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Vehicle terminal communication method based on online learning and millimeter wave beam selection

A vehicle-mounted terminal and communication method technology, which is applied in the field of vehicle-mounted terminal communication, can solve the problems of poor real-time performance of the update method, achieve the effects of flexible beam performance update method, increase data volume, and reduce beam search overhead

Active Publication Date: 2022-05-17
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the communication environment changes fundamentally, the real-time performance of this update method is poor

Method used

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  • Vehicle terminal communication method based on online learning and millimeter wave beam selection
  • Vehicle terminal communication method based on online learning and millimeter wave beam selection
  • Vehicle terminal communication method based on online learning and millimeter wave beam selection

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Embodiment Construction

[0082] The present invention considers a downlink unicast communication scenario under a cellular system integrating a millimeter wave frequency band and a traditional frequency band below 6 GHz. That is, several millimeter-wave band small base stations (mmSBSs) (such as figure 1 shown). Each mmSBS is connected to an LTEeNB through a backhaul link in a wired mode (such as optical fiber) or a wireless mode (such as a millimeter-wave band link). The vehicle terminal has two types of wireless communication interfaces, namely an LTE interface (for maintaining connection with LTEeNB) and a mm-band interface (for high-speed data communication). Each vehicle-mounted terminal is installed on the vehicle, and the vehicle communicates and exchanges data with the base station through mmSBS during the movement.

[0083] Theoretically, each mmSBS can set an infinite number of conceptual beams, and the wave width range of each conceptual beam can be set from 0° to 360° and overlap between...

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Abstract

The invention discloses a vehicle-mounted terminal communication method based on online learning and millimeter-wave beam selection, including system initialization; in each scheduling cycle, the context information of each registered vehicle-mounted terminal entering the coverage area of ​​a millimeter-wave frequency band small base station is collected and based on the collected The context information of the vehicle-mounted terminal determines the context subspace to which it belongs; check the use times of each beam in the corresponding context subspace and the corresponding beam performance estimation value for all vehicle-mounted terminals, and select the set of beams to be probed and the beams to be used Set; select several optimal beams and assign them to the vehicle terminal; the vehicle terminal uses the beam to communicate, and at the same time updates the number of times the corresponding beam is used in the corresponding context subspace and the estimated value of the beam performance; repeat the above steps to realize the communication of the vehicle terminal. The invention has high reliability, good practicability and can effectively improve the communication capacity of the vehicle terminal.

Description

technical field [0001] The invention belongs to the field of mobile communication, and in particular relates to a vehicle-mounted terminal communication method based on online learning and millimeter wave beam selection. Background technique [0002] With the development of communication technology, the traditional frequency band below 6GHz used by the fourth generation (4G) mobile communication system can no longer meet the increasing demand for network capacity. Therefore, the fifth generation (5G) mobile communication system uses the higher frequency millimeter wave band spectrum. However, the propagation characteristics of wireless signals in the millimeter wave band have defects such as high path loss and high penetration loss. Fortunately, studies have confirmed that high path loss can be suppressed through beamforming and directional transmission. By deploying denser base stations to form a short-distance communication environment, the probability of non-line-of-sigh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/48H04W72/04H04B7/0408
CPCH04W4/48H04B7/0408H04W72/046Y02D30/70
Inventor 桂劲松刘尧
Owner CENT SOUTH UNIV