Method of location registration, location registration system, mobile communication terminal equipment for setting up location registration area, and program for setting up location registration area
First Claim
1. A location registration method for determining a location registration area for a mobile communication terminal, comprising the step of determining the location registration area according to network information about nodes and cells in a communication network.
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Accused Products
Abstract
One piece of information used in setting up the optimum location registration area is an area of a peripheral cell. However, in the current system, the area of a cell is set up by the predicted number of subscribers in the area, and therefore, depends on the location. For example, the areas of cells are different between a downtown and a suburban area. Therefore, when a mobile communication terminal computes the optimum location registration area, it is necessary to obtain the size information about the peripheral cell, which can cause the problem of traffic.
The mobile communication terminal in a cell signals a plurality of paging point nodes of mobility and traffic characteristic. Then, the plurality of paging point nodes sets up a location registration area of the mobile communication terminal according to the above mentioned information and network information (number of hops, number of base stations, number of cells, area of cell, number of nodes). Thus, the location management of the mobile communication terminal can be efficiently realized, thereby reducing the traffic.
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Citations
27 Claims
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1. A location registration method for determining a location registration area for a mobile communication terminal, comprising the step of
determining the location registration area according to network information about nodes and cells in a communication network.
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9. A location registration system for determining a location registration area of a mobile communication terminal, wherein:
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the mobile communication terminal comprises means for measuring mobility characteristics and a frequency of call arrival, and signaling to a mobile communication network the measured values together with a location registration request; and
a node in the mobile communication network comprises means for managing network information about nodes and cells in the communication network, and determines a location registration area of the mobile communication terminal according to the mobility characteristics, the frequency of call arrival, and the network information. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A mobile communication terminal in a location registration system for determining a location registration area of a mobile communication terminal, comprising
means for measuring mobility characteristics and a frequency of call arrival, and signaling to a mobile communication network the measured values together with a location registration request.
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17. A location area setting equipment in a location registration system for determining a location registration area of a mobile communication terminal, comprising
means for managing network information about nodes and cells in a communication network, wherein the location registration area of the mobile communication terminal is determined according to mobility characteristics, a frequency of call arrival transmitted from the mobile communication terminal, and the network information.
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24. A location area setting program for determining a location registration area minimizing this total number of signals by computing a total number of signals used in the location registration and paging for a mobile communication terminal, comprising in computing the total number of signals, comprising:
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multiplying the number of hops by the number of cells, and by the frequency of call arrival on the mobile communication terminal;
multiplying the number of hops by the frequency of call arrival on the mobile communication terminal;
multiplying the number of hops between the base station and the location management node managing the location of the mobile communication terminal by the frequency of changing location registration areas of the mobile communication terminal; and
adding up the multiplication results. - View Dependent Claims (26, 27)
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25. A location area setting program for determining a location registration area minimizing this computed total number of signals by computing a total number of signals used in the location registration and paging for a mobile communication terminal, comprising in computing the total number of signals, comprising:
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adding up the number of cells in a range, the number of nodes other than base stations in the range, and a value of −
1;
multiplying the addition result by a frequency of call arrival on the mobile communication terminal;
multiplying the number of hops between the base stations and the node which performs a paging operation by the frequency of call arrival on the mobile communication terminal;
multiplying the number of hops between the base station and the location management node by a frequency of changing location registration areas of the mobile communication terminal; and
adding up the multiplication results.
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Specification