WO1998000987A1 - System and method for flexible translation of wireless special dialing strings and mobile feature codes - Google Patents
System and method for flexible translation of wireless special dialing strings and mobile feature codes Download PDFInfo
- Publication number
- WO1998000987A1 WO1998000987A1 PCT/US1997/011318 US9711318W WO9800987A1 WO 1998000987 A1 WO1998000987 A1 WO 1998000987A1 US 9711318 W US9711318 W US 9711318W WO 9800987 A1 WO9800987 A1 WO 9800987A1
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- WIPO (PCT)
- Prior art keywords
- string
- dialed
- mobile
- sds
- subscriber
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Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
Definitions
- This invention relates generally to wireless telecommunications networks, and more specifically to a system and method for centralizing translation of a Special Dialing String (“SDS”) and a Mobile Feature Code (“MFC”) in a Home Location Register to permit consistent and/or customized translation of the SDS or MFC depending upon various subscriber and/or geographic factors.
- SDS Special Dialing String
- MFC Mobile Feature Code
- a typical wireless telecommunications network includes a large number of mobile switching centers, spread across a broad geographic area. Whenever a mobile subscriber places a call, a nearby mobile switching center receives the wireless signal for processing. As a mobile subscriber moves between different geographic locations, different mobile switching centers may receive the wireless signal and process the subscriber's call.
- SDS is a shortened or abbreviated dialing string, often beginning with a symbol such as "*" or "#” and typically containing 3 digits (e.g., *123).
- a mobile switching center receives the SDS and then translates the received SDS into a number to be dialed (e.g., *123 may be translated to 555-1234).
- MFCs mobile feature codes
- An MFC is similar to an SDS, but is used to control service features (e.g., call forwarding) from a mobile subscriber's handset.
- service features e.g., call forwarding
- translation of SDSs and MFCs occurs within the mobile switching center processing the mobile subscriber's call
- a mobile switching center in that same location performs the required SDS or MFC translation
- the same mobile subscriber is in a different geographic location and dials the same SDS or MFC (e.g , * 123)
- a different mobile switching center will likely process the call
- each mobile switching center independently translates SDSs into dialed numbers, it is possible that the same SDS will be translated into a different number to be dialed depending upon which mobile switching center performs the translation For example, if a subscriber in one geographic location, such as Texas, dials * 123, the Dallas mobile switching center may translate the call to dialed number 458-1440 Whereas, if a mobile subscriber in another geographic location, such as Washington, D C , the Washington D C mobile switching center may translate the call to a different dial number such as 555-1212 For the same reason, it is also possible that different mobile switching centers will activate/deactivate different service features in response to the same MFC processed by the different mobile switching centers
- each mobile switching center has to be independently programmed to translate received
- the present invention solves the problem of inconsistent special dialing string (“SDS”) translation and/or mobile feature code (“MFC”) operation by providing a system and method that consistently translates SDSs/MFCs, regardless of the geographic location of the mobile subscriber.
- SDS serial dialing string
- MFC mobile feature code
- the present invention employs a centralized translation table which is used to translate SDSs/MFCs that are received by any mobile switching center.
- the centralized translation table is contained in a Home Location Register ("HLR").
- HLR Home Location Register
- SDSs the centralized translation table
- SDS lookup table the centralized translation table
- MFC lookup table the centralized translation table is known as an MFC lookup table.
- All mobile switching centers communicate with the HLR for translation of received SDSs/MFCs.
- SDS/MFC Serial Digital Cellular Network
- the centralized HLR also contains mobile subscriber profile information as well as mobility management information, customized translation of SDSs is possible as well. For example, for any given mobile subscriber and/or mobile switching center, the same SDS may be translated into any number of different numbers to be dialed. Even in this case, however, the varying translations are still performed within the centralized HLR. Additional features of the present invention will become apparent from the following detailed description of the invention, the figures referenced therein and the appended claims. Brief Description of the Figures
- FIG 1 is a block diagram of an exemplary telecommunications system
- FIG. 2 is a block diagram generally illustrating operation of the invention
- FIG. 3 is a control flow diagram generally illustrating the processing of a Special Dialing String and a Mobile Feature Code
- FIG 4 illustrates the SDS lookup table record format
- FIG 5 illustrates the MFC lookup table record format
- FIG 6 is a control flow diagram illustrating priority processing of a Special Dialing String within the SDS lookup table in the Home Location Register
- FIG 7 is a control flow diagram illustrating priority processing of a Mobile Feature Code within the MFC lookup table in the Home Location Register
- the present invention provides a system and method for consistently translating a Special Dialing String (“SDS”) or a Mobile Feature Code (“MFC”) in a wireless telecommunications system
- SDS Special Dialing String
- MFC Mobile Feature Code
- the present invention provides for custom or "flexible" translation of an SDS based on mobile subscriber and/or geographic information.
- FIG. 1 illustrates an exemplary telecommunications system embodying the present invention.
- Telecommunications system 100 includes a centralized processing center 110, a Home Location Register (“HLR”) 1 15, and three mobile switching centers 122, 124, 126.
- HLR Home Location Register
- HLR 115 is a functional database with SDS and MFC lookup tables.
- HLR 115 comprises a logical HLR and a physical HLR Although only one logical HLR exists, it is within the scope of the invention to have multiple redundant copies of the same SDS and MFS lookup tables stored in HLR 1 15 for performance and/or reliability reasons. For example, there may be two HLR sites that are redundant.
- the SDS and MFC lookup tables may be partitioned.
- multiple HLRs may be used using industry techniques that coordinate and synchronize distributed databases as an alternative to centralized HLRs.
- HLR 115 is a functional database entity in charge of subscriber profile and mobility management information for mobile subscribers. A more complete description of HLR functionality appears in Cellular Radiotelecommunications Intersystem Operations: Functional Overview, EIA/TIA/IS-41, February 1996, which is herein incorporated by reference in its entirety. For present purposes, it is only necessary to understand that HLR 115 contains, inter aha, two general types of mobile subscriber information: (1) subscription information; and (2) location information.
- the subscription information contained within HLR 115 includes a list of basic and supplementary services for each mobile subscriber This list includes parameters such as teleservices subscription information, service restrictions (e g , roaming limitations), and supplementary service parameters More complete information regarding these parameters appears in EIA/TIA/IS-41, described above
- the location information contained within HLR 115 includes a visitor location register ("VLR") address and a mobile switching center (“MSC”) address, which are keyed to the mobile subscriber's Mobile Identification Number (“MIN”)
- MIN Mobile Identification Number
- the VLR and MSC may be keyed to the mobile subscriber's International Mobile Station Identity Number (“IMSI”)
- This mobile subscriber information permits HLR 1 15 to translate received SDSs into numbers to be dialed, as explained below Similarly, the mobile subscriber information permits HLR 1 15 to translate MFCs to cause a change in a mobile subscriber's profile
- An SDS/MFC may conveniently be thought of as a dialed string that is configured in any of the following ways (1) three digits in length, (2) begins with a single star ("*"), (3) begins with a double star ("**"); (4) begins with a pound sign ("#"); or (5) begins with a double pound sign ("##")
- a dialed string that is configured in any of the following ways (1) three digits in length, (2) begins with a single star ("*"), (3) begins with a double star ("**"); (4) begins with a pound sign ("#"); or (5) begins with a double pound sign ("##")
- One of ordinary skill in the art will recognize that the present invention is, however, not limited to only these exemplary SDS/MFC formats For example, although a length of three digits is described, it is withing the scope of the invention to use any length, for example, a length of one to ten digits
- mobile switching centers address HLR 115 through the use of a trigger
- the trigger is set in any of the subscriber profiles stored in HLR 1 15
- the trigger is downloaded to the mobile switching center as a result of a registration request from the MSC to the HLR, for example, upon a request generated by the MSC as a result of subscriber powering on their phone
- the trigger comprises an origination trigger parameter that is set to trigger whenever a pre-condition is satisfied
- the trigger may be set such that any time the mobile service subscriber dials, for example, a three digit string or a string that begins with a star (*), double star (**), a pound (#), or a double pound (##) the trigger is launched
- the trigger is initially downloaded from HLR 1 15 to the mobile switching center
- the dialed digits are received at the mobile switching center, if the dialed digits are of the type that activate the trigger, then the mobile switching center launches a query to HLR 1 15
- FIG 2 illustrates generally the operation of the present invention within an exemplary telecommunications system
- FIG 2 illustrates the operation of the present invention in a system including only two mobile switching centers 204, 214
- the present invention is equally applicable to systems including any number of mobile switching centers
- Mobile subscriber 202 first dials an SDS/MFC (e g , * 123) A wireless signal containing the SDS/MFC is received by nearby mobile switching center 204 which becomes responsible for processing the mobile subscriber's call Mobile switching center 204 then passes the received SDS/MFC (* 123), together with other information, to centralized processing center 1 10 Translation of the received SDS/MFC into a number to be dialed (or feature control) is performed by the Home Location Register 1 15 within centralized processing center 1 10.
- the number to be dialed is returned to mobile switching center 204 This permits mobile switching center 204 to dial the translated number (e.g , 555-1212)
- the mobile subscriber's profile is changed This causes a change in the mobile subscriber's service features
- SDS/MFC e g * 123
- mobile subscriber 212 may be the same as, or different from, mobile subscriber 202
- the first case (where mobile subscriber 202 is the same as mobile subscriber 212) would occur when the same mobile subscriber dials the same SDS/MFC from two different locations This could occur if the mobile subscriber has changed locations between placing the calls In this case, a different mobile switching center 204, 214 would be responsible for processing each of the calls
- the second case (where mobile subscriber 202 is different from mobile subscriber 212) would occur if two different mobile subscribers in two different geographic areas dial the same SDS/MFC
- centralized processing center 1 10 performs translation of the SDS/MFC Therefore, consistent translation of the SDS/MFC is ensured
- FIG 3 generally illustrates the processing of a received wireless st ⁇ ng
- Processing of the received string by F£LR 115 within centralized processing center 1 10 begins at step 310, where the received string is immediately processed according to step 320
- HLR 1 15 first checks the received st ⁇ ng to determine whether it is indeed an actual SDS, or whether it is a valid MFC In a preferred embodiment, if the received string begins with either a single star ("*") or a double star ("**"), the string may represent an MFC control request, and not an actual SDS
- a complete description of Mobile Feature Codes and mobile feature code processing is provided in Cellular Features Description, EIA/TIA/IS-53, May 1995, which is incorporated herein by reference in its entirety
- HLR 1 15 processes the received string as a feature code as shown generally by step 325, where processing continues immediately according to step 335 As shown in steps 335 and 345, HLR 1 15 uses an MFC lookup table to convert the MFC into a change in the mobile subscriber's profile Specific details regarding this conversion/translation appear below Following translation of the received MFC, processing within HLR 115 is complete, as shown by step 360
- HLR processing continues according to step 330, where processing continues immediately according to step 340
- HLR 1 15 uses an SDS lookup table to convert the actual SDS into a number to be dialed Specific details regarding this conversion/translation appear below
- processing within HLR 115 is complete, as shown by step 360
- the number to be dialed is then preferably returned to the mobile switching center for actual dialing
- FIG 4 illustrates the SDS lookup table 410 record format, as used by HLR 115 to translate received SDSs
- SDS Lookup Table 410 records include the dialed string number 420 ("DS"), a subscriber group number 430 (“SGN”), an SDS mobile switching center group number 440 (“MGN”), and the number to be dialed 450 (translated number) Using the information in SDS lookup table 410,
- HLR 115 can translate a received SDS into a number to be dialed
- Translation of received SDSs is preferably implemented using a table driven method
- the MSC responsible for processing the mobile subscriber's call sends the SDS, the mobile subscriber's mobile identification number ("MIN"), and the SDS MSC Identification number to HLR
- the table utilized can associate SDSs with particular subscribers, particular geographies, or a combination of both MFC processing is very similar, however with an important distinction
- FIG. 5 illustrates the MFC lookup table 510 record format, as used by HLR 1 15 to translate received MFCs
- MFC Lookup Table 510 records include the dialed string number 520 ("DS"), a subscriber group number 530 ("SGN”) and an action 540 to invoke a feature and change the subscriber's profile Action 540 invokes a feature, for example, to change to call forwarding or to disable call waiting
- HLR 115 can translate a received MFC into a change to the mobile subscriber's profile. Because it is desirable to have MFC control remain consistent regardless of a mobile subscriber's geographic location, the MFC lookup table does not require MGN entries.
- MFC translation/control is also preferably implemented using a table driven method.
- the MSC responsible for processing the mobile subscriber's call sends the MIN and the MFC to HLR 115 in the centralized processing center.
- HLR 1 15 uses this information to determine which SGN the mobile subscriber is assigned to.
- the user's profile can then be changed according to the MFC which was dialed.
- SDSs are translated according to the following priority order: (1) An SDS having significance for a particular subscriber and a particular geography has the highest priority, (2) An SDS having significance for any subscriber in a particular geography has the second highest priority; (3) An SDS having significance for a particular subscriber in any geography has the third highest priority; and (4) An SDS having non-subscriber specific and non-geographic specific significance has the lowest priority.
- the present invention ensures consistent translation of SDSs, while at the same time permits customized/flexible translation where desired. For example, any specific SDS can be provisioned to translate to the same dialed string for all subscribers (e.g., *123 translates to 555- 1212). However, for a specific subscriber (or group of subscribers), a different translation could be designated for the same SDS. Because subscriber specific strings have higher priority than non-subscriber specific strings, the desired translation would therefore be ensured.
- FIG. 6 is a control flow diagram illustrating the translation of an SDS by HLR 1 15 according to the priority order described above.
- HLR 1 15 uses a table driven method to determine the proper translation for an SDS. As explained in detail below, the method takes into account (1) the SDS, (2) the SDS subscriber group number ("SGN”), and (3) the SDS mobile switching center group number (“MGN”) for the mobile switching center serving the mobile subscriber
- SGN SDS subscriber group number
- MGN SDS mobile switching center group number
- processing begins at step 610, where HLR 1 15 immediately processes the SDS according to steps 620-650 Steps 620-650 implement the preferred priority order described above Processing continues in the order shown until a match is found, or until all four searches have been performed Thus, processing comprises performing four lookups to the same table, SDS lookup table 400 Each of these steps is explained below First, as shown in step 620, HLR 1 15 searches SDS lookup table 400 for a subscriber group specific dialing string that is also specific to a geographical area group (DS, SGN, MGN) Next, as shown in step 630, HLR 1 15 searches SDS lookup table 400 for a dialed string that is specific to a geographic area group (DS, 0, MGN) The "0" indicates that all groups are considered Next, as shown in step 640, HLR 1 15 searches SDS lookup table 400 for a subscriber specific dialing string that is not specific to a geographic area group (DS, SGN, 0) Finally, as shown in step 650, HLR 115 searches SDS lookup table
- an SDS can apply to a specific subscriber by placing only that subscriber in any particular subscriber group number Similarly, a single mobile switching center can be assigned to an MGN, permitting geographic control of SDS translation MFC lookup records are similarly maintained Although MFC lookup tables do no include MGNs because it is assumed that a user would want to use the same codes to control features in their profile regardless of their geographic location, it is within the scope of the invention to include MGNs in the MFC lookup table if desirable.
- FIG. 7 is a control flow diagram illustrating the translation of a MFC by HLR 115 HLR 115 uses a table driven method to determine the proper translation for a MFC.
- Processing begins at step 710, where HLR 1 15 processes the MFC according to steps 720 and 730. Processing comprises performing two lookups to the same table, MFC lookup table 500 First, as shown in step 720, HLR 115 searches MFC lookup table 500 for a subscriber group specific dialing string (DS, SGN). Next, as shown in step 730, HLR 1 15 searches MFC lookup table 500 for a global dialed string that is not dependent on the subscriber group (DS, 0). The process ends at step 740.
- DS subscriber group specific dialing string
- SDS/MFC translation can be standardized across all subscribers and/or geographies SDS translation can also be customized for specific mobile subscribers (or groups of subscribers) and/or particular geographies The same SDSs/MFCs can therefore be re-used for different purposes.
- the disclosed translation method can also be applied to any telecommunications system using dialing strings While various embodiments of the present invention have been described above, it should be understood that they have been presented by the way of example only, and not limitation.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10504363A JP2000513890A (en) | 1996-06-28 | 1997-06-30 | System and method for flexible conversion of wireless special dial strings to portable special handling codes |
EP97932370A EP0950325A1 (en) | 1996-06-28 | 1997-06-30 | System and method for flexible translation of wireless special dialing strings and mobile feature codes |
AU35845/97A AU3584597A (en) | 1996-06-28 | 1997-06-30 | System and method for flexible translation of wireless special dialing strings and mobile feature codes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/672,810 US6122501A (en) | 1996-06-28 | 1996-06-28 | System and method for flexible translation of wireless special dialing strings and mobile feature codes |
US08/672,810 | 1996-06-28 |
Publications (1)
Publication Number | Publication Date |
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WO1998000987A1 true WO1998000987A1 (en) | 1998-01-08 |
Family
ID=24700095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/011318 WO1998000987A1 (en) | 1996-06-28 | 1997-06-30 | System and method for flexible translation of wireless special dialing strings and mobile feature codes |
Country Status (6)
Country | Link |
---|---|
US (1) | US6122501A (en) |
EP (1) | EP0950325A1 (en) |
JP (1) | JP2000513890A (en) |
AU (1) | AU3584597A (en) |
CA (1) | CA2259271A1 (en) |
WO (1) | WO1998000987A1 (en) |
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WO2000022800A1 (en) * | 1998-10-15 | 2000-04-20 | At Mobile.Com Corporation | System and method for controlling personal telephone number dialing lists and dialing capabilities |
EP1414258A1 (en) | 2002-10-22 | 2004-04-28 | O2(Germany) GmbH & Co. KG | Group hunting in a mobile communications system |
US7403970B1 (en) | 2000-10-25 | 2008-07-22 | Verisign, Inc. | Method and apparatus for assigning a virtual address to and text-messaging to multiple text-capable destination entities |
WO2009006195A2 (en) * | 2007-07-02 | 2009-01-08 | Motorola, Inc. | Method and system for optimizing two-stage dialing |
US7774502B2 (en) | 2000-10-25 | 2010-08-10 | Vikas Sanathana Murthy | Determining an international destination address |
US7865447B2 (en) | 2000-10-23 | 2011-01-04 | Starpound Corporation | Telecommunications initiated data fulfillment system |
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US6819933B1 (en) * | 1997-01-15 | 2004-11-16 | Sbc Technology Resources, Inc. | Communications system having pre-defined calling group |
US6584613B1 (en) * | 1999-03-19 | 2003-06-24 | International Business Machines, Corporation | Simplified TV viewer response system and method using special codes and subscriber custom calling codes |
US6317597B1 (en) * | 1999-09-24 | 2001-11-13 | 3Com Corp | Methods and system for geographically selecting data modems for data sessions over a wireless channel |
FR2810838B1 (en) * | 2000-06-22 | 2002-10-04 | Cit Alcatel | METHOD FOR ACCESSING A SERVICE FROM A MOBILE RADIO COMMUNICATION TERMINAL USING A SHORT NUMBER |
US20030045276A1 (en) * | 2001-08-28 | 2003-03-06 | Bondy William Michael | Communication network and method for enabling a mobile feature on a land line element |
ES2268088T3 (en) * | 2001-10-26 | 2007-03-16 | Intellprop Limited | TELECOMMUNICATIONS SERVICES DEVICE. |
US20040192340A1 (en) * | 2002-12-23 | 2004-09-30 | 422, Inc. | Method and system for database content security in directory assistance & information services systems |
US8732239B2 (en) * | 2003-10-02 | 2014-05-20 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | System and method for providing multimedia wireless messages across a broad range and diversity of networks and user terminal display equipment |
US7269642B2 (en) * | 2004-07-08 | 2007-09-11 | Motorola, Inc. | Customizing strings displayed upon a mobile device without altering core software of the device |
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US20070183596A1 (en) * | 2006-02-09 | 2007-08-09 | Festin Enterprises Corporation | Personal short code translation |
US20080064350A1 (en) * | 2006-09-13 | 2008-03-13 | Simphonick Holdings Ltd. | System and method for dailing a telephone number |
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WO2000022800A1 (en) * | 1998-10-15 | 2000-04-20 | At Mobile.Com Corporation | System and method for controlling personal telephone number dialing lists and dialing capabilities |
US6542733B1 (en) | 1998-10-15 | 2003-04-01 | Openwave Technologies Inc | System and method for controlling personal telephone number dialing lists and dialing capabilities |
US8635164B2 (en) | 2000-10-23 | 2014-01-21 | Starpound Corporation, Inc. | Telecommunications initiated internet link system |
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US7865447B2 (en) | 2000-10-23 | 2011-01-04 | Starpound Corporation | Telecommunications initiated data fulfillment system |
US7774502B2 (en) | 2000-10-25 | 2010-08-10 | Vikas Sanathana Murthy | Determining an international destination address |
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Also Published As
Publication number | Publication date |
---|---|
EP0950325A4 (en) | 1999-10-20 |
EP0950325A1 (en) | 1999-10-20 |
JP2000513890A (en) | 2000-10-17 |
AU3584597A (en) | 1998-01-21 |
CA2259271A1 (en) | 1998-01-08 |
US6122501A (en) | 2000-09-19 |
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