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Control information transmission method, terminal and network equipment

A technology for controlling information and transmission methods, which is applied in the field of communication, can solve problems such as incorrect determination of transmission parameters, failure of PDSCH transmission, etc., and achieve the effect of accurate reception

Pending Publication Date: 2021-12-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the control information is repeatedly transmitted in the way of time division multiplexing, the terminal may detect multiple receiving positions of the control information. If the base station and the terminal determine the transmission parameters of the PDSCH according to different receiving positions of the control information, it will cause terminal errors. The transmission parameters of PDSCH (such as time domain transmission resources) are accurately determined, which leads to the failure of PDSCH transmission

Method used

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  • Control information transmission method, terminal and network equipment
  • Control information transmission method, terminal and network equipment
  • Control information transmission method, terminal and network equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] Specifically, the network device configures the terminal to receive repeated transmissions of the Physical Downlink Control Channel (PDCCH), that is, to detect two or more pieces of control information within one scheduling unit (one time slot, multiple time slots, or several symbols, etc.), and the two One or more control information is used to schedule or indicate the transmission of the same physical channel or physical signal. The network device uses an information field in the control information to indicate which control information receiving position or which symbol the terminal device determines the transmission position (resource or parameter) of the PDSCH / PUSCH / aperiodic CSI-RS according to.

[0125] For example, the network device can configure two or more control information in different DCI formats (format), for example, two or more of DCI formats 0_0, 0_1, and 0_2, or two or more of DCI formats 1_0, 1_1, and 1_2 , and then use the information field to inst...

Embodiment 2

[0132] Assume that in this embodiment, the information field is not used to indicate which control information the terminal uses to determine the time-domain transmission resource of the PDSCH, but is the same as the traditional information field. Through the settings on the network device side, it is ensured that the terminal device uses multiple control information The location of the control information and the content of the control information determine the same transmission parameters, that is, the location of the control information is different, and the content of the control information is also set to be different, but it is ensured that the finally determined transmission resources of the PDSCH are the same).

[0133] It is assumed that a network device sends N pieces of control information in one scheduling unit, and the N pieces of control information are used to schedule or indicate the same physical channel or the same physical signal. The contents or indicated pa...

Embodiment 3

[0137]For aperiodic CSI-RS transmission, the parameter aperiodic Triggering Offset (aperiodic Triggering Offset) is configured by high-layer signaling, and indicates the offset between the time slot containing DCI and the aperiodic CSI-RS resource set transmission time slot. If the two DCIs are transmitted in different time slots and the offset value configured by the upper layer is fixed, it will result in the situation that the aperiodic CSI-RS transmission time slots determined according to the two DCIs are not the same.

[0138] At this time, only one DCI can be used to trigger aperiodic CSI-RS transmission. The specific method is that the two control information adopt different DCI formats and one control information includes the CSI request field, and the other control information does not include this field. For example, one of the two control information DCI formats is DCI format 0_1 ​​and the other is DCI format 0_2, and one of the high-level parameters report trigger ...

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Abstract

Provided in an embodiment of the present invention are a control information transmission method, terminal and network device, and the method comprises the steps: receiving N pieces of control information sent by the network device in a scheduling unit, wherein the N pieces of control information is used for scheduling or indicating the same physical channel or physical signal, and N is a positive integer greater than or equal to 2; and determining a transmission parameter of the physical channel or the physical signal based on target control information in the N pieces of control information, wherein the target control information is at least one piece of the N pieces of control information. According to the embodiment of the invention, accurate receiving of the physical channel or the physical signal in the process of repeated transmission of the control information is realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a control information transmission method, a terminal and a network device. Background technique [0002] The transmission parameters of the Physical Downlink Shared Channel (PDSCH) (such as time-domain resource location, Transmission Configuration Indication (TCI) status, etc.) are determined by the receiving location of the control information and the content of the control information. When the control information is repeatedly transmitted in the way of time division multiplexing, the terminal may detect multiple receiving positions of the control information. If the base station and the terminal determine the transmission parameters of the PDSCH according to different receiving positions of the control information, it will cause terminal errors. The transmission parameters of the PDSCH (such as time-domain transmission resources) are accurately determined, whic...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/0446H04W72/23H04W72/04
Inventor 宋磊苏昕高秋彬
Owner DATANG MOBILE COMM EQUIP CO LTD