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NR5G PUCCH Format0 processing optimization method

An optimization method and detection algorithm technology, applied in the field of UCI information, can solve problems such as false detection, and achieve the effect of reducing false detection and false detection

Active Publication Date: 2022-07-08
四川创智联恒科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Assuming that when the UE sends 2bitHARQ+SR, the selected mcs=3, due to the phase rotation caused by the delay, the base station may detect the maximum power at mcs=4, and thus judge the UCI information of mcs=4, causing erroneous check

Method used

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  • NR5G PUCCH Format0 processing optimization method
  • NR5G PUCCH Format0 processing optimization method
  • NR5G PUCCH Format0 processing optimization method

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Experimental program
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Embodiment 1

[0072] In this embodiment, as figure 1 and figure 2 As shown, an NR5G PUCCH Format0 processing optimization method mainly includes the following steps:

[0073] Step 1: According to the access situation of the UE, calculate the estimated delay value n0 of the current UE arriving at the base station. Wherein, when the UE accesses, the base station can estimate the delay n0 of the current UE reaching the base station according to the DMRS of the PUSCH when demodulating msg3. However, if the UE is after access, the delay n0 can be estimated according to the DMS of the PUSCH after the access.

[0074] Step 2: After receiving the signal of PUCCH Format0, extract the frequency domain data to obtain the frequency domain signal ; where k represents the subcarrier index, l represents the symbol index, and r represents the antenna index;

[0075] Step 3: Based on the estimated delay value n0, generate a local delay compensation sequence ; Where k is the subcarrier index, e repre...

Embodiment 2

[0080] In this embodiment, the specific implementation process of Step 4 and Step 5 in Embodiment 1 is mainly described in detail, and the specific implementation steps of the method are as follows:

[0081] 1. The time domain signal received by the base station is subjected to IFFT and de-resource mapping to obtain the user's PUCCH Format0 data;

[0082] 2. Use the delay value estimated by PUSCH-DMRS last time to generate the conjugate value corresponding to the phase rotation, and multiply it with the user PUCCH Format0 data to compensate for the phase rotation due to the delay;

[0083] 3. De-Cyclic-shift is performed between the compensated frequency domain data and the sequence generated by the local mcs set, and the correlation operation is completed;

[0084] 4. Perform energy calculation and complete antenna merging and averaging;

[0085] 5. SNR calculation and DTX judgment, calculate the maximum power and noise power, thereby calculate the SNR, and judge whether the...

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Abstract

The invention discloses an NR5G PUCCH Format0 processing optimization method, and the method comprises the steps: calculating a time delay estimation value n0 when current UE arrives at a base station according to the access condition of the UE; the method comprises the following steps: after a signal of PUCCH Format0 is received, extracting frequency domain data to obtain a frequency domain signal; based on the time delay estimation value n0, generating a local time delay compensation sequence; performing time delay compensation on the frequency domain signal according to the local time delay compensation sequence to obtain a time delay compensation frequency domain signal; and carrying out De-Cycling-shift and antenna combination on the time delay compensation frequency domain signal, detecting SNR (Signal to Noise Ratio) and DTX (Discontinuous Transmission), and then judging HARQ (Hybrid Automatic Repeat Request) information and SR (Scheduling Ratio). According to the method, the PUCCH misjudgment rate during access is reduced, and meanwhile, false detection or false detection of PUCCH Format0 can be further reduced under the condition that the UE reaches a base station with relatively large time delay.

Description

technical field [0001] The present invention relates to the technical field of 5G communication, in particular to the use of PUCCH Format 0 signals to estimate UCI information (such as SR, HARQ-ACK / NACK) reported by UE, and to reduce false detection and false detection of UCI information through certain optimization processing. Background technique [0002] In NR-5G, the PUCCH Fromat0 signal can multiplex multiple UEs in the same time-frequency resource, with 1~2 symbols in the time domain and 1 RB in the frequency domain. The generation of the signal is as follows: [0003] (Formula 1) [0004] in Indicates the number of subcarriers in one RB, currently 12. It is represented by the following formula, where Mzc is the number of subcarriers of 1 RB, and the value is 12, [0005] (Formula 2) [0006] Which is stated in subsection 5.2.2 of 3GPP 38.211: is the cyclic shift value, , , here since there is only 1 RB, . [0007] , , It can be obtained by ...

Claims

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Application Information

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IPC IPC(8): H04W24/08H04W24/04H04L5/00
CPCH04W24/08H04W24/04H04L5/0048Y02D30/70
Inventor 邓翔
Owner 四川创智联恒科技有限公司