Methods and apparatus for compensating for propagation delays in coordinated multi-point transmission

• Main Authors: KOIVISTO TOMMI T, ROMAN TIMO E, SCHOBER KAROL, ENESCU MIHAI
• Format: Patent
• Language: English
• Published: 28.01.2014
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; JAMMING OF COMMUNICATION; SECRET COMMUNICATION; TRANSMISSION

Systems and techniques for communication using coordinated multi-point transmission. In one embodiment, an apparatus comprises at least one processor and a memory storing a set of computer instructions, configured. The processor is configured to cause the apparatus to determine a linear phase variation between at least first and second transmissions from first and second transmission points based at least in part on a propagation delay difference between the first and second transmissions, and transmit the phase variation information for at least the first and the second transmissions. An apparatus configured to operate as a transmission point in a network receives linear phase variation information indicating phase variation experienced by at least one user equipment resulting from a propagation delay difference between at least the apparatus and a second apparatus operating as a second transmission point and manages transmission so as to control phase variation resulting from the propagation delay difference.