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Downlink data transmission method and device

A technology of downlink data and transmission method, which is applied in the field of communication, can solve the problems of low spectrum utilization rate in license-free frequency bands and low downlink throughput of terminal equipment, and achieve the effect of improving spectrum utilization rate and downlink throughput

Active Publication Date: 2020-08-07
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] Embodiments of the present invention provide a downlink data transmission method and device, which are used to solve the problem of license-free when a network device in the prior art selects a CA combination according to the CA combination type supported by the terminal device reported by the terminal device to send downlink data to the terminal device. The spectrum utilization rate of the frequency band is low, and the downlink throughput of the terminal equipment is low.

Method used

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  • Downlink data transmission method and device
  • Downlink data transmission method and device

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Embodiment Construction

[0085] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0086] It should be understood that the term "and / or" used herein is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and / or B, which may mean that A exists alone, and A and B exist simultaneously. B, there are three situations of B alone. In addition, the character ...

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Abstract

Embodiments of the present invention provide a downlink data transmission method and apparatus. The method includes: receiving, by a network device, carrier aggregation CA capability indication information sent by a terminal device, where the CA capability indication information is used to indicate, to the network device, that the terminal device supports a first-type intra-band non-contiguous carrier aggregation intra-band NC CA combination on a first frequency band, and a maximum downlink spectrum width supported by the terminal device; determining, by the network device based on the CA capability indication information, a first CA combination from at least one first-type intra-band NC CA combination of the first frequency band, where the first CA combination includes at least two component carriers CCs; and sending, by the network device, downlink data to the terminal device by using the first CA combination. In this way, when the first frequency band is a license-free frequency band, spectrum utilization of the license-free frequency band (that is, B46) can be improved, and a downlink throughput of the terminal device can also be improved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a downlink data transmission method and device. Background technique [0002] The Licensed-Assisted Access using Long Term Evolution (LAA-LTE) system uses the Carrier Aggregation (CA) technology to extend the existing LTE service by using the 5GHz unlicensed frequency band Band46, namely Use the license-free frequency band Band46 to carry some data services in the LTE system. [0003] In the prior art, when the network equipment under the LAA-LTE system uses the license-free frequency band Band46 to send data to the terminal equipment, it will first determine the supported carrier aggregation (Carrier Aggregation, referred to as: CA) combination type reported by the terminal equipment. Which type of CA combination the terminal device can support, so that the network device can select the CA combination corresponding to the CA combination type to send downli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/001H04L5/0058H04L5/0094H04W8/24H04W16/14H04W72/0453
Inventor 单惠平
Owner HUAWEI TECH CO LTD
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