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Data transmission method, device and system

A data transmission method and data transmission technology, applied in the field of wireless communication networks, capable of solving problems such as resource conflicts

Pending Publication Date: 2019-12-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The IAB node has dual identities of the terminal and the base station, and different identities have their own sending and receiving timings, which makes the MT and DU of the IAB node use different symbols in the time domain, but there may also be overlaps in the time domain, especially affected by In the case of half-duplex limitation, the MT and DU of the IAB node may need to send and receive conversion time or send and receive conversion time, these problems may cause conflicts between the resources used by the MT and DU of the IAB node

Method used

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  • Data transmission method, device and system
  • Data transmission method, device and system
  • Data transmission method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] The first node schedules data transmission of the second node according to the timing related information reported by the second node.

[0124] In this embodiment, the first node determines the unavailable symbols of the first link or the third link according to the timing related information reported by the second node, that is, determines the unavailable symbols of the second node MT.

[0125] The Hard resources or Soft IA resources of the second node DU are always available to its sub-links (that is, the second link, the fourth link), so the parent backhaul link of the second node (that is, the first link, the third link) Link) data transmission should try to avoid affecting the use of Hard resources or Soft IA resources of the DU.

[0126] The first node receives the timing related information reported by the second node. Wherein, the timing-related information includes at least one of the following:

[0127] The time offset T of the downlink receiving timing of t...

example 1

[0156] Example 1: DU Hard followed by MT Downlink

[0157] In this example, the first node schedules the downlink transmission of the second node after the Hard resource of the DU of the second node. Such as Figure 8a as shown, Figure 8a It is a timing schematic diagram of a data transmission method provided in Embodiment 1 of this application, when ΔT1 is greater than or equal to the threshold T th1 , the DL available symbols of the second node MT (that is, the available symbols of the first link) start from the first symbol after the Hard resource of the second node DU. That is, the number of unavailable symbols of the first link after the Hard resource is 0, that is, only ΔT1 is used as the guard interval. In the figure, the first symbol after the Hard resource of the second node DU is symbol 0 of the next time slot.

[0158] Another example Figure 8b as shown, Figure 8b It is a timing diagram of another data transmission method provided in Embodiment 1 of this ap...

example 2

[0162] Example 2: MT Downlink before DU Hard

[0163] In this example, the first node schedules the downlink transmission of the second node before the Hard resource of the second node DU. Such as Figure 8c as shown, Figure 8c It is a timing schematic diagram of another data transmission method provided in Embodiment 1 of the present application, when T symbol_1 -ΔT1 is greater than or equal to the threshold T th2 , the DL available symbols of the second node MT (that is, the available symbols of the first link) end the second symbol before the Hard resources of the second node DU. That is, the number of unavailable symbols of the first link before the Hard resource is 1. The second symbol before the Hard resource of the second node DU in the figure is the symbol N of the previous time slot symbol -2.

[0164] Another example Figure 8d as shown, Figure 8d It is a timing schematic diagram of another data transmission method provided in Embodiment 1 of the present ap...

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Abstract

The invention provides a data transmission method, device and system. The data transmission method comprises the steps that a first node receives timing related information; and the first node schedules data transmission according to the timing related information, wherein the data transmission comprises uplink data transmission or downlink data transmission.

Description

technical field [0001] The present application relates to wireless communication networks, for example, to a data transmission method, device and system. Background technique [0002] In the fifth generation mobile communication (5th Generation, 5G) new air interface (New Radio, NR), more flexible networking methods and the existence of new types of network nodes are allowed. At present, a new type of node that integrates the backhaul link (backhaul link) and the normal access link (access link), that is, the integrated access and backhaul node (Integrated Access and Backhaul Node, IAB Node) can provide more than a single cellular node. More flexible coverage and networking methods will be an important part of future mobile communication networks. [0003] The IAB node includes two functions, namely the distributed unit (Distributed Unit, DU) function and the mobile terminal (Mobile Termination, MT) function. The DU function enables the IAB node to serve as a child node or ...

Claims

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Application Information

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IPC IPC(8): H04W72/12
CPCH04W72/1268H04W72/1273H04W72/535H04W72/21
Inventor 苗婷毕峰刘文豪卢有雄邢卫民
Owner ZTE CORP