US 9,071,291 B2 · Method and apparatus for MIMO-based multiple base station collaborative communication

Abstract

A solution for multiple base station collaborative communication in TDD (Time Division Duplex) and FDD (Frequency Division Duplex) systems is provided. To be specific, a serving base station and coordinating base station transmit detection signals with specific Multiple Input Multiple Output (MIMO) features on one or more communication resources. The mobile station measures the detection signals on the one or more communication resources and generates indication information of the recommended collaborative communication modes based on the measurement results. Preferably the indexes of the time-frequency resources corresponding to the recommended collaborative communication modes are reported to the serving base station. Then the serving base station schedules at least one of the one or more mobile stations according to the indication information reported by the one or more stations and provides MIMO communication manner for the mobile station scheduled. The coverage of the cells is improved, the cell edge user throughput is increased and the inter-cell interference between neighboring base stations is decreased by exploiting the invention. Preferably the amount of uplink feedback information is decreased and the uplink bandwidth is saved.

Claims20

Dependent claims

A method of serving a mobile station in a MIMO-based wireless communication network, comprising:

sending respective detection signals with MIMO features from a serving base station and one or more coordinating base stations to a mobile station on respective communication resources such that the mobile station can identify the corresponding base station from which the respective detection signals were sent;
obtaining indication information from the mobile station at the serving base station, the indication information related to at least one of the communication resources and the MIMO features associated with the respective detection signals, the indication information identifying a collaborative communication mode recommended by the mobile station, the collaborative communication mode indicating a combination of the serving base station and the one or more coordinating base stations recommended for MIMO communication service to the mobile station;
and
scheduling the mobile station for MIMO communication service via the recommended collaborative communication mode based at least in part on the indication information obtained from the mobile station.

1 more element

A method of serving a mobile station in a MIMO-based wireless communication network, comprising:

sending first detection signals with MIMO features from a serving base station to a mobile station on first communication resources;
sending second detection signals with MIMO features from a coordinating base station to the mobile station on second communication resources, wherein the first and second communication resources are such that the mobile station can identify the corresponding base station from which the first and second detection signals were sent;
obtaining indication information from the mobile station at the serving base station, the indication information related to at least one of the first and second communication resources and the MIMO features associated with the first and second detection signals, the indication information identifying a collaborative communication mode recommended by the mobile station, the collaborative communication mode indicating a combination of the serving base station and the coordinating base station recommended for MIMO communication service to the mobile station;
and
scheduling the mobile station for MIMO communication service via the recommended collaborative communication mode based at least in part on the indication information obtained from the mobile station.

2 more elements

A method of serving a mobile station in a MIMO-based wireless communication network, comprising:

sending first detection signals with MIMO features from a serving base station to a mobile station on first communication resources;
sending respective detection instruction information from the serving base station to one or more coordinating base stations, the respective detection instruction information instructing the corresponding coordinating base station to send second detection signals with MIMO features to the mobile station on respective second communication resources;
obtaining indication information from the mobile station at the serving base station, the indication information related to at least one of the corresponding first and second communication resources and the MIMO features associated with the respective first and second detection signals, the indication information identifying a collaborative communication mode recommended by the mobile station, the collaborative communication mode indicating a combination of the serving base station and the one or more coordinating base stations recommended for MIMO communication service to the mobile station;
and
scheduling the mobile station for MIMO communication service via the recommended collaborative communication mode based at least in part on the indication information obtained from the mobile station.

2 more elements

Dependencies are inferred from the claim text.

Method and apparatus for MIMO-based multiple base station collaborative communication

Life of this patent

Method and apparatus for MIMO-based multiple base station collaborative communication

Life of this patent

Abstract

Claims20