Method of cooperative MIMO wireless communication and base station using the same

摘要

The present disclosure proposes a method of cooperative MIMO wireless communication, and a base station using the same. A base station would have a plurality of radio remote units (RRUs), and each of the RRUs may have a specific radio coverage and a plurality of antennas coupled to each of the RRUs. The function of the base station may include receiving a UE information, receiving a service flow, deriving a service type of the service flow, and determining a MIMO scheme, modulating the service flow into a MIMO stream according to the MIMO scheme, allocating a plurality of resource blocks, wherein the resource blocks may correspond to a portion or all of the RRUs, distributing the MIMO stream into a plurality of downlink sub streams and transmitting the downlink sub streams through the resource blocks by the RRUs corresponding to the resource blocks.

主权项

1. A method of cooperative multiple-input-multiple-output (MIMO) wireless communication, configured for a base station with a plurality of radio remote units (RRUs), wherein each of the RRUs respectively has a radio coverage and a plurality of antennas are coupled to each of the RRUs, wherein the RRUs locate on different geographical locations, the method comprising:
receiving an user equipment (UE) information comprising a location of the UE; receiving a service flow from an application layer service provider; deriving a service type of the service flow, wherein the service type comprises a broadcast service type, a multicast service type, and a unicast service type; determining a MIMO scheme for modulating the service flow into a MIMO stream for the UE according to the service type and the UE information, wherein if the location of the UE is in an area within the radio coverage of at least two of the RRUs, the MIMO scheme of the UE is determined to be a site MIMO scheme performed by the at least two of the RRUs, wherein the MIMO scheme comprises an antenna scheme, or a combination of the antenna scheme and a site diversity scheme, wherein the antenna scheme comprises an antenna multiplexing scheme and an antenna diversity scheme; allocating a plurality of resource blocks to part or all of the RRUs according to the MIMO scheme, the UE information and the service type, modulating the service flow into the MIMO stream according to the MIMO scheme; and distributing the MIMO stream into a plurality of downlink sub streams and transmitting the downlink sub streams through the resource blocks by the part or all of the RRUs, wherein the at least two of the RRUs cooperatively transmit the downlink sub streams for the UE according to the site MIMO scheme.