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Mobile communication method, call control node, priority control node, and mobile management node

A technology for calling control nodes and mobile management nodes, applied in the field of mobile communication

Active Publication Date: 2012-10-03
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned mobile communication system, there is the following problem: Even if the IMS receives a call connection request signal for a priority call (hereinafter, priority call) sent to the mobile terminal UE for important communication, etc., it cannot In order to establish the IMS call control signal bearer for forwarding the call connection request signal of the priority call, the call (paging) of the mobile terminal UE related to the priority call is performed prior to the mobile terminal UE related to the normal call

Method used

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  • Mobile communication method, call control node, priority control node, and mobile management node
  • Mobile communication method, call control node, priority control node, and mobile management node
  • Mobile communication method, call control node, priority control node, and mobile management node

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no. 1 Embodiment approach

[0059]

[0060] Image 6 It is a figure showing the structure of a mobile communication system. The mobile communication system consists of an IMS that provides IP-based multimedia communication services such as VoIP, an EPC network that transmits IP packets, a mobile terminal UE, and a wireless base station eNodeB that performs LTE wireless communication with the mobile terminal UE and connects the mobile terminal UE to the EPC network. constitute.

[0061] In addition, the present invention can also be applied to the case where the mobile terminal UE is connected to the EPC network through UMTS / GPRS wireless communication. In this case, the mobile terminal UE performs UMTS / GPRS radio communication with the radio base station NodeB / BTS (not shown), and connects to the EPC via the radio control device RNC / BSC and the switching center SGSN (not shown). The gateway device S-GW of the network.

[0062] Such as Image 6 As shown, a call control node S-CSCF, a call control no...

no. 2 Embodiment approach

[0119] Next, the mobile communication system of the second embodiment will be described focusing on differences from the first embodiment. In the second embodiment, a case where PMIPv6 is used instead of GTP as a signaling protocol between the gateway device P-GW and the gateway device S-GW will be described.

[0120]

[0121] (2-1) Actions when priority calls come in

[0122] refer to Figure 14~15 The operation when the priority call is received in the mobile communication system according to the second embodiment will be described. Figure 14 , 15 It is a conceptual diagram and a sequence diagram showing operations when a priority call is received in the mobile communication system according to the second embodiment. Additionally, set Figure 14 as well as Figure 15 The same reference numerals denote the same steps. in addition, Figure 14 ,15 The actions of steps S301 to S304 are the same as Figure 8 , 9 The actions of steps S101 to S104 are the same.

[0123...

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Abstract

Provided is a mobile communication method comprising a step of judging, in the case where a priority control node (PCRF) is notified of the fact that an invite signal including priority call information has received from a call control node (P-CSCF), whether it is necessary to change ARP of a call control signal bearer for transmitting the Invite signal to a mobile terminal (UE) from a gateway device (P-GW) into ARP which is higher than priority that is preset for the call control signal bearer, a step of changing, in the case where it has been judged that the ARP is necessary to be changed, the ARP of the call control signal bearer into the ARP which is higher than the ARP that is preset for the call control signal bearer, and a step of performing paging with respect to the mobile terminal (UE) in accordance with the priority of the call control signal bearer.

Description

technical field [0001] The present invention relates to a mobile communication method, a call control node, a priority control node, and a mobility management node for performing call control between mobile terminals. Background technique [0002] Non-Patent Document 1 specifies a mobile communication system using an IMS (IP Multimedia Subsystem). In this mobile communication system, when the IMS receives a call connection request signal (for example, an INVITE signal of SIP, etc.) sent to the mobile terminal UE, it communicates with the mobile terminal UE on a packet network (for example, an evolved packet core (Evolved The IMS call control signal set in Packet Core) is used to carry the received call connection request signal to the mobile terminal UE. [0003] prior art literature [0004] non-technical literature [0005] Non-technical document 1: 3GPP TS23.228 Contents of the invention [0006] The problem to be solved by the invention [0007] However, in the ab...

Claims

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Application Information

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IPC IPC(8): H04W76/02H04W28/24
CPCH04L65/105H04L65/1006H04L29/06285H04L29/06197H04W76/007H04W76/50H04L65/1045H04L65/1104H04W28/24H04W68/02
Inventor 西田克利铃木启介
Owner NTT DOCOMO INC
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