Terminal usage limiting apparatus
First Claim
1. A terminal usage limiting apparatus for temporary use with a mobile terminal communication, comprising:
- a signal transmitter for transmitting a signal in a predetermined size of an area defining a restricted area where the use of the mobile terminal is restricted, the signal having a characteristic that is substantially indistinguishable from a predetermined characteristics of a base station;
a message generator connected to said signal transmitter for generating said signal which includes information identifying the terminal usage limiting apparatus;
an access channel demodulator for demodulating a signal that is received from the mobile terminal;
a message analyzer connected to said access channel demodulator for analyzing the demodulated signal;
a restricted phone number memory for storing a predetermined list of phone numbers that are allowed to call in the restricted area;
an emergency call deciding device connected to said message analyzer and said restricted phone number memory for determining whether or not a requested phone number is an emergency call by comparing the requested phone number to the predetermined list in response to a call origination message from said message analyzer; and
a hand-off directing device connected to said emergency call deciding device and said message generator for directing said message generator to generate an emergency call hand-off message to force the mobile terminal to switch from the terminal usage limiting apparatus to an available base station in response to the emergency call, the emergency call hand-off message including base station ID information on the available base station.
4 Assignments
0 Petitions
Accused Products
Abstract
A terminal usage limiting apparatus for limiting the use of a portable telephone in a specific predetermined area. The terminal usage limiting apparatus 105 is installed to provide service to mobile terminals 101 in a usage limiting area 108. The terminal usage limiting apparatus 105 outputs control signals as a base station and additional usage limit messages. The terminal usage limiting apparatus 105 enables a mobile terminal 101 in the usage limiting area 108 to recognize the apparatus 105 as a base station so that the mobile terminal is switched from the base station to the apparatus 105. As a result, the mobile terminal 101 receives a usage limit message from the apparatus 105. Thus, the mobile terminal 101 enters into a predetermined operation limit mode where call originations are restricted. In addition, in this mode, the mobile terminal 101 receives control messages from the terminal usage limiting apparatus, and the control message includes a long code mask corresponding to the apparatus 105. Because of the unique long code mask, the mobile terminal 101 is also limited in receiving calls from the base stations 102 and 103 via the paging channel.
118 Citations
27 Claims
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1. A terminal usage limiting apparatus for temporary use with a mobile terminal communication, comprising:
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a signal transmitter for transmitting a signal in a predetermined size of an area defining a restricted area where the use of the mobile terminal is restricted, the signal having a characteristic that is substantially indistinguishable from a predetermined characteristics of a base station;
a message generator connected to said signal transmitter for generating said signal which includes information identifying the terminal usage limiting apparatus;
an access channel demodulator for demodulating a signal that is received from the mobile terminal;
a message analyzer connected to said access channel demodulator for analyzing the demodulated signal;
a restricted phone number memory for storing a predetermined list of phone numbers that are allowed to call in the restricted area;
an emergency call deciding device connected to said message analyzer and said restricted phone number memory for determining whether or not a requested phone number is an emergency call by comparing the requested phone number to the predetermined list in response to a call origination message from said message analyzer; and
a hand-off directing device connected to said emergency call deciding device and said message generator for directing said message generator to generate an emergency call hand-off message to force the mobile terminal to switch from the terminal usage limiting apparatus to an available base station in response to the emergency call, the emergency call hand-off message including base station ID information on the available base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A mobile terminal for use in a restricted use area with a terminal usage limiting apparatus, comprising:
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a receiver for receiving a signal for wireless communication;
a restricted phone number memory unit for storing a list of predetermined emergency numbers;
an emergency deciding device connected to said restricted phone number memory unit for determining whether or not a requested phone number is an emergency by comparing the requested phone number to the predetermined emergency numbers;
a message generator connected to said emergency deciding device for generating an emergency signal indicative of emergency in response to said emergency deciding device; and
a transmitter connected to said message generator for transmitting the emergency signal to the terminal usage limiting apparatus, in response to the emergency signal, said receiver receiving information for forcing the mobile terminal to be switched from the terminal usage limiting apparatus to an available base station. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of restricting the use of a mobile terminal in a predetermined area, comprising:
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determining a unique station information on a terminal usage limiting apparatus for identifying a transmission source;
storing a predetermined set of emergency calls;
periodically transmitting to the mobile terminal a signal including the unique station information in a predetermined area;
receiving a signal from the mobile terminal;
determining whether or not the received signal is a call origination request to one of the predetermined set of the emergency calls;
forcing the mobile terminal to switch from the terminal usage limiting apparatus to an available base station via a hand-off message in response to said determining step; and
allowing the mobile terminal to retransmit the call origination request directly to the base station. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification