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A method and device for transmitting uplink control information

A technology of control information and transmission method, applied in the field of uplink control information transmission method and device, can solve the problems of no solution, ACK/NACK and SR collision, etc.

Active Publication Date: 2021-09-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no effective solution for the collision of ACK / NACK and SR in the process of repeated transmission

Method used

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  • A method and device for transmitting uplink control information
  • A method and device for transmitting uplink control information
  • A method and device for transmitting uplink control information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] The base station sends downlink data that needs to feed back ACK / NACK in subframe n1, that is, ACK / NACK needs to be repeatedly transmitted in subframe n1, and the repeated transmission period is from subframe n1 to subframe n2, and from subframe n1 to subframe n2 The subframe n3 between them is the SR transmission subframe.

[0119] If the terminal does have SR transmission in the SR transmission subframe (that is, positive SR), and the repeated transmission period of SR is from subframe n3 to subframe n4, then on the terminal side, if the downlink data sent by the base station is all discarded on the terminal side , then the terminal does not actually send ACK / NACK in subframe n1 to subframe n2. Starting from subframe n3, if the terminal does have SR transmission, it will repeat the transmission of SR on the PUCCH resource corresponding to SR until substation n4; if After the terminal receives the downlink data scheduled by the base station, the terminal needs to feed ...

Embodiment 2

[0155] Subframe n1 is an SR transmission subframe. If the terminal does transmit SR in subframe n1, the time period for repeated transmission of SR is from subframe n1 to subframe n2.

[0156] If the base station sends downlink data that needs to feed back ACK / NACK in subframe n3 between subframe n1 and subframe n2, that is, ACK / NACK needs to be repeatedly transmitted in subframe n3, and the repeated transmission period is from subframe n3 to subframe n4, on the terminal side, if all the downlink data sent by the base station is discarded on the terminal side, the terminal does not actually send ACK / NACK in subframe n3 to subframe n4, and starts from subframe n1, if the terminal does have SR transmission, Then, the SR is repeatedly transmitted on the PUCCH resource corresponding to the SR until the substation n2; if the terminal receives the downlink data scheduled by the base station, and the terminal does not have SR transmission in the subframe n1, the terminal transmits th...

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Abstract

The invention provides a method and device for transmitting uplink control information. In the present invention, the subframe for repeated transmission of uplink control information is determined, and if it is determined that ACK / NACK and SR need to be transmitted in the first subframe, select from the ACK / NACK and SR that need to be transmitted in the first subframe A kind of uplink control information, and transmit the selected uplink control information in the first subframe. In this way, for a terminal using repeated transmission, when ACK / NACK and SR collide in the same subframe, only one kind of uplink control information among ACK / NACK and SR is transmitted in this subframe, thereby ensuring In this method, when ACK / NACK and SR collide, it can avoid repeated transmission performance degradation or incorrect transmission due to ACK / NACK or SR retransmission jump, and realize correct repeated transmission of uplink control information.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for transmitting uplink control information. Background technique [0002] With the rise of the Internet of Things, more and more attention is paid to supporting Machine Type Communication (MTC, Machine Type Communication) in a Long Term Evolution (LTE, Long Term Evolution) system. An MTC device (MTC terminal) may have some of the characteristics of various M2M (Machine to Machine, machine to machine) communication features, such as low mobility, small amount of transmitted data, insensitive to communication delay, and extremely low requirements characteristics such as power consumption. Among them, in order to reduce the cost of the MTC UE, a UE (User Equipment, also called terminal) type is newly defined, and its uplink and downlink only support 1.4MHz radio frequency bandwidth. [0003] In the existing network, terminals working in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00H04W72/12
CPCH04W72/04H04L1/1671H04L1/1854H04L1/1858H04L1/08H04L1/1887H04L5/0055H04W72/21
Inventor 高雪娟邢艳萍林亚男
Owner DATANG MOBILE COMM EQUIP CO LTD