34 results about "Next generation broadcasting" patented technology

A Next Generation Broadcast Platform (NGBP) is disclosed that utilizes 5G software-defined networking (SDN) and network function virtualization (NFV) technologies. The NGBP is designed to enable a new paradigm for broadcasters, wherein the model of fixed wireless spectrum access granted only to the licensees of the spectrum is replaced by a flexible model in which licensed spectrum is pooled together and allocated dynamically to broadcast licensees as well as outside tenants. The NGBP is implemented using SDN / NFV technology, and includes a broadcast market exchange (BMX) entity that allocates the spectrum between tenants based on service level agreements (SLAs) with those users. The NGBP also includes an internet protocol (IP) core and a broadcast centralized radio access network (BC-RAN) which apply the major network functions to broadcaster content in accordance with the determinations of the BMX. The SDN / NFV implementation offers several distinct advantages over NGBP implemented with dedicated network hardware.

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.

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.

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.

The present invention provides a method for time slicing and resource mapping of type 2 physical layer pipeline data in the next-generation broadcast television wireless network NGB-W system, which is characterized in that it includes: The unit words in the type 2 physical layer pipeline are mapped to multiple time sub-slices in the current NGB-W frame, and complete the time slicing of data in all type 2 physical layer pipelines corresponding to the current NGB-W frame; Map unit words in all type 2 physical layer pipes in the current NGB‑W frame to OFDM data bearing units, and complete resource mapping of data in all type 2 physical layer pipes in the current NGB‑W frame. Compared with the prior art, the time slicing and resource mapping method of the present invention can realize that after time interleaving, type 2 physical layer pipelines are mapped to the corresponding frame in the case where the number of unit words cannot be divisible by the number of time sub-slices, Perform time slicing and resource mapping on the data of type 2 physical layer pipelines.

The invention discloses a wave beam forming method of a next-generation broadcast television net, a system and an interacting base station, wherein the wave beam forming method comprises the following steps: the interacting base station receives channel information from a terminal and position information of the terminal; and the interacting base station sends the channel information and the position information of the terminal to a broadcast base station, so that the broadcast base station adjusts antenna parameters according to the channel information and the position information of the terminal. In the wave beam forming method, the power of a transmitter can be reduced and the receiving quality can be improved.

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.

The invention provides a design method for the pilot frequency in a next generation broadcast wireless (NGB-W) communication system. The design method at least includes the following steps that a pilot frequency unit value of an OFDM symbol in each NGB-W frame is generated by a pilot frequency reference sequence in a modulation mode, wherein m is a frame index, l is an OFDM symbol index, and k is an effective subcarrier index; the reference sequence is generated by a symbol level pilot frequency PRBS and a frame level PRBS together. According to the design method for the pilot frequency in the NGB-W communication system, various types of wireless channel scenes are considered, wherein the signaling pilot frequency and the frame tail pilot frequency are high enough in density and can be used for channel estimation of severe channel environments under the limit borne by the system; the timed slender synchronization performance and decimal carrier slender synchronization performance of a continuous pilot frequency system are basically equivalent in the NGB-W system and a DVB-T2.