Patent ID: 8731001

Claim:
An apparatus comprising: a processing system comprising at least one processor and a memory storing a set of computer instructions, wherein the processing system is configured to cause the apparatus at least to: receive information indicative of a propagation delay variation between at least a first transmission and a second transmission received at a user equipment, the first transmission being received from a first transmission point and the second transmission being received from a second transmission point; evaluate the information relating to the propagation delay variation; and based on the evaluation, determine if the second transmission point is acceptable as a participant in a cooperative multi-point joint processing transmission to the user equipment in which participants coordinate transmission of same data to arrive at the user equipment at a same time, wherein the information relating to the propagation delay variation comprises one or more of: information that phase modulation between the first and second transmissions is too great for advantageous jointly processed transmission, and information that a time offset between the first and second transmissions is too great for advantageous jointly processed transmission.