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Low-latency methods and devices in base station and UE

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: 2018-05-25
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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  • Low-latency methods and devices in base station and UE
  • Low-latency methods and devices in base station and UE
  • Low-latency methods and devices in base station and UE

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] Embodiment 1 illustrates a flow chart of a first wireless signal transmission according to the present invention, as attached figure 1 Shown. Attached figure 1 Among them, 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 optional, and the steps in box F1 and the steps in box F2 cannot appear at the same time.

[0154] for Base station N1 , The second signaling is sent in step S10, the first signaling is sent in step S11, the first wireless signal is sent in step S12, the second wireless signal is received in step S13, and the third wireless signal is sent in step S14. Signal, the fourth wireless signal is received in step S15, the fifth wireless signal is transmitted in step S16, and the sixth wireless signal is received in step S17.

[0155] for UE U2 , The second signaling is received in step S20, the first signaling is received in step S21, the first wireless signal is received in step S22, t...

Embodiment 2

[0164] Embodiment 2 illustrates another flow chart of the first wireless signal transmission according to the present invention, as attached figure 2 Shown. Attached figure 2 Among them, 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, and the steps in box F6 and the steps in box F7 cannot appear at the same time.

[0165] for Base station N3 , The second signaling is sent in step S30, the first signaling is sent in step S31, the first wireless signal is received in step S32, the second wireless signal is sent in step S33, and the third wireless signal is received in step S34. Signal, the fourth wireless signal is sent in step S35, the fifth wireless signal is received in step S36, and the sixth wireless signal is sent in step S37.

[0166] for UE U4 , The second signaling is received in step S40, the first signaling is received in step S41, the first wireless signal is sent i...

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 skip to the end; if the first transmission state is the second state, then in step S103 Send the fourth wireless signal in step S104 and receive the fifth wireless signal in step S104; if the first transmission state is the target state, receive the third wireless signal in step S102. The target state is a state other than the first state and the second state.

[0179] As a sub-embodiment 1 of the third embodiment, 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 4 states include {first state, ...

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Abstract

The invention discloses low-latency methods and devices in a base station and UE. As an implementation example, the UE receives a first wireless signal at first, and then, sends a second wireless signal; the second wireless signal is used for determining whether a third wireless signal exists in a first time window or not; a first bit block is used for generating the first wireless signal and thethird wireless signal; the first wireless signal and the third wireless signal share first configuration information; and the first configuration information comprises at least one selected from a group consisting of occupied frequency domain resources, the MCS, the HARQ process number, the NDI, a sending antenna port and a receiving antenna port. By means of the low-latency methods and devices inthe base station and the UE disclosed by the invention, the transmission delay can be reduced; the transmission reliability can be ensured; and in addition, the low system efficiency due to redundanttransmission can be reduced as much as possible.

Description

Technical field [0001] The present invention relates to a wireless signal transmission scheme in a wireless communication system, and in particular to a method and device used for low-delay transmission. Background technique [0002] In traditional wireless communication systems based on digital modulation methods, such as 3GPP (3rd Generation Partner 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 one transmission After that, it is necessary to wait for HARQ-ACK (Hybrid Automatic Repeat request-Acknowledgement) information from the UE or the base station before deciding to retransmit or transmit new data. [0003] The new generation of radio access technologies (NR, New Radio access technologies) has been discussed in 3GPP. Among them, an important application scenario is URLLC (Ultra-Reliable and Low Latency Communications). In URLLC, a typical application sc...

Claims

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Application Information

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