Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Patent
1995-06-15
1999-10-12
Nguyen, Chau
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
370347, 370477, 375222, H04L 12413
Patent
active
059663758
ABSTRACT:
Radio communication method and apparatus that performs communication as follows. When a radio communication apparatus receives data transmitted by data terminal equipment, the radio communication apparatus identifies the type of the data, and checks whether another data terminal equipment is transmitting data by detecting a carrier. If no carrier is detected, the radio communication apparatus monitors occurrence of a carrier for a time period determined depending on the priority of data to be transmitted. After elapse of the above time period, it is determined whether another data terminal equipment is transmitting a carrier indicating intention to start data transmission. If it is concluded that no such a carrier is detected, the radio communication apparatus transmits a carrier a predetermined number of times, and then starts data transmission. This technique allows data having a high priority to be transmitted earlier than low-priority data.
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Canon Kabushiki Kaisha
Nguyen Chau
LandOfFree
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