4G, the next-generation mobile telecommunication system, is the requirement for security enhancement and reliable communication. This paper presents the design of security enhancement techniques for data transmission in LTE networks using TLS. Here AES is used for encryption. AES is enhanced by using Chaos and Dynamic S-box. By the use of chaos the shift rows is made dynamic and the key space is made infinite. S-box is made dynamic and key-dependent using cipher key. Complexity of the system is increased by using AES in round structure. Comparison of the traditional and enhanced AES will be made on the basis of Performance evaluation using Encryption Time, Decryption Time, Overall Time, and Throughput.

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4G; AES; S-box; Round structure; Chaos