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System and method for burst separation and extended interleaving length

一种分配帧、物理层管道的技术，应用在传输系统、多频码系统、调制载波系统等方向，能够解决传输容量浪费等问题

Active Publication Date: 2011-01-05
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the time, the reserved time slots are not completely filled, resulting in wasted transmission capacity

Method used

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  • System and method for burst separation and extended interleaving length
  • System and method for burst separation and extended interleaving length
  • System and method for burst separation and extended interleaving length

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Embodiment Construction

[0017] Embodiments of the present invention relate to the second generation terrestrial digital video broadcasting (DVB-T2) system. There are two main variants of the T2. The first is Variant B (or FF mode) for a single radio frequency (RF) channel (NUM_RF=1), and the second is for using multiple RF channels (NUM_RF=2, 3 in the exemplary embodiment) , 4, 5, 6, but not limited to) variant C (or TFS mode) of the system. Variant C is the same as Time-Frequency Slicing (TFS). In both variants, the capacity of the transport channel is shared between multiple physical layer pipes (PLP) by using time division multiplexing (TDM). Each PLP can have its own robustness (eg, modulation, code rate) and bit rate. A PLP can host one or more services. The instantaneous bit rate of the PLP in one frame interval can be changed according to the bit rate change of the service. However, the total bit rate of the PLP cannot exceed the bit rate of the transmission system.

[0018] Because the ...

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Abstract

A method includes allocating frame capacity between physical layer pipes dividing a frame and physical layer pipes into a plurality of subframes, wherein each subframe carries one burst from each physical layer pipe; selectively time shifting the plurality of bursts such that a defined time shift exists between corresponding bursts in each subframe within the frame; and appending the subframes after each other in a sequence. Each frame may include two or more radio frequency channels, each radio frequency channel including subframes. The method may further include selectively time shifting one or more of the radio frequency channels such that a defined time shift exists between corresponding radio frequency channels in each frame; and for any subframes of a radio frequency channel which have been selectively shifted beyond the end of the frame, cyclically shifting such subframes to the beginning of the frame.

Description

technical field [0001] The present invention generally relates to the transfer of data in a transmission system. More specifically, the invention relates to the use of Time-Frequency Slicing (TFS) for data transmission. Background technique [0002] Digital broadband broadcast networks enable end users to receive digital content including video, audio, data, and more. Using a mobile terminal, a user can receive digital content through a wireless digital broadcast network. [0003] The capacity of the radio transmission channel, eg in broadcast systems, can be divided between different services by using Time Division Multiplexing (TDM). Each service reserves a time slot in the TDM frame, which results in a fixed bit rate. The bit rate is determined by the size of the slot and the interval of frames. Some services (eg, real-time video services) may have variable bit rates. [0004] To ensure that a stream always fits in the reserved time slot, TDM capacity is typically re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/00H04J4/00H04H20/72H04L27/26
CPCH04L27/2607H04L5/0044H04H20/30H04H20/33H04L5/0007H04H20/72H04J4/00H04B7/2625
Inventor J·韦斯玛H·佩科宁H·希马宁
Owner SAMSUNG ELECTRONICS CO LTD
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