Deterministic-based performance modeling of a cluster of nodes handling subscriber profile query and update in CDMA mobile switching center
✍ Scribed by David C. Ma
- Publisher
- Institute of Electrical and Electronics Engineers
- Year
- 2007
- Tongue
- English
- Weight
- 311 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1089-7089
No coin nor oath required. For personal study only.
✦ Synopsis
This paper presents performance modeling of processor occupancy in a cluster of nodes handling subscriber profile query and update in a code division multiple access (CDMA) mobile switching center (MSC). It also presents a simplified method to determine the profile update ratio that represents the fraction of autonomous registration (AR) and call events requiring subscriber profile updates. Four models are presented. The performance models developed offer a number of advantages, including enabling prediction of the home visitor location register (HVLR) capacity in a deterministic fashion to facilitate subscriber profile management and planning and to provide a simple method to determine the subscriber profile update ratio. The models are simple to use and provide accurate predictions. The models are platform-independent and can be easily applied to other platforms by substituting a new set of costs per message. Performance improvement by update bundling is also demonstrated, and future work on modeling update bundling is presented. © 2007 Alcatel-Lucent.
(HVLR-AP). Functionality of the nodes includes retrieving the record for processing a call, autonomous registration (AR) and other events, and updating of the record if change(s) are found during these events. An updated record (as well as the insertion of a new record or deletion of an existing record) must be replicated to the peer nodes in the cluster for maintaining a consistent subscriber profile.
As capacity of an MSC increases, more nodes are added to the cluster. The update and replication workload of the highly dynamic profile records are increased significantly, especially in the case when profile update is required for every call, AR, and other events. To relieve the replication workload, bundling of update