What is carrier aggregation and how this will help in improving bandwidth and throughput? ITU set specific requirements for IMT Advanced compliant technology should fulfill. Some of these requirements include at least 40 MHz bandwidth, peak spectral efficiency of 15 bit/s/Hz in downlink and 6.75 bit/s/Hz in uplink and control plane and user plane latency of less than 100 and (more ..)
LTE logical channels structure and mapping between logical channels and transport channels. Logical channels reside between RLC sublayer and MAC sublayer which are layer 2 protocols in LTE protocol stack. Logical channels tells what kind of information is transferred. Logical channels can be broadly divided into two types: Control Channels (for the transfer of control plane information) Traffic Channels (for (more ..)
RLC is a layer 2 protocol in LTE UE and NodeB. RLC – Radio Link Control protocol is a data link layer protocol. RRC (Radio Resource Control) is generally controls RLC configuration via RRC-RLC SAP. A RLC entity receives/delivers RLC SDUs from/to upper layer and ends/receives RLC PDUs to/from its peer RLC entity via lower layers. If RLC entity configured (more ..)
What is RSRP (Reference Signal Received Power ) in LTE? When RSRP is is applicable in LTE systems? Reference signal received power (RSRP), is defined as the linear average over the power contributions of the resource elements that carry cell-specific reference signals within the considered measurement frequency bandwidth. For RSRP determination the cell-specific reference signals R0 shall be used. If (more ..)
What is RSCP (Received Signal Code Power) in LTE? When is RSCP applicable in LTE system? UTRA FDD CPICH RSCP RSCP (Received Signal Code Power), the received power on one code measured on the Primary CPICH. The reference point for the RSCP shall be the antenna connector of the UE. If Tx diversity is applied on the Primary CPICH the (more ..)
How does paging in LTE work? What are the different situations when LTE UE receives paging from network? Paging in LTE network is used to inform and notify UE about various events. The propose of paging procedure is: To transmit paging information to a UE in RRC_IDLE state. To inform UEs in RRC_IDLE and UEs in RRC_CONNECTED state about a (more ..)
How LTE MAC header is encoded? What are different header elements in LTE MAC header? LTE MAC PDU is a bit string but octet aligned (i.e multiple of 8 bits). A MAC PDU header consists of one or more subheaders. Each subheader corresponds to either a MAC SDU, MAC control element or padding. MAC PDU header can have these six (more ..)