CN109167842A - Content distribution and transmission service service system and method based on mixing broadcast mode - Google Patents
Content distribution and transmission service service system and method based on mixing broadcast mode Download PDFInfo
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- CN109167842A CN109167842A CN201811246376.5A CN201811246376A CN109167842A CN 109167842 A CN109167842 A CN 109167842A CN 201811246376 A CN201811246376 A CN 201811246376A CN 109167842 A CN109167842 A CN 109167842A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 181
- 238000009826 distribution Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 18
- 230000011664 signaling Effects 0.000 claims description 13
- 238000013475 authorization Methods 0.000 claims description 12
- 238000001228 spectrum Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 9
- 238000009432 framing Methods 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1859—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast adapted to provide push services, e.g. data channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
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Abstract
The invention discloses a kind of content distributions based on mixing broadcast mode and transmission service service system and method, wherein the system includes: applications client, for obtaining and sending the client-side information after changing；Transmission service sending strategy is formulated to generate transmission service request for receiving and updating storage client-side information in application service center；Content center, for generating transmission scheme and business tine according to the physical-layer sub-channel information of transmission service request and broadcast transmitting station；Broadcast transmitting station, for carrying out coded modulation and subsequent processing to business tine according to transmission scheme, obtaining sending signal and exporting to corresponding physical-layer sub-channel.The system can overcome the disadvantage that traditional broadcast multicast network list Service coverage is limited, multicast transmitting station overlapping region is in poor service, progressive extension can be carried out to physical-layer broadcasts network as needed, dynamic adjusts the resource requirement and content distribution of different business as needed.
Description
Technical field
The present invention relates to digital information transmission technical field, in particular to a kind of content distribution based on mixing broadcast mode
With transmission service service system and method.
Background technique
With the deployment and commercialization of the development of mobile communication technology and 4G mobile network in the world, number of mobile users
Sharply increase, diversified application scenarios continue to bring out, mobile data flow explosive increase.Wherein, mobile video pushes
Etc. business appearance, to mobile network data transmission efficiency, stability and service quality made higher requirement.
Broadcast/multi broadcast technology uses the transmission mode of point-to-multipoint, can be in limited frequency spectrum resource, by identical industry
Business content is sent to all users or specific one group of user, has high spectrum efficiency and frequency efficiency, Ke Yishi
Now efficient, stable, high quality, the downlink transfer of large capacity.Therefore, 4G network uses multicast broadcast multimedia service
(Multimedia Broadcast/Multicast Services, MBS), through broadcast/multi broadcast technology into service range
All users or specific one group of user provide downlink business content and send.MBMS mainly includes two kinds of network modes, multimedia
Broadcast/multicast service single frequency network (Multimedia Broadcast/Multicast Service Single Frequency
Network, MBSFN) and single cell point to multiple spot (Single-Cell Point-To-Multipoint, SC-PTM).
MBSFN uses single frequency network (Single Frequency Network, SFN) networking, and multiple broadcast transmitting stations are same
Step ground emits identical signal in same time with identical running time-frequency resource, improves running time-frequency resource utilization rate, while can provide diversity
Gain is to enhance received reliability.Due to the advantages that coverage area is big, transmitter is at low cost, frequency efficiency is high, based on single
The broadcast/multi broadcast technology of frequency net networking has become the mainstream technology scheme of wireless digital broadcasting nerve of a covering.
As the rapid development and continuous infiltration, demand of the different user to broadcasting service of information technology increasingly show
Diversification, personalized multi-service feature.Due to the difference of regional culture, the user on each broadcast transmitting station periphery not only needs
Receive global broadcast service information, it is also desirable to receive different local service information, this requires broadcast transmitting station can be simultaneously
Transmit identical common service and different local services.Traditional broadcast/multi broadcast technology based on single frequency network networking, by physics
Layer channel resource is divided into common signal channel and local channel, transmits common service and local service respectively, wherein common signal channel and
Local channel can be divided further into multiple subchannels to transmit multiple business.
The broadcast/multi broadcast technology based on single frequency network networking is primarily present following problems in the related technology, is transmitting local industry
When business, the signal for multiple local services that the user of multiple broadcast transmitting station overlapping regions receives is interfered with each other, so as to cause
Multiple broadcast transmitting station overlapping region service quality are poor, in addition, take into account single broadcast transmitting station center of housing estate high spectrum effect and
There are technological challenges for the big covering of cell edge.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of content distributions and transmission service based on mixing broadcast mode
Service system, the system can overcome that traditional broadcast multicast network list Service coverage is limited, multicast transmitting station crossover region
Domain disadvantage in poor service can carry out progressive extension to physical-layer broadcasts network as needed, and dynamic adjusts not as needed
With the resource requirement and content distribution of business.
It is a kind of based on the content distribution for mixing broadcast mode and transmission service clothes it is another object of the present invention to propose
Business method.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of content distribution based on mixing broadcast mode
With transmission service service system, comprising: applications client, for when client-side information changes, obtaining and sending variation
Existing customer client information afterwards；Application service center, the active client letter sent for receiving the applications client
Breath, to update storage the client-side information, and formulates transmission service sending strategy, to generate transmission service request；It is multiple wide
Broadcast transmitting station；Content center, the transmission service request sent for receiving the application service center, and pushed away according to described
Service request and the physical-layer sub-channel information of the multiple broadcast transmitting station is sent to send out the multiple broadcast in service system
The physical-layer sub-channel for penetrating platform generates transmission scheme and business tine, so that the multiple broadcast transmitting station is according to described interior
The described sender case that appearance center is sent carries out coded modulation and subsequent processing to the received business tine, to be sent
Signal, and the transmission signal is exported to the corresponding physical-layer sub-channel.
The content distribution and transmission service service system based on mixing broadcast mode of the embodiment of the present invention, by public
Business uses the broadcast mode of single frequency network, and the broadcast mode of non-orthogonal multiple is used to local service, to provide efficient, steady
Fixed, high quality and large capacity information transmission, is to carry out content distribution and service propelling based on mobile communications network to existing
Useful supplement, can overcome that traditional broadcast multicast network list Service coverage is limited, multicast transmitting station overlapping region clothes
It is engaged in ropy disadvantage, progressive extension can be carried out to physical-layer broadcasts network as needed, dynamic adjustment is not of the same trade or business as needed
The resource requirement and content distribution of business.
In addition, the content distribution and transmission service service system according to the above embodiment of the present invention based on mixing broadcast mode
System can also have following additional technical characteristic:
Further, in one embodiment of the invention, the applications client is also used to according to the application service
The authorization message at center, and the transport protocol of broadcast channel is combined, the signal of the physical-layer sub-channel is received, to the physics
The signal of layer sub-channels carries out mode detection and demodulating and decoding, to obtain the transmission mode of the required physical-layer sub-channel,
And obtain the signaling content and the business tine that the physical-layer sub-channel carries.
Further, in one embodiment of the invention, each broadcast transmitting station tool of the multiple broadcast transmitting station
Body is used to carry out coded modulation according to information bit of the transmission mode in described sender case to the business tine, to obtain
Symbol sebolic addressing is sent, and according to the physical-layer sub-channel information and sending time in described sender case, is assisted according to transmission
View carries out subsequent processing, including OFDM modulation, framing, spectrum shaping and power tune to the transmission symbol sebolic addressing
It is whole, to obtain the transmission signal, and according to the physical-layer sub-channel information and sending time in described sender case,
The transmission signal is exported to the corresponding physical-layer sub-channel.
Further, in one embodiment of the invention, the multiple broadcast transmitting station divides physical layer channel resource
The physical-layer sub-channel, including global subchannel and local subchannel are obtained, is respectively used to transmit global business and local industry
Business, wherein the overall situation subchannel uses the broadcast mode of single frequency network, and the local subchannel uses the broadcast mould of non-single frequency network
Formula.
Further, in one embodiment of the invention, described sender case includes the transmission service described more
Occupation condition, sending time, signal frame structure, transmission mode, antenna beam and the transmission power of a broadcast transmitting station.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of content point based on mixing broadcast mode
Hair and transmission service method of servicing, comprising: when client-side information changes, obtain and send the active client after variation
Information；The client-side information is updated storage, and formulates transmission service sending strategy, to generate transmission service request；According to institute
Transmission service request is stated with the physical-layer sub-channel information of the multiple broadcast transmitting station to the multiple wide in service system
The physical-layer sub-channel for broadcasting transmitting station generates transmission scheme and business tine；The multiple broadcast transmitting station is controlled according to institute
The described sender case for stating content center transmission carries out coded modulation and subsequent processing to the received business tine, to obtain
Signal is sent, and the transmission signal is exported to the corresponding physical-layer sub-channel.
The content distribution and transmission service method of servicing based on mixing broadcast mode of the embodiment of the present invention, by public
Business uses the broadcast mode of single frequency network, and the broadcast mode of non-orthogonal multiple is used to local service, to provide efficient, steady
Fixed, high quality and large capacity information transmission, is to carry out content distribution and service propelling based on mobile communications network to existing
Useful supplement, can overcome that traditional broadcast multicast network list Service coverage is limited, multicast transmitting station overlapping region clothes
It is engaged in ropy disadvantage, progressive extension can be carried out to physical-layer broadcasts network as needed, dynamic adjustment is not of the same trade or business as needed
The resource requirement and content distribution of business.
In addition, the content distribution and transmission service service side according to the above embodiment of the present invention based on mixing broadcast mode
Method can also have following additional technical characteristic:
Further, in one embodiment of the invention, further includes: believed according to the authorization at the application service center
Breath, and the transport protocol of broadcast channel is combined, the signal of the physical-layer sub-channel is received, to the letter of the physical-layer sub-channel
Number mode detection and demodulating and decoding are carried out, to obtain the transmission mode of the required physical-layer sub-channel, and obtains the object
Manage the signaling content and the business tine that layer sub-channels carry.
Further, in one embodiment of the invention, the multiple broadcast transmitting station of control is according to described interior
The described sender case that appearance center is sent carries out coded modulation and subsequent processing to the received business tine, to be sent
Signal, and the transmission signal is exported to the corresponding physical-layer sub-channel, further comprise: the multiple broadcast transmission
Each broadcast transmitting station of platform is compiled according to information bit of the transmission mode in described sender case to the business tine
Code modulation, to obtain sending symbol sebolic addressing, and according to the physical-layer sub-channel information in described sender case and when sending
Between, according to transport protocol, subsequent processing, including OFDM modulation, framing, frequency spectrum are carried out to the transmission symbol sebolic addressing
Forming and power adjustment, to obtain the transmission signal, and according to the physical-layer sub-channel letter in described sender case
Breath and sending time, the transmission signal is exported to the corresponding physical-layer sub-channel.
Further, in one embodiment of the invention, the broadcast transmitting station segmentation physical layer channel resource obtains
The physical-layer sub-channel, including global subchannel and local subchannel, are respectively used to transmit global business and local service,
In, the overall situation subchannel uses the broadcast mode of single frequency network, and the local subchannel uses the broadcast mode of non-single frequency network.
Further, in one embodiment of the invention, described sender case includes the transmission service described more
Occupation condition, sending time, signal frame structure, transmission mode, antenna beam and the transmission function of a broadcast transmitting station
Rate.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is according to one embodiment of the invention based on the content distribution and transmission service service system for mixing broadcast mode
System structural schematic diagram；
Fig. 2 is according to one embodiment of the invention based on the content distribution and transmission service service system for mixing broadcast mode
System flow chart of steps；
Fig. 3 is to divide physical layer channel resource according to the broadcast transmitting station of one embodiment of the invention to obtain physical layer letter
The schematic diagram of three kinds of possible partitioning schemes in road；
Fig. 4 is according to one embodiment of the invention based on the content distribution and transmission service service system for mixing broadcast mode
System initialization step flow chart；
Fig. 5 is according to one embodiment of the invention based on the content distribution and transmission service service system for mixing broadcast mode
System sends signal processing flow chart of steps；
Fig. 6 is according to one embodiment of the invention based on the content distribution and transmission service service system for mixing broadcast mode
System is located at the schematic diagram of the user client of broadcast transmitting station overlapping region；
Fig. 7 is according to one embodiment of the invention based on the content distribution and transmission service service side for mixing broadcast mode
Method flow chart.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The content distribution proposed according to embodiments of the present invention based on mixing broadcast mode is described with reference to the accompanying drawings and is pushed away
Send business service system and method, describe to propose according to embodiments of the present invention first with reference to the accompanying drawings based on mixing broadcast mode
Content distribution and transmission service service system.
Fig. 1 is the content distribution and transmission service service system knot based on mixing broadcast mode of one embodiment of the invention
Structure schematic diagram.
As shown in Figure 1, should include: using visitor based on the content distribution and transmission service service system 10 for mixing broadcast mode
Family end 100, application service center 200, content center 300 and multiple broadcast transmitting stations 400.
Wherein, applications client 100 is used for when client-side information changes, and is obtained and is sent the current visitor after variation
Family client information.Application service center 200 is used to receive the existing customer client information of applications client transmission, to update storage client
Client information, and transmission service sending strategy is formulated, to generate transmission service request.Content center 300 is for receiving application service
The transmission service request that center is sent, and according to the physical-layer sub-channel information pair of transmission service request and multiple broadcast transmitting stations
The physical-layer sub-channel of multiple broadcast transmitting stations in service system generates transmission scheme and business tine.Multiple broadcast transmitting stations
400 transmission scheme for being sent according to content center carries out coded modulation and subsequent processing to received business tine, with
It exports to transmission signal, and by signal is sent to corresponding physical-layer sub-channel.The content distribution and transmission service service system
10 can overcome traditional broadcast multicast network list Service coverage to be limited, multicast transmitting station overlapping region is in poor service
Disadvantage can carry out progressive extension to physical-layer broadcasts network as needed, and the resource of dynamic adjustment different business needs as needed
Summation content distribution.
Wherein, content center 300 and broadcast transmission 400 functional modules provided for operator, application service center 200
Server including types of applications, applications client 100 include obtaining types of applications authorization to set with the movement for receiving broadcast singal
Standby and fixed equipment.
Further, in one embodiment of the invention, applications client 100 is also used to according to application service center
Authorization message, and the transport protocol of broadcast channel is combined, the signal of physical-layer sub-channel is received, to the signal of physical-layer sub-channel
Mode detection and demodulating and decoding are carried out, to obtain the transmission mode of required physical-layer sub-channel, and obtains physical-layer sub-channel
The signaling content and business tine of carrying.
Further, in one embodiment of the invention, each broadcast transmitting station of multiple broadcast transmitting stations 400 is specific
For carrying out coded modulation according to information bit of the transmission mode in transmission scheme to business tine, to obtain sending symbol sequence
Column, and according to the physical-layer sub-channel information and sending time in transmission scheme, according to transport protocol, to send symbol sebolic addressing into
Row subsequent processing, including OFDM modulation, framing, spectrum shaping and power adjustment, to obtain sending signal, Yi Jigen
According to the physical-layer sub-channel information and sending time in transmission scheme, signal will be sent and exported to corresponding physical-layer sub-channel.
Further, in one embodiment of the invention, multiple broadcast transmitting stations 400 are divided physical layer channel resource and are obtained
To physical-layer sub-channel, including global subchannel and local subchannel, it is respectively used to transmit global business and local service,
In, global subchannel uses the broadcast mode of single frequency network, and local subchannel uses the broadcast mode of non-single frequency network.
Further, in one embodiment of the invention, transmission scheme includes transmission service in multiple broadcast transmitting stations
Occupation condition, sending time, signal frame structure, transmission mode, antenna beam and send power.
As shown in Fig. 2, mainly should include following based on the content distribution and transmission service service system for mixing broadcast mode
Step:
S1, content center, broadcast transmitting station, application service center and applications client initialization, including system is to each wide
The physical layer channel resource for broadcasting transmitting station is split, and obtains the physical-layer sub-channel (abbreviation subchannel) of each broadcast transmitting station,
And it is sent to content center, applications client registration, request authorize and send client-side information, and application service center is to application visitor
Family end authorizes and records client-side information.
Wherein, as shown in figure 3, broadcast transmitting station segmentation physical layer channel resource obtains physical-layer sub-channel, including but not
It is limited to three kinds of partitioning schemes shown in Fig. 3.The first partitioning scheme divides RF physical layer channel (abbreviation physical layer channel)
For 2 physical-layer sub-channels, all it is exclusively used in broadcasting；Physical layer channel is divided into 3 physical layers by second of partitioning scheme
Channel, two of them physical-layer sub-channel is for broadcasting, and in addition 1 physical-layer sub-channel is used for multicast；The third partitioning scheme
Physical layer channel is divided into 3 physical-layer sub-channels, wherein 1 physical-layer sub-channel is used to broadcast, 1 physical-layer sub-channel
For multicast, in addition 1 physical-layer sub-channel is used for unicast.
Further, in an embodiment of the present invention, client-side information, including but not limited to applications client geographical location
Information, application content preference and application content subscribe to situation.
As shown in figure 4, the specific mistake that content center, broadcast transmitting station, application service center and applications client initialize
Journey are as follows:
S11, system are split to obtain physical-layer sub-channel to the physical layer channel resource of each broadcast transmitting station, obtain each
The physical-layer sub-channel of broadcast transmitting station, including global subchannel and local subchannel, are respectively used to transmit global business and this
Ground business.
Wherein, global subchannel uses the broadcast mode of single frequency network, and each broadcast transmitting station in same single frequency network is complete
The channel resource of police station's channel distribution is consistent, and is controlled by same single frequency adapter.
Local subchannel uses the broadcast mode of non-single frequency network, local subchannel distribution of the system to each broadcast transmitting station
Channel resource it is identical with the signal frame structure of use.
Preferably, local subchannel can use orthogonal multiple access techniques, can also use non-orthogonal multiple technology.To use
The local subchannel of non-orthogonal multiple technology is distinguished different broadcast transmitting stations using different non-orthogonal multiple interleavers, and is adopted
With different pilot frequency designs.
Further, in an embodiment of the present invention, local subchannel uses orthogonal multiple access technique, wherein is located at
The user of the service coverage overlapping region of two broadcast transmitting stations, in the same local subchannel, receive two
The broadcast singal of broadcast transmitting station is superimposed and interferes with each other, and the broadcast singal of a broadcast transmitting station is considered as interference by receiving end,
Demodulating and decoding is carried out to the broadcast singal of another broadcast transmitting station, performance will receive limitation.
Further, in an embodiment of the present invention, local subchannel uses non-orthogonal multiple access technology, wherein position
In the user of the service coverage overlapping region of two broadcast transmitting stations, in the same local subchannel, receive two
The broadcast singal of a broadcast transmitting station uses different pilot frequency designs and different non-orthogonal multiple interleavers, and overlapping region is used
Family can distinguish two broadcast singals by pilot frequency design, can use successive interference cancellation techniques or combined decoding technology,
The broadcast singal of two broadcast transmitting stations of superposition is handled, and then is obtained in the signaling content and business of physical-layer sub-channel carrying
Hold.
Specifically, broadcast transmitting station segmentation physical layer channel resource obtains physical-layer sub-channel, and according to type of service, will
It is divided into global subchannel and local subchannel with the subchannel of multicast for broadcasting, is respectively used to transmit global business and local industry
Business.
S12, system is by the physical-layer sub-channel information of each broadcast transmitting station and is sent to content center, including global son
Channel and local subchannel information.
S13, applications client is registered to application service center and is applied, and sends authorization requests and client-side information.
S14, application service center record corresponding client letter to applications client authorization registered and by verifying
Breath, and pertinent authorization information is sent to applications client.
S2, when client-side information changes, new client-side information is sent in application service by applications client
The heart.
S3, application service center new client-side information based on the received, the client-side information updated storage.
S4, application service center are formulated transmission service and are sent according to the client-side information of all applications clients of storage
Strategy, and according to transmission service sending strategy, transmission service request is issued to content center.
Wherein, transmission service request include the type of service of transmission service, the push time, Service coverage, in business
Hold etc..Further, the type of service of transmission service includes local service and global business, and every class business includes one or more
Business.
S5, content center is requested according to the transmission service at application service center and the physical layer of each broadcast transmitting station
Subchannel information formulates transmission scheme to the physical-layer sub-channel of each broadcast transmitting station in service system.
Wherein, transmission scheme includes occupation condition, sending time, letter of the transmission service in each broadcast transmitting station
Number frame structure, transmission mode, antenna beam and send power etc..Further, the transmission mode of transmission service includes but unlimited
In Coded modulation parameters, wherein to the physical-layer sub-channel using non-orthogonal multiple technology, the transmission mode of transmission service is also wrapped
Include the non-orthogonal multiple interleaver and pilot frequency design for distinguishing different transmitting stations.
Further, in an embodiment of the present invention, content center formulates multiple broadcast transmitting stations in service system
The detailed process of transmission scheme includes: the transmission service for type of service for global business, the sender of content center customization
Case is all the same in the occupation condition, sending time and transmission mode of each broadcast transmitting station.
It is the transmission service of local service for type of service, the transmission scheme of content center customization is in each broadcast transmission
Occupation condition, sending time, the transmission mode of platform can be identical or different, wherein for using non-orthogonal multiple technology
Physical-layer sub-channel, the transmission mode of broadcast transmitting station further includes distinguishing the non-orthogonal multiple interleaver of different broadcast transmitting stations
And pilot frequency design.
Further, in one embodiment of the invention, if necessary to support tradition LTE (Long Term
Evolution) the business of mobile network, then can using the signal frame structure in LTE protocol, if the service system independently of
The traditional business of LTE mobile network, can be using the special signal frame structure towards broadcast multi-broadcasting optimization.
S6, content center is by transmission scheme and business tine, each broadcast transmitting station for being sent in service system.
S7, each broadcast transmitting station carry out coded modulation and subsequent place according to the transmission scheme received, to business tine
Reason to obtain sending signal, and is exported signal is sent to corresponding physical-layer sub-channel.
As shown in figure 5, in an embodiment of the present invention, the detailed process of step S7 includes:
S71, broadcast transmitting station carry out coding tune according to the transmission mode in transmission scheme, to the information bit of business tine
System obtains sending symbol sebolic addressing；
S72, according to the physical-layer sub-channel information and sending time in transmission scheme, and according to transport protocol, to transmission
Symbol sebolic addressing carries out subsequent processing, including OFDM modulation, framing, spectrum shaping and power adjustment, to be sent
Signal；
S73 will send signal and export to corresponding according to the physical-layer sub-channel information and sending time in transmission scheme
Physical-layer sub-channel.
S8, applications client receive object in conjunction with the transport protocol of broadcast channel according to the authorization message at application service center
The signal for managing layer channel carries out mode detection and demodulating and decoding to signal is received, obtains the transmission mould of required physical-layer sub-channel
Formula, and further obtain the signaling content and business tine of physical-layer sub-channel carrying.
In an embodiment of the present invention, it is obtained required in step S8 to signal progress mode detection and demodulating and decoding is received
The transmission mode of physical-layer sub-channel, and further obtain the signaling content and business tine of physical-layer sub-channel.
As shown in fig. 6, detailed process includes: the applications client for being located at broadcast transmitting station overlapping region, to reception
Signal carries out mode detection, to a physical-layer sub-channel, obtains the biography that signal is sent from one or more broadcast transmitting stations
Defeated mode, applications client send the transmission mode of signal according to one or more broadcast transmitting stations, wherein including pilot frequency design
With non-orthogonal multiple interlacing pattern, is synchronized and channel estimation to signal is received, then carry out combined decoding or serial interference
It eliminates, further obtains the signaling content and business tine of physical-layer sub-channel.
Below by specific embodiment to the content distribution and push industry based on mixing broadcast mode of the embodiment of the present invention
Business service system is described in detail.
In above-mentioned steps S5, content center is requested according to the transmission service at application service center and each broadcast is sent out
The physical-layer sub-channel information for penetrating platform formulates sender to the physical-layer sub-channel of each broadcast transmitting station in service system
Case, wherein be the transmission service of local service for type of service, the transmission scheme of content center customization is in each broadcast transmission
Occupation condition, sending time, the signal frame structure of platform are identical with transmission mode.
To take into account, the high spectrum of each broadcast transmitting station center of housing estate is imitated and the reliable covering of cell edge, each background are believed
Road uses dual non-orthogonal multiple technology, and the local subchannel of each transmitting station is all made of non-orthogonal multiplexing technology, same
The signal of two kinds of different priorities of superposed transmission in local subchannel.
The high priority signals of each transmitting station local subchannel are accessed using non-orthogonal multiple, such as Interleave Division Multiple Access
Technology, the high priority signals of different transmitting station locals subchannel are by using different non-orthogonal multiple interleavers and pilot patterns
Case distinguishes.
Correspondingly, in above-mentioned steps S8, applications client is believed according to the authorization message at application service center in conjunction with broadcast
The transport protocol in road receives the signal of physical layer channel, carries out mode detection and demodulating and decoding to signal is received, obtains required thing
The transmission mode of layer sub-channels is managed, and further obtains the signaling content and business tine of physical-layer sub-channel carrying, wherein is right
User's (i.e. Cell Center User) in the service covering center for being located at broadcast transmitting station first will since channel condition is preferable
Low priority signal later carries out high priority signals as interference, demodulating and decoding high priority signals in local subchannel
Interference is eliminated, and then carries out demodulating and decoding to low priority signal, the high spectrum effect of center of housing estate is realized, to obtain broadcast transmission
The higher business of service quality that platform is sent realizes the transmission service service function of large capacity, high quality.
For being located at the user of the service coverage overlapping region of two broadcast transmitting stations, channel condition is poor, same
The broadcast singal of two broadcast transmitting stations received in one local subchannel, due to the broadcast singal of two broadcast transmitting stations
Using different pilot frequency designs and different non-orthogonal multiple interleavers, which can be distinguished two wide by pilot frequency design
Signal is broadcast, and successive interference cancellation techniques or combined decoding technology can be used, handles two broadcast transmitting stations of superposition
Broadcast singal, realizes the big covering of cell edge or overlapping region, so obtain physical-layer sub-channel carrying signaling content and
Business tine.
More specifically, user uses successive interference cancellation techniques or combined decoding technology, and two for handling superposition are wide
The broadcast singal for broadcasting transmitting station is further included steps of since the service coverage for being located at two broadcast transmitting stations is handed over
The subscriber channel condition in folded region is poor, user by two low priority signals in the broadcast singal of two broadcast transmitting stations all
As interference, serial interference eliminations or combined decoding only are carried out to two high priority signals, thus successively or joint demodulation solution
Code high priority signals, and then obtain the signaling content and industry that one or more high priority signals carry in physical-layer sub-channel
Business content.
The content distribution and transmission service service system based on mixing broadcast mode proposed according to embodiments of the present invention, leads to
The broadcast mode for using single frequency network to common service is crossed, the broadcast mode of non-orthogonal multiple is used to local service, to provide
Efficiently, stable, high quality and the information of large capacity transmission, be to it is existing based on mobile communications network carry out content distribution and
The useful supplement of service propelling can overcome traditional broadcast multicast network list Service coverage to be limited, multicast transmitting station is handed over
The folded ropy disadvantage of regional service can carry out progressive extension to physical-layer broadcasts network as needed, and dynamic is adjusted as needed
The resource requirement and content distribution of whole different business.
The content distribution proposed according to embodiments of the present invention based on mixing broadcast mode is described referring next to attached drawing and is pushed away
Send business service method.
Fig. 7 is the content distribution and transmission service method of servicing stream based on mixing broadcast mode of one embodiment of the invention
Cheng Tu.
As shown in fig. 7, should based on mixing broadcast mode content distribution and transmission service method of servicing the following steps are included:
In step s101, it when client-side information changes, obtains and sends the existing customer client information after variation.
In step s 102, client-side information is updated storage, and formulates transmission service sending strategy, to generate transmission service
Request.
In step s 103, according to the physical-layer sub-channel information of transmission service request and multiple broadcast transmitting stations to service
The physical-layer sub-channel of multiple broadcast transmitting stations in system generates transmission scheme and business tine.
Further, in one embodiment of the invention, broadcast transmitting station segmentation physical layer channel resource obtains physics
Layer sub-channels, including global subchannel and local subchannel, are respectively used to transmit global business and local service, wherein global
Subchannel uses the broadcast mode of single frequency network, and local subchannel uses the broadcast mode of non-single frequency network.
Further, in one embodiment of the invention, transmission scheme includes transmission service in multiple broadcast transmitting stations
Occupation condition, sending time, signal frame structure, transmission mode, antenna beam and send power.
In step S104, transmission scheme that multiple broadcast transmitting stations are sent according to content center is controlled to received business
Content carries out coded modulation and subsequent processing, to obtain sending signal, and will send signal and exports to corresponding physical layer and believe
Road.
Further, in one embodiment of the invention, control what multiple broadcast transmitting stations were sent according to content center
Transmission scheme carries out coded modulation and subsequent processing to received business tine, and to obtain sending signal, and it is defeated to send signal
Out to corresponding physical-layer sub-channel, further comprise: each broadcast transmitting station of multiple broadcast transmitting stations is according to transmission scheme
In transmission mode coded modulation is carried out to the information bit of business tine, to obtain sending symbol sebolic addressing, and according to sender
Physical-layer sub-channel information and sending time in case carry out subsequent processing to symbol sebolic addressing is sent according to transport protocol, including
OFDM modulation, framing, spectrum shaping and power adjustment, to obtain sending signal, and according in transmission scheme
Physical-layer sub-channel information and sending time will send signal and export to corresponding physical-layer sub-channel.
Further, in one embodiment of the invention, further includes: according to the authorization message at application service center, and
In conjunction with the transport protocol of broadcast channel, the signal of physical-layer sub-channel is received, mode inspection is carried out to the signal of physical-layer sub-channel
Survey and demodulating and decoding to obtain the transmission mode of required physical-layer sub-channel, and obtain the signaling of physical-layer sub-channel carrying
Content and business tine.
It should be noted that aforementioned to content distribution and transmission service service system embodiment based on mixing broadcast mode
The explanation method that is also applied for the embodiment, details are not described herein again.
The content distribution and transmission service method of servicing based on mixing broadcast mode proposed according to embodiments of the present invention, leads to
The broadcast mode for using single frequency network to common service is crossed, the broadcast mode of non-orthogonal multiple is used to local service, to provide
Efficiently, stable, high quality and the information of large capacity transmission, be to it is existing based on mobile communications network carry out content distribution and
The useful supplement of service propelling can overcome traditional broadcast multicast network list Service coverage to be limited, multicast transmitting station is handed over
The folded ropy disadvantage of regional service can carry out progressive extension to physical-layer broadcasts network as needed, and dynamic is adjusted as needed
The resource requirement and content distribution of whole different business.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of content distribution and transmission service service system based on mixing broadcast mode characterized by comprising
Applications client, for when client-side information changes, obtaining and sending the existing customer client information after changing；
Application service center, the existing customer client information sent for receiving the applications client, to update storage
Client-side information is stated, and formulates transmission service sending strategy, to generate transmission service request；
Multiple broadcast transmitting stations；And
Content center, the transmission service request sent for receiving the application service center, and according to the push industry
The physical-layer sub-channel information of business request and the multiple broadcast transmitting station is to the multiple broadcast transmitting station in service system
The physical-layer sub-channel generate transmission scheme and business tine so that the multiple broadcast transmitting station is according in the content
The described sender case that the heart is sent carries out coded modulation and subsequent processing to the received business tine, to obtain sending letter
Number, and the transmission signal is exported to the corresponding physical-layer sub-channel.
2. the content distribution and transmission service service system according to claim 1 based on mixing broadcast mode, feature
It is, the applications client is also used to the authorization message according to the application service center, and combines the transmission of broadcast channel
Agreement receives the signal of the physical-layer sub-channel, carries out mode detection reconciliation to the signal of the physical-layer sub-channel and reconciles
Code to obtain the transmission mode of the required physical-layer sub-channel, and obtains in the signaling that the physical-layer sub-channel carries
Hold and the business tine.
3. the content distribution and transmission service service system according to claim 1 based on mixing broadcast mode, feature
It is, each broadcast transmitting station of the multiple broadcast transmitting station is specifically used for according to the transmission mode pair in described sender case
The information bit of the business tine carries out coded modulation, to obtain sending symbol sebolic addressing, and according in described sender case
The physical-layer sub-channel information and sending time carry out subsequent processing, packet to the transmission symbol sebolic addressing according to transport protocol
OFDM modulation, framing, spectrum shaping and power adjustment are included, to obtain the transmission signal, and according to the hair
The physical-layer sub-channel information and the sending time in scheme are sent, the transmission signal is exported to the corresponding physical layer
Subchannel.
4. the content distribution and transmission service service system according to claim 1 based on mixing broadcast mode, feature
It is, the multiple broadcast transmitting station segmentation physical layer channel resource obtains the physical-layer sub-channel, including global subchannel
It with local subchannel, is respectively used to transmit global business and local service, wherein the overall situation subchannel is using the wide of single frequency network
Mode is broadcast, the local subchannel uses the broadcast mode of non-single frequency network.
5. the content distribution and transmission service service system according to claim 1 based on mixing broadcast mode, feature
Be, described sender case include the transmission service the occupation condition of the multiple broadcast transmitting station, sending time,
Signal frame structure, transmission mode, antenna beam and transmission power.
6. a kind of content distribution and transmission service method of servicing based on mixing broadcast mode, which is characterized in that including following step
It is rapid:
Existing customer client information when client-side information changes, after obtaining variation；
The client-side information is updated storage, and formulates transmission service sending strategy, to generate transmission service request；
According to the physical-layer sub-channel information of transmission service request and the multiple broadcast transmitting station in service system
The physical-layer sub-channel of the multiple broadcast transmitting station generates transmission scheme and business tine；And
Described sender case that the multiple broadcast transmitting station is sent according to the content center is controlled to the received business
Content carries out coded modulation and subsequent processing, to obtain sending signal, and the transmission signal is exported to the corresponding object
Manage layer sub-channels.
7. the content distribution and transmission service method of servicing according to claim 6 based on mixing broadcast mode, feature
It is, further includes:
According to the authorization message at the application service center, and the transport protocol of broadcast channel is combined, receives the physical layer
The signal of channel carries out mode detection and demodulating and decoding to the signal of the physical-layer sub-channel, to obtain the required object
The transmission mode of layer sub-channels is managed, and obtains the signaling content and the business tine that the physical-layer sub-channel carries.
8. the content distribution and transmission service method of servicing according to claim 6 based on mixing broadcast mode, feature
It is, the described sender case that the multiple broadcast transmitting station of control is sent according to the content center is to received described
Business tine carries out coded modulation and subsequent processing, to obtain sending signal, and the transmission signal is exported to corresponding institute
State physical-layer sub-channel, further comprise: each broadcast transmitting station of the multiple broadcast transmitting station is according to described sender case
In transmission mode coded modulation is carried out to the information bit of the business tine, to obtain sending symbol sebolic addressing, and according to institute
The physical-layer sub-channel information and the sending time in transmission scheme are stated, according to transport protocol, to the transmission symbol sebolic addressing
Subsequent processing, including OFDM modulation, framing, spectrum shaping and power adjustment are carried out, to obtain the transmission signal,
And according to the physical-layer sub-channel information and sending time in described sender case, the transmission signal is exported to right
The physical-layer sub-channel answered.
9. the content distribution and transmission service method of servicing according to claim 6 based on mixing broadcast mode, feature
It is, the broadcast transmitting station segmentation physical layer channel resource obtains the physical-layer sub-channel, including global subchannel and sheet
Ground subchannel is respectively used to transmit global business and local service, wherein the overall situation subchannel uses the broadcast mould of single frequency network
Formula, the local subchannel use the broadcast mode of non-single frequency network.
10. the content distribution and transmission service method of servicing according to claim 6 based on mixing broadcast mode, feature
Be, described sender case include the transmission service the multiple broadcast transmitting station occupation condition, send
Time, signal frame structure, transmission mode, antenna beam and transmission power.
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| CN115499784A (en) * | 2022-08-09 | 2022-12-20 | 鹏城实验室 | Broadcast content distribution method and apparatus for hybrid broadcast, multicast and unicast transmission |
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