TelecomStudy18

During a call connection, a burst can easily be lost when the mobile station happens to be located in a fading dip for that particular frequency, or if it is subjected to interference. The coding and interleaving scheme in GSM is constructed so that loss of a single burst has minimal influence on the speech quality. The probability that several bursts within a speech frame have poor signal quality is reduced if the bursts are transmitted on different paths. This can be done by using antenna hopping. With antenna hopping, transmit diversity is introduced by changing transmit antenna between bursts.                                                   Schematic picture of antenna hopping This transmit diversity scheme mimics frequency hopping in the sense that the fading changes rapidly between bursts due to transmission through different paths. From a subs...

Measurement Result Recording (MRR ) is a tool for measuring the radio characteristics of the connections between MSs and the network. MRR records information on the radio characteristics of the dedicated channels and calculates statistics on the data recorded. MRR utilises the data that the BSC receives from the BTS in Measurement Results. These data include the results of the measurements performed by both the BTS and the MS. The purpose of the feature is to provide the operator with a facility for compiling statistics on the radio interface. The feature makes it easier for the operator to supervise the radio network. It also makes it possible for the operator to determine correlations within the collected data. The MRR application can be used for: Supervision of the network performance Troubleshooting of the network Comparison of the network performance before and after a change is made to the network MRR is a feature in the Operation and Support System ...

Parameter Name Parameter Description Default Value Cdma2000CellRelationId The value component of the Relative Distinguished Name (RDN). externalCdma2000CellRef Reference to a ExternalCdma2000Cell. includeInSystemInformation Indicates if the CDMA2000 cell referred to is included in System Information. When the includeInSystemInformation is set to false, the CDMA2000 cell is not  included in SIB8. A maximum of 32 CDMA2000 cells can be included in SIB8. true freqCdma Identifies the carrier frequency within a CDMA2000 Band. Cdma2000FreqId The value component of the Relative Distinguished Name (RDN). reservedBy Contains a list of MO instances that reserve this MO instance. Cdma2000FreqBandId The value component of the Relative Distinguished Name (RDN). ...

Parameter Name Parameter Description Default Value AnrFunctionId The value component of the Relative Distinguished Name (RDN). cellAddRankLimitEutran Threshold value for reported rank for a cell to be automatically added as neighbor. 1 cellAddRsrpOffsetEutran Threshold offset value for reported power for a cell to be automatically added as neighbor. -10 cellAddRsrpThresholdEutran Threshold value for reported power for a cell to be automatically added as neighbor. -1440 cellAddRsrqOffsetEutran Threshold offset value for reported quality for a cell to be automatically added as neighbor. -10 cellAddRsrqThresholdEutran Threshold value for reported quality for a cell to be automatically added as neighbor. -1920 hoAllowedEutranPolicy Starting value of the attribute isH...

Parameter Name Parameter Description Default Value PagingId The value component of the RDN. maxNoOfPagingRecords The maximum allowed number of paging records included in one Radio Resource Control (RRC) paging message. It is the allowed maximum number of UE that can be paged per paging occasion. 3 defaultPagingCycle The paging cycle (also referred to as T) used by the RBS and broadcast in system information type 2. If the UE-specific Discontinuous Reception (DRX) cycle is provided in S1AP paging and has a smaller value than defaultPagingCycle, the UE-specific DRX cycle overrides defaultPagingCycle. 128 nB Used to calculate the number and position of Paging Occasions (PO) and Paging Frames (PF). The numerical value of nB depends on the value of the defaultPagingCycle (T) and can be set to one of the following values: 4T, 2T, T, 1/2T,1...

Parameter Name Parameter Description Default Value paArpOverride Allocation Retention Priority level received from the Core Network that eNB interprets as the identifier for Privileged Access. The value zero will disable Privileged Access ARP override. 7 ulNonGbrRatio This parameter sets the wanted uplink resource utilization ratio of Non-GBR bearers, e.g. for Mobile Broadband users, on transport network. The value given in this parameter specifies the Non-GBR part of the total bandwidth and the remaining part (1-ulNonGbrRatio) sets the GBR part of the total bandwidth. The parameter will be used by the Admission Control to balance GBR and Non-GBR use of resources. 500 dlNonGbrRatio This parameter sets the wanted downlink resource utilization ratio of Non-GBR bearers, e.g. for Mobile Broadband users, on transport network. The value given in this parameter specifie...