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A method and device used in low-latency UE and base station

A low-latency, first-time technology, applied in the field of low-latency transmission, can solve problems such as large retransmission delays

Active Publication Date: 2020-05-26
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve the above purpose, the traditional HARQ method is adopted. When retransmission is required, the waiting of the base station or UE will cause the problem of excessive retransmission delay.

Method used

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  • A method and device used in low-latency UE and base station
  • A method and device used in low-latency UE and base station
  • A method and device used in low-latency UE and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] Embodiment 1 illustrates a flowchart of a first wireless signal transmission according to the present invention, as shown in the attached figure 1 shown. attached figure 1 In , the base station N1 is the maintenance base station of the serving cell of the UE U2. The steps in boxes F0, F1, F2 and F3 are all optional, wherein the steps in box F1 and the steps in box F2 cannot occur at the same time.

[0154] for base station N1 , send the second signaling in step S10, send the first signaling in step S11, send the first wireless signal in step S12, receive the second wireless signal in step S13, and send the third wireless signal in step S14 signal, receive the fourth wireless signal in step S15, send the fifth wireless signal in step S16, and receive the sixth wireless signal in step S17.

[0155] for UE U2 , receiving the second signaling in step S20, receiving the first signaling in step S21, receiving the first wireless signal in step S22, sending the second wi...

Embodiment 2

[0164] Embodiment 2 illustrates another flow chart of the first wireless signal transmission according to the present invention, as shown in the attached figure 2 shown. attached figure 2 In , the base station N3 is the maintenance base station of the serving cell of the UE U4. The steps identified in boxes F5, F6, F7 and F8 are all optional, wherein the steps in box F6 and the steps in box F7 cannot occur at the same time.

[0165] for base station N3 , send the second signaling in step S30, send the first signaling in step S31, receive the first wireless signal in step S32, send the second wireless signal in step S33, receive the third wireless signal in step S34 signal, send the fourth wireless signal in step S35, receive the fifth wireless signal in step S36, and send the sixth wireless signal in step S37.

[0166] for UE U4 , receive the second signaling in step S40, receive the first signaling in step S41, send the first wireless signal in step S42, receive the ...

Embodiment 3

[0177] Embodiment 3 illustrates the flow chart of the receiver of the first wireless signal, as attached image 3 shown.

[0178] The receiver of the first wireless signal sends a second wireless signal in step S100. The receiver of the first wireless signal judges the first transmission state in step S101: if the first transmission state is the first state, then jump to the end; if the first transmission state is the second state, then in step S103 Sending a fourth wireless signal in step S104 and receiving a fifth wireless signal in step S104; receiving a third wireless signal in step S102 if the first transmission state is a target state. The target state is a state other than the first state and the second state.

[0179]As a sub-embodiment 1 of Embodiment 3, the second wireless signal carries 2 bits of information, the state of the 2 bits is the first transmission state, and the first transmission state is one of the 4 states . The four states include {first state, se...

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Abstract

The present invention discloses a method and device used in low-delay UE and base station. As an embodiment, the UE first receives the first radio signal, and then sends the second radio signal. The second wireless signal is used to determine whether there is a third wireless signal in the first time window. A first block of bits is used to generate the first radio signal and the third radio signal. The first wireless signal and the third wireless signal share first configuration information, and the first configuration information includes {occupied frequency domain resource, MCS, HARQ process number, NDI, transmitting antenna port, receiving antenna port} at least one of the . The invention can reduce transmission delay and ensure transmission reliability. In addition, the present invention avoids reduction of system efficiency caused by redundant transmission as much as possible.

Description

technical field [0001] The present invention relates to a wireless signal transmission scheme in a wireless communication system, in particular to a method and device for low-delay transmission. Background technique [0002] In traditional wireless communication systems based on digital modulation methods, such as 3GPP (3rd Generation Partner Project, third generation partnership project) cellular systems, the transmission of downlink and uplink wireless signals is based on the scheduling of the base station, and the base station or UE completes a transmission After that, it is necessary to wait for HARQ-ACK (Hybrid Automatic Repeat request-Acknowledgment, Hybrid Automatic Repeat Request Acknowledgment) information from the UE or the base station before deciding to perform retransmission or new data transmission. [0003] A new generation of radio access technologies (NR, New Radio access technologies) has been discussed in 3GPP. Among them, an important application scenari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L1/00
CPCH04L1/0027H04W72/0446H04W72/23
Inventor 蒋琦
Owner SHANGHAI LANGBO COMM TECH CO LTD