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ID:38257713
大小:347.50 KB
页数:15页
时间:2019-06-07
《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
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