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

Patent metadata

Field	Value
Publication number	US-9071291-B2
Application number	US-200813125304-A
Country	US
Kind code	B2
Filing date	Oct 31, 2008
Priority date	Oct 31, 2008
Publication date	Jun 30, 2015
Grant date	Jun 30, 2015

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.

First claim

The invention claimed is:

1. 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.

2. The method according to claim 1 , further comprising:
sending respective detection instruction information from the serving base station to the one or more coordinating base stations, the respective detection instruction information instructing the corresponding coordinating base station to send the respective detection signals with the MIMO features to the mobile station on the respective communication resources.

3. The method according to claim 2 , further comprising:
obtaining channel related report information from the mobile station at the serving base station;
determining the respective communication resources and the MIMO features associated with the respective detection signals based at least in part on the channel related report information, and
generating the respective detection instruction information associated with the one or more coordinating base stations based at least in part on the channel related report information,
wherein the detection instruction information associated with each coordinating base station includes the communication resources and the MIMO features associated with the detection signals associated with the corresponding coordinating base station.

4. The method according to claim 1 , further comprising:
obtaining channel related report information from the mobile station at the serving base station; and
determining the respective communication resources and the MIMO features associated with the respective detection signals based at least in part on the channel related report information.

5. The method according to claim 1 , further comprising:
sending measure instruction information from the serving base station to the mobile station instructing the mobile station to measure the respective detection signals from the one or more coordinating base stations and the serving base station on at least a portion of the respective communication resources; and
sending report instruction information from the serving base station to the mobile station indicating a manner and condition to report the indication information to the serving base station.

6. The method according to claim 1 , wherein, if the recommended collaborative communication mode involves the serving base station and at least one coordinating base station providing data services to the mobile station at the same time, the method further comprising:
providing the MIMO communication service to the mobile station from the serving base station and the at least one coordinating base station via the recommended collaborative communication mode according to the indication information obtained from the mobile station.

7. The method according to claim 1 , wherein the MIMO features include at least one of features used under beamforming processing and features used under codeword-weighting processing.

8. The method according to claim 1 , wherein, if the recommended collaborative communication mode involves the serving base station providing data services for the corresponding mobile station and at least one coordinating base station suppressing interference to the corresponding mobile station, the method further comprising:
providing the MIMO communication service to the mobile station from the serving base station with interference suppression by the at least one coordinating base station via the recommended collaborative communication mode according to the indication information obtained from the mobile station.

9. The method according to claim 1 , wherein the communication resources include at least one of a time resource, a frequency resource, and a coding scheme.

10. 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.

11. The method according to claim 10 , further comprising:
obtaining detection instruction information from the serving base station at the coordinating base station, the detection instruction information instructing the coordinating base station to send the second detection signals with the MIMO features to the mobile station on the second communication resources.

12. The method according to claim 11 , wherein the detection instruction information from the serving base station includes the second communication resources and the MIMO features associated with the second detection signals.

13. The method according to claim 11 , wherein the MIMO features include at least one of features used under beamforming processing and features used under codeword-weighting processing.

14. The method according to claim 10 , wherein the first and second communication resources include at least one of a first and second time resource, a first and second frequency resource, and a first and second coding scheme.

15. The method according to claim 10 , wherein, if the recommended collaborative communication mode from the mobile station involves the serving base station and the coordinating base station providing data services for the corresponding mobile station at the same time, the method further comprising:
providing the MIMO communication service to the mobile station from the serving base station and the coordinating base station via the recommended collaborative communication mode accordin

Assignees

• Zhu Xiaolong
• Li Dong
• Song Yang
• Alcatel Lucent

Inventors

• Zhu Xiaolong
• Li Dong
• Song Yang

Classifications

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04L5/0035

  Resource allocation in a cooperative multipoint environment · CPC title

• H04B7/024 Primary

  Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems · CPC title

• H04W72/1278

  Electricity · mapped topic