6. Applications of 4G
A. Multimode Software Application: 4G technology has an unique application
of accessing several wireless networks. It is capable of high level of
customization at the user-level end. This feature integrates the infrastructure of
Emerging Fields in 4G Technology, its Applications & Beyond-An Overview 255
all available networks and steadily it will be easier for users to access services
and applications regardless of the environment. One can easily access different
mobile and wireless networks simultaneously. Multimode software is a
software that allows the user device to adapt itself to various wireless interfaces
networks in order to provide constant net access with high data (packet based)
rate. Figure 3 shows how multiple networks are accessed through multimode
operation. All the networks will be compatible once the switch is completed,
eliminating roaming and areas where only one type of phone is supported.
Once the voice and data networks are superposed there will suddenly be
millions of new devices on the network cloud. This will require either
reconstruction of the address space for the entire Internet or using different
address spaces for the existing wireless networks. The multimode device
architecture may improve call completion and expand effective coverage area.
[2]
B. Video Network Coding for 4G Wireless networks: High Definition (HD)
demand is increasing day by day more than that of the bandwidth support
available. Network Coding allows to reduce the required number of packets to
complete a transmission over noisy or unreliable networks compared non coded
version, hence increasing throughput. Network coding offers exciting
possibilities for the efficient transmission of video over wireless and bottleneck
networks [1]. By sending combinations of packets and considering traffic as
algebraic information not just bits, 4G network is ideally suited to Network
Coding i.e. they are resources, need to serve a variety of different devices and
femto cells connected to WIFI. However, it is also noted that the complexities
that Network Coding can face in decoding nodes can accelerate the capabilities
of embedded systems. This problem can be discarded by use of codes defined
on small Galois Fields (GF). Thus, it is inferred that Network Coding could be
doing peer to peer high definition video streaming and also thereby can be
incorporated into more consumer-oriented devices. In the next section, the
proposed strategy for Video Centric Network Coding has been briefly
portrayed.[3]