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Method for achieving time-interleaving and time-deinterleaving in NGB-W communication system

A technology of time interleaving and communication systems, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems that interleaving parameter information cannot be applied, time interleaving parameters cannot be fully applicable, etc.

Active Publication Date: 2014-03-26
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the time interleaving parameters in the DVB-NGH standard cannot be fully applied to the NGB-W standard
The DVB-T2 standard or DVB-SH standard only adopts a single interleaving scheme, so the interleaving parameter information transmitted in the signaling cannot be applied to the NGB-W standard

Method used

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  • Method for achieving time-interleaving and time-deinterleaving in NGB-W communication system
  • Method for achieving time-interleaving and time-deinterleaving in NGB-W communication system
  • Method for achieving time-interleaving and time-deinterleaving in NGB-W communication system

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no. 1 example

[0115] The first embodiment provides a physical layer pipeline PLP to use the current physical layer pipeline PLP in each NGB-W when the number of FEC blocks input in each NGB-W frame period is constant (that is, the input data is a constant bit rate CBR). The time interleaving parameters configured in the post-physical layer L1 signaling of the frame perform time interleaving and detime interleaving.

[0116] Now assume that the current physical layer pipeline PLP inputs constant bit rate data in frames 1 to 5, and there is only one current physical layer pipeline PLP in these 5 frames; the parameter values ​​in the L1 configurable signaling are within these 5 frames Remains unchanged; the parameter values ​​in the L1 dynamic signaling change in each frame, but since the input is constant bit rate data, the number of sub-convolutional interleavers used by the current physical layer pipeline PLP in these 5 frames N CI same.

[0117] Please refer to Table 2, which shows the s...

no. 2 example

[0147] The second embodiment provides that the physical layer pipeline PLP utilizes the physical layer L1 post signal in each NGB-W frame when the number of input FEC blocks changes in each NGB-W frame period (that is, the input data is a variable bit rate VBR). Time interleaving and detime interleaving are performed with the time interleaving parameters configured in the command.

[0148] Now assume that the physical layer pipeline PLP inputs the number of FEC blocks in frames 1 to 5, and there is only one physical layer pipeline PLP in these 5 frames; the parameter values ​​in the L1 configurable signaling remain unchanged in these 5 frames ; The parameter value in the L1 configurable signaling remains unchanged in these five frames; the parameter value in the L1 dynamic signaling changes in each frame.

[0149] Please refer to Table 3, which shows the setting of the time interleaving parameter value of the current physical layer pipe PLP configured in the post-physical laye...

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Abstract

The invention provides a method for achieving time-interleaving and time-deinterleaving in an NGB-W communication system. The method mainly comprises the following steps: time-interleaving parameters required for achieving time-interleaving and eliminating time-interleaving in the NGB-W communication system are added into a physical layer L1 post-signaling region, a transmitting end completes time-interleaving of data of a physical layer pipe (PLP) within each NGB-W frame according to the time-interleaving parameters, a receiving end acquires time-interleaving parameters of the physical layer pipe (PLP) within each NGB-W frame by demodulating an L1 post-signaling to complete time-deinterleaving of data of the corresponding physical layer pipe (PLP) within each NGB-W frame. Compared with the prior art, through the adoption of the method, the effect of uniform or non-uniform time-interleaving inter-frame convolution-interleaving and intra-frame interleaving cascade of unchangeable or changeable input rate data can be achieved, the achieving of a cascade-type time-interleaving plan by the NGB-W communication system is guaranteed, and meanwhile, the flexibility of achieving time-interleaving of the NGB-W communication system is improved.

Description

technical field [0001] The invention relates to the field of radio and television communication, in particular to a method for realizing time interleaving and time interleaving in a next-generation radio and television wireless NGB-W communication system. Background technique [0002] With the rapid development of world economy and culture, the demand of mobile users for information services is increasing rapidly. Relying solely on the traditional broadcasting network or the traditional two-way communication network, it is impossible to realize the optimal transmission of mobile information services. The Next Generation Broadcasting networks-Wireless (NGB-W) communication system can realize the fusion and coexistence of wireless broadcasting and two-way communication. Because of its technical rationality and broad market prospects, it has attracted extensive attention from academia and industry. [0003] The business of the NGB-W communication system is mainly oriented to ...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 杨颖寇亚军田金凤黄飞李明齐
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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