A signal sending and receiving method and user equipment

A signal transmission and signal technology, applied in the field of mobile communication, can solve the problems of inability to transmit DRS, busy channel, etc., achieve the effect of fast reference signal transmission, reduce LBT length, and improve frequency domain multiplexing coefficient

Active Publication Date: 2021-08-03
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the CCA used to send DRS, the base station can perform simple energy detection and find that the detected energy exceeds the predefined threshold value, then it is considered that the channel detected by the CCA time slot is busy and cannot send DRS

Method used

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  • A signal sending and receiving method and user equipment
  • A signal sending and receiving method and user equipment
  • A signal sending and receiving method and user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] In this embodiment, signal processing on the first time-frequency domain resource and carrier detection processing on the second time-frequency domain resource are given.

[0101] The figure is a schematic flow chart of a signal transmission and carrier detection method provided in this embodiment, as shown in FIG. 2 , specifically including:

[0102] Step 101: When the sending node sends a data signal and / or a reference signal within a predefined time window, within the predetermined time window and / or on the first time-frequency domain resource immediately adjacent to the start position of the time window, do not Send a signal, or send a predefined signal.

[0103] In practical applications, before sending the data signal and / or the reference signal, carrier detection should be performed first, and then it is determined whether to send the data signal and / or the reference signal according to the carrier detection result. Then, for a continuous burst of data signals a...

Embodiment 2

[0166] This embodiment provides a specific implementation of using the third time-frequency domain resource to perform carrier detection and signal transmission under the condition that the transmitting node only transmits the reference signal within the time window.

[0167] Figure 18 It is a schematic flow diagram of a basic flow chart of a signal transmission and carrier detection method given in this embodiment, such as Figure 18 shown, including:

[0168] Step 1801: The base station performs a third type of carrier detection on a third time-frequency domain resource before sending a reference signal within a predefined time window. Wherein, the third time-frequency domain resource overlaps with the first time-frequency domain resource. The base station performs energy detection or sequence detection in the time domain, or energy detection or sequence detection in the frequency domain on the third time-frequency domain resource.

[0169] The intersection of the third ...

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Abstract

The present application discloses a method for signal transmission and carrier detection, including: within a predefined time window, a communication node sends a signal in a different manner from that outside the time window, including a carrier detection method and / or a data transmission method. By applying this application, it is possible to improve the multiplexing coefficient in the frequency domain between nodes of the same access technology, and at the same time ensure the coexistence with other access technologies.

Description

technical field [0001] The present application relates to the technical field of mobile communication, in particular, the present application relates to a signal sending and receiving method and user equipment, especially a signal sending and receiving method and user equipment on a license-exempt frequency band. Background technique [0002] With the conflict between users' demand for high-bandwidth wireless services and the scarcity of spectrum resources becoming increasingly acute, mobile operators have begun to consider using license-free frequency bands as a supplement to licensed frequency bands. Therefore, research on deploying LTE on license-free frequency bands is on the agenda. 3GPP has begun to study how to effectively improve the spectrum utilization of the entire network without significantly affecting other technologies in unlicensed frequency bands through effective carrier aggregation of license-free frequency bands and licensed frequency bands. [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W28/26H04W72/04
CPCH04W24/02H04W28/26H04W72/0453H04L5/001H04L5/005H04L5/0053H04L5/0092H04W74/0808
Inventor 王轶张世昌李迎阳
Owner BEIJING SAMSUNG TELECOM R&D CENT
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