RRC connection setup消息里有一部分不太明白 对着P136页看了半天,RRC connection setup消息里有些内容还是看的不太明白 (从一个主叫的trace里抓出来的) 1. rrc-TransactionIdentifier 0, criticalExtensions criticalExtensionsCorrected1 : criticalExtensionsCorrected2 : r6 : { rrcConnectionSetup-r6 Question: a. criticalExtensions 啥意思?是HSDPA/HSUPA独有的吗?我还没看7,8,9章 b. rrcConnectionSetup-r6 这里的r6是什吗意思? 2. (这是SRB1的Mapping info) rb-MappingInfo { { ul-LogicalChannelMappings oneLogicalChannel : { ul-TrCH-Type dch-rach-usch : { ul-TransportChannelType dch : 32, logicalChannelIdentity 1, rlc-SizeList allSizes : NULL }, mac-LogicalChannelPriority 1 }, dl-LogicalChannelMappingList { { dl-TransportChannelType dch : 32, logicalChannelIdentity 1 } } }, { ul-LogicalChannelMappings oneLogicalChannel : { ul-TrCH-Type dch-rach-usch : { ul-TransportChannelType rach : NULL, logicalChannelIdentity 1, rlc-SizeList explicitList : { { rlc-SizeIndex 1 } } }, mac-LogicalChannelPriority 1 }, dl-LogicalChannelMappingList { { dl-TransportChannelType fach : NULL, logicalChannelIdentity 1 Question: a. 可以看出给了两种mapping方式,一种是上下行用DCH32,还有一种是用FACH和RACH,这是说网络让手机任选一种映射方式吗?同样我看SRB2也一样是有两种映射方式。书里说就主叫而言SRB1~4大多数情况都是映射在在DCH上的, b. ul-TrCH-Type dch-rach-usch这是啥意思,为啥后面给出三种信道(dch,rach,usch),但是下面又是ul-TransportChannelType dch : 32,网络到底让手机用哪个传输信道啊? 3. ul-CommonTransChInfo { modeSpecificInfo fdd : { ul-TFCS normalTFCI-Signalling : complete : { ctfcSize ctfc2Bit : { { ctfc2 0, powerOffsetInformation { gainFactorInformation signalledGainFactors : { modeSpecificInfo fdd : { gainFactorBetaC 15 }, gainFactorBetaD 1 } } }, { ctfc2 1, powerOffsetInformation { gainFactorInformation signalledGainFactors : { modeSpecificInfo fdd : { gainFactorBetaC 12 }, gainFactorBetaD 15 Question: a. 我不明白CTFC2 0,或2 1啥意思,看完第六章还是不明白。RRC connection setup中应该设置的是SRB1~4上行DPDCH和DPCCH的功率,那网络是希望15/11 还是15/12? b. 还需要在确认下以下观点是否正确? Sib5设置RACH中数据与控制部分的功率。 RRC connection setup应该是设置SRB1~4(即专用物理信道承载信令时的功率) DPDCH和DPCCH的功率 RB setup应该是设置RB(即专用物理信道承载业务时)DPDCH和DPCCH的功率 |