Method and system for wireless number portability
Originating portfolio: ALU
Estimated expiration: 2028-Jun-30
Listed For Sale
Initial bid date: 2018-May-01
Potentially relevant companies (8): Alpha Networks, Axell Wireless Limited, Barracuda Networks, Inc., CommScope Technologies LLC, F-Secure Corporation, Huawei Technologies Co., Ltd., Juniper Networks Inc., ZTE Corporation
Products & technologies (7): Network:Management, Network:Services, Telecom:Infrastructure, Telecom:PSTN, Telecom:Subscriber Services, Wireless:Cellular Devices, Wireless:Infrastructure
A method and system for providing improved wireless number portability. This invention allows the mobile switching center (MSC) to use a separate database to store the number portability information gathered earlier through sending NPreq messages to the number portability database (NPDB) and various strategies for refreshing or updating the internal database. The invention enables the MSC to use the separate database to check whether a portable number is ported and what the associated location routing number (LRN) if it is ported, so that the MSC does not need to send NPreq messages to the NPDB many times for the same ported number. This invention may apply to any number of switching systems, including CDMA, GSM and UMTS mobile switching systems.
1. In a wireless communications network, a call processing method comprising:
receiving a call to a directory number via a mobile switching center;
checking whether number portability information for the directory number is stored in an internal portable directory number database in the mobile switching center, wherein the internal portable directory number database stores data relating to portable directory numbers, including their corresponding portability information such as an indication of whether the directory number is ported or not and an associated Location Routing Number if the directory number is a ported number;
bypassing an external number portability database (NPDB) and routing the call based upon the number portability information for the directory number, when there is number portability information for the directory number stored in the portable directory number database; and
when there is no number portability information for the directory number stored in the internal portable directory number database:
sending a number portability request message to an NPDB in communication with the mobile switching center;
receiving a number portability request return result from the NPDB;
inserting a number portability record for the directory number in the internal portable directory number database; and
routing the call using the number portability request return result received from the NPDB.
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