Title:
FRAME CAPTURING SYSTEM, FRAME CAPTURING METHOD, AND RECEIVER
Document Type and Number:
WIPO Patent Application WO/2001/015375
Kind Code:
A1
Abstract:
While continuing data communication through a communication channel, a frame is captured using a synchronous channel of a frequency different from that of the communication channel thereby to smoothly perform inter-satellite diversity and inter-satellite handover. During the period for which no data is communicated by means of a communication burst (31X) through a communication channel, a frame is captured by means of synchronous bursts (21Y, 21Z) through a synchronous channel of a different frequency. Since the synchronous bursts (21Y, 21Z) include synchronous words (23Y to 25Y, 23Z to 25Z), the timings of the synchronous words (23Y to 25Y, 23Z to 25Z) receivable during the period for which no data is communicated are increased. Alternatively, the synchronous bursts (21Y, 21Z) of the channel of the frequency which is determined for both the transmitter and receiver are transmitted/received during the period, and consequently the frame capture is smoothly carried out.
Inventors:
NAGASHIMA YASUYUKI (JP)
Application Number:
PCT/JP1999/004576
Publication Date:
March 01, 2001
Filing Date:
August 25, 1999
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NAGASHIMA YASUYUKI (JP)
NAGASHIMA YASUYUKI (JP)
International Classes:
H04J3/06; H04L7/08; H04L7/10; (IPC1-7): H04L7/08; H04B7/15; H04L7/10
Foreign References:
| JPH07508623A | 1995-09-21 | |||
| JPH1065600A | 1998-03-06 | |||
| JPH09271062A | 1997-10-14 | |||
| JPH1023504A | 1998-01-23 |
Attorney, Agent or Firm:
Mizoi, Shoji (Ofuna 2-chome Kamakura-shi Kanagawa, JP)
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