Radio apparatus capable of detecting its position and position search method
First Claim
1. A radio apparatus comprising:
- positioning means for determining a position of said radio apparatus;
receiving means for receiving a radio signal;
checking means for checking whether said radio signal includes a search request requesting the position of said radio apparatus;
judging means for judging whether said apparatus can determine its position;
sending means for sending a message to a sender of said radio signal in response to said search request if said judging means judges that said apparatus cannot determine its position;
wherein said message comprises the position of a base station located nearest to said radio apparatus;
said radio apparatus further comprising storing means for storing said message;
setting means for setting a response hold state if said judging means determines that said radio apparatus cannot determine its position;
identification means for checking the identification of the sender of said radio signal after said response hold state is set; and
reading means for reading the message stored in said storing means after said response hold state is set;
wherein after said message is read from said storing means, said response hold state ends and said sending means sends said message.
1 Assignment
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Accused Products
Abstract
When receiving an incoming call, a portable telephone that receives a search request judges whether or not this incoming call is the search request sent from a second portable telephone, which is a source of the search request. When the portable telephone judges that the incoming call is the search request sent from the second portable telephone, it is judged whether or not the receiving portable telephone is capable of determining its position information. When the portable telephone is incapable of determining its position information, the portable telephone automatically switches to a response hold state and transmits a search response message to the second portable telephone based on information stored in advance. Further, when the portable telephone is capable of determining its position information, the portable telephone determines its position information and transmits the position information to the portable telephone.
15 Citations
32 Claims
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1. A radio apparatus comprising:
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positioning means for determining a position of said radio apparatus; receiving means for receiving a radio signal; checking means for checking whether said radio signal includes a search request requesting the position of said radio apparatus; judging means for judging whether said apparatus can determine its position; sending means for sending a message to a sender of said radio signal in response to said search request if said judging means judges that said apparatus cannot determine its position; wherein said message comprises the position of a base station located nearest to said radio apparatus; said radio apparatus further comprising storing means for storing said message; setting means for setting a response hold state if said judging means determines that said radio apparatus cannot determine its position; identification means for checking the identification of the sender of said radio signal after said response hold state is set; and reading means for reading the message stored in said storing means after said response hold state is set; wherein after said message is read from said storing means, said response hold state ends and said sending means sends said message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A radio apparatus comprising:
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a receiver that receives a radio signal; a receiver controller that checks whether said radio signal includes a search request requesting the position of said radio apparatus; a positioning mechanism that judges whether said apparatus can determine its position and, if possible, determines the position of said radio apparatus; a transmitter that sends a message to a sender of said radio signal in response to said search request if said position mechanism determines that said apparatus cannot determine is position information; wherein said message comprises the position of a base station located nearest to said radio apparatus; further comprising a memory that stores said message; a controller that sets a response hold state if said positioning mechanism judges that said radio apparatus cannot determine its position; identification means that checks the identification information of the sender of said radio signal after said response hold state is set; and reading means that reads the message stored in said memory after said response hold state is set; wherein after said message is read from said storing means, said response hold state ends and said transmitter sends said message. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A position search system including a first radio apparatus and a second radio apparatus, wherein said first radio apparatus comprises:
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positioning means for said first radio apparatus to determine its position; receiving means for receiving a radio signal from said second radio apparatus; judging means for judging whether said first radio apparatus can determine its position; checking means for checking whether said radio signal includes a search request requesting the position of said first radio apparatus; sending means for sending a message to said second radio apparatus in response to said search request if said judging means judges that said first radio apparatus cannot determine its position; wherein said message comprises the position of a base station located nearest to said radio apparatus; wherein said first radio apparatus further comprises storing means for storing said message; setting means for setting a response hold state if said judging means determines that said first radio apparatus cannot determine its position; identification means for checking the identification information of the sender of said radio signal after said response hold state is set; and reading means for reading the message stored in said storing means after said response hold state is set; wherein after said message is read from said storing means, said response hold state ends and said sending means sends said message. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A position search method for searching a position of a radio apparatus, said method comprises:
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receiving a radio signal; judging whether said radio apparatus can determine its position; checking whether said radio signal includes a search request requesting the position of said radio apparatus; sending a message to a sender of said radio signal in response to said search request if said radio apparatus cannot determine its position; wherein said message comprises the position of a base station located nearest to said radio apparatus; wherein said position search method further comprises storing said message; setting a response hold state if it is judged that said radio apparatus cannot determine its position; checking the identification information of the sender of said radio signal after said response hold state is set; and reading the stored message after said response hold state is set; ending said response hold state after said stored message is read and sending said message. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification