Signalling mechanism for multi-tiered intra-band carrier aggregation

摘要

Methods of performing intra-band carrier aggregation in a multi-tiered wireless network include determining a capability of a user equipment unit located within an overlapping coverage area of first and second radio network nodes to simultaneously receive data on a first component carrier and on a second component carrier from the first and second network nodes, and simultaneously transmitting data to the user equipment unit using the first and second component carriers from different radio network nodes in response to determining that the user equipment unit is capable of simultaneously receiving data on the first component carrier and on the second component carrier from different radio network nodes.

主权项

1. A method of performing intra-band carrier aggregation in a multi-tiered wireless network including a first radio network node that uses a first component carrier in a first frequency band and a second radio network node that is not co-located with the first radio network node and that uses a second component carrier in the first frequency band, the method comprising:
determining an operability of a user equipment unit to simultaneously receive data on the first component carrier from the first radio network node and on the second component carrier from the second radio network node; and transmitting first data to the user equipment unit from the first radio network node using the first component carrier simultaneous with the second radio network node transmitting second data to the user equipment unit using the second component carrier in response to determining that the user equipment unit is operable to simultaneously receive data on the first component carrier from the first radio network node and on the second component carrier from the second radio network node; wherein a time difference of arrival at the user equipment unit for transmissions from the first and second radio network nodes is greater than the smaller of a first cyclic prefix duration or a second cyclic prefix duration, the first cyclic prefix duration being of a first symbol transmitted by the first radio network node and the second cyclic prefix duration being of a second symbol transmitted by the second radio network node.