Broadband Wireless Access (BWA) has become very popular in recent wireless standards. Mobile Multi-Hop (MMR) networks are one of the suitable solutions to achieve the broadband internet access. There are various issues unsolved with MMR networks. In this paper, we have discussed the issues related to L1 (physical layer), L2 (Medium Access Control (MAC)) layers. Orthogonal Frequency Division Multiple Access (OFDMA), Multi Input Multi Output (MIMO), antenna selection are the major issues related to the physical layer. Scheduling, link adaptation, handover management, interference management, path selection are the issues related to the MAC layer. This paper also highlights the importance of optimal Base Station (BS) and Relay Station (RS) deployment. © Research India Publications.