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Alignment method and device of downlink control information (DCI)

A technology for controlling information and messages, applied in wireless communication, adjusting the transmission mode, and featuring signaling. The effect of scheduling failure

Active Publication Date: 2021-06-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present application provides a DCI alignment method and device for downlink control information, which is used to solve the technical problems in the prior art that the DCI alignment method will increase the operational complexity of the alignment operation and the operation time is relatively long

Method used

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  • Alignment method and device of downlink control information (DCI)
  • Alignment method and device of downlink control information (DCI)
  • Alignment method and device of downlink control information (DCI)

Examples

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Embodiment 1

[0054] Such as figure 2 As shown, the present application embodiment provides a method of downlink control information DCI length alignment, which may include:

[0055] Step 201. Determine the first time of the top and down line schedule that is currently triggered by the first set of DCI lengths;

[0056] Step 202, according to the correspondence of the first time with the preset standard time, the alignment operation performed by the standard time DCI is aligned with the first set of DCI; wherein the alignment operation is included in DCI. The end of the DCI medium frequency domain resource allocation indicator bit field is completed or truncated.

[0057] The present application example calculates the total length length of the DCI and then performs alignment operations based on the total length, and the specific alignment operation can be truncated or supplemented. If the alignment is truncated, the frequency domain resource allocation field in the DCI will be truncated after ...

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Abstract

The invention discloses an alignment method and device of downlink control information (DCI). The method comprises the following steps: enabling a base station to determine a first moment when uplink and downlink scheduling which currently triggers length alignment of a first group of DCI occurs; and according to a corresponding relation between the first moment and a preset standard moment, aligning the first group of DCI by using an alignment operation executed by standard moment DCI alignment, wherein the alignment operation comprises zero padding at the tail of the DCI or cutting off the high bit of the frequency domain resource allocation indication bit field in the DCI. The method and the device disclosed by the invention are used for solving the technical problems that the operation complexity of alignment operation is increased and the operation time is relatively long due to a DCI alignment mode in the prior art.

Description

Technical field [0001] The present application relates to the field of communication technologies, and more particularly to an alignment method and apparatus for downlink control information DCI. Background technique [0002] 5G (the FiffHeration, Fifth) Communication Protocol, UE (USER Equipment, User Equipment) SS (Specific Search Space, Special Search Space) PDCCH (Physical DownLink ControlChannel, Physical Downlink Control Channel) Carrying (Downlink There are several formats for Control Information, downlink control information. PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) Downlink DCI: Format1-0and Format 1-1, and Format 2-0, 2-1, 2-2, 2-3 for some special scenes. Due to the wider bandwidth of 5G NR (New ARADIO), the limit of the UE capability makes the PDCCH (Physical DownLink Control Channel, the physical downlink control channel) cannot occupy the entire frequency band, so divided into multiple Coreset (Control Resource Set). Each search spa...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12H04L1/00
CPCH04W72/0453H04L1/0028H04L1/0007H04W72/20H04W72/23
Inventor 付乾坤陈艳红江世宇
Owner DATANG MOBILE COMM EQUIP CO LTD
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