Title:
A collision detection device, a communication apparatus, the collision detection method, and a program
Document Type and Number:
Japanese Patent JP6161137
Kind Code:
B2
Abstract:
A transmission part transmits a packet by radio. A power detection part performs, at a given cycle, sampling of power of a spatial radio signal in a packet transmission period during which the transmission part transmits the packet. A collision detection part calculates, as an index value, at least one of the average value and the degree of variation of power of the spatial radio signal in the packet transmission period on the basis of sampled data obtained in the sampling by the power detection part. The collision detection part also determines a reference value on the basis of transmission power of the packet. The collision detection part detects whether or not collision of the packet is present by comparing the index value with the reference value.
Inventors:
Shao Peng
Akira Matsumoto
Iwami Wada
Baba Yuki
Akira Matsumoto
Iwami Wada
Baba Yuki
Application Number:
JP2015544770A
Publication Date:
July 12, 2017
Filing Date:
September 05, 2014
Export Citation:
Assignee:
NEC Communication Systems, Ltd.
International Classes:
H04W24/08; H04W74/08; H04W84/12
Domestic Patent References:
| JP11252080A | ||||
| JP2004193987A | ||||
| JP2013005097A | ||||
| JP9064884A | ||||
| JP2007096902A |
Attorney, Agent or Firm:
Baba Shiba
Sakai Hiromi
Sakai Hiromi
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