LTE eNodeB 硬件介绍.ppt

* * * * * * * * * * * * * * IBBS200D is used in Germany solution * * * * * As the radio access equipment in the LTE system, the eNodeB manages the air interface, provides radio access for LTE subscribers, and performs Radio Resource Management (RRM) functions such as access control, mobility control, and UE resource allocation. Multiple eNodeBs constitute an Evolved Radio Access Network (eRAN) system. The Evolved Packet Core (EPC) consists of MMEs and S-GWs or P-GWs. The MME performs mobility management and session management of UEs. The P-GW processes IP data services, including IP address allocation and billing. The S-GW forwards data between the eNodeB and the P-GW. * CCPIC (Control Channel Parallel Interference Cancellation), is a simplified and practical method of MUD technology Interference cancellation is an important step to improve system performance More gain with load increasing, 1.5dB coverage gain can be improved for heavy load AFC to resolve Doppler Shift Cell Split for handover long way Adjust the AMR 8 coding rate automatically from 4.75 kbps to 12.2 kbps based on the system load Max. 2.2dB gain, or 30% capacity enhancement for voice * * * * * * * * * Control Subsystem The control subsystem manages the entire eNodeB system in terms of OM and signaling processing. The OM includes the configuration management, fault management, performance management, and security management. In signaling processing, the E-UTRAN signaling is processed, which involves the air interface signaling, S1 interface signaling, and X2 interface signaling. Transport Subsystem The transport subsystem provides ports for data communication between the eNodeB and the MME/S-GW. It also provides the OM channel for connection to the Operation and Maintenance Center (OMC). Baseband Subsystem The baseband subsystem consists of the uplink processing module and downlink processing module. The subsystem processes user plane protocols over the air interface, w