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Multi-point cooperative transmission parameter determination method and device

A technology of parameter determination and multi-point cooperation, applied in the field of communication, can solve problems such as uncertainty, and achieve the effect of solving uncertainty

Pending Publication Date: 2020-04-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for determining parameters of coordinated multi-point transmission, so as to at least solve the problem of uncertain values ​​of some parameters in coordinated multi-point transmission in the related art

Method used

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  • Multi-point cooperative transmission parameter determination method and device

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Experimental program
Comparison scheme
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Embodiment 1

[0027] In this embodiment, a method for determining parameters of coordinated multi-point transmission running on a terminal or a transmission node is provided, figure 1 is a flowchart of a method for determining parameters of coordinated multi-point transmission according to an embodiment of the present invention. It should be noted that, figure 1 This application is described from the terminal side, such as figure 1 As shown, the process includes the following steps:

[0028] Step S102, determining a first parameter;

[0029] Step S104, determining a second parameter according to the first parameter.

[0030] Through step S102 and step S104 of this embodiment, the first parameter is determined, and the second parameter is determined according to the first parameter, which realizes parameter determination for coordinated multi-point transmission, thereby solving some parameters in the related technology of coordinated multi-point transmission The problem of uncertainty in ...

Embodiment approach 1

[0072] This optional implementation mode is used to explain the PDCCH transmission of M repetitions to schedule one PDSCH, independent HARQ-ACK feedback, and the construction of the HARQ-ACK codebook.

[0073] Wherein, taking M greater than or equal to 2 TRPs as an example, in order to improve reliability, the M TRPs repeatedly transmit the PDCCH M times in at least one of the time domain, the frequency domain, and the air domain through the repeated transmission technology (repetition) , the content of the M PDCCHs may be the same, and they all schedule the same PDSCH. Here, each TRP can simultaneously transmit PDSCH on multiple CCs through the carrier aggregation technology.

[0074] Here, M PDCCHs correspond to M CORESET groups, each CORESET group corresponds to a TRP, and M PDCCHs correspond to M HARQ-ACK codebooks respectively, that is, feedback ACK / NACK (separated ACK / NACK feedback, or independent HARQ-ACK feedback).

[0075]The terminal receives the M PDCCHs, performs...

Embodiment approach 2

[0080] This optional implementation mode is used to explain the construction of the HARQ-ACK codebook and the scheduling of one PDSCH by PDCCHs transmitted by M repetitions, combined with HARQ-ACK feedback.

[0081] Wherein, taking M greater than or equal to 2 TRPs as an example, in order to improve reliability, the M TRPs repeatedly transmit the PDCCH M times in at least one of the time domain, the frequency domain, and the air domain through the repeated transmission technology (repetition) , the content of the M PDCCHs may be the same, and they all schedule the same PDSCH. Here, each TRP can simultaneously transmit PDSCH on multiple CCs through the carrier aggregation technology.

[0082] In this optional implementation, M PDCCHs correspond to M CORESET groups, each CORESET group corresponds to a TRP, and M PDCCHs correspond to a joint HARQ-ACK codebook, that is, joint feedback ACK / NACK (Joint ACK / NACKfeedback ).

[0083] The terminal receives the M PDCCHs, performs blind...

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Abstract

The invention provides a multi-point cooperative transmission parameter determination method and device, and the method comprises the steps: determining a first parameter; and determining a second parameter according to the first parameter. According to the invention, the problem of uncertainty of some parameter values in coordinated multi-point transmission in related technologies is solved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a parameter determination method and device for coordinated multi-point transmission. Background technique [0002] Joint transmission or reception (Multi-transmit receive point, Multi-TRP) of multiple transmission and receiving nodes is an important technology in wireless communication, and it is sometimes referred to as coordinated multi-point transmission or multi-point transmission for short. On the one hand, coordinated multi-point transmission can transmit different transmission blocks through different channel characteristics of multiple nodes to improve the spectral efficiency of the system. On the other hand, it can transmit the same transmission block or signaling information through different channel characteristics of multiple nodes. In order to obtain diversity gain to improve the robustness of the system. Because of its importance, Multi-TRP is currently supported...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04B7/024
CPCH04L5/0055H04B7/024H04L5/0044H04L1/1896H04L1/1861H04L1/08H04L1/1854H04L5/0035H04L1/1812H04W72/23H04L5/0053H04W72/0453H04W72/1273H04W72/20
Inventor 肖华华张淑娟蒋创新鲁照华
Owner ZTE CORP