Recently mobile operators began to deploy 3G networks. 3G technologies include High-Speed Downlink Packet Access (HSDPA), allowing for high-speed data services equivalent to broadband fixed lined bandwidths.

We are also seeing enhance 3G networks which will utilise Wideband Code Division Multiple Access (W-CDMA) offering speeds up to 14 megabits per second, and High-Speed Packet Access (HSPA), which can provide download speeds of up to 42 megabits per second. Future 4G systems will be able to provide a comprehensive IP solution where voice, data, and streamed multimedia can be given to subscribers on an "Anytime, Anywhere" basis, and at higher data rates than previous mobile generations.

Building the mobile evolved packet core for will involve a variety of factors that need to be considered to ensure the packet core network meets the service requirements, is scalable, has the necessary network resiliency, whilst being cost effective. The packet core must also meet any QoS and traffic engineering objectives for delay-tolerant data traffic, as well as real-time voice traffic. Path computation and traffic engineering solutions will have a big impact on service delivery and network efficiency.