Wide area radio paging system
First Claim
1. A paging system for providing page messages to radio receiving paging units over a wide area through a plurality of page message transmission systems in which each of said transmission systems is associated with a predefined coverage area in said wide area, said system comprising:
- a system controller having memory storing a routing database registering each of said paging units with one of said transmission systems, in which said controller routes page messages received by said system to each of said paging units through one of said transmission systems to which the paging unit is registered in accordance with said routing database, wherein the transmission system to which each of the paging units is registered represents the transmission system registered to the paging unit;
a plurality of transmission systems, each of said transmission systems being operative for sending page messages received from the system controller to paging units and for sending periodically a system message having at least information which identifies the transmission system to distinguish the transmission system from other transmission systems in the paging system;
a plurality of paging units for receiving the system messages of at least one of the transmission systems when located in the associated coverage area of said one transmission system and receiving the page messages from the transmission system registered to the paging unit when the paging unit is located in the coverage area of the transmission system registered to the paging unit, in which one or more of said plurality of paging units are one-way paging units;
each of said paging units including a memory storing information representing the current registered transmission system of the paging unit and a respective paging unit controller for determining when the paging unit receives at least one of the system messages sent by one of said transmission systems different from the current transmission system registered to the paging unit;
sending means for sending to the system controller at least information identifying the transmission system from said received system message sent by one of said transmission systems different from the current transmission system registered to the paging unit; and
said system controller having updating means, responsive to said sending means, for updating the registration of the paging unit in the routing database to one of the transmission systems different from the current transmission system and sending to the paging unit via one of said transmission systems at least information representing the updated transmission system registered to the paging unit.
3 Assignments
0 Petitions
Accused Products
Abstract
A system for delivering page messages to paging units over a wide area is provided through multiple transmission systems. The system has a controller for routing page messages to each paging unit through the transmission system to which the paging unit is registered. Each transmission system periodically sends a system message having at least a unique identifier for the transmission system. Each paging unit receives system messages of at least one of the transmission systems when located in the transmission system'"'"'s coverage area, and receives page messages from the transmission system registered to the paging unit when located in that transmission system'"'"'s coverage area. Paging units update their registration with the controller in accordance with the identifier of received system messages different from their current registered identifier via user enabled or automatic means. The controller may resend messages to paging units which were sent during periods of unlikely reception.
28 Citations
71 Claims
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1. A paging system for providing page messages to radio receiving paging units over a wide area through a plurality of page message transmission systems in which each of said transmission systems is associated with a predefined coverage area in said wide area, said system comprising:
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a system controller having memory storing a routing database registering each of said paging units with one of said transmission systems, in which said controller routes page messages received by said system to each of said paging units through one of said transmission systems to which the paging unit is registered in accordance with said routing database, wherein the transmission system to which each of the paging units is registered represents the transmission system registered to the paging unit; a plurality of transmission systems, each of said transmission systems being operative for sending page messages received from the system controller to paging units and for sending periodically a system message having at least information which identifies the transmission system to distinguish the transmission system from other transmission systems in the paging system; a plurality of paging units for receiving the system messages of at least one of the transmission systems when located in the associated coverage area of said one transmission system and receiving the page messages from the transmission system registered to the paging unit when the paging unit is located in the coverage area of the transmission system registered to the paging unit, in which one or more of said plurality of paging units are one-way paging units; each of said paging units including a memory storing information representing the current registered transmission system of the paging unit and a respective paging unit controller for determining when the paging unit receives at least one of the system messages sent by one of said transmission systems different from the current transmission system registered to the paging unit; sending means for sending to the system controller at least information identifying the transmission system from said received system message sent by one of said transmission systems different from the current transmission system registered to the paging unit; and said system controller having updating means, responsive to said sending means, for updating the registration of the paging unit in the routing database to one of the transmission systems different from the current transmission system and sending to the paging unit via one of said transmission systems at least information representing the updated transmission system registered to the paging unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A paging system for providing page messages to radio paging receiving units over a wide area through a plurality of regional transmission systems, said system comprising:
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means for routing page messages to each of said paging units through one of said transmission systems to which the paging unit is registered, each of said paging units being registered to one of said transmission systems; means for maintaining in a database copies of each of the page messages routed to one or more of said paging units with a time associated with a page message; a plurality of regional transmission systems having coverage areas in said wide area in which each of said transmission systems sends page messages received from the routing means to paging units located in their associated coverage area and sends a periodic system message having information which uniquely identifies the transmission system to paging units located in their associated coverage area; a plurality of paging units capable of receiving page messages and system messages when located in the coverage area of at least one of the transmission systems, in which each of said paging units, when receiving at least one of the system messages sent from one of said transmission systems different from the transmission system to which said paging unit is registered, transmits to the routing means at least the information from the received system message identifying the transmission system, a memory and a paging unit controller in at least one of the paging units for determining a time period or periods in which system messages were not received after a predefined interval from the transmission system to which the paging unit is registered; said routing means in response to each of said paging units comprises means for re-registering the paging unit to one of the transmission systems whose coverage area the paging unit has entered in accordance with the information transmitted from the paging unit; and means for resending from the database copies of any page messages sent to a paging unit which were routed during any of said time period or periods and which may not have been received by the paging unit during said time period or periods. - View Dependent Claims (53, 54)
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55. A method for providing page messages to radio receiving paging units over a wide area through a plurality of regional transmission systems comprising the steps of:
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registering each of said paging units to one of said transmission systems, in which one or more of said paging units comprise one-way paging units, a memory of each paging unit storing information representing the one of said transmission systems to which the paging unit is registered; routing page messages to each of said paging units through one of said transmission systems to which the paging unit is registered; sending routed page messages by each of the transmission systems to the paging units located in coverage areas associated with said transmission systems; sending a periodic system message from each of said transmission systems having information which identifies the transmission system to one or more of said paging units located in the coverage area of the transmission system; receiving at each of the paging units page messages sent from the transmission system registered to the paging unit when located in the coverage area of the transmission system registered to the paging unit; receiving at least one system message at each of the paging units when the paging unit is located in the coverage area of at least one of the transmission systems; re-registering one of the paging units to a different one of said transmission systems from the transmission system the paging unit is registered when the paging unit receives at least one of the system messages sent from one of said transmission systems different from the transmission system to which said paging unit is registered and wherein at least one of the system messages includes an identifier that identifies a transmission system different from the transmission system the paging unit is registered to in accordance with a comparison with the information stored in the memory of the paging unit; and sending to said paging unit, subsequent to said at least one of the system messages, a message having information representing the transmission system to which the paging unit is re-registered and storing this information in the memory to provide an updated registration of the paging unit. - View Dependent Claims (56, 57)
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58. A method for routing page messages to radio receiving paging units through one or more transmission systems comprising the steps of:
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receiving page messages, each of said page messages having message data and identifying information of one or more of the paging units to receive the page message; storing in at least one first database information associating each paging unit to one of the transmission systems; routing each page message received to one of the transmission systems in accordance with said identifying information of the page message and the information of said first database for sending of the page message to a respective paging unit by a respective one of the transmission systems; storing in at least one second database information about each page message routed representing at least the paging unit associated with the page message in accordance with the identifying information of the page message, the message data of the page message, and the time the page message was routed; maintaining in at least one of the paging units one or more records of certain time periods related to possible nonreceipt of messages transmitted to said at least one of the paging units; and resending page messages to said at least one of the paging units from said second database any message previously sent to said at least one of the paging units having a time routed during said certain time periods. - View Dependent Claims (59)
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60. A one-way radio receiving paging unit for receiving messages from one or more transmission systems having coverage areas in which each radio paging unit is registered to one of the transmission systems for receiving paging messages from the transmission system, and each transmission system sends a periodic system message identifying the transmission system and a telephone access number for use in changing registration of a paging unit, the one-way radio paging unit comprising:
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a receiver for receiving the system messages of at least one of the transmission systems when the one-way paging unit is located in the coverage area of said one of said transmission systems, and receiving the page messages sent from the transmission system registered to the one-way paging unit when the one-way paging unit is located in the coverage area of the transmission system registered to the one-way paging unit; means, including a memory storing information related to the transmission system registered to the paging unit, for determining when the one-way paging unit receives at least one of the system messages sent by one of said transmission systems different from the transmission system registered to the one-way paging unit; and means, responsive to said determining means, for providing a signal including information corresponding to the telephone access number for use in changing registration of the one-way paging unit. - View Dependent Claims (61, 62)
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63. A method of providing page messages to radio receiving paging units over a wide area through a plurality of regional page message transmission systems comprising the steps of:
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registering each of said paging units to a respective one of said regional transmission systems in accordance with an identification code for the respective regional transmission system stored in a memory of the respective paging unit to provide each of the respective paging units with an identification code of a current registration of the regional transmission system to which it is currently registered; transmitting system messages from each of the regional transmission systems which include information identifying respectively the respective regional transmission system; determining for each paging unit if it has received, within a predetermined period of time, system messages from the respective regional transmission system to which it is currently registered identifying the regional transmission system; storing in memory within a paging unit information relative to a period or periods of nonreceipt of the system messages from the respective currently registered regional transmission system; communicating to a controller external to the paging unit information relative to a period or periods of nonreceipt of the system messages from the respective currently registered regional transmission system; and newly transmitting in accordance with the information relative to the period or periods of nonreceipt, page messages to the paging unit comprising page messages previously transmitted by the previously currently registered regional transmission system to the paging unit during the period of nonreceipt. - View Dependent Claims (64)
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65. A paging unit for use in a wide area transmission system having a plurality of regional transmission systems each providing periodic system messages, the wide area transmission system having a system controller and a storage system for storing page messages previously routed for transmission to paging units with associated time information, the paging unit comprising:
a paging unit controller within the paging unit operative to determine if there is receipt by the paging unit of periodic system messages transmitted by one of the regional transmission systems, and in response to a determination by the paging unit controller that there is nonreceipt of the periodic system messages for a predetermined time period or periods during which the paging unit is operative to receive the periodic system messages, the paging unit controller is operative to provide a signal to identify the period or periods of nonreceipt of system messages. - View Dependent Claims (66)
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67. A controller for routing messages to radio receiving paging units in a wide area paging system having plural transmission systems with coverage areas in the wide area, in which the radio paging units can detect when they have moved into a new coverage area of one of the transmission systems, said controller comprising:
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memory storing a routing database registering each of said paging units with one of said transmission systems; means for routing page messages to each of said paging units through one of said transmission systems to which the paging unit is registered in accordance with said routing database, in which one or more of said plurality of paging units represent one-way paging units; and means for updating the registration of the paging unit in the routing database to one of the transmission systems and sending for transmission to the paging unit information representing the updated transmission system registered to the paging unit and sending to said updated transmission system for transmission to said paging unit page messages previously transmitted to the paging unit by the paging unit'"'"'s previously registered transmission system.
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68. A method of providing page messages to a radio receiving paging unit over a wide area through a plurality of regional page message transmission systems forming part of a page message delivery communication system, the method comprising the steps of:
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providing a registration of the paging unit to a respective first of said regional transmission systems in accordance with a regional identifier code for the first regional transmission system, said code being stored in a memory of the paging unit; periodically transmitting system messages from each of the regional transmission systems which includes information identifying respectively the respective regional transmission system; determining if the paging unit is receiving a system message from a regional transmission system that the paging unit is not registered to; providing a request to change the registration of the paging unit and identifying a second regional transmission system from which it is has received a system message and which is different from said first regional transmission system which the paging unit is currently registered to; providing an updated registration for the paging unit and providing an updated registration code stored in the memory of the paging unit, the updated registration code including a regional identifier code identifying a third regional transmission system that is different than the regional identifier code identifying said first registered transmission system and different than a regional identifier code associated with said second regional transmission system; routing page messages intended for transmission to the paging unit from the third regional transmission system in order to balance the page message delivery load of the page delivery communication system.
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69. A method of providing page messages to radio receiving paging units over a wide area through a plurality of regional page message transmission systems forming part of a page message delivery communication system, the method comprising the steps of:
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registering each of said paging units to a respective one of said regional transmission systems in accordance with an identification code for the respective regional transmission system stored in a memory of the respective paging unit to provide each of the respective paging units with an identification code of a current registration of the regional transmission system to which it is currently registered, wherein the registration code of a paging unit includes information relative to identification of a first regional transmission system and a first frequency of transmission of messages; periodically transmitting system messages from each of the regional transmission systems which includes information identifying the respective regional transmission system and a frequency of transmission of messages; determining for a paging unit that it is receiving a system message from a second regional transmission system that it is not registered to, said system message being received by the paging unit at the first frequency; providing a request to change registration of the paging unit in accordance with a determination from said determining step; modifying the registration code of the paging unit to establish an updated registration for receipt of page messages with an updated registration code, the updated registration code including information relative to identification of the second regional transmission system and the second frequency of transmission of messages; and routing page messages intended for transmission to the paging unit from the second regional transmission system at the second frequency in order to balance the page message delivery load of the second regional transmission system.
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70. A method of providing page messages to a radio receiving paging unit comprising the steps of:
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transmitting system messages and page messages from a transmission system, the system messages including information identifying the transmission system; storing in memory within the paging unit information relative to a period of nonreceipt of system messages from the transmission system; communicating to a controller external to the paging unit information relative to a period of nonreceipt of the system messages from the transmission system; and newly transmitting to the paging unit from a transmission system, in accordance with the information relative to the period of nonreceipt, page messages previously transmitted to the paging unit during the period of nonreceipt but not received by the paging unit during said period.
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71. A method of operation of a paging unit for use in a wide area transmission system having a plurality of regional transmission systems each providing periodic system messages, the wide area transmission system having a system controller and a storage system for storing page messages previously routed for transmission to paging units with associated time information, the method comprising:
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operating a paging unit controller within the paging unit to determine if there is receipt by the paging unit of periodic system messages transmitted by one of the regional transmission systems; and in response to a determination by the paging unit controller that there is nonreceipt of the periodic system messages for a predetermined time period or periods, providing a signal by the paging unit to identify the period or periods of nonreceipt of system messages.
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Specification