Title:
異なる周波数キャリアを用いたミリ波通信リンク適応
Document Type and Number:
Japanese Patent JP5822553
Kind Code:
B2
Abstract:
To realize quick adaptation to a communication link between a transmitter and a receiver by using two different frequency carriers. A receiver detects a preamble from a transmission bit string. When determining that a total sum of the number of modified bits exceeds a certain threshold in a range of a payload following the preamble (when detecting that a reception state of a communication link has been degraded), the receiver issues, to a transmitter, a request for changing a transmission parameter (four parameters may be used for enhancement/lowering) for the transmission bit string by using a communication link, which is a relatively-low-frequency carrier. On the other hand, the transmitter receives the request for change, and executes the request for changing the transmission parameter for the transmission bit string while maintaining transmission of a payload in the transmission bit string.
Inventors:
Koji Takano
Daiki Nakano
Yasuteru Koda
Daiki Nakano
Yasuteru Koda
Application Number:
JP2011134478A
Publication Date:
November 24, 2015
Filing Date:
June 16, 2011
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION
International Classes:
H04L1/00; H04W28/18
Domestic Patent References:
| JP10079724A | ||||
| JP2010252060A | ||||
| JP2001339458A | ||||
| JP2007036405A | ||||
| JP9069828A | ||||
| JP2005341604A |
Foreign References:
| WO2006008820A1 |
Attorney, Agent or Firm:
Takeshi Ueno
Tasaichi Tanae
Tasaichi Tanae