Source: https://patents.google.com/patent/US20110222481A1/en
Timestamp: 2018-11-19 04:15:03
Document Index: 659216138

Matched Legal Cases: ['art 27', 'art 26', 'art 25', 'art 12', 'art 27', 'art 12', 'art 13', 'art 13', 'art 27', 'art 26', 'art 26', 'art 25', 'art 12', 'art 12', 'art 13', 'art 13', 'art 25', 'art 13', 'art 25', 'art 25', 'art 13', 'art 12', 'art 25', 'art 25', 'art 25', 'art 25', 'art 13', 'art 25', 'art 13', 'art 25', 'art 13', 'art 25', 'art 13', 'art 12', 'art 12']

US20110222481A1 - Communication system and communication control method - Google Patents
US20110222481A1
US20110222481A1 US13122274 US200913122274A US2011222481A1 US 20110222481 A1 US20110222481 A1 US 20110222481A1 US 13122274 US13122274 US 13122274 US 200913122274 A US200913122274 A US 200913122274A US 2011222481 A1 US2011222481 A1 US 2011222481A1
US13122274
US8634318B2 (en )
A communication system providing a multimedia service that informs a calling terminal that a communication sent from the calling terminal to a called terminal is undesired by the called terminal. Typically, the calling terminal is connected to a calling-side communication network, and the called terminal is connected to a called-side communication network; the called-side communication network includes an access request receiving device that receives an access request sent from the calling terminal; an access request cancel determination device that determines whether or not the received access request is cancelled; and an access request cancel notice sending device that sends an access request cancel notice when the access request is cancelled; and the calling-side communication network includes an addressee information communicating device that communicates addressee information to the calling terminal based on the access request cancel notice, where the addressee information is information of an addressee to be accessed so as to withdraw the cancellation of the access request.
Priority is claimed on Japanese Patent Applications No. 2008-259419, filed Oct. 6, 2008, and No. 2008-329148, filed Dec. 25, 2008, the contents of which are incorporated herein by reference.
Patent Document 1: Published Japanese Translation, No. 2007- 527633, of PCT International Publication, No. WO2004/071104
In order to achieve the above object, the present invention provides a communication system providing a multimedia service that informs a calling terminal that a communication sent from the calling terminal to a called terminal is undesired by the called terminal.
In the above communication system, it is possible that the calling terminal is connected to a calling-side communication network, and the called terminal is connected to a called-side communication network;
the called-side communication network includes an access request receiving device that receives an access request sent from the calling terminal; an access request cancel determination device that determines whether or not the received access request is cancelled; and an access request cancel notice sending device that sends an access request cancel notice when the access request is cancelled; and
the calling-side communication network includes an addressee information communicating device that communicates addressee information to the calling terminal based on the access request cancel notice, where the addressee information is information of an addressee to be accessed so as to withdraw the cancellation of the access request.
an access request receiving device in the called-side communication network receives an access request sent from the calling terminal;
an access request cancel determination device in the called-side communication network determines whether or not the received access request is cancelled;
an access request cancel notice sending device in the called-side communication network sends an access request cancel notice when the access request is cancelled; and
an addressee information communicating device in the calling-side communication network communicates addressee information to the calling terminal based on the access request cancel notice, where the addressee information is information of an addressee to be accessed so as to withdraw the cancellation of the access request.
FIG. 4 is a diagram showing an operation flow of some devices in the IMS network system.
(v) rejection of “1MS Registration”
It forcibly disconnects a specific subscriber when receiving a location registration cancel request signal (e.g., cancel location signal) from a node (e.g., HSS or HLR (home location register)) which manages subscribers.
Below the above function <1> (of feeding information back to the caller for a call whose reception has been restricted through PUCI) will be explained in detail.
FIG. 2 is a second block diagram showing the structure of the IMS network system.
This diagram shows the structure of the IMS network system, which is shown in FIG. 1 and has the above function <1>, in more detail.
Additionally, in the IMS network system, a called terminal 20 (corresponding to a T-UE), a RAN (radio access network) 30, an SGSN 29, a GGSN 23, a P-CFCS part 27, a S-CSCF part 26, and an I-CSCF (interrogating call session control function) part 25 are connected via a communication network, thereby forming a called-side communication network.
Instead of using server functions by devices such as RANs 14 and 30, SGSNs 15 and 29, and GGSNs 11 and 23 provided between the calling terminal 10 and P-CSCF part 12 and between the called terminal 20 and P-CSCF part 27, a communication network using a group of servers such as an E-UTRAN (evolved universal terrestrial radio access network), an MME (mobility management entity), a Serving-GW (gateway), and a PDN-GW (gateway) may be employed so as to form an IMS network system.
The calling access network system 200 includes RAN 14, SGSN 15, and GGSN 11, and the calling IMS basic system 100 includes P-CSCF part 12, S-CSCF part 13, and an application server connected to S-CSCF part 13.
Similarly, the called access network system 400 includes RAN 30, SGSN 29, and GGSN 23, and the called IMS basic system 300 includes P-CSCF part 27, S-CSCF part 26, an application server connected to S-CSCF part 26, and I-CSCF part 25.
Referring to FIG. 4, the operation flow of the devices in the IMS network system will be explained.
First, when the calling terminal 10 sends an INVITE request (see step S1), the request is received by P-CSCF part 12 via the calling access network system 200.
The P-CSCF part 12 transfers the INVITE request to S-CSCF part 13 (see step S2), which detects the SIP-URI of the calling terminal 10. The S-CSCF part 13 also detects the SIP-URI of I-CSCF part 25 (in the called-side communication network) as an addressee which has been stored in the application server (AS) or the like in association with the relevant SIP-URI. The S-CSCF part 13 sends the INVITE request to the IP-URI of I-CSCF part 25 (see step S3).
When I-CSCF part 25 (as an access request receiving device, an access request cancel determination device, and an access request cancel notice sending device), S-CSCF part 13, and P-CSCF part 12 each receive the INVITE request, they each return a Trying response to the device which sent the relevant INVITE request (see steps S4, S5, and S6).
When I-CSCF part 25 returns the Trying response via step S4, it performs a SPIT (spam over IP telephony) determination (see step S7).
In the SPIT determination, the combination of SIP-URIs of the calling terminal 10 and the called terminal 20 stored in the INVITE request may be retrieved, and the determination is performed based on the above combination and information stored in an application server (AS), a memory, or the like.
More specifically, SPIT may be determined when the application server (AS) stores information (in association with the SIP-URI combination) which indicates whether the relevant access is approved or disapproved, and the information indicates that the access is disapproved (such disapproval information is stored by any method). In another example, SPIT may be determined when mechanically repeated sending (e.g., for every 5 minutes) of INVITE request for the detected SIP-URI combination is observed in a table of past INVITE requests.
If I-CSCF part 25 determines (in the SPIT determination) that the relevant INVITE request is a signal which indicates SPIT, I-CSCF part 25 registers information for identifying the calling terminal 10 (e.g., SIP-URI of the calling terminal 10) which sent the INVITE request in an application server or the like, as information which indicates that the relevant calling terminal is an improper calling terminal which performed SPIT operation and a target for cancelling future INVITE requests (as access requests).
In addition, I-CSCF part 25 sends an error response (as an access request cancel notice) to S-CSCF part 13 (see step S8).
Additionally, information such as start time or duration for the restriction may also be included (in the error response) as error information.
Although I-CSCF part 25 performs the SPIT determination in the present embodiment, an S-CSCF part or an application server connected to the S-CSCF part may instead perform the SPIT determination.
When S-CSCF part 13 receives the error response sent from I-CSCF part 25, it checks propriety of the error response (see step S9).
In the above propriety checking, S-CSCF part 13 may determine (i) whether the application server (AS) connected to itself has stored (a) information for node identification, such as an IP address or host name of I-CSCF part 25 indicated (in the error response) as the sender of the error response, or (b) SIP-URI for an error session, or (ii) whether the structure or content of the corresponding SIP header has consistency.
When the propriety of the error response can be confirmed, S-CSCF part 13 (as an addressee information communicating device) transfers the error response to P-CSCF part 12 (see step S10), and the P-CSCF part 12 further transfers the error response to the calling terminal 10 (see step S11).
When receiving the error response, the calling terminal 10 displays the information (about an addressee to be accessed (i.e., addressee information), details of the error, etc.) stored in the error response, on a display part or the like (see step S12).
The calling terminal 10 also sends an access request signal to the addressee indicated by the addressee information in response to a user's operation, or automatically (see step S13).
In accordance with the above-described procedure, since a message which clearly indicates a disconnection by means of the operation of PUCI, and an addressee (telephone number or URL for the release request) to be accessed so as to release the registration as a bad caller are both communicated to the caller, it is possible to assist acquisition of information for recognizing a fact that the caller itself has been registered as a bad caller and for releasing such registration.
Additionally, the present operator (communication carrier) can know information of a subscriber who belongs to the present operator and has been registered as a bad caller by another operator. Therefore, a further restriction may be imposed on a subscriber who has troubled another operator. Accordingly, it is possible to prevent a case in which not only is a spam call issued, but also the relevant network is affected by means of virus infection or the like.
1. A communication system providing a multimedia service that informs a calling terminal that a communication sent from the calling terminal to a called terminal is undesired by the called terminal.
3. The communication system in accordance with claim 1, wherein the communication includes SPIT, that is, spam over IP telephony.
4. The communication system in accordance with claim 1, wherein the calling terminal is further informed that reception of the communication has been restricted.
the calling terminal is connected to a calling-side communication network, and the called terminal is connected to a called-side communication network;
the called-side communication network includes:
an access request receiving device that receives an access request sent from the calling terminal;
an access request cancel determination device that determines whether or not the received access request is cancelled; and
an access request cancel notice sending device that sends an access request cancel notice when the access request is cancelled; and
the calling-side communication network includes:
an addressee information communicating device that communicates addressee information to the calling terminal based on the access request cancel notice, where the addressee information is information of an addressee to be accessed so as to withdraw the cancellation of the access request.
8. The communication system in accordance with claim 7, wherein the access request cancel determination device determines whether or not the received access request is cancelled based on any one of:
information contained in the access request;
a plurality of past access requests issued from the calling terminal which sent the present access request; and
stored information about a plurality of past access requests issued from the calling terminal which sent the present access request.
9. The communication system in accordance with claim 7, wherein the addressee information communicating device replaces information of an addressee in the called-side communication network, which is contained in the access request cancel notice, with information of an addressee in the calling-side communication network, and communicates the replaced information as the addressee information to the calling terminal.
10. A communication control method used in a communication system which controls communication between a calling terminal connected to a calling-side communication network and a called terminal connected to a called-side communication network, wherein:
11. The communication control method in accordance with claim 10, wherein the access request cancel determination device determines whether or not the received access request is cancelled based on any one of:
12. The communication control method in accordance with claim 10, wherein the addressee information communicating device replaces information of an addressee in the called-side communication network, which is contained in the access request cancel notice, with information of an addressee in the calling-side communication network, and communicates the replaced information as the addressee information to the calling terminal.
US13122274 2008-10-06 2009-10-06 Communication system and communication control method Active 2030-01-17 US8634318B2 (en)
JP2008329148A JP2010114870A (en) 2008-10-06 2008-12-25 Communication system and method of controlling communication
JP2008-329148 2008-12-25
PCT/JP2009/005195 WO2010041430A1 (en) 2008-10-06 2009-10-06 Communication system and communication control method
PCT/JP2009/005195 A-371-Of-International WO2010041430A1 (en) 2008-10-06 2009-10-06 Communication system and communication control method
US14099258 Continuation US9131048B2 (en) 2008-10-06 2013-12-06 Communication system and communication control method
US20110222481A1 true true US20110222481A1 (en) 2011-09-15
US8634318B2 US8634318B2 (en) 2014-01-21
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US13122274 Active 2030-01-17 US8634318B2 (en) 2008-10-06 2009-10-06 Communication system and communication control method
US14099258 Active US9131048B2 (en) 2008-10-06 2013-12-06 Communication system and communication control method
US (2) US8634318B2 (en)
EP (1) EP2346300A4 (en)
JP (1) JP2010114870A (en)
KR (1) KR101280124B1 (en)
CN (1) CN102172096B (en)
WO (1) WO2010041430A1 (en)
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CN102172096B (en) 2016-01-20 grant
KR20110050727A (en) 2011-05-16 application
WO2010041430A1 (en) 2010-04-15 application
US9131048B2 (en) 2015-09-08 grant
EP2346300A4 (en) 2013-10-09 application
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KR101280124B1 (en) 2013-06-28 grant
CN102172096A (en) 2011-08-31 application
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIGA, SHINGO;TAMURA, TOSHIYUKI;REEL/FRAME:026342/0825