System and method for managing VoLTE session continuity information using logical scalable units

摘要

Logical scalable units (LSU) can be used within a single network data center to provide stateful scalability. However, LSUs are not suitable for operating across multiple network data centers in order to provide geographical redundancy in active-active scenarios while providing high availability. This is because the latencies associated with replicating full session information are unacceptably slow. An additional component in the LSU (known as an LSU Frontend) can be used to replicate a small subset of session information between LSUs. This subset of session information may be enough to enable LSUs to process requests in an acceptable way rather than outright failing. This may be particularly advantageous in scenarios where the requests relate to Voice over LTE calls, because outright failure is very perceivable to subscribers, and it causes resource leakage within the telecommunications network.

主权项

1. A method of communicating messages in communication system, comprising:
receiving a first request message in a processor of a multiprocessor computing system from a client component; extracting first information from the received first request message; using the extracted first information to obtain a common key; using the common key to identify an application component and to retrieve session continuity information from a cache memory of the multiprocessor computing system; generating an updated first request message that includes the retrieved session continuity information; sending the updated first request message to the identified application component; receiving a first response message from the identified application component in response to sending the updated first request message; forwarding the received first response message to the client component; receiving a second request message that includes updated session continuity information from the application component; extracting second information from the received second request message; determining the common key based on the extracted second information; using the common key to identify the cache memory; updating the information stored in the identified cache memory based on the updated session continuity information; and sending the received second request message to the client component.