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Data transmission method and device

A data transmission and data technology, applied in the field of data transmission, can solve problems such as low data efficiency, achieve the effect of improving efficiency and saving time for CSI measurement and feedback

Active Publication Date: 2017-06-20
CHINA UNITED NETWORK COMM GRP CO LTD
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Problems solved by technology

[0005] This application provides a method and device for data transmission, which can solve the problem of low efficiency of base stations using unlicensed frequency bands to transmit business data

Method used

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  • Data transmission method and device

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0026] A data transmission method provided by the embodiment of this application can be applied to such as figure 1 As shown in the communication system, the communication system includes a base station and at least one terminal, such as figure 2 Shown, the method flow process of the present application is as follows figure 2 shown, including:

[0027] 101. When the base station needs to send data to a destination terminal, the base station acquires a user group identifier of th...

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Abstract

The application discloses a data transmission method and device, relating to the field of communication technology, and aiming at solving the problem that a base station has low efficiency of transmitting the business data by adopting unlicensed frequency bands. The data transmission method disclosed by the application comprises the following steps: when the base station needs to send the data to a destination terminal, the base station acquires a user group identifier of the destination terminal and locally acquires the effective CSI measurement result corresponding to the user group identifier of the destination terminal; and the base station sends the data to the destination terminal according to the effective CSI measurement result. The data transmission method and device disclosed by the application are suitable for the data transmission process.

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 Long Term Evolution (LTE) Frequency Division Duplex (FDD) system, when the base station sends data to the user equipment, it first needs to request the user equipment to perform channel state information (Channel State Information, CSI) measurement and Feedback CSI measurement results. The base station learns the current downlink channel condition from the fed back CSI measurement result, and selects a corresponding transmission scheme to realize high-speed transmission of downlink data. Since the LTE system works in the licensed frequency band, the base station has the absolute right to use the licensed frequency band. Therefore, the base station can always receive the CSI measurement results fed back by the terminal and send data to the terminal. [0003] In order to meet the ever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/1221H04W72/542
Inventor 韩潇范斌曹亘赵姣姣张天魁
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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