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Method and device for estimating timing deviation based on PDCCH, storage medium and user equipment

A technology of timing deviation and estimated value, applied in the field of communication, can solve the problems of timing deviation and poor timeliness and accuracy, and achieve the effect of short cycle and accurate timing deviation

Active Publication Date: 2020-06-16
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the timeliness and accuracy of timing offsets estimated by these reference signals may be poor in some scenarios

Method used

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  • Method and device for estimating timing deviation based on PDCCH, storage medium and user equipment
  • Method and device for estimating timing deviation based on PDCCH, storage medium and user equipment
  • Method and device for estimating timing deviation based on PDCCH, storage medium and user equipment

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Embodiment Construction

[0044] In the prior art, PDCCH timing is adjusted by using reference signals related to PDCCH QCL-typeA or QCL-typeC. These reference signals are, for example, Channel State Information Reference Signals (CSI-RS for short) (which are configured with trs -Info or trs-Info is not configured), a synchronization signal block (Synchronization signal block, SSB for short). However, on the one hand, if the periods of these reference signals are longer, the timing of the reference signals cannot keep up with the changes of these fast-changing channels in time when there are fast-changing channels; When the number of occupied RSs is small, the timing estimation accuracy will be poor.

[0045] For example, the period of CSI-RS for tracking (CSI-RS for tracking) can be configured as 10, 20, 40, 80 milliseconds (see Section 5.1.6.1.1 of 3GPP protocol TS 38.214), when the period is configured When the period is relatively large (such as 40 or 80 milliseconds), when the channel changes qui...

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Abstract

The invention discloses a method and a device for estimating timing deviation based on a PDCCH, a storage medium and user equipment. The method comprises the following steps: receiving frequency domain data of a PDCCH broadband demodulation reference signal; performing correlation calculation on the frequency domain data and a local PDCCH demodulation reference signal sequence of the UE to obtaina frequency domain channel estimation value sequence; converting the frequency domain channel estimation value sequence into a time domain channel estimation value sequence; determining a final main path position based on the time domain channel estimation value sequence; and comparing the final main path position with the target timing to obtain a timing deviation. According to the technical scheme, the timing deviation can be estimated more timely and accurately.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device, storage medium and equipment for estimating timing offset based on PDCCH in NR system. Background technique [0002] The LTE (Long Term Evolution) system refers to the long-term evolution system led by 3GPP. Its network architecture includes the access network (Evolved-UMTS Terrestrial Radio Access Network, referred to as E-UTRAN) and the core network (Evolved Packet Core, referred to as EPC). )part. The NR (New Radio) system refers to the fifth-generation mobile communication system led by 3GPP. Its network architecture includes the access network (Next-Generation Radio Access Network, referred to as NG-RAN) and the core network (5G Core Network, referred to as 5GC) section. [0003] Both the LTE system and the NR system introduce the concept of Quasi Co-Location (Quasi Co-Location, QCL for short). Specifically, if one antenna port and other a...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCH04W56/0055
Inventor 高泽庆
Owner SPREADTRUM COMM (SHANGHAI) CO LTD