International Journal of Engineering Research and Applications (IJERA)
Wireless data broadcast is a disseminating data into large number of mobile clients. In many information services, the users may query multiple data items at a time. The environment under consideration is asymmetric in that the information server has much more bandwidth available, as compared to the clients. To maximize the number of downloads given a deadline. It defines a problem called Largest Number Data Retrieval (LNDR). To prove the decision problem of LNDR is a NP hard, and to investigate approximation algorithm for it.