EP0756433A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Mobile communication system and communication network
Assignee: NTT Docomo Inc
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Filing: 1996-02-06
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Granted: —
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Expires: 2016-02-06
Abstract
Abstract A mobile communication system in which each of communication networks is provided with one location register (home location register or gateway location register) and one or more service area registers. The service area registers are provided in the service areas respectively and store the communication terminal information of communication terminals existing in the service areas. The location register stores the numbers of the service area registers of the service areas in which communication terminals exist and the communication terminal information of the communication terminals. When a communication terminal moves from one communication network into another, the communication terminal information is transmitted from the location register of the one communication network to the location register of the another communication network. When a communication terminal moves from one service area into another service area in the same network, the communication terminal information is given to the service area register from the location register. When a communication terminal moves into a service area, the communication terminal information is transmitted from the service area register to the communication terminal. Therefore, the traffic of common control lines between and in communication networks can be reduced.
Inventors
- 👤 So Ishida
- 👤 Hiroshi Nakamura
- 👤 Yasuyuki Uchiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 19:07
CPC Classifications
H; H04; H04W; H04W8/00; H04W8/02; H04W8/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
160 words
A mobile communications system including a plurality of communications networks, and a communication terminal which moves in and between one or more visiting areas in said communications networks, and carries out a location registration in a current visiting area, said mobile communications system characterized by comprising: a location register located in each of said communications networks for storing information about said communication terminal and a visiting area in which said communication terminal is present, when said communication terminal enters the communications network in which said location register is located from another communications network, and carries out said location registration; and a visitor register located in each of said visiting area for receiving information about said communication terminal sent from said location register in said communications network, and for storing said information about said communication terminal, when said communication terminal moves to the visiting area in which said visitor register is located from another visiting area in the same communications network.
Claim 2
Dependent Claim
43 words
The mobile communications system as claimed in claim 1, characterized in that said location register is a home location register located in a home communications network, in which said communication terminal is registered in advance, for storing said information about said communication terminal.
Claim 3
Dependent Claim
65 words
The mobile communications system as claimed in claim 2, characterized in that said location register is a gate location register located in a visitor communications network different from said home communications network, for receiving said information about said communication terminal from said home location register and for storing said information, when said communication terminal moves from said home communications network to said visitor communications network.
Claim 4
Dependent Claim
84 words
The mobile communications system as claimed in claim 1, characterized in that said visitor register further comprises: a first timer means for counting a time period after having been reset when a call connection occurs to said communication terminal; and means for registering in said location register a number of said visitor register of said visiting area in which said communication terminal is present, when said communication terminal carries out a location registration after said first timer has counted a predetermined first time period.
Claim 5
Dependent Claim
68 words
The mobile communications system as claimed in claim 4, characterized in that said visitor register further comprises: a second timer means for counting a time period after having been reset when communications occurs between said communication terminal and said visitor register; and means for deregistering said information about said communication terminal stored in said visitor register, when said second timer means has counted a predetermined second time period.
Claim 6
Dependent Claim
84 words
The mobile communications system as claimed in claim 3, characterized in that said visitor register further comprises: a first timer means for counting a time period after having been reset when a call connection occurs to said communication terminal; and means for registering in said location register a number of said visitor register of said visiting area in which said communication terminal is present, when said communication terminal carries out a location registration after said first timer has counted a predetermined first time period.
Claim 7
Dependent Claim
68 words
The mobile communications system as claimed in claim 6, characterized in that said visitor register further comprises: a second timer means for counting a time period after having been reset when communications occurs between said communication terminal and said visitor register; and means for deregistering said information about said communication terminal stored in said visitor register, when said second timer means has counted a predetermined second time period.
Claim 8
Dependent Claim
108 words
A mobile communications network including one or more visiting areas, wherein a communication terminal moves in and between said visiting areas, and carries out a location registration in a current visiting area, said mobile communications network characterized by comprising: a location register for storing information about said communication terminal and a visiting area in which said communication terminal is present, when said communication terminal carries out said location registration; and a visitor register located in each of said visiting areas for receiving said information about said communication terminal sent from said location register and for storing said information, when said communication terminal moves in from another visiting area.
Claim 9
Dependent Claim
48 words
The mobile communications network as claimed in claim 8, characterized in that said mobile communications network is a home communications network in which said communication terminal is registered in advance, and said location register is a home location register for continually storing said information about said communication terminal.
Claim 10
Dependent Claim
82 words
The mobile communications network as claimed in claim 8, characterized in that said mobile communications network is a visitor communications network different from a home communications network in which said communication terminal is registered in advance, and said location register is a gate location register for receiving said information about said communication terminal from the location register of said home communications network and for storing said information, when said communication terminal moves from said home communications network to said visitor communications network.
Claim 11
Dependent Claim
84 words
The mobile communications network as claimed in claim 8, characterized in that said visitor register further comprises: a first timer means for counting a time period after having been reset when a call connection occurs to said communication terminal; and means for registering in said location register a number of said visitor register of said visiting area in which said communication terminal is present, when said communication terminal carries out a location registration after said first timer has counted a predetermined first time period.
Claim 12
Dependent Claim
68 words
The mobile communications network as claimed in claim 11, characterized in that said visitor register further comprises: a second timer means for counting a time period after having been reset when communications occurs between said communication terminal and said visitor register; and means for deregistering said information about said communication terminal stored in said visitor register, when said second timer means has counted a predetermined second time period.
Claim 13
Dependent Claim
84 words
The mobile communications network as claimed in claim 10, characterized in that said visitor register further comprises: a first timer means for counting a time period after having been reset when a call connection occurs to said communication terminal; and means for registering in said location register a number of said visitor register of said visiting area in which said communication terminal is present, when said communication terminal carries out a location registration after said first timer has counted a predetermined first time period.
Claim 14
Dependent Claim
68 words
The mobile communications network as claimed in claim 13, characterized in that said visitor register further comprises: a second timer means for counting a time period after having been reset when communications occurs between said communication terminal and said visitor register; and means for deregistering said information about said communication terminal stored in said visitor register, when said second timer means has counted a predetermined second time period.
References Cited (Backward Citations)
No citation records indexed.
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