Title:
移動車運行制御システムと無線通信方法
Document Type and Number:
Japanese Patent JP3601767
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To substantially prevent a communication from being broken by changing a communication partner to the adjacent in-communication repeater (AP) which has the largest reception intensity indicated by acquired adjacent AP data among adjacent APs when the reception intensity of a signal oscillated by an AP is less than a given threshold. SOLUTION: Data indicating adjacent APs are registered in a corresponding high-speed roaming table (S1). A moving vehicle acquires data indicating the corresponding adjacent APs from an AP in communication (S2). The moving vehicle measures the signal intensity from the AP in communication (S3). When the signal intensity becomes less than the given threshold (S4), the reception intensity values of signals sent from the respective adjacent AP are measured (S5). When some measured reception intensity is larger than the given threshold (S6), the moving vehicle changes its connection destination from the AP in communication to the adjacent AP having the maximum reception intensity (fast roaming) (S7).
Inventors:
Noriyuki Unose
Hideya Yamamuro
Hideya Yamamuro
Application Number:
JP21603199A
Publication Date:
December 15, 2004
Filing Date:
July 30, 1999
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
H04B7/26; H04W36/08; H04W36/30; G05D1/02; (IPC1-7): G05D1/02; H04B7/26; H04Q7/22
Domestic Patent References:
| JP64009508A | ||||
| JP10290210A | ||||
| JP1303817A | ||||
| JP7264655A | ||||
| JP10501392A | ||||
| JP1146635U | ||||
| JP5168059A | ||||
| JP6237212A |
Attorney, Agent or Firm:
Minoru Kudo