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Authorized frequency band channel occupation time configuration method and device

A technology of channel occupancy time and unlicensed frequency band, which is applied in the field of communication, and can solve problems such as complex configuration of subframes, no method for configuring channel occupancy time of unlicensed frequency bands, and inability to use fixed channel occupancy time

Active Publication Date: 2016-05-11
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the configuration of the uplink and downlink subframes in the TDD LTE system is complicated, and the uplink and downlink cannot use a fixed channel occupancy time. At present, there is no configuration method for the unlicensed frequency band channel occupancy time of the TDD system.

Method used

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  • Authorized frequency band channel occupation time configuration method and device
  • Authorized frequency band channel occupation time configuration method and device
  • Authorized frequency band channel occupation time configuration method and device

Examples

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Embodiment Construction

[0093] 3GPP introduces a listen before talk (ListenBeforeTalk, LBT) mechanism in LAA, which is used for LTE equipment to monitor and detect idle channels on unlicensed frequency bands. The LBT mechanism is mainly divided into a frame-based LBT mechanism and a load-based LBT mechanism.

[0094] For the principle of the frame-based LBT mechanism, see figure 1 ,Such as figure 1As shown, an idle channel detection period includes CCA time, channel occupation time and idle time, and the CCA time is located at the beginning of each idle channel detection period. Before sending data, the LTE device monitors whether the channel is idle within the CCA time. If the channel is idle and sends data during the subsequent channel occupancy time, the channel is released during the idle time of the detection period; if the channel is detected to be busy within the CCA time, then Data cannot be sent during the subsequent channel occupancy time. The CCA time occupies one or more symbols of the...

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Abstract

The embodiment of the invention discloses an authorized frequency band channel occupation time configuration method comprising the steps that subframe configuration of a TDD LTE system is acquired; an indicating message of idle channel detection CCA time of an authorized frequency band is received, and the indicating message of CCA time includes the indicating message of uplink CCA time and the indicating message of downlink CCA time; and channel occupation time in the authorized frequency band is determined according to the subframe configuration and the indicating message of CCA time, and data transmitting and data receiving are performed according to channel occupation time. With application of the technical scheme, a UE is enabled to determine uplink channel occupation time and downlink channel occupation time according to the indicating message of CCA time and the uplink and downlink subframe configuration so that data transmitting is performed within uplink channel occupation time or a receiver is shut down within non-downlink channel occupation time and thus the objective of saving electric energy consumption of terminals can be achieved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for configuring channel occupancy time in an unlicensed frequency band. Background technique [0002] With the rapid increase of mobile communication traffic, the licensed frequency bands in the 3GPP network are increasingly unable to meet the increasing traffic volume. In order to further improve the efficiency of frequency resources on the limited frequency resources, 3GPP organizations turn to access to unlicensed frequency bands. For technical research, LTE Assisted Access (LAA) technology is introduced, in order to assist the use of unlicensed frequency bands with the help of Long Term Evolution (LTE) access technology on licensed frequency bands. Compared with WiFi operating in the unlicensed frequency band, LTE access technology can provide higher frequency efficiency and more comprehensive location coverage, better service quality and mo...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W72/04
CPCH04W52/0274H04W72/0446H04W72/21H04W52/02Y02D30/70
Inventor 李明菊朱亚军张云飞
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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