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Uplink control information transmission method and device

A technology for controlling information and sending method, applied in the field of communication

Inactive Publication Date: 2017-01-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The main purpose of the present invention is to provide a method and device for sending downlink control information, so as to at least solve the problem of how the terminal determines the PUCCH format for sending HARQ-ACK when the PUCCH format is newly introduced in the related art

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  • Uplink control information transmission method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0249]In an application scenario that supports aggregation of up to 32 carriers, a new PUCCH format is required to support a large number of HARQ-ACK feedbacks. In this optional embodiment, it is called PUCCH format 4. The new PUCCH format can contain one or more It depends on whether the new PUCCH format is designed according to the maximum number of HARQ-ACK bits that the system needs to support, or according to the current HARQ-ACK that needs to be fed back. Wherein, the design of the new PUCCH format mainly includes: the design of the channel coder and the design of the reference signal structure. The following formats are included in the optional implementation manner of this optional embodiment:

[0250] PUCCH format 4-1: PUCCH format 3 of multiple OCC codes. PUCCH format 3 in the related art implements inter-code multiplexing between terminals through OCC codes. If a terminal is allowed to occupy multiple OCC codes, it is equivalent to a terminal using multiple PUCCH f...

Embodiment 2

[0263] When the terminal uses a PUCCH format to send HARQ-ACK, it needs to determine its corresponding PUCCH resource. In related protocols, the resources of PUCCH format 1a / 1b and PUCCH format 3 used to send HARQ-ACK are determined as follows:

[0264] For the PUCCH format 1a / 1b, there are two resource determination methods, implicit mapping and high layer configuration Joint Power Transmission Command (TPC) control field indication. For the PDSCH of the corresponding PDCCH / EPDCCH or the PDCCH / EPDCCH of the semi-persistent persistent scheduling release (SPS release), the corresponding PUCCH resource and the minimum index of the CCE / ECCE corresponding to the PDCCH / (e)PDCCH have an implicit For the PDSCH with semi-persistent scheduling, the corresponding PUCCH resources are determined according to the TPC indication field in the DCI of the PDSCH with semi-persistent scheduling activated and the PUCCH resources configured by higher layers.

[0265] For PUCCH format 3, the corre...

Embodiment 3

[0271] It can be seen from Embodiment 1 that there are many new PUCCH formats 4, even if they are the same format, the frequency domain or code domain resources occupied by them may be different, which depends on the number of bits of the fed back HARQ-ACK, Or the performance of the HARQ-ACK to be satisfied is different.

[0272] For related protocols, the number of HARQ-ACK bits that need to be fed back is determined according to the number of configured serving cells and the transmission mode of the configured serving cells. For TDD systems, it also needs to be determined according to the configured uplink and downlink ratios. For TDD serving cell aggregation with row matching, or for TDD-FDD aggregation where TDD is the main serving cell scenario, it also needs to be determined according to the configured downlink reference uplink and downlink configuration. In the scenario where a maximum of 32 serving cells are aggregated, the number of configured serving cells may be rel...

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Abstract

The invention provides an uplink control information transmission method and device. The uplink control information transmission method comprises: a terminal receives DCI transmitted by a base station, wherein the DCI comprises at least one of the following: a first control domain for indicating relevance of downlink scheduling, a second control domain for indicating a terminal to determine an HARQ-ACK feedback mode, and a third control domain for indicating a PUCCH resource used by the terminal when the terminal determines to feedback the HARQ-ACK; the terminal determines related parameter information which is needed when the terminal feeds back the HARQ-ACK information according to the downlink control information, wherein related parameter information comprises: an HARQ-ACK bit number, a PUCCH format of the HARQ-ACK, and a PUCC resource corresponding to the PUCCH format; and the terminal transmits HARQ-ACK information to the base station. The uplink control information transmission method and device solve a problem about how to determine a PUCCH format of the transmitted HARQ-ACK when the PUCCH format is introduced.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for sending uplink control information. Background technique [0002] In the Long Term Evolution (LTE for short) system, the uplink channels of the terminal include: Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH for short), Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH for short) and Physical Random Access Channel (Physical Ramdom Access Channel, referred to as PRACH), further data information, scheduling request (Scheduling Request, referred to as SR), hybrid automatic repeat request response (Hybrid Automatic Repeat request ACKnowledgment, referred to as HARQ-ACK) and channel state information (Channel State Information, referred to as CSI), SR, HARQ-ACK and CSI can be transmitted in PUCCH, where HARQ-ACK is for Physical Downlink Shared Channel (Physical Downlink Shared Channel referred to as PDSCH) or A r...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18
CPCH04L1/0003H04L1/1812H04L1/1628H04L1/1861H04L1/1896H04L5/0055H04W52/04
Inventor 梁春丽戴博杨维维
Owner ZTE CORP
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