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Wireless unit selection method and frame setting method

A technology of wireless unit and setting method, which is applied in wireless communication, vehicle wireless communication service, electrical components, etc., and can solve the problems of inability to cover time difference and inability to provide reliable services, etc.

Active Publication Date: 2020-11-03
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, since the length of the cyclic prefix (CP) is very short compared to existing cellular systems based on LTE below 6 GHz, the CP may not be able to cover the time difference due to the distance between wireless units
Therefore, reliable service may not be provided as high-speed trains move

Method used

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  • Wireless unit selection method and frame setting method
  • Wireless unit selection method and frame setting method
  • Wireless unit selection method and frame setting method

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Embodiment Construction

[0046] Hereinafter, embodiments of the present invention are described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily implement. However, the present invention can be implemented in many different ways and is not limited to the embodiments described here. In addition, in order to clearly explain the present invention, parts irrelevant to the description are omitted from the drawings, and like reference numerals are attached to like parts throughout the specification.

[0047] figure 1 It is a diagram schematically showing a mobile wireless backhaul network for high-speed mobile objects according to an embodiment of the present invention.

[0048] refer to figure 1 , the mobile wireless backhaul network for high-speed moving bodies includes a vehicle terminal (VE) 110 , a plurality of base stations, and a gateway 130 .

[0049] The vehicle terminal 110 is installed in a high-speed movi...

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Abstract

The invention relates to a radio unit selecting method and a frame setting method, and provides a radio unit selecting method used for a base station including a digital unit in a mobile radio backhaul network for a highly moving object carrying a vehicle terminal. When the first radio unit communicates with the vehicle terminal by utilizing CP of the first length among multiple radio units, the base station measures the distance between the vehicle terminal and the first radio unit. If the distance is smaller than a first threshold, the base station selects a second radio unit to be moved among the rest radio units in the multiple radio units. Moreover, the length of CP used by the first radio unit and the second radio unit is set by the base station to the third length between the secondlength and the first length. If the signal intensity of the first radio unit is smaller than a second threshold, the CP used by the second radio unit is set as the first length by the base station.

Description

technical field [0001] The invention relates to a wireless unit selection method and a frame setting method, in particular to a wireless unit selection method and a frame setting method in a mobile wireless backhaul network. Background technique [0002] In a mobile wireless backhaul network for a high-speed moving body such as a high-speed train (HST) on which multiple users ride, a vehicle terminal (VE) installed in the high-speed train is used as a single terminal, and communicates with a base station Send and receive data between. In addition, in the high-speed train, the data sent and received between the mobile wireless backhaul network using technologies such as wireless local area network (WLAN) and small cells are served to the user terminals in the high-speed train. The method has the advantage of being able to overcome the propagation loss generated when the electric wave received from the outside of the high-speed train passes through the outer wall of the high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/32H04W4/44H04W4/70
CPCH04W36/0083H04W36/32
Inventor 金俊炯回冰金一圭卢高山郑熙尚
Owner ELECTRONICS & TELECOMM RES INST