WO2020051938A1 - Procédé d'accès à une station de diffusion, côté réception et support de stockage lisible par ordinateur - Google Patents

Procédé d'accès à une station de diffusion, côté réception et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2020051938A1
WO2020051938A1 PCT/CN2018/106415 CN2018106415W WO2020051938A1 WO 2020051938 A1 WO2020051938 A1 WO 2020051938A1 CN 2018106415 W CN2018106415 W CN 2018106415W WO 2020051938 A1 WO2020051938 A1 WO 2020051938A1
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WO
WIPO (PCT)
Prior art keywords
broadcast
receiving end
broadcasting station
signal
site
Prior art date
Application number
PCT/CN2018/106415
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English (en)
Chinese (zh)
Inventor
朱钧
陈帝亮
尹华镜
Original Assignee
深圳思凯微电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳思凯微电子有限公司 filed Critical 深圳思凯微电子有限公司
Publication of WO2020051938A1 publication Critical patent/WO2020051938A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information

Definitions

  • the invention relates to the technical field of wireless digital broadcasting, in particular to a method for accessing a broadcasting station, a receiving end, and a computer-readable storage medium.
  • the wireless broadcasting system When the wireless broadcasting system is actually deployed, it can use single frequency network or multi-frequency network according to business needs.
  • a multi-frequency network divided according to regions is widely used. Broadcast stations in different regions in the multi-frequency network broadcast specific programs on channels of different frequencies. For example, in a multi-frequency network, the broadcasting station 1 in the region A broadcasts a specific program on the channel with the frequency of 1 and the broadcasting station 2 in the region B broadcasts the specific program on the channel with the frequency of 2.
  • the receiving end is in the region A In the middle, the receiving frequency needs to be adjusted to frequency 1 in order to receive the specific program broadcast from broadcast site 1. When the receiving end moves from area A to area B, the receiving frequency needs to be adjusted from frequency 1 to frequency 2 before receiving. Go to a specific program broadcast on broadcast site 2.
  • the receiving frequency of the receiving end needs to be manually adjusted to ensure that the wireless broadcast service is continuously available.
  • the main purpose of the present invention is to provide a method for accessing a broadcast site, a receiving end, and a computer-readable storage medium, which are aimed at solving the problem that in the prior art, in a multi-frequency network, as the region changes, the receiving end needs to be manually adjusted manually.
  • Technical issues with reception frequency are to provide a method for accessing a broadcast site, a receiving end, and a computer-readable storage medium, which are aimed at solving the problem that in the prior art, in a multi-frequency network, as the region changes, the receiving end needs to be manually adjusted manually.
  • the present invention provides a method for accessing a broadcast site, where the method for accessing a broadcast site includes the following steps:
  • the step of determining the current sector of the receiving end based on the current location information and broadcast site coverage information includes:
  • the current sector of the receiving end is determined according to the azimuth of the receiving end relative to each broadcasting station and the sector division information of each broadcasting station included in the broadcasting site coverage information.
  • the step of determining the best broadcast site according to the current sector includes:
  • the broadcasting station to which the currently located sector belongs is the best broadcasting site.
  • the method further includes:
  • the receiving end is obtained according to the coverage distance of each currently located sector and the distance between the receiving end and the broadcasting station to which each currently located sector belongs.
  • the entry scale relative to each current sector
  • the broadcasting station to which the sector currently located corresponding to the maximum entry scale belongs is the best broadcasting station.
  • the step of receiving a broadcast signal of the best broadcast site includes:
  • the broadcasting station corresponding to the currently received broadcasting signal is not the best broadcasting station, obtaining the signal frequency of the best broadcasting station;
  • Stop receiving the current broadcast signal and receive the broadcast signal of the best broadcast station through the signal frequency of the best broadcast station.
  • the step of stopping receiving the current broadcast signal and receiving the broadcast signal of the best broadcast station through the signal frequency of the best broadcast station includes:
  • the receiving end has a multi-channel simultaneous receiving function, then receiving the current broadcast signal through the first receiving channel, and detecting whether the second receiving channel can receive the signal of the best broadcasting station through the signal frequency of the best broadcasting station. Broadcast signal
  • the second receiving channel can receive the broadcasting signal of the best broadcasting station through the signal frequency of the best broadcasting station, stop receiving the current broadcasting signal through the first receiving channel, and use the second receiving channel
  • the signal frequency of the best broadcast station receives a broadcast signal of the best broadcast station.
  • the method further includes:
  • the receiving end is in a mobile state, set a target duration and start timing. When the timing reaches the target duration, obtain new current location information of the receiving end and broadcast station coverage information, and broadcast the new current location information and broadcast information.
  • the site coverage information is used as current location information and broadcast site coverage information, and a step of determining a current sector of the receiving end based on the current location information and the broadcast site coverage information is performed.
  • the steps of setting a target duration and starting a timing include:
  • the receiving end If the receiving end is in a moving state, obtain a moving speed of the receiving end, set a target duration based on the moving speed, and start timing.
  • the present invention further provides a receiving end, where the receiving end includes: a memory, a processor, and a broadcasting station access program stored on the memory and executable on the processor.
  • the receiving end includes: a memory, a processor, and a broadcasting station access program stored on the memory and executable on the processor. The steps of implementing the broadcasting station access method as described above when the broadcasting station access program is executed by the processor are described.
  • the present invention also provides a computer-readable storage medium, where the computer-readable storage medium stores a broadcasting station access program, and the broadcasting station access program is implemented as described above when executed by a processor. The steps of the broadcasting station access method described above.
  • the current location information and broadcast site coverage information of the receiving end are obtained, and based on the current location information and broadcast site coverage information, the current sector of the receiving end is determined; according to the current sector, the most recent sector is determined.
  • a best broadcast site and receive a broadcast signal from the best broadcast site.
  • the best broadcasting station can be automatically selected for the receiving end, and the broadcasting signal of the best broadcasting station can be received to ensure the continuous availability of the wireless broadcasting service.
  • FIG. 1 is a schematic structural diagram of a receiving end of a hardware operating environment according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a first embodiment of a method for accessing a broadcast site according to the present invention
  • FIG. 3 is a schematic diagram of a valid signal coverage area of a broadcasting station in an embodiment of a method for accessing a broadcasting station according to the present invention
  • FIG. 4 is a schematic diagram of a broadcast site coverage information broadcast by a broadcast site in a multi-frequency network.
  • FIG. 1 is a schematic structural diagram of a receiving end of a hardware operating environment according to an embodiment of the present invention.
  • the receiving end may include a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002.
  • the communication bus 1002 is used to implement connection and communication between these components.
  • the user interface 1003 may include a display, an input unit such as a keyboard, and the optional user interface 1003 may further include a standard wired interface and a wireless interface.
  • the network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).
  • the memory 1005 may be a high-speed RAM memory or a non-volatile memory. memory), such as disk storage.
  • the memory 1005 may optionally be a storage device independent of the foregoing processor 1001.
  • FIG. 1 does not constitute a limitation on the receiving end, and may include more or less parts than shown in the figure, or some parts may be combined, or different parts may be arranged.
  • the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a broadcasting station access program.
  • the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server;
  • the user interface 1003 is mainly used to connect to the client (user) and perform data communication with the client;
  • the controller 1001 can be used to call a broadcasting station access program stored in the memory 1005 and perform the following operations:
  • the processor 1001 may call a broadcast site access program stored in the memory 1005, and further perform the following operations:
  • the current sector of the receiving end is determined according to the azimuth of the receiving end relative to each broadcasting station and the sector division information of each broadcasting station included in the broadcasting site coverage information.
  • the processor 1001 may call a broadcast site access program stored in the memory 1005, and further perform the following operations:
  • the broadcasting station to which the currently located sector belongs is the best broadcasting site.
  • the processor 1001 may call a broadcast site access program stored in the memory 1005, and further perform the following operations:
  • the receiving end is obtained according to the coverage distance of each currently located sector and the distance between the receiving end and the broadcasting station to which each currently located sector belongs.
  • the entry scale relative to each current sector
  • the broadcasting station to which the sector currently located corresponding to the maximum entry scale belongs is the best broadcasting station.
  • the processor 1001 may call a broadcast site access program stored in the memory 1005, and further perform the following operations:
  • the broadcasting station corresponding to the currently received broadcasting signal is not the best broadcasting station, obtaining the signal frequency of the best broadcasting station;
  • Stop receiving the current broadcast signal and receive the broadcast signal of the best broadcast station through the signal frequency of the best broadcast station.
  • the processor 1001 may call a broadcast site access program stored in the memory 1005, and further perform the following operations:
  • the receiving end has a multi-channel simultaneous receiving function, then receiving the current broadcast signal through the first receiving channel, and detecting whether the second receiving channel can receive the signal of the best broadcasting station through the signal frequency of the best broadcasting station. Broadcast signal
  • the second receiving channel can receive the broadcasting signal of the best broadcasting station through the signal frequency of the best broadcasting station, stop receiving the current broadcasting signal through the first receiving channel, and use the second receiving channel
  • the signal frequency of the best broadcast station receives a broadcast signal of the best broadcast station.
  • the processor 1001 may call a broadcast site access program stored in the memory 1005, and further perform the following operations:
  • the receiving end is in a mobile state, set a target duration and start timing. When the timing reaches the target duration, obtain new current location information of the receiving end and broadcast station coverage information, and broadcast the new current location information and broadcast information.
  • the site coverage information is used as current location information and broadcast site coverage information, and a step of determining a current sector of the receiving end based on the current location information and the broadcast site coverage information is performed.
  • the processor 1001 may call a broadcast site access program stored in the memory 1005, and further perform the following operations:
  • the receiving end If the receiving end is in a moving state, obtain a moving speed of the receiving end, set a target duration based on the moving speed, and start timing.
  • FIG. 2 is a schematic flowchart of a first embodiment of a method for accessing a broadcasting station according to the present invention.
  • the method for accessing a broadcast site includes:
  • Step S10 Acquire the current location information and broadcast site coverage information of the receiving end, and determine the current sector where the receiver is located based on the current location information and broadcast site coverage information;
  • the broadcasting station coverage information includes: a multi-frequency network network number, a signal frequency of each broadcasting station in the multi-frequency network, a location of each broadcasting station (such as latitude and longitude coordinates), and effective signal coverage area information of each broadcasting station.
  • Method 1 for the receiving end to obtain coverage information of the broadcasting station is
  • Table 1 is a schematic table of coverage information of a broadcasting station in a multi-frequency network.
  • the coverage information of each broadcast site in the multi-frequency network is in the form of information shown in Table 1, and constitutes the broadcast site coverage information described in step S10.
  • the broadcast site coverage information can be generated on a terminal, and then Data transmission (wired transmission, wireless transmission), sending broadcast station coverage information to the receiving end.
  • each broadcast site broadcasts different broadcast site coverage information.
  • the broadcast site coverage information includes: the multi-frequency network network number, the current site information, the number of neighboring stations N, and the information of the neighboring stations.
  • FIG. 4 is a schematic diagram of a format of broadcast site coverage information broadcast by a broadcast site in a multi-frequency network.
  • Table 2 is a schematic table of broadcast site coverage information broadcast by a broadcast site in a multi-frequency network.
  • Multi-frequency network number 32bits
  • a plurality of broadcast transmitting stations form a multi-frequency network, and each multi-frequency network has a unique identification number, which can be expressed in sections according to regions, services, and the like. Because it involves national standardization, the present invention does not limit its specific format.
  • Current site number 8bits The identification number of the broadcast transmitting station to which the currently received signal belongs.
  • Current station signal frequency 8bits 100kHz is the interval, which means all frequency points in the range of 87MHz ⁇ 108MHz.
  • Number of neighbor stations N 8bits The number of other sites adjacent to the current site that belong to the same multi-frequency network. Neighbor station number, neighbor station signal frequency, neighbor station latitude and longitude coordinates, neighbor station sector number, neighbor station sector azimuth, neighbor station sector coverage distance Refer to the parameter digits of the above current station Refer to the description of the current site above.
  • the current location information of the receiving end may be obtained by a common navigation and positioning method.
  • determining the current sector of the receiving end based on the current location information and the coverage information of the broadcasting station includes: :
  • the current sector of the receiving end is determined according to the azimuth of the receiving end relative to each broadcasting station and the sector division information of each broadcasting station included in the broadcasting site coverage information.
  • the current location information of the receiving end and the location information of the broadcasting station can both be obtained by satellite positioning. They both belong to the ECEF coordinate system (geocentric and solid-fixed coordinate system).
  • the ENU coordinate system can be established using the latitude and longitude coordinates of the broadcasting station as the origin (East-North-Sky coordinate system, that is, the station center coordinate system), the ECEF coordinates of the receiving end are converted to this ENU coordinate system, and the baseline distance (that is, the distance from the receiving end to the broadcasting station), azimuth, and elevation can be easily obtained. And other data.
  • This calculation process is a public technology and is not the focus of the present invention.
  • the location information of each broadcasting site included in the broadcasting site coverage information is: location information of broadcasting site A, location information of broadcasting site B, and location information of broadcasting site C.
  • the azimuth angle ⁇ 1 of the receiving end relative to the broadcasting station A, the azimuth angle ⁇ 2 of the receiving end relative to the broadcasting station B, and the azimuth angle ⁇ 3 of the receiving end relative to the broadcasting station C can be obtained.
  • the sector division information of broadcast site A (azimuth of each sector in broadcast site A and the coverage distance of each sector) included in the coverage information of broadcast site
  • the sector division information of broadcast site B (each sector in broadcast site B)
  • the azimuth of the area and the coverage distance of each sector) and the sector division information of the broadcast site C (the azimuth of each sector in the broadcast site C and the coverage distance of each sector) determine the current sector of the receiving end.
  • Step S20 Determine an optimal broadcasting site according to the sector in which the current location is located, and receive a broadcasting signal of the optimal broadcasting site.
  • the step of determining the best broadcast site according to the current sector includes:
  • the broadcasting station to which the currently located sector belongs is the best broadcasting site.
  • step S10 if it is determined according to step S10 that the current number of sectors of the receiving end is 1, that is, the receiving end is only in a certain sector of the broadcasting site A, the broadcasting site A is regarded as the best broadcasting site; If the terminal is only in a certain sector of the broadcast site B, the broadcast site B is regarded as the best broadcast site; or if the receiver is only in a certain sector of the broadcast site C, the broadcast site C is regarded as the best broadcast site.
  • the number of currently located sectors is greater than 1, according to the coverage distance of each currently located sector, and the distance between the receiving end and the broadcasting station to which each currently located sector belongs To obtain an entry scale of the receiving end with respect to each currently located sector;
  • the broadcasting station to which the sector currently located corresponding to the maximum entry scale belongs is the best broadcasting station.
  • step S10 if it is determined according to step S10 that the current number of sectors of the receiving end is greater than 1, for example, the receiving end is simultaneously in sector a1 of broadcasting site A1, sector b1 of broadcasting site B, and sector of broadcasting site C c1.
  • K r L n -S r, calculated by the reception end with respect to the entry sector a1 of scale K a, the receiving end for receiving the entry end of the scale K b and scale for the entry sector b1 c1 of sectors K c .
  • L n is the coverage distance of each sector
  • S r is the distance from the receiving end to each broadcasting station.
  • the entry scale K r reflects the extent to which the receiving end has entered the signal coverage area of the site, and the greater the K r , the higher the reliability of the received signal.
  • selecting a maximum value from the K a, K b and K c the broadcast station is currently located and the corresponding sector as the best broadcasting station belongs.
  • K a, K b and K c size set priority broadcast site A, site B and a broadcast station broadcasting the C. For example, if K a ⁇ K b ⁇ K c , the priority of broadcast site A ⁇ the priority of broadcast site B ⁇ the priority of broadcast site C.
  • the distance between the receiving end and each broadcasting station may be directly calculated, and the nearest broadcasting station is used as the best broadcasting station.
  • the step of receiving a broadcast signal of the best broadcast site includes:
  • the broadcasting station corresponding to the currently received broadcasting signal is not the best broadcasting station, obtaining the signal frequency of the best broadcasting station;
  • Stop receiving the current broadcast signal and receive the broadcast signal of the best broadcast station through the signal frequency of the best broadcast station.
  • the signal frequency F of the best broadcasting station is obtained from the broadcasting station coverage information. If the broadcast signal is not currently received, the frequency of the receiving end is adjusted to F, and the broadcast signal of the best broadcast station is started to be received.
  • a broadcast signal is currently being received, it is detected whether the broadcast station corresponding to the currently received broadcast signal is the best broadcast station, and if not, signal switching is performed. That is, the signal is switched only when the current receiving station is different from the best broadcasting station.
  • the receiving end first finds the signal frequency F t of the best station from the coverage information table of the broadcasting station, then stops receiving the signal F c of the current station, and then starts receiving with the new frequency F t .
  • the step of stopping receiving the current broadcast signal and receiving the broadcast signal of the best broadcast station through the signal frequency of the best broadcast station includes:
  • the receiving end has a multi-channel simultaneous receiving function, then receiving the current broadcast signal through the first receiving channel, and detecting whether the second receiving channel can receive the signal of the best broadcasting station through the signal frequency of the best broadcasting station. Broadcast signal
  • the second receiving channel can receive the broadcasting signal of the best broadcasting station through the signal frequency of the best broadcasting station, stop receiving the current broadcasting signal through the first receiving channel, and use the second receiving channel
  • the signal frequency of the best broadcast station receives a broadcast signal of the best broadcast station.
  • the receiving end has the function of receiving two or more channels at the same time, one channel can be used as the main channel and the signal reception of the current site F c can be maintained; the other is the secondary channel, and the best broadcast is attempted. Signal of station F t . If the secondary channel is successfully connected, the secondary channel will continue to work as the primary channel. The original main channel is converted into a secondary channel, and the next time a signal switch is triggered, an attempt is made to connect to a new site. The identity of the primary and secondary channels can be changed at any time, and there is no rollback operation. Highly reliable seamless switching can be realized, and the signal will not be interrupted during signal switching.
  • the current location information and broadcast site coverage information of the receiving end are obtained, and based on the current location information and broadcast site coverage information, the current sector of the receiving end is determined; and based on the current sector, determining A best broadcast site, and receive a broadcast signal from the best broadcast site.
  • the best broadcasting station for the receiving end and receive the broadcasting signal of the best broadcasting station it is possible to automatically select the best broadcasting station for the receiving end and receive the broadcasting signal of the best broadcasting station to ensure the continuous availability of the wireless broadcasting service.
  • the method further includes:
  • the receiving end is in a mobile state, set a target duration and start timing. When the timing reaches the target duration, obtain new current location information of the receiving end and broadcast station coverage information, and broadcast the new current location information and broadcast information.
  • the site coverage information is used as current location information and broadcast site coverage information, and a step of determining a current sector of the receiving end based on the current location information and the broadcast site coverage information is performed.
  • the steps of setting a target duration and starting timing include:
  • the receiving end If the receiving end is in a moving state, obtain a moving speed of the receiving end, set a target duration based on the moving speed, and start timing.
  • the receiving end can learn its own moving speed through the satellite positioning function, and dynamically adjust the trigger period of signal switching according to the moving speed, for example, ranging from 10 to 60 seconds (the faster the speed, the shorter the corresponding trigger period). It enables the receiver to switch broadcast stations in time to obtain the best quality signal, and avoids the risk of signal instability caused by frequent switching.
  • the receiving end repeats steps S10 to S20 to determine the current best site. If the currently receiving site is the best site, the subsequent operation is abandoned and the next trigger is triggered; if the current receiving site is not this The best site, perform the switch operation.
  • an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores a broadcasting station access program, and when the broadcasting station access program is executed by a processor, the broadcasting described above is implemented. Steps of the site access method.
  • the methods in the above embodiments can be implemented by means of software plus a necessary universal hardware platform, and of course, also by hardware, but in many cases the former is better.
  • Implementation Based on such an understanding, the technical solution of the present invention in essence or a part that contributes to the existing technology can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM as described above , Magnetic disk, optical disc), including a number of instructions to enable a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present invention.
  • a terminal device which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

L'invention concerne un procédé d'accès à une station de diffusion, un côté réception et un support de stockage lisible par ordinateur. Le procédé d'accès à une station de diffusion comprend les étapes suivantes : acquisition d'informations d'emplacement actuel du côté réception, et d'informations de couverture de la station de diffusion, et détermination d'un secteur où le côté réception est actuellement localisé, sur la base des informations d'emplacement actuel et des informations de couverture de la station de diffusion (S10) ; détermination de la meilleure station de diffusion selon le secteur actuellement localisé, et réception d'un signal de diffusion de la meilleure station de diffusion (S20). Le procédé permet de sélectionner automatiquement la meilleure station de diffusion pour le côté réception sur la base de l'emplacement du côté réception et des informations de couverture de la station de diffusion, et de recevoir un signal de diffusion de la meilleure station de diffusion de façon à assurer la disponibilité continue de services de diffusion sans fil.
PCT/CN2018/106415 2018-09-12 2018-09-19 Procédé d'accès à une station de diffusion, côté réception et support de stockage lisible par ordinateur WO2020051938A1 (fr)

Applications Claiming Priority (2)

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CN201811065537.0 2018-09-12
CN201811065537.0A CN109168133B (zh) 2018-09-12 2018-09-12 广播站点接入方法、接收端及计算机可读存储介质

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