cellchangeorder是在什么情况下发的信令
推荐回答(1个)
CCO是通过 MobilityFromEUTRACommand这条消息触发的,在36.331里有描述:宿,通信企业黑名单0X-I"O+]0K&H$a,p$`
该流程的目的是,将处于RRC_CONNECTED状态下的UE移动至使用另一种接入技术的小区,例如GERAN,UTRA或者CDMA2000系统。该流程包含两种方式
Handover:MobilityFromEUTRACommand消息中包含已经分配给UE用于目标小区的资源;
cell change order:MobilityFromEUTRACommand消息中包含目标小区的接入和连接建立信息,例如系统信息。cell change order仅用于GERAN。
Mobility from E-UTRA流程当SRBs建立后,或者DRBs也建立后,可以被使用。
E-UTRAN在UE处于RRC_CONNECTED状态时会触发该过程,可能是在收到MeasurementReport消息后。只有当AS安全激活后,E-UTRA才会触发该流程。
UE能够接收MobilityFromEUTRACommand 消息,并能够向 GERAN发送一个小区变换命令,甚至在目标小区还没有预先的UE测量。
All instances of the PACKET NEIGHBOUR CELL DATA message form a complete container for a certain neighbour cell. The container is addressed by a container identity (CONTAINER_ID) in each instance and optionally by the ARFCN for BCCH and the BSIC of the neighbour cell. The CONTAINER_ID shall then be included in the PACKET CELL CHANGE CONTINUE or the PACKET CELL CHANGE ORDER message together with the ARFCN and the BSIC. This is in order to map the cell identity to the container identity for which neighbour cell information was received in the PACKET NEIGHBOUR CELL DATA messages. If the ARFCN and BSIC are given for a set of PACKET NEIGHBOUR CELL DATA messages, it is sufficient to include this information in only one instance in the set.
所有的PACKET NEIGHBOUR CELL DATA消息实例从一个完整的容器到某一个邻小区,这个容器通过一个容器身份ID(CONTAINER_ID)来识别(定位)的,并且BCCH的 ARFCN和邻小区的BSIC是可选的,这个CONTAINER_ID 将与ARFCN 和 BSIC一起被包含在PACKET CELL CHANGE CONTINUE或者PACKET CELLCHANGE ORDER消息中。这是为了接收PACKET NEIGHBOUR CELL DATA消息时识别相应邻小区的容器身份。如果PACKET NEIGHBOUR CELL DATA 消息中携带ARFCN and BSIC,对于一个子集来说,这些信息就足够了。
When the mobile station receives the PACKET CELL CHANGE ORDER or the PACKET CELL CHANGE CONTINUE message the mobile station shall transmit a PACKET CONTROL ACKNOWLEDGMENT message in the specified uplink radio block if a valid RRBP field is received as part of the message; the mobile station may then switch to a new cell. If the mobile station has collected all required instances of the PACKET NEIGHBOUR CELL DATA message for the new cell already when in the old cell, then it may perform access depending on whether the PACKET PSI STATUS (or PACKET SI STATUS if PBCCH is not supported in the new cell) procedures are supported by the network in the new cell (see below). The required instances of the PACKET NEIGHBOUR CELL DATA message include PSI1, a consistent set of PSI2 messages and PSI14 (if the new cell has a PBCCH allocated) or SI3, SI13 and, if available, SI1 messages (if the new cell does not have a PBCCH allocated). If the MS is able to decode the first SI message contained in the set of PACKET NEIGHBOUR CELL DATA messages but it was not the SI1 message, the MS shall conclude that SI1 is not broadcast in that particular cell in determining when packet access is allowed in the cell (see sub-clause 5.5.1.3).)b9u2L:K)X)L.P7t4w+U%f
当移动终端收到PACKET CELL CHANGE ORDER或者 PACKET CELL CHANGE CONTINUE消息。如果一个可用的RRBP被接收,移动终端将在指定的上行无线资源块传输PACKET CONTROL ACKNOWLEDGMENT消息, 。之后移动终端将转换一个新的小区。当还处于旧小区时,如果终端收集到新小区需要的PACKET NEIGHBOUR CELL DATA消息,它将进行随机接入取决于是否PACKET PSI STATUS(或者PACKET SI STATUS《如果在PBCCH在新小区不支持的话》)。PACKET NEIGHBOUR CELL DATA实例需求包含PSI1,"x6i6n5X6e:c2G
PSI2和PSI14组成的消息集合(如果新小区的PBCCH被分配的话),或者SI3,SI13,并且如果是可得到的话,还包含SI1消息(如果新小区的PBCCH没有被分配的话)。如果第一个包含在PACKET NEIGHBOUR CELL DATA消息集里的SI消息,但是其并不是SI1消息的话,当包接入在小区被允许的话。MS在特殊小区将不广播SI1。移动通信,通信工程师的家园,通信人才,求职招聘,网络优化,通信工程,出差住宿,通信企业黑名单9^,g)g1|7W'S
NACC:mscbsc 移动通信论坛拥有30万通信专业人员,超过50万份GSM/3G等通信技术资料,是国内领先专注于通信技术和通信人生活的社区。%z9C1g%k8W8s5w&~$m0Z
NACC 由2个独立的过程构成: | 国内领先的通信技术论坛+Y/m%F;n"z:P
1、 协助移动台在数据传输模式或者MAC共享状态得到GSM邻小区的系统消息,这个系统消息用例初始化数据包的接入
2、 移动终端通知网络其要重选到另外一个GSM小区,3G小区或者E-UTRAN小区且延迟小区重选(CCN),让网络响应邻小区系统消息
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