Source: http://www.google.com/patents/US20060199571?dq=5251294
Timestamp: 2017-11-24 08:13:24
Document Index: 157801458

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Patent US20060199571 - Repeat dealing in wireless networks to busy called parties - Google Patents
A wireless network is disclosed that provides repeat dialing to busy called parties. The wireless network includes an originating MSC system that serves a calling party, and a terminating MSC system that serves a called party. The calling party initiates a call to the called party through the originating...http://www.google.com/patents/US20060199571?utm_source=gb-gplus-sharePatent US20060199571 - Repeat dealing in wireless networks to busy called parties
Publication number US20060199571 A1
Application number US 11/071,481
Also published as US7613470, US7945274, US20100003971
Publication number 071481, 11071481, US 2006/0199571 A1, US 2006/199571 A1, US 20060199571 A1, US 20060199571A1, US 2006199571 A1, US 2006199571A1, US-A1-20060199571, US-A1-2006199571, US2006/0199571A1, US2006/199571A1, US20060199571 A1, US20060199571A1, US2006199571 A1, US2006199571A1
Inventors Frances Chin, Paul Mui, Alok Sharma
Repeat dealing in wireless networks to busy called parties
US 20060199571 A1
A wireless network is disclosed that provides repeat dialing to busy called parties. The wireless network includes an originating MSC system that serves a calling party, and a terminating MSC system that serves a called party. The calling party initiates a call to the called party through the originating MSC system, and the terminating MSC system determines that the called party is busy on another call. The originating MSC system then receives a repeat dialing instruction from the calling party and transmits a repeat dialing indicator to the terminating MSC system. The terminating MSC system identifies when the called party becomes available in substantially real time. When available, the terminating MSC system attempts to set up a call between the called party and the calling party.
an originating Mobile Switching Center (MSC) system that serves a calling party; and
a terminating Mobile Switching Center (MSC) system that serves a called party;
the originating MSC system receives a repeat dialing instruction from the calling party placing a call to the called party that is busy on another call, and transmits a repeat dialing indicator to the terminating MSC system;
the terminating MSC system receives the repeat dialing indicator, identifies when the called party becomes available, and attempts to set up a call between the called party and the calling party responsive to identifying that the called party has become available.
the terminating MSC system stores the repeat dialing indicator and a Mobile Station Identifier (MSID) of the calling party in a call register for the called party, and accesses the call register for the called party responsive to determining that the called party has become available to determine if repeat dialing has been activated.
the originating MSC system receives the call from the calling party, and transmits the call setup message to the terminating MSC system;
the terminating MSC system determines if the called party is available responsive to the call setup message, and transmits a busy message to the originating MSC system responsive to determining that the called party is busy on another call; and
the originating MSC system transmits the busy message to the calling party responsive to receiving the busy message from the terminating MSC system.
the terminating MSC system identifies when the called party becomes available in real-time.
6. The wireless network of claim 1 further comprising a Home Location Register (HLR) system of the calling party, wherein:
the originating MSC system stores the last-dialed number of the calling party in the HLR system, retrieves the last-dialed number of the calling party from the HLR system responsive to receiving the repeat dialing indicator, and transmits the repeat dialing indicator to the terminating MSC system for the called party.
the originating MSC system receives the repeat dialing instruction and a dialed number for the called party from the calling party, and transmits the repeat dialing indicator to the terminating MSC system for the called party.
the originating MSC system plays an announcement to the calling party that the called party is busy on another call, receives the repeat dialing instruction responsive to the announcement, and transmits the repeat dialing indicator to the terminating MSC system for the called party.
9. A method of operating a wireless network for providing repeat dialing, the wireless network comprising an originating Mobile Switching Center (MSC) system that serves a calling party and a terminating Mobile Switching Center (MSC) system that serves a called party, the method comprising:
receiving a repeat dialing instruction in the originating MSC system from the calling party placing a call to the called party that is busy on another call;
transmitting a repeat dialing indicator from the originating MSC system to the terminating MSC system;
identifying when the called party becomes available in the terminating MSC system; and
attempting to set up a call between the called party and the calling party responsive to identifying that the called party has become available.
storing the repeat dialing indicator and a Mobile Station Identifier (MSID) for the calling party in a call register for the called party in the terminating MSC system; and
accessing the call register for the called party responsive to determining that the called party has become available to determine if repeat dialing has been activated.
receiving a call setup message for the call from the calling party in the originating MSC system;
transmitting the call setup message from the originating MSC system to the terminating MSC system;
determining if the called party is available in the terminating MSC system responsive to the call setup message;
transmitting a busy message from the terminating MSC system to the originating MSC system responsive to determining that the called party is busy on another call; and
transmitting the busy message from the originating MSC system to the calling party responsive to receiving the busy message from the terminating MSC system.
12. The method of claim 9 wherein identifying when the called party becomes available comprises:
identifying when the called party becomes available in real-time.
14. The method of claim 9 wherein the wireless network further comprises a Home Location Register (HLR) system of the calling party, the method further comprising:
storing the last-dialed number of the called party in the HLR system;
retrieving the last-dialed number of the calling party from the HLR system responsive to receiving the repeat dialing indicator; and
transmitting the repeat dialing indicator from the originating MSC system to the terminating MSC system for the called party.
transmitting the repeat dialing indicator to the terminating MSC system for the called party.
playing an announcement from the originating MSC system to the calling party that the called party is busy on another call;
an originating Mobile Switching Center (O-MSC) that serves a calling party; and
a serving Mobile Switching Center (S-MSC) that serves a called party;
the O-MSC receives a call from the calling party to the called party and transmits a call setup message to the S-MSC;
the S-MSC determines if the called party is available responsive to the call setup message, and transmits a busy message to the O-MSC responsive to determining that the called party is busy on another call;
the O-MSC transmits the busy message to the calling party responsive to receiving the busy message from the S-MSC;
the O-MSC receives a repeat dialing instruction from the calling party and transmits a repeat dialing indicator to the S-MSC;
the S-MSC receives the repeat dialing indicator, identifies when the called party becomes available in substantially real-time, and attempts to set up a call between the called party and the calling party responsive to identifying that the called party has become available and determining that repeat dialing has been activated.
the S-MSC stores the repeat dialing indicator and a Mobile Station Identifier (MSID) for the calling party in a call register for the called party, and accesses the call register for the called party responsive to determining that the called party has become available to determine if repeat dialing has been activated.
the wireless network further comprises another Mobile Switching Center (MSC) adapted to provide soft handoffs with the S-MSC, wherein if the called party moves to a location served by the other MSC, then:
the S-MSC transmits a soft handoff message to the other MSC that includes a repeat dialing indicator and a Mobile Station Identifier (MSID) for the calling party; and
the other MSC receives the repeat dialing indicator and the MSID, identifies when the called party becomes available in substantially real-time, and attempts to set up a call between the called party and the calling party responsive to determining that repeat dialing has been activated and determining that repeat dialing has been activated for the called party based on the repeat dialing indicator.
20. The wireless network of claim 17 wherein:
the wireless network further comprises another Mobile Switching Center (MSC) system that does not provide for soft handoffs with the S-MSC but does provide for hard handoffs, wherein if the called party moves to a location served by the other MSC, then:
the S-MSC transmits an ANSI-41 hard handoff message to the other MSC that includes a repeat dialing indicator and a Mobile Station Identifier (MSID) for the calling party; and
the other MSC receives the repeat dialing indicator and the MSID, identifies when the called party becomes available in substantially real-time, and attempts to set up a call between the called party and the calling party responsive to identifying that the called party has become available and determining that repeat dialing has been activated for the called party based on the repeat dialing indicator.
The invention solves the above and other related problems by providing for repeat dialing in wireless networks for called parties that are busy on other calls. Service providers can advantageously offer the repeat dialing feature to a growing number of mobile subscribers. Repeat dialing is effectively implemented by having a terminating Mobile Switching Center (MSC) system, serving a called party, identify when the called party is available. The terminating MSC system can advantageously determine when the called party is available in substantially real time. Therefore, the terminating MSC system can immediately attempt to set up a call to the called party if repeat dialing has been activated. If the called party is only available for a matter of seconds, the terminating MSC system can repeat dial the called party during that short window of availability.
Being “busy” may mean a number of things as illustrated by the following. First, the called party is busy if the called party is on another call and does not subscribe to call waiting. Second, the called party is busy if the called party is on another call, subscribes to call waiting, but the call waiting feature is turned off. Third, the called party is busy if the called party is already on a call waiting call. There may be other scenarios where the called party is considered “busy”.
FIGS. 1-9 and the following description depict specific exemplary embodiments of the invention to teach those skilled in the art how to make and use the best mode of the invention. For the purpose of teaching inventive principles, some conventional aspects of the invention have been simplified or omitted. Those skilled in the art will appreciate variations from these embodiments that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. As a result, the invention is not limited to the specific embodiments described below, but only by the claims and their equivalents.
Originating MSC system 110 serves calling party 102. The term “calling party” may refer to a communication device and a user of the communication device. Calling party 102 may comprise a mobile calling party using a mobile communication device, such as a mobile phone, a PDA, etc, that is portable or otherwise mobile and transmits and receives messages via wireless signals. Terminating MSC system 114 serves called party 104. The term “called party” may refer to a communication device and a user of the communication device. Called party 104 comprises a mobile called party in this embodiment. However, either calling party 102 or called party 104 may comprise a wire line calling party in other embodiments.
Originating MSC system 110 transmits a call setup message to terminating MSC system 114. A call setup message comprises any message used to set up or assist in setting up a call. Terminating MSC system 114 receives the call setup message, and determines that called party 104 is busy on another call. Being “busy” may mean a number of things as illustrated by the following. First, called party 104 is busy if called party 104 is on another call and does not subscribe to call waiting. Second, called party 104 is busy if called party 104 is on another call, subscribes to call waiting, but the call waiting feature is turned off. Third, called party 104 is busy if called party 104 is already on a call waiting call. Terminating MSC system 114 then transmits a busy message to originating MSC system 110. The busy message comprises any message that indicates that called party 104 is busy on another call. Originating MSC system 110 transmits the same or another busy message (or busy tones) to calling party 102.
Originating MSC system 110 then receives a repeat dialing instruction from calling party 102. Responsive to the repeat dialing instruction, originating MSC system 110 transmits a repeat dialing indicator (RDI) to terminating MSC system 114. A repeat dialing indicator comprises any data, flag, or other information that indicates that the repeat dialing feature has been activated by calling party 102. Originating MSC system 110 may also transmit a Mobile Station Identifier (MSID) for calling party 102 to MSC system 114 with the repeat dialing indicator. If calling party 102 subscribers to the repeat dialing feature, then originating MSC system 110 may retrieve the last-dialed number of calling party 102 in order to transmit the MSID.
O-MSC 311 transmits a LocationRequest invoke message (LOCREQ INV) to HLR 322 serving called party 304. The LocationRequest invoke message is to determine where to route the call. The LocationRequest invoke message may be transmitted in parallel to the FeatureRequest invoke message so that call setup time is not affected by storing the last-dialed number of calling party 102. Responsive to the LocationRequest invoke message, HLR 322 determines that S-MSC 321 is serving called party 304, and transmits a RoutingRequest invoke message (ROUTEREQ INV) to S-MSC 321.
S-MSC 321 receives the RoutingRequest invoke message and determines the availability of called party 304. Because S-MSC 321 determines that called party 304 is busy on a current call, S-MSC 321 transmits a RoutingRequest return result (ROUTREQ RR) to HLR 322 indicating that called party 304 is busy. HLR 322 then transmits a LocationRequest return result message (LOCREQ RR) to O-MSC 311 indicating that called party 304 is busy. O-MSC 311 then transmits a busy message to calling party 302, and calling party hangs up.
Calling party 302 initiates a new call to activate the repeat dialing feature. Calling party 302 enters a repeat dialing instruction followed by a telephone number to be repeat-dialed (the number for called party 304 in this embodiment). For instance, a repeat dialing instruction may comprise dialing *66 followed by the telephone number for called party 304. Even though calling party 302 is not a full-time subscriber to the repeat dialing feature, calling party 302 may activate the feature on a per-call basis. O-MSC 311 receives the repeat dialing instruction and the telephone number from calling party 302. O-MSC 311 then transmits a LocationRequest invoke message to HLR 322 (the HLR serving called party 304). The LocationRequest invoke message includes a repeat dialing indicator (RDI) that indicates to HLR 322 that calling party 302 has activated the repeat dialing feature. The LocationRequest invoke message also includes the MSID for calling party 302. HLR 322 then transmits a RoutingRequest invoke message to S-MSC 321. The RoutingRequest invoke message includes the repeat dialing indicator and the MSID for calling party 302. S-MSC 321 stores the repeat dialing indicator and the MSID for calling party 302 in call register 323 for called party 304. At this point, repeat dialing is activated.
O-MSC 311 then transmits an announcement to calling party 302. The announcement informs calling party 302 that called party 304 is busy, and asks calling party 302 if the repeat dialing feature should be activated. For instance, the announcement may be: “The party you have called is busy, please enter a “1” if you would like to activate the repeat dialing feature for a cost of $0.75.”
If calling party 302 wants to activate the repeat dialing feature, calling party 302 enters a repeat dialing instruction, such as entering “1” on a keypad. O-MSC 311 receives the repeat dialing instruction from calling party 302. O-MSC 311 has already stored the last-dialed number of calling party 102 in its call register. O-MSC 311 then transmits a LocationRequest invoke message to HLR 322 (the HLR serving called party 304). The LocationRequest invoke message includes a repeat dialing indicator (RDI) that indicates to HLR 322 that calling party 302 has activated the repeat dialing feature. The LocationRequest invoke message also includes the MSID for calling party 302. HLR 322 then transmits a RoutingRequest invoke message to S-MSC 321. The RoutingRequest invoke message includes the repeat dialing indicator and the MSID for calling party 302. S-MSC 321 stores the repeat dialing indicator and the MSID for calling party 302 in call register 323 for called party 304. At this point, repeat dialing is activated.
FIG. 8 illustrates a scenario where called party 304 moves among MSCs that support inter-MSC soft handoffs in an exemplary embodiment of the invention. Assume for this embodiment, that calling party 302 placed a call to called party 304, and called party 304 is busy on a another call. Called party 304 is initially busy on the call served by S-MSC 321. The messaging in wireless network 300 is as described in FIG. 7 until called party 304 moves to a location served by MSC 351 instead of S-MSC 321 (see FIG. 3). Also assume that S-MSC 321 and MSC 351 support inter-MSC soft handoffs. When called party 304 has moved, S-MSC 321 transfers a soft handoff message to MSC 351 to handoff the call to MSC 351. The soft handoff message includes the repeat dialing indicator (RDI) and the MSID of calling party 302. MSC 351 stores the repeat dialing indicator and the MSID for calling party 302 in a call register for called party 304.
EP2563000A1 * Nov 7, 2011 Feb 27, 2013 Alcatel Lucent Methods for providing call back service in GSM
U.S. Classification 455/415, 455/433
Cooperative Classification H04W4/16, H04M3/48, H04W76/02, H04M2207/18
European Classification H04M3/48, H04W4/16
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHIN, FRANCES MU-FEN;MUI, PAUL C.;SHARMA, ALOK;REEL/FRAME:016356/0167