Wireless communication system and communication control method

A technology of wireless communication system and control device, which is applied in wireless communication, radio transmission system, diversity/multi-antenna system, etc., can solve the problems of not yet proposed communication steps, not proposed, antenna selection, etc., so as to improve frequency utilization efficiency, reduce Small differences, the effect of improving communication quality
CN102301774AInactive Publication Date: 2011-12-28HITACHI LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI LTD
Publication Date
2011-12-28
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

In a wireless communication system, a plurality of base stations each comprise a plurality of cells and a terminal communicates with the base stations. Each of the base stations is equipped with one or a plurality of antennas. The base stations transmit first reference signals that do not overlap with at least those of neighborhood base stations and are unique to the antennas. The terminal receives the first reference signals, estimates the reception powers of the first reference signals transmitted from the respective antennas, selects, based on the estimation results of the reception powers, a plurality of the antennas suitable for communication, and transmits the antenna selection results to the base stations. The base stations refer to the antenna selection results transmitted from the terminal to assign the antennas belonging to the different cells to the terminal and notify the terminal of the results of assigning the antennas.
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Description

technical field

[0001] The present invention relates to a wireless communication system, in particular to a wireless communication system in which a terminal communicates with multiple base stations. Background technique

[0002] Figure 31 It is a figure explaining the existing cellular system.

[0003] Two base stations (101-1, 101-2) respectively form cells (102-1, 102-2). The three terminals (103-1, 103-2, 103-3) in the cell 102-1 communicate with the base station 101-1, and the three terminals (103-4, 103-5, 103- 6) Communicate with the base station 101-2.

[0004] Each base station and each terminal has multiple antennas. Each base station performs MIMO (Multiple Input Multiple Output) communication with one terminal belonging to a cell formed by the base station at a certain moment. In addition, in a multi-carrier communication system such as OFDMA (Orthogonal Frequency Division Multiple Access: Orthogonal Frequency Division Multiple Access), each carrier is ortho...

Claims

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