Mobile user terminal, mobile communication system, base station, and communication method

• US 8,295,866 B2
• Filed: 06/29/2011
• Issued: 10/23/2012
• Est. Priority Date: 09/20/2006
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Obuchi, Kazuhisa, Yano, Tetsuya, Miyazaki, Shunji, Nakagawa, Takao
• Primary Examiner(s): Ferguson, Keith
• Application Number:
  US13/172,239
• Publication Number:
  US 20110263210A1
• Time in Patent Office: 482 Days
• Field of Search: 455/502, 455/500, 455/517, 455/522, 455/69, 455/68, 455/67.11, 455423-425, 455/509, 455/452.1, 455/422.1, 455/403, 455/550.1, 370/310, 370/328, 370/329, 370/343, 370/345, 370/350, 370/480, 370/503, 370/510, 370/512
• US Class Current: 455/502
• CPC Class Codes: H04B 17/24 with feedback of measurements to the transmitter
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A mobile user terminal includes a receiver which receives a signal, and a processor which measures downlink channel quality based on the signal and does not transmit downlink channel quality information and an uplink pilot signal simultaneously at a period which the mobile user terminal is a state of transmission off in an intermittent fashion.

Claims

1. A method for using a mobile user terminal comprising:

receiving a signal; and

measuring downlink channel quality based on the signal at a first period in an intermittent fashion,

wherein downlink channel quality information and an uplink pilot signal simultaneously is not transmitted at a second period which the mobile user terminal is a state of transmission off in an intermittent fashion.

2. A method for using a mobile user terminal as claimed in claim 1, wherein the second period is different from the first period.