Method for operating a base station in a wireless radio network
View Patent ↗The present invention relates to a method for operating a base station ( 21 ) in a wireless radio network. The base station ( 21 ) comprises a plurality of antennas ( 22 ) for transmitting radio frequency signals between the base station ( 21 ) and a user equipment (UE 1 , UE 2 , UE 3 ). According to the method, at each antenna ( 22 ) a training signal sent from the user equipment at a first point in time (t 1 ) is received and for each antenna a corresponding first configuration parameter (P 1 ) is determined based on the training signal received at the corresponding antenna at the first point in time (t 1 ). Furthermore, at each antenna ( 22 ) a training signal sent from the user equipment at a second point in time (t 2 ), which is different from the first point in time (t 1 ), is received and for each antenna ( 22 ) a corresponding second configuration parameter (P 2 ) is determined based on the training signal received at the second point in time (t 2 ). For each antenna ( 22 ) a corresponding predicted configuration parameter (P 3 ) is determined based on the first and second configuration parameters (P 1 , P 2 ).
1. A method for operating a base station in a wireless radio network, the base station comprising a plurality of antennas for transmitting radio frequency signals between the base station and a user equipment,
receiving at each antenna of a subset of the plurality of antennas a training signal sent from the user equipment at a first point in time,
determining for each antenna of the subset a corresponding first configuration parameter for uplink transmission based on the training signal received at the corresponding antenna at the first point in time,
receiving at each antenna of the subset of the plurality of antennas a training signal sent from the user equipment at a second point in time which is different from the first point in time,
determining for each antenna of the subset a corresponding second configuration parameter for uplink transmission based on the training signal received at the corresponding antenna at the second point in time, and
determining for each antenna of the subset a corresponding predicted configuration parameter based on the first and second configuration parameters, wherein the determining for each antenna of the subset the corresponding predicted configuration parameter comprises:
arranging the first configuration parameters in a first matrix having a predefined matrix format,
arranging the second configuration parameters in a second matrix having the predefined matrix format,
determining a configuration parameter pattern based on the first matrix and the second matrix, the configuration parameter pattern comprising a set of configuration parameters which is arranged at a first position in the first matrix and at a second position in the second matrix,
determining a predicted position of the configuration parameter pattern based on the first position and the second position,
determining a predicted matrix having the predefined matrix format based on the configuration parameter pattern and the predicted position, and
determining for each antenna of the subset the corresponding predicted configuration parameter based on the predicted matrix.
2. The method according to claim 1 , wherein determining for each antenna of the subset the corresponding predicted configuration parameter comprises:
determining for each antenna of the subset a corresponding configuration parameter change between the first configuration parameter and the second configuration parameter of the corresponding antenna, and
determining for each antenna of the subset the corresponding predicted configuration parameter based on the corresponding configuration parameter change.
3. The method according to claim 1 , wherein the predefined matrix format comprises a multi-dimensional matrix format which corresponds to a physical arrangement of the antennas.
4. The method according to claim 1 , further comprising after the second point in time:
configuring for each antenna of the subset a corresponding transceiver with the corresponding predicted configuration parameter for transmitting radio frequency signals between the base station and the user equipment.
5. The method according to claim 1 , wherein the first and second configuration parameters each comprise at least one of a group consisting of:
an amplitude information,
a phase information,
a parameter pair comprising an amplitude information and an associated phase information,
a plurality of the parameter pairs,
a signal intensity information of a signal intensity received at the corresponding antenna during receiving the training signal, and
an intensity derivative information comprising a temporal derivative of the signal intensity information.
6. The method according to claim 1 , further comprising:
emitting a training initiation signal from the base station, the training initiation signal instructing the user equipment to send the training signal and instructing other user equipments to stop sending radio frequency signals which may disturb a transmission of the training signal while the user equipment sends the training signal.
7. A base station for a wireless radio network, comprising:
a plurality of antennas for transmitting radio frequency signals between the base station and a user equipment,
a processing device configured to:
receive at each antenna of a subset of the plurality of antennas a training signal sent from the user equipment at a first point in time,
determine for each antenna of the subset a corresponding first configuration parameter for uplink transmission based on the training signal received at the corresponding antenna at the first point in time,
receive at each antenna of the subset of the plurality of antennas a training signal sent from the user equipment at a second point in time which is different from the first point in time,
determine for each antenna of the subset a corresponding second configuration parameter for uplink transmission based on the training signal received at the corresponding antenna at the second point in time,
arrange the first configuration parameters in a first matrix having a predefined matrix format,
arrange the second configuration parameters in a second matrix having the predefined matrix format,
determine a configuration parameter pattern based on the first matrix and the second matrix, the configuration parameter pattern comprising a set of configuration parameters which is arranged at a first position in the first matrix and at a second position in the second matrix,
determine a predicted position of the configuration parameter pattern based on the first position and the second position,
determine a predicted matrix having the predefined matrix format based on the configuration parameter pattern and the predicted position, and
determine for each antenna of the subset a corresponding predicted configuration parameter based on the predicted matrix.
8. The base station according to claim 7 , wherein the processing device is configured to:
determine for each antenna of the subset a corresponding configuration parameter change between the first configuration parameter and the second configuration parameter of the corresponding antenna, and
determine for each antenna of the subset the corresponding predicted configuration parameter based on the corresponding configuration parameter change.
9. The base station according to claim 7 , wherein the predefined matrix format comprises a two-dimensional matrix format which corresponds to a physical arrangement of the antennas.
10. The base station according to claim 7 , further comprising a plurality of transceivers, wherein each transceiver of the plurality of transceivers is associated with a corresponding antenna of the plurality of antennas, wherein the processing device is configured to configure, after the second point in time, each transceiver with the corresponding predicted configuration parameter for transmitting radio frequency signals between the base station and the user equipment.
11. The base station according to claim 7 , wherein the first and second configuration parameters each comprise at least one of a group consisting of:
an amplitude information,
a phase information,
a parameter pair comprising an amplitude information and an associated phase information,
a plurality of the parameter pairs,
a signal intensity information of a signal intensity received at the corresponding antenna during receiving the training signal, and
an intensity derivative information comprising a temporal derivative of the signal intensity information.
12. The base station according to claim 7 , wherein the base station is configured to emit a training initiation signal, the training initiation signal instructing the user equipment to send the training signal and instructing other user equipments to stop sending radio frequency signals which may disturb a transmission of the training signal while the user equipment sends the training signal.
13. A user equipment for a wireless radio network, wherein the user equipment is configured for transmission of radio frequency signals between the user equipment and the base station according to claim 7 .