Mobile station device and communication partner selection...

Details Mobile station device and communication partner selection... Mobile station device and communication partner selection...

2005-11-01

2010-11-30

Cho, Un C (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S334000, C370S331000, C455S436000, C455S437000, C455S452200

Reexamination Certificate

active

07843887

ABSTRACT:
It is possible to surely improve the throughput in a handover area in the MIMO communication and increase the cell coverage. Channel estimation units (104-1, 104-2) perform a channel estimation by using a common pilot signal transmitted from each base station device and acquire a channel matrix for each cell. Singular value decomposition processing units (105-1, 105-2) perform singular value decomposition processing by using a channel matrix corresponding to each cell. Channel capacity calculation units (106-1, 106-2) compare a singular value for each path to a threshold value and calculate the number of singular values above a predetermined threshold value as the channel capacity. A cell selection unit (107) compares the channel capacity sizes and selects a base station device corresponding to a greater channel capacity.

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3GPP TR 25.848 v4.0.0. “Physical layer aspects of UTRA High Speed Downlink Packet Access” (section 6.4), Mar. 2001, pp. 14-16.
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