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Method and device in wireless transmission

A technology of wireless signal and transmission time, applied in radio transmission system, transmission system, wireless communication and other directions, can solve the problems of communication quality degradation and adjustment

Active Publication Date: 2020-04-24
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the sPDSCH (short Physical Downlink Shared Channel, short physical downlink shared channel) or sPUSCH (short Physical Uplink Shared Channel, short physical uplink shared channel) corresponding to the sTTI is scheduled to overlap the time domain / frequency of the PDSCH or PUSCH corresponding to the TTI When resources are limited, since the sending time of sPDSCH / sPUSCH scheduling signaling may be later than the sending time of PDSCH / PUSCH scheduling signaling, the transmission mode of PDSCH / PUSCH, such as MCS (Modulation and Coding Status) and precoding / beam Forming matrix, etc., cannot be adjusted in time with the scheduling of sPDSCH / sPUSCH, resulting in the decline of communication quality on PDSCH / PUSCH

Method used

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  • Method and device in wireless transmission
  • Method and device in wireless transmission
  • Method and device in wireless transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0221] Embodiment 1 illustrates the flow chart of wireless transmission, as attached figure 1 shown. attached figure 1 In , the base station N1 is the serving cell maintenance base station of the UE U2. attached figure 1 , the steps in box F1 are optional.

[0222] For N1, send the third signaling in step S101; send the first signaling in the first time window in step S11, and send the second signaling in the third time window in step S12; send the second signaling in the second time window in step S12 Send the first wireless signal within the fourth time window, and send the second wireless signal within the fourth time window.

[0223] For U2, the third signaling is received in step S201; the first signaling is received in the first time window in step S21, and the second signaling is received in the third time window; in step S22, the second signaling is received in the second time window The first wireless signal is received within the time window, and the second wire...

Embodiment 2

[0244] Embodiment 2 illustrates the flow chart of wireless transmission, as attached figure 2 shown. attached figure 2 In , the base station N3 is the serving cell maintenance base station of the UE U4. attached figure 2 , the steps in box F2 are optional.

[0245] For N3, the third signaling is sent in step S301; the first signaling is sent in the first time window in step S31, and the second signaling is sent in the third time window; in step S32, the second signaling is sent in the second time window The first wireless signal is received within the time window, and the second wireless signal is received within the fourth time window.

[0246] For U4, the third signaling is received in step S401; the first signaling is received in the first time window in step S41, and the second signaling is received in the third time window; in step S42, the second signaling is received in the second time window Send the first wireless signal within the fourth time window, and send...

Embodiment 3

[0252] Embodiment 3 illustrates the schematic diagrams of the first time window, the second time window, the third time window and the fourth time window, as shown in the attached image 3 shown.

[0253] In Embodiment 3, the positions of the first time window and the second time window in the time domain are continuous, and the second time window is after the first time window. The third time window is after the first time window, the third time window is within the second time window, and the time domain resource occupied by the third time window is shorter than the length of the first time window The length of the time domain resource occupied by the second time window. The time domain resources occupied by the fourth time window overlap with the time domain resources occupied by the second time window.

[0254] As a sub-embodiment 1 of Embodiment 3, the fourth time window is located within the second time window, and the length of the time-domain resource occupied by the...

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Abstract

The invention discloses a method and a device in wireless transmission. The UE first receives the first signaling in the first time window; operates the first wireless signal in the second time window; receives the second signaling in the third time window; and then operates the second wireless signal in the fourth time window . Wherein, the operation is receiving, or the operation is sending. The first signaling is used to determine the second time window, and the third signaling is used to determine the fourth time window. A first block of bits is used to generate the first wireless signal. The time domain resources occupied by the fourth time window overlap with the time domain resources occupied by the second time window, and the second signaling is used to determine whether the first bit block is used to generate the the second wireless signal. The time-frequency resource occupied by the first wireless signal and the time-frequency resource occupied by the second wireless signal are orthogonal.

Description

technical field [0001] The present invention relates to a transmission scheme in a wireless communication system, in particular to a method and device for supporting low-delay communication. Background technique [0002] At the 3GPP (3rd Generation Partner Project, third generation partnership project) RAN (RadioAccess Network, radio access network) #63 plenary meeting, the topic of reducing the delay of the LTE network was discussed. In LTE (Long Term Evolution, long-term evolution), TTI (Transmission Time Interval, transmission time interval) or subframe or PRB (Physical Resource Block) pair (Pair) corresponds to one ms (milli-second, millisecond) in time. An LTE subframe includes two time slots (Time Slot) - respectively the first time slot and the second time slot. PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) occupies the first R OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols of the P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413
CPCH04B7/0456H04L5/0053H04L5/0048H04W72/0446H04W72/0453H04W72/21H04W72/23
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD