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A method, device and system for uplink non-orthogonal multiple access transmission feedback

A non-orthogonal multiple access and feedback system technology, which is applied in transmission systems, digital transmission systems, and multiple uses of transmission paths, can solve the problems of low transmission efficiency and insufficient feedback in the system, and achieve saving signaling overhead and improving The effect of system transmission efficiency

Active Publication Date: 2022-04-22
CHINA ACADEMY OF INFORMATION & COMM
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Although the above two feedback methods save signaling overhead, the feedback for each user is not timely enough, and the system transmission efficiency is relatively low

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] An uplink non-orthogonal multiple access transmission feedback system is provided in an embodiment of the present application, which is applied to a synchronous HARQ mechanism. see image 3 , image 3 It is a schematic diagram of an uplink non-orthogonal multiple access transmission feedback system in an embodiment of the present application. The system includes a base station and a UE. image 3 In the above, one base station corresponds to K UEs as an example. In actual applications, it is determined according to actual scenarios, and the number of UEs and base stations is not limited.

[0031] In the embodiment of the present application, the base station groups the NOMA UEs in advance, and the NOMA UEs are referred to as U...

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Abstract

The present application provides an uplink non-orthogonal multiple access transmission feedback method, device, and system. The base station feeds back group-based common control signaling to UEs according to the detection results, and feeds back to UEs with the same detection results and a small number of UEs in the group respectively. The dedicated control signaling of the UE, so that the UE detects the dedicated control signaling for the UE, and when there is a feedback result, it performs new transmission or retransmission according to the feedback result indicated by the dedicated control signaling; otherwise, according to the detected The feedback result indicated by the public control signaling of the group where the UE belongs is newly transmitted or retransmitted; wherein, the detection result for a group in the public control signaling is the detection corresponding to the UE with the same detection result and a large number of UEs in the group Result; the detection result in the dedicated control signaling is the detection result of the corresponding UE. The method can improve system transmission efficiency on the basis of saving signaling overhead.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an uplink non-orthogonal multiple access transmission feedback method, device and system. Background technique [0002] Non-orthogonal multiple access (NOMA) obtains connection number gain and improves system spectrum efficiency by superimposing data of multiple users (UEs) on the same time-frequency resource. In uplink NOMA transmission, multiple UEs use the same time-frequency resource to send data to the base station, and the base station side detects multiple user data in one time-frequency resource at the same time, and feeds back the detection result to the user, that is, acknowledgment (ACK) / not Acknowledgment (NACK) to instruct the user to make a new or retransmission. [0003] In the uplink non-orthogonal multiple access transmission feedback, if the traditional UE-specific ACK / NACK feedback is adopted, a large amount of feedback overhead will be introduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/00H04L1/16H04L1/18
CPCH04L5/0053H04L1/0023H04L1/1607H04L1/18
Inventor 沈霞闫志宇
Owner CHINA ACADEMY OF INFORMATION & COMM