CN114793323A

CN114793323A - Broadcast transmission method and device

Info

Publication number: CN114793323A
Application number: CN202110097511.XA
Authority: CN
Inventors: 曾庆军; 傅力军; 李爽; 薛凯心; 邸斌; 张莹莹
Original assignee: China Radio And Television Network Co ltd
Current assignee: China Radio And Television Network Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2022-07-26
Anticipated expiration: 2041-01-25
Also published as: CN114793323B

Abstract

The application discloses a broadcast transmission method and a broadcast transmission device, which are used for guaranteeing fairness of broadcast transmission in a mobile scene. The broadcast transmission method provided by the application comprises the following steps: determining the type of the broadcast service which needs to be transmitted currently; processing the broadcast service to be transmitted according to the type of the broadcast service to be transmitted currently and a preset threshold corresponding to transmission resources occupied by the broadcast service to be transmitted in a single time slot.

Description

Broadcast transmission method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a broadcast transmission method and apparatus.

Background

With the continuous development of the technology, novel audio-visual media services such as UGC short videos, 4K/8K ultra-high definition live broadcasts, VR/AR and the like are rapidly increased, and rich and immersive video experience is provided for users. For example, in a large-scale sports event, a user can watch ultrahigh-definition live broadcasts of multiple machine positions through a mobile terminal, or experience a 360-degree panoramic immersive competition experience through VR equipment. New service requirements such as 4K/8K, VR/AR are emerging, and new challenges are presented to network bandwidth and transmission requirements. At present, after a 4K video is compressed in an H.265 format, the actually required network bandwidth is about 50Mbps, the bandwidth requirement of an 8K video reaches 100Mbps, and the bandwidth required by a VR video at least reaches more than Gbit level.

The existing live program is transmitted in a unicast mode, a unicast data channel needs to be established between each user and a server, and the server needs to send a data packet to each user. This method will bring a great burden to the server, occupy a lot of network resources, and consume network bandwidth. In contrast to the unicast communication mode, the broadcast copies the data packet to all users in the network, and a plurality of users can share the same network resource, thereby effectively saving the network bandwidth resource. Video content transmitted based on a broadcast mode in the existing mobile scene is mainly CMMB (China Mobile multimedia broadcasting), but the bandwidth resource of the CMMB is very limited, and one-way television programs can be transmitted within 500kbps generally and cannot meet the current service requirements. The requirement of bandwidth can be solved to a certain extent by using a 4G mobile network based on broadcast mode transmission, but one-path broadcast content occupies too large resources easily, and the fairness of multi-path broadcast transmission cannot be guaranteed.

Disclosure of Invention

The embodiment of the application provides a broadcast transmission method and device, which are used for guaranteeing the fairness of broadcast transmission in a mobile scene, guaranteeing the fairness of multi-path broadcast transmission on the basis of solving the bandwidth requirement, meeting the requirements of novel services such as multi-view 4K/8K ultra-high definition live broadcast, VR/AR and the like, and providing better service for a mobile terminal in the coverage range of the mobile terminal.

On a network side, a broadcast transmission method provided in an embodiment of the present application includes:

determining the type of the broadcast service which needs to be transmitted currently;

and processing the broadcast service to be transmitted at present according to the type of the broadcast service to be transmitted at present and a preset threshold corresponding to a transmission resource occupied by the broadcast service to be transmitted in a single time slot.

Through the broadcast service type that needs the transmission at present, and the transmission resource that transmission broadcast service needs to occupy in the single time slot corresponds predetermine the threshold, the broadcast service to current needs transmission is handled, thereby broadcast transmission's fairness under the mobile scene has been ensured, on the basis of solving the bandwidth demand, guarantee multichannel broadcast transmission's fairness has satisfied novel business demands such as clear live broadcast of 4K 8K superelevation at many visual angles and VR/AR, provide better service for the mobile terminal in its coverage.

Optionally, according to the type of the broadcast service that needs to be currently transmitted and a preset threshold corresponding to a transmission resource that needs to be occupied by the broadcast service that is transmitted in a single timeslot, processing is performed on the broadcast service that needs to be currently transmitted, which specifically includes:

if the type of the broadcast service which needs to be transmitted currently is a first broadcast service type, and the transmission resource which needs to be transmitted in a single time slot exceeds a preset threshold;

or, the current broadcast service type to be transmitted is the first broadcast service type, and the transmission resource required in a single time slot does not exceed the preset threshold;

or, the current broadcast service type to be transmitted is a second broadcast service type, and the transmission resource required in the single time slot does not exceed the preset threshold;

then, the broadcast service flow is continuously executed for the broadcast service currently needing to be transmitted.

Optionally, according to the type of the broadcast service that needs to be currently transmitted and a preset threshold corresponding to a transmission resource that needs to be occupied by the broadcast service that is transmitted in a single time slot, processing is performed on the broadcast service that needs to be currently transmitted, which specifically includes:

if the broadcast service type needing to be transmitted currently is a second broadcast service type and the required transmission resource in the single time slot exceeds a preset threshold, then:

feeding back information to the core network, and indicating to refuse to send the current broadcast service required to be transmitted;

or, feeding back information to the core network, and continuously sending the broadcast service to be transmitted currently;

or, feeding back information to the core network, indicating that data compression needs to be performed on the broadcast service currently needing to be transmitted, so as to ensure that the transmission resource occupied by the service in a single time slot does not exceed a preset threshold.

Optionally, if it is determined that the broadcast service currently needing to be transmitted is to be continuously transmitted, the method further includes:

sending system information to a terminal, wherein the system information comprises configuration information of a Multicast Control Channel (MCCH);

sending an MCCH to a terminal, wherein the MCCH comprises configuration information of a Multicast Transmission Channel (MTCH);

and transmitting the MTCH to the terminal, wherein the MTCH comprises the broadcast data information.

sending system information, wherein the system information comprises configuration information of a single cell multicast control channel (SC-MCCH), and the configuration information of the SC-MCCH comprises SC-RNTI information;

sending a first Physical Downlink Control Channel (PDCCH) scrambled by the SC-RNTI, wherein the first PDCCH is used for sending configuration information of an SC-MCCH for bearing broadcast control information;

the SC-MCCH is sent, and the SC-MCCH contains G-RNTI information;

transmitting a second PDCCH scrambled by the G-RNTI, wherein the second PDCCH is used for transmitting configuration information of a single-cell multicast transmission channel (SC-MTCH) carrying broadcast data information;

and transmitting the SC-MTCH.

On a terminal side, a broadcast transmission method provided in an embodiment of the present application includes:

acquiring configuration information of a Multicast Transport Channel (MTCH);

and receiving the MTCH based on the configuration information of the MTCH, and acquiring broadcast data information from the MTCH, wherein the broadcast service data information is the broadcast service data information which is determined to be sent by a network side according to the broadcast service type of the broadcast service and a preset threshold corresponding to transmission resources required to be occupied by the broadcast service in a single time slot.

Optionally, the acquiring the MTCH configuration information specifically includes:

receiving system information sent by a network side, and acquiring configuration information of a Multicast Control Channel (MCCH) from the system information;

and receiving the MCCH based on the configuration information of the MCCH, and acquiring the configuration information of a multicast transmission channel MTCH from the MCCH.

Optionally, the MTCH is specifically a single cell multicast transport channel SC-MTCH;

the obtaining of the MTCH configuration information specifically includes:

receiving system information sent by a network side, acquiring configuration information of a single-cell multicast control channel (SC-MCCH) from the system information, and acquiring SC-RNTI information from the configuration information of the SC-MCCH;

receiving a first Physical Downlink Control Channel (PDCCH) scrambled by the SC-RNTI, and acquiring configuration information of an SC-MCCH for scheduling and bearing broadcast control information from the first PDCCH;

receiving the SC-MCCH based on the configuration information of the SC-MCCH, and acquiring G-RNTI information from the SC-MCCH;

and receiving a second PDCCH scrambled by the G-RNTI, and acquiring configuration information of a single cell multicast transmission channel (SC-MTCH) for scheduling and bearing broadcast data information from the second PDCCH.

On the network side, an embodiment of the present application provides a broadcast transmission apparatus, including:

a first determining unit, configured to determine a broadcast service type currently needing to be transmitted;

and the second determining unit is used for processing the broadcast service needing to be transmitted at present according to the type of the broadcast service needing to be transmitted at present and a preset threshold corresponding to a transmission resource which needs to be occupied by the broadcast service in a single time slot.

On a terminal side, an embodiment of the present application provides a broadcast transmission apparatus, including:

a first obtaining unit, configured to obtain configuration information of a multicast transport channel MTCH;

and a second obtaining unit, configured to receive the MTCH based on the MTCH configuration information, and obtain broadcast data information from the MTCH, where the broadcast service data information is broadcast service data information that is determined to be sent by a network side according to a broadcast service type of the broadcast service and a preset threshold corresponding to a transmission resource that needs to be occupied for transmitting the broadcast service in a single timeslot.

Another embodiment of the present application provides a broadcast transmission apparatus (which may be a network-side apparatus or a terminal-side apparatus), which includes a memory and a processor, wherein the memory is used for storing program instructions, and the processor is used for calling the program instructions stored in the memory, and executing any one of the methods according to the obtained program.

Another embodiment of the present application provides a computer storage medium having stored thereon computer-executable instructions for causing a computer to perform any of the methods described above.

Drawings

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

Fig. 1 is a schematic diagram of a CMMB architecture provided by an embodiment of the present application;

fig. 2 is a schematic overall flowchart of a broadcast transmission method according to an embodiment of the present application;

fig. 3 is a schematic overall flowchart of another broadcast transmission method according to an embodiment of the present application;

fig. 4 is a flowchart illustrating a broadcast transmission method on a network side according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a broadcast transmission method at a terminal side according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a broadcast transmission apparatus on a network side according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a broadcast transmission apparatus at a terminal side according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another broadcast transmission apparatus on a network side according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another broadcast transmission apparatus at a terminal side according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The CMMB is a system for receiving services such as broadcast television programs and information services anytime and anywhere by using a satellite and terrestrial radio broadcasting mode with a small screen of seven inches or less, a small-sized, mobile and portable handheld terminal such as a mobile phone, a PDA, an MP3, an MP4, a digital camera, a notebook computer, and the like.

The CMMB technology system covers the whole country by using a high-power S-waveband satellite signal, covers a satellite signal blind area by using a ground supplementary transponder for forwarding the satellite signal with the same frequency and content, and constructs a return channel by using a wireless mobile communication network to form a mobile multimedia broadcasting network combining unidirectional broadcasting and bidirectional interaction.

The CMMB architecture is shown in fig. 1. After the ground transmitting center transmits the signal to the S-band synchronous satellite, the synchronous satellite transmits the received signal, and the transmitted S-band signal is directly received by a ground receiving terminal or is received by the ground receiving terminal after being processed by the supplementary transponder. The satellite also sends the signals to the supplementary transponder through the distribution channel for processing, and the signals are processed and then retransmitted through the supplementary transponder to supplement the shadow area covered by the satellite.

The CMMB can work in a frequency band of 2635-2660MHz and can develop satellite multimedia broadcasting service in 25MHz, but the interference of ground multipath propagation is considered, so two wireless bandwidth modes of 8MHz (effective bandwidth of 7.512MHz) and 2MHz (effective bandwidth of 1.536MHz) are generally provided, and the precious wireless bandwidth resources are conveniently and flexibly used. CMMB can transmit 8 sets of standard definition television programs and 10 sets of broadcast programs in an 8M bandwidth, one path of television program can be transmitted within 500kbps generally, and bandwidth resources are very limited. Furthermore, although multiple modulation methods may provide higher data rates within a given transmission bandwidth. Compared with QPSK, the bandwidth utilization of 16QAM and 64QAM is increased by 2 times and 3 times respectively. However, the higher order modulation scheme is less robust to channel noise. Modulation schemes such as 16QAM or 64QAM require higher values of Eb/N0 at the receiver for a given probability of bit error than QPSK. As the CMMB provides broadcast television programs and information services in a mode of combining satellite and ground broadcast, and considering that the signal-to-noise ratio in the air of the satellite is very poor, and the CMMB only serves a small screen below 7 inches, in order to ensure the transmission quality, the CMMB standard mostly adopts a QPSK modulation mode to reduce the transmission rate, and the frequency spectrum utilization rate is only 2 b/s/Hz. The requirement of bandwidth can be solved to a certain extent by utilizing a 4G mobile network based on broadcast mode transmission, but because the frequency resource required by transmitting one-path broadcast is not limited, one-path broadcast content occupies too large resource, other-path broadcast cannot transmit data stably in time, and the fairness of multi-path broadcast cannot be guaranteed.

Therefore, the embodiment of the application provides a broadcast transmission method and device, so as to ensure the fairness of broadcast transmission in a mobile scene, ensure the fairness of multi-channel broadcast transmission on the basis of solving the bandwidth requirement, meet the requirements of novel services such as multi-view 4K/8K ultra-high definition live broadcast, VR/AR and the like, and provide better service for mobile terminals in the coverage range of the mobile terminals.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a universal microwave Access (WiMAX) system, a 5G NR system, and the like. These various systems include terminal devices and network devices.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the name of the terminal device may also be different, for example, in a 5G system, the terminal device may be referred to as a User Equipment (UE). Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones) and computers with mobile terminal devices, e.g., mobile devices that may be portable, pocket, hand-held, computer-included, or vehicle-mounted, communicate with one or more core networks via the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells. A base station may also be referred to as an access point or as a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to interconvert received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may also be an evolved network device (eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station in a 5G network architecture (next generation system), and may also be a home evolved node B (HeNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like, which are not limited in the embodiments of the present application.

Various embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the display sequence in the embodiments of the present application only represents the sequence of the embodiments, and does not represent the advantages and disadvantages of the technical solutions provided by the embodiments.

The method for guaranteeing fairness of broadcast transmission in a mobile scene, provided by the embodiment of the application, is used for bearing a broadcast technology on a 5G core network and a cellular base station, realizing a high-rate broadcast transmission service by means of the 5G mobile communication technology, reducing consumption of network bandwidth resources, guaranteeing fairness of multi-path broadcast transmission by configuring maximum frequency resource information which can be scheduled by a single broadcast service at the base station side, and meeting diversified service requirements of users.

The method is that an application server initiates the establishment of a session, and a network element interacts through a special signaling. The core network determines the area information of the broadcast service to be started, sends a broadcast service starting notice to the base station in the area and establishes a broadcast data channel. The base station side or the core network side defines the type of the broadcast service and configures the maximum frequency resource information which can be scheduled by a single broadcast service. After receiving the broadcast service information transmission request, the base station determines whether the frequency resource occupied by the broadcast service transmitted in a single time slot exceeds a preset threshold (threshold). If the frequency resource exceeds the threshold, the base station feeds back information to the core network to indicate that data compression is needed so as to ensure that the frequency resource occupied by the broadcast service transmitted in a single time slot does not exceed the threshold. The core network may indicate to the base station that compression is required; or the base station may only feed back the information exceeding the threshold, and the core network may decide whether to compress or continue transmission.

The base station sends the broadcast receiving parameters corresponding to the broadcast service to all UEs in the cell through a Multicast Control Channel (MCCH), and sends the service data to the UEs through a Multicast Transport Channel (MTCH). The MCCH is used for transmitting control information related to receiving a Multicast Broadcast Service (MBS), including subframe allocation and modulation and coding pattern of each Multicast Channel (MCH), and the like.

An illustration of several specific embodiments is given below.

Example 1:

referring to fig. 2, a base station predefines or semi-statically configures a first broadcast service type and a second broadcast service type. The first broadcast service type may refer to emergency broadcast services such as emergency services and public safety; the second broadcast service type may refer to, for example, non-emergency broadcast services other than the first broadcast service type. The base station pre-configures or semi-statically configures threshold information (threshold) indicating a maximum frequency resource that can be scheduled for a single broadcast service. The semi-persistent scheduling indicates that the base station indicates the current scheduling information of the UE through a Physical Downlink Control Channel (PDCCH) in initial scheduling, and if the UE identifies that the scheduling information is semi-persistent scheduling, the UE stores the current scheduling information, and transmits or receives the service data at the same time-frequency resource location every fixed period. Currently, traffic types or transmission priorities are classified into two broad categories, emergency traffic and non-emergency traffic. Mainly to distinguish emergency traffic without being limited by a threshold.

After receiving the broadcast session resource setting request of the core network, the base station judges whether the frequency resource occupied by the broadcast service transmitted in a single time slot reaches or exceeds threshold according to the threshold information threshold configured by the base station. The session resource setting request specifically includes, for example, tracking area lists (TAIs), NR cell global identity lists (NR-CGIs), quality of service (QoS) flows, and global broadcast bearer service identities (e.g., TMGI).

If the base station receives the first broadcast service type and the required resource exceeds the threshold, or the base station receives the first broadcast service type and the required resource does not exceed the threshold, or the base station receives the second broadcast service type and the required resource does not exceed the threshold, the base station continues to execute the broadcast service flow (namely, the step of continuously executing the broadcast service transmission without reporting to the core network). If the base station receives the second broadcast service type and the required resource exceeds the threshold, the base station feeds back information to the core network to refuse the service transmission, or the base station continues to transmit the service after feeding back information to the core network (namely, the base station reports that the service exceeds the threshold (but does not need core network processing)), or the base station feeds back information to the core network to perform data compression so as to ensure that the frequency resource occupied by the service in a single time slot does not exceed the threshold.

If the base station determines to continue to send the broadcast service which needs to be transmitted currently, the following steps are executed:

a base station sends system information, where the system information carries MCCH configuration information, and the MCCH configuration information includes frequency resources and/or time slots and/or sending periods and/or Modulation and Coding Schemes (MCS), and the like.

And the UE receives the system message sent by the base station to acquire the configuration information of the MCCH, and acquires frequency resources and/or time slots and/or sending periods and/or MCS and the like through the configuration information of the MCCH.

The base station transmits the MCCH which includes Common Subframe Allocation Period (CSA) and/or CSA pattern and/or Scheduling Period (MCH Scheduling Period, MSP) of each Multicast Channel (MCH) and/or MTCH occupied Subframe, etc.

And the UE receives the MCCH according to the acquired configuration information of the MCCH, and acquires the CSA period and/or CSA pattern and/or MSP and/or MTCH occupied sub-frame according to the received MCCH.

And the base station sends the MTCH, and the MTCH bears the broadcast data information.

And the UE receives the MTCH according to the acquired MTCH occupation subframe information and acquires the broadcast data information from the MTCH occupation subframe information.

Example 2:

referring to fig. 3, a base station predefines or semi-statically configures a first broadcast service type and a second broadcast service type, where the first broadcast service type refers to emergency broadcast services such as emergency services and public safety, and the second broadcast service type refers to non-emergency broadcast services except for the first broadcast service type. The base station pre-configures or semi-statically configures threshold information, wherein the threshold information is used for indicating the maximum frequency resource which can be scheduled by a single broadcast service.

After receiving the core network broadcast session resource setting request, the base station judges whether the occupied frequency resource transmitted in a single time slot reaches or exceeds threshold according to threshold information threshold configured by the base station.

And if the base station receives the first broadcast service type and the required resource exceeds the threshold, or the base station receives the first broadcast service type and the required resource does not exceed the threshold, or the base station receives the second broadcast service type and the required resource does not exceed the threshold, the base station continues to execute the broadcast service flow. If the base station receives the second broadcast service type and the required resource exceeds the threshold, the base station feeds back information to the core network to refuse the service transmission, or the base station feeds back information to the core network and then continues to transmit the service, or the base station feeds back information to the core network to perform data compression so as to ensure that the frequency resource occupied in the single time slot of the service does not exceed the threshold.

a base station sends system information, wherein the system information carries configuration information of a Single Cell Multicast Control Channel (SC-MCCH), and the configuration information of the SC-MCCH comprises Single Cell-Radio Network temporary identifier (SC-RNTI) information and the like.

And the UE receives the system message sent by the base station to acquire the configuration information of the SC-MCCH, and acquires the SC-RNTI through the configuration information of the SC-MCCH.

And the base station sends a PDCCH (first PDCCH for short) scrambled by the SC-RNTI, wherein the first PDCCH is used for scheduling the SC-MCCH carrying the broadcast control information.

And the UE receives the PDCCH for scheduling the SC-MCCH according to the obtained SC-RNTI.

And the base station schedules an SC-MCCH (Single Carrier-multicast control channel) for bearing broadcast control information according to the first PDCCH, wherein the SC-MCCH comprises information such as a Group-Radio Network temporary Identity (G-RNTI).

And the UE receives the SC-MCCH according to the acquired scheduling information carried by the first PDCCH, and the UE acquires the G-RNTI according to the received SC-MCCH. The scheduling information specifically includes a transmission format, resource allocation, uplink scheduling grant, power control, and uplink retransmission information.

And the base station transmits the PDCCH scrambled by the G-RNTI (a second PDCCH for short), and the second PDCCH is used for scheduling SC-MTCH carrying broadcast data information.

And the UE receives a second PDCCH for scheduling the SC-MTCH according to the acquired G-RNTI information.

And the base station schedules SC-MTCH carrying the broadcast data information through a second PDCCH.

And the UE receives the SC-MTCH according to the scheduling information carried by the second PDCCH and acquires the broadcast data information by receiving the SC-MTCH.

In summary, the method of the embodiment ensures that the occupied frequency resource in a single time slot does not exceed the threshold by configuring the maximum frequency resource information that can be scheduled by a single broadcast service at the base station side, meets the broadcast transmission requirement of a large bandwidth on the basis of being widely adapted to various types of 5G terminals, and ensures the fairness of multi-path broadcast transmission.

Referring to fig. 4, on a network side, for example, on a base station side of an access network, a broadcast transmission method provided in an embodiment of the present application includes:

s101, determining the type of the broadcasting service which needs to be transmitted currently;

s102, processing the broadcast service needing to be transmitted at present according to the type of the broadcast service needing to be transmitted at present and a preset threshold corresponding to transmission resources needing to be occupied by the broadcast service in a single time slot.

The transmission resource includes, for example, a frequency resource.

The broadcast service types include, for example, a first broadcast service type, such as an emergency service type, and a second broadcast service type, such as a non-emergency service type.

or, the current broadcast service type to be transmitted is the first broadcast service type, and the transmission resource required in the single time slot does not exceed the preset threshold;

feeding back information to the core network, and indicating that the broadcast service which needs to be transmitted currently is refused to be transmitted;

sending an MCCH to a terminal, wherein the MCCH comprises configuration information of a Multicast Transmission Channel (MTCH), and the configuration information of the MTCH comprises MTCH occupied subframe information for example;

sending a first Physical Downlink Control Channel (PDCCH) scrambled by the SC-RNTI, wherein the first PDCCH is used for sending configuration information of an SC-MCCH bearing broadcast control information; namely, the first PDCCH is used for scheduling SC-MCCH;

sending the SC-MCCH, wherein the SC-MCCH contains G-RNTI information;

transmitting a second PDCCH scrambled by the G-RNTI, wherein the second PDCCH is used for transmitting configuration information of a single-cell multicast transmission channel (SC-MTCH) carrying broadcast data information; namely, the second PDCCH is used for scheduling SC-MTCH;

and transmitting the SC-MTCH.

Correspondingly, referring to fig. 5, on the terminal side, a broadcast transmission method provided in an embodiment of the present application includes:

s201, acquiring configuration information of a Multicast Transport Channel (MTCH);

and S202, receiving the MTCH based on the configuration information of the MTCH, and acquiring broadcast data information from the MTCH, wherein the broadcast service data information is the broadcast service data information which is determined to be sent by a network side according to the broadcast service type of the broadcast service and a preset threshold corresponding to transmission resources required to be occupied by the broadcast service in a single time slot.

the obtaining of the MTCH configuration information specifically includes:

Referring to fig. 6, on a network side, for example, on a base station side, a broadcast transmission apparatus provided in an embodiment of the present application includes:

the processor 500, which is used to read the program in the memory 520, executes the following processes:

processing the broadcast service to be transmitted according to the type of the broadcast service to be transmitted currently and a preset threshold corresponding to transmission resources occupied by the broadcast service to be transmitted in a single time slot.

or, the current broadcast service type to be transmitted is a second broadcast service type, and the transmission resource required in a single time slot does not exceed a preset threshold;

then, the broadcast service process is continuously executed for the broadcast service currently needing to be transmitted.

Optionally, if it is determined that the broadcast service currently needing to be transmitted is to be continuously transmitted, the processor 500 is further configured to:

transmitting system information including configuration information of a Multicast Control Channel (MCCH) to a terminal through a transceiver 510;

sending an MCCH to a terminal through a transceiver 510, the MCCH including configuration information of a multicast transmission channel MTCH;

the MTCH, which includes broadcast data information, is transmitted to the terminal through the transceiver 510.

transmitting system information through a transceiver 510, wherein the system information includes configuration information of a single cell multicast control channel (SC-MCCH), and the configuration information of the SC-MCCH includes SC-RNTI information;

transmitting a first Physical Downlink Control Channel (PDCCH) scrambled by the SC-RNTI through a transceiver 510, wherein the first PDCCH is used for transmitting configuration information of an SC-MCCH for bearing broadcast control information;

transmitting the SC-MCCH through a transceiver 510, the SC-MCCH including G-RNTI information;

transmitting, by the transceiver 510, a second PDCCH scrambled by the G-RNTI, the second PDCCH being used to transmit configuration information of a single cell multicast transport channel SC-MTCH carrying broadcast data information;

the SC-MTCH is transmitted through a transceiver 510.

A transceiver 510 for receiving and transmitting data under the control of the processor 500.

Wherein in fig. 6 the bus architecture may comprise any number of interconnected buses and bridges, in particular one or more processors, represented by the processor 500, and various circuits, represented by the memory 520, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 510 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.

The processor 500 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD).

Referring to fig. 7, on the terminal side, a broadcast transmission apparatus provided in an embodiment of the present application includes:

the processor 600 is used for reading the program in the memory 620 and executing the following processes:

acquiring configuration information of a Multicast Transport Channel (MTCH);

receiving system information sent by a network side through a transceiver 610, and acquiring configuration information of a Multicast Control Channel (MCCH) from the system information;

and receiving the MCCH based on the configuration information of the MCCH, and acquiring the configuration information of a Multicast Transmission Channel (MTCH) from the MCCH.

the obtaining of the MTCH configuration information specifically includes:

receiving system information sent by a network side through a transceiver 610, acquiring configuration information of a single-cell multicast control channel SC-MCCH from the system information, and acquiring SC-RNTI information from the configuration information of the SC-MCCH;

receiving a first Physical Downlink Control Channel (PDCCH) scrambled by the SC-RNTI through a transceiver 610, and acquiring configuration information of an SC-MCCH (Single Carrier control channel) for scheduling and bearing broadcast control information from the first PDCCH;

and receiving a second PDCCH scrambled by the G-RNTI through the transceiver 610, and acquiring configuration information of a single-cell multicast transmission channel SC-MTCH for scheduling and carrying broadcast data information from the second PDCCH.

A transceiver 610 for receiving and transmitting data under the control of the processor 600.

Wherein in fig. 7 the bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented by processor 600, and various circuits, represented by memory 620, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 630 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

Alternatively, the processor 600 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

Referring to fig. 8, on the network side, another broadcast transmission apparatus provided in the embodiment of the present application includes:

a first determining unit 11, configured to determine a type of a broadcast service currently needing to be transmitted;

the second determining unit 12 is configured to process the broadcast service that needs to be currently transmitted according to the type of the broadcast service that needs to be currently transmitted and a preset threshold corresponding to a transmission resource that needs to be occupied for transmitting the broadcast service in a single timeslot.

The unit may also execute various processes described in the network side method, which are not described herein again.

Referring to fig. 9, on the terminal side, another broadcast transmission apparatus provided in the embodiment of the present application includes:

a first acquiring unit 21, configured to acquire configuration information of a multicast transport channel MTCH;

a second obtaining unit 22, configured to receive the MTCH based on the MTCH configuration information, and obtain broadcast data information from the MTCH, where the broadcast service data information is broadcast service data information that is determined to be sent by a network side according to a broadcast service type of the broadcast service and a preset threshold corresponding to a transmission resource that needs to be occupied for transmitting the broadcast service in a single timeslot.

The unit may also execute various processes described in the terminal-side method, which are not described herein again.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The embodiment of the present application provides a computing device, which may specifically be a desktop computer, a portable computer, a smart phone, a tablet computer, a Personal Digital Assistant (PDA), and the like. The computing device may include a Central Processing Unit (CPU), memory, input/output devices, etc., the input devices may include a keyboard, mouse, touch screen, etc., and the output devices may include a Display device, such as a Liquid Crystal Display (LCD), a Cathode Ray Tube (CRT), etc.

The memory may include Read Only Memory (ROM) and Random Access Memory (RAM), and provides the processor with program instructions and data stored in the memory. In the embodiments of the present application, the memory may be used for storing a program of any one of the methods provided by the embodiments of the present application.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained program instructions by calling the program instructions stored in the memory.

Embodiments of the present application provide a computer storage medium for storing computer program instructions for an apparatus provided in the embodiments of the present application, which includes a program for executing any one of the methods provided in the embodiments of the present application.

The computer storage media may be any available media or data storage device that can be accessed by a computer, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

The method provided by the embodiment of the application can be applied to terminal equipment and also can be applied to network equipment.

The Terminal device may also be referred to as a User Equipment (User Equipment, abbreviated as "UE"), a Mobile Station (Mobile Station, abbreviated as "MS"), a Mobile Terminal (Mobile Terminal), or the like, and optionally, the Terminal may have a capability of communicating with one or more core networks through a Radio Access Network (RAN), for example, the Terminal may be a Mobile phone (or referred to as a "cellular" phone), a computer with Mobile property, or the like, and for example, the Terminal may also be a portable, pocket, hand-held, computer-built-in, or vehicle-mounted Mobile device.

A network device may be a base station (e.g., access point) that refers to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to interconvert received air frames and IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate attribute management for the air interface. For example, the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (NodeB or eNB or e-NodeB) in LTE, or a gNB in 5G system. The embodiments of the present application are not limited.

The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.

In summary, in the embodiment of the present application, the frequency resource allocation of broadcast transmission is controlled by the base station side, so that the phenomenon that a single broadcast service occupies too many frequency resources is avoided, and the fairness of multi-channel broadcast transmission is ensured.

According to the embodiment of the application, the content is transmitted in a broadcasting mode, the network bandwidth is effectively saved, and high-quality service can be provided for scenes such as high-definition videos, sports events, concerts, live delivery, VR/AR and the like.

The embodiment of the application adopts the 5G broadcast technology, the terminal does not need to carry out special adaptation of a hardware layer aiming at the broadcast service, and does not need to set a separate radio frequency channel and an antenna aiming at the broadcast service, and each type of standard terminal can receive the 5G broadcast service.

According to the embodiment of the application, by increasing the information amount in the broadcast content, more broadcast resources can be provided, listeners can select the broadcast resources according to personal preferences, and the method can gradually increase the number of broadcast users.

The 5G network applied by the embodiment of the application has high transmission rate, can effectively reduce time delay and errors, transmits high-quality video programs, meets the requirements of mobile broadband and high-rate user experience and ultrahigh flow services such as cloud bearing service, 4K/8K ultrahigh-definition video streaming, VR/AR and high-speed downloading experience, and enhances the user impression.

That is to say, in the embodiment of the present application, the maximum frequency resource information that can be scheduled by a single broadcast service is configured at the base station side. After receiving the broadcast service information transmission request, the base station judges whether the frequency resource required to be occupied transmitted in a single time slot exceeds threshold. If the frequency resource exceeds the threshold, the base station feeds back information to the core network for data compression so as to ensure that the occupied frequency resource in a single time slot does not exceed the threshold. And the base station sends the broadcast service data to all the UE of the cell through a broadcast channel. The base station side controls the frequency resource allocation of the broadcast transmission, thereby ensuring the fairness of the multi-path broadcast transmission. And the content is transmitted in a broadcast mode, so that the consumption of bandwidth resources is reduced, and the utilization efficiency of frequency spectrum is improved. The frequency resource information is only configured on the base station side, the hardware configuration of the terminal is not changed, and the method can be widely suitable for various 5G terminals.

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, 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 embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 broadcast transmission method, comprising:

2. The method according to claim 1, wherein processing the broadcast service currently required to be transmitted according to the type of the broadcast service currently required to be transmitted and a preset threshold corresponding to a transmission resource required to be occupied by the broadcast service transmitted in a single timeslot specifically includes:

3. The method according to claim 1, wherein processing the broadcast service currently required to be transmitted according to the type of the broadcast service currently required to be transmitted and a preset threshold corresponding to a transmission resource required to be occupied by the broadcast service transmitted in a single timeslot specifically includes:

feeding back information to a core network, and indicating to refuse to send the current broadcast service needing to be transmitted;

4. The method according to claim 2 or 3, wherein if it is determined to continue transmitting the broadcast service currently requiring transmission, the method further comprises:

sending an MCCH to a terminal, wherein the MCCH comprises configuration information of a multicast transmission channel MTCH;

5. The method of claim 2 or 3, wherein if it is determined to continue transmitting the broadcast service currently in need of transmission, the method further comprises:

sending system information, wherein the system information comprises configuration information of a single-cell multicast control channel (SC-MCCH), and the configuration information of the SC-MCCH comprises single-cell radio network temporary identifier (SC-RNTI) information;

sending a first Physical Downlink Control Channel (PDCCH) scrambled by the SC-RNTI, wherein the first PDCCH is used for sending configuration information of an SC-MCCH bearing broadcast control information;

sending the SC-MCCH, wherein the SC-MCCH comprises group scheduling identifier G-RNTI information;

and transmitting the SC-MTCH.

6. A broadcast transmission method, comprising:

acquiring configuration information of a Multicast Transport Channel (MTCH);

and receiving the MTCH based on the configuration information of the MTCH, and acquiring broadcast data information from the MTCH, wherein the broadcast service data information is the broadcast service data information which is determined to be sent by a network side according to the broadcast service type of the broadcast service and a preset threshold corresponding to transmission resources required to be occupied by the broadcast service transmission in a single time slot.

7. The method of claim 6, wherein obtaining the configuration information of the MTCH specifically comprises:

8. The method of claim 6, wherein the MTCH is specifically a single cell multicast transport channel, SC-MTCH;

the obtaining of the MTCH configuration information specifically includes:

receiving system information sent by a network side, acquiring configuration information of a single-cell multicast control channel (SC-MCCH) from the system information, and acquiring single-cell radio network temporary identifier (SC-RNTI) information from the configuration information of the SC-MCCH;

receiving a first Physical Downlink Control Channel (PDCCH) scrambled by the SC-RNTI, and acquiring configuration information of the SC-MCCH for scheduling and bearing broadcast control information from the first PDCCH;

receiving the SC-MCCH based on the configuration information of the SC-MCCH, and acquiring group scheduling identifier G-RNTI information from the SC-MCCH;

9. A broadcast transmission apparatus, comprising:

a first determining unit, configured to determine a type of a broadcast service currently needing to be transmitted;

10. A broadcast transmission apparatus, comprising:

a first acquiring unit, configured to acquire configuration information of a multicast transport channel, MTCH;

and a second obtaining unit, configured to receive the MTCH based on the MTCH configuration information, and obtain broadcast data information from the MTCH, where the broadcast service data information is the broadcast service data information that is determined to be sent by the network side according to the broadcast service type of the broadcast service and a preset threshold corresponding to a transmission resource that needs to be occupied for transmitting the broadcast service in a single timeslot.

11. A broadcast transmission apparatus, comprising:

a memory for storing program instructions;

a processor for invoking program instructions stored in said memory for executing the method of any of claims 1 to 8 in accordance with the obtained program.

12. A computer storage medium having computer-executable instructions stored thereon for causing a computer to perform the method of any one of claims 1 to 8.