Indication of antenna coherence for phase difference of arrival and angle of departure estimation

A network entity, comprising:

• a memory;
• a communication interface;
• and
• a processor coupled to the memory and the communication interface,
• wherein the processor is configured to provide, to a first node through the communication interface, an almanac message indicating a set of transmission points associated with a second node as being collocated and configured to transmit coherent signals, and
• wherein between any two transmission points in the set of transmission points, signals transmitted from the two transmission points are distinguishable from each other in a time domain, a frequency domain, a code domain or any combination thereof.

A method of operating a first node, comprising:

• receiving, from a network entity, an almanac message indicating a set of transmission points associated with a second node as being collocated and configured to transmit coherent signals;
• receiving the coherent signals transmitted from at least two transmission points of the set of transmission points of the second node;
• and
• determining one or more phase difference of arrivals (PDoAs) among the coherent signals, wherein between any two transmission points in the set of transmission points, signals transmitted from the two transmission points are distinguishable from each other in a time domain, a frequency domain, a code domain, or any combination thereof.