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Data transmission method and device

A data transmission method and data packet technology, applied in the field of data transmission methods and devices, capable of solving problems such as waste of transmission resources

Active Publication Date: 2019-10-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is a common link between these two paths, that is, the link between the terminal and IAB node 4 and the link between the donor base station and IAB node 1, because between the terminal and IAB node 4, the donor base station and the IAB There is only one link between nodes 1. If the same carrier is used to transmit repeated data packets on the links between the terminal and IAB node 4 and between the host base station and IAB node 1, it will cause waste of transmission resources.

Method used

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  • Data transmission method and device

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Embodiment Construction

[0069] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Wherein, in the description of the present application, unless otherwise specified, " / " represents or means, for example, A / B may represent A or B. The "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone These three situations. And, in the description of the present application, unless otherwise specified, "plurality" means two or more than two. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the ...

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Abstract

The invention provides a data transmission method and device, which are used for reducing the waste of transmission resources. The method comprises the following steps: a first node receives a data packet from an air interface, wherein the first node is a wireless backhaul node, and the wireless backhaul node is used for providing a wireless backhaul service for a node wirelessly accessing the wireless backhaul node; the first node copies the data packet to obtain M data packets, wherein M is an integer greater than 1; and the first node shunts the M data packets and sends the M data packets to the second node through at least two paths. The invention relates to the technical field of communication.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a data transmission method and device. Background technique [0002] In the current standard of the fifth-generation (5G) wireless communication system, considering the requirement of service transmission reliability, in the scenario of carrier aggregation (CA) or dual connectivity (DC) , duplication of packets can be performed. Taking downlink data transmission in the DC scenario as an example, when there are two paths between the base station and the terminal, the base station copies data packet 1 into two copies at the packet data convergence protocol (PDCP for short) layer, Send to the terminal on the path. After receiving the data packet 1, the terminal will perform duplicate detection of the data packet at the PDCP layer of the terminal. If duplicate data packets are detected, the duplicate data packets will be discarded (also called deletion). [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/22
CPCH04L1/22H04L1/189H04W92/10H04W84/047H04L1/1806H04W28/0268H04W28/065H04W80/02
Inventor 朱元萍李铕刘菁王瑞袁世通戴明增
Owner HUAWEI TECH CO LTD