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Blind detection method and device for time division-synchronization code division multiple access (TD-SCDMA) voice signals

A technology of TD-SCDMA and voice signal, which is applied in the field of blind detection of TD-SCDMA voice signal, and can solve problems such as missed random access process, inability to obtain terminal resource configuration, and receive voice signal

Active Publication Date: 2010-07-21
大唐联诚信息系统技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Since the resource configuration information obtained by the upper layer is obtained during the random access process of the terminal, (1) if the channel condition is poor at this time, the resource configuration information of the terminal cannot be effectively obtained; (2) if the air interface signal receiving device is powered on At this time, the terminal is already communicating, and the random access process has been missed at this time, and the resource configuration of the terminal cannot be obtained
If the resource configuration information of the terminal cannot be obtained, the above-mentioned existing mechanism cannot be used to receive voice signals

Method used

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  • Blind detection method and device for time division-synchronization code division multiple access (TD-SCDMA) voice signals
  • Blind detection method and device for time division-synchronization code division multiple access (TD-SCDMA) voice signals
  • Blind detection method and device for time division-synchronization code division multiple access (TD-SCDMA) voice signals

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Embodiment Construction

[0058] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0059] Such as figure 2 Shown is a schematic diagram of the frame structure of the TD-SCDMA system.

[0060] The frame length of a TD-SCDMA is 10ms, which is divided into two subframes with the same structure. Each subframe is divided into 7 regular time slots and 3 special time slots with a length of 0.675 ms. Wherein, the regular time slots include: 1 downlink broadcast time slot (TS0) and 6 data time slots (TS1, TS2, . . . , TS6). The three special time slots are: DwPTS (downlink pilot time slot), GP (guard time slot) and UpPTS (uplink pilot time slot). The time length of broadcast time slot and data time slot is 675us, the length of DwPTS and GP is 75us, and the length of UpPTS is 125us. Such as figur...

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Abstract

The invention relates to the technical field of communication and discloses blind detection method and device for time division-synchronization code division multiple access (TD-SCDMA) voice signals. The method comprises the steps of: continuously carrying out combined detection on all same code channels of all the same time slots of subframes received by an idle port by a physical layer; after the time of code channel detection reaches the length of an interleaved frame, carrying out combined decoding on data of the same time slots of a plurality of subframes of the code channels according to the result of the combined detection; and if the decoding is right, sending decoded data to a high-level layer to be processed. By using the invention, uplink and downlink voice services of the idleport can be received without obtaining uplink and downlink resource configuration information of a terminal.

Description

technical field [0001] The invention relates to communication technology, in particular to a blind detection method and device for TD-SCDMA voice signals. Background technique [0002] In the TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system, the existing terminal detection mechanism for signals is as follows: figure 1 As shown, its main working process is: [0003] 1. The upper layer obtains resource configuration information, and transmits the obtained resource configuration information to the physical layer. The resource configuration information mainly includes: subframe number, time slot number, scrambling code number, midamble sequence window number and code channel number; [0004] 2. After the physical layer obtains the resources allocated to the terminal, it receives the time slot data according to the subframe number and the time slot number; performs joint detection according to the midamble sequence window number and code channel number a...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/06H04B1/707H04B7/26
Inventor 郭义武乔元新
Owner 大唐联诚信息系统技术有限公司
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