Mobile communications system and communications control method and mobile terminal device used therefor, control method thereof, and recording medium
First Claim
1. A mobile communications system which comprises a mobile terminal device and a switching center having a circuit switched domain and packet switched domain and carrying out location management of said mobile terminal device and establishes a radio connection (hereinafter referred to as an RRC (Radio Resource Control) connection) for communications with said mobile terminal device in response to an attach process or location registration process on said mobile terminal device, wherein messages are transmitted and received between said mobile terminal device and each of said circuit switched domain and said packet switched domain through said RRC connection for said attach process or said location registration process.
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0 Petitions
Accused Products
Abstract
To reduce a time required for an attach process or a location registration process and to alleviate traffic congestion in a W-CDMA mobile communications system. When an attach process or location registration process takes place on a UE with respect to both a circuit switched domain and a packet switched domain, messages about the attach process or the location registration process are transmitted from the UE to the circuit switched domain and the packet switched domain through an RRC (Radio Resource Control) connection established between the UE and a radio access network device (i.e., a RAN). This makes it possible to update location information for mobility management in both circuit switched domain and packet switched domain through the RRC connection.
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Citations
49 Claims
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1. A mobile communications system which comprises a mobile terminal device and a switching center having a circuit switched domain and packet switched domain and carrying out location management of said mobile terminal device and establishes a radio connection (hereinafter referred to as an RRC (Radio Resource Control) connection) for communications with said mobile terminal device in response to an attach process or location registration process on said mobile terminal device,
wherein messages are transmitted and received between said mobile terminal device and each of said circuit switched domain and said packet switched domain through said RRC connection for said attach process or said location registration process.
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13. A communications control method for a mobile communications system which comprises a mobile terminal device and a switching center having a circuit switched domain and packet switched domain and carrying out location management of said mobile terminal device and establishes a radio connection (hereinafter referred to as an RRC (Radio Resource Control) connection) for communications with said mobile terminal device in response to an attach process or location registration process on said mobile terminal device,
wherein said method comprises a message transmission/reception step of transmitting and receiving messages between said mobile terminal device and each of said circuit switched domain and said packet switched domain through said RRC connection for said attach process or said location registration process.
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25. A mobile terminal device in a mobile communications system which comprises the mobile terminal device and a switching center having a circuit switched domain and a packet switched domain and carrying out location management of said mobile terminal device and establishes a radio connection (hereinafter referred to as an RRC (Radio Resource Control) connection) for communications with the mobile terminal device in response to an attach process or location registration process on the mobile terminal device,
wherein the mobile terminal device transmits and receives messages through said RRC connection with said circuit switched domain and said packet switched domain for said attach process or said location registration process.
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34. A recording medium containing a program for making a computer control the operation of a mobile terminal device in a mobile communications system which comprises the mobile terminal device and a switching center having a circuit switched domain and a packet switched domain and carrying out location management of said mobile terminal device and establishes a radio connection (hereinafter referred to as an RRC (Radio Resource Control) connection) for communications with said mobile terminal device in response to an attach process or location registration process on said mobile terminal device,
wherein said program contains a message transmission/reception process of transmitting and receiving messages between said mobile terminal device and each of said circuit switched domain and said packet switched domain through said RRC connection for said attach process or said location registration process.
- 42. A control method for a mobile terminal device in a mobile communications system which comprises the mobile terminal device and a switching center having a circuit switched domain and a packet switched domain and carrying out location management of said mobile terminal device and establishes a radio connection (hereinafter referred to as an RRC (Radio Resource Control) connection) for communications with said mobile terminal device in response to an attach process or location registration process on said mobile terminal device, comprising a message transmission/reception step of transmitting and receiving messages between said mobile terminal device and each of said circuit switched domain and said packet switched domain through said RRC connection for said attach process or said location registration process.
Specification