LTE-Advanced Relay



LTE-Advanced Relay



   Basic System Model For Multi-User System.png


Relay case with One cell Base Station and Multiple UE.png



            Long Term Evolution (LTE) technology is the most efficient the most efficient mobile broadband technology

             for providing an excellent user experience. It offers the highest data rates and shortest latency times.

            Relay transmission can be seen as a kind of collaborative communications, in which a relay station (RS) helps

            to forward user information from neighboring user equipment (UE)/mobile station (MS) to a local eNode-B (eNB)/

            base station (BS). Relays that receive and retransmit the signals between base stations and mobiles can be used

            to effectively  increase throughput extend coverage of cellular networks.Relaying enhances coverage and capacity.

            The UEs communicate with the relay node, which in turn communicates with a donor eNB.






           - Simple and inexpensive functions 
           - Minimal impact on standard specifications
             (specifications on repeater performance defined in Release 8)
           - Noise Amplification simultaneously with desired signals. 






           - Elimination of Noise


           - Processing delay due to modulation/de-modulation

             and encoding and decoding

           - Radio control functions must be added between

             base station and relay station








          - Elimination of noise
          - Small impact on standard specifications
         -  Processing delay due to modulation/demodulation and

            encoding and decoding
         - Layer 3 processing delay (user-data regeneration
           processing etc.)



Paper             Smart Cooperative Relay Scheme in LTE-Advanced System