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Beamforming in a wireless communication system

A wireless communication system and beamforming technology, applied in wireless communication, radio transmission system, traffic control system, etc., to achieve the effect of improving equipment energy consumption, improving energy efficiency, and improving quality

Pending Publication Date: 2019-05-21
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, this traditional beam tracking method "reactively" switches between different beams in response to quality degradation and based on the UE's current location

Method used

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  • Beamforming in a wireless communication system
  • Beamforming in a wireless communication system
  • Beamforming in a wireless communication system

Examples

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Embodiment Construction

[0028] figure 1 A wireless communication system 10 is shown in accordance with some embodiments. System 10 includes radio network nodes 12, such as base stations or other network equipment. System 10 also includes one or more wireless devices 14, such as user equipment (UE). The radio network node 12 is configured to serve the one or more wireless devices 14 by sending radio signals to or receiving radio signals from the one or more devices 14 .

[0029] figure 1 The one or more wireless devices 14 are shown on board a public transportation vehicle 16 (eg, a bus, train, subway, or other shared passenger vehicle). The radio network node 12 advantageously utilizes its knowledge of wireless devices 14 on such public transport vehicles 16 and its knowledge of vehicle movement in order to control beamforming for those wireless devices 14 . For example, radio network node 12 may control the direction and / or selection of beam 18 on which radio signals are sent to or received from...

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Abstract

A radio network node (12) is configured to serve a wireless device (14) in a wireless communication system (10). The radio network node (12) in this regard is configured to determine that the wirelessdevice (14) is onboard a public transit vehicle (16). Based on that determination, the radio network node (12) is configured to predict a position of the public transit vehicle (16), e.g., based on aroute schedule (20) of the public transit vehicle (16) and / or positioning measurements (22) received from the public transit vehicle (16). The radio network node (12) is further configured to controlbeamforming for the wireless device (14) based on the predicted position of the public transit vehicle (16). In some embodiments, this controlling comprises performing dynamic beam direction adjustment, as needed to track the vehicle (16)'s movement. Alternatively or additionally, the controlling comprises performing beam selection from among a subset of candidate beams with coverage in a vicinity of the vehicle (16)'s predicted position.

Description

technical field [0001] The present application relates generally to methods and apparatus in wireless communication systems, and more particularly to methods and apparatus for beamforming in wireless communication systems. Background technique [0002] The transmitter employs beamforming to amplify transmitted signals in selected directions while attenuating them in other directions. With beamforming, a transmitter transmits signals from multiple transmit antennas, but with individually adjusted phase shifts or delays. This effectively creates beams in the resulting transmitted radiation pattern of the signal, eg, by controlled constructive and destructive interference of phase-shifted signals from the various antenna elements. The beam direction depends on the phase shift of the antenna elements. Accordingly, the receiver employs beamforming to amplify signals received from selected directions while attenuating unwanted signals in other directions. The receiver does this...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04W16/28
CPCH04W16/28H04B7/0617H04W4/029G08G1/123
Inventor 马克西姆·捷斯连科梁宏鑫康斯坦丁诺斯·万迪卡斯西贝尔·托姆巴斯
Owner TELEFON AB LM ERICSSON (PUBL)
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