Positioning

A method comprising:

• receiving configuration information for configuring an apparatus to receive a first Reference Signal (RS) and a second RS, wherein the configuration information comprises information indicative of:
• a first time-frequency resource allocated to the first RS, and
• a second time-frequency resource allocated to the second RS,
• wherein an allocation of at least one of the first or second time-frequency resources is based, at least in part, on:
• an estimate of a coherence time of a channel between the apparatus and a node of a Radio Access Network, and
• an estimate of a coherence bandwidth of the channel;
• receiving, based at least in part on the configuration information, the first and second RSs;
• determining a phase offset between the received first RS and the received second RS;
• adjusting a phase of at least one of the first and second received RSs based, at least in part, on the phase offset;
• and
• generating a third RS for use in position estimation, wherein the third RS is generated based, at least in part, on:
• one of the first and second RSs, and
• an adjusted other of the first and second RSs.

A non-transitory computer program product comprising instructions, which when executed by an apparatus, cause the apparatus to perform:

• receiving configuration information for configuring the apparatus to receive a first Reference Signal (RS) and a second RS, wherein the configuration information comprises information indicative of:
• a first time-frequency resource allocated to the first RS, and
• a second time-frequency resource allocated to the second RS,
• wherein an allocation of at least one of the first or second time-frequency resources is based, at least in part, on:
• an estimate of a coherence time of a channel between the apparatus and a node of a Radio Access Network, and
• an estimate of a coherence bandwidth of the channel;
• receiving, based at least in part on the configuration information, the first and second RSs;
• determining a phase offset between the received first RS and the received second RS;
• adjusting a phase of at least one of the first and second received RSs based, at least in part, on the phase offset;
• and
• generating a third RS for use in position estimation, wherein the third RS is generated based, at least in part, on:
• one of the first and second RSs, and
• an adjusted other of the first and second RSs.