Methods and nodes for random access

A method in a radio network node for enabling a wireless device to perform a random access to a cell of a wireless network, the method comprising:

• transmitting information to the wireless device, wherein the transmitted information indicates a first and a second random access transmission configuration,
• receiving a random access preamble in accordance with one of the first and second random access transmission configurations, and
• determining whether the first or the second random access transmission configuration is used based on the received random access preamble.

A method in a positioning node for requesting positioning measurements associated with a random access, wherein the positioning node is connected to a radio network node serving a cell to which a wireless device is performing the random access, the method comprising:

• transmitting information to the radio network node, wherein the transmitted information indicates whether to use a first or a second random access transmission configuration when performing the positioning measurement, and
• receiving a positioning measurement result from the radio network node.

A wireless device configured to perform a random access to a cell of a wireless network, the wireless device comprising:

• a receiver configured to receive information from a radio network node comprised in the wireless network, wherein the received information indicates a first and a second random access transmission configuration,
• a processing circuit configured to select one of the first and second random access transmission configurations, and
• a transmitter configured to transmit a random access preamble in accordance with the selected random access transmission configuration.

A radio network node configured to enable a wireless device to perform a random access to a cell of a wireless network, the radio network node comprising:

• a transmitter configured to transmit information to the wireless device, wherein the transmitted information indicates a first and a second random access transmission configuration,
• a receiver configured to receive a random access preamble in accordance with one of the first and second random access transmission configurations, and
• a processing circuit configured to determine whether the first or the second random access transmission configuration is used, based on the received random access preamble.

A positioning node configured to request positioning measurements associated with a random access, wherein the positioning node is connectable to a radio network node serving a cell to which a wireless device is performing the random access, the positioning node comprising a communicating unit configured to:

• transmit information to the radio network node, wherein the transmitted information indicates whether to use a first or a second random access transmission configuration when performing the positioning measurement, and
• receive a positioning measurement result from the radio network node,
• and the positioning node further comprising a processing circuit for handling the received result.