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A data transmission method and device

A data transmission method and data transmission technology are applied in the field of data transmission methods and devices, and can solve the problem that authorized spectrum resources cannot fully satisfy users, etc.

Active Publication Date: 2019-08-16
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the continuous growth of mobile data traffic, the existing licensed spectrum resources are gradually unable to fully meet the needs of users, and the LTE system has begun to consider deploying transmission on unlicensed spectrum resources.

Method used

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  • A data transmission method and device
  • A data transmission method and device
  • A data transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0194] Embodiment 1 of the present invention: the situation of constructing a virtual cell by FDD carrier

[0195] The network device configures the carrier aggregation configuration information for the terminal, which is the configuration information of a primary cell and the configuration information of a virtual cell, wherein the primary cell is an FDD cell, and the virtual cell includes three FDD cells working on unlicensed frequency bands. They are named LTE-U Cell-1, LTE-U Cell-2, and LTE-UCell-3 respectively.

[0196] The terminal maintains a HARQ entity for the primary cell and the secondary cell respectively, the uplink works on the primary cell, and the downlink works on the primary cell and the virtual cell; the terminal on the virtual cell can only pass LTE-U Cell-1, LTE- One cell in UCell-2 and LTE-U Cell-3 performs downlink service receiving and processing.

[0197] The network device can simultaneously configure the working mode on the virtual cell for the term...

Embodiment 2

[0207] Embodiment 2 of the present invention: the situation of constructing a virtual cell by a TDD carrier

[0208] The network device configures the carrier aggregation configuration information for the terminal, which is the configuration information of a main cell and the configuration information of a virtual cell, where the main cell is a TDD cell or FDD cell, and the virtual cell includes three TDD cells, named respectively LTE-U Cell-1, LTE-U Cell-2, and LTE-U Cell-3 work in unlicensed frequency bands.

[0209] Wherein, the network device may configure the virtual cell for downlink transmission only, or configure the virtual cell for uplink and downlink transmission.

[0210] (1) When the network device configures the virtual cell for downlink transmission only, the data transmission situation is as follows:

[0211] The terminal maintains a HARQ entity for the primary cell and the secondary cell respectively, the uplink works on the primary cell, and the downlink wor...

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Abstract

The embodiment of the present invention discloses a data transmission method and device. In the embodiment of the present invention, a virtual cell including multiple cells can be configured, and time division multiplexing is used for data transmission between these multiple cells, so that the terminal can be flexibly adjusted Service transmission carrier. In particular, in the case of deploying transmission on unlicensed spectrum resources, aggregating multiple cells working on unlicensed frequency bands into a virtual cell, and using time division multiplexing for data transmission between these multiple cells can Reduce interference in different frequency domains, thereby improving system transmission efficiency.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] The peak rate of the Long Term Evolution (LTE-A) system is greatly improved compared with the Long Term Evolution (LTE) system, and is required to reach 1 Gbps downlink and 500 Mbps uplink. At the same time, the LTE-A system requires good compatibility with the LTE system. The LTE-A system introduces a carrier aggregation (Carrier Aggregation, CA) technology based on the need to increase the peak rate, be compatible with the LTE system, and make full use of spectrum resources. [0003] The carrier aggregation technology enables user equipment to work simultaneously on multiple cells, and one cell includes a pair of UL / DL component carriers (Component Carrier, CC). In the carrier aggregation system, each component carrier can be continuous or discontinuous, and the bandwidth between component car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/08H04W72/12H04W72/54
CPCH04L5/00H04W52/365H04W52/40H04W72/0446H04L1/1822H04W16/14H04W16/32H04W36/0058H04W72/54H04W36/302H04W16/00H04W24/08H04W72/12
Inventor 许芳丽鲍炜王彦
Owner DATANG MOBILE COMM EQUIP CO LTD
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