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AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsZhiheng Guo, Shachua Li, Jinhua Liu, Zhan Zhang
Estimating the term…
Techniques are disclosed for synchronizing frequency among a cluster of coordinated transmission points cooperating in a coherent joint transmission. In some embodiments, one transmission point is set (510) as a reference transmission point for a group of coordinated transmission points. Each of one or more other transmission points in the group receives (530) a specified downlink reference signal from the reference transmission point, measures (540) its frequency offset relative to the reference point, and compensates (550) the frequency offset in baseband processing or by a radio adjustment. Which transmission point acts as the reference transmission point is statically defined, in some embodiments, or dynamically configured, in others. Likewise, which time-frequency resources are used for the reference signal may be statically defined or dynamically configured. In some embodiments, information identifying the reference transmission point and/or specifying the radio resource locations and durations of the reference signal is distributed to the synchronizing transmission points.
A method, in a synchronizing transmission point among a cluster of coordinated transmission points in a wireless network, the cluster including a reference transmission point and one or more synchronizing transmission points, for synchronizing a carrier frequency for the synchronizing transmission point with a carrier frequency for the reference transmission point, characterized in that the method comprises:
A synchronizing transmission point adapted to operate in a cluster of coordinated transmission points in a wireless network, the cluster including a reference transmission point and one or more synchronizing transmission points, characterized in that the synchronizing transmission point comprises:
12-19. (canceled)
A synchronizing transmission point adapted to operate in a cluster of coordinated transmission points in a wireless network, the cluster including a reference transmission point and one or more synchronizing transmission points, the synchronizing transmission point comprising a receiver circuit and a processing circuit characterized in that the processing circuit is configured to:
A method, in a reference transmission point among a cluster of coordinated transmission points in a wireless network, the cluster including the reference transmission point and one or more synchronizing transmission points, for synchronizing a carrier frequency for the one or more synchronizing transmission points with a carrier frequency for the reference transmission point, characterized in that the method comprises:
A reference transmission point adapted to operate in a cluster of coordinated transmission points in a wireless network, the duster including the reference transmission point and one or more synchronizing transmission points, the reference transmission point comprising a transmitter circuit, a processing circuit, and a network interface circuit characterized in that the processing circuit is adapted to:
A synchronization coordinator node adapted to operate with a cluster of coordinated transmission points in a wireless network, the cluster including the reference transmission point and one or more synchronizing transmission points, characterized in that the synchronization coordinator node is adapted to:
Dependencies are inferred from the claim text.