PROPAGATION PATH CHARACTERISTIC ESTIMATING DEVICE

Japanese Patent JP3394450

B2

PROBLEM TO BE SOLVED: To highly accurately estimate propagation path characteristics by checking a CRC error not for each frame but for each cell or packet and performing transmission control based on the checked result.
SOLUTION: Concerning received data at a mobile station, the CRC error is checked by a CRC check part 112. When the CRC error are detected in the continuous ATM cells of a reception channel closest to the transmission channel of a user channel, the degradation of a propagation path state is detected by a propagation path degradation detecting part 113, a transmission part 102 is controlled by a transmission control part 114, and data are temporarily stored in a memory and delayed. Mobile station side user data are received by an up channel 103 and a reception part 104, the CRC error is checked by a CRC error check part 105, the degradation of the conditions of the propagation path is judged, a transmission part 109 is controlled by the transmission control part 114, and data transmission is temporarily delayed. This transmission control prevents the unnecessary retransmission of data affected by fading by temporarily stopping transmission and delaying data excepting for the data of severe delay such as sounds.

WO/1999/013651	METHOD OF IMPROVING AIR INTERFACE PERFORMANCE IN RADIO TELEPHONE SYSTEM
WO/2010/005997	CLOSED FORM SINGULAR VALUE DECOMPOSITION

Stone Takamasu
Mitsuru Uesugi

JP18416898A

April 07, 2003

June 30, 1998

Click for automatic bibliography generation  

Matsushita Electric Industrial Co., Ltd

H04B7/005; (IPC1-7): H04B7/005

JP63250223A
JP936845A
JP9224030A
JP3104443A
JP8511400A

Koichi Washida

Previous Patent: THIN-WALLED HONEYCOMB STRUCTURAL BODY AND REINFORCING METHOD THEREOF

Next Patent: INFORMATION RECORDING DEVICE