Broadcast method and apparatus of mbms service, storage medium, base station, terminal

Abstract

A broadcast method and device of an MBMS service, a storage medium, a base station and a terminal, the method comprising: broadcasting inquiry information of one or more MBMS services, wherein the inquiry information is used to inquire whether the one or more MBMS services are demand MBMS services respectively, and / or is used to inquire a demand for transmission parameters of the demand MBMS services; receiving feedback information of one or more UEs for the inquiry information; and determining MBMS services to be broadcast and transmission parameters of the MBMS services based on the feedback information. The application can improve transmission efficiency and reduce waste of wireless resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, and in particular to a broadcast method and device of an MBMS service, a storage medium, a base station and a terminal. BACKGROUND

[0002] In the 5G New Radio (NR) technology, because high frequency deployment will be used, the wireless signal at high frequency has the characteristics of good directivity and large path loss. A large cell needs multiple beams to achieve complete coverage, and one beam can only cover a limited range. A small cell can only contain one beam. For a cell composed of multiple beams, due to hardware limitations, not all beams can transmit at the same time, and time-division transmission is required, which is called beam sweeping.

[0003] For a cell in NR, the transmission of synchronization signals (including primary synchronization signals and secondary synchronization signals) is transmitted within 5 ms according to a certain period such as 20 ms / 40 ms / 80 ms. A cell transmits one or more synchronization signal blocks (SS blocks) (i.e., different beams), such as 4 SS blocks or 8 SS blocks. An SS block includes primary synchronization signals (PSS) / secondary synchronization signals (SSS) and a physical broadcast channel (PBCH). PSS and SSS are used to identify the cell identity and to obtain symbol-level synchronization for the user terminal (UE). When the UE evaluates the signal quality of a cell, it needs to combine the strongest N beams of the cell to obtain the signal quality of the cell. The value of N can be configured by the network, and N >= 1.

[0004] In NR, the multimedia broadcast multicast service (MBMS) function is introduced. Specifically, the single-cell point-to-multipoint (SC-PTM) mechanism can be used, that is, each cell independently schedules the transmission of multicast services.

[0005] In Long Term Evolution (LTE) technology, the transmission mechanism of SC-PTM provides a list of all MBMS services transmitted on a Single Cell Multicast Transport Channel (SC-MTCH) for a Single Cell Multicast Control Channel (SC-MCCH), including a Temporary Mobile Group Identity (TMGI) of each MBMS service, a Session Identity, a Group Radio Network Temporary Identity (G-RNTI), and scheduling information.

[0006] Specifically, the SC-MCCH can be transmitted by Radio Resource Control (RRC) in each SC-MCCH repetition period, and a modification period can be used for the SC-MCCH, the SC-MCCH is transmitted multiple times in one modification period, and a UE can obtain a G-RNTI of an MBMS service of interest through the SC-MCCH, and then detects Downlink Control Information (DCI) scrambled by the RNTI in a corresponding subframe according to the scheduling information, and further obtains multicast data transmitted on a downlink shared channel.

[0007] However, in NR, using the existing MBMS broadcast technology, transmitting MBMS services in each beam will result in low transmission efficiency and serious waste of wireless resources.

[0008] Therefore, there is an urgent need for a MBMS service broadcast method that can improve transmission efficiency and reduce waste of wireless resources. SUMMARY

[0009] The technical problem solved by the present application is to provide a MBMS service broadcast method and device, storage medium, base station, and terminal, which can improve transmission efficiency and reduce waste of wireless resources.

[0010] To solve the above technical problem, the present application provides a MBMS service broadcast method, including the following steps: broadcasting inquiry information of one or more MBMS services, wherein the inquiry information is used to inquire whether the one or more MBMS services are demand MBMS services, and / or is used to inquire the demand for transmission parameters of the demand MBMS services; receiving feedback information of one or more UEs for the inquiry information; and determining the MBMS service to be broadcast and its transmission parameters based on the feedback information.

[0011] Optionally, the inquiry information comprises whether the one or more MBMS services are respectively demanded MBMS services, and the feedback information comprises identification information of the demanded MBMS services; and determining the MBMS services to be broadcast and the transmission parameters of the MBMS services based on the feedback information comprises: determining whether each MBMS service is a demanded MBMS service based on the identification information of the demanded MBMS services; and broadcasting at least the demanded MBMS services for which there is a demand from a UE.

[0012] Optionally, the transmission parameters comprise one or more beams capable of being used to receive each demanded MBMS service, and the feedback information further comprises a transmission beam identification for requesting to receive the demanded MBMS service; and determining the MBMS services to be broadcast and the transmission parameters of the MBMS services based on the feedback information further comprises: determining a transmission beam of the demanded MBMS service; and broadcasting the demanded MBMS service on the determined transmission beam.

[0013] Optionally, the transmission parameters further comprise a modulation and coding scheme for receiving data of the MBMS service; and determining the MBMS services to be broadcast and the transmission parameters of the MBMS services based on the feedback information further comprises: determining a modulation and coding scheme suitable for each MBMS service on a beam for transmitting the MBMS service.

[0014] Optionally, the inquiry information comprises one or more levels of channel quality parameter thresholds, and the feedback information further comprises an indicator of a highest level of channel quality parameter threshold and a corresponding demanded transmission beam.

[0015] Optionally, the feedback information further comprises a modulation and coding scheme suitable for the UE.

[0016] Optionally, the UE is located in a serving cell, and the transmission parameters further comprise a modulation and coding scheme for receiving data of the MBMS service; and determining the MBMS services to be broadcast and the transmission parameters of the MBMS services based on the feedback information further comprises: determining a modulation and coding scheme suitable for each MBMS service to be broadcast.

[0017] Optionally, the inquiry information further comprises configuration information of available time slots of a random access preamble for the UE to send the feedback information; and the receiving of the feedback information of the one or more UEs in response to the inquiry information comprises: receiving a random access preamble sent by the UE in the available time slots, and receiving feedback information reported by the UE on a MSG3 or a MSGA.

[0018] Optionally, the method further comprises: broadcasting the transmission parameters of the MBMS services to be broadcast; and broadcasting the data of the MBMS services to be broadcast, so that each UE receives the required MBMS service based on the transmission parameters of the MBMS service to be broadcast.

[0019] Optionally, the broadcasting of the transmission parameters of the MBMS services to be broadcast comprises one or more of the following: broadcasting the identification information of each MBMS service to be broadcast; broadcasting the beam information for transmitting each MBMS service to be broadcast; and broadcasting the broadcast time slot indication information of each MBMS service to be broadcast.

[0020] Optionally, the broadcasting of the beam information for transmitting each MBMS service to be broadcast comprises: for each MBMS service to be broadcast, indicating the beams or beam groups in which the MBMS service to be broadcast is transmitted by using preset bits in the MCCH; wherein each bit of the preset bits is used to indicate whether the MBMS service to be broadcast is transmitted in a beam or a beam group.

[0021] Optionally, the broadcasting of the data of the MBMS services to be broadcast comprises: transmitting the frequency domain resource indication information and the modulation and coding mechanism of the MBMS service to be broadcast by using the downlink control signaling on the transmission beam of the MBMS service to be broadcast at the time slot indicated by the broadcast time slot indication information, so that each UE receives the data of the MBMS service to be broadcast based on the frequency domain resource indication information and the modulation and coding mechanism of the MBMS service to be broadcast.

[0022] To solve the above technical problems, an embodiment of the present application provides a method for broadcasting MBMS services, comprising the following steps: receiving inquiry information of one or more MBMS services by broadcasting, wherein the inquiry information is used to inquire whether the one or more MBMS services are required MBMS services respectively, and / or is used to inquire the requirement for the transmission parameters of the required MBMS services; and sending feedback information for the inquiry information.

[0023] Optionally, the inquiry information comprises whether the one or more MBMS services are required MBMS services respectively; and the sending of the feedback information for the inquiry information comprises: if it is determined that there is a required required MBMS service in the one or more MBMS services, the feedback information sent contains the identification information of the required MBMS service.

[0024] Optionally, the inquiry information comprises inquiry of a transmission parameter of the required MBMS service, the transmission parameter comprises one or more beams capable of receiving the required MBMS service; the sending of the feedback information in response to the inquiry information further comprises: determining the transmission beam receiving the required MBMS service; and sending the determined one or more transmission beam identifiers.

[0025] Optionally, the transmission parameter further comprises a modulation and coding scheme capable of receiving data of the MBMS service; the sending of the feedback information in response to the inquiry information further comprises: determining the applicable modulation and coding scheme for the transmission beam, and sending the applicable modulation and coding scheme.

[0026] Optionally, the inquiry information comprises one or more levels of channel quality parameter thresholds; the feedback information further comprises an indicator capable of meeting the highest level of channel quality parameter threshold and a corresponding transmission beam identifier.

[0027] Optionally, the feedback information further comprises a modulation and coding scheme applicable to the UE.

[0028] Optionally, the one or more UEs are located on a serving cell, the transmission parameter further comprises a modulation and coding scheme capable of receiving data of the MBMS service; the sending of the feedback information in response to the inquiry information further comprises: sending the feedback information, the feedback information comprising the modulation and coding scheme applicable to the required MBMS service.

[0029] Optionally, the inquiry information further comprises configuration information of an available time slot of a random access preamble when the UE sends the feedback information; the sending of the feedback information in response to the inquiry information comprises: sending a random access preamble in the available time slot, and sending the feedback information through MSG3 or MSGA.

[0030] Optionally, the method of broadcasting the MBMS service further comprises: receiving, through broadcasting, a transmission parameter of a to-be-broadcast MBMS service; and receiving, through broadcasting, a required MBMS service based on the transmission parameter of the to-be-broadcast MBMS service.

[0031] Optionally, the receiving, through broadcasting, of the transmission parameter of the to-be-broadcast MBMS service comprises one or more of the following: receiving, through the broadcasting, identification information of each to-be-broadcast MBMS service, receiving beam information for transmitting each to-be-broadcast MBMS service, and receiving broadcast time slot indication information of each to-be-broadcast MBMS service.

[0032] Optionally, the receiving the beam information for transmitting each of the MBMS services to be broadcast comprises: for each of the MBMS services to be broadcast, determining in which beams to transmit according to preset bits in the MCCH; wherein each bit of the preset bits is used to indicate whether the MBMS service to be broadcast is transmitted in one beam or a beam group.

[0033] Optionally, the receiving the MBMS service required by the UE based on the transmission parameter of the MBMS service to be broadcast comprises: receiving downlink control signaling indicating the frequency domain resource indication information and the modulation and coding scheme of the MBMS service to be broadcast on the time slot indicated by the broadcast time slot indication information; and receiving data of the MBMS service to be broadcast based on the frequency domain resource indication information and the modulation and coding scheme of the MBMS service to be broadcast.

[0034] Optionally, the beams for transmitting the same MBMS service to be broadcast are multiple; and the receiving the MBMS service required by the UE further comprises: receiving the MBMS service to be broadcast by using the beam with the strongest signal in the beams for transmitting the same MBMS service to be broadcast; or receiving the MBMS service to be broadcast by randomly selecting one beam in the beams for transmitting the same MBMS service to be broadcast.

[0035] Optionally, the beams for transmitting the same MBMS service to be broadcast are multiple; and the receiving the MBMS service required by the UE further comprises: when the MBMS service to be broadcast is received by using a first beam and cannot be correctly decoded, receiving the MBMS service to be broadcast by using other beams, and then performing combined decoding on data of the MBMS service to be broadcast received twice or more times.

[0036] To solve the above technical problem, an embodiment of the present application provides a broadcast device of MBMS service, comprising: an inquiry information broadcast module, configured to broadcast inquiry information of one or more MBMS services, wherein the inquiry information is used to inquire whether the one or more MBMS services are respectively required MBMS services, and / or is used to inquire the requirement of transmission parameters of the required MBMS services; a feedback information receiving module, configured to receive feedback information of one or more UEs for the inquiry information; and a determination module, configured to determine MBMS services to be broadcast and transmission parameters of the MBMS services to be broadcast based on the feedback information.

[0037] To solve the above technical problems, the embodiment of the present application provides a broadcast device of MBMS service, comprising: an inquiry information receiving module, configured to receive inquiry information of one or more MBMS services through broadcast, wherein the inquiry information is used to inquire whether the one or more MBMS services are demand MBMS services respectively, and / or is used to inquire the demand of transmission parameters of the demand MBMS services; and a feedback information sending module, configured to send feedback information for the inquiry information, so that a base station determines MBMS services to be broadcast and transmission parameters thereof based on the feedback information.

[0038] To solve the above technical problems, the embodiment of the present application provides a storage medium, which stores a computer program, wherein the computer program is run by a processor to execute the steps of the broadcast method of MBMS service or the steps of the broadcast method of MBMS service.

[0039] To solve the above technical problems, the embodiment of the present application provides a base station, comprising a memory and a processor, wherein the memory stores a computer program capable of being run on the processor, and the processor executes the steps of the broadcast method of MBMS service when running the computer program.

[0040] To solve the above technical problems, the embodiment of the present application provides a terminal, comprising a memory and a processor, wherein the memory stores a computer program capable of being run on the processor, and the processor executes the steps of the broadcast method of MBMS service when running the computer program.

[0041] Compared with the prior art, the technical scheme of the embodiment of the present application has the following beneficial effects:

[0042] In the embodiment of the present application, by setting the step of broadcasting inquiry information by the base station, feedback information of the UE for the inquiry information can be received, so that the determined MBMS services to be broadcast and transmission parameters thereof are more in line with the demand of the UE, compared with the prior art, in which MBMS data is still broadcast in a beam without UE needing to receive the MBMS data, resulting in waste of wireless resources, and due to the fact that the cell does not adopt a high modulation and coding mechanism when broadcasting the MBMS service, the transmission efficiency is low, by adopting the scheme of the embodiment of the present application, the base station can communicate with the UE before configuring transmission parameters of the MBMS service to be broadcast, so that the transmission efficiency can be improved and the waste of wireless resources can be reduced.

[0043] Further, in the embodiment of the present application, by determining whether the one or more MBMS services are demand MBMS services through the inquiry information, and then broadcasting at least the demand MBMS service for which the UE has made a demand, only the MBMS data needed to be received by the UE can be broadcast, so that the waste of wireless resources can be effectively reduced.

[0044] Further, in the embodiment of the present application, by setting the transmission parameter in the inquiry information including one or more beams capable of being used to receive the respective required MBMS service, the transmission beam of the required MBMS service can be determined; and by broadcasting the required MBMS service on the determined transmission beam, the MBMS service can be further broadcasted only in the beam where the UE needs to receive the MBMS data, thereby effectively reducing the waste of wireless resources.

[0045] Further, if there are multiple modulation and coding mechanisms on the current required beam, the applicable modulation and coding mechanism is respectively determined on the beam where the MBMS service is transmitted, so as to improve the level of the modulation and coding mechanism as much as possible while meeting the requirement of the UE for reception, thereby improving the transmission efficiency.

[0046] Further, if the UE is located in the serving cell, the modulation and coding mechanism of the data of the MBMS service can also be received, and the applicable modulation and coding mechanism of the to-be-broadcast MBMS service is respectively determined, so as to improve the level of the modulation and coding mechanism as much as possible while meeting the requirement of the UE for reception, thereby improving the transmission efficiency.

[0047] Further, the inquiry information is further set to include the configuration information of the available time slot of the random access preamble when the UE sends the feedback information, the random access preamble sent by the UE in the available time slot can be received, and the feedback information reported by the UE on the MSG3 or MSGA can be received, so that the UE is configured to transmit the feedback information in a more appropriate time slot, thereby improving the accuracy of information transmission and the effectiveness of reception.

[0048] Further, the transmission parameter of the to-be-broadcast MBMS service is broadcasted, and then the data of the to-be-broadcast MBMS service is broadcasted, so that each UE receives the required MBMS service based on the transmission parameter of the to-be-broadcast MBMS service, thereby enabling the UE to know in which beam or beam group the required MBMS service of interest is transmitted according to the indication of the base station, and then receiving the required MBMS service in the corresponding beam according to the beam that can be received, thereby further improving the accuracy of information transmission and the effectiveness of reception. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 is a flowchart of a method for broadcasting an MBMS service in an embodiment of the present application;

[0050] Figure 2 is a partial flowchart of another method for broadcasting an MBMS service in an embodiment of the present application;

[0051] Figure 3is a flow chart of another broadcast method of the MBMS service in the embodiment of the present application;

[0052] Figure 4 is a structural schematic diagram of a broadcast device of the MBMS service in the embodiment of the present application;

[0053] Figure 5 is a structural schematic diagram of another broadcast device of the MBMS service in the embodiment of the present application. DETAILED DESCRIPTION

[0054] As described above, in the NR, the MBMS function is introduced. Specifically, the SC-PTM mechanism can be adopted, that is, the transmission of the multicast service is independently scheduled by each cell.

[0055] However, in the existing broadcast technology of the MBMS service, the transmission efficiency is low, and the wireless resources are wasted seriously.

[0056] The inventor of the present application finds through research that in the prior art, since one cell in the NR can be covered by multiple beams, if the MBMS service data is sent in all the beams in the cell, any UE in the cell can receive the MBMS service data, however, in practice, the distribution of the UEs that need to receive the MBMS can be very uneven, for example, there are UEs in some beams that need to receive the MBMS data, but there are no UEs in other beams that need to receive the MBMS data, at this time, broadcasting the MBMS data in these beams will waste valuable wireless resources. Moreover, generally, the broadcast needs to consider the receiving condition of the UEs at the edge of the cell, therefore, the cell will not adopt a very high modulation and coding mechanism when broadcasting the MBMS service, if the UEs that receive the MBMS service are all located in a good place of the cell in terms of wireless signal, the base station adopting a lower modulation and coding mechanism will result in low transmission efficiency.

[0057] In the embodiment of the present application, by setting the step of broadcasting the inquiry information by the base station, the feedback information of the receiving UE for the inquiry information can be received, so that the determined MBMS service to be broadcast and the transmission parameter thereof are more in line with the demand of the UE. Compared with the prior art, the MBMS data is still broadcast in the beam in which there is no UE that needs to receive the MBMS data, resulting in waste of wireless resources and low transmission efficiency due to the fact that the cell does not adopt a very high modulation and coding mechanism when broadcasting the MBMS service. By adopting the scheme of the embodiment of the present application, the base station can communicate with the UE before configuring the transmission parameter of the MBMS service to be broadcast, so that the transmission efficiency can be improved and the waste of wireless resources can be reduced.

[0058] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0059] Referring to Figure 1 , Figure 1 is a flowchart of a method for broadcasting an MBMS service in an embodiment of the present application. The method for broadcasting an MBMS service can be used at a base station side and can include steps S11 to S13:

[0060] Step S11: broadcasting inquiry information of one or more MBMS services, wherein the inquiry information is used to inquire whether the one or more MBMS services are respectively demand MBMS services, and / or is used to inquire a demand for transmission parameters of a demand MBMS service;

[0061] Step S12: receiving feedback information of one or more UEs for the inquiry information;

[0062] Step S13: determining an MBMS service to be broadcast and transmission parameters thereof based on the feedback information.

[0063] In a specific implementation of step S11, a single NR cell can be set to support SC-PTM, and MBMS services can be transmitted to UEs in different states such as Radio Resource Control (RRC) connected state, idle state, and inactive state within the cell.

[0064] Suppose that three MBMS services, referred to as service 1, service 2, and service 3, need to be transmitted by an NR cell in a period of time. The NR cell schedules transmission of the MBMS services a total of 6 times in a period of time such as 40 ms, and each service can be transmitted twice. The NR cell arranges time slots for each service, and then informs UEs of the time slots through SC-MCCH. The NR cell transmits a list of all MBMS services on SC-MTCH, and the list includes TMGI, service identifier, G-RNTI, and scheduling information of each MBMS service. The scheduling information can be used to indicate a time slot in which the MBMS service is scheduled, or UEs can determine a time slot in which the UE receives the MBMS service based on the scheduling information.

[0065] To implement reasonable MBMS transmission, for example, to determine a beam corresponding to a transmitted MBMS service and a corresponding modulation and coding mechanism (for example, 16QAM, 64QAM, or other modulation and coding mechanisms), the base station can set the inquiry information.

[0066] Further, the base station can set the inquiry information through a system message or through MCCH.

[0067] Further, the inquiry information can be set to include one or more contents according to specific conditions.

[0068] In an embodiment, the inquiry information can comprise identification information of one or more MBMS services, so that the UE determines at least part of the content of the MBMS service according to the identification information.

[0069] Further, the identification information can be used to uniquely determine the MBMS service.

[0070] In particular, the identification information can comprise one or more of the following: TMGI of the MBMS service, Session identification, G-RNTI, it should be noted that other suitable identification information for uniquely determining the MBMS service can also be included.

[0071] The inquiry information can also comprise a part for inquiring whether the one or more MBMS services are respectively the required MBMS service, so that the UE determines which MBMS service or services are the required MBMS service according to its own requirements.

[0072] The inquiry information can also comprise a part for inquiring the requirement of the transmission parameter of the required MBMS service, so that the UE replies with the transmission parameter suitable for itself for the required MBMS service for which it has requirements.

[0073] In an embodiment of step S12, the base station can receive feedback information of one or more UEs for the inquiry information.

[0074] It should be noted that the feedback information is in a corresponding relationship with the inquiry information, i.e. feedback for the content inquired in the inquiry information. However, the UE can not feedback for the MBMS service for which it has no requirements. The MBMS service for which the UE has requirements refers to the MBMS service in which the UE is interested or the MBMS service which the UE is receiving.

[0075] In an embodiment of the present application, the inquiry information can also comprise configuration information of available time slots of random access preambles when the UE sends the feedback information; and the receiving feedback information of one or more UEs for the inquiry information comprises receiving the random access preambles sent by the UE in the available time slots and receiving the feedback information reported by the UE through MSG3 or MSGA.

[0076] In an embodiment of the present application, the UE can be configured by the base station to send the feedback information in more suitable time slots, so as to improve the accuracy of information transmission and the effectiveness of reception.

[0077] It should be noted that the above technical solutions are applicable to the idle state or the active state, however, when the UE is in the connected state, the technical solutions in the embodiments of the present application can also be adopted. For example, when the UE is in the connected state and uplink out-of-sync, the technical solutions in the embodiments of the present application can be adopted. In the embodiments of the present application, the state of the UE can not be limited.

[0078] It can be understood that if the UE is in the connected state, the UE can report the demand MBMS service of interest to the base station through RRC signaling, and can report the beam identifier of the service cell that can be detected by the UE through the measurement report.

[0079] In the implementation of step S13, the base station can determine the MBMS service to be broadcast and the transmission parameter thereof based on the feedback information, including the demand MBMS service information of interest reported by the UE in the connected state.

[0080] Further, the inquiry information can include whether the one or more MBMS services are respectively demand MBMS services, and the feedback information includes the identifier information of the demand MBMS service; determining the MBMS service to be broadcast and the transmission parameter thereof based on the feedback information includes: determining whether each MBMS service is a demand MBMS service based on the identifier information of the demand MBMS service; and at least broadcasting the demand MBMS service for which the UE has made a demand.

[0081] In the embodiments of the present application, by determining whether the one or more MBMS services are respectively demand MBMS services through the inquiry information, and further at least broadcasting the demand MBMS service for which the UE has made a demand, only the MBMS data that needs to be received by the UE can be broadcast, thereby effectively reducing the waste of wireless resources.

[0082] Further, the transmission parameter can include one or more beams that can be used to receive the demand MBMS service, and the feedback information further includes the transmission beam identifier for receiving the demand MBMS service; determining the MBMS service to be broadcast and the transmission parameter thereof based on the feedback information further includes: determining the transmission beam of the demand MBMS service; and broadcasting the demand MBMS service on the determined transmission beam. Generally, the base station can transmit the MBMS data on the beam that can receive the demand MBMS service fed back by the UE, which can effectively improve the transmission efficiency.

[0083] For example, if there are three MBMS services, service 1, service 2 and service 3, which need to be transmitted in the NR cell, when there are UEs interested in part of the MBMS services, for example, there are some UEs interested in service 1 only, i.e., service 1 is the only required MBMS service. The base station can only broadcast service 1, and not broadcast data of other MBMS services in the beam.

[0084] In the embodiment of the present application, by setting the transmission parameter in the inquiry information to include one or more transmission beams that can be used to receive the required MBMS service, it can be determined whether there is a required MBMS service in the one or more transmission beams, and then the UE requested one or more transmission beams are used to broadcast the MBMS service required by the UE, which can further realize the broadcasting of the MBMS service only in the beam where the UE needs to receive the MBMS data, thereby effectively reducing the waste of wireless resources.

[0085] Further, the transmission parameter can further include a modulation and coding scheme for receiving the data of the MBMS service, and the determining of the MBMS service to be broadcast and the transmission parameter based on the feedback information further includes determining the applicable modulation and coding scheme in the beam for transmitting the MBMS service.

[0086] In the embodiment of the present application, if there are multiple modulation and coding schemes in the current transmission beam, the applicable modulation and coding scheme is determined in the beam for transmitting the MBMS service, which has the opportunity to improve the level of the modulation and coding scheme as much as possible while meeting the reception requirements of the UE, thereby improving the transmission efficiency, i.e., improving the spectrum efficiency.

[0087] Specifically, if multiple modulation and coding schemes are received from different UEs in the current transmission beam, the base station can directly select the modulation and coding scheme with the lowest level, and can also determine whether to use the modulation and coding scheme with the lowest level according to the proportion of the UEs selecting different modulation and coding schemes. Compared with the prior art which directly uses the modulation and coding scheme with the lowest or lower level in the current technology to meet the reception effect of the UEs at the edge of the cell without selection, the scheme of the embodiment of the present application has the opportunity to improve the level of the modulation and coding scheme when the UEs receiving the MBMS service are not at the edge of the cell, thereby improving the transmission efficiency.

[0088] Further, in one specific implementation of the embodiments of the present application, the inquiry information can include one or more levels of channel quality parameter thresholds, and the feedback information can further include an indicator of the highest level of channel quality parameter threshold satisfied and its corresponding required transmission beam identifier. The channel quality is obtained by the UE measuring the reference signal of the serving cell, and how the UE measures the reference signal of the serving cell belongs to the prior art. If the inquiry information only includes one channel quality parameter threshold, the feedback information of the UE does not need to indicate the indicator of the channel quality parameter threshold, but only needs to include the required transmission beam identifier, which can be one or more required transmission beam identifiers.

[0089] The channel quality parameter can include Reference Signal Receiving Power (RSRP) and / or Reference Signal Receiving Quality (RSRQ).

[0090] Specifically, the base station can set different channel quality parameter thresholds for corresponding modulation and coding schemes, such as a first threshold for a channel quality parameter corresponding to 64 Quadrature Amplitude Modulation (64QAM) and a second threshold for a channel quality parameter corresponding to 16QAM.

[0091] It can be understood that the higher the level of the modulation and coding scheme, the higher the channel quality parameter threshold. For example, the first threshold can be greater than the second threshold, and when the UE finds that the signal quality of the serving cell exceeds the first threshold, it has already exceeded the second threshold.

[0092] In a specific implementation, the indicator of the channel quality parameter threshold for 64QAM can be set to 1, and the indicator of the channel quality parameter threshold for 16QAM can be set to 2. If the UE only exceeds the second threshold, 2 can be fed back, and if the UE exceeds the first threshold and the second threshold, only 1 can be fed back.

[0093] In the embodiments of the present application, by setting the feedback information to further include an indicator of the highest level of channel quality parameter threshold satisfied and its corresponding required transmission beam identifier, compared with feeding back the measured value of the channel quality parameter, the signaling overhead can be effectively reduced, and compared with the UE setting the channel quality parameter threshold itself, the accuracy of the UE feedback and the consistency of the feedback of multiple UEs can be improved.

[0094] Specifically, the indicator of the channel quality parameter threshold of each level can be explicitly indicated in the query information, or can not be explicitly indicated in the query information. In a specific application of the embodiment of the present application, two threshold values can be set in the query information as needed, but the indicators of the two threshold values are not indicated. When the UE feeds back, a first preset bit value (for example, 0) can be used to identify the first threshold value, and a second preset bit value (for example, 1) can be used to identify the second threshold value. The UE can feed back the beam identifiers that exceed the first threshold value and the beam identifiers that exceed the second threshold value, so that the base station can accurately know the channel condition of the UE and can determine the transmission beam for sending the MBMS service required by the UE.

[0095] In another specific implementation of the embodiment of the present application, the feedback information can further include the modulation and coding scheme applicable to the UE.

[0096] Specifically, the UE can give a recommended modulation and coding scheme according to the channel state. For example, the UE can determine one or more modulation and coding schemes applicable to itself in a conventional manner, for example, 64QAM and 16QAM are applicable, and then reports the modulation and coding scheme through the feedback information. The UE can determine the highest modulation and coding scheme that can be accurately received by the UE according to the measured signal quality of the serving cell.

[0097] In a specific application, the UE can only report the highest modulation and coding scheme in the applicable modulation and coding schemes, that is, 64QAM is reported, and 16QAM is not reported.

[0098] In the embodiment of the present application, by setting the feedback information to further include the highest level modulation and coding scheme applicable to the UE, a suitable modulation and coding scheme can be selected according to the requirement of the UE.

[0099] In another specific implementation of the embodiment of the present application, the UE is located in the serving cell, and the transmission parameter further includes a modulation and coding scheme (that is, a recommended modulation and coding scheme of the UE) for receiving data of the MBMS service. Based on the feedback information, determining the MBMS service to be broadcast and the transmission parameter thereof further includes determining the modulation and coding scheme applicable to the MBMS service to be broadcast, respectively.

[0100] In the embodiment of the present application, if the UE is located in the serving cell, the modulation and coding scheme for receiving data of the MBMS service can also be received, and the modulation and coding scheme applicable to the MBMS service to be broadcast can be determined, respectively. The level of the modulation and coding scheme can be as high as possible while meeting the reception requirement of the UE, so as to improve the transmission efficiency.

[0101] In the embodiment of the present application, the step of broadcasting the inquiry information by the base station can receive the feedback information of the UE for the inquiry information, so that the determined MBMS service to be broadcast and the transmission parameters thereof are more in line with the needs of the UE. Compared with the prior art, the MBMS data is still broadcast in the beam where there is no UE needing to receive the MBMS data, which leads to waste of wireless resources and low transmission efficiency due to the fact that the cell does not adopt a high modulation and coding mechanism when broadcasting the MBMS service. The scheme of the embodiment of the present application can enable the base station to communicate with the UE before configuring the transmission parameters of the MBMS service to be broadcast, thereby improving the transmission efficiency and reducing the waste of wireless resources.

[0102] With reference to Figure 2 , Figure 2 is a part of the flowchart of another MBMS service broadcasting method in the embodiment of the present application. The another MBMS service broadcasting method can be used in the base station side, and can further include Figure 1 The steps S11 to S13 shown in the figure can further include steps S21 to S22:

[0103] Step S21: broadcast the transmission parameters of the MBMS service to be broadcast.

[0104] Step S22: broadcast the data of the MBMS service to be broadcast, so that each UE receives the required MBMS service based on the transmission parameters of the MBMS service to be broadcast.

[0105] In step S21, the transmission parameters of the MBMS service to be broadcast can be broadcast before the data of the MBMS service to be broadcast.

[0106] It should be noted that the MBMS service to be broadcast can include a brand-new MBMS service to be broadcast from the beginning, and can also include an MBMS service that has been broadcast for a part and is continuing to be broadcast.

[0107] Further, the step of broadcasting the transmission parameters of the MBMS service to be broadcast can include one or more of the following: broadcasting the identification information of each MBMS service to be broadcast, broadcasting the beam information for transmitting each MBMS service to be broadcast, and broadcasting the broadcast time slot indication information of each MBMS service to be broadcast.

[0108] The identification information can be used to uniquely determine the MBMS service. For example, it can include one or more of the following: TMGI of the MBMS service, service identification, G-RNTI, and it should be noted that other appropriate identification information for uniquely determining the MBMS service can also be included.

[0109] The broadcast time slot indication information can be used to indicate in which time slots the MBMS service is broadcast, or to indicate from which time slot (the starting time slot in a period) the MBMS service is broadcast, so that the UE receives the data of the to-be-broadcast MBMS service in the transmission time slot of the MBMS service of interest to the UE according to the time slot indication information, avoiding continuous monitoring of the signals transmitted by the base station, and power consumption can be effectively saved.

[0110] Further, the step of broadcasting the beam information for transmitting each to-be-broadcast MBMS service can comprise: for each to-be-broadcast MBMS service, using preset bit positions in the MCCH to indicate in which beams or beam groups to transmit; wherein each bit of the preset bit positions is used to indicate whether the to-be-broadcast MBMS service is transmitted in a beam or a beam group.

[0111] Specifically, the base station indicates the correspondence between the MBMS service transmission and the beam through the MCCH, such as for service 1, the base station can indicate in which beams to transmit the MBMS service through an 8-bit bitmap, wherein each bit in the bitmap is used to indicate whether a beam transmits or does not transmit. For example, 01000010 can be used to represent that the 2nd beam and the 7th beam transmit, or that the 2nd beam and the 7th beam do not transmit.

[0112] Further, for a cell with a number of beams exceeding a preset beam threshold, such as a cell with 64 beams, the beams can be divided into several beam groups, and then it is set whether to transmit the MBMS service in the multiple beams of the group, to reduce signaling overhead. In a single beam group, it can be set that the beams are consistent with each other, for example, all transmit or all do not transmit.

[0113] In the embodiments of the present application, by setting the preset bit positions in the MCCH to indicate in which beams or beam groups to transmit, the beams can be accurately determined using less information, improving the accuracy of the UE obtaining the beam information while reducing signaling overhead.

[0114] In the specific implementation of step S22, the step of broadcasting the data of the to-be-broadcast MBMS service can comprise: transmitting downlink control signaling indicating the frequency domain resource indication information and the modulation and coding mechanism of the to-be-broadcast MBMS service on the transmission beam of the to-be-broadcast MBMS service in the time slot indicated by the broadcast time slot indication information, so that the UE receives the data of the to-be-broadcast MBMS service based on the frequency domain resource indication information and the modulation and coding mechanism of the to-be-broadcast MBMS service.

[0115] Specifically, the UE can receive data of the MBMS service to be broadcast based on the frequency domain resource indicated by the frequency domain resource indication information of the MBMS service to be broadcast, i.e., a physical resource block or a part of symbols in the physical resource block, and parse the data based on a modulation and coding scheme.

[0116] Further, downlink control information (DCI) containing the frequency domain resource indication information and the modulation and coding scheme of the MBMS service to be broadcast can be transmitted by using a transmission beam of the MBMS service to be broadcast.

[0117] It should be noted that in another specific implementation of the embodiment, the UE can obtain a G-RNTI of an MBMS service of interest through the SC-MCCH, and then detect DCI scrambled by the RNTI according to scheduling information in a corresponding time slot, and further obtain multicast data transmitted on a downlink shared channel.

[0118] In the embodiment, by transmitting the frequency domain resource indication information and the modulation and coding scheme of the MBMS service to be broadcast by using a transmission beam of the MBMS service to be broadcast, information transmission can be achieved while reducing signaling overhead.

[0119] In the embodiment, the transmission parameters of the MBMS service to be broadcast are broadcast, and then data of the MBMS service to be broadcast are broadcast, so that each UE receives a required MBMS service based on the transmission parameters of the MBMS service to be broadcast, thereby enabling the UE to know in which beam or beam group a required MBMS service of interest is transmitted according to an indication of the base station, and then receive the required MBMS service in a corresponding beam according to a beam that can be received, and further improving accuracy of information transmission and effectiveness of reception.

[0120] Reference is made to Figure 3 , Figure 3 is a flowchart of another MBMS service broadcast method in the embodiment. The another MBMS service broadcast method can be used on the side of a base station, and can further include steps S31 to S32, which are described below.

[0121] In step S31, inquiry information of one or more MBMS services is received through broadcasting, wherein the inquiry information is used to inquire whether the one or more MBMS services are required MBMS services respectively, and / or is used to inquire a requirement for transmission parameters of the required MBMS services.

[0122] In a specific implementation, more details about step S31 can be referred to Figure 1The description of step S11 in the method is performed, and thus is not repeated here.

[0123] In step S32, feedback information for the inquiry information is sent.

[0124] It can be understood that the sending of the feedback information for the inquiry information can enable the base station to determine the MBMS service to be broadcast and its transmission parameters based on the feedback information.

[0125] Further, the inquiry information includes whether the one or more MBMS services are respectively demand MBMS services; and the sending of the feedback information for the inquiry information includes: if it is determined that there is a demand MBMS service among the one or more MBMS services, the feedback information sent contains identification information of the demand MBMS service.

[0126] It can be understood that the feedback information sent contains the identification information of the demand MBMS service, which can enable the base station to only broadcast the demand MBMS service for which a UE has made a demand.

[0127] Further, the inquiry information includes inquiry of a demand for a transmission parameter of a demand MBMS service, and the transmission parameter includes one or more beams capable of receiving the demand MBMS service; and the sending of the feedback information for the inquiry information further includes: determining a transmission beam for receiving the demand MBMS service; and sending the determined one or more transmission beam identifications.

[0128] It can be understood that the sending of the determined one or more transmission beam identifications can enable the base station to only broadcast the demand MBMS service for which a UE has made a demand on a current demand beam.

[0129] Further, the transmission parameter further includes a modulation and coding scheme capable of receiving data of the MBMS service; and the sending of the feedback information for the inquiry information further includes: determining an applicable modulation and coding scheme for the transmission beam, and sending the applicable modulation and coding scheme.

[0130] Further, the inquiry information contains one or more levels of channel quality parameter thresholds, and the feedback information further includes an indicator capable of meeting the highest level of channel quality parameter threshold and a corresponding transmission beam identification.

[0131] It should be noted that if the inquiry information only contains one channel quality parameter threshold, the feedback information includes a transmission beam identification capable of meeting the channel quality parameter threshold.

[0132] Further, the feedback information further includes a modulation and coding scheme applicable to the UE.

[0133] Further, the one or more UEs are located on a serving cell, and the transmission parameter further comprises a modulation and coding scheme that can be used to receive data of the MBMS service; and the sending the feedback information for the inquiry information further comprises sending the feedback information, the feedback information comprising the modulation and coding scheme that is applicable to the required MBMS service.

[0134] Further, the inquiry information further comprises configuration information of available time slots of a random access preamble when the UE sends the feedback information; and the sending the feedback information for the inquiry information further comprises sending a random access preamble in the available time slots and sending the feedback information through MSG3 or MSGA.

[0135] Further, the method for broadcasting the MBMS service further comprises receiving the required MBMS service.

[0136] Further, the step of receiving the required MBMS service comprises receiving, through the broadcast, transmission parameters of the MBMS services to be broadcast; and receiving, through the broadcast, the required MBMS service based on the transmission parameters of the MBMS services to be broadcast.

[0137] Further, the receiving, through the broadcast, the transmission parameters of the MBMS services to be broadcast comprises one or more of the following: receiving, through the broadcast, identification information of each of the MBMS services to be broadcast, receiving beam information for transmitting each of the MBMS services to be broadcast, and receiving broadcast time slot indication information of each of the MBMS services to be broadcast.

[0138] Further, the receiving the beam information for transmitting each of the MBMS services to be broadcast comprises, for each of the MBMS services to be broadcast, determining in which beams to transmit according to a preset bit in an MCCH; and each bit of the preset bit is used to indicate whether the MBMS service to be broadcast is transmitted in one beam or a beam group.

[0139] Further, the receiving, through the broadcast, the required MBMS service based on the transmission parameters of the MBMS services to be broadcast comprises receiving, in a time slot indicated by the broadcast time slot indication information, downlink control signaling indicating frequency domain resource indication information and a modulation and coding scheme of the MBMS services to be broadcast; and receiving data of the MBMS services to be broadcast based on the frequency domain resource indication information and the modulation and coding scheme of the MBMS services to be broadcast.

[0140] In specific implementations, more details about the step S32 can be performed by referring to the description of steps S12 and S13 in Figure 1

[0141] ​In the embodiment of the present application, the UE can select appropriate beams to receive or adopt a combined receiving mode according to the data received by the UE for the MBMS service to be broadcast.

[0142] Further, the beams for transmitting the same MBMS service to be broadcast are multiple; the receiving the MBMS service by the UE further comprises: receiving the MBMS service to be broadcast by the beam with the strongest signal among the beams for transmitting the same MBMS service to be broadcast; or receiving the MBMS service to be broadcast by a randomly selected beam among the beams for transmitting the same MBMS service to be broadcast.

[0143] Specifically, for example, the base station indicates that the MBMS service interested by the UE is broadcast by beams 2, 3 and 4, the UE can receive beams 3, 4 and 5 of the serving cell (the UE finds that the signals of the beams exceed a preset threshold), the UE can receive the MBMS service by the beam 3 or the beam 4, or the UE can select the beam with the strongest signal to receive the MBMS service.

[0144] Further, the beams for transmitting the same MBMS service to be broadcast are multiple; the receiving the MBMS service by the UE further comprises: when the first beam is adopted to receive the MBMS service to be broadcast and cannot be correctly decoded, other beams are adopted to receive the MBMS service to be broadcast, and then the data of the MBMS service to be broadcast received twice or more times is combined and decoded.

[0145] Specifically, for example, the UE finds that the MBMS service broadcast by the beams 3 and 4 adopts the same modulation and coding mechanism, such as 64QAM, when the UE cannot be correctly decoded when receiving the MBMS service by one beam, the UE can simultaneously receive the MBMS service by the two beams, and then the combined receiving is adopted to improve the success rate of decoding. It should be noted that in the embodiment of the present application, the specific combined receiving technology and implementation steps are not limited.

[0146] In the embodiment of the present application, by setting the step of receiving the inquiry information of one or more MBMS services through broadcasting and then sending the feedback information for the inquiry information, the UE has the opportunity to upload its own demand to the base station, so that the base station determines the MBMS services to be broadcast and the transmission parameters thereof to be more in line with the demand of the UE. Compared with the prior art, the MBMS data is still broadcast in the Beam where there is no UE needing to receive the MBMS data, resulting in waste of wireless resources and low transmission efficiency due to the fact that the cell does not adopt a high modulation and coding mechanism when broadcasting the MBMS service. By using the scheme of the embodiment of the present application, the base station can communicate with the UE before configuring the transmission parameters of the MBMS service to be broadcast, so as to improve the transmission efficiency and reduce the waste of wireless resources.

[0147] With reference to Figure 4 , Figure 4 is a structural schematic diagram of an MBMS service broadcasting device in an embodiment of the present application. The MBMS service broadcasting device can be used in the base station side, and can further include:

[0148] The inquiry information broadcasting module 41 is configured to broadcast inquiry information of one or more MBMS services, wherein the inquiry information is used to inquire whether the one or more MBMS services are demand MBMS services respectively, and / or is used to inquire the demand for the transmission parameters of the demand MBMS services;

[0149] The feedback information receiving module 42 is configured to receive feedback information of one or more UEs for the inquiry information.

[0150] The determination module 43 is configured to determine the MBMS services to be broadcast and the transmission parameters thereof based on the feedback information.

[0151] The principle, specific implementation and beneficial effects of the MBMS service broadcasting device are the same as those of the MBMS service broadcasting method described above, which will not be described herein.

[0152] With reference to Figure 5 , Figure 5 is a structural schematic diagram of another MBMS service broadcasting device in an embodiment of the present application. The another MBMS service broadcasting device can be used in the UE side, and can further include:

[0153] The inquiry information receiving module 51 is configured to receive inquiry information of one or more MBMS services through broadcasting, wherein the inquiry information is used to inquire whether the one or more MBMS services are demand MBMS services respectively, and / or is used to inquire the demand for the transmission parameters of the demand MBMS services;

[0154] The feedback information sending module 52 is configured to send feedback information for the inquiry information, so that the base station determines the MBMS service to be broadcast and the transmission parameter of the MBMS service based on the feedback information.

[0155] The principle, implementation and advantages of the broadcast device of the MBMS service are described above in the description of the broadcast method of the MBMS service on the UE side, and will not be repeated here.

[0156] It should be noted that the technical solution of the present application can be applied to a 5G (5 Generation) communication system, and can also be applied to a 4G and 3G communication system, and can also be applied to future new communication systems, such as 6G, 7G, etc.

[0157] The embodiment of the present application further provides a storage medium having a computer program stored thereon, and the computer program is run by a processor to execute the steps of the above method. The storage medium can be a computer readable storage medium, for example, can include a non-volatile memory or a non-transitory memory, and can also include an optical disc, a mechanical hard disk, a solid state disk, etc.

[0158] Specifically, in the embodiment of the present application, the processor can be a central processing unit (CPU), and the processor can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0159] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct rambus random access memory (DR RAM).

[0160] The embodiments of the present application also provide a base station, comprising a memory and a processor, the memory has a computer program capable of running on the processor, and the processor executes the steps of the above method when running the computer program.

[0161] The base station (BS) in the embodiments of the present application can also be referred to as a base station device, which is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, devices providing base station functions in a 2G network include base transceiver stations (BTS), devices providing base station functions in a 3G network include NodeB, devices providing base station functions in a 4G network include evolved NodeB (eNB), in a wireless local area network (WLAN), devices providing base station functions are access points (AP), devices providing base station functions in 5G New Radio (NR) are gNB, and continue to evolve NodeB (ng-eNB), wherein the gNB and the terminal communicate with each other using NR technology, the ng-eNB and the terminal communicate with each other using E-UTRA (Evolved Universal Terrestrial Radio Access) technology, and the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiments of the present application also includes devices providing base station functions in future new communication systems and the like.

[0162] The base station controller in the embodiments of the present application is a device for managing a base station, such as a base station controller (BSC) in a 2G network, a radio network controller (RNC) in a 3G network, and a device for controlling and managing a base station in a future new communication system.

[0163] The network side network in the embodiments of the present application refers to a communication network providing communication services for terminals, including base stations of a radio access network, and can also include base station controllers of a radio access network, and can also include devices on the core network side.

[0164] The embodiments of the present application also provide a terminal including a memory and a processor, the memory storing a computer program capable of running on the processor, and the processor executing the steps of the above method when running the computer program. The terminal includes but is not limited to terminal devices such as mobile phones, computers, tablet computers and the like.

[0165] Specifically, the terminal in the embodiments of the present application can refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal device, wireless communication device, user agent or user equipment. The terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited thereto.

[0166] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art, without departing from the spirit and scope of the present application, can make various changes and modifications, and therefore the protection scope of the present application should be subject to the scope defined by the claims.

Claims

1. A broadcasting method for MBMS services, characterized in that, Includes the following steps: Broadcasting query information for one or more MBMS services, wherein the query information is used to inquire whether the one or more MBMS services are respectively required MBMS services, and / or to inquire about the requirements for transmission parameters of the required MBMS services, and the query information further includes: configuration information of available time slots for random access preamble when the UE sends feedback information; Receive feedback information from one or more UEs in response to the query information, wherein the random access preamble sent by the UE in the available time slot is received, and feedback information reported by the UE via MSG3 or MSGA is received; Based on the feedback information, the MBMS service to be broadcast and its transmission parameters are determined. The transmission parameters include one or more beams that can be used to receive each requested MBMS service. The feedback information also includes the identifier of the transmission beam requesting to receive the requested MBMS service. The step of determining the MBMS service to be broadcast and its transmission parameters based on the feedback information includes: Determine the transmission beams for the MBMS services that require them; The requested MBMS service is broadcast on the determined transmission beam.

2. The broadcasting method for MBMS services according to claim 1, characterized in that, The inquiry information includes whether the one or more MBMS services are respectively the requested MBMS services, and the feedback information includes the identification information of the requested MBMS services; Based on the feedback information, the MBMS service to be broadcast and its transmission parameters are determined as follows: Based on the identification information of the required MBMS services, determine whether each MBMS service is a required MBMS service; At least broadcast the MBMS services requested by UEs.

3. The broadcasting method for MBMS services according to claim 1, characterized in that, The transmission parameters also include: the modulation and coding mechanism for receiving data from the MBMS service; Based on the feedback information, determining the MBMS service to be broadcast and its transmission parameters further includes: On the beam transmitting the MBMS service, the applicable modulation and coding mechanisms are determined respectively.

4. The broadcasting method for MBMS services according to claim 3, characterized in that, The query information includes one or more levels of channel quality parameter thresholds, and the feedback information also includes an indicator that meets the highest level of channel quality parameter threshold and its corresponding required transmission beam.

5. The broadcasting method for MBMS services according to claim 3, characterized in that, The feedback information also includes the modulation and coding mechanism applicable to the UE.

6. The broadcasting method for MBMS services according to claim 2, characterized in that, The UE is located in the serving cell, and the transmission parameters further include: the modulation and coding mechanism for receiving data from the MBMS service; Based on the feedback information, determining the MBMS service to be broadcast and its transmission parameters further includes: Determine the modulation and coding mechanism applicable to the MBMS service to be broadcast.

7. The broadcasting method for MBMS services according to claim 1, characterized in that, Also includes: Broadcast the transmission parameters of the MBMS service to be broadcast; The data of the MBMS service to be broadcast is broadcast so that each UE can receive its own required MBMS service based on the transmission parameters of the MBMS service to be broadcast.

8. The broadcasting method for MBMS services according to claim 7, characterized in that, The transmission parameters of the MBMS service to be broadcast include one or more of the following: Broadcast the identification information of each MBMS service to be broadcast, broadcast the beam information used to transmit each MBMS service to be broadcast, and broadcast the broadcast timeslot indication information of each MBMS service to be broadcast.

9. The broadcasting method for MBMS services according to claim 7, characterized in that, The beam information used for transmitting each MBMS service to be broadcast includes: For each MBMS service to be broadcast, preset bits in the MCCH are used to indicate which beams or beam groups to transmit in; Each bit of the preset bit is used to indicate whether the MBMS service to be broadcast is transmitted in one beam or one beam group.

10. The broadcasting method for MBMS services according to claim 7, characterized in that, The data for the MBMS service to be broadcast includes: On the time slot indicated by the broadcast time slot indication information, downlink control signaling is sent on the transmission beam of the MBMS service to be broadcast to indicate the frequency domain resource indication information and modulation and coding mechanism of the MBMS service to be broadcast, so that the UE can receive the data of the MBMS service to be broadcast based on the frequency domain resource indication information and modulation and coding mechanism of the MBMS service to be broadcast.

11. A broadcasting method for MBMS services, characterized in that, Includes the following steps: The system receives query information from one or more MBMS services via broadcast. The query information is used to inquire whether the one or more MBMS services are respectively demand MBMS services, and / or to inquire about the requirements for transmission parameters of the demand MBMS services. The transmission parameters include one or more beams that can be used to receive each demand MBMS service. The query information also includes: configuration information of available time slots for random access preamble when sending feedback information. Send feedback information in response to the query information, the feedback information further includes the transmission beam identifier requesting to receive the requested MBMS service, wherein a random access preamble is sent in the available time slot and the feedback information is sent through MSG3 or MSGA; Receive MBMS services on the transmission beam of the MBMS service in demand.

12. The broadcasting method for MBMS services according to claim 11, characterized in that, The inquiry information includes whether the one or more MBMS services are respectively the requested MBMS services; The sending of feedback information in response to the inquiry includes: If it is determined that there is a demand MBMS service among the one or more MBMS services, the feedback information sent will include the identification information of the demand MBMS service.

13. The broadcasting method for MBMS services according to claim 12, characterized in that, The query information includes inquiries about the required transmission parameters for the MBMS service; The step of sending feedback information in response to the query also includes: Determine the transmission beam that will receive the requested MBMS service; Send one or more identified transmission beam identifiers.

14. The broadcasting method for MBMS services according to claim 13, characterized in that, The transmission parameters also include: a modulation and coding mechanism capable of receiving data from the MBMS service; The step of sending feedback information in response to the query also includes: For the transmission beam, a suitable modulation and coding mechanism is determined, and the suitable modulation and coding mechanism is transmitted.

15. The broadcasting method for MBMS services according to claim 14, characterized in that, The query information includes one or more levels of channel quality parameter thresholds, and the feedback information also includes an indicator that can meet the highest level of channel quality parameter threshold and its corresponding transmission beam identifier.

16. The broadcasting method for MBMS services according to claim 14, characterized in that, The feedback information also includes the modulation and coding mechanism applicable to the UE.

17. The broadcasting method for MBMS services according to claim 12, characterized in that, The one or more UEs are located on the serving cell, and the transmission parameters further include: a modulation and coding mechanism that can be used to receive data from the MBMS service; The step of sending feedback information in response to the query also includes: Send the feedback information, which includes receiving the modulation and coding mechanism applicable to the requested MBMS service.

18. The broadcasting method for MBMS services according to claim 11, characterized in that, Also includes: Receive the transmission parameters of the MBMS service to be broadcast via broadcast; Based on the transmission parameters of the MBMS service to be broadcast, it receives its own required MBMS service via broadcast.

19. The broadcasting method for MBMS services according to claim 18, characterized in that, The transmission parameters for receiving the MBMS service to be broadcast via broadcast include one or more of the following: The broadcast receives the identification information of each MBMS service to be broadcast, the beam information for transmitting each MBMS service to be broadcast, and the broadcast time slot indication information of each MBMS service to be broadcast.

20. The broadcasting method for MBMS services according to claim 18, characterized in that, Receiving beam information for transmitting each MBMS service to be broadcast includes: For each MBMS service to be broadcast, the beams to be transmitted are determined according to the preset bits in the MCCH; Each bit of the preset bit is used to indicate whether the MBMS service to be broadcast is transmitted on a beam or a group of beams.

21. The broadcasting method for MBMS services according to claim 18, characterized in that, Based on the transmission parameters of the MBMS service to be broadcast, receiving one's own requested MBMS service via broadcast includes: On the time slot indicated by the broadcast time slot indication information, receive frequency domain resource indication information indicating the MBMS service to be broadcast and downlink control signaling of the modulation and coding mechanism; Based on the frequency domain resource indication information and modulation and coding mechanism of the MBMS service to be broadcast, the data of the MBMS service to be broadcast is received.

22. The broadcasting method for MBMS services according to claim 21, characterized in that, Multiple beams are used to transmit the same MBMS service to be broadcast; The MBMS service that receives its own demand via broadcast also includes: In the beams used to transmit the same MBMS service to be broadcast, the beam with the strongest signal is used to receive the MBMS service to be broadcast. or, In the beams used to transmit the same MBMS service to be broadcast, a beam is randomly selected to receive the MBMS service to be broadcast.

23. The broadcasting method for MBMS services according to claim 21, characterized in that, Multiple beams are used to transmit the same MBMS service to be broadcast; The MBMS service that receives its own demand via broadcast also includes: When the first beam is used to receive the MBMS service to be broadcast, and it cannot be decoded correctly, other beams are used to receive the MBMS service to be broadcast, and then the process is repeated two or more times. The received data of the MBMS service to be broadcast is merged and decoded.

24. A broadcasting device for MBMS services, characterized in that, include: The query information broadcasting module is used to broadcast query information for one or more MBMS services, wherein the query information is used to inquire whether the one or more MBMS services are respectively required MBMS services, and / or to inquire about the requirements for transmission parameters of the required MBMS services. The query information also includes: configuration information of available time slots for random access preamble when the UE sends feedback information. The feedback information receiving module is used to receive feedback information from one or more UEs in response to the query information, wherein the feedback information receiving module is used to receive the random access preamble sent by the UE in the available time slot, and to receive the feedback information reported by the UE through MSG3 or MSGA; The determination module is used to determine the MBMS service to be broadcast and its transmission parameters based on the feedback information. The transmission parameters include one or more beams that can be used to receive each requested MBMS service. The feedback information also includes the identifier of the transmission beam that requests to receive the requested MBMS service. The determining module is also used to determine the transmission beam of the MBMS service in demand; and to broadcast the MBMS service in demand on the determined transmission beam.

25. A broadcasting device for MBMS services, characterized in that, include: An inquiry information receiving module is used to receive inquiry information from one or more MBMS services via broadcast. The inquiry information is used to inquire whether the one or more MBMS services are respectively demand MBMS services, and / or to inquire about the requirements for transmission parameters of the demand MBMS services. The transmission parameters include one or more beams that can be used to receive each demand MBMS service. The inquiry information also includes: configuration information of available time slots for random access preamble when sending feedback information. The feedback information sending module is used to send feedback information in response to the query information, so that the base station can determine the MBMS service to be broadcast and its transmission parameters based on the feedback information. The feedback information also includes the transmission beam identifier for requesting to receive the requested MBMS service. The feedback information sending module is also used to send a random access preamble in the available time slot and send the feedback information through MSG3 or MSGA. A module used to receive MBMS services on the transmission beam of MBMS services in demand.

26. A storage medium having a computer program stored thereon, characterized in that, When the computer program is run by the processor, it performs the steps of the broadcasting method of the MBMS service according to any one of claims 1 to 10, or performs the steps of the broadcasting method of the MBMS service according to any one of claims 11 to 23.

27. A base station, comprising a memory and a processor, wherein the memory stores a computer program capable of running on the processor, characterized in that, When the processor runs the computer program, it performs the steps of the broadcasting method of the MBMS service according to any one of claims 1 to 10.

28. A terminal comprising a memory and a processor, wherein the memory stores a computer program capable of running on the processor, characterized in that, When the processor runs the computer program, it performs the steps of the broadcasting method for the MBMS service according to any one of claims 11 to 23.

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