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Method and device in UE and base station in wireless communication

A wireless communication and wireless signal technology, applied in wireless communication, signaling distribution, sustainable communication technology, etc., can solve problems such as low transmission delay

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

In some special scenarios, IoT communication requires low transmission delay, but the existing scheduling-based uplink transmission cannot meet this requirement

Method used

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  • Method and device in UE and base station in wireless communication
  • Method and device in UE and base station in wireless communication
  • Method and device in UE and base station in wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0166] Embodiment 1 illustrates the flowchart of uplink transmission, as 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, and the steps identified in the blocks F0 and F1 are optional.

[0167] for base station N1 , send the first information in step S10, receive the first wireless signal on the first time-frequency resource in step S11, send the second information in step S12, and demodulate the first time-frequency resource in step S13 The received wireless signal is used to determine the third identifier, and in step S14, the first signaling is sent in the second time-frequency resource.

[0168] for UE U2 , in step S20, at least one of {the first identification, the second identification} is determined by itself, in step S21 the first information is received, in step S22 the first radio frequency is sent on the first time-frequency resource In step S23, the second information is rec...

Embodiment 2

[0176] Embodiment 2 illustrates the flow chart of uplink transmission, as attached figure 2 shown. attached figure 2 , the base station N3 is the maintenance base station of the serving cell of the UE U4, and the steps identified in blocks F2 and F3 are optional.

[0177] for base station N3 , sending downlink information in step S30 to determine the second identity, sending the first information in step S31, receiving the first wireless signal on the first time-frequency resource in step S32, sending the second information in step S33, and In step S34, the wireless signal received on the first time-frequency resource is demodulated to determine the third identifier, and in step S35, the first signaling is sent in the second time-frequency resource.

[0178] for UE U4 , receiving downlink information in step S40 to determine the second identity, receiving the first information in step S41, sending the first wireless signal on the first time-frequency resource in step S...

Embodiment 3

[0186] Embodiment 3 illustrates a schematic diagram of a given resource pool according to the present invention. Wherein, the given resource pool is one of {the first resource pool, the second resource pool}.

[0187] Such as image 3 As shown, the given resource pool is continuous in both the time domain and the frequency domain.

[0188] As a sub-embodiment, the given resource pool is the first resource pool.

[0189] As a sub-embodiment, the given resource pool is the second resource pool.

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Abstract

The invention discloses a method and a device in a UE and a base station in wireless communication. The UE sends a first wireless signal in a first time-frequency resource, and then detects a first signaling in a second time-frequency resource. Wherein, the first time-frequency resource is selected by the UE itself. The first parameter set includes at least one of {first identifier, second identifier}. The first signaling is used to determine the third identifier. The UE judges whether the first radio signal is correctly received by the base station by comparing the third identifier with the second identifier. The present invention solves the problem of how the UE knows that the uplink data sent by it is correctly received in the uplink transmission without scheduling by designing the second identifier and the third identifier. At the same time, the first parameter set is associated with the first time-frequency resource and the second time-frequency resource, so that the UE and the base station can obtain uplink data and feedback corresponding to the uplink data on fixed resources, reducing the complexity of blind detection.

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 uplink transmission and downlink feedback based on cellular network communication. Background technique [0002] In a traditional digital modulation based wireless communication system, such as a 3GPP (3rd Generation Partner Project, 3rd Generation Partnership Project) cellular system, uplink wireless signal transmission is based on base station scheduling. For the next generation wireless communication system, IoT (Internet of Things, Internet of Things) communication may become an important application scenario. [0003] The characteristics of IoT communication include: the number of terminal devices is very large, the standby time supported by terminal devices is long (low power consumption), and the cost of terminal devices is low. Traditional scheduling-based uplink transmissions are no longer suitabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L5/00H04W72/04H04W72/12
CPCH04L1/1812H04L1/1861H04L5/0053H04L5/0055H04W72/0446H04W72/0453H04W72/1268H04W72/21H04W72/04Y02D30/70
Inventor 张晓博蒋琦
Owner SHANGHAI LANGBO COMM TECH CO LTD
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