17921748. Channel Estimation in a Wireless Communication Network simplified abstract (Telefonaktiebolaget LM Ericsson (publ))

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Channel Estimation in a Wireless Communication Network

Organization Name

Telefonaktiebolaget LM Ericsson (publ)

Inventor(s)

Martin Hessler of Linköping (SE)

Ema Becirovic of Linköping (SE)

[[:Category:Emil Bj�rnson of Hägersten (SE)|Emil Bj�rnson of Hägersten (SE)]][[Category:Emil Bj�rnson of Hägersten (SE)]]

Erik G. Larsson of Linköping (SE)

Channel Estimation in a Wireless Communication Network - A simplified explanation of the abstract

This abstract first appeared for US patent application 17921748 titled 'Channel Estimation in a Wireless Communication Network

Simplified Explanation

The abstract describes a wireless device that receives a downlink reference signal from a radio network node and determines channel information based on the measurement of the signal. The device then transmits an uplink signal to the radio network node, which implicitly conveys the determined channel information. The radio network node identifies the received uplink signal and determines an estimate of the uplink channel. It also determines the channel information conveyed by the identified uplink signal and estimates the downlink channel based on the determined channel information and the estimated uplink channel.

  • The wireless device receives a downlink reference signal from a radio network node.
  • It determines channel information based on the measurement of the downlink reference signal.
  • The device transmits an uplink signal to the radio network node.
  • The uplink signal implicitly conveys the determined channel information.
  • The radio network node identifies the received uplink signal from a set of candidate uplink signals.
  • It determines an estimate of the uplink channel from the received uplink signal.
  • The radio network node determines the channel information conveyed by the identified uplink signal.
  • It also estimates the downlink channel based on the determined channel information and the estimated uplink channel.

Potential Applications

  • Wireless communication systems
  • Cellular networks
  • Internet of Things (IoT) devices

Problems Solved

  • Efficient channel estimation in wireless communication systems
  • Implicit conveyance of channel information in uplink signals
  • Joint identification of candidate uplink signals and estimation of uplink and downlink channels

Benefits

  • Improved wireless communication performance
  • Reduced overhead in channel estimation
  • Enhanced reliability and efficiency in cellular networks and IoT devices


Original Abstract Submitted

A wireless device () receives a downlink reference signal () from a radio network node () over a downlink channel (), and determines channel information () based on measurement of the downlink reference signal (). The wireless device () then transmits, to the radio network node () over an uplink channel (), an uplink signal () that implicitly conveys the determined channel information (). The radio network node () jointly (i) identifies which candidate uplink signal in a set () of candidate uplink signals (--N) is received; and (ii) determines an estimate () of the uplink channel () from the received uplink signal (). The radio network node () determines the channel information () implicitly conveyed by the identified candidate uplink signal, and then determines an estimate () of the downlink channel () based on the determined channel information () and the determined estimate () of the uplink channel ().

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