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Method, device and base station for configuring downlink control channel

A technology of control channel and configuration method, applied in the field of mobile communication, can solve the problem of increasing the requirements of terminal processing delay buffer space, etc., and achieve the effects of increasing processing time, reducing requirements and improving processing efficiency

Active Publication Date: 2022-04-08
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the time domain range of the downlink control channel in the NR system is increased to 4 OFDM symbols, using the same downlink control channel resource mapping scheme as the LTE communication system will greatly increase the processing delay of the terminal and the requirements for buffer space

Method used

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  • Method, device and base station for configuring downlink control channel
  • Method, device and base station for configuring downlink control channel
  • Method, device and base station for configuring downlink control channel

Examples

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Effect test

Embodiment 1

[0066] Embodiment 1: as Figure 6 As shown, in this embodiment, one CCE contains six REGs (REGs are Figure 6 A pattern of squares filled with hatching in the middle)( Figure 6 Two CCEs are shown in , one in CORESET#0 and one in CORESET#2), and the REG-CCE in CORESET adopts time-domain priority mapping ( Figure 6 Indicated by the direction of the arrow in the middle), centralized mapping. The configuration of the reference signal (RS) takes 2 OFDM symbols as the basic unit, and is set on the first OFDM symbol in each CORESET.

Embodiment 2

[0067] Embodiment 2: as Figure 7 As shown, in this embodiment, one CCE contains six REGs (REGs are Figure 7 A pattern of squares filled with hatching in the middle)( Figure 7 Two CCEs are shown in , one in CORESET#0 and one in CORESET#2), and the REG-CCE in CORESET adopts time-domain priority mapping ( Figure 7 Indicated by the direction of the arrow), distributed mapping. The configuration of the reference signal takes 2 OFDM symbols as the basic unit, and is set on the first OFDM symbol in each CORESET.

Embodiment 3

[0068] Embodiment 3: as Figure 8 As shown, in this embodiment, one CCE includes six REGs, and REG-CCEs in the CORESET adopt frequency-domain priority mapping and centralized mapping. The configuration of the reference signal takes 2 OFDM symbols as the basic unit and is placed on the first OFDM symbol in each CORESET.

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Abstract

Embodiments of the present invention provide a method, device, and base station for configuring a downlink control channel. The method includes: determining a division method of a physical resource block of a downlink control channel; sending the division method, and the physical resource block is divided into Several control channel resource sets, each control channel resource set occupies two adjacent Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time domain; wherein, the downlink control channel occupies adjacent two symbols in the time domain Four OFDM symbols.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a downlink control channel configuration method, device and base station. Background technique [0002] In the LTE system, the physical resource block (PRB) of the downlink control channel will occupy the first 1 / 2 / 3 symbols in a transmission time interval (Transmit Time Interval, TTI) in the time domain (when the system bandwidth is 1.4MHz, may occupy 4 symbols), and the specific number of symbols is indicated by a Physical Control Format Indicator Channel (Physical Control Format Indicator Channel, PCFICH). Multiple physical downlink control channels (Physical Downlink Control Channel, PDCCH) are simultaneously transmitted on the resource block, and one PDCCH includes common control information or control information of a single user. The basic unit constituting the PDCCH is a control channel element (Control Channel Element, CCE), and one CCE includes 9 r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L27/26
CPCH04L27/2602H04W72/23
Inventor 周伟倪吉庆孙奇
Owner CHINA MOBILE COMM LTD RES INST
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