WO2008123983A2 - Method and system for controlling the roaming behaviour of mobile subscribers having active data sessions - Google Patents
Method and system for controlling the roaming behaviour of mobile subscribers having active data sessions Download PDFInfo
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- WO2008123983A2 WO2008123983A2 PCT/US2008/004258 US2008004258W WO2008123983A2 WO 2008123983 A2 WO2008123983 A2 WO 2008123983A2 US 2008004258 W US2008004258 W US 2008004258W WO 2008123983 A2 WO2008123983 A2 WO 2008123983A2
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- vpmn
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- data
- hpmn
- roaming
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/82—Criteria or parameters used for performing billing operations
- H04M15/8214—Data or packet based
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/80—Rating or billing plans; Tariff determination aspects
- H04M15/8038—Roaming or handoff
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/24—Accounting or billing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/74—Rating aspects, e.g. rating parameters or tariff determination apects
- H04M2215/7442—Roaming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/78—Metric aspects
- H04M2215/782—Data or packet based
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/06—Registration at serving network Location Register, VLR or user mobility server
Abstract
The present invention provides a solution to keep the usage within a data session as much as possible. It achieves this by steering the outbound roaming device back to the previous network A when the device is trying to switch network A to another network B while the usage of the data session by the outbound roaming device is. below a certain threshold in the current session. It also attempts to keep the session alive by sending alive packets to the VPMN SGSN when the usage by the outbound roaming device is below certain threshold in the current session and the session is about to be expired by the VPMN SGSN.
Description
A Data Roaming Optimizer
John Yue Jun Jiang and David Gillot
Related Applications
This application claims priority from United States Provisional Patent Application Serial No. 60/907,434 of same title, filed April 2, 2007 and is related to United States Patent Application entitled "Method And System For Cellular Network Traffic Redirection" Application No. 10/635,804 filed on August 05, 2003, claiming priority from August 05, 2002, now U.S. Patent No. 7 , 072 , 651Both of those related patent applications are incorporated herein by this reference in their entirety.
Field of the Invention
The present invention generally relates to mobile communication. More specifically, the invention relates to mobile communication corresponding to reduce data roaming charges .
Background of the Invention
As increasing competition in mobile telecommunications has been increasing in recent years, rates for voice calling have been dropping. Partly in hopes of compensating for lost revenue per user, operators of public mobile telecommunications networks have increasingly been deploying data and digital media. While
as of this writing, data revenue still accounts less than 10% of an operator's total revenue in general, providing data services is also more profitable than providing voice calling. Furthermore, mobile data services are essential these days to many enterprise solutions such as machine to machine applications and email services.
To encourage usage, many mobile operators are offering a flat-fee price plan for enterprise customers. Often, those flat-fee price plans even include international roaming, in regions with many national borders, or where certain operators do not provide nationwide coverage. Especially for certain machine- to-machine applications, such as truck and package tracking, this type of billing plan is very attractive. This is also quite useful for international business travelers who use Blackberry, (or other similar mobile email services such as that now being promoted by Apple for its iPhone) but do not want to worry about roaming charges for emails.
While the flat fee plan works well in attracting enterprise customers, it could potentially provoke significant loss of roaming profits. This is because data roaming charges by operators of the visited public mobile networks typically are based on a minimum number of bytes per session. If the roaming mobile devices change sessions too often before using a significant quantity of data services in the visited network, the home operator can end up owing more charges than necessary to the visited network.
If the home operator is not offering a flat fee plan, the end subscriber would end up incurring the additional cost. One way or another, either the home operator or the home operator's subscribers lose, in the state of the art.
For example, assuming a visit operator charges data roaming at a minimum of 1OK bytes per session. If a roaming device is only sending one byte per session for 10 sessions, despite only 10 bytes are sent, the visit operator would charge HPMN for 10*10K, IOOK bytes.
Therefore there is a need in the art for a system, method and computer program product capable of optimizing the use of data services while roaming, to aid a roaming user, or his home network, to utilize a visited network's minimum billing threshold for roaming data services optimally.
Summary of Invention
In a previous awarded patent, U.S. Patent No. 7,072,651 to Jiang, et al . , the inventors introduce a system and a method that can influence an outbound roamer's registration at which VPMN network in a country. The present invention comprises an improvement upon such state-of-the-art traffic redirection systems, by assisting an outbound roamer in continuing to use a roaming data services session with a current visited network, even when that user has not utilized much data during that session.
An embodiment of the present invention introduces a "keep-alive" mechanism in an outbound roamer's session, such that a data session with the visited network is maintained, even when the use that the roamer initiated is below the visited network's threshold, and the VPMN SGSN would otherwise expire that session.
Yet another embodiment of the present invention relating to data transmission in batches, provides for informing a roaming handset that a threshold minimum data threshold must be must be approached or reached prior to causing the handset to transmit data.
Brief Description of the Figures
Figure 1 depicts a system architecture of a DataRoamingOptimizer (DRO) solution under the present invention.
Figure 2 illustrates a normal GPRS PDP context activation and data transfer procedure under the present invention.
Figure 3 illustrates a network- initiated PDP context activation procedure under the present invention.
Figure 4 shows a signal flow for integrating the present invention in traffic redirection.
Figure 5 illustrates a signal flow of another embodiment of the present invent for maintaining a roaming data session.
Detailed Description of the Invention
Figure 1 shows a system architecture of an embodiment of the present invention for optimizing data usage at a visited network while roaming, also named
DataRoamingOptimizer (DRO) solution for the purposes of this teaching.
The system architecture comprises a probe at the IP interface Gp in front of the HPMN GGSN (and/or Gi interface behind the HPMN GGSN) and an SS7 (or Sigtran or other standard signaling language) -based traffic steering application ("Traffic Redirection" or "TR") conducted either in an in-signaling path mode or according to a passive monitoring or other approach. The probe can inform the Data Roaming Optimizer of the amount of one or more variables corresponding to a roamer's data usage, including without limitation: the roamer's current or overall data usage, IMSI, APN, IP address in a current data session.
Figure 2 illustrates a normal GPRS PDP context activation and data transfer procedure. And Figure 3 shows a network- initiated PDP context activation procedure, both under the present invention.
When an outbound roamer is changing network from a visited network A to a visited network B because of any of the following, operating a DRO under the present invention, a traffic steering application can continue to reject the device's registration at any VPMN other than the previous one, until some thresholds are satisfied.
• The A-network is losing coverage
• The A-network has low signal reception • The roaming device is automatically switching networks due to SIM preference to B-network over A-network
• The roaming device is automatically switching networks due to handset preference to B-network over A-network
• A switch in visited networks is being initiated for any other reason, especially if the roamer is still located within the visited network's country or geographic area of operations.
Figure 4 depicts another signal flow for integrating DRO with traffic redirection under the present invention. When an outbound roaming device is registered at a VPMN and the session data usage is below a certain threshold as detected by probe 110, HPMN traffic steering application TR 108 will reject the VPMN registration (GSM or GPRS) at 440 until some conditions are satisfied according to calculation 460. These conditions can include any of various thresholds with respect to retrials at a VPMN outbound roaming device's registration.
An aim of integrating DRO with traffic redirection under the present invention is to reject an outbound roamer' s registration at a new VPMN, so as to give the device a chance to come back to the old VPMN and continue the same data session as when that usage the previous VPMN remained below an optimal threshold.
Figure 5 illustrates a signal flow of another embodiment of the present invention aimed at leaving data usage ongoing within the same session at a single VPMN until the optimal threshold is reached. This embodiment addresses a case in which an outbound roamer is not using much data for a long time and the VPMN SGSN would otherwise have aborted the current session.
DRO in Figure 5 maintains a table of optimal WASP session duration or rating information with respect to different VPMNs. When an outbound roamer' s data session is about to expire at a VPMN SGSN and the data usage is still below a certain threshold according to calculation 530, then at 515 DRO can send a network-initiated live packet to the roaming device just to keep the data session alive. In a normal implementation, the roaming subscriber won't notice very much effects from his handset receiving the live packet.
Referring again to Figure 1, another embodiment of the present invention is related to data transmission in batch mode. In this embodiment, DRO 106 provides the roaming user' s handset with information that the handset can be caused to transmit data in batches that fulfill a predetermined threshold of the VPMN that the user is registered with. For example, the handset may be informed that data will not be transmitted until a batch of data of a predetermined size is approached or reached. Thus, the handset will not transmit data until the predetermined threshold is approached or reached. Alternatively, upon an attempt to register the user' s
handset at another VPMN, that registration may be permitted and the data accumulated will be ready for transmission depending on the predetermined threshold of the other VPMN.
Other Variations
Provided above for the edification of those of ordinary skill in the art, and not as a limitation on the scope of the invention, are detailed illustrations of a scheme for facilitating exchange of one or more signaling messages between a client network and an HSRP network. Numerous variations and modifications within the spirit of the present invention will of course occur to those of ordinary skill in the art in view of the embodiments that have been disclosed. For example, the present invention is implemented primarily from the point of view of GSM mobile networks as described in the embodiments. However, the present invention may also be effectively implemented on GPRS, 3G1 CDMA, WCDMA, WiMax etc., or any other network of common carrier telecommunications in which end users are normally configured to operate within a "home" network to which they normally subscribe, but have the capability of also operating on other neighboring networks, which may even be across international borders.
The examples under the two-node SPRS of the present invention detailed in the illustrative examples contained herein are described using terms and constructs drawn largely from GSM mobile telephony infrastructure.
However, use of these examples should not be interpreted
as limiting the invention to those media. The two-node SPRS and method can be of use and provided through any- type of telecommunications medium, including without limitation: (i) any mobile telephony network including without limitation GSM, 3GSM, 3G, CDMA, Wimax, VoIP, HSDPA, SIP, IMS, WCDMA or GPRS, satellite phones or other mobile telephone networks or systems; (ii) any so-called WiFi apparatus normally used in a home or subscribed network, but also configured for use on a visited or non- home or non-accustomed network, including apparatus not dedicated to telecommunications such as personal computers, Palm-type or Windows Mobile devices; (iii) an entertainment console platform such as Sony Playstation, PSP or other apparatus that are capable of sending and receiving telecommunications over home or non-home networks, or even (iv) fixed-line devices made for receiving communications, but capable of deployment in numerous locations while preserving a persistent subscriber id such as the eye2eye devices from Dlink; or telecommunications equipment meant for voice over IP communications such as those provided by Vonage or Packetδ .
In describing certain embodiments of the system under the present invention, this specification follows the path of a telecommunications call, from a calling party to a called party. For the avoidance of doubt, such a call can be a normal voice call, in which the subscriber telecommunications equipment is also capable of visual, audiovisual or motion-picture display. Alternatively, those devices or calls can be for text, video, pictures or other communicated data.
In the foregoing specification, specific embodiments of the present invention have been described. However, one of ordinary skill in the art will appreciate that various modifications and changes can be made without departing from the scope of the present invention as set forth in the claims below. Accordingly, the specification and the figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications are intended to be included within the scope of present invention. The benefits, advantages, solutions to problems, and any element (s) that may cause any benefit, advantage, or solution to occur, or to become more pronounced, are not to be construed as a critical, required, or essential feature or element of any or all of the claims.
APPENDIX
Technical References (each of which is incorporated by reference in its entirety)
GSM 902 on MAP specification
Digital cellular telecommunications system (Phase 2+) ; Mobile Application Part (MAP) Specification (3GPP TS 09.02 version 7.9.0 Release 1998)
GSM 340 on SMS
Digital cellular telecommunications system (Phase 2+) ; Technical realization of the Short Message Service (SMS) ; (GSM 03.40 version 7.4.0 Release 1998)
GSM 378 on CAMEL
Digital cellular telecommunications system (Phase 2+) ;
Customized Applications for Mobile network Enhanced Logic
(CAMEL) Phase 2 ;
Stage 2
(GSM 03.78 version 6.7.0 Release 1997)
GSM 978 on CAMEL Application protocol
Digital cellular telecommunications system (Phase 2+) ;
Customized Applications for Mobile network Enhanced Logic
(CAMEL) ; CAMEL Application Part (CAP) specification
(GSM 09.78 version 7.1.0 Release 1998)
Signalling procedures and the Mobile Application Part
(MAP)
(Release 1999)
Q1214-Q1218 on Intelligent Networks
Q701-704 on SS7 MTP
Q711-Q714 on SS7 SCCP
Q760-Q769 on SS7 ISUP
Jiang et al 2003 TR: Cellular Traffic Redirection
Jiang 2006 IR 73 TR: IR 73 Compliant passive traffic steering
GSM 360 on GPRS
GSM 23060 on GPRS R99
GSM 960 on GPRS GTP 0
GSM 29060 on GPRS GTP 1
GSM 978 on CAMEL Application Protocol
GSM 379 on CAMEL Support of Optimal Routing (SOR)
GSM 318 on CAMEL Basic Call Handling
GSM 23119 Gateway Location Register
GSM 23120 MAP procedures in GLR
GSM 320 Security related network functions
ITU-T Recommendation Q.1214 (1995), Distributed functional plane for intelligent network CS-I.
ITU-T Recommendation Q.1218 (1995), Interface Recommendation for intelligent network CS-I.
ITU-T Recommendation Q.762 (1999), Signaling system No. 7
- ISDN user part general functions of messages and signals.
ITU-T Recommendation Q.763 (1999), Signaling system No. 7
- ISDN user part formats and codes.
ITU-T Recommendation Q.764 (1999), Signaling system No. 7
- ISDN user part signaling procedures.
ITU-T Recommendation Q.766 (1993), Performance objectives in the integrated services digital network application.
ITU-T Recommendation Q.765 (1998), Signaling system No. 7 - Application transport mechanism.
ITU-T Recommendation Q.769.1 (1999), Signaling system No. 7 - ISDN user part enhancements for the support of Number Portability.
Claims
1. A method of optimizing data usage by a user of a Home Public Mobile Network (HPMN) roaming in a first
Visited Public Mobile Network (VPMN) , the HPMN having a Data Roaming Optimizer (DRO) , the first VPMN having a predetermined threshold, the method comprising: determining information regarding the user' s data usage in the first VPMN; providing the information to the DRO; detecting, at the HPMN, an attempt to register the user at a second VPMN; and rejecting the attempt to register the user at the second VPMN if the predetermined threshold of the first VPMN has not been reached.
2. The method of claim 1, wherein the predetermined threshold is a data usage threshold.
3. The method of claim 1, wherein the predetermined threshold is a data session duration threshold.
4. A method of optimizing data usage by a user of a Home Public Mobile Network (HPMN) roaming in a first
Visited Public Mobile Network (VPMN) , the HPMN having a
Data Roaming Optimizer (DRO) , the first VPMN having a predetermined data session duration threshold, the user having a handset, the method comprising: providing the predetermined data session duration threshold to the DRO; and transmitting, to the user's handset, a network- initiated live packet when the predetermined data session duration threshold has not been reached.
5. A method of optimizing data usage by a user of a Home Public Mobile Network (HPMN) roaming in a first Visited Public Mobile Network (VPMN) , the HPMN having a Data Roaming Optimizer (DRO) , the first VPMN having a predetermined data batch size threshold, the user having a handset, the method comprising: determining information regarding the user's data usage in the first VPMN; providing the information to the DRO; and allowing transmission of data from the user's handset when the predetermined data batch size threshold is approached .
6. The method of claim 1, wherein the information regarding the user's data usage in the first VPMN is selected from a group consisting of data usage, data session duration, and data batch size.
7. The method of claim 1, wherein the information regarding the user' s data usage in the first VPMN is determined via a probe.
8. The method of claim 1, wherein the attempt to register the user at the second VPMN is rejected via traffic redirection.
9. The method of claim 8, wherein the traffic redirection is selected from a group consisting of passive monitoring traffic redirection and in-signaling path mode traffic redirection.
10. A system for optimizing data usage of a user of a Home Public Mobile Network (HPMN) roaming in a first
Visited Public Mobile Network (VPMN) , the HPMN having a Data Roaming Optimizer (DRO) , the first VPMN having a predetermined threshold, the system comprising: a determination module for determining information regarding the user' s data usage in the first VPMN; a transmission module for providing the information to the DRO; a detection module for detecting, at the HPMN, an attempt to register the user at a second VPMN; and a rejection module for rejecting the attempt to register the user at the second VPMN if the predetermined threshold of the first VPMN has not been reached.
11. The system of claim 10, wherein the predetermined threshold is a data usage threshold.
12. The system of claim 10, wherein the predetermined threshold is a data session duration threshold.
13. A system for optimizing data usage by a user of a Home Public Mobile Network (HPMN) roaming in a first Visited Public Mobile Network (VPMN) , the HPMN having a Data Roaming Optimizer (DRO) , the first VPMN having a predetermined data session duration threshold, the user having a handset, the system comprising: a providing module for providing the predetermined data session duration threshold to the DRO; and a transmission module for transmitting, to the user' s handset, a network-initiated live packet when the predetermined data session duration threshold has not been reached.
14. A system for optimizing data usage by a user of a Home Public Mobile Network (HPMN) roaming in a first Visited Public Mobile Network (VPMN), the HPMN having a Data Roaming Optimizer (DRO), the first VPMN having a predetermined data batch size threshold, the user having a handset, the system comprising: a determination module for determining information regarding the user's data usage in the first VPMN; a transmission module for providing the information to the DRO; a transmission module for allowing transmission of data from the user' s handset when the predetermined data batch size threshold is approached.
15. The system of claim 10, wherein the information regarding the user's data usage in the first VPMN is information selected from a group consisting of data usage, data session duration, and data batch size.
16. The system of claim 10, wherein the information regarding the user' s data usage in the first VPMN is determined via a probe.
17. The system of claim 10, wherein the attempt to register the user at the second VPMN is rejected via traffic redirection.
18. The system of claim 17, wherein the traffic redirection is selected from a group consisting of passive monitoring traffic redirection and in- signaling path mode traffic redirection.
19. A computer program product for use with a computer, the computer program product comprising a computer usable medium having a computer readable program code stored thereon for optimizing data usage of a user of a Home Public Mobile Network (HPMN) roaming in a first Visited Public Mobile Network (VPMN) , the HPMN having a Data Roaming Optimizer (DRO) , the first VPMN having a predetermined threshold, the computer program product performing the steps of : determining information regarding the user's data usage in the first VPMN; providing the information to the DRO; detecting, at the HPMN, an attempt to register the user at a second VPMN; and rejecting the attempt to register the user at the second VPMN if the predetermined threshold of the first VPMN has not been reached.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90743407P | 2007-04-02 | 2007-04-02 | |
| US60/907,434 | 2007-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2008123983A2 true WO2008123983A2 (en) | 2008-10-16 |
| WO2008123983A3 WO2008123983A3 (en) | 2009-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2008/004258 WO2008123983A2 (en) | 2007-04-02 | 2008-04-02 | Method and system for controlling the roaming behaviour of mobile subscribers having active data sessions |
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| Country | Link |
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| WO (1) | WO2008123983A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011005170A1 (en) | 2009-07-06 | 2011-01-13 | Synapse International S.A. | A method and system for managing roaming of a mobile equipment |
| CN102131149A (en) * | 2011-04-18 | 2011-07-20 | 北京神州数码思特奇信息技术股份有限公司 | Potential member excavating method of VPMN (virtual private mobile network) |
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| US20040192306A1 (en) * | 2003-03-24 | 2004-09-30 | Starhome Gmbh | Preferred network selection |
| EP1565028A1 (en) * | 2004-02-13 | 2005-08-17 | Star Home GmbH | Monitoring and management of roaming users |
| US7072651B2 (en) * | 2002-08-05 | 2006-07-04 | Roamware, Inc. | Method and system for cellular network traffic redirection |
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| US6493547B1 (en) * | 1999-05-17 | 2002-12-10 | Ericsson Inc. | Apparatus and methods for providing usage information in wireless communications systems |
| US7072651B2 (en) * | 2002-08-05 | 2006-07-04 | Roamware, Inc. | Method and system for cellular network traffic redirection |
| US20040192306A1 (en) * | 2003-03-24 | 2004-09-30 | Starhome Gmbh | Preferred network selection |
| EP1565028A1 (en) * | 2004-02-13 | 2005-08-17 | Star Home GmbH | Monitoring and management of roaming users |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011005170A1 (en) | 2009-07-06 | 2011-01-13 | Synapse International S.A. | A method and system for managing roaming of a mobile equipment |
| CN102131149A (en) * | 2011-04-18 | 2011-07-20 | 北京神州数码思特奇信息技术股份有限公司 | Potential member excavating method of VPMN (virtual private mobile network) |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008123983A3 (en) | 2009-01-08 |
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