posed. The cellular network architecture of the group cell can take full advantage of the multiantenna technology, and it fits for the advanced technologies in the physical layer to solve the problem of frequent handover results from higher carrier frequency and, consequently, smaller cell coverage. All the avail- able resources in the system based on the group cell are scheduled and allocated © 2009 by Taylor & Francis Group, LLC Long Term Evolution: 3GPP LTE Radio and Cellular Technology uniformly by the system, SO it is easier to optimize the overall resource allocation and avoid the interferences to increase the system capacity and more favorable to use advanced digital signal processing (DSP) technologies to improve the system performance efficiently. In addition, the slide handover can be accomplished by the physical layer adaptively to avoid complex interactive high-level signaling and increase the handover speed. In this way, the user will always be in the center of cell, SO the cell edge effect will be eliminated. The generalized distributed radio access network is a flat and simplified one with high efficiency, where the control plane is apart from the user plane and the radio resources are managed mainly by the control domain. Compared with the network structure currently used, it can reduce the transmission latency of signal- ing and data to improve system performance, meet the requirement of all-IP, and save the cost of network construction. The separation of control plane and user plane simplifies network architecture and the signaling load. The generalized distributed cellular structure enlarges the coverage and fully uses the advantages brought by multiantenna techniques. The slide handover strategy makes users always feel that they are at the center of the cell to avoid cell edge effect and resist intercell interference. 2.2.2.1.1 Generalized Distributed Radio Access Network In a generalized distributed radio access network (RAN), the radio network con- troller (RNC) in the 3G UTRAN (universal te