 element. A centralized SON solution is a preferred SON solution for optimization solutions that may impact the functioning of more than one network element. Optimization results can be stored in a configuration database and, upon completion, can be automatically distributed toward the impacted eNodeBs (network elements). However, centralized SON restricts the possibility of quicker optimizations and SON adaptation, as there will be lag time in the network elements reporting the problem to the element manager and the central SON server applying the optimization algorithms. CHAPTER 2 SELF-ORGANIZING NETWORKS IN LTE DEPLOYMENT Many vendors have a common optimization for simultaneous operation across multiple radio technologies. This can be a huge advantage, wherein joint optimization of LTE and GSM or WCDMA will be possible in an efficient way for these vendors. A centralized solution is preferred for the following LTE optimization features: Physical cell identity management Neighbor cell relation optimization Interference reduction optimization Coverage and capacity optimization Handover optimization and load balancing optimization Radio optimizations, like RACH optimization Distributed SON In distributed SON, the optimization algorithms reside not at the network or element management system level, but at the network element level (i.e., eNodeB). The SON functionality and the optimization algorithm are not necessarily at a high level but can reside in many locations or network elements (e.g., eNodeB). This makes the deployment and optimization activities quite complex, especially when there is a requirement for multiple network elements to coordinate with one another as part of a solution. However, for simpler cases with two or fewer network elements being impacted, it is more effective to approach this optimization or solution with a distributed SON model. Because the distributed SON solution resides at a relatively low level, the optimization algorithms can be executed much faster when compared with that for the