Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
1998-08-07
2001-05-08
Maung, Nay (Department: 2681)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S422100
Reexamination Certificate
active
06230025
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention pertains to the distribution of telephonic features among mobile switch centers (MSCs).
Wireless intersystem communications in the telephony industry comply with ANSI41 which is the industry standard for wireless radio communications intersystem operations. The ANSI41 standard is adopted and recognized by the American National Standards Institute and is published by the Telecommunications Industry Association/Electronics Industry Association TR-45.2 subcommittee, the disclosure of which is incorporated by reference.
In a wireless network having a plurality of MSCs acting as nodes in the network, the telephonic features that are defined by parameters in a message are transmitted among the MSCs in accordance with the ANSI41 standard. Compliance with the ANSI41 Standard requires that forward and backward compatibility exist for messaging among the MSCs and nodes in a telephonic network. Thus, even though an MSC does not provide a feature defined by a parameter in a message, the ANSI41 Standard provides that the parameter supporting that feature be disregarded or ignored by the MSC not providing the feature and that the operation/call be handled in accordance with the ANSI41 Standard in all other respects.
In practice, wireless telephonic networks include MSCs supplied by many different vendors. If one MSC fails to comply with ANSI41 regarding the processing of an operation/call including a parameter having a feature not provided by the MSC then degradation of the processing of the operation/call occurs including a total failure to establish the call.
Currently, extensive preliminary testing is done to determine if a feature is going to encounter a problem messaging among the MSCs in a telephonic network. When a MSC is identified as not complying with the ANSI41 Standard, expensive and time consuming software fixes are implemented to overcome the problem. Then if the noncompliance is corrected, the software fixes are undone with a corresponding expense and time.
Telephonic features are proliferating, and the benefits of features such as caller ID, call waiting and call forwarding are universally recognized. The innovators and providers of such features are inhibited to offer a new feature because MSCs in the network that do not offer the feature and fail to comply with the ANSI41 Standard will not properly process a operation/call which includes a parameter associated with a new feature. Accordingly, the innovators and providers of new features are impeded from developing and distributing and test marketing new features and obtaining the revenues associated with the new features. Ultimately, the benefits derived by the consumer from new features are jeopardized.
The present invention is directed to overcoming, or at least reducing the effects of one or more of the problems set forth above.
SUMMARY OF THE INVENTION
A system and method are provided in accordance with the invention for distributing a telephonic feature among a plurality of MSCs in a telephonic network including generating a message with a parameter and selectively determining whether to distribute the parameter to other mobile switch centers in the network.
The invention further provides for generating a message at the sending mobile switch center having the parameter, and selectively determining whether to distribute the parameter to a selected one of the mobile switch centers.
In another aspect of the invention a control file is established for identifying in the control file a selected one of the mobile switch centers, and excluding distribution to the selected one of the mobile switch centers of a parameter having a selected feature determined not to be distributed. A server having a master control file is provided for establishing a call processing node associated with the sending mobile switch center, and receiving at the call processing node a copy of the master control file. A copy of the master control file is downloaded from the server to a call processing node of the sending mobile switch center. A call processing node having a software program is provided for processing information associated with the master control file.
In yet another aspect of the invention the master control file and a control file copy are stored in the memory of the call processing node and updated in real time or alternatively refreshed periodically.
These and other features and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings and the appended claims.
REFERENCES:
patent: 5583913 (1996-12-01), Taketsugu
patent: 5724664 (1998-03-01), Lantto
patent: 5884144 (1999-03-01), Chavez, Jr. et al.
patent: 5933784 (1999-08-01), Gallagher et al.
Chin Mary Wonmon
Garner Michael Antwong
Lucent Technologies - Inc.
Maung Nay
Vuong Quochien B.
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