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Method and equipment for transmitting uplink control information

A technology for controlling information and control channels, which is applied in the direction of transmission path sub-channel allocation, transmission systems, digital transmission systems, etc., and can solve problems such as inability to guarantee terminals and uplink control information that cannot be transmitted correctly in time

Active Publication Date: 2017-08-08
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method and device for transmitting uplink control information, which is used to solve the problem in the prior art that if the current terminal transmits the uplink control channel on an unlicensed carrier, it cannot guarantee that the terminal can access the channel at any time, and there is Problems that may cause uplink control information to be unable to be transmitted correctly in time

Method used

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  • Method and equipment for transmitting uplink control information
  • Method and equipment for transmitting uplink control information
  • Method and equipment for transmitting uplink control information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0220] The terminal aggregates 10 carriers, where carrier 1 is a licensed carrier, and carriers 2 to 10 are unlicensed carriers. Carriers 1-5 are carrier group A, carriers 6-10 are carrier group B, carrier 1 is the main carrier in carrier group A, and carrier 6 is the main carrier in carrier group B. The base station configures carrier 6 as the PUCCH transmission carrier, and the terminal needs to perform uplink control information feedback on carrier 6 and carrier 10. The specific implementation process is described according to the following different situations:

[0221]Case 1: The terminal performs LBT detection on carrier 6, and the LBT detection result on carrier 6 indicates that the carrier is idle, then the uplink control information of carrier 6 and carrier 10 is transmitted on the PUCCH on carrier 6;

[0222] Correspondingly, the base station performs DTX detection on carrier 6, and receives uplink control information after detecting PUCCH transmission.

[0223] Cas...

Embodiment 2

[0229] The terminal aggregates 10 carriers, where carrier 1 is a licensed carrier, and carriers 2 to 10 are unlicensed carriers. Carriers 1-5 are carrier group A, carriers 6-10 are carrier group B, carrier 1 is the main carrier in carrier group A, and carrier 6 is the main carrier in carrier group B. The base station configures carrier 6 as a PUCCH transmission carrier, and configures carriers 6-10 as a switching carrier group. The terminal needs to perform uplink control information feedback for carrier 6 and carrier 10, and perform the following process:

[0230] Case 1: The terminal performs LBT detection on carriers 6-10, and the result of the LBT detection on carrier 6 is that the carrier is idle, so the PUCCH is transmitted on carrier 6;

[0231] Correspondingly, the base station performs DTX detection on carrier 6, and receives uplink control information after detecting PUCCH transmission.

[0232] Case 2: The terminal performs LBT detection on carriers 6-10. The LBT ...

Embodiment 3

[0239] The terminal aggregates 10 carriers, where carrier 1 is a licensed carrier, and carriers 2 to 10 are unlicensed carriers. Carriers 1-5 are carrier group A, carriers 6-10 are carrier group B, carrier 1 is the main carrier in carrier group A, and carrier 6 is the main carrier in carrier group B. The base station configures carrier 6 as a PUCCH transmission carrier, and configures carriers 6-10 as a PUCCH switching carrier group. The terminal needs to perform uplink control information feedback for carrier 1, carrier 2 / 6 and carrier 10, and perform the following process:

[0240] Case 1: The terminal feeds back the uplink control information of carrier 1 and carrier 2 on carrier 1, and performs LBT detection on carriers 6-10. If the LBT detection results on carriers 6-10 are all busy carriers, the carrier is also transmitted on carrier 1. 6 and carrier 10 uplink control information. The uplink control information of carrier 1 and carrier 2 and the uplink control informat...

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Abstract

The invention relates to the technical field of wireless communication, in particular to a method and equipment for transmitting uplink control information, and aims to solve the problem that a terminal cannot access a channel at any moment and uplink control information is possibly not transmitted correctly in time if the terminal transmits an uplink control channel on an unlicensed carrier at present in the prior art. In the embodiment of the invention, the terminal can switch to other unlicensed carriers or licensed carriers with listen before talk (LBT) being detected successfully to transmit the uplink control information after failing in LBT detection on a physical uplink control channel (PUCCH) transmission carrier, thereby avoiding the situation that the uplink control information cannot be correctly transmitted in time since a channel cannot be preempted.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and equipment for transmitting uplink control information. Background technique [0002] In order to support LTE (Long Term Evolution, long-term evolution) system deployment on unlicensed spectrum resources for transmission, a licensed LAA (Licensed Assisted Access, carrier-assisted access) manner is currently defined. That is, when a terminal uses an unlicensed carrier, it must first access an authorized main carrier, and the unlicensed carrier can only be used as a secondary carrier. [0003] There is no specific application system planned for the unlicensed spectrum, and it can be shared by multiple wireless communication systems such as Bluetooth and WiFi. Multiple systems use the shared unlicensed spectrum resources by preempting resources. In order to ensure the transmission performance of the LTE terminal and better use the unlicensed frequ...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0053H04W72/21H04L1/16
Inventor 司倩倩高雪娟潘学明王加庆
Owner DATANG MOBILE COMM EQUIP CO LTD
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