Title:
通信装置及び通信方法
Document Type and Number:
Japanese Patent JP4701018
Kind Code:
B2
Abstract:
Data communication using wireless service discovery is continuously provided even if a radio wave condition temporarily deteriorates or movement of an apparatus occurs. If a temporary deterioration in wireless radio wave environment is found in a communication apparatus including a service discovery function, a search is made again at a raised transmission power. Forcible disconnection processing from a higher-level layer is prevented when communication at the network layer level is ongoing.
Inventors:
Fumihide Goto
Tetsuo Ido
Kazutoshi Hara
Tetsuo Ido
Kazutoshi Hara
Application Number:
JP2005181895A
Publication Date:
June 15, 2011
Filing Date:
June 22, 2005
Export Citation:
Assignee:
Canon Inc
International Classes:
H03M13/27; H04W52/36; G06F21/00; G06Q10/00; G06Q30/00; G07F17/16; G09C1/00; H03M13/23; H03M13/29; H04B1/00; H04B7/005; H04B7/02; H04B7/06; H04B7/08; H04B7/216; H04B7/26; H04B14/04; H04K1/00; H04L1/00; H04L1/06; H04L1/08; H04L1/18; H04L9/06; H04L9/10; H04L9/14; H04L9/32; H04L12/56; H04L27/26; H04L69/40; H04W8/00; H04W52/48; H04W48/16
Domestic Patent References:
| JP3231523A | ||||
| JP2005102164A | ||||
| JP2003070072A | ||||
| JP2001332987A | ||||
| JP2000201374A |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa