GPRS Qos说明

《GPRS Qos说明》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、QOS1.R97/R98QoSR97/R98QoS（3个字节），包括下列参数：Precedenceclass:优先级Delayclass：延迟等级Reliabilityclass：可靠性Peakthroughputclass：峰值吞吐量Meanthroughputclass：平均吞吐量2.R99QoSR99QoS(11个字节)，保留了原来的3个字节，增加了8个字节，新增如下参数：TrafficClass:业务类型Deliveryorder:传输顺序DeliveryoferroneousSDU:是否传输错误SDUMaximumSDUsize:最大S

2、DU尺寸Maximumbitrateforuplink:上行最大比特率Maximumbitratefordownlink:下行最大比特率ResidualBER:剩余SDU错误率SDUErrorratio:SDU错误率Transferdelay:传输时延Transferhandlingpriority:传输处理优先级Guaranteedbitrateforunlink:保证的上行最大比特率。Guaranteedbitratefordownlink:保证的下行最大比特率3.R5/R6QoSR5/R6QoS(14个字节)，除了原来11个字节后，又增加了

3、3个字节，新增如下参数：SignallingIndicationSourceStatisticsDescriptorMaximumbitratefordownlink(extended)Guaranteedbitratefordownlink(extended)4.QoS字段结构QoSIE结构（informationelementcoded）87654321QualityofserviceIEIoctet1LengthofqualityofserviceIEOctet200spareDelayclassReliabilityclassoctet3

4、Peakthroughput0sparePrecedenceclassoctet4000spareMeanthroughputoctet5TrafficClassDeliveryorderDeliveryoferroneousSDUOctet6MaximumSDUsizeOctet7MaximumbitrateforuplinkOctet8MaximumbitratefordownlinkOctet9ResidualBERSDUerrorratioOctet10TransferdelayTrafficHandlingpriorityOctet11

5、GuaranteedbitrateforuplinkOctet12GuaranteedbitratefordownlinkOctet13000spareSignal-lingIndicat-ionSourceStatisticsDescriptorOctet14Maximumbitratefordownlink(extended)Octet15Guaranteedbitratefordownlink(extended)Octet16Figure10.5.138/3GPPTS24.008:Qualityofserviceinformationele

6、ment5.Allocation/RetentionPriority在Gb/Iu信令中，qos的字节长度如上，但在Gn的信令中，qos中会自动增加1个字节：Allocation/Retentionpriority。Allocation/RetentionPriorityDefinition:specifiestherelativeimportancecomparedtootherUMTSbearersforallocationandretentionoftheUMTSbearer.TheAllocation/RetentionPriorityat

7、tributeisasubscriptionattributewhichisnotnegotiatedfromthemobileterminal.NOTE4:Theadditionofauser-controlledAllocation/RetentionPriorityattributeisforfurtherstudyinfuturereleases.[Purpose:Priorityisusedfordifferentiatingbetweenbearerswhenperformingallocationandretentionofabea

8、rer.Insituationswhereresourcesarescarce,therelevantnetworkelementsca