LTE_Radio_Network_Configuration_L12学习资料.pptVIP

Overview and objectives RBS Configuration Phases Logical components of an LTE RBS Site Equipment Configuration for Radio/SECTOR Overview EPS Bearer Idle Mode Behavior: PLMN Cell Selection Idle Mode Behavior: Camp Normally Radio Connection Supervision Capacity Management (Admission Control) Capacity Management (Congestion Control) Automated Neighbor Relation Inter Frequency and IRAT Handover CS Fallback to WCDMA or GSM Radio Network Managed Object Model EUtranCellFDD or EUTRANCellTDD Quality of Service Framework MOs related to QoS configuration * To be able to able to interwork with the other radio access technologies (in other words, for Inter RAT handovers), the other systems and their cells must also be defined in the RBS. As the figure shows, it is possible to interwork with the CDMA2000 networks, UTRAN (3G) networks and also to the GERAN (GSM or 2G) networks. Managed Objects related that identify these relations are defined under (or from) the EUtranCellFdd or EUtranCellTdd. * The mapping for a specific QCI entry to a DSCP value can be changed by editing some parameters in the MOs listed here. It should also be noted that the default values of the QCI-related attributes generally ensure smooth operation, but it is possible for the operator to change some attributes to optimize performance. QCI relates to the Data Radio Bearer (DRB); consequently, the Signaling Radio Bearer (SRB) is not affected by QciTable MO’s. The operators view of the QCI to DSCP (which influences the transport network QoS concept) mapping may differ from that of the default values. If so, the operator can change the value of the dscp attributes to better reflect that view of the relationship between QCI and DSCP. * While DSCP (6-bits, 64 combinations) is a QoS providing mechanism in the IP layer, P-bit (with 3-bits, 8 combinations) handles traffic prioritization in the Ethernet layer by mapping the traffic to various (upto 8) queues that vave different priorities in the outgoing (e