Communication method and equipment

A communication method and technology of terminal equipment, applied in the field of communication, can solve problems such as large data transmission delay, and achieve the effect of improving efficiency and reducing data transmission delay

Active Publication Date: 2019-03-01
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] As can be seen from the above, in the prior art, the data transmission on the unlicensed frequency band must be completed only

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Embodiment Construction

[0087] The technical solution in this application will be described below with reference to the accompanying drawings.

[0088] In order to better understand the embodiment of the present application, the following first introduces a solution for data transmission in an unlicensed frequency band in the prior art.

[0089] First, the existing data transmission on the unlicensed frequency band is scheduled transmission.

[0090] The scheduling transmission process usually consists of the following steps: when the terminal device has uplink data arriving but no uplink transmission resources, the terminal device can first request uplink transmission resources from the network device by sending a scheduling request (SR); the network device receives After receiving the scheduling request sent by the terminal device, it responds to the scheduling request, and allocates an uplink (uplink, UL) grant (grant) to the terminal device through the physical downlink control channel (PDCCH), a...

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Abstract

The application provides a communication method and equipment. The communication method includes the following steps that: terminal equipment receives mapping information from network equipment, wherein the mapping information includes a corresponding relationship between scheduling-free resource configurations and channel access priority levels; the terminal equipment determines a first channel access priority level according to buffer state information; the terminal equipment determines the first scheduling-free resource configuration corresponding to the first channel access priority levelaccording to the mapping information; and the terminal equipment uses the first scheduling-free resource configuration to send data to the network equipment. According to the scheme provided by the application, the data transmission on an unauthorized frequency band can be realized without depending on the scheduling of the network equipment, and the data transmission delay on the unauthorized frequency band can be reduced.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to a communication method and device. Background technique [0002] The 3GPP defines three frame structures (frame structure, FS) in the long term evolution (long term evolution, LTE) system: FS1, FS2 and FS3. Among them, FS1 and FS2 are mainly used in licensed bands (licensed band), and FS3 is mainly used in unlicensed bands (unlicensed band). [0003] The unlicensed frequency band refers to the frequency band that does not need to be authorized and can be used by any device as long as it meets the requirements of spectrum etiquette and power spectral density. The spectrum etiquette mentioned here is a commonly referred to listen before talk (LBT) mechanism, which is used to ensure fairness between different devices. The so-called LBT means that the terminal device needs to perform channel energy detection before sending data: if the energy is higher than the threshol...

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Application Information

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IPC IPC(8): H04W72/04H04W72/06H04W74/02H04L5/00
CPCH04L5/0053H04W72/0453H04W74/02H04W72/563H04W72/23
Inventor 酉春华赵力徐小英
Owner HUAWEI TECH CO LTD
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