Method and apparatus for determining control channel unit, and storage medium

By indicating that a reference signal exists in only a portion of the N transmission time intervals (TTIs) in 4G and 5G systems, the problem of high reference signal overhead is solved, and resource utilization is improved.

CN116600404BActive Publication Date: 2026-06-02ZTE CORP
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Patent Information

Application Number
CN202310731026.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2017-09-29
Filing Date
2017-10-31
Publication Date
2026-06-02
Estimated Expiration
2037-10-31

AI Technical Summary

Technical Problem

In 4G and 5G systems, the overhead of the reference signal is large due to the transmission of the reference signal in each short time interval, which affects the resource utilization rate.

Method used

By indicating in a preset manner that a reference signal exists in at least one of the N scheduled transmission time intervals (TTIs), including an indication of a fixed position, pattern, or type, the transmission of the reference signal is reduced.

Benefits of technology

This reduces the overhead of reference signals and improves resource utilization.

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Abstract

Embodiments of the present application provide a control channel unit determination method and device, and a storage medium, wherein the control channel unit determination method comprises: selecting part of resource unit groups in N resource unit groups to form a control channel unit, and forming a control channel unit by at least one of the following ways: for a physical downlink control channel (PDCCH) based on a demodulation reference signal (DMRS), when the mapping between a control channel unit (CCE) and a resource element group (REG) is distributed mapping, at least the following principle is satisfied: M REGs are equally spaced or discretely spaced in the frequency domain to form a CCE, wherein M is the number of REGs contained in K RBs in a transmission time interval, K is a positive integer, and N is a positive integer; for a PDCCH based on a cell reference signal (CRS), when the mapping between a CCE and a REG is distributed mapping, at least the following principle is satisfied: a group of REGs equally spaced or discretely spaced in the frequency domain form a CCE in a single symbol.
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