Data transmission method, device and system, terminal and base station

A data transmission method and data technology, applied in the field of communication, can solve the problem of too many terminal detection times, and achieve the effect of reducing the false detection rate

Active Publication Date: 2017-01-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a data transmission method, device, terminal, base station and system, which can solve the problem of too many terminal detection times

Method used

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  • Data transmission method, device and system, terminal and base station
  • Data transmission method, device and system, terminal and base station
  • Data transmission method, device and system, terminal and base station

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0133] Cross-carrier uplink scheduling is pre-defined on downlink subframes {3, 4}. UE obtains DCI corresponding to SCell uplink data only on downlink subframes {3, 4} according to uplink cross-carrier scheduling. UE performs other downlink subframes in radio frames. On the frame, the DCI format0 corresponding to the uplink data of the SCell is obtained according to uplink self-scheduling.

specific Embodiment 2

[0135] The UE obtains the uplink cross-carrier scheduling on the downlink subframes {3, 4} through high-level signaling, and the UE obtains the DCI corresponding to the uplink data on the SCell only on the downlink subframes {3, 4} according to the uplink cross-carrier scheduling. On other downlink subframes in the frame, the DCI format0 corresponding to the uplink data of the SCell is obtained in the way of uplink cross-carrier self-scheduling.

[0136] The time-division configuration of cross-carrier scheduling and self-scheduling in specific embodiments 1 and 2 refers to the time-division configuration of cross-carrier scheduling and self-scheduling within one radio frame, of course, it can also be configured within a half frame or within N radio frames.

specific Embodiment 3

[0138] The UE detects the occupancy signal sent by the eNB on subframe #1, and the UE obtains the DCI corresponding to the SCell uplink data according to cross-carrier scheduling before subframe #1, that is, blindly detects the DCI of the SCell uplink data on the PCell; in the subframe #1 After #1, obtain the DCI corresponding to the SCell uplink data according to self-scheduling, blindly detect the DCI of the SCell uplink data on the SCell, and continue to blindly detect the DCI of the SCell uplink data on the PCell after the current channel occupancy ends;

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Abstract

The invention discloses a data transmission method, device and system, a terminal and a base station. The data transmission method comprises the steps that nodes determine downlink control information (DCI) corresponding to data of serving cells on an unauthorized frequency spectrum according to a predefined scheduling mode in the embodiment; and the nodes process the serving cells on the unauthorized frequency spectrum according to the DCI. The data transmission method solves a problem that the times of blind detection, which is carried out by a terminal, on downlink control information is increased due to the fact of hybrid scheduling.

Description

technical field [0001] The present invention relates to communication technology, especially to a data transmission method, device, terminal, base station and system. Background technique [0002] In the process of communication technology development, with the rapid growth of data services, licensed spectrum will not be able to bear the huge amount of data. direction of evolution. [0003] FIG. 1( a ) is a schematic diagram of an embodiment of a data transmission method in the prior art of the present invention. FIG. 1( b ) is a schematic diagram of a second embodiment of a data transmission method in the prior art of the present invention. In the existing LTE system, two scheduling methods, self-scheduling and cross-carrier scheduling, are supported. For authorized assisted access to the LAA serving cell, consider self-scheduling / cross-carrier hybrid scheduling. For example, a self-scheduling / cross-carrier hybrid scheduling method supports uplink configuration cross-car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04W88/08
CPCH04W72/1221H04W72/1273H04W88/08H04W72/23H04W72/12
Inventor 杨维维戴博梁春丽
Owner ZTE CORP
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