Method and device for acquiring synchronizing signal and determining starting point
A technology of synchronization signal and determination method, which is applied in the field of mobile terminal determining the starting point of synchronization signal and receiving and obtaining synchronization signal, and can solve the problems of PSCH signal error and the like
Active Publication Date: 2012-12-05
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to channel changes and other influences, the starting point of the PSCH signal of some subsequent data frames is changed to t′, and at this time it is still according to the previously determined starting point t 0 Intercepting the PSCH signal, resulting in an error in the intercepted PSCH signal
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0063] The technical solution provided by the embodiment of the present invention is to calculate the starting point t of the PSCH signal according to the first received data frame. 0 And the PSCH sequence in the PSCH signal, for subsequent received data frames, start at t 0 As a reference, a calculation range is determined in the currently received data frame, correlation calculations are performed within the calculation range to obtain the correlation maximum value, and the starting point of the PSCH signal of the currently received data frame is determined according to the calculated correlation maximum value. In this way, even if the channel changes, the starting point of the subsequent data frame PSCH signal will change. 0 Performing correlation calculations again in the nearby calculation range and searching for the correlation maximum value can more accurately determine the starting point of the PSCH signal of the currently received data frame, thereby accurately intercepti...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the field of mobile communication, in particular to the technology that a mobile terminal determines a starting point of a synchronizing signal and receives the acquired synchronizing signal. A method for determining the starting point of the synchronizing signal comprises the following steps of: determining an operation scope of a data frame received currently according to a starting point of a primary synchronous channel PSCH signal of a data frame received before; carrying out related operation in the determined operation scope to acquire a related sequence; and determining the starting point of the PSCH signal of the data frame received currently according to the maximal related value point in the related sequence. The invention also provides a device for determining the starting point of the synchronizing signal, a method and a device for acquiring the synchronizing signal. Because the starting point of the PSCH signal of the data frame received before istaken as a datum point of a data frame received later, the method and the device can more accurately determine the starting point of the PSCH signal of the data frame received later after determininga related operation scope of the data frame received later and carrying out the related operation again.
Description
Technical field [0001] The present invention relates to the field of mobile communication, and in particular to a technology for a mobile terminal to determine the starting point of a synchronization signal and receive the synchronization signal. Background technique [0002] When the mobile terminal accesses the cell (i.e. the initial cell search), or the mobile terminal switches between cells (i.e. cell reselection), there may be a large error in the crystal frequency of the mobile terminal and the base station. There is a large frequency offset (frequency offset) between the frequency of the terminal and the frequency of the base station. If there is a large frequency offset between the base station and the mobile terminal, it will affect the correct transmission and reception of signals between the base station and the mobile terminal, and cause interference to the signals communicated by other mobile terminals with the base station. Therefore, frequency offset adjustment ne...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 石蕊韩波叶威
Owner DATANG MOBILE COMM EQUIP CO LTD