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Method and device for detecting and indicating multiple PDCCHs, terminal and base station

A detection method and indication technology, which are applied in the directions of multiple use of transmission paths, sub-channel allocation of transmission paths, digital transmission systems, etc., to achieve the effect of reducing the complexity of blind detection and making small changes.

Active Publication Date: 2020-03-24
SPREADTRUM SEMICON (NANJING) CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is how to take into account the flexible configuration of PDCCH and the detection complexity of PDCCH under the premise of minimizing the changes to the existing protocol

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  • Method and device for detecting and indicating multiple PDCCHs, terminal and base station
  • Method and device for detecting and indicating multiple PDCCHs, terminal and base station
  • Method and device for detecting and indicating multiple PDCCHs, terminal and base station

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Embodiment Construction

[0034] As mentioned in the background art, when multiple (for example, two) PDCCHs are sent and received in a scenario of multiple sending and receiving nodes / panels, there may be problems such as high detection complexity, low configuration flexibility, or large impact on existing protocols.

[0035] Specifically, in the chairman meeting minutes formed by the 3GPP RAN#80 meeting, it has been decided to enhance the PDCCH to effectively support incoherent joint transmission.

[0036] In the 89th meeting (RAN1#89) of the 3GPP Radio Access Network working group 1 (Radio Access Network working group1, RAN1), the chairman's notes (RAN1#89Chairman's Notes) were formed. It was decided to use multiple PDCCHs to schedule each Physical Downlink Shared Channel (PDSCH), where each PDSCH is transmitted from a different transceiver node.

[0037] In the 3GPP RAN1# Ad Hoc (Ad Hoc, AH for short) 1706 meetings to form the Chairman’s Notes (RAN1#AH1706Chairman's Notes), it is determined that the Band ...

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Abstract

The invention discloses a method and a device for detecting and indicating multiple PDCCHs, a terminal and a base station. The detection method comprises the following steps: detecting a first PDCCH transmitted by a network; when it is detected that the format of the first PDCCH is DCI format 1 _ 1 and the first PDCCH contains time-frequency position information used for detecting a second PDCCH,decoding the first PDCCH to obtain the time-frequency position information of the second PDCCH; and detecting the second PDCCH based on the time frequency position information of the second PDCCH. Through the technical scheme provided by the invention, the change of the DCI format in the existing protocol can be reduced as much as possible, the blind detection complexity of the PDCCH is greatly reduced, and the configuration flexibility of the PDCCH is not reduced.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a method and device, terminal, and base station for detecting and indicating multiple PDCCHs. Background technique [0002] In the third generation partnership project (the 3rd Generation Partnership Project, 3GPP) radio access network (Radio Access Network, abbreviated as RAN) 80th meeting (RAN#80) formed in the Chairman's Notes (Chairman's Notes) Decided to improve the Multi-Transmission / Reception Point (Multi-TRP) / panel in the New Radio (NR) of the fifth generation of mobile communications (The Fifth-Generation mobilecommunications, 5G) The reliability and robustness of the ideal / non-ideal backhaul link is enhanced to enhance the Physical Downlink Shared Channel (PDCCH) to effectively support non-coherent joint transmission. [0003] However, the existing technical solutions are difficult to meet the requirements of flexible configuration of PDCCH, low PDCCH ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04L5/00
CPCH04W24/08H04L5/0053
Inventor 杨毅张扬刘萌萌王化磊
Owner SPREADTRUM SEMICON (NANJING) CO LTD
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