CN113556219B

CN113556219B - Transmission method and related equipment for Multimedia Broadcast Multicast Service (MBMS)

Info

Publication number: CN113556219B
Application number: CN202010340221.9A
Authority: CN
Inventors: 张大钧
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2022-12-06
Anticipated expiration: 2040-04-26
Also published as: CN113556219A

Abstract

The application discloses a transmission method and related equipment of a Multimedia Broadcast Multicast Service (MBMS), which are used for improving the performance of the MBMS so as to meet the performance requirement of 5G NR on the MBMS. The method comprises the following steps: receiving first information sent by network side equipment, wherein the first information comprises a terminal identifier corresponding to an MBMS supported by the terminal equipment; determining time-frequency resources used by the terminal equipment for sending feedback information according to the first information, wherein the feedback information is used for indicating whether the terminal equipment successfully receives the MBMS data; and sending the feedback information to the network side equipment on the time frequency resource.

Description

Transmission method and related equipment for Multimedia Broadcast Multicast Service (MBMS)

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission method and related devices for a multimedia broadcast multicast service MBMS.

Background

With the rapid development of networks and the popularization of large-screen multifunctional mobile terminals, a large number of mobile data multimedia services and high-bandwidth multimedia services, such as video conferences, television broadcasts, video broadcasts and the like, appear, which can meet the multi-service requirements of mobile users and bring new service growth points for mobile operators.

In order to effectively utilize mobile network resources, a Multimedia Broadcast Multicast Service (MBMS) is proposed, which is a technology for transmitting data from one data source to a plurality of target mobile terminals, thereby realizing the sharing of network resources and improving the utilization rate of network resources, especially air interface resources.

A 5G New air interface (5G New roadio,5G NR) as a New generation radio access technology network puts forward a higher requirement on the performance of the MBMS service, and therefore how to improve the transmission efficiency of the MBMS service to meet the high performance requirement of the 5G NR on the MBMS service is a technical problem to be solved urgently at present.

Disclosure of Invention

The embodiment of the application provides a transmission method of a Multimedia Broadcast Multicast Service (MBMS) and related equipment, which are used for improving the performance of the MBMS so as to meet the performance requirement of 5G NR on the MBMS.

In a first aspect, a method for transmitting a multimedia broadcast multicast service MBMS is provided, where the method includes:

receiving first information sent by network side equipment, wherein the first information comprises a terminal identifier corresponding to an MBMS supported by the terminal equipment;

determining a time-frequency resource used by the terminal equipment for sending feedback information according to the first information, wherein the feedback information is used for indicating whether the terminal equipment successfully receives the MBMS data;

and sending the feedback information to the network side equipment on the time frequency resource.

In the embodiment of the application, the terminal device may determine, based on the first information sent by the network-side device, a time-frequency resource for sending the feedback information, and send the feedback information to the network-side device on the time-frequency resource, so that the network-side device can know whether the terminal device successfully receives the data of the MBMS, and thus, when the terminal device feeds back the data of the MBMS, the network-side device may send the data of the MBMS to the terminal device again, thereby providing the transmission efficiency of the MBMS and improving the service performance of the MBMS. And because the terminal equipment sends the feedback information on the time-frequency resource belonging to the terminal equipment, the accuracy of the network side equipment for receiving the feedback information can be ensured.

In one possible design, the first information is carried in radio resource control RRC signaling or medium access control element MAC CE signaling or downlink control information DCI.

In the embodiment of the application, the first information from the network side device to the terminal device may be carried in multiple signaling, that is, the network side device may send the first information to the terminal device in multiple ways, which improves flexibility of sending information.

In one possible design, determining, according to the first information, a time-frequency resource used by the terminal device for sending feedback information includes:

receiving first downlink control information DCI sent by the network side equipment, wherein the first DCI is used for scheduling data of a first MBMS;

according to a first corresponding relation between at least one terminal identifier of the terminal equipment and at least one time-frequency resource, the first MBMS and the first information, determining the time-frequency resource for sending first feedback information, wherein the first feedback information is used for indicating whether the terminal equipment successfully receives the data of the first MBMS.

In the embodiment of the application, after determining which MBMS is to be received, the terminal device determines, through the MBMS, the first information and the correspondence between the terminal identifier and the time-frequency resource, the time-frequency resource used by the terminal device to send the feedback information for the MBMS, so as to ensure the accuracy of determining the time-frequency resource, and further ensure the validity of receiving the feedback information by the network side device.

In one possible design, the first corresponding relationship is pre-stored by the terminal device, or the first corresponding relationship is carried in the first DCI.

In the embodiment of the application, the corresponding relationship between the terminal identifier and the time-frequency resource can be pre-stored by the terminal equipment, so that when the time-frequency resource needs to be determined, the terminal equipment can call the stored corresponding relationship to determine the corresponding time-frequency resource as long as knowing the current terminal identifier, and the timeliness of determining the video resource is improved; the corresponding relationship between the terminal identifier and the time-frequency resource may also be carried in the first DCI, that is, the network side device sends the DCI to the terminal device when the terminal device needs to use the corresponding relationship, so that the terminal device does not need to store the DCI, and the storage pressure of the terminal device is reduced.

In a possible design, the first information includes or indicates a second correspondence, where the second correspondence is a correspondence between at least one terminal identifier of the terminal device and at least one MBMS session identifier.

In this embodiment of the present application, the second correspondence is a correspondence between the terminal identifier and the MBMS session identifier, and when the first information includes the second correspondence, the terminal device may determine the terminal identifier corresponding to the current MBMS according to the correspondence. When the first information indicates the second corresponding relationship, the second corresponding relationship can be obtained in the indicating mode, and then the terminal identification corresponding to the current MBMS is determined, so that the flexibility of obtaining the second corresponding relationship is improved.

In a possible design, the first information indicates the second correspondence by an identification order of at least one terminal identifier of the terminal device.

In the embodiment of the present application, at least one terminal identifier may be arranged and transmitted in a specific sequence, where each sequence in the specific sequence is associated with a different MBMS session identifier, and then the terminal identifier of the current MBMS may be determined according to the association relationship.

In one possible design, the method further includes:

sending second information to the network side equipment, wherein the second information is used for indicating that the MBMS supported by the terminal equipment changes;

and receiving third information sent by the network side equipment, wherein the third information comprises a terminal identifier corresponding to the updated MBMS.

In the embodiment of the application, after the MBMS supported by the terminal device changes, the MBMS can be fed back to the network side device, and the network side device can re-determine the MBMS currently supported by the terminal device according to the feedback of the terminal device, and re-send the MBMS to the terminal device after determining the terminal identifier corresponding to the MBMS currently supported by the terminal device, so as to ensure that the terminal device can timely acquire the terminal identifier corresponding to the changed MBMS after the MBMS supported by the terminal device changes in transmission, so that the terminal device can accurately feed back the data receiving condition of the MBMS on the corresponding time-frequency resource, and further ensure the transmission efficiency of the MBMS.

In a second aspect, a method for transmitting a multimedia broadcast multicast service MBMS is provided, where the method includes:

sending first information to terminal equipment, wherein the first information comprises a terminal identifier of the terminal equipment corresponding to the MBMS;

and receiving feedback information sent by the terminal equipment, wherein the feedback information is sent by the terminal equipment on a time-frequency resource used for sending the feedback information, and the feedback information is used for indicating whether the terminal equipment successfully receives the MBMS data.

In this embodiment, after the network side device sends the first information to the terminal device, the terminal device may determine, based on the first information, a time-frequency resource used for sending the feedback information, and send the feedback information to the network side device on the time-frequency resource, so that the network side device can know whether the terminal device successfully receives MBMS data. Therefore, when the terminal equipment feeds back the data which are not received by the MBMS, the network side equipment can send the data of the MBMS to the terminal equipment again, the transmission efficiency of the MBMS is improved, and the service performance of the MBMS is improved. And because the terminal equipment sends the feedback information on the time-frequency resource belonging to the terminal equipment, the accuracy of the network side equipment for receiving the feedback information can be ensured.

In one possible design, after sending the first information to the terminal device, the method further includes:

sending first Downlink Control Information (DCI) to the terminal equipment, wherein the first DCI is used for scheduling data of a first Multimedia Broadcast Multicast Service (MBMS) so that the terminal equipment determines time-frequency resources for sending first feedback information according to a first corresponding relation between at least one terminal identifier of the terminal equipment and at least one time-frequency resource, the first MBMS and the first information, and the first feedback information is used for indicating whether the terminal equipment successfully receives the data of the first MBMS.

In one possible design, the method further includes:

receiving second information sent by the terminal equipment, wherein the second information is used for indicating that the MBMS supported by the terminal equipment changes;

determining an updated MBMS supported by the terminal equipment;

and sending third information to the terminal equipment, wherein the third information comprises the updated terminal identification corresponding to the MBMS.

In the embodiment of the application, after the MBMS supported by the terminal device changes, feedback can be performed to the network side device, and the network side device can re-determine the MBMS currently supported by the terminal device according to the feedback of the terminal device, and re-send the MBMS to the terminal device after determining the terminal identifier corresponding to the MBMS currently supported by the terminal device, so as to ensure that the terminal device can timely acquire the terminal identifier corresponding to the changed MBMS after the transmission change of the MBMS supported by the terminal device, so that the terminal device can accurately feed back the data receiving condition of the MBMS on the corresponding time-frequency resource, and further ensure the transmission efficiency of the MBMS.

In a third aspect, a terminal device is provided, where the terminal device includes:

a receiving module, configured to receive first information sent by a network side device, where the first information includes a terminal identifier of a terminal device corresponding to an MBMS;

a determining module, configured to determine, according to the first information, a time-frequency resource used by the terminal device to send feedback information, where the feedback information is used to indicate whether the terminal device successfully receives the MBMS data;

and the sending module is used for sending the feedback information to the network side equipment on the time frequency resource.

In one possible design, the first information is carried in radio resource control, RRC, signaling or medium access control, MAC, CE, signaling or downlink control information, DCI.

In one possible design, the receiving module is further configured to:

receiving first Downlink Control Information (DCI) sent by the network side equipment, wherein the first DCI is used for scheduling data of a first MBMS;

the determination module is further configured to: and determining a time-frequency resource for sending first feedback information according to a first corresponding relation between at least one terminal identifier of the terminal equipment and at least one time-frequency resource, the first MBMS and the first information, wherein the first feedback information is used for indicating whether the terminal equipment successfully receives the data of the first MBMS.

In a possible design, the first corresponding relationship is pre-stored by the terminal device, or the first corresponding relationship is carried in the first DCI.

In one possible design, the first information indicates the second correspondence through an identification order of at least one terminal identifier of the terminal device.

In one possible design, the sending module is further configured to:

the receiving module is further configured to: and receiving third information sent by the network side equipment, wherein the third information comprises a terminal identifier corresponding to the updated MBMS.

In a fourth aspect, a network-side device is provided, where the device includes:

a sending module, configured to send first information to a terminal device, where the first information includes a terminal identifier of the terminal device corresponding to an MBMS;

a receiving module, configured to receive feedback information sent by the terminal device, where the feedback information is sent by the terminal device on a time-frequency resource used for sending the feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the MBMS data.

In one possible design, the sending module is further configured to:

after first information is sent to the terminal device, first downlink control information DCI is sent, where the first DCI is used to schedule data of a first MBMS, so that the terminal device may determine, according to a first correspondence between at least one terminal identifier of the terminal device and at least one time-frequency resource, the first MBMS and the first information, the time-frequency resource used to send first feedback information, where the first feedback information is used to indicate whether to successfully receive the data of the first MBMS.

In a possible design, the first information includes or indicates a second correspondence, and the second correspondence is a correspondence between at least one terminal identifier of the terminal device and at least one MBMS session identifier.

In one possible design, the receiving module is further configured to:

the apparatus further comprises a determination module to:

determining an updated MBMS supported by the terminal equipment;

the sending module is further configured to: and sending third information to the terminal equipment, wherein the third information comprises the terminal identification corresponding to the updated MBMS.

In a fifth aspect, a computing device is provided, the computing device comprising:

at least one processor, and

a memory communicatively coupled to the at least one processor;

wherein the memory stores instructions executable by the at least one processor, the at least one processor implementing the method as described in the first or second aspect and any possible embodiment by executing the instructions stored by the memory.

A sixth aspect provides a computer readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method as described in the first or second aspect and any possible embodiment.

In a seventh aspect, a computer program product containing instructions is provided, which when run on a computer causes the computer to execute the transmission method of the multimedia broadcast multicast service MBMS described in the above various possible implementations.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a diagram illustrating a transmission method of a multimedia broadcast multicast service MBMS in the related art;

fig. 2 is a schematic diagram of an application scenario provided in an embodiment of the present application;

fig. 3 is a schematic flowchart of a transmission method of a multimedia broadcast multicast service MBMS according to an embodiment of the present application;

fig. 4 is a block diagram of a terminal device according to an embodiment of the present disclosure;

fig. 5 is a block diagram of a network-side device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a computing device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. In the present application, the embodiments and features of the embodiments may be arbitrarily combined with each other without conflict. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

The terms "first" and "second" in the description and claims of the present application and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the term "comprises" and any variations thereof, which are intended to cover non-exclusive protection. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. The "plurality" in the present application may mean at least two, for example, two, three or more, and the embodiments of the present application are not limited.

In addition, the term "and/or" herein is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

In the related art, as shown in fig. 1, when a certain MBMS service is about to start a session, a Core Network (Core Network, CN) sends a session start request of the MBMS to a logic Entity (MCE), the MCE responds to the MBMS session start request and determines to use a Single Cell Point to Multipoint (SC ptm) to carry the MBMS, the MCE sends the session start request of the MBMS to an evolved Node B (eNB), and the eNB responds to the MBMS session request sent by the MCE and triggers the SC ptm to send MBMS user data to a user terminal. However, it may happen that the user terminal cannot ensure that the data can be successfully received when the MBMS user data is sent to the user terminal through the SC ptm, so that the transmission efficiency of the MBMS is low, and the performance of the MBMS service is low, so that the high performance requirement of the 5G NR on the MBMS service cannot be met.

In view of this, the present application provides a method for transmitting a multimedia broadcast multicast service MBMS, by which a terminal may determine a time-frequency resource used for transmitting feedback information according to first information transmitted by a network side device, and transmit the feedback information to the network side device on the time-frequency resource, so that the network side device may determine whether the terminal successfully receives MBMS data based on the feedback information of the terminal, and if the terminal does not successfully receive the MBMS data, the network side may retransmit the MBMS data to the terminal, thereby improving the transmission efficiency of the MBMS and further improving the performance of the MBMS.

In order to facilitate understanding of the technical solutions provided in the embodiments of the present application, some brief descriptions are provided below for application scenarios used in the technical solutions provided in the embodiments of the present application, and it should be noted that the application scenarios described below are only used for illustrating the embodiments of the present invention and are not limited. In specific implementation, the technical scheme provided by the embodiment of the application can be flexibly applied according to actual needs.

Please refer to fig. 2, where fig. 2 is an application scenario to which the technical solution of the embodiment of the present application can be applied. In the application scenario shown in fig. 2, the terminal device 20 and the network-side device 21 are included, where the terminal device 10 may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, and so on. The network side device 11 may be an access network device, a core network device, and the like, and the access network device may be a commonly used Base station, for example, an evolved Node Base station (eNB), and may also be a network side device in a 5G system (for example, a next generation Base station (gNB), a Transmission and Reception Point (Transmission and Reception Point), or a cell, and the like.

When the terminal device 20 receives the first information sent by the network-side device 21, the time-frequency resource for sending the feedback information may be determined according to the first information, and the feedback information is sent to the network-side device 21 on the determined time-frequency resource to inform the network-side device 21 whether the terminal device 20 receives the MBMS data successfully, so that the network-side device 21 can know the specific receiving condition of the terminal device 20 for receiving the MBMS data, and when the terminal device 20 does not receive the MBMS data successfully, the network-side device 21 may send the MBMS data to the terminal device 20 again, thereby improving the transmission efficiency of the MBMS and further improving the service performance of the MBMS.

To further illustrate the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description. Although the embodiments of the present application provide method operation steps as shown in the following embodiments or figures, more or fewer operation steps may be included in the methods based on conventional or non-inventive efforts. In steps where no necessary causal relationship exists logically, the order of execution of these steps is not limited to the order of execution provided by the embodiments of the present application. The method can be executed in sequence or in parallel according to the method shown in the embodiment or the figure when the method is executed in an actual processing procedure or a device.

Referring to fig. 3, fig. 3 is a transmission method of a multimedia broadcast multicast service MBMS according to an embodiment of the present invention. The flow of the transmission method of the MBMS in fig. 3 is described as follows:

step 301: the network side equipment sends first information to the terminal equipment, wherein the first information comprises a terminal identification corresponding to the MBMS supported by the terminal equipment.

In a possible implementation manner, before sending the first information to the terminal device, the network-side device needs to determine specific content of the first information, where the first information includes terminal identifiers corresponding to the MBMS, so that it needs to determine which MBMS supported by the terminal device, and then configure the terminal identifiers corresponding to the MBMS for the terminal device. In a specific implementation process, the network side device may initiate counting statistics or notify the terminal device to perform interest reporting to determine the MBMS that the terminal device is interested in receiving or that the terminal device supports, then configure corresponding terminal identifiers for the MBMS, and send the configuration result to the terminal device in the form of the first information. It should be noted that the terminal identifier included in the first information may be all terminal identifiers corresponding to all MBMS associated with the terminal device, or may be a part of terminal identifiers corresponding to a part of MBMS associated with the terminal device, which is not limited herein.

It should be noted that the terminal identifier may be a corresponding unique identifier configured for each MBMS, or may also be an index value configured for each MBMS, or may also be other flag information that can be used for distinguishing, which is not limited in this embodiment of the application.

In a possible implementation manner, the first information may include a correspondence between at least one terminal identifier of the terminal device and at least one MBMS session identifier, and for convenience of distinguishing, the correspondence may be marked as a second correspondence. That is to say, when configuring a terminal identifier corresponding to each MBMS, the network side device corresponds the session identifier of each MBMS to one terminal identifier, then generates a second corresponding relationship between the two terminal identifiers, and sends the second corresponding relationship to the terminal device as the first information.

The second correspondence may be stored in the form of a table or a descriptive document. For example, the second corresponding relationship may be as shown in table 1, where table 1 includes two parameters, which are a terminal identifier and an MBMS session identifier, respectively, and in a specific implementation process, the identifier and the identifier number of the terminal, and the identifier number of the MBMS session may be set according to an actual situation, which is not limited herein. Each entry in table 1 may be considered a correspondence.

TABLE 1

Terminal identification	MBMS session identification
		Identification 1	Identification A
Identification 2	Identification B
		……	……

Of course, the second corresponding relationship may also be in other expression forms, which are not illustrated herein, and the expression form of the corresponding relationship is not limited in this embodiment of the application.

In another possible embodiment, the first information may indicate the second correspondence, that is, the second correspondence is not directly included in the first information, but the terminal device is notified of the second correspondence by other means. For example, the second information includes only terminal identifiers, and the terminals may be arranged in a specific order, for example, the specific order may be referred to as a first order, and the first order corresponds to at least one MBMS session identifier one to one, so that the terminals may determine, according to the arrangement order of the terminal identifiers, which MBMS the terminal identifiers in each order correspond to, respectively, so that after the terminal device successfully parses the first information to obtain the terminal identifiers arranged in the first order, when a certain MBMS is received, the terminal identifier corresponding to the MBMS may be determined according to the first order.

In a specific implementation process, the first sequence may be a terminal identifier sequence corresponding to when the terminal device reports an MBMS of interest to the network side device, for example, whether the terminal device is interested in the MBMS or MBMS1, MBMS2, and MBMS3, when the terminal reports the MBMS of interest, the terminal reports MBMS3 first, then reports MBMS2, and finally reports MBMS1, so that when the network side sends the terminal identifier, the terminal identifier 3 corresponding to the MBMS3 may be arranged at the first position, the terminal identifier 2 corresponding to the MBMS2 may be arranged at the second position, and the terminal identifier 1 corresponding to the MBMS1 may be arranged at the last.

Or the first order may also be a receiving order when the terminal device receives various MBMS in a certain period, for example, in one week, the terminal device receives MBMS2 on monday, MBMS1 on wednesday, and MBMS3 on saturday, so that when sorting the terminal identifiers, the terminal identifier 2 corresponding to MBMS2 may be arranged at the first position, the terminal identifier 1 corresponding to MBMS1 may be arranged at the second position, and the terminal identifier 3 corresponding to MBMS3 may be arranged at the last position. In a specific implementation process, the terminal identifiers may also be arranged in other manners, which is not limited herein.

In a possible embodiment, when the network side device transmits the first Information to the terminal device, different transmission manners may be adopted, for example, the first Information may be transmitted through Radio Resource Control (RRC) signaling, or Media Access Control Element MAC CE (MAC CE) signaling, or may be transmitted through Downlink Control Information (DCI), or may be some other transmission manners capable of transmitting the first Information, and the specific transmission manner for transmitting the first Information by the network side is also not limited in this embodiment.

Step 302: the terminal equipment receives first information sent by the network side equipment.

After the terminal device successfully analyzes and receives the first information, the terminal device can acquire the specific identification information of the terminal identification corresponding to the MBMS supported by the terminal device.

Step 303: and the terminal equipment determines the time-frequency resource used for sending feedback information by the terminal equipment according to the first information, wherein the feedback information is used for indicating whether the terminal equipment successfully receives the MBMS data.

After determining the time-frequency resource for sending the feedback information, the terminal device may send the feedback information on the time-frequency resource, where the feedback information may be, for example, ACK/NACK, the time-frequency resource may be, for example, a Physical Uplink Control Channel (PUCCH) time-frequency resource, or a PMFCH Channel time-frequency resource of a dedicated feedback Channel of an MBMS, and these resources may be arranged in order according to a time domain or a frequency domain, and may allocate a sequence number to each resource, where the sequence number may correspond to a terminal identifier one to one. It should be noted that, the feedback Information may also include other related Information, such as Channel State Information (CSI), and is not limited herein.

In a specific implementation process, before the terminal device receives data of a certain MBMS, the network side device needs to notify the terminal device of a resource to be used when receiving the data, that is, where the terminal device receives the data. For example, if the data of the MBMS to be received by the current terminal device is the data of the first MBMS, the network side device needs to first send DCI corresponding to the first MBMS to the terminal device, for example, the DCI may be referred to as a first DCI, where the first DCI is data used to schedule the first MBMS, and after the terminal device successfully parses the first DCI, it may be determined that the MBMS to be received currently is the first MBMS, and it may be determined where to receive the first MBMS data.

It should be noted that the first DCI may be the same DCI as the DCI carrying the first information, or may be different, which is not limited herein.

In a possible implementation manner, when determining the time-frequency resource for the feedback information, the determination may be performed through a correspondence between the terminal identifier and the time-frequency resource, and for convenience of distinction, for example, the correspondence may be marked as a first correspondence. The first correspondence relationship may be a one-to-one relationship, or may be a one-to-many or many-to-one relationship, and the first correspondence relationship is described as a one-to-one relationship in the following without limitation.

If the terminal device determines the time-frequency resource through the first correspondence, it needs to determine a terminal identifier first, and after receiving the first DCI, it can determine that the current data to be received is the data of the first MBMS, and then it can determine the terminal identifier corresponding to the first MBMS according to the correspondence between the session identifier of the MBMS and the terminal identifier. It should be noted that, for the correspondence between the session identifier and the terminal identifier of the MBMS, reference may be made to the foregoing related description, and details are not repeated here.

In a possible implementation manner, the first corresponding relationship may be pre-stored by the terminal device, or may be that the terminal device stores the corresponding relationship between each terminal identifier and the time-frequency resource after obtaining the terminal identifier, and directly invokes the corresponding relationship stored in the terminal device when the time-frequency resource needs to be determined through the pair of relationships.

In another possible implementation, the first corresponding relationship may also be carried in the first DCI, that is, the network side device adds the first corresponding relationship to the first DCI for transmission, so that after analyzing the first DCI, the terminal device can acquire the data of the first MBMS that needs to be currently received, know where to receive the data, and acquire the corresponding relationship between the terminal identifier and the time-frequency resource.

In another possible implementation, the first corresponding relationship may be needed at the terminal, and the network side device sends a piece of special information to the terminal, where the special information is specially used for indicating the first corresponding relationship, so that the terminal may determine the time-frequency resource corresponding to the terminal identifier according to the first corresponding relationship. In a specific implementation process, the terminal may also obtain the first corresponding relationship by some other methods, which is not limited in the embodiment of the present application. It should be noted that, when the network side device sends the first corresponding relationship, the network side device may directly send the first corresponding relationship to the terminal device, or may send the corresponding relationships between the terminal identifiers of all the terminal devices and the time-frequency resource to the terminal device, and then the terminal device determines the first corresponding relationship related to the terminal device from all the corresponding relationships, which is not limited herein.

Step 304: and the terminal equipment sends feedback information to the network side equipment on the time-frequency resource.

Step 305: and the network side equipment receives the feedback information sent by the terminal equipment.

After receiving the feedback information sent by the terminal device, the network side device may resend the MBMS data to the terminal if it is determined that the terminal did not successfully receive the MBMS data, and if the terminal has successfully received the MBMS data, the network side device does not need to resend the data.

In a possible implementation manner, the MBMS that the terminal device is interested in may change, that is, the MBMS supported by the terminal changes, and after the MBMS supported by the terminal changes, the network side device needs to re-configure the terminal identifier for the MBMS supported by the terminal device, and then send the terminal identifier to the terminal.

After the supported MBMS changes, the terminal may send information for indicating that the supported MBMS changes to the network side device, for example, the information may be referred to as second information, and after the network side device receives the second information, it may know that the MBMS currently supported by the terminal changes, and then the network side device may redetermine the MBMS supported by the terminal, where a specific determination method may refer to the foregoing related description, and is not described herein again. For convenience of distinguishing, the re-determined MBMS may be referred to as an updated MBMS, and after the updated MBMS is determined, the network side device may reconfigure a terminal identifier corresponding to each MBMS in the updated MBMS, and then send the determined terminal identifier to the terminal device, for example, send the updated terminal identifier corresponding to the MBMS to the terminal device in a form of sending third information, where the third information may be understood as the same as the first information, and is not described herein again.

In a possible implementation process, a terminal device connected to a network-side device may be changed, for example, at the current time, the terminal device connected to the network-side device is the terminal 1, and after a certain time, it is possible that the terminal 2 enters a service range of the network-side device, and then the network-side device needs to send corresponding first information to the terminal 2.

In this embodiment of the application, the terminal device may determine, based on the first information sent by the network-side device, a time-frequency resource used for sending the feedback information, and send the feedback information to the network-side device on the time-frequency resource, so that the network-side device can know whether the terminal device successfully receives the data of the MBMS, and thus, when the terminal device feeds back the data of the MBMS that is not received, the network-side device may send the data of the MBMS to the terminal device again, thereby providing the transmission efficiency of the MBMS and improving the service performance of the MBMS.

Based on the same inventive concept, the embodiment of the application provides terminal equipment. For specific implementation of the terminal device, reference may be made to the description of the method embodiment, and repeated details are not repeated, as shown in fig. 4, the terminal device includes a receiving module 401, a determining module 402, and a sending module 403. Wherein:

a receiving module 401, configured to receive first information sent by a network side device, where the first information includes a terminal identifier of a terminal device corresponding to an MBMS;

a determining module 402, configured to determine, according to the first information, a time-frequency resource used by the terminal device to send feedback information, where the feedback information is used to indicate whether the terminal device successfully receives MBMS data;

a sending module 403, configured to send feedback information to the network side device on the time-frequency resource.

In one possible implementation, the first information is carried in radio resource control, RRC, signaling or medium access control, element, MAC, CE, signaling or downlink control information, DCI.

In a possible implementation, the receiving module 401 is further configured to:

receiving first downlink control information DCI sent by network side equipment, wherein the first DCI is used for scheduling data of a first MBMS;

the determining module 402 is further configured to: according to a first corresponding relation between at least one terminal identifier of a terminal device and at least one time-frequency resource, a first MBMS and first information, the time-frequency resource used for sending first feedback information is determined, and the first feedback information is used for indicating whether the terminal device successfully receives data of the first MBMS.

In a possible embodiment, the first correspondence is pre-stored by the terminal device, or the first correspondence is carried in the first DCI.

In a possible embodiment, the first information comprises or indicates a second correspondence, which is a correspondence between at least one terminal identity of the terminal device and at least one MBMS session identity.

In a possible embodiment, the first information indicates the second correspondence by an identification order of at least one terminal identifier of the terminal device.

In a possible implementation, the sending module 403 is further configured to:

the receiving module 401 is further configured to: and receiving third information sent by the network side equipment, wherein the third information comprises a terminal identifier corresponding to the updated MBMS.

Based on the same inventive concept, embodiments of the present application provide a network device, where specific implementation of the network device may refer to description of the method embodiment, and repeated details are not repeated, as shown in fig. 5, where the network device includes: a sending module 501, a receiving module 502 and a determining module 503. Wherein:

a sending module 501, configured to send first information to a terminal device, where the first information includes a terminal identifier of the terminal device corresponding to an MBMS;

a receiving module 502, configured to receive feedback information sent by a terminal device, where the feedback information is sent by the terminal device on a time-frequency resource used for sending the feedback information, and the feedback information is used to indicate whether the terminal device successfully receives MBMS data.

In a possible implementation, the sending module 501 is further configured to:

after first information is sent to the terminal device, first downlink control information DCI is sent, where the first DCI is used to schedule data of a first MBMS, so that the terminal device may determine, according to a first correspondence between at least one terminal identifier of the terminal device and at least one time-frequency resource, the first MBMS and the first information, a time-frequency resource used to send first feedback information, where the first feedback information is used to indicate whether to successfully receive the data of the first MBMS.

In a possible implementation, the first correspondence is pre-stored by the terminal device, or the first correspondence is carried in the first DCI.

In a possible implementation, the receiving module 502 is further configured to:

the network side device in this embodiment of the present application further includes a determining module 503, configured to:

determining an updated MBMS supported by terminal equipment;

the sending module 501 is further configured to: and sending third information to the terminal equipment, wherein the third information comprises the updated terminal identification corresponding to the MBMS.

The division of the modules in the embodiments of the present application is schematic, and only one logical function division is provided, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

Based on the same inventive concept, an embodiment of the present application provides a computing device, please refer to fig. 6, where the computing device includes at least one processor 601 and a memory 602 connected to the at least one processor, and a specific connection medium between the processor 601 and the memory 602 is not limited in the embodiment of the present application, in fig. 6, the processor 601 and the memory 602 are connected through a bus 600 as an example, the bus 600 is shown by a thick line in fig. 6, and a connection manner between other components is merely for schematic illustration and is not limited by the present application. The bus 600 may be divided into an address bus, a data bus, a control bus, etc., and is shown with only one thick line in fig. 6 for ease of illustration, but does not represent only one bus or type of bus.

The computing device in the embodiments of the present application may further include a communication interface 603, where the communication interface 603 is, for example, a network port, and the computing device may receive data or transmit data through the communication interface 603.

In this embodiment, the memory 602 stores instructions executable by the at least one processor 601, and the at least one processor 601 may execute the steps included in the foregoing transmission method for the MBMS service by executing the instructions stored in the memory 602.

The processor 601 is a control center of the computing device, and may connect various parts of the entire device by using various interfaces and lines, and perform various functions of the computing device and process data by operating or executing instructions stored in the memory 602 and calling data stored in the memory 602, thereby performing overall monitoring of the computing device. Alternatively, the processor 601 may include one or more processing units, and the processor 601 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, an application program, and the like, and the modem processor mainly processes wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 601. In some embodiments, processor 601 and memory 602 may be implemented on the same chip, or in some embodiments, they may be implemented separately on separate chips.

The processor 601 may be a general-purpose processor, such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like, that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the transmission method for the MBMS service disclosed in the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

The memory 602, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The Memory 602 may include at least one type of storage medium, which may include, for example, a flash Memory, a hard disk, a multimedia card, a card-type Memory, a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Programmable Read Only Memory (PROM), a Read Only Memory (ROM), a charged Erasable Programmable Read Only Memory (EEPROM), a magnetic Memory, a magnetic disk, an optical disk, and the like. The memory 602 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 602 in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

By programming the processor 601, the codes corresponding to the transmission method of the multimedia broadcast multicast service MBMS described in the foregoing embodiment may be solidified in the chip, so that the chip can execute the steps of the transmission method of the multimedia broadcast multicast service MBMS when running.

Based on the same inventive concept, the present application further provides a storage medium, where the storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the steps of the transmission method for the MBMS service in the foregoing multimedia broadcast multicast service.

In some possible embodiments, the aspects of the transmission method of the multimedia broadcast multicast service MBMS provided in this application may also be implemented in the form of a program product, which includes program code for causing an intelligent device to execute the steps in the transmission method of the multimedia broadcast multicast service MBMS according to various exemplary embodiments of this application described above in this specification, when the program product runs on a main control device.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A transmission method of Multimedia Broadcast Multicast Service (MBMS) is applied to terminal equipment, and is characterized in that the method comprises the following steps:

receiving first information and Downlink Control Information (DCI) sent by network side equipment, wherein the first information comprises a terminal identifier corresponding to an MBMS supported by the terminal equipment, and the DCI is used for scheduling data of the MBMS;

determining time-frequency resources used by the terminal equipment for sending feedback information according to the first information and a first corresponding relationship, where the first corresponding relationship is a corresponding relationship between at least one terminal identifier of the terminal equipment and at least one time-frequency resource, the first corresponding relationship is pre-stored by the terminal equipment, or the first corresponding relationship is carried in the DCI, and the feedback information is used to indicate whether the terminal equipment successfully receives the data of the MBMS;

2. The method of claim 1, wherein the first information is carried in Radio Resource Control (RRC) signaling or medium access control (MAC CE) signaling or Downlink Control Information (DCI).

3. The method of claim 1, wherein the first information comprises or indicates a second correspondence, the second correspondence being a correspondence between at least one terminal identity of the terminal device and at least one MBMS session identity.

4. The method of claim 3, wherein the first information indicates the second correspondence by an identification order of at least one terminal identification of the terminal device.

5. The method of any of claims 1-4, wherein the method further comprises:

6. A transmission method of Multimedia Broadcast Multicast Service (MBMS) is applied to network side equipment, and is characterized in that the method comprises the following steps:

sending first information and Downlink Control Information (DCI) to a terminal device, where the first information includes a terminal identifier corresponding to an MBMS supported by the terminal device, and the DCI is used to schedule data of the MBMS, so that the terminal device determines a time-frequency resource used to send feedback information according to a first correspondence between at least one terminal identifier of the terminal device and at least one time-frequency resource, where the MBMS and the first information are used to indicate whether the terminal device successfully receives the data of the MBMS, and the first correspondence is pre-stored by the terminal device or is carried in the DCI;

and receiving the feedback information sent by the terminal equipment.

7. The method of claim 6, wherein the first information is carried in Radio Resource Control (RRC) signaling or Medium Access Control (MAC) Control Element (CE) signaling or Downlink Control Information (DCI).

8. The method of claim 6, wherein the first information comprises or indicates a second correspondence, the second correspondence being a correspondence between at least one terminal identity of the terminal device and at least one MBMS session identity.

9. The method of claim 8, wherein the first information indicates the second correspondence by an identification order of at least one terminal identity of the terminal device.

10. The method of any of claims 6-9, further comprising:

determining an updated MBMS supported by the terminal equipment;

and sending third information to the terminal equipment, wherein the third information comprises the terminal identification corresponding to the updated MBMS.

11. A terminal device, characterized in that the device comprises:

a receiving module, configured to receive first information and downlink control information DCI sent by a network side device, where the first information includes a terminal identifier corresponding to an MBMS supported by the terminal device, and the DCI is used to schedule data of the MBMS;

a determining module, configured to determine, according to the first information and a first correspondence, a time-frequency resource used by the terminal device for sending feedback information, where the first correspondence is a correspondence between at least one terminal identifier of the terminal device and at least one time-frequency resource, where the first correspondence is pre-stored by the terminal device, or the first correspondence is carried in the DCI, and the feedback information is used to indicate whether the terminal device successfully receives the MBMS data;

12. The apparatus of claim 11, wherein the first information is carried in Radio Resource Control (RRC) signaling or medium access control (MAC CE) signaling or Downlink Control Information (DCI).

13. The apparatus of claim 11, wherein the first information comprises or indicates a second correspondence between at least one terminal identity of the terminal device and at least one MBMS session identity.

14. The apparatus of claim 13, wherein the first information indicates the second correspondence by an identification order of at least one terminal identification of the terminal device.

15. The device of any of claims 11-14, wherein the sending module is further to:

16. A network-side device, the device comprising:

a sending module, configured to send first information and downlink control information DCI to a terminal device, where the first information includes a terminal identifier corresponding to an MBMS supported by the terminal device, and the DCI is used to schedule data of the MBMS, so that the terminal device determines, according to a first correspondence between at least one terminal identifier of the terminal device and at least one time-frequency resource, the MBMS and the first information, the time-frequency resource used to send feedback information, where the feedback information is used to indicate whether the terminal device successfully receives data of the MBMS, and the first correspondence is pre-stored by the terminal device or is carried in the DCI;

and the receiving module is used for receiving the feedback information sent by the terminal equipment.

17. The apparatus of claim 16, wherein the first information is carried in Radio Resource Control (RRC) signaling or medium access control (MAC CE) signaling or Downlink Control Information (DCI).

18. The apparatus of claim 16, wherein the first information comprises or indicates a second correspondence, the second correspondence being a correspondence between at least one terminal identity of the terminal device and at least one MBMS session identity.

19. The apparatus of claim 18, wherein the first information indicates the second correspondence by an identification order of at least one terminal identification of the terminal device.

20. The device of any of claims 16-19, wherein the receiving module is further to:

the apparatus further comprises a determination module to:

determining an updated MBMS supported by the terminal equipment;

the sending module is further configured to: and sending third information to the terminal equipment, wherein the third information comprises the updated terminal identification corresponding to the MBMS.

21. A computing device, wherein the computing device comprises:

at least one processor, and

a memory communicatively coupled to the at least one processor;

wherein the memory stores instructions executable by the at least one processor, the at least one processor implementing the method of any one of claims 1-5 or claims 6-10 by executing the instructions stored by the memory.

22. A computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1-5 or claims 6-10.