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Data transmission method and device

A data transmission method and data transmission technology, applied in the field of data transmission method and device

Active Publication Date: 2018-07-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a data transmission method and device to at least solve the problem in the related art that dynamic uplink and downlink data transmission cannot be realized according to business requirements

Method used

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  • Data transmission method and device
  • Data transmission method and device
  • Data transmission method and device

Examples

Experimental program
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specific Embodiment 1

[0091] Include the following technical problems in this specific embodiment:

[0092] Using ideas similar to multi-level DCI, dynamic TDD can perform uplink and downlink dynamic configuration and scheduling resource adjustment at the granularity of time slots, mini-slots or symbols according to business requirements.

[0093] The problem of how to process the originally scheduled data due to dynamic TDD involves indicating resource adjustment, transmission parameter adjustment, etc., and some lower details such as how to indicate.

[0094] Use perception or interference measurement methods to determine the magnitude of cross-link interference and determine whether to start data transmission, and how to transmit data when the starting position of data transmission is different.

[0095] For above-mentioned technical problem, solve by following scheme in this specific embodiment:

[0096] The time domain start position / time domain length of one TB of data transmission is dynami...

specific Embodiment 2

[0125] In this specific embodiment, the method for uplink and downlink data transmission is specifically described as follows:

[0126] The time domain length used for a data transmission block transmission when a device sends data changes dynamically. It can be k OFDM symbols, or n mini-slots, or m slots. Wherein, k, n, m are all positive integers greater than or equal to 1. Preferably, each time domain location carries different data for the transport block.

[0127] The method for determining the specific time domain length includes at least one of the following:

[0128] Method 1: According to the signaling instruction. The information includes semi-static high-layer signaling, such as a radio resource control (RedioResource Control, RRC for short) message, and dynamic DCI signaling, or also includes MAC CE.

[0129] The method for notifying the above-mentioned time-domain length includes at least one of the following: the base station first semi-statically configures ...

specific Embodiment 3

[0144] This specific embodiment describes the involved physical layer signaling. The physical layer signaling includes signaling for notifying the UE of the configuration of the uplink and downlink frame structures and signaling for scheduling update instructions.

[0145] The configuration of the attribute indicating the uplink and downlink of the terminal specifically includes the following methods:

[0146] Method 1: The first-level common-DCI provides the configuration of uplink and downlink slots for subsequent k subframes or time slots, and the second-level fast UE-specific DCI or UE-group-specific (UEs scheduled in the same slot as a group) DCI Slots for notifying changes to attributes or structures, and those not notified are not changed. Wherein, fast DCI means that the DCI occurs in a relatively high frequency domain, for example, occurs in every time slot. And it is relatively close to the time domain position where the data transmission is located.

[0147] Meth...

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Abstract

The invention provides a data transmission method and device. The method comprises the steps of determining a first time domain resource for transmitting data according to first preset information, wherein the first preset information comprises a piece of the following information: indication information from a base station, a sensing result for a channel and an interference measurement result; and transmitting the data through utilization of the determined first time domain resource. Through application of the method and the device, the problem that in related technologies, dynamic uplink anddownlink data sending cannot be realized according to business demands is solved, and the effect that the data transmission interference is reduced, the data transmission probability is improved andthe system performance is ensured is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data transmission method and device. Background technique [0002] 5G technology needs to solve some problems brought about by diversified application scenarios. For example, such applications with low latency have high requirements on latency, and need to provide end-to-end latency at the millisecond level for users. At the same time, in order to be forward compatible in 5G communication technology, it is an inevitable trend to support service adaptation in communication. Service adaptation refers to allowing semi-static configuration or dynamic configuration of uplink and downlink, so as to meet service load requirements or match service requirements. load changes. Therefore, how to support or implement flexible duplexing or dynamic time division duplexing (Time Division Duplexing, referred to as TDD) is a problem that needs to be considered first, and the above-mentioned...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/0446H04W72/20H04W74/0808H04L1/0003H04L1/1893H04L1/1896H04L1/1822H04L1/1854H04L1/1819H04L1/1887H04L5/0048H04L1/0007H04L1/0013H04L1/0034H04L5/0058H04L5/0094H04L5/0007H04L5/0053H04L5/0055H04L5/0078H04L5/0051H04W72/541H04W72/23H04B17/345
Inventor 李新彩赵亚军杨玲徐汉青
Owner ZTE CORP
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