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Frequency band searching method and device thereof
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A frequency band search and frequency point technology, applied in the field of communication, can solve the problems of long frequency band search time, high power consumption of UE, poor user experience, etc.
Inactive Publication Date: 2016-07-13
NANJING CHENWEI MACHINERY MFG CO LTD
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[0006] In summary, if the above sorting structure is used for frequency band search, the frequency band search time will be longer, and the UE will consume a lot of power, which will lead to poor user experience.
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example 1
[0238] Example 1. Assuming that the bandwidth of the high-power area with continuous carriers is 20MHz, the carrier distribution form can include 20MHz single carrier, 10MHz+10MHz continuous dual carriers, and the priority of 20MHz single carrier is higher than that of 10MHz+10MHz continuous dual carriers .
[0239] Then, the sorted output order of the frequency intervals included in the high-power region with continuous carriers is:
[0240] Arrange the center frequency windows of the X continuous frequency intervals first;
[0241] then the front row The central frequency point window of two consecutive frequency point intervals (frequency point interval 1~frequency point interval X1);
[0242] back row The central frequency point window of a continuous frequency point interval (frequency point interval X-X2+1~frequency point interval X);
[0243] Finally, arrange other frequency intervals according to the power.
example 2
[0244] Example 2. Assuming that the bandwidth of the high-power area with continuous carriers is 30MHz, the carrier distribution form can be in order from high to low priority: 10MHz+10MHz+10MHz three consecutive carriers, 10MHz+20MHz continuous double carriers, 20MHz+10MHz continuous dual carrier.
[0245] Then, the sorted output order of the frequency intervals included in the high-power region with continuous carriers is:
[0246] first row The central frequency point window of two consecutive frequency point intervals (frequency point interval 1~frequency point interval X1);
[0247] Then row in the middle The central frequency point window of two consecutive frequency point intervals (frequency point interval X1+1~frequency point interval X1+X2);
[0248] next row The central frequency point window of a continuous frequency point interval (frequency point interval X-X3+1~frequency point interval X);
[0249] then the front row The central frequency point window ...
example 3
[0254] Example 3. Assume that the bandwidth of the high-power region with continuous carriers is 40MHz, and the carrier distribution form can include: 20MHz+20MHz continuous dual carriers, 10MHz+20MHz+10MHz continuous three-carriers in order of priority.
[0255] Then, the sorted output order of the frequency intervals included in the high-power region with continuous carriers is:
[0256] first row The center frequency window of a continuous frequency point interval (frequency point interval 1 ~ frequency point interval X1) (corresponding to the first 20MHz carrier in the distribution form 20MHz+20MHz continuous dual carrier);
[0257] next row The center frequency window (corresponding to the second 20MHz carrier in the distribution form 20MHz+20MHz continuous dual carrier) of two continuous frequency point intervals (the angle mark is frequency point interval X-X2+1~frequency point interval X);
[0258] Arrange the central frequency window of the middle X3 continuous fr...
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Abstract
An embodiment of the invention provides a frequency band searching method and a device thereof which are applied in the communication technology field. Frequency range searching time is shortened, UE power consumption is reduced and a user feeling is increased. A specific scheme is characterized by calculating antenna port power in a measurement bandwidth W MHz of each assessment frequency point in the N assessment frequency points respectively and taking the antenna port power as a power value of a frequency point interval corresponding to the assessment frequency point; acquiring Y high power areas having continuous carrier waves in N frequency point intervals; according to bandwidths of the high power areas having the continuous carrier waves and distribution forms of the continuous carrier waves in the bandwidths, ordering the frequency point intervals in the high power areas having the continuous carrier waves; according to power values of the frequency point intervals, carrying out descending sorting on the ordered Y high power areas having the continuous carrier waves and other frequency point intervals except for the Y high power areas having the continuous carrier waves in a frequency range and carrying out frequency range searching. The method and the device are used for the frequency range searching.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a frequency band search method and device. Background technique [0002] Generally, after the user equipment (User Equipment, referred to as UE) is turned on, it needs to perform a cell search first to obtain configuration information of the cell, so as to finally realize communication between the UE, the base station and other UEs. [0003] When performing a cell search, the UE first performs a frequency band search in the configured known frequency band to detect which frequency points in the frequency band have accessible communication system cells, and tries to camp in the searched cell. In practical applications, the configurable frequency band of the communication system is generally wide and contains many frequency points. If each frequency point is detected one by one for frequency band search, the search time will be very long. [0004] In order to speed up the f...
Claims
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