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DCI transmission method and device, equipment and storage medium

A memory and base station technology, applied in the field of wireless transmission, can solve the problems of reducing DCIformat reliability, increasing control channel resource overhead, reducing resource scheduling flexibility, etc., to achieve the effects of ensuring flexibility, reducing impact, and reducing resource overhead

Inactive Publication Date: 2019-07-19
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 traditional blind detection method is adopted, that is, one blind detection is performed for each payload size, the blind detection complexity and processing delay of the UE will be greatly increased
If the payload size of some DCI formats is aligned by filling bits, such as padding with zeros, although the complexity of blind detection can be reduced, it will reduce the reliability of DCI formats with shorter code lengths and increase invalid control channel resource overhead.
If the DCI format that the UE needs to detect is reduced, the flexibility of resource scheduling will be reduced

Method used

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  • DCI transmission method and device, equipment and storage medium
  • DCI transmission method and device, equipment and storage medium
  • DCI transmission method and device, equipment and storage medium

Examples

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Embodiment Construction

[0030] Multiple DCI formats are defined in the LTE (Long Term Evolution) standard to correspond to uplink / downlink resource scheduling and different transmission modes. For example, DCI format 4 is used for uplink resource scheduling in multi-antenna port mode, and format 2A is used for downlink resource scheduling in transmission mode 3. The payload size (load size) of each DCI format depends on which bit fields are included in the DCI format and the RRC configuration of a specific UE on each bit field. For example, format 2 contains MCS (modulation and coding scheme) / NDI (new data indicator, New Data Indicator) / RV (redundancy version, redundancy version) bit fields of double codewords, while format 1A only contains MCS / NDI / RV bit field of a single codeword. In addition, both format 1A and format 2 include a CIF field. If a UE is configured with carrier aggregation and cross-carrier scheduling through RRC, the CIF (carrier indicator field, carrier indicator field) field is 3...

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Abstract

The embodiment of the invention discloses a DCI transmission method and device, equipment and a storage medium. The method comprises the following steps: according to an alignment rule, aligning payload size of a DCI format in a DCI format set configured for terminal UE by a base station; wherein the alignment rule comprises aligning the DCI format in the DCI format set with the payload size in abit filling manner according to a threshold value and the aligned DCI format; and the base station transmitting the DCI to be sent to the UE according to the aligned paraload size.

Description

technical field [0001] The present invention relates to wireless transmission technology, and in particular to a method, device, device, and storage medium for transmitting DCI (Downlink Control Information). Background technique [0002] On the one hand, the 5G NR (New Radio) standard introduces some new bit field information in the DCI format (format), for example, the DCI format for downlink resource allocation introduces time domain resource allocation, TCI (Transmission Configuration Indication, transmission configuration indication), ARI (ACK / NACK ResourceIndex, ACK / NACK resource index), etc., where NACK is a negative acknowledgment character (Negative Acknowledgment) and ACK is an acknowledgment character (Acknowledgment), which is used in the DCI format of uplink resource allocation UL (uplink, UpLink) / SUL (supplementary uplink carrier, Supplementary Uplink) indicator, SRI (SRS (Sounding Reference Signal, channel sounding reference signal) resource indication, SRS Re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0008H04L1/003H04L1/0038
Inventor 周伟倪吉庆
Owner CHINA MOBILE COMM LTD RES INST
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