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Single-frequency broadcasting receiving method based on TD-SCDMA network

A TD-SCDMA, broadcast receiving technology, applied in the field of mobile broadcast business, can solve problems such as incompatibility with broadcast business, and achieve the effect of reducing workload and power consumption

Active Publication Date: 2008-08-06
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above networking methods are mainly used to meet the communication-related needs of mobile users such as voice and data services, and are not suitable for broadcasting services.

Method used

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  • Single-frequency broadcasting receiving method based on TD-SCDMA network
  • Single-frequency broadcasting receiving method based on TD-SCDMA network
  • Single-frequency broadcasting receiving method based on TD-SCDMA network

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] The midamble formation of the TD-SCDMA single frequency network broadcast service is as follows: the single frequency network adopts the same basic midamble. At this time, from the TD-SCDMA single frequency network supporting mobile TV broadcasting, the basic midamble The downlink pilot code no longer has the concept of a code group; the pilot code in each time slot in the single frequency network has only one cyclic shift, and the cyclic shift mode no longer forms a corresponding relationship with the number of code channels; the length of the cyclic prefix of the midamble code is configurable , to accommodate large transmission delays from different base stations.

[0019] The midamble is formed as image 3 shown. by cyclic prefix 102 part L max +16 chips, and basic midamble 101 part 128-L max chip composition. Among them, L max It is a configurable number, generally between -8 and 48, preferably 16. In the midamble part of 144 chips, the basic midamble 101 part...

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PUM

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Abstract

The invention discloses a single-frequency broadcast receiving method based on a TD-SCDMA network, wherein, the TD-SCDMA network comprises two layers of networks; one layer is a TD-SCDMA mobile communication network and the other layer is a TD-SCDMA single-frequency broadcast network; the TD-SCDMA single-frequency broadcast network is independent of the TD-SCDMA mobile communication network, and realizes broadcast on an independent frequency point, or a network which realizes partial mobile communication on a frequency point of the TD-SCDMA network; a TD-SCDMA broadcast single-frequency transmitting network is realized by a partial time slot; channel estimation is performed by a mobile terminal at first and then signal detection is performed, wherein, signal detection adopts an equalization algorithm to realize TD-SCDMA receipt and demodulation. The single-frequency broadcast receiving method based on the TD-SCDMA network can effectively reduce the work load of calculation and reach the same effect as the prior art.

Description

technical field [0001] The present invention relates to a mobile broadcasting service based on TD-SCDMA network, such as a receiving method of mobile TV, in particular to a broadcasting receiving method of a mobile terminal under the single-frequency transmission of the whole cell. Background technique [0002] 3GPP's third-generation mobile communication standards include three standards: FDD (Frequency Division Duplex), TDD HCR and TDD LCR. The FDD standard is also called WCDMA (Wideband Code Division Multiple Access), and TDD LCR is also called TD-SCDMA (Time Division Multiple Access). duplex synchronous code division multiple access). As China's 3G standard, TD-SCDMA has most of the independent intellectual property rights, especially the core intellectual property rights. [0003] The core technology of TD-SCDMA mainly focuses on smart antennas, dynamic channel allocation, asymmetric configuration of uplink and downlink services, and receiver technology for multi-user ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04L27/26H04J13/02H04N5/44H04W4/06
CPCH04L25/0212H04L25/022H04L25/024H04L25/03159H04L2025/03522
Inventor 程健林敬东
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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