The HLR Router aids the optimization of HLR workloads over mobile networks by providing a centralized database of subscriber to HLR mappings. This allows mobile network operators to optimize the workloads of HLRs by pairing subscribers with HLRs based on their signaling activity patterns. It also optimizes capacity for each HLR by allowing subscriber ranges to be split over different HLRs and allows individual subscribers to be assigned to any HLR.
Additionally, the HLR eliminates the need to maintain subscriber routing information at every MSC in the network. When an HLR record is needed, the MSC routes the request to the HLR. The HLR uses global title translation to determine the correct HLR for the subscriber and sends the MSC request to that HLR. The HLR also provides the ability to route to mated HLRs based on SS7 network status, and to route to a default HLR if no translations exist for a given subscriber via exception routing. Not only does this eliminate the need to maintain subscriber routing information at every MSC in the network, this also allows great flexibility in distributing or redistributing subscribers across available HLRs.
This introduction will familiarize you with the basic operation, features, and components of the HLR Router.