Wireless communication system

• US 20020082011A1
• Filed: 12/21/2001
• Published: 06/27/2002
• Est. Priority Date: 12/27/2000
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Fujii, Kenichi, Hiroki, Shigeru
• Granted Patent: US 7,203,493 B2
• Time in Patent Office: Days
• US Class Current: 455/434
• CPC Class Codes: H04B 7/2662 Arrangements for Wireless System Synchronisation
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others

Abstract

A call in request is transmitted from a wireless base station to a wireless communication terminal apparatus when there is a call in from a service center. If the wireless communication terminal apparatus does not respond, the wireless base station is reset and, after the reset is completed, a call in request is transmitted to the wireless communication terminal apparatus again. In addition, if out of standby occurs, the wireless communication terminal apparatus notifies the wireless base station to that effect and the wireless base station changes a forward pattern of a notification signal.

Claims

1. A wireless communication system comprising a wireless communication control apparatus and a wireless communication apparatus,

the wireless communication control apparatus is connected to a public network, and

the wireless communication system controls transmission timing for transmitting a control signal from the wireless communication control apparatus to the wireless communication apparatus in a case where the wireless communication between the wireless communication control apparatus and the wireless communication apparatus is out of order.

2. A system according to claim 1, wherein the wireless communication control apparatus controls the transmission timing in a case where informing the wireless communication apparatus of an incoming call is failed.

3. A system according to claim 1, wherein the wireless communication control apparatus resets the transmission timing.

4. A system according to claim 1, wherein the wireless communication control apparatus sets the transmission timing such that collision with a control signal from another wireless communication system is avoided.

5. A system according to claim 1, wherein the wireless communication control apparatus controls the transmission timing in a case where an apparatus to be checked is designated by an incoming call and the wireless communication between the wireless communication control apparatus and the wireless communication apparatus related to the apparatus to be checked is out of order.

6. A system according to claim 1, wherein the wireless communication apparatus judges whether the wireless communication between the wireless communication control apparatus and the wireless communication apparatus is out of order or not, and the wireless communication control apparatus controls the transmission timing in a case where the wireless communication apparatus judges that the wireless communication between the wireless communication control apparatus and the wireless communication apparatus is out of order.

7. A system according to claim 1, wherein said wireless communication apparatus judges whether synchronization with the wireless communication control apparatus is not out of order or not, and the wireless communication control apparatus controls the transmission timing in a case where the wireless communication apparatus judges that synchronization with the wireless communication control apparatus is out of order.

8. A wireless communication control apparatus for controlling wireless communication with a wireless communication apparatus, comprising:

informing means for informing the wireless communication apparatus an incoming call in a case where the incoming call is received; and

control means for controlling transmission timing for transmitting a control signal to the wireless communication apparatus in a case where the wireless communication with the wireless communication apparatus is out of order.

9. A wireless communication apparatus comprising:

judging means for judging whether the wireless communication with the wireless communication control apparatus is out of order or not; and

request means for requesting the wireless communication control apparatus to control the transmission timing in a case where said judging means judges that the wireless communication with the wireless communication control apparatus is out of order.

10. A computer program or a storage medium for storing the computer program comprising program steps of:

informing the wireless communication apparatus an incoming call in a case where the incoming call is received; and

controlling transmission timing for transmitting a control signal to the wireless communication apparatus in a case where the wireless communication with the wireless communication apparatus is out of order.

11. A wireless communication control apparatus for performing wireless communication with a wireless communication apparatus, comprising:

holding means for holding an incoming call; and

informing means for informing the wireless communication apparatus of the incoming call according to timing when the wireless communication with the wireless communication is in order while the incoming call is held by said holding means.

12. A wireless communication control apparatus for performing wireless communication with a wireless communication apparatus, comprising:

receiving means for receiving a wireless signal from wireless communication apparatus; and

calling means for making an outgoing to a public network in a case where signal is not received by said receiving means within a predetermined timing.