Wireless communication apparatus and communication system

Patent metadata

Field	Value
Publication number	US-2016007291-A1
Application number	US-201414768902-A
Country	US
Kind code	A1
Filing date	Jan 27, 2014
Priority date	Feb 20, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

A wireless terminal apparatus in a communication system shares a reference cycle with a data center. The reference cycle includes an incoming-call acceptance ready time that ranges from an incoming-call acceptance start time point to an incoming-call acceptance end time point. The incoming-call acceptance start time point corresponds to an outgoing-call generation time point of generating an outgoing-call by the data center. The outgoing-call generation end time point is set in consideration of a delay in the outgoing-call. The wireless terminal apparatus is set in an intermittent standby state that is contained in the incoming-call acceptance ready time. In the remaining time excluding the incoming-call acceptance ready time within the reference cycle, the wireless terminal apparatus is set in a sleep state in which no incoming-call is accepted.

First claim

What is claimed is:

1 . A wireless communication apparatus
having a function of waiting for an incoming-call in an intermittent standby state that intermittently accepts an incoming-call and sharing a reference cycle with a communication target apparatus being a communication partner, the wireless communication apparatus comprising:
an intermittent standby setting section that sets the wireless communication apparatus into the intermittent standby state,
the intermittent standby state being caused to be contained in an incoming-call acceptance ready time within the reference cycle shared with the communication target apparatus,
the incoming-call acceptance ready time ranging
from an incoming-call acceptance start time point corresponding to an outgoing-call generation time point at which the communication target apparatus generates an outgoing-call
to an incoming-call acceptance end time point which is set in consideration of delay in the outgoing-call; and

a sleep state setting section that sets the wireless communication apparatus into a sleep state that accepts no incoming-call in a remaining time within the reference cycle excluding the incoming-call acceptance ready time.

2 . The wireless communication apparatus according to claim 1 , further comprising:
a sleep shift inhibition section that inhibits shift to the sleep state when an incoming-call from the communication target apparatus is accepted in the intermittent standby state.

3 . The wireless communication apparatus according to claim 2 , wherein
the sleep shift inhibition section inhibits shift to the sleep state, when an incoming-call from the communication target apparatus is accepted in the intermittent standby state, until a process accompanying the incoming-call is finished.

4 . The wireless communication apparatus according to claim 1 , further comprising:
a delay acquisition section that obtains delay information regarding network delay time in communication with the communication target apparatus; and an incoming-call acceptance time setting section that sets at least one of the incoming-call acceptance start time point or the incoming-call acceptance end time point based on the delay information.

5 . A communication system comprising:
a wireless communication apparatus according to claim 1 , having a function of waiting for an incoming-call in an intermittent standby state that intermittently accepts an incoming-call; and a communication target apparatus being a communication partner of the wireless communication apparatus, the communication target apparatus comprising:
an initial outgoing-call generation section that generates an outgoing-call at an outgoing-call generation time point that is preset as a time point of generating an outgoing-call to the wireless communication apparatus within a reference cycle that is shared with the wireless communication apparatus, when transmitting any information to the wireless communication apparatus.

6 . The communication system according to claim 5 , wherein
the communication target apparatus comprises:
a first response determination section that determines whether a response to an outgoing-call generated from the communication target apparatus itself is received from the wireless communication apparatus; and
a first outgoing-call re-generation section that generates an outgoing-call at a next outgoing-call generation time point, when the first response determination section determines that no response to the outgoing-call is received from the wireless communication apparatus.

7 . The communication system according to claim 5 , wherein
the communication target apparatus comprises:
a second response determination section that determines whether a response to an outgoing-call generated by the communication target apparatus itself is received from a wireless communication apparatus; and
a second outgoing-call re-generation section that, when the second response determination section determines that no response to the outgoing-call is received from the wireless communication apparatus, generates an outgoing-call again at a time point obtained by adding or subtracting a preset predetermined time to or from a next outgoing-call generation time point, respectively.

8 . The communication system according to claim 5 , further comprising:
a plurality of the wireless communication apparatuses, wherein
the initial outgoing-call generation section of the communication target apparatus sets the different out-going time points to the respective wireless communication apparatuses to be dispersed.

Assignees

• Denso Corp

Inventors

• Mizutani Taizo

Classifications

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W52/0241

  where no transmission is received, e.g. out of range of the transmitter · CPC title