Methods and arrangements for pilot sequence coordination

A network node configured for coordinating pilot sequences, the network node comprising:

• a communication interface configured for communication with wireless devices;
• and
• processing circuitry configured to cause the network node to:
• receive, from wireless devices served by the network node and/or by one or more other network nodes, positioning information defining the position of the wireless device;
• based on the respective received positioning information, estimate for the wireless devices an angle of arrival of a signal received from the corresponding wireless device by the network node serving the corresponding wireless device;
• based on the estimated angles of arrival, allocate pilot sequences to be used by the wireless devices;
• and
• provide information to the wireless device about the respective allocated pilot sequences.

A non-transitory computer readable recording medium storing a computer program product for enabling coordination of pilot sequences, the computer program product comprising software instructions which, when run on processing circuitry of a network node in a communication system, causes the network node to:

• receive, from wireless devices served by the network node and/or by one or more other network nodes, positioning information defining the position of the wireless device;
• based on the respective received positioning information, estimate for the wireless devices an angle of arrival of a signal received from the corresponding wireless device by the network node serving the corresponding wireless device;
• based on the estimated angles of arrival, allocate pilot sequences to be used by the wireless devices;
• and
• provide information to the wireless devices about the respective allocated pilot sequences.

A method, performed in a wireless device in a communication system, for enabling coordination of pilot sequences, the method comprising:

• sending, to a network node, positioning information defining the position of the wireless device;
• receiving, from the network node, information defining one or more pilot sequences allocated to the wireless device based on angles of arrival of a signal received from the wireless device by the network node serving the wireless device, the angles of arrival being estimated based on the positioning information sent by the wireless device;
• and
• transmitting at least one pilot sequence based on the received information.

A wireless device configured to enable coordination of pilot sequences, the wireless device comprising:

• a radio communication interface configured for communication with a network node;
• and
• processing circuitry configured to cause the wireless device to:
• use the radio communication interface to send, to the network node, positioning information defining the position of the wireless device;
• use the radio communication interface to receive, from the network node, information defining one or more pilot sequences allocated to the wireless device based on angles of arrival of a signal received from the wireless device by the network node serving the wireless device, the angles of arrival being estimated based on the positioning information sent by the wireless device;
• and
• use the radio communication interface to transmit at least one pilot sequence based on the received information.

A non-transitory computer readable recording medium storing a computer program product for enabling coordination of pilot sequences, the computer program product comprising software instructions which, when run on processing circuitry of a wireless device, causes the wireless device to:

• send, to a network node, positioning information defining the position of the wireless device;
• receive, from the network node, information defining one or more pilot sequences allocated to the wireless device based on angles of arrival of a signal received from the wireless device by the network node serving the wireless device, the angles of arrival being estimated based on the positioning information;
• and
• transmit at least one pilot sequence based on the received information.