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34 results about "Next generation broadcasting" patented technology

Next Generation Radio and Television Wireless Network System and Channel Adaptive Adjustment Method

The invention discloses a wireless NGB (next generation broadcasting network) system with an interactive function and an adaptive regulating method of channels. In the method, a broadcasting base station encodes and modulates program data according to channel state information, and then transmits a wireless program signal to a wireless terminal; the wireless terminal receives the wireless program signal and collects channel state information, and feeds the channel state information back to an interactive base station in a wireless signal way; the interactive base station transmits the channel state information to a broadcasting base station through a sub-system of a broadcasting backbone network; and the broadcasting base station regulates the encoding and modulating mode according to the received channel state information, encodes and modulates the program data provided by the sub-system of the broadcasting backbone network, and transmits a wireless program signal to the wireless terminal in a broadcasting or multicasting mode. According to the system and the method, channel information is fed back in an interactive mode, so that the purpose of adaptively regulating channel encoding and modulation can be achieved according to the channel information.
Owner:ZTE CORP

Wireless automatic meter reading system based on NGB (Next Generation Broadcasting) and control method thereof

InactiveCN102184629ARealization of automatic meter readingRealize automatic chargingTransmission systemsSelective content distributionInformation processingAvometer
The invention discloses a wireless automatic meter reading system based on an NGB (Next Generation Broadcasting) and a control method thereof, belonging to the field of digital information transmission and processing based on a broadcasting and television network and a short-distance wireless communication network. The system comprises an information acquiring device, an information receiving and transmitting device and an information processing device, wherein the information acquiring device is used for acquiring avometer information and transmitting the acquired avometer information to the information receiving and transmitting device; the information receiving and transmitting device is used for receiving the avometer information and transmitting the avometer information to the information processing device through a broadcasting and TV wired bidirectional network; the information processing device is used for transmitting the received avometer information to an information processing center in a network; and the information processing center performs bidirectional communication with the information receiving and transmitting device through the broadcasting and TV wired bidirectional network. In the invention, a wireless receiving and transmitting module is connected to the traditional interface of a set-top box or a digital television, and a user operation interface continues to use the conventional television interaction charging system, so that a user can inquire information on an avometer, payment, account bills and the like through the television.
Owner:COMMUNICATION UNIVERSITY OF CHINA

Method of forming position patterns of reserved subcarriers of NGB-W (Next Generation Broadcasting-Wireless) system

The invention provides a method of forming position patterns of reserved subcarriers of an NGB-W (Next Generation Broadcasting-Wireless) system. Each physical frame in the NGB-W system comprises signaling symbols, data symbols and frame tail symbols, and each kind of symbols is provided with different pilots. The signaling symbols include signaling pilots. The data symbols include scattered pilots, edge pilots and continuous pilots. The frame tail symbols include edge pilots and frame tail pilots. The method comprises the following steps that the positions of the reserved subcarriers are selected from the non-pilot positions of the signaling symbols, the data symbols and the frame tail symbols, wherein positions of the scattered pilots and the continuous pilots, positions three subcarriers right to the continuous pilots, positions six subcarriers right to the continuous pilots, positions nine subcarriers right to the continuous pilots, positions of the edge pilots, and positions of 12 subcarriers on each left edge of the two sub bands of the NGB-W system are removed from the data symbols. According to the method, an effect of reducing PAPR (Peak to Average Power Ratio) can be well achieved by occupying 1% of subcarriers only.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI

Up channel noise intelligent recognition method of broadcasting television access network

The invention belongs to the field of broadcasting television network two-way transmission health monitoring, and relates to an up channel noise intelligent recognition method of a broadcasting television access network. The method comprises acquiring the real-time spectral data of the up channel of a NGB (next generation broadcasting) network; classifying the main noise of the up channel of the NGB network to thermal noise, narrow-band continuous wave interference, and wide-band pulse interference, selecting some fields from the real-time spectral data of the up channel of the NGB network, and determining the type of the main noise of each field; extracting the characteristic value of a plurality of frequency points of each field; constructing a three-layer BP (back propagation) neutral network; training the BP neutral network by using LM (levenberg-marquart) algorithm to obtain a neutral network model for intelligently recognizing the noise of the up channel of the NGB network; and effectively determining the noise type of the newly-inputted real-time spectral data of the NGB up channel by the neutral network model. The up channel noise intelligent recognition method provided by the invention has a fault diagnosis accuracy of 85% or above, and has high practical value.
Owner:TIANJIN UNIV

Next generation broadcasting network (NGB) access network architecture system and butt joint method of Ethernet over coax (EOC) network management system and business operation support system (BOSS)

The invention provides a next generation broadcasting network (NGB) access network architecture system and a butt joint method of an Ethernet over coax (EOC) network management system and a business operation support system (BOSS). The NGB access network architecture system comprises a business management system, an authentication management system connected with the business management system, a call-center system connected with the authentication management system, three China national ratio (CNR) servers which are connected with the authentication management system and respective serve customer terminal equipments with the types of cable modems, personal computers and set top boxes, and a simple network management protocol (SNMP) management system which is connected with the authentication management system and used for carrying out SNMP configuration on the various customer terminal equipments; and the architecture system also comprises a butt joint management system used for taking part in the butt joint with the authentication management system so as to complete authentication, optical line terminal management equipment connected with all the CNR servers and the SNMP management system, EOC local side management equipment connected with the optical line terminal management equipment, and customer terminal access equipment connected with the EOC local side management equipment. The architecture system and the butt joint method enable all EOC access technologies to be suitable for the BOSS, thus reducing the butt joint cost and the technical risk, and reducing the access difficulty.
Owner:上海云视科技股份有限公司

Multimedia system for Android smart television set

The invention relates to a multimedia system for an Android smart television set. The multimedia system comprises a digital television service module, a television operating system media playing module and a digital television playing module. The digital television service module is used for obtaining and storing program information relevant to digital video broadcasting flow. The television operating system media playing module is used for obtaining the program information of the digital video broadcasting flow from the digital television service module and carrying out reconstitution on the media resource locators according to the program information, wherein the program information of the digital video broadcasting flow corresponds to media resource locators transmitted through NGB-H/J application. The digital television playing module is used for carrying out data structure de-encapsulation on the reconstituted locators, and playing the digital video broadcasting flow according to the de-encapsulated data. The multimedia system for the Android smart television set integrates the playing function of digital video broadcasting into an Android multimedia system, and achieves unified call of upper layer application and unified management on various types of media playing by an Android framework layer, and can well support the media functions in radio and television standards of the next generation.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI +1

Method and terminal for acquiring emergency event

The embodiment of the invention discloses a method and terminal for acquiring an emergency event. The method comprises the following steps of: monitoring an emergency broadcast linkage descriptor in a network in real time and acquiring an update mark in the emergency broadcast linkage descriptor; according to the update mark, judging whether an emergency broadcast event described by the emergency broadcast linkage descriptor can be updated; when the emergency broadcast event can be updated, acquiring and analyzing emergency event description information in the emergency broadcast linkage descriptor; and displaying the emergency event described by the emergency event description information. The invention aims to provide the method and the terminal for acquiring the emergency event, which can be used for implementing acquisition of the corresponding emergency event from an emergency broadcast server which simultaneously faces a DVB (Digital Video Broadcasting) network, a bandwidth IP (Internet Protocol) network and combination of the DVB network and the bandwidth IP network and is used for issuing the emergency event. The information sharing of cross-platform, even internetwork is realized. The hardware cost of a front end is saved. The service contents of the front end are enriched. The reference is provided for developing an NGB (Next Generation Broadcasting) service.
Owner:SHENZHEN SKYWORTH DIGITAL TECH CO LTD +1

Radio and television access network architecture system and the connection method between eoc network management system and boss system

The invention provides a next generation broadcasting network (NGB) access network architecture system and a butt joint method of an Ethernet over coax (EOC) network management system and a business operation support system (BOSS). The NGB access network architecture system comprises a business management system, an authentication management system connected with the business management system, a call-center system connected with the authentication management system, three China national ratio (CNR) servers which are connected with the authentication management system and respective serve customer terminal equipments with the types of cable modems, personal computers and set top boxes, and a simple network management protocol (SNMP) management system which is connected with the authentication management system and used for carrying out SNMP configuration on the various customer terminal equipments; and the architecture system also comprises a butt joint management system used for taking part in the butt joint with the authentication management system so as to complete authentication, optical line terminal management equipment connected with all the CNR servers and the SNMP management system, EOC local side management equipment connected with the optical line terminal management equipment, and customer terminal access equipment connected with the EOC local side management equipment. The architecture system and the butt joint method enable all EOC access technologies to be suitable for the BOSS, thus reducing the butt joint cost and the technical risk, and reducing the access difficulty.
Owner:上海云视科技股份有限公司

Generation method of preamble symbol in next generation radio and television wireless communication system

The invention provides a generation method for a preamble in a next generation broadcast wireless (NGB-W) communication system. The generation method includes the following steps that quadrature modulation is conducted on leading signaling information; the DBPSK modulation sequence of the preamble is scrambled to obtain the scrambled sequence of the preamble; the scrambled sequence of the preamble is placed on 768 effective subcarriers to generate a main body A; the main body is divided into two parts, frequency offset is conducted on the two parts to generate a postfix and a prefix, and finally the preamble is generated by the prefix, the main body and the postfix. A 4096-point shift-C-A-B structure is adopted for the time domain structure of the preamble, a front frequency offset repeating part and a rear frequency offset repeating part are adopted for the structure, a receiving end rapidly finds signals in the time domain, and OFDM symbol timing synchronization and decimal frequency offset estimation are achieved. By the adoption of 4096 points, on one hand, 12-bit signaling information can be carried; on the other hand, the number of sample points is larger than that of 2048 points, and noise suppression t and synchronization performance improvement are facilitated in a synchronization algorithm.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI

A multimedia system for android smart TV

The invention relates to a multimedia system for an Android smart television set. The multimedia system comprises a digital television service module, a television operating system media playing module and a digital television playing module. The digital television service module is used for obtaining and storing program information relevant to digital video broadcasting flow. The television operating system media playing module is used for obtaining the program information of the digital video broadcasting flow from the digital television service module and carrying out reconstitution on the media resource locators according to the program information, wherein the program information of the digital video broadcasting flow corresponds to media resource locators transmitted through NGB-H / J application. The digital television playing module is used for carrying out data structure de-encapsulation on the reconstituted locators, and playing the digital video broadcasting flow according to the de-encapsulated data. The multimedia system for the Android smart television set integrates the playing function of digital video broadcasting into an Android multimedia system, and achieves unified call of upper layer application and unified management on various types of media playing by an Android framework layer, and can well support the media functions in radio and television standards of the next generation.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI +1

Formation method of reserved subcarrier position pattern for ngb‑w system

The invention provides a method of forming position patterns of reserved subcarriers of an NGB-W (Next Generation Broadcasting-Wireless) system. Each physical frame in the NGB-W system comprises signaling symbols, data symbols and frame tail symbols, and each kind of symbols is provided with different pilots. The signaling symbols include signaling pilots. The data symbols include scattered pilots, edge pilots and continuous pilots. The frame tail symbols include edge pilots and frame tail pilots. The method comprises the following steps that the positions of the reserved subcarriers are selected from the non-pilot positions of the signaling symbols, the data symbols and the frame tail symbols, wherein positions of the scattered pilots and the continuous pilots, positions three subcarriers right to the continuous pilots, positions six subcarriers right to the continuous pilots, positions nine subcarriers right to the continuous pilots, positions of the edge pilots, and positions of 12 subcarriers on each left edge of the two sub bands of the NGB-W system are removed from the data symbols. According to the method, an effect of reducing PAPR (Peak to Average Power Ratio) can be well achieved by occupying 1% of subcarriers only.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI

Wireless NGB (next generation broadcasting network) system and adaptive regulating method of channels

The invention discloses a wireless NGB (next generation broadcasting network) system with an interactive function and an adaptive regulating method of channels. In the method, a broadcasting base station encodes and modulates program data according to channel state information, and then transmits a wireless program signal to a wireless terminal; the wireless terminal receives the wireless program signal and collects channel state information, and feeds the channel state information back to an interactive base station in a wireless signal way; the interactive base station transmits the channel state information to a broadcasting base station through a sub-system of a broadcasting backbone network; and the broadcasting base station regulates the encoding and modulating mode according to the received channel state information, encodes and modulates the program data provided by the sub-system of the broadcasting backbone network, and transmits a wireless program signal to the wireless terminal in a broadcasting or multicasting mode. According to the system and the method, channel information is fed back in an interactive mode, so that the purpose of adaptively regulating channel encoding and modulation can be achieved according to the channel information.
Owner:ZTE CORP
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