Signal quality reporting

Patent metadata

Field	Value
Publication number	US-10686553-B2
Application number	US-29328907-A
Country	US
Kind code	B2
Filing date	Mar 19, 2007
Priority date	Mar 20, 2006
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

A radio station ( 100 ) receives a first signal (R) indicative of a scheduled resource which will be used to transmit a second signal (D 1 , D 2 ) to the radio station ( 100 ). In response to receiving the first signal (R), the radio station ( 100 ) is adapted to receive the second signal (D 1 , D 2 ) using the scheduled resource and, prior to receiving the second signal (D 1 , D 2 ), transmit an indication of received signal quality (CQI).

First claim

The invention claimed is:

1. A method of operating a radio station, comprising:
receiving a first signal indicative of a scheduled resource, said scheduled resource configured for use in receiving a second signal at the radio station, wherein the indication of said scheduled resource includes a transmission time slot, a transmission frequency, or a transmission channelization code, or any combination thereof;
in response to receiving the first signal, adapting the radio station to receive the second signal using the scheduled resource indicated by said first signal; and
prior to receiving the second signal and responsive to the first signal, transmitting an indication of channel quality, the indication of channel quality configured to enable a transmission format of the second signal to be selected for transmission of the second signal to the radio station, wherein for the second signal the transmission format includes a modulation scheme, a coding scheme, or a combination thereof.

2. The method of operating a radio station as claimed in claim 1 ,
wherein the first signal is indicative of a sequence of scheduled resources, each said scheduled resources configured for use in receiving at the radio station a corresponding second signal from a sequence of second signals; and
wherein the method comprises, in response to receiving the first signal, adapting the radio station to receive the second signals using the sequence of scheduled resources and, prior to receiving each said second signal in said sequence of second signals, transmitting an associated indication of channel quality.

3. The method of operating a radio station as claimed in claim 2 , comprising transmitting each indication of channel quality a predetermined time prior to receiving each said second signal of the sequence of second signals.

4. The method of operating a radio station as claimed in claim 1 , further comprising transmitting the indication of channel quality a predetermined time prior to receiving the second signal.

5. The method of operating a radio station as claimed in claim 1 , further comprising refraining from transmitting the indication of channel quality when the channel quality complies with a predetermined criterion.

6. The method as claimed in claim 5 , wherein the predetermined criterion is any of:
the channel quality is below a predetermined quality threshold; and
the channel quality has changed by no more than a predetermined amount within a predetermined time period.

7. A method of operating a communication system comprising a first radio station and a second radio station, comprising:
at the first radio station:
receiving a first signal indicative of a scheduled resource, said scheduled resource configured for use in receiving a second signal at the first radio station, wherein the indication of said scheduled resource includes a transmission time slot, a transmission frequency, or a transmission channelization code, or any combination thereof; and
in response to receiving the first signal, adapting the first radio station to receive the second signal using the scheduled resource indicated by said first signal; and
prior to receiving the second signal and responsive to the first signal, transmitting an indication of channel quality, the indication of channel quality configured to enable a transmission format of the second signal to be selected for transmission of the second signal to the radio station, wherein the transmission format includes for the second signal a modulation scheme a coding scheme, or a combination thereof and

at the second radio station:
transmitting the first signal;
receiving the indication of channel quality transmitted by the first radio station; and
employing the indication of channel quality to select the transmission format for transmitting the second signal to the first radio station.

8. A radio station, comprising:
a receiver configured to receive a first signal indicative of a scheduled resource, said scheduled resource configured for use in receiving a second signal at the radio station, wherein the indication of said scheduled resource includes a transmission time slot, a transmission frequency, or a transmission channelization code, or any combination thereof; and,
a control circuit responsive to receipt of the first signal for configuring the receiver to receive the second signal using the scheduled resource indicated by said first signal and responsive to the first signal, to transmit, prior to receiving the second signal, an indication of channel quality, the indication of channel quality configured to enable a transmission format of the second signal to be selected for transmission of the second signal to the radio station, wherein the transmission format includes for the second signal a modulation scheme a coding scheme, or a combination thereof.

9. The radio station as claimed in claim 8 , wherein the first signal is indicative of a sequence of scheduled resources, each one of said scheduled resources configured for use in transmitting to the radio station a corresponding second signal from a sequence of second signals; and wherein the controller is adapted to, in response to receipt of the first signal, adapt the radio station to receive the second signals using the sequence of scheduled resources and, prior to receiving each said second signal in said sequence of second signals, transmit an associated indication of channel quality.

10. The radio station as claimed in claim 8 , wherein the controller is adapted to transmit the indication of channel quality a predetermined time prior to receiving the second signal.

11. The radio station as claimed in claim 8 , wherein the controller is adapted to refrain from transmitting the indication of channel quality when the channel quality complies with a predetermined criterion.

12. The radio station as claimed in claim 11 , wherein the predetermined criterion is one of: the channel quality is below a predetermined quality threshold and the channel quality has changed by no more than a predetermined amount within a predetermined time period.

13. A radio station comprising:
a transmitter for transmitting a first signal indicative of a scheduled resource, said scheduled resource configured for use in transmitting a second signal from the radio station, wherein the indication of said scheduled resource includes a transmission time slot, a transmission frequency, or a transmission channelization code, or any combination thereof;
a receiver for receiving, responsive to the first signal, an indication of channel quality, the indication of channel quality being configured to enable a transmission format of a second signal to be selected for transmission of said second signal from the radio station, wherein the transmission format includes a modulation scheme, a coding scheme, or a combination thereof; and
a control circuit configured to select the transmission format for transmitting the second signal based on the received indication of channel quality.

14. The radio station as claimed in claim 13 , wherein the first signal is indicative of a sequence of scheduled resources, each one of said scheduled resources configured for use in transmitting from the radio station a corresponding second signal from a sequence of second signals; and wherein the controller is configured to prior to transmitting each said second signal in said sequence of second signals, receive an associated indication of channel quality if transmitted.

15. The radio station as claimed in claim 13 , wherein the receiver is configured to receive the indication of channel qu

Assignees

• Baker Matthew P J
• Moulsley Timothy J
• Koninklijke Philips Nv

Inventors

• Baker Matthew P J
• Moulsley Timothy J

Classifications

• H04L1/0003

  by switching between different modulation schemes · CPC title

• H04L1/0025 Primary

  Transmission of mode-switching indication · CPC title

• H04L1/0027

  Scheduling of signalling, e.g. occurrence thereof · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04L1/0009

  by adapting the channel coding (H04L1/1812 takes precedence) · CPC title