20240056136. MASSIVE MIMO FOR HAPS BASED ON ANGLE INFORMATION ON USER APPARATUS simplified abstract (SoftBank Corp.)

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MASSIVE MIMO FOR HAPS BASED ON ANGLE INFORMATION ON USER APPARATUS

Organization Name

SoftBank Corp.

Inventor(s)

Koji Tashiro of Tokyo (JP)

Mitsukuni Konishi of Tokyo (JP)

Kenji Hoshino of Tokyo (JP)

Yoshichika Ota of Tokyo (JP)

Atsushi Nagate of Tokyo (JP)

MASSIVE MIMO FOR HAPS BASED ON ANGLE INFORMATION ON USER APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240056136 titled 'MASSIVE MIMO FOR HAPS BASED ON ANGLE INFORMATION ON USER APPARATUS

Simplified Explanation

The patent application describes a communication relay apparatus that improves the communication quality and system capacity in an upper-airspace staying type communication system. The apparatus uses MU-MIMO (Multi-User Multiple-Input Multiple-Output) radio communication to communicate with multiple terminal apparatuses located in a cell.

  • The communication relay apparatus receives uplink signals from each terminal apparatus via an array antenna.
  • It estimates angle information indicating the direction of each terminal apparatus.
  • Based on the estimation result of the angle information, the apparatus selects a terminal apparatus to be assigned to each radio resource used for a downlink.
  • It calculates a downlink beamforming weight based on the estimation result of the angle information.
  • The apparatus then transmits a downlink signal to the terminal apparatus via the array antenna, using the beamforming weight corresponding to the terminal apparatus and the assigned radio resources.

Potential applications of this technology:

  • Wireless communication systems in upper-airspace environments, such as drones or high-altitude platforms.
  • Communication systems in areas with a high density of terminal apparatuses, such as crowded urban areas or stadiums.

Problems solved by this technology:

  • Improves the communication quality and system capacity in a cell with an increasing number of terminal apparatuses.
  • Reduces overhead in both the terminal apparatuses and the communication relay apparatus.

Benefits of this technology:

  • Enhanced communication quality and system capacity in upper-airspace staying type communication systems.
  • Efficient utilization of radio resources by selecting terminal apparatuses and calculating beamforming weights based on angle information.
  • Reduced overhead in both terminal apparatuses and the communication relay apparatus.


Original Abstract Submitted

in an upper-airspace staying type communication relay apparatus that performs an mu-mimo radio communication with plural terminal apparatuses located in a cell, it is intended to improve the communication quality of the entire cell and enhance the system capacity, while suppressing an increase in overhead in the terminal apparatus and the communication relay apparatus even if the number of terminal apparatuses located in the cell increases. the communication relay apparatus receives an uplink signal from each of plural terminal apparatuses via an array antenna, estimates angle information indicating a direction of the terminal apparatus for each of the plural terminal apparatuses, selects a terminal apparatus to be assigned to each of plural radio resources used for a downlink based on the estimation result of the angle information, calculates a downlink beamforming weight based on the estimation result of the angle information, and transmits a downlink signal to the terminal apparatus via the array antenna based on the beamforming weight corresponding to the terminal apparatus and the radio resources assigned to the terminal apparatus.

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