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Method to reduce leakage checking of uplink synchronous detection

A technology of synchronous detection and missed detection, which is applied in the field of communication, can solve the problems of low access rate of synchronous detection and so on, and achieve the effect of improving efficiency and access rate

Active Publication Date: 2010-12-29
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] As mentioned above, the currently used detection technology has the problem of low synchronous detection access rate, and no technical solution to solve this problem has been proposed so far

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  • Method to reduce leakage checking of uplink synchronous detection
  • Method to reduce leakage checking of uplink synchronous detection
  • Method to reduce leakage checking of uplink synchronous detection

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Embodiment Construction

[0042] In an embodiment, a method for reducing missed detection of uplink synchronization detection is provided. The method improves the signature recognition process, so that no misjudgment is made on the signature that should be responded to, thereby avoiding the missed detection caused by it. In general, the method according to this embodiment first performs signature identification on the uplink synchronization, and then detects whether there are other higher total correlation power peaks outside the peak window, and if its value is lower than a given parameter, it can be considered that it has not occurred In case of access conflict, the uplink synchronization signature is valid; wherein, the width of the collision detection window is from the beginning position of the signal peak window to the end position of the total correlation power sequence. Embodiments of the present invention will be described in detail below.

[0043] Such as Figure 6 As shown, the method for ...

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Abstract

A method to reduce uplink synchronous detection omission comprises steps below: Setting width of a peak value window, a front side window and a back side window and arranging a first threshold value according to width of the front side window and the back side window; calculating mean power of the front side window and the back side window; if difference of a maximum power of the peak value window with mean of the front side window exceeds the first threshold value, conforming to a first preset term; under condition of conforming to the first preset term, confirming whether a second preset term and a third preset term are met and executing relevant processing while the first preset term is met but the second preset term and the third preset term are not met. Wherein, relevant processing is carried out while the first preset term is met but the second preset term or the third preset term is not fulfilled. The present invention can guarantee signature validity and prevent synchronous signature detection and judgment omission, thus effectively increasing synchronous detection efficiency and access ratio.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a method for reducing missed detection of uplink synchronization detection. Background technique [0002] In the uplink of a synchronous CDMA (Code Division Multiple Access, code division multiple access) communication system (this paper takes a time division synchronous code division multiple access (TD-SCDMA) system as an example), multiple user equipment (UE , can also be referred to as user equipment) to send signals to the base station (Node B). In order to prevent mutual interference between different user signals, it is necessary to perform synchronous detection and control on each user to ensure that they reach the base station at the same time. [0003] The channel format of TD-SCDMA communication system is as follows: figure 1 As shown, the transmitted wireless frame includes several subframes, and the subframe structure is as follows figure 2 shown. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/707H04W24/00
Inventor 陈禹赵善红张道垠
Owner SANECHIPS TECH CO LTD