Mated Pair For The HLR Redundancy

To give some geographical redundancy, each HLR is often coupled to another HLR at a different location, to create a mated pair and the load is split between them.In the article, we have designed the mated pair for the HLR redundancy which is based on the product provided by Alcatel. It is useful to apply the mated pair to the GSM network where Alcatel HLR had been deployed.We achieve the target as following: 1) replicate the data updates done on the HLR to the mate in an asynchronous manner; 2) switchover the crashed HLR to the mate in a short delay; 3) rollback the repaired HLR from the mate in a short delay.We illustrate the mated pair based on a lot of use cases. Therefore, the artical is useful to instruct the commercial launch of mated pair.Besides, the external requirements of mated pair is quite easy to meet, thus there is a good view for future commercial launch.