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Indoor call control apparatus associated with public mobile network

A call control device and call control technology, which are applied in the directions of selection devices, wireless network protocols, electrical components, etc., can solve the problem of not being able to replace the P-CSCFSIP message, etc.

Inactive Publication Date: 2008-09-17
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] First, the wireless base station control device or PBX cannot replace the P-CSCF to send and receive SIP messages with the terminal

Method used

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  • Indoor call control apparatus associated with public mobile network
  • Indoor call control apparatus associated with public mobile network
  • Indoor call control apparatus associated with public mobile network

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0026] In this embodiment, a case where the present invention is applied to a 3GPP2 standard network is taken as an example for description.

[0027] FIG. 1 shows a mobile phone system to which the present invention is applied. Terminal a (101a), terminal b (101b), and terminal c (101c) are public wireless terminals capable of performing VoIP communication with the cdma20001x EV-DO protocol. AP 102a is a wireless base station that performs wireless communication with terminal a (101a). Terminal b (101b) and terminal c (101c) cannot communicate with AP102a because they are outside the wireless range of AP102a. Terminal b (101b) and terminal c (101c) can also communicate with AP 102a similarly to terminal a (101a) as long as they move within the wireless range of AP 102a.

[0028] PCF (Packet Control Function) 103 is a device for buffering terminal a (101a) destination packets from PDSN (Packet Data Serving Node) 105a according to the wireless communication state between termi...

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PUM

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Abstract

A public mobile terminal can use both of a public mobile communication service and an extension service while protecting an SIP message by an IP sec. An indoor call control apparatus that receives an INVITE message from the public mobile terminal has a destination determination table that determines whether the called terminal is an indoor terminal, or not. When the terminal is the indoor terminal, a Route header is deleted from the INVITE message, and the message is transmitted to the called terminal. When the called terminal is not the indoor terminal, the INVITE message is transmitted to an S-CSCF of a calling terminal on the basis of the contents of the Route header.

Description

technical field [0001] The present invention relates to an indoor call control device, capable of making indoor internal line outgoing calls, indoor internal line incoming calls, outgoing calls to public mobile networks, and incoming calls from public mobile networks located in indoor areas. Background technique [0002] Patent Document 1 describes an indoor system that provides indoor extension service, outgoing call service to a public mobile network, and incoming call service from a public mobile network to public mobile terminals in an indoor area. In this indoor system, the wireless protocol used for extension services and the wireless protocol used for public mobile communication are shared. Thus, the public mobile terminal can utilize both the extension service and the public mobile communication service without supporting other wireless protocols. When the terminal transmits the call connection request message to the radio base station, the call connection request m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/30H04W72/00
CPCH04L65/1046H04W80/10
Inventor 松本谦尚中村仁美三村和酒井隆史
Owner HITACHI LTD