CN115190435B

CN115190435B - Broadcast signal distribution method, system, medium and terminal for wide area and deep coverage

Info

Publication number: CN115190435B
Application number: CN202210589809.7A
Authority: CN
Inventors: 贺智桐; 彭克武; 宋健; 薛永林; 王军; 张超
Original assignee: Peng Cheng Laboratory
Current assignee: Peng Cheng Laboratory
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2023-06-06
Anticipated expiration: 2042-05-27
Also published as: CN115190435A

Abstract

The invention discloses a broadcast signal distribution method, a system, a medium and a terminal for wide area and deep coverage, wherein the method comprises the following steps: obtaining first broadcast information from a core network, converting the first broadcast information into a wide area broadcast signal with high spectral efficiency, and transmitting the wide area broadcast signal; obtaining second broadcast information from the core network, converting the second broadcast information into a cell broadcast signal with medium-low spectrum efficiency, and transmitting the cell broadcast signal; receiving the cell broadcast signal and the wide area broadcast signal, forwarding the cell broadcast signal and analyzing the wide area broadcast signal to obtain relay broadcast information, converting the relay broadcast information into relay broadcast signals generating medium-low spectral efficiency, and transmitting the relay broadcast signals; the broadcast signal distribution method can meet the wide area or depth coverage requirement of the broadcast signal to various terminals.

Description

Broadcast signal distribution method, system, medium and terminal for wide area and deep coverage

Technical Field

The present invention relates to the field of broadcast signal distribution, and in particular, to a broadcast signal distribution method, system, medium and terminal for wide area and deep coverage.

Background

Data traffic of modern communication networks presents an explosive growth, wherein the duty cycle of video services, in particular mobile video services, increases significantly. It is apparent that it is difficult to support the above-described explosively increasing data traffic merely by enhancing basic indexes of the communication network, such as frequency point multiplexing rate, spectrum utilization rate, and the like. Video services generally have the characteristic of high overlap ratio among wide-area users, namely, most users pay attention to few popular high-capacity contents, and the problems of network congestion and insufficient bandwidth caused by explosive growth of data traffic can be effectively relieved by pushing the contents in a broadcasting mode. Thus, the organic convergence of communication networks and broadcast networks is one of the important solutions facing the explosive growth of data traffic in modern communication networks, and further enables the facilitation of converged media services to various types of terminals.

Conventional digital television broadcast transmission systems typically employ a higher transmission tower or satellite transmission platform to provide wide-area broadcast high-power signal coverage, and are typically oriented to terminal devices such as rooftop antennas that have higher antenna gain and better reception conditions. The traditional mobile communication network has complex terminal type, possibly strong mobility, complex and diverse receiving environments, poor receiving conditions and low receiving antenna gain. Therefore, it is difficult to achieve deep coverage of broadcast signals to various terminals using only a large tower or satellite wide area broadcast network of a conventional digital terrestrial broadcast transmission system, or the like.

Disclosure of Invention

In view of the foregoing deficiencies of the prior art, an object of the present application is to provide a broadcast signal distribution method, system, medium and terminal for wide area and deep coverage, which aims to solve the problem that it is difficult to implement deep coverage of broadcast signals to multiple terminals in a conventional digital terrestrial broadcast transmission system.

To solve the above technical problem, a first aspect of an embodiment of the present application provides a broadcast signal distribution method with wide area and deep coverage, where the method includes:

the method comprises the steps that a wide area broadcasting base station module obtains first broadcasting information from a core network, converts the first broadcasting information into a wide area broadcasting signal with high spectral efficiency, and transmits the wide area broadcasting signal, wherein the first broadcasting information comprises service information of a composite area first broadcasting service, wide area broadcasting signaling information of the composite area first broadcasting service, service information of a composite local first broadcasting service and wide area broadcasting signaling information of the composite local first broadcasting service;

the cell broadcast base station module obtains second broadcast information from a core network, converts the second broadcast information into a cell broadcast signal with medium-low spectral efficiency, and transmits the cell broadcast signal, wherein the second broadcast information comprises service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service and cell broadcast signaling information of the local second broadcast service;

The relay broadcast base station module receives the cell broadcast signal and the wide area broadcast signal, forwards the cell broadcast signal and analyzes the wide area broadcast signal to obtain relay broadcast information, converts the relay broadcast information into a relay broadcast signal generating middle-low spectral efficiency, and transmits the relay broadcast signal;

the terminal module selects a received broadcast signal according to the terminal type and the receiving condition, demodulates and decodes the received broadcast signal to obtain a broadcast service to be received, wherein the broadcast signal comprises the wide area broadcast signal or the cell broadcast signal or the relay broadcast signal.

As a further improved technical solution, the wide area broadcasting base module obtains first broadcasting information from a core network, converts the first broadcasting information into a wide area broadcasting signal with high spectral efficiency, and transmits the wide area broadcasting signal includes:

the wide area broadcast base station module obtains sub-channel information of a wide area broadcast physical layer and first broadcast information from a core network, wherein the first broadcast information comprises service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of a composite local first broadcast service and wide area broadcast signaling information of the composite local first broadcast service, the service information of the composite area first broadcast service comprises service information of the area first broadcast service and relay broadcast signaling information of the area first broadcast service, and the service information of the composite local first broadcast service comprises service information of the local first broadcast service and relay broadcast signaling information of the local first broadcast service;

The wide area broadcast base station module allocates a physical layer sub-channel corresponding to a composite area for the first broadcast service of the composite area according to the wide area broadcast signaling information and the wide area broadcast physical layer sub-channel information of the first broadcast service of the composite area, and allocates a physical layer sub-channel corresponding to the composite local for the first broadcast service of the composite area according to the wide area broadcast signaling information and the wide area broadcast physical layer sub-channel information of the first broadcast service of the composite local;

the wide-area broadcasting base station module generates a first wide-area broadcasting signal with high spectral efficiency according to the wide-area broadcasting signaling information of the first broadcasting service of the composite area and a physical layer sub-channel corresponding to the composite area, and generates a second wide-area broadcasting signal with high spectral efficiency according to the wide-area broadcasting signaling information of the first broadcasting service of the composite local and the physical layer sub-channel corresponding to the composite local;

the wide-area broadcast base station module transmits the first wide-area broadcast signal and the second wide-area broadcast signal.

As a further improved technical solution, the cell broadcast base station module obtains second broadcast information from a core network, converts the second broadcast information into a cell broadcast signal with middle-low spectral efficiency, and transmits the cell broadcast signal includes:

The cell broadcast base station module obtains cell broadcast physical layer sub-channel information and second broadcast information from a core network, wherein the second broadcast information comprises service information of regional second broadcast service, cell broadcast signaling information of regional second broadcast service, service information of local second broadcast service and cell broadcast signaling information of local second broadcast service;

the cell broadcast base station module allocates a physical layer sub-channel corresponding to a region for the region second broadcast service according to the cell broadcast signaling information and the cell broadcast physical layer sub-channel information of the region second broadcast service, and allocates a local corresponding physical layer sub-channel for the local second broadcast service according to the cell broadcast signaling information and the cell broadcast physical layer sub-channel information of the local second broadcast service;

the cell broadcast base station module generates a first cell broadcast signal with middle-low spectral efficiency according to the cell broadcast signaling information of the regional second broadcast service and the physical layer sub-channel corresponding to the region, and generates a second cell broadcast signal with middle-low spectral efficiency according to the cell broadcast signaling information of the local second broadcast service and the physical layer sub-channel corresponding to the local;

The cell broadcast base station module transmits the first cell broadcast signal and the second cell broadcast signal.

As a further improved technical solution, the relay broadcast base station module receives the cell broadcast signal and the wide area broadcast signal, forwards the cell broadcast signal and parses the wide area broadcast signal to obtain relay broadcast information, converts the relay broadcast information into a relay broadcast signal generating middle-low spectral efficiency, and transmits the relay broadcast signal, including:

the relay broadcast base station module receives the cell broadcast signal and the wide area broadcast signal, and directly forwards the cell broadcast signal or decodes and forwards the cell broadcast signal;

the relay broadcast base station module obtains relay broadcast physical layer sub-channel information;

the relay broadcast base station module analyzes the wide area broadcast signal to obtain service information of a regional third broadcast service, relay broadcast signaling information of the regional third broadcast service, service information of a local third broadcast service and relay broadcast signaling information of the local third broadcast service;

the relay broadcast base station module allocates a physical layer sub-channel corresponding to an area for the area third broadcast service according to the relay broadcast signaling information and the relay broadcast physical layer sub-channel information of the area third broadcast service, and allocates a local corresponding physical layer sub-channel for the local third broadcast service according to the relay broadcast signaling information and the relay broadcast physical layer sub-channel information of the local third broadcast service;

The relay broadcast base station module generates a first relay broadcast signal with middle-low spectral efficiency according to the relay broadcast signaling information of the regional third broadcast service and the physical layer sub-channel corresponding to the region, and generates a second relay broadcast signal with middle-low spectral efficiency according to the relay broadcast signaling information of the local third broadcast service and the physical layer sub-channel corresponding to the local;

the relay broadcast base station module transmits the first relay broadcast signal and the second relay broadcast signal.

As a further improved technical solution, the terminal module selects a received broadcast signal according to a terminal type and a receiving condition, demodulates and decodes the received broadcast signal, and obtains a broadcast service to be received, including:

the terminal module selects a received broadcast signal according to the type and the receiving condition of the terminal, wherein the type of the terminal comprises a fixed terminal and a mobile terminal, the receiving condition comprises a good receiving condition, a general receiving adjustment and a bad receiving condition, and the broadcast signal comprises the wide area broadcast signal, the cell broadcast signal or the relay broadcast signal;

and the terminal module demodulates and decodes the received broadcast signals to obtain the broadcast service to be received.

As a further improvement technical scheme, the physical layer sub-channels are respectively subjected to orthogonal and non-orthogonal segmentation according to two dimensions of terminal-oriented type and priority of bearing broadcast signals.

As a further improved technical scheme, the wide-area broadcast signaling information of the first broadcast service in the composite area includes synchronization information of a single-frequency network of the first broadcast service in the composite area, and the wide-area broadcast base station module and other wide-area broadcast base station modules in the service range of the first broadcast service form a single-frequency network according to the synchronization information of the single-frequency network of the first broadcast service in the composite area;

the cell broadcast signaling information of the regional second broadcast service comprises the synchronization information of the single-frequency network of the regional second broadcast service, and the cell broadcast base station module and other cell broadcast base station modules in the service range of the second broadcast service form a single-frequency network according to the synchronization information of the single-frequency network of the regional second broadcast service;

the relay broadcast signaling information of the regional third broadcast service comprises synchronization information of a single frequency network of the regional third broadcast service, and the relay broadcast base station module forms a single frequency network with other relay broadcast base station modules and cell broadcast base station modules in a service range of the third broadcast service according to the synchronization information of the single frequency network of the regional third broadcast service.

As a further improved technical scheme, the wide-area broadcast signaling information of the composite area first broadcast service further comprises configuration information of a wide-area broadcast physical layer subchannel of the composite area first broadcast service, and the wide-area broadcast signaling information of the composite local first broadcast service comprises configuration information of a wide-area broadcast physical layer subchannel of the composite local first broadcast service;

the cell broadcast signaling information of the regional second broadcast service further comprises cell broadcast physical layer sub-channel configuration information of the regional second broadcast service, and the cell broadcast signaling information of the local second broadcast service comprises cell broadcast physical layer sub-channel configuration information of the local second broadcast service;

the relay broadcast signaling information of the regional third broadcast service further includes relay broadcast physical layer subchannel configuration information of the regional third broadcast service, and the signaling information of the local third broadcast service includes relay broadcast physical layer subchannel configuration information of the local third broadcast service.

As a further improved technical scheme, the wide area broadcasting base station module, the relay broadcasting base station module and the terminal module are heterogeneous and networked, and the relay broadcasting base station module can obtain different local broadcasting services and regional broadcasting services from wide area broadcasting signals transmitted by the wide area broadcasting base station module, select corresponding local broadcasting services and/or regional broadcasting services according to requirements to convert the local broadcasting services and/or regional broadcasting services into corresponding relay broadcasting information, convert the corresponding relay broadcasting information into corresponding relay broadcasting signals, and transmit the corresponding relay broadcasting signals.

A second aspect of embodiments of the present application provides a broadcast signal distribution system for wide area and deep coverage, including:

a wide area broadcast base station module, configured to obtain first broadcast information from a core network, convert the first broadcast information into a wide area broadcast signal with high spectral efficiency, and transmit the wide area broadcast signal, where the first broadcast information includes service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of the composite local first broadcast service, and wide area broadcast signaling information of the composite local first broadcast service;

a cell broadcast base station module, configured to obtain second broadcast information from a core network, convert the second broadcast information into a cell broadcast signal with middle-low spectral efficiency, and transmit the cell broadcast signal, where the second broadcast information includes service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service, and cell broadcast signaling information of the local second broadcast service;

the relay broadcast base station module can be in signal connection with the wide area broadcast base station module and the cell broadcast base station module, and is used for receiving the cell broadcast signal and the wide area broadcast signal, forwarding the cell broadcast signal and analyzing the wide area broadcast signal to obtain relay broadcast information, converting the relay broadcast information into relay broadcast signals for generating middle-low spectral efficiency, and transmitting the relay broadcast signals;

The terminal module is in signal connection with the wide area broadcasting base station module, the cell broadcasting base station module and the relay broadcasting base station module, and is used for selecting a received broadcasting signal according to a terminal type and a receiving condition, demodulating and decoding the received broadcasting signal to obtain a broadcasting service to be received, wherein the broadcasting signal comprises the wide area broadcasting signal, the cell broadcasting signal or the relay broadcasting signal.

As a further improved technical scheme, the wide area broadcast base station module can form a single frequency network with other wide area broadcast base station modules in the broadcast service range, the cell broadcast base station module can form a single frequency network with other cell broadcast base station modules in the broadcast service range, and the relay broadcast base station module can form a single frequency network with other relay broadcast base station modules and cell broadcast base station modules in the broadcast service range.

A third aspect of the embodiments provides a computer readable storage medium storing one or more programs executable by one or more processors to implement steps in a wide area and deep coverage broadcast signal distribution method as described in any of the above.

A fourth aspect of the present embodiment provides a terminal device, including: a processor, a memory, and a communication bus; the memory has stored thereon a computer readable program executable by the processor;

the communication bus realizes connection communication between the processor and the memory;

the processor, when executing the computer readable program, performs the steps in the wide area and deep coverage broadcast signal distribution method as described in any of the above.

The beneficial effects are that: the wide area and deep coverage broadcast signal distribution method of the present invention includes: obtaining first broadcast information from a core network, converting the first broadcast information into a wide area broadcast signal with high spectral efficiency, and transmitting the wide area broadcast signal; obtaining second broadcast information from a core network, converting the second broadcast information into a cell broadcast signal with medium-low spectral efficiency, and transmitting the cell broadcast signal; receiving the cell broadcast signal and the wide area broadcast signal, forwarding the cell broadcast signal and analyzing the wide area broadcast signal to obtain relay broadcast information, converting the relay broadcast information into relay broadcast signals with medium-low spectral efficiency, and transmitting the relay broadcast signals; selecting a received broadcast signal according to the terminal type and the receiving condition, demodulating and decoding the received broadcast signal, and obtaining a broadcast service to be received; the wide area broadcasting base station module in the system provides wide area coverage of the broadcasting signals, the cell broadcasting base station module and the relay broadcasting base station module provide deep coverage of the broadcasting signals, and the wide area or deep coverage requirement of the broadcasting signals on various terminals can be met.

Drawings

Fig. 1 is a flowchart of a broadcast signal distribution method of wide area and deep coverage of the present invention.

Fig. 2 is a schematic structural diagram of a terminal device provided by the present invention.

Fig. 3 is a block diagram of the wide area and deep coverage broadcast signal distribution system of the present invention.

Fig. 4 is a schematic diagram of a segmentation method according to the present invention.

Fig. 5 is a schematic diagram of broadcast signal coverage of each base station module according to the method provided by the present invention.

Fig. 6 is a schematic coverage of broadcast services S1, S2, S3 according to the method provided by the present invention.

Fig. 7 is a schematic diagram of a bearer broadcast service according to the method provided by the present invention.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The inventors have found that the following problems exist in the prior art:

(1) While the physical layer technology of the conventional cellular mobile communication system is generally oriented to a unicast communication scenario of bidirectional interaction, in a broadcast scenario, it is difficult to implement adaptive transmission and signaling backhaul for a large number of end users. Therefore, it is difficult for the physical layer transmission technology of the conventional cellular mobile communication system to support the demands of high spectral efficiency, high reliability and large capacity of broadcast signal transmission. In addition, a coverage area of a mobile communication base station in a conventional cellular mobile communication system is limited, and wide area efficient coverage of a broadcast signal to various terminals cannot be achieved.

(2) For broadcasting needs in mobile communication, existing 5G broadcasting technologies include LTE-based 5G terrestrial broadcasting (enTV) and NR-based 5G multicast broadcasting service (NR-MBS). In the existing 5G broadcasting technology, the fused heterogeneous broadcasting network of the large broadcasting tower and the small broadcasting tower is not considered, but only the large broadcasting tower networking, the small broadcasting tower networking or the large tower and small tower isomorphic networking is considered, so that the requirements of wide-area efficient coverage and deep coverage of the broadcasting signals are difficult to be considered, and the requirement of organic fusion of a communication network and the broadcasting network is difficult to be met.

In order to solve the above problems, various non-limiting embodiments of the present application are described in detail below with reference to the accompanying drawings.

The embodiment provides a broadcast signal distribution method with wide area and deep coverage, which comprises the following steps:

s1, the wide area broadcasting base station module obtains first broadcasting information from a core network, converts the first broadcasting information into a wide area broadcasting signal with high spectral efficiency, and transmits the wide area broadcasting signal, wherein the first broadcasting information comprises service information of a composite area first broadcasting service, wide area broadcasting signaling information of the composite area first broadcasting service, service information of a composite local first broadcasting service and wide area broadcasting signaling information of the composite local first broadcasting service;

wherein the wide area broadcasting base station module obtains first broadcasting information from a core network, converts the first broadcasting information into a wide area broadcasting signal with high spectral efficiency, and transmits the wide area broadcasting signal, comprising the steps of:

s101, the wide area broadcast base station module obtains sub-channel information of a wide area broadcast physical layer and first broadcast information from a core network, wherein the first broadcast information comprises service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of the composite local first broadcast service and wide area broadcast signaling information of the composite local first broadcast service, wherein the service information of the composite area first broadcast service comprises service information of the area first broadcast service and relay broadcast signaling information of the area first broadcast service, the service information of the composite local first broadcast service comprises service information of the local first broadcast service and relay broadcast signaling information of the local first broadcast service, the wide area broadcast signaling information of the composite area first broadcast service further comprises configuration information of the sub-channel of the wide area broadcast physical layer of the composite area first broadcast service, and the wide area broadcast signaling information of the composite local first broadcast service comprises configuration information of the wide area broadcast physical layer of the composite local first broadcast service;

S102, the wide area broadcasting base station module allocates a physical layer sub-channel corresponding to a composite area for the first broadcasting service of the composite area according to the wide area broadcasting signaling information and the wide area broadcasting physical layer sub-channel information of the first broadcasting service of the composite area, and allocates a physical layer sub-channel corresponding to the composite local for the first broadcasting service of the composite area according to the wide area broadcasting signaling information and the wide area broadcasting physical layer sub-channel information of the first broadcasting service of the composite local;

s103, the wide area broadcasting base station module generates a first wide area broadcasting signal with high spectral efficiency according to the wide area broadcasting signaling information of the first broadcasting service of the composite area and the physical layer sub-channel corresponding to the composite area, and generates a second wide area broadcasting signal with high spectral efficiency according to the wide area broadcasting signaling information of the first broadcasting service of the composite local and the physical layer sub-channel corresponding to the composite local;

s104, the wide area broadcasting base station module transmits the first wide area broadcasting signal and the second wide area broadcasting signal.

Specifically, the wide-area broadcast base station module may obtain the information of the wide-area broadcast physical layer sub-channel according to the fixed configuration of the base station, or may obtain the information of the wide-area broadcast physical layer sub-channel from the core network, where the broadcast information may be first broadcast service information, second broadcast service information, third broadcast service information, etc., and the first broadcast service information is taken as an example to describe the present embodiment, the wide-area broadcast base station module allocates the physical layer sub-channel corresponding to the composite area first broadcast service according to the wide-area broadcast signaling information and the wide-area broadcast physical layer sub-channel information of the composite area first broadcast service, allocates the physical layer sub-channel corresponding to the composite area for the composite local first broadcast service according to the wide-area broadcast signaling information and the wide-area broadcast physical layer sub-channel information of the composite local first broadcast service, specifically allocates the physical layer sub-channel corresponding to the wide-area broadcast physical layer sub-channel corresponding to the local broadcast physical layer sub-channel corresponding to the composite local broadcast physical layer sub-channel corresponding to the local broadcast physical layer information of the local first broadcast service;

And then according to the wide-area broadcast signaling information of the first broadcast service of the composite area and the corresponding physical layer sub-channel of the composite area, the service information of the first broadcast service of the composite area is coded, modulated and framed according to a wide-area broadcast protocol, corresponding first wide-area broadcast signals are generated and overlapped, high-spectrum-efficiency first wide-area broadcast signals are generated, the high-spectrum-efficiency first wide-area broadcast signals are transmitted, according to the wide-area broadcast signaling information of the first broadcast service of the composite local area and the corresponding physical layer sub-channel of the composite local area, the service information of the first broadcast service of the composite local area is coded, modulated and framed according to the wide-area broadcast protocol, corresponding second wide-area broadcast signals are generated and overlapped, high-spectrum-efficiency second wide-area broadcast signals are generated, and high-spectrum-efficiency second wide-area broadcast signals are transmitted.

S2, the cell broadcast base station module obtains second broadcast information from a core network, converts the second broadcast information into a cell broadcast signal with medium-low spectral efficiency, and transmits the cell broadcast signal, wherein the second broadcast information comprises service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service and cell broadcast signaling information of the local second broadcast service;

The cell broadcast base station module obtains second broadcast information from a core network, converts the second broadcast information into a cell broadcast signal with medium-low spectral efficiency, and transmits the cell broadcast signal, and the method comprises the following steps:

s201, the cell broadcast base station module obtains cell broadcast physical layer sub-channel information and second broadcast information from a core network, wherein the second broadcast information comprises service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service and cell broadcast signaling information of the local second broadcast service, the cell broadcast signaling information of the regional second broadcast service also comprises cell broadcast physical layer sub-channel configuration information of the regional second broadcast service, and the cell broadcast signaling information of the local second broadcast service comprises cell broadcast physical layer sub-channel configuration information of the local second broadcast service;

s202, the district broadcast base station module distributes physical layer sub-channels corresponding to the district second broadcast service for the district second broadcast service according to district broadcast signaling information and district broadcast physical layer sub-channel information of the district second broadcast service, and distributes local corresponding physical layer sub-channels for the local second broadcast service according to district broadcast signaling information and district broadcast physical layer sub-channel information of the local second broadcast service;

S203, the cell broadcast base station module generates a first cell broadcast signal with middle-low spectral efficiency according to the cell broadcast signaling information of the regional second broadcast service and the physical layer sub-channel corresponding to the region, and generates a second cell broadcast signal with middle-low spectral efficiency according to the cell broadcast signaling information of the local second broadcast service and the physical layer sub-channel corresponding to the local;

s204, the cell broadcast base station module transmits the first cell broadcast signal and the second cell broadcast signal.

Specifically, the cell broadcast base station module may obtain the cell broadcast physical layer subchannel information according to the base station fixed configuration, or obtain the cell broadcast physical layer subchannel information from the core network, and the cell broadcast base station module may obtain the broadcast information from the core network, where the broadcast information may be first broadcast service information, second broadcast service information, third broadcast service information, and the like, and the second broadcast service information obtained by the cell broadcast base station module is described below by way of example with reference to the second broadcast service information, and compared with the first broadcast service information obtained by the wide area broadcast base station module, the second broadcast service information lacks information related to relay broadcast, and specifically lacks relay broadcast signaling information of regional broadcast service and relay broadcast signaling information of local broadcast service.

The cell broadcast base station module allocates a physical layer subchannel corresponding to a region for a region second broadcast service according to the cell broadcast signaling information and the cell broadcast physical layer subchannel information of the region second broadcast service, allocates a local corresponding physical layer subchannel for the local second broadcast service according to the cell broadcast signaling information and the cell broadcast physical layer subchannel information of the local second broadcast service, specifically, allocates a physical layer subchannel corresponding to the region for the region second broadcast service according to the matching of the cell broadcast physical layer subchannel configuration information and the cell broadcast physical layer subchannel information of the region second broadcast service, and allocates a physical layer subchannel corresponding to the region for the region second broadcast service according to the matching of the cell broadcast physical layer subchannel configuration information and the cell broadcast physical layer subchannel information of the local second broadcast service;

and then coding, modulating and framing the service information of the second broadcast service of the composite area according to a cell broadcast protocol according to the cell broadcast signaling information of the second broadcast service of the composite area and a physical layer sub-channel corresponding to the composite area, generating and superposing corresponding first cell broadcast signals, generating middle-low spectrum effect first cell broadcast signals, transmitting the middle-low spectrum effect first cell broadcast signals, coding, modulating and framing the service information of the second broadcast service of the composite area according to the cell broadcast signaling information of the second broadcast service of the composite area and the physical layer sub-channel corresponding to the composite area, generating and superposing corresponding second cell broadcast signals, generating middle-low spectrum effect second cell broadcast signals, and transmitting the middle-low spectrum effect second cell broadcast signals.

S3, the relay broadcast base station module receives the cell broadcast signal and the wide area broadcast signal, forwards the cell broadcast signal and analyzes the wide area broadcast signal to obtain relay broadcast information, converts the relay broadcast information into relay broadcast signals with middle-low spectral efficiency, and transmits the relay broadcast signals;

the relay broadcast base station module receives the cell broadcast signal and the wide area broadcast signal, forwards the cell broadcast signal and analyzes the wide area broadcast signal to obtain relay broadcast information, converts the relay broadcast information into a relay broadcast signal generating middle-low spectral efficiency, and transmits the relay broadcast signal, and the relay broadcast signal comprises the following steps:

s301, the relay broadcast base station module receives the cell broadcast signal and the wide area broadcast signal, and the relay broadcast base station module directly forwards the cell broadcast signal or decodes and forwards the cell broadcast signal;

s302, the relay broadcast base station module obtains relay broadcast physical layer sub-channel information;

s303, the relay broadcast base station module analyzes and obtains service information of a regional third broadcast service, relay broadcast signaling information of the regional third broadcast service, service information of a local third broadcast service and relay broadcast signaling information of the local third broadcast service from the wide area broadcast signal, wherein the relay broadcast signaling information of the regional third broadcast service also comprises relay broadcast physical layer sub-channel configuration information of the regional third broadcast service, and the signaling information of the local third broadcast service comprises relay broadcast physical layer sub-channel configuration information of the local third broadcast service;

Specifically, after receiving a first cell broadcast signal and a second cell broadcast signal sent by a cell broadcast base station module, a relay broadcast base station module directly selects to forward or decode and forward the cell broadcast signals;

the relay broadcast base station module can obtain relay broadcast physical layer sub-channel information according to base station fixed configuration, and can also obtain relay broadcast physical layer sub-channel information from wide area broadcast signals transmitted by the wide area broadcast base station module, after receiving a first wide area broadcast signal and a second wide area broadcast signal transmitted by the wide area broadcast base station module, the relay broadcast base station module analyzes relay broadcast signaling information of a local first broadcast service from the first wide area broadcast signal, and analyzes relay broadcast signaling information of the local first broadcast service from the second wide area broadcast signal, wherein the relay broadcast signaling information of the local first broadcast service comprises service information of a local third broadcast service and relay broadcast signaling information of the local third broadcast service, and the relay broadcast signaling information of the local first broadcast service comprises service information of the local third broadcast service and relay broadcast signaling information of the local third broadcast service;

The relay broadcast base station module allocates a physical layer sub-channel corresponding to an area for the area third broadcast service according to the relay broadcast signaling information and the relay broadcast physical layer sub-channel information of the area third broadcast service, allocates a physical layer sub-channel corresponding to the local third broadcast service according to the relay broadcast signaling information and the relay broadcast physical layer sub-channel information of the local third broadcast service, specifically, allocates a physical layer sub-channel corresponding to the area for the area third broadcast service according to the relay broadcast physical layer sub-channel configuration information and the relay broadcast physical layer sub-channel information of the area third broadcast service, and allocates a physical layer sub-channel corresponding to the local third broadcast service according to the relay broadcast physical layer sub-channel configuration information and the relay broadcast physical layer sub-channel information of the local third broadcast service;

the relay broadcast base station module encodes, modulates and frames the service information of the regional third broadcast service according to a relay broadcast protocol according to the relay broadcast signaling information of the regional third broadcast service and the physical layer sub-channel corresponding to the region, generates corresponding first relay broadcast signals and superimposes the first relay broadcast signals with middle-low spectral efficiency, transmits the first relay broadcast signals with middle-low spectral efficiency, encodes, modulates and frames the service information of the local third broadcast service according to the relay broadcast protocol according to the relay broadcast signaling information of the local third broadcast service and the physical layer sub-channel corresponding to the local, generates corresponding second relay broadcast signals and superimposes the second relay broadcast signals with middle-low spectral efficiency, and transmits the second relay broadcast signals with middle-low spectral efficiency.

S4, the terminal module selects a received broadcast signal according to the terminal type and the receiving condition, demodulates and decodes the received broadcast signal to obtain a broadcast service to be received, wherein the broadcast signal comprises the wide area broadcast signal or the cell broadcast signal or the relay broadcast signal.

The terminal module selects a received broadcast signal according to a terminal type and a receiving condition, demodulates and decodes the received broadcast signal, and obtains a broadcast service to be received, wherein the method comprises the following steps:

s401, the terminal module selects a received broadcast signal according to the type and the receiving condition of the terminal, wherein the type of the terminal comprises a fixed terminal and a mobile terminal, the receiving condition comprises a good receiving condition, a general receiving adjustment and a bad receiving condition, and the broadcast signal comprises the wide area broadcast signal, the cell broadcast signal or the relay broadcast signal;

and S402, the terminal module demodulates and decodes the received broadcast signals to obtain the broadcast service to be received.

The broadcast signal distribution method based on the wide area and the deep coverage is further illustrated in the following specific details of practical application of the present embodiment:

As shown in fig. 5, the physical layer sub-channels are respectively divided into orthogonal and non-orthogonal segments according to two dimensions of terminal-oriented type and priority of carrying broadcast signals.

Specifically, the terminal-oriented type is further divided into a fixed terminal and a mobile terminal, the priority of the broadcast-bearing signal is further divided into a high priority and a low priority, the physical layer sub-channel of the terminal-oriented type dimension is subjected to orthogonal division according to time-frequency resources, different physical layer signal frame structure parameters (for example, the guard interval and the subcarrier interval of an OFDM frame are different) are adopted, and the physical layer sub-channel of the broadcast-bearing signal priority dimension is subjected to non-orthogonal division according to a non-orthogonal multiplexing technology.

The wide-area broadcasting base station module, the cell broadcasting base station module and the relay broadcasting base station module acquire terminal-oriented type and broadcasting signal priority information of each broadcasting service according to signaling information of each broadcasting service; and respectively distributing corresponding physical layer sub-channels for each broadcast service according to the segmentation modes of the wide-area broadcast physical layer sub-channels, the cell broadcast physical layer sub-channels and the relay broadcast physical layer sub-channels and the terminal-oriented type and broadcast signal priority information of each broadcast service, wherein the regional broadcast service has higher priority than the local broadcast service.

According to the division manner of the physical layer sub-channels, the broadcast signals carried by the physical layer sub-channels may further have the following additional features: broadcast signals carried by physical layer sub-channels facing the fixed terminal generally have higher spectral efficiency than broadcast signals carried by physical layer sub-channels facing the mobile terminal; the high priority broadcast signals carried by the physical layer sub-channels typically have a greater equivalent transmit power at the transmitting end than the low priority broadcast signals carried by the physical layer sub-channels.

According to the division mode of the physical layer channel, the process that the terminal module receives the broadcast signal and obtains the broadcast service to be received through demodulation and decoding is further divided into the following steps:

1) The terminal module receives either the wide area broadcast signal or the cell broadcast signal or the relay broadcast signal or the cell broadcast signal forwarded by the relay broadcast base station module;

2) The fixed terminal obtains a broadcast signal borne by a physical layer sub-channel facing the fixed terminal from the received broadcast signal, and the mobile terminal obtains the broadcast signal borne by the physical layer sub-channel facing the mobile terminal from the received broadcast signal;

3) A terminal with excellent receiving conditions sequentially processes broadcast signals with high priority and low priority through a serial interference elimination technology or a multi-stage decoding technology, and further demodulates and decodes the broadcast signals to obtain broadcast services carried by the broadcast signals; terminals with general or bad receiving conditions directly process high-priority broadcast signals through a single-stage decoding technology, and further demodulate and decode to obtain broadcast services carried by the broadcast signals.

Specifically, taking a broadcast signal distribution flow carrying a broadcast service S in a certain area as an example, it is further described that the broadcast signal distribution network and the system device can implement wide area and deep coverage of a broadcast signal:

As shown in fig. 6, the wide area broadcasting base station module obtains service information of the composite area broadcasting service S and wide area broadcasting signaling information of the composite area broadcasting service S from the core network; the service information of the composite regional broadcast service S comprises service information of the regional broadcast service S and relay broadcast signaling information of the regional broadcast service S; the wide area broadcast signaling information of the composite area broadcast service S comprises configuration information of a corresponding wide area broadcast physical layer sub-channel of the composite area broadcast service S and synchronization information of a single frequency network; according to the synchronous information of the corresponding single-frequency network of the composite regional broadcast service S, the wide-area broadcast base station module and other wide-area broadcast base station modules in the service range of the regional broadcast service S form a single-frequency network;

the cell broadcasting base station module obtains service information of the regional broadcasting service S and cell broadcasting signaling information of the regional broadcasting service S from the core network; the cell broadcast signaling information of the regional broadcast service S comprises configuration information of a corresponding cell broadcast physical layer sub-channel of the regional broadcast service S and synchronization information of a single frequency network; according to the synchronous information of the corresponding single-frequency network of the regional broadcast service S, the cell broadcast base station module forms a single-frequency network with other cell broadcast base station modules and relay broadcast base station modules in the service range of the regional broadcast service S;

The relay broadcast base station module obtains a composite regional broadcast service S from the wide-area broadcast signals transmitted by the wide-area broadcast base station module, and analyzes the service information of the regional broadcast service S and the relay broadcast signaling information of the regional broadcast service S; the relay broadcast signaling information of the regional broadcast service S includes configuration information of a corresponding relay broadcast physical layer sub-channel of the regional broadcast service S and synchronization information of the single frequency network; according to the synchronous information of the corresponding single-frequency network of the regional broadcast service S, the relay broadcast base station module forms a single-frequency network with other cell broadcast base station modules and relay broadcast base station modules in the service range of the regional broadcast service S;

in the above example:

1) A plurality of wide area broadcasting base station modules in the service range of the regional broadcasting service S form a single-frequency network, and a cell broadcasting base station module and a relay broadcasting base station module in the service range of the regional broadcasting service S form another single-frequency network;

2) Broadcast signals transmitted by the wide-area broadcast base station module have the characteristics of high spectral efficiency and wide coverage, but the coverage rate of terminals in the coverage range is relatively low, the deep coverage of the broadcast signals is difficult to realize, and the coverage rate of terminals with general or bad receiving conditions such as handheld mobile terminals is low;

3) The broadcast signals transmitted by the cell broadcast base station module have lower spectral efficiency, the coverage area is far smaller than that of the wide-area broadcast base station module, but the coverage area of terminals in the coverage area is relatively higher, so that the deep coverage of the broadcast signals can be realized, and the coverage area of terminals with general or bad receiving conditions such as handheld mobile terminals is higher; the cell broadcast base station module may be a mobile communication base station, and may support unicast or multicast services at the same time; preferably, the cell broadcast base station module is a 5G mobile communication base station; the cell broadcast base station may also complement the reception and forwarding of the wide-area broadcast signal transmitted by the wide-area broadcast base station to achieve deep coverage of the wide-area broadcast signal.

4) The relay broadcast base station module analyzes the wide area broadcast signals transmitted by the wide area broadcast base station to obtain service information of regional or local broadcast service and relay broadcast signaling information, which is equivalent to connecting a virtual core network; broadcast signals transmitted by the relay broadcast base station module have lower spectral efficiency, the coverage area is smaller than that of the wide-area broadcast base station module, but the coverage area of terminals in the coverage area is relatively higher, and the coverage area of terminals with general or bad receiving conditions such as handheld mobile terminals is higher; the relay broadcast base station module can further realize the deep coverage of the terminal in the coverage edge or blind area of the cell broadcast base station module, and further realize the deep coverage of the broadcast signal.

Therefore, the broadcast signal distribution system and the broadcast signal distribution method with wide area and depth coverage can simultaneously consider the wide area and the depth coverage of the broadcast signals.

As a further improved technical scheme, the wide area broadcast base station module and the relay broadcast base station module perform heterogeneous networking, and the relay broadcast base station module can obtain different local broadcast services and regional broadcast services from wide area broadcast signals transmitted by the wide area broadcast base station module, select corresponding local broadcast services and/or regional broadcast services according to requirements to convert the local broadcast services and/or regional broadcast services into corresponding relay broadcast information, convert the corresponding relay broadcast information into corresponding relay broadcast signals, and transmit the corresponding relay broadcast signals.

Specifically, the following only considers the broadcast signal distribution network formed by the wide area broadcast base station module and the relay broadcast base station module, and the following exemplifies the signal specific distribution process of the broadcast signals of the bearing area broadcast service S1 and the local broadcast services S2 and S3 among the wide area broadcast base station module, the relay broadcast base station module and the terminal module:

as shown in fig. 7, the wide area broadcast base station module K1 obtains service information of the composite local broadcast service S1, the composite local broadcast service S2, and the composite local broadcast service S3, and wide area broadcast signaling information of the composite local broadcast service S1, the composite local broadcast service S2, and the composite local broadcast service S3 from the core network; the service information of the composite regional broadcast service S1 comprises the service information of the regional broadcast service S1 and the relay broadcast signaling information of the regional broadcast service S1, the composite local broadcast service S2 comprises the service information of the local broadcast service S2 and the relay broadcast signaling information of the local broadcast service S2, and the service information of the composite local broadcast service S3 comprises the service information of the local broadcast service S3 and the relay broadcast signaling information of the local broadcast service S3; the wide-area broadcasting base station module K1 generates and transmits a wide-area broadcasting signal with high spectral efficiency to bear a composite regional broadcasting service S1, a composite local broadcasting service S2 and a composite local broadcasting service S3;

The relay broadcast base station modules RL1-RL2 acquire a composite regional broadcast service S1 and a composite local broadcast service S2 from wide-area broadcast signals transmitted by the wide-area broadcast base station modules, acquire service information of the regional broadcast service S1 and relay broadcast signaling information of the regional broadcast service S1 by analyzing the service information of the composite regional broadcast service S1, and acquire service information of the local broadcast service S2 and relay broadcast signaling information of the local broadcast service S2 by analyzing the service information of the composite local broadcast service S2; the relay broadcast base station modules RL1-RL2 generate and transmit wide area broadcast signals with medium-low spectral efficiency, and bear regional broadcast service S1 and local broadcast service S2;

the relay broadcast base station modules RL3-RL4 acquire a composite regional broadcast service S1 and a composite local broadcast service S3 from wide-area broadcast signals transmitted by the wide-area broadcast base station modules, acquire service information of the regional broadcast service S1 and relay broadcast signaling information of the regional broadcast service S1 by analyzing the service information of the composite regional broadcast service S1, and acquire service information of the local broadcast service S3 and relay broadcast signaling information of the local broadcast service S3 by analyzing the service information of the composite local broadcast service S3; the relay broadcast base station modules RL3-RL4 generate and transmit wide area broadcast signals with medium-low spectral efficiency, and bear regional broadcast service S1 and local broadcast service S3;

The relay broadcast base station module RL5 obtains a composite regional broadcast service S1 from the wide-area broadcast signals transmitted by the wide-area broadcast base station module, analyzes service information of the regional broadcast service S1 and relay broadcast signaling information of the regional broadcast service S1 from service information of the composite regional broadcast service S1, and the relay broadcast base station module RL5 generates and transmits the wide-area broadcast signals with middle-low spectral efficiency and only carries the regional broadcast service S1;

in summary, the relay broadcast base station module may obtain service information and relay broadcast signaling information of each broadcast service from each composite broadcast service carried by the wide area broadcast signal transmitted by the wide area broadcast base station module, and select the service information and relay broadcast signaling information of the regional broadcast service and the local broadcast service to be broadcast according to the requirements, so as to generate and transmit the relay broadcast signal carrying the regional broadcast service and the local broadcast service to be broadcast. Therefore, the broadcast signal distribution system and the broadcast signal distribution method for wide area and deep coverage realize wide area and deep coverage of broadcast signals bearing regional broadcast services and broadcast signals bearing local broadcast services simultaneously, realize differentiated services of fused media to different types of terminals with different receiving conditions, realize wide area coverage and deep coverage of broadcast signals by heterogeneous networking of the wide area broadcast base station module and the relay broadcast base station module, and support broadcast service reception of different terminal modules.

As shown in fig. 3, a broadcast signal distribution system with wide area and deep coverage according to an embodiment of the present application includes:

a wide area broadcast base station module 1, configured to obtain first broadcast information from a core network, convert the first broadcast information into a wide area broadcast signal with high spectral efficiency, and transmit the wide area broadcast signal, where the first broadcast information includes service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of the composite local first broadcast service, and wide area broadcast signaling information of the composite local first broadcast service;

a cell broadcast base station module 2, configured to obtain second broadcast information from a core network, convert the second broadcast information into a cell broadcast signal with middle-low spectral efficiency, and transmit the cell broadcast signal, where the second broadcast information includes service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service, and cell broadcast signaling information of the local second broadcast service;

the relay broadcast base station module 3 is configured to receive the cell broadcast signal and the wide area broadcast signal, forward the cell broadcast signal, parse the wide area broadcast signal to obtain relay broadcast information, convert the relay broadcast information into a relay broadcast signal that generates a middle-low spectral efficiency, and transmit the relay broadcast signal;

And the terminal module 4 is configured to select a received broadcast signal according to a terminal type and a receiving condition, demodulate and decode the received broadcast signal, and obtain a broadcast service to be received, where the broadcast signal includes the wide area broadcast signal or the cell broadcast signal or the relay broadcast signal.

In practice, the wide area broadcast base station module 1 obtains first broadcast information from the core network, the first broadcast information including service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of the composite local first broadcast service, and wide area broadcast signaling information of the composite local first broadcast service, wherein the service information of the composite area first broadcast service includes service information of the area first broadcast service and relay broadcast signaling information of the area first broadcast service, the service information of the composite local first broadcast service includes service information of the local first broadcast service and relay broadcast signaling information of the local first broadcast service, the wide area broadcast base station module 1 converts the first broadcast information into a wide area broadcast signal with high spectral efficiency and transmits the wide area broadcast signal, the cell broadcast base station module 2, the method is used for obtaining second broadcast information from a core network, converting the second broadcast information into a cell broadcast signal with medium-low spectral efficiency, transmitting the cell broadcast signal, wherein the second broadcast information comprises service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service and cell broadcast signaling information of the local second broadcast service, the relay broadcast base station module 3 can select to directly forward or decode and forward after receiving the cell broadcast signal, the relay broadcast base station module 3 can analyze and obtain relay broadcast information after receiving a wide area broadcast signal, the relay broadcast information comprises service information of a regional third broadcast service, relay broadcast signaling information of the regional third broadcast service, service information of the local third broadcast service and relay broadcast signaling information of the local third broadcast service, it should be noted that the relay broadcast information is obtained from a wide area broadcast signal, specifically, the service information of the composite regional first broadcast service and the service information of the composite local first broadcast service in the wide area broadcast signal, the regional third broadcast service is the same as the regional second broadcast service, the broadcast signal distribution system may include a plurality of wide area broadcast base station modules 1, a cell broadcast base station module 2, a relay broadcast base station module 3 and a terminal module 4, the wide area broadcast base station modules 1 may form a single frequency network with other wide area broadcast base station modules 1 in the broadcast service range, the cell broadcast base station modules 2 may form a single frequency network with other cell broadcast base station modules 2 in the broadcast service range, and the relay broadcast base station modules 3 may form a single frequency network with other relay broadcast base station modules 3 and cell broadcast base station modules 2 in the broadcast service range.

Specifically, a plurality of wide area broadcast base station modules 1 within the service range of the regional broadcast service form one single-frequency network, and a cell broadcast base station module 2 and a relay broadcast base station module 3 form another single-frequency network; the broadcast signals transmitted by the wide-area broadcast base station module 1 have the characteristics of high spectral efficiency and wide coverage, but the coverage rate of terminals in the coverage range is relatively low, the deep coverage of the broadcast signals is difficult to realize, and the coverage rate of terminals with general or bad receiving conditions such as handheld mobile terminals is low; the broadcast signals transmitted by the cell broadcast base station module 2 have lower spectral efficiency, the coverage area is far smaller than that of the wide-area broadcast base station module 1, but the coverage area of terminals in the coverage area is relatively higher, so that the deep coverage of the broadcast signals can be realized, and the coverage area of terminals with general or bad receiving conditions such as handheld mobile terminals is higher;

the cell broadcast base station module 2 can be a mobile communication base station and can support unicast or multicast service at the same time; the cell broadcast base station module 2 may be a 5G mobile communication base station; the cell broadcast base station can also complement the point to receive and forward the wide area broadcast signal transmitted by the wide area broadcast base station so as to realize the deep coverage of the wide area broadcast signal.

The relay broadcast base station module 3 analyzes the wide area broadcast signals transmitted by the wide area broadcast base station to obtain service information and relay broadcast signaling information of the regional or local broadcast service, which is equivalent to the connection with the virtual core network, the regional third broadcast service is the same as the regional second broadcast service, the relay broadcast base station module 3 transmits the relay broadcast signals, the cell broadcast base station module 2 transmits the cell broadcast signals under the control of the single-frequency network synchronization information of the regional second broadcast service, the relay broadcast base station module 3 and the cell broadcast base station module 2 form the single-frequency network transmission signals of the regional second broadcast service, the broadcast signals transmitted by the relay broadcast base station module 3 have lower spectral efficiency, the coverage area is smaller than that of the wide area broadcast base station module 1, but the coverage area of terminals in the coverage area is relatively higher, the coverage area of terminals with general or bad receiving conditions for handheld mobile terminals and the like is higher, and the relay broadcast base station module 3 can further realize the deep coverage of the terminals in the coverage edge or blind areas of the cells of the cell broadcast base station module 2. Thus, the broadcast signal distribution system is capable of simultaneously compromising wide area and deep coverage of the broadcast signal.

The wide area broadcast base station module 1 and the relay broadcast base station module 3 perform heterogeneous networking to support broadcast service reception of the terminal module 4, specifically, the relay broadcast base station module 3 may obtain service information and relay broadcast signaling information of each broadcast service from each composite broadcast service carried by the wide area broadcast signal transmitted by the wide area broadcast base station module 1, and select service information and relay broadcast signaling information of a local broadcast service and a regional broadcast service to be broadcast according to requirements, to generate and transmit relay broadcast signals carrying the regional broadcast service and the local broadcast service to be broadcast. Therefore, the broadcast signal distribution system can realize wide area coverage and deep coverage of broadcast signals bearing regional broadcast services and broadcast signals bearing local broadcast services, realize differentiated services of fused media to different types of terminals with different receiving conditions, and realize wide area coverage and deep coverage of broadcast signals by heterogeneous networking of the wide area broadcast base station module 1 and the relay broadcast base station module 3, so as to support broadcast service reception of different terminal modules.

Based on the above-described wide-area and deep-coverage broadcast signal distribution method, the present embodiment provides a computer-readable storage medium storing one or more programs executable by one or more processors to implement the steps in the wide-area and deep-coverage broadcast signal distribution method as described in the above-described embodiments.

As shown in fig. 2, based on the broadcast signal distribution method of wide area and deep coverage, the present application also provides a terminal device, which includes at least one processor (processor) 20; a display screen 21; and a memory (memory) 22, which may also include a communication interface (Communications Interface) 23 and a bus 24. Wherein the processor 20, the display 21, the memory 22 and the communication interface 23 may communicate with each other via a bus 24. The display screen 21 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 23 may transmit information. The processor 20 may invoke logic instructions in the memory 22 to perform the methods of the embodiments described above.

Further, the logic instructions in the memory 22 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product.

The memory 22, as a computer readable storage medium, may be configured to store a software program, a computer executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 20 performs functional applications and data processing, i.e. implements the methods of the embodiments described above, by running software programs, instructions or modules stored in the memory 22.

The memory 22 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 22 may include high-speed random access memory, and may also include nonvolatile memory. For example, a plurality of media capable of storing program codes such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or a transitory storage medium may be used.

Compared with the prior art, the wide-area and deep-coverage broadcast signal distribution method comprises the steps that a wide-area broadcast base station module obtains first broadcast information from a core network, converts the first broadcast information into a wide-area broadcast signal with high spectral efficiency, and transmits the wide-area broadcast signal; the cell broadcast base station module obtains second broadcast information from a core network, converts the second broadcast information into a cell broadcast signal with medium-low spectral efficiency, and transmits the cell broadcast signal; the relay broadcast base station module receives the cell broadcast signal and the wide area broadcast signal, forwards the cell broadcast signal and analyzes the wide area broadcast signal to obtain relay broadcast information, converts the relay broadcast information into a relay broadcast signal with middle-low spectral efficiency, and transmits the relay broadcast signal; the terminal module selects the received broadcast signals according to the terminal type and the receiving condition, demodulates and decodes the received broadcast signals, and obtains the broadcast service to be received; the wide area broadcasting base station module in the method provides wide area coverage of the broadcasting signals, the cell broadcasting base station module and the relay broadcasting base station module provide deep coverage of the broadcasting signals, and the wide area or deep coverage requirement of the broadcasting signals on various terminals can be met.

It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims

1. A broadcast signal distribution method for wide area and deep coverage, the method comprising:

obtaining first broadcast information from a core network, converting the first broadcast information into a wide area broadcast signal with high spectral efficiency, and transmitting the wide area broadcast signal, wherein the first broadcast information comprises service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of a composite local first broadcast service and wide area broadcast signaling information of the composite local first broadcast service;

obtaining sub-channel information of a wide area broadcast physical layer and first broadcast information from a core network, wherein the first broadcast information comprises service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of a composite local first broadcast service and wide area broadcast signaling information of the composite local first broadcast service, wherein the service information of the composite area first broadcast service comprises service information of the area first broadcast service and relay broadcast signaling information of the area first broadcast service, and the service information of the composite local first broadcast service comprises service information of the local first broadcast service and relay broadcast signaling information of the local first broadcast service;

Distributing physical layer sub-channels corresponding to a composite area for the first broadcast service of the composite area according to the wide area broadcast signaling information and the wide area broadcast physical layer sub-channel information of the first broadcast service of the composite area, and distributing physical layer sub-channels corresponding to the composite local for the first broadcast service of the composite local according to the wide area broadcast signaling information and the wide area broadcast physical layer sub-channel information of the first broadcast service of the composite local;

generating a first wide-area broadcast signal with high spectral efficiency according to the wide-area broadcast signaling information of the first broadcast service of the composite area and a physical layer sub-channel corresponding to the composite area, and generating a second wide-area broadcast signal with high spectral efficiency according to the wide-area broadcast signaling information of the first broadcast service of the composite local and the physical layer sub-channel corresponding to the composite local;

transmitting the first wide-area broadcast signal and the second wide-area broadcast signal;

obtaining second broadcast information from a core network, converting the second broadcast information into a cell broadcast signal with medium-low spectral efficiency, and transmitting the cell broadcast signal, wherein the second broadcast information comprises service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service and cell broadcast signaling information of the local second broadcast service;

Obtaining sub-channel information of a cell broadcast physical layer and obtaining second broadcast information from a core network, wherein the second broadcast information comprises service information of a regional second broadcast service, cell broadcast signaling information of the regional second broadcast service, service information of a local second broadcast service and cell broadcast signaling information of the local second broadcast service;

distributing physical layer sub-channels corresponding to the area for the area second broadcasting service according to the cell broadcasting signaling information and the cell broadcasting physical layer sub-channel information of the area second broadcasting service, and distributing local corresponding physical layer sub-channels for the local second broadcasting service according to the cell broadcasting signaling information and the cell broadcasting physical layer sub-channel information of the local second broadcasting service;

generating a first cell broadcast signal with middle-low spectral efficiency according to the cell broadcast signaling information of the regional second broadcast service and the physical layer sub-channel corresponding to the region, and generating a second cell broadcast signal with middle-low spectral efficiency according to the cell broadcast signaling information of the local second broadcast service and the physical layer sub-channel corresponding to the local;

transmitting the first cell broadcast signal and the second cell broadcast signal;

Receiving the cell broadcast signal and the wide area broadcast signal, forwarding the cell broadcast signal and analyzing the wide area broadcast signal to obtain relay broadcast information, converting the relay broadcast information into relay broadcast signals with medium-low spectral efficiency, and transmitting the relay broadcast signals;

receiving the cell broadcast signal and the wide area broadcast signal, and directly forwarding the cell broadcast signal or decoding and forwarding the cell broadcast signal;

acquiring sub-channel information of a relay broadcast physical layer;

analyzing the wide area broadcast signal to obtain service information of a regional third broadcast service, relay broadcast signaling information of the regional third broadcast service, service information of a local third broadcast service and relay broadcast signaling information of the local third broadcast service;

distributing physical layer sub-channels corresponding to the area for the area third broadcasting service according to the relay broadcasting signaling information and the relay broadcasting physical layer sub-channel information of the area third broadcasting service, and distributing local corresponding physical layer sub-channels for the local third broadcasting service according to the relay broadcasting signaling information and the relay broadcasting physical layer sub-channel information of the local third broadcasting service;

Generating a first relay broadcast signal with middle-low spectral efficiency according to the relay broadcast signaling information of the regional third broadcast service and the physical layer sub-channel corresponding to the region, and generating a second relay broadcast signal with middle-low spectral efficiency according to the relay broadcast signaling information of the local third broadcast service and the physical layer sub-channel corresponding to the local;

transmitting the first relay broadcast signal and the second relay broadcast signal;

and selecting a received broadcast signal according to the terminal type and the receiving condition, demodulating and decoding the received broadcast signal to obtain a broadcast service to be received, wherein the broadcast signal comprises the wide area broadcast signal or the cell broadcast signal or the relay broadcast signal.

2. The method for allocating wide-area and deep-coverage broadcast signals according to claim 1, wherein said physical layer sub-channels are divided orthogonally and non-orthogonally according to two dimensions, terminal-oriented type and priority of carrying broadcast signals, respectively.

3. The method for allocating broadcast signals over wide area and deep coverage according to claim 2, wherein the wide area broadcast signaling information of the first broadcast service in the composite area includes synchronization information of a single frequency network of the first broadcast service in the composite area, and the wide area broadcast base station module forms a single frequency network with other wide area broadcast base station modules within a service range of the first broadcast service according to the synchronization information of the single frequency network of the first broadcast service in the composite area;

The cell broadcast signaling information of the regional second broadcast service comprises the synchronization information of the single-frequency network of the regional second broadcast service, and a single-frequency network is formed according to the synchronization information cell broadcast base station module of the single-frequency network of the regional second broadcast service and other cell broadcast base station modules in the service range of the second broadcast service;

the relay broadcast signaling information of the regional third broadcast service comprises synchronization information of a single-frequency network of the regional third broadcast service, and the relay broadcast base station module forms a single-frequency network with other relay broadcast base station modules and cell broadcast base station modules in the service range of the third broadcast service according to the synchronization information of the single-frequency network of the regional third broadcast service.

4. The broadcast signal distribution method of claim 3, wherein the wide area broadcast signaling information of the composite area first broadcast service further comprises composite area first broadcast service wide area broadcast physical layer subchannel configuration information, and the wide area broadcast signaling information of the composite local first broadcast service comprises composite local first broadcast service wide area broadcast physical layer subchannel configuration information;

5. The broadcast signal distribution method for wide area and deep coverage according to claim 4, wherein the wide area broadcast base station module, the relay broadcast base station module and the terminal module are heterogeneous and networked, and the relay broadcast base station module can obtain different local broadcast services and regional broadcast services from the wide area broadcast signals transmitted by the wide area broadcast base station module, select corresponding local broadcast services and/or regional broadcast services according to requirements, convert the local broadcast services and/or regional broadcast services into corresponding relay broadcast information, convert the corresponding relay broadcast information into corresponding relay broadcast signals, and transmit the corresponding relay broadcast signals.

6. A broadcast signal distribution system for wide area and deep coverage, comprising:

The method comprises the steps of obtaining sub-channel information of a wide area broadcast physical layer and obtaining first broadcast information from a core network, wherein the first broadcast information comprises service information of a composite area first broadcast service, wide area broadcast signaling information of the composite area first broadcast service, service information of a composite local first broadcast service and wide area broadcast signaling information of the composite local first broadcast service, the service information of the composite area first broadcast service comprises service information of the area first broadcast service and relay broadcast signaling information of the area first broadcast service, and the service information of the composite local first broadcast service comprises service information of the local first broadcast service and relay broadcast signaling information of the local first broadcast service;

the method is also used for obtaining the sub-channel information of the cell broadcast physical layer and obtaining second broadcast information from a core network, wherein the second broadcast information comprises service information of regional second broadcast service, cell broadcast signaling information of regional second broadcast service, service information of local second broadcast service and cell broadcast signaling information of local second broadcast service;

The method is also used for receiving the cell broadcast signal and the wide area broadcast signal, and directly forwarding the cell broadcast signal or decoding and forwarding the cell broadcast signal;

acquiring sub-channel information of a relay broadcast physical layer;

7. The broadcast signal distribution system of claim 6, wherein the wide area broadcast base station module forms a single frequency network with other wide area broadcast base station modules within a broadcast service area, the cell broadcast base station module forms a single frequency network with other cell broadcast base station modules within a broadcast service area, and the relay broadcast base station module forms a single frequency network with other relay broadcast base station modules and cell broadcast base station modules within a broadcast service area.

8. A computer readable storage medium storing one or more programs executable by one or more processors to implement the steps in the wide area and deep coverage broadcast signal distribution method of any of claims 1-5.

9. A terminal device, comprising: a processor, a memory, and a communication bus; the memory has stored thereon a computer readable program executable by the processor;

the processor, when executing the computer readable program, implements the steps in the wide area and deep coverage broadcast signal distribution method as claimed in any one of claims 1-5.