COMMUNICATION SYSTEM AND MOBILE STATION APPARATUS

• US 20120009959A1
• Filed: 02/12/2010
• Published: 01/12/2012
• Est. Priority Date: 03/12/2009
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Yamada, Shohei, Shimezawa, Kazuyuki, Nogami, Toshizo, Suzuki, Shoichi, Hirakawa, Isao, Kato, Yasuyuki, Aiba, Tatsushi
• Application Number:
  US13/255,592
• Publication Number:
  US 20120009959A1
• Time in Patent Office: Days
• US Class Current: 455/507
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 2025/03426 transmission using multiple-input and multiple-output channels
• CPC Class Codes: H04L 2025/03802 Signalling on the reverse channel
• CPC Class Codes: H04L 25/0224 using sounding signals
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 72/04 Wireless resource allocation

Abstract

A mobile communication system comprised of one or a plurality of base station apparatuses and a mobile station apparatus; characterized in that the one or plurality of base station apparatuses positions one or a plurality of logical antenna port reference signals, which are inside one or a plurality of logical antenna ports respectively, to different sub-frames; and the mobile station apparatus uses the logical antenna port reference signals of the one or plurality of logical antenna ports to perform channel status measurement.

Claims

1. A mobile communication system comprised of a base station apparatus and a mobile station apparatus, wherein

the one or more base station apparatuses dispose a reference signal of each one or more logical antenna ports of one or more logical antenna ports in different sub-frames,

the mobile station apparatus measures a channel state by using a reference signal of each logical antenna port of the one or more logical antenna ports to.

2. A mobile communication system comprised of a base station apparatus and a mobile station apparatus, wherein

the base station apparatus broadcasts number of logical antenna ports,

the mobile station apparatus identifies a sub-frame disposed with a reference signal of each logical antenna port of one or more logical antenna ports from the broadcasted number of logical antenna ports.

3. A mobile station apparatus in a mobile communication system comprised of a base station apparatus and the mobile station apparatus, wherein

a reference signal of each one or more logical antenna ports of one or more logical antenna ports being disposed in different sub-frames,

the mobile station apparatus measures a channel state by using a reference signal of each logical antenna port of the one or more logical antenna ports to.

4. A mobile station apparatus in a mobile communication system comprised of a base station apparatus and the mobile station apparatus, wherein

a reference signal of each one or more logical antenna ports of one or more logical antenna ports being disposed in different sub-frames,

the mobile station apparatus identifies a sub-frame disposed with a reference signal of each logical antenna port of the one or more logical antenna ports from number of logical antenna ports broadcasted from the base station apparatus.