Zte Corporation

Xiangbiao Yan

Biao Wang

Jun Xu

Jin Xu

Zhifeng Yuan

Liujun Hu

Song Li

Yuanli Fang

Hua Jiang

Hailong Wen

Daxiong Xie

Yizhou Sun

Xiaoguang Zhu

An implementation method and system of a virtual private network (VPN) are provided in the invention, wherein, the VPN dedicated mapping table of the VPN is stored in the mapping plane in the identity and location separation network, and it is determined whether to achieve the communication between the VPN end host users in the VPN or not according to the VPN dedicated mapping table, thereby the VPN is efficiently achieved in the identity and location separation network, meeting the user requirements for the VPN, eliminating the influence of the identity and location separation technical solution on the traditional VPN service, and reducing the changes on the existing devices and software tools due to the implementation of VPN.

Implementation method and system of virtual private network

The present invention discloses a method for analyzing data, which comprises: judging whether the read of each multiplexing block in a media unit has been completed according to the total length of the media unit and the length of the multiplexing block when reading the multiplexing blocks in the media unit; the media unit is a video unit, an audio unit or a data unit. The present invention imposes the structural features of multiplexing blocks, when the receiving quality of the mobile media broadcasting terminal is well, which dispenses with judging whether the multiplexing block is the beginning multiplexing block or the ending multiplexing block according to the beginning ID code and the ending ID code, analyzing with type and data unit type field, and CRC. Therefore, the multiplexing block analyzer steps and the procedure of data process of the receiver are predigested. It performs quick analyzing.

Method and device for analyzing data

This invention provides a method and a system for transmitting an encrypted control message based on the mobile multimedia broadcast. The said method includes: encapsulating the media data of the program and the encrypted control message in the multiplex sub-frames of the multiplex frame; and setting the encrypted control message identifier in the header of multiplex sub-frames for indicating whether the encrypted control message is included in the multiplex sub-frames. The mobile multimedia system sends the media data and the encrypted control message out through the multiplex frame.

Method and a system for transmitting encrypted control message based on mobile multimedia broadcast

The present invention provides a device and method for interleaved encoding RS code, the RS code used being RS (N, K, S). The method comprises: firstly, writing the data in the data packets to be RS interleaved encoded into the information region of the RS code byte interleaver column-by-column in turn; then, constructing the data of each row of the check region based on the data written into the information region; finally, performing cyclic shifting processing on the data of the check region, and reading out the data of the check region in the RS code byte interleaver column-by-column in turn. The present invention can be used to improve the performance of the entire data packet outputted, thereby enhancing the reliability of the data link layer, by evenly spreading the areas with a filled value of 0 in the last column of the information region that is filled with valid information and by performing cyclic shifting processing on the data of the check region so that the data of that region offer larger time span and good diversity effect when outputted.

Device and method for interleaved encoding RS code

The present invention discloses an encoding method and device for Low Density Generator Matrix Codes (LDGC). Wherein, the method comprises: construct an LDGC mother code set using a plurality of LDGC with code rate Rand different code lengths, wherein the LDGC mother code set has a uniform base matrix G={(g)}; obtain length L of an intermediate variable according to a relationship between length K of an information bit sequence to be encoded in the LDGC mother code set and length L of the intermediate variable; obtain an expanding factor z for processing the base matrix using the length of the intermediate variable and the number of rows in the base matrix; process the base matrix using the expanding factor to obtain a binary generator matrix Gtmp, the front L rows and front L columns of which compose a triangular matrix; modify the binary generator matrix to obtain a modified binary generator matrix; take a matrix Gcomposed of L rows and the front N+L&#x2212;K columns of the modified binary generator matrix as a generator matrix of the information bit sequence to encode the information bit sequence.

Encoding method and device for low density generator matrix codes

A service transmitting method of mobile multimedia broadcasting network is disclosed. The sending side of the system adds an updating indication of multiplexing configuration information in the service information slice for indicating whether the information of a next frame is updated, sends information to the receiving terminal, and sends an updating indication of information to the terminal in advance; the terminal acquires the service needed according to the information received at the beginning and monitors whether the information is going to change by monitoring the updating indication, the terminal stops monitoring and records the updating indication in case monitors an updating indication; for receiving other services, the terminal inquires whether any updating notice is recorded, if recorded, the terminal re-acquires the current information, according to which the service needed is acquired and at the same time removes the original updating indication and re-starts to monitor the updating indication of information.

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Shenzhen, China

Xiangbiao Yan