicast data service, where the first response includes a desire to receive, being received, or an interest in receiving;

Information used to instruct the terminal device to generate a second response to the multicast data service, where the second response includes interest in not wanting to receive, stopping receiving, or not receiving;

Information used to instruct the terminal device to leave the service area corresponding to the multicast data service;

Information used to instruct the terminal device to enter the service area corresponding to the multicast data service.
The method according to claim 3, wherein the method further comprises:

Send second indication information to the core network device, where the second indication information is used to instruct the access network device to determine to switch the multicast data service from sending through the first transmission mode to being sent through the second transmission mode. Transmission mode transmission.
The method according to claim 3, wherein the method further comprises:

Send third indication information to a core network device, where the third indication information is used to instruct the core network device to establish a data channel corresponding to the second transmission mode.
The method according to claim 1, wherein, when the network device is a core network device, the obtaining the first indication information comprises:

Receiving the first indication information reported by the access network device corresponding to the multicast data service.
8. The method according to claim 7, wherein the determining whether to switch the multicast data service from sending in a first transmission mode to sending in a second transmission mode based on the first indication information comprises:

In a case where the first indication information satisfies a second preset condition, it is determined to switch the multicast data service from being sent in the first transmission mode to being sent in the second transmission mode.
The method according to claim 8, wherein the first indication information includes at least one of the following:

It is used to indicate the total number of terminal devices that generate a first response to the multicast data service, where the first response includes wishing to receive, being received, or interested in receiving;

Used to indicate the first quantity level corresponding to the total number of terminal devices that generate the first response to the multicast data service;

It is used to indicate the total number of terminal devices that generate a second response to the multicast data service, where the second response includes interest in not wishing to receive, stopping receiving, or not receiving;

Used to indicate the second quantity level corresponding to the total number of terminal devices that generate the second response to the multicast data service;

The total number of information used to indicate that the terminal device leaves the service area corresponding to the multicast data service;

The total number of information used to indicate that the terminal device enters the service area corresponding to the multicast data service.
The method according to claim 1, wherein, when the network device is a core network device, the obtaining the first indication information comprises:

Receiving the first indication information sent by the target core network device, where the first indication information is used to indicate the total number of terminal devices that receive the multicast data service through the target transmission mode.
The method according to any one of claims 7-10, wherein the method further comprises:

Establishing a data channel corresponding to the second transmission mode.
The method according to claim 1, wherein after determining to switch the first transmission mode to the second transmission mode based on the first indication information, the method further comprises:

Send target configuration information to the terminal device corresponding to the multicast data service, where the target configuration information is used for the terminal device to associate the data channel corresponding to the first transmission mode with the data channel corresponding to the second transmission mode .
The method according to claim 1, wherein if the first transmission mode is a multicast transmission mode, the second transmission mode is a unicast transmission mode.
The method according to claim 1, wherein if the first transmission mode is a unicast transmission mode, the second transmission mode is a multicast transmission mode.
A method for transmitting multicast data services, applied to a terminal device, and the method includes:

In the process of receiving the multicast data service through the data channel corresponding to the first transmission mode, the target indication information sent by the network device is received, where the target indication information is used to indicate that the multicast data service is routed through the first transmission mode. Mode transmission is converted to transmission through the second transmission mode.
The method according to claim 15, wherein the method further comprises:

The data channel corresponding to the second transmission mode is established.
The method according to claim 16, wherein the method further comprises:

Receiving target configuration information sent by the network device;

Based on the target configuration information, the data channel corresponding to the first transmission mode is associated with the data channel corresponding to the second transmission mode.
The method according to claim 15, wherein if the first transmission mode is a multicast transmission mode, the second transmission mode is a unicast transmission mode.
The method according to claim 15, wherein if the first transmission mode is a unicast transmission mode, the second transmission mode is a multicast transmission mode.
A network device, wherein the network device includes:

An obtaining module for obtaining the first indication information;

The determining module is configured to determine, based on the first indication information, whether to switch the multicast data service from sending in the first transmission mode to sending in the second transmission mode.
The network device according to claim 20, wherein the acquisition module is configured to:

In a case where the network device is an access network device, receiving the first indication information reported by the terminal device corresponding to the multicast data service.
The network device according to claim 21, wherein the determining module is configured to:

In a case where the quantity of the first indication information satisfies a first preset condition, it is determined to switch the multicast data service from being sent in the first transmission mode to being sent in the second transmission mode.
The network device according to claim 22, wherein the first indication information includes at least one of the following:

Information used to instruct the terminal device to generate a first response to the multicast data service, where the first response includes a desire to receive, being received, or an interest in receiving;

Information used to instruct the terminal device to generate a second response to the multicast data service, where the second response includes interest in not wanting to receive, stopping receiving, or not receiving;

Information used to instruct the terminal device to leave the service area corresponding to the multicast data service;

Information used to instruct the terminal device to enter the service area corresponding to the multicast data service.
The network device according to claim 22, wherein the network device further comprises:

The sending module is configured to send second indication information to a core network device, where the second indication information is used to instruct the access network device to determine to convert the multicast data service from sending through the first transmission mode to being sent by Send through the second transmission mode.
The network device according to claim 22, wherein the network device further comprises:

The sending module is configured to send third indication information to a core network device, where the third indication information is used to instruct the core network device to establish a data channel corresponding to the second transmission mode.
The network device according to claim 20, wherein the acquisition module is configured to:

In a case where the network device is a core network device, receiving the first indication information reported by the access network device corresponding to the multicast data service.
The network device according to claim 26, wherein the determining module is configured to:

In a case where the first indication information satisfies a second preset condition, it is determined to switch the multicast data service from being sent in the first transmission mode to being sent in the second transmission mode.
The network device according to claim 27, wherein the first indication information includes at least one of the following:

It is used to indicate the total number of terminal devices that generate a first response to the multicast data service, where the first response includes wishing to receive, being received, or interested in receiving;

Used to indicate the first quantity level corresponding to the total number of terminal devices that generate the first response to the multicast data service;

It is used to indicate the total number of terminal devices that generate a second response to the multicast data service, where the second response includes interest in not wanting to receive, stopping receiving, or not receiving;

Used to indicate the second quantity level corresponding to the total number of terminal devices that generate the second response to the multicast data service;

The total number of information used to indicate that the terminal device leaves the service area corresponding to the multicast data service;

The total number of information used to indicate that the terminal device enters the service area corresponding to the multicast data service.
The network device according to claim 20, wherein the acquisition module is configured to:

In a case where the network device is a core network device, receiving the first indication information sent by the target core network device, where the first indication information is used to indicate a terminal device that receives the multicast data service through the target transmission mode total.
The network device according to any one of claims 26-29, wherein the network device further comprises:

The creation module is used to create a data channel corresponding to the second transmission mode.
The network device according to claim 20, wherein the network device further comprises:

The sending module is configured to send target configuration information to the terminal device corresponding to the multicast data service after determining that the first transmission mode is converted to the second transmission mode based on the first indication information, and the target The configuration information is used for the terminal device to associate the data channel corresponding to the first transmission mode with the data channel corresponding to the second transmission mode.
The network device according to claim 20, wherein if the first transmission mode is a multicast transmission mode, the second transmission mode is a unicast transmission mode.
The network device according to claim 20, wherein if the first transmission mode is a unicast transmission mode, the second transmission mode is a multicast transmission mode.
A terminal device, the terminal device includes:

The receiving module is configured to receive target indication information sent by the network device during the process of receiving the multicast data service through the data channel corresponding to the first transmission mode, where the target indication information is used to indicate that the multicast data service is routed through The transmission in the first transmission mode is converted to transmission in the second transmission mode.
The terminal device according to claim 34, wherein the terminal device further comprises:

The creation module is used to establish a data channel corresponding to the second transmission mode.
The terminal device according to claim 35, wherein the terminal device further comprises: a processing module;

The receiving module is also used to receive target configuration information sent by the network device;

The processing module is configured to associate a data channel corresponding to the first transmission mode with a data channel corresponding to the second transmission mode based on the target configuration information.
The terminal device according to claim 34, wherein if the first transmission mode is a multicast transmission mode, the second transmission mode is a unicast transmission mode.
The terminal device according to claim 34, wherein if the first transmission mode is a unicast transmission mode, the second transmission mode is a multicast transmission mode.
A network device, comprising: a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor is implemented as in claims 1 to 14 Any of the steps of the method.
A terminal device, comprising: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, the computer program being executed by the processor is implemented as in claims 15 to 19 Any of the steps of the method.
A computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 19 are realized.