HKT has made investment for completing the VoLTE network migration.
This project involves migration of IMS and CS domains, including the core 2G, 3G, 4G and IMS home subscriber server (HSS).
Telecom network vendor Huawei completed the migration of 2G, 3G and 4G CN and cutover of data of subscribes as well as VoLTE and CSFB services to its newly built CN – in two days.
Following the acquisition of CSL for an estimated share of over 40 percent in the Hong Kong wireless market, HKT faced challenges such as rapid network convergence without affecting subscribers, appropriate asset configuration, and Opex reduction.
During the migration, Huawei used Mediation caching for service data updates from terminals and provisioning systems to migrate the 2G, 3G, 4G and IMS HSS without losses or external assistance. This success is reflected in a stably running CN with normal KPIs, including registration success, call completion, and call drop rate.
Huawei and HKT plan to deploy the LTE900 solution for better VoLTE service experience among 4G subscribers. Using ICS architecture to migrate existing 2G/3G subscribers to 4G networks, Huawei and HKT will succeed in both VoLTE commercialization and spectrum resource release for LTE service development.
Peter Lam, managing director of HKT’s Engineering, said: “The migration is a significant milestone in our efforts to present a mobile platform for network evolution and service excellence. Everyone has worked diligently as an indispensable part of one team towards building the one core network.”
“The network migration project required the convergence of packet switched, circuit switched and IMS domains. The huge amount of data involved and the tight timeframe made network migration extremely challenging,” said Wang Yongde, vice president of Huawei’s Core Network Product Line.