Configuration method of frame structure of digital multimedia wireless broadcasting system

A wireless broadcasting and configuration method technology, applied in the direction of digital transmission system, transmission system, communication between multiple stations, etc., to achieve the effect of meeting transmission capacity and reducing signaling overhead

Active Publication Date: 2014-12-17
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for configuring the frame structure of the digital multimedia wireless broadcasting syst

Method used

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  • Configuration method of frame structure of digital multimedia wireless broadcasting system
  • Configuration method of frame structure of digital multimedia wireless broadcasting system
  • Configuration method of frame structure of digital multimedia wireless broadcasting system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0062] The number of carrier frequencies of the digital multimedia wireless broadcasting system of this embodiment is R=3 (the main carrier frequency is not configured), and it supports fixed broadcasting, satellite broadcasting and mobile broadcasting on the three carrier frequencies in turn, and the allocation period T s =1s, its initial parameters and frame structure parameters are:

[0063]

[0064] The multi-carrier frequency frame structure allocation pattern within an allocation period is obtained, and each carrier frequency transmits three types in sequence according to the order of broadcast frame type ID from small to large (here it is considered to be in the order of fixed broadcast, satellite broadcast, and mobile broadcast) The broadcast frames of each carrier frequency have the same initial frame start time. The carrier frequency RF k The starting time of the initial frame of (k=2, 3) relative to the carrier frequency RF k-1 Pan backwards in turn time, the...

Embodiment 2

[0074] The distribution period T of the digital multimedia wireless broadcasting system of this embodiment s =1s; Carrier frequency R=3, and configure carrier frequency RF 1 The main carrier frequency, the repetition period of the main carrier frequency frame structure is half of the allocation period, and supports three types of broadcast frames: fixed broadcast, satellite broadcast and mobile broadcast, which are transmitted sequentially on the three carrier frequencies; its initial parameters and frame The structure parameters are:

[0075]

[0076]

[0077] The multi-carrier frame structure allocation pattern within one allocation period is obtained. The broadcast frames carried on each carrier frequency are arranged in the order of fixed broadcast, satellite broadcast, and mobile broadcast, and the initial frame start time of each carrier frequency is the same. The carrier frequency RF k The starting time of the initial frame of (k=2, 3) relative to the carrier fr...

Embodiment 3

[0084] The distribution period T of the digital multimedia wireless broadcasting system of this embodiment s =1s; the number of carrier frequencies R=4, and configure the carrier frequency RF 1 The main carrier frequency, the repetition period of the frame structure of the main carrier frequency is half of the allocation period; it supports two types of wireless broadcast frames, fixed broadcast and satellite broadcast, which are transmitted sequentially on four carrier frequencies; its initial parameters and frame structure parameters are:

[0085]

[0086] A multi-carrier frequency frame structure allocation pattern within an allocation period is obtained, each carrier frequency transmits broadcast frames of fixed broadcasting and satellite broadcasting sequentially, and the initial frame start time of each carrier frequency is the same. The carrier frequency RF k (k=2, 3, 4) The starting time of the initial frame is relative to the carrier frequency RF k-1 Pan backward...

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Abstract

The invention provides a configuration method of a frame structure of a digital multimedia wireless broadcasting system. The configuration method comprises the steps of: transmitting broadcasting frames in different types on multiple carrier frequencies by the digital multimedia wireless broadcasting system, calculating frame structure parameters based on initial parameters of the digital multimedia wireless broadcasting system to obtain a distribution pattern of a multi-carrier-frequency frame structure; adjusting the start time of an initial frame of each carrier frequency; aiming at a broadcasting frame in each type, building a frame structure topological graph by utilizing a graph method, coloring the frame structure topological graph by using a coloring algorithm and judging if the coloring is effective; if not, adjusting the parameters of the frame structure, rebuilding the frame structure topological graph and coloring; if so, finishing the configuration of the frame structure. The configuration method of the frame structure of the digital multimedia wireless broadcasting system supports mixed transmission of the broadcasting frames in different types, so that frequency-hopping reception of a wireless broadcasting signal by a single-tuning receiver is realized and a frequency diversity gain is obtained; meanwhile different demands of data of wireless broadcasting frames in different types on a transmission flow are satisfied, and a statistical multiplexing gain is obtained.

Description

technical field [0001] The invention relates to the field of digital multimedia wireless broadcasting, in particular to a method for configuring a frame structure of a digital multimedia wireless broadcasting system. Background technique [0002] As an important part of my country's information infrastructure, the radio and television network is the most popular information tool and the most convenient information carrier to reach thousands of households. After decades of development, in the field of wireless broadcasting and television, my country has basically formed a standard based on terrestrial digital television multimedia broadcasting (DTMB: ​​Digital Television Terrestrial Multimedia Broadcasting) and China Mobile Multimedia Broadcasting (CMMB: China Mobile Multimedia Broadcasting). The first generation of wireless broadcasting and television service standard system. With the continuous popularization of wired triple play services and cable TV wireless transmission ...

Claims

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Application Information

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IPC IPC(8): H04N21/2385H04N21/61H04L5/00H04B7/26
Inventor 葛丽田金凤寇亚军李明齐缪军封松林
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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