Control information transmission method and equipment

Abstract

The invention discloses a control information transmission method, which comprises the following steps: feedback information is contained in a target PUCCH (Physical Uplink Control Channel) of a second target time unit positioned in a second BWP (Broadband Wireless Protocol), and the second target time unit is overlapped with a first target time unit positioned in a first BWP; the feedback information comprises feedback of a first data set, the time difference between each first reference time unit of the first data set and a first target time unit is equal to the product of each parameter of a first parameter subset in a first parameter set and a first duration, and the first data set and the second data set are not overlapped; the time difference between each second reference time unit of the second data set and the second target time unit is equal to the product of each parameter in the second parameter set and the second duration. The invention further discloses equipment and a system for realizing the method. According to the invention, the problem that a part of PDSCH to be fed back with HARQ-ACK information loses feedback due to switching of a cell or a BWP sending the PUCCH is solved.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a method and device for transmitting control information. Background technique [0002] HARQ (Hybrid Automatic Repeat ReQuest, hybrid automatic repeat request) is a technology that combines FEC (Feed-forward Error Correction, feed-forward error correction) and ARQ (Automatic Repeat-ReQuest, automatic repeat request). Using this technology, the user terminal (UE) receives feedback acknowledgment (ACK) or non-acknowledgment (NACK) information for the downlink service data PDSCH, which can make the network equipment determine whether to reschedule the downlink service data or schedule new downlink service data to the user terminal . ACK and NACK information are collectively referred to as hybrid automatic repeat request acknowledgment (HARQ-ACK) information. [0003] In the new air interface system, the configuration index u corresponding to the subcarri...

AI Technical Summary

Problems solved by technology

[0007] Using the current technology, when the terminal device supports multiple uplink carriers (cells), the terminal device only sends PUCCH on the uplink primary cell (PCell, Primary Cell), which brings load between the PCell and the secondary cell (SCell, Secondary Cell) Unbalanced, and the delay of HARQ-ACK feedback is limited by the resource configuration on the PCell. When there is no resource for PUCCH transmission on the PCell, the feedback delay of HARQ-ACK will cause poor service delay characteristics

Allowing the cell where the terminal device sends PUCCH to switch between PCell and each SCell can solve the problem of unbalanced load between PCell and SCell and poor HARQ-ACK feedback delay characteristics

[0008] However, when the PUCCH is switched between uplink BWPs, the existing HARQ-ACK codebook determination method cannot meet the HARQ-ACK feedback requirements for downlink data transmission. and K1 configuration, when feedbacking PDSCH, because the time slot length of the cell or BWP before the handover is different from the K1 configuration, the corresponding PDSCH set is likely to be inconsistent with the PDSCH set to be fed back HARQ-ACK information before the handover, making the original cell or BWP Part of the PDSCH to be fed back HARQ-ACK information of the BWP loses feedback

Images