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A method and device for data transmission and signal feedback

A data transmission method and data transmission technology are applied in the fields of data transmission, signal feedback method and equipment, and can solve the problems of serious hidden nodes of LBT and the problem of not avoiding hidden nodes, etc.

Active Publication Date: 2021-06-08
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The disadvantage of the existing technology is that the direction-based LBT will bring a more serious hidden node problem, but there is no technical solution to avoid the hidden node problem in the prior art

Method used

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  • A method and device for data transmission and signal feedback
  • A method and device for data transmission and signal feedback
  • A method and device for data transmission and signal feedback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0190] In this example, on the base station side:

[0191] The beams that send the channel occupation request signal are all or some of the beams whose channels are detected as idle after the base station performs the LBT operation in a chronological order in the direction corresponding to at least one beam.

[0192] The beams performing the LBT operation are all possible beams in the space, and / or, a predetermined configuration of possible beams in the network.

[0193] The channel occupancy request signal contains one or a combination of the following information:

[0194] Information about the scheduled UEID, the Beam ID of the beam that sends the channel occupancy request signal, the location information of the beam that sends the channel occupancy request signal in space, and the channel occupancy time information of the beam that sends the channel occupancy request signal , the resource configuration required when the terminal feeds back the signal allowing the channel to...

Embodiment 2

[0214] In this example, in implementation, when the base station receives the signal allowing the channel to be occupied on multiple beams, the base station schedules the channel occupation request signal to perform data transmission with the user whose handshake is successful with the signal allowing the channel to be occupied; and / or,

[0215] When the base station receives the signal allowing the channel to be occupied on multiple beams, the base station performs the operation on the beam whose ratio between the number of users sending the signal allowing the channel to be occupied and the number of users receiving the channel occupying request signal is greater than the preset value data transmission.

[0216] In the implementation, on the beam whose ratio between the number of users sending the signal allowing the channel to be occupied and the number of users receiving the channel occupation request signal is greater than the preset value, select the beam that is dominant...

Embodiment 3

[0220] As in the example of Embodiment 1, it will have a better effect under the condition that the consistency of the sending and receiving beams of the device is guaranteed. However, if the receiving beam and the sending beam of the LBT are not calibrated, they cannot be kept the same. In the case of one beam, it is not very meaningful to execute LBT in the direction corresponding to the sending beam at this time. The behavior of the base station can be to not execute LBT in the direction corresponding to each beam, but directly in the direction corresponding to the allowed beam. In this case, other behaviors of the terminal and the base station may be consistent with Embodiment 1.

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PUM

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Abstract

The invention discloses a method and equipment for data transmission and signal feedback, comprising: after a base station performs an LBT operation in a direction corresponding to at least one beam, it sends a channel occupation request signal to a terminal to request channel occupation; the base station receives the permission After the signal that the channel is occupied, data transmission is performed on the beam that sends the channel occupation request signal. The terminal receives a channel occupancy request signal sent by the base station to the terminal on at least one beam, the channel occupancy request signal is a signal for requesting channel occupancy; after the terminal receives the channel occupancy request signal correctly, it A signal that allows the channel to be occupied is fed back to the base station on the beam of the signal. By adopting the present invention, the problem of data transmission interference caused by interfering nodes can be avoided.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for data transmission and signal feedback. Background technique [0002] There is no specific application system planned for the unlicensed spectrum, and it can be shared by various wireless communication systems. At present, the existing communication systems in the unlicensed spectrum mainly include IEEE-standardized Bluetooth, WiFi and 3GPP-standardized LTE-U (LTE in unlicensed spectrum, LTE in the unlicensed frequency band; LTE: Long Term Evolution, long-term evolution) system, multiple systems use shared unlicensed spectrum resources by preempting resources. [0003] In order to ensure the friendly coexistence of LTE-U with WIFI, 3GPP conducted in-depth discussions on LBT (listen before talk) technology and provided four LBT solutions. [0004] –Cat.1:No LBT (No LBT); [0005] –Cat.2:LBT without random back-off (LBT without random back-of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W72/04
CPCH04W24/02H04W72/046H04W72/0453H04W74/0816H04W16/14H04W88/08H04W16/28H04B7/06966H04B7/0626H04W74/08
Inventor 王加庆郑方政
Owner DATANG MOBILE COMM EQUIP CO LTD