Under what circumstances did cellchangeorder signal?

CCO is triggered by the message MobilityFromEUTRACommand, which is listed in 36.3 1: blacklist 0x-0x-I "o+]0k &；; A dollar and a penny.

The purpose of this procedure is to move the UE in RRC_CONNECTED state to a cell using another access technology, such as GERAN, UTRA or CDMA2000 system. This process includes two ways.

Handover: the mobilityfromeutracommand message contains the resources that have been allocated to the UE for the target cell;

Cell Change Order: MobilityFromeTracCommand message contains access and connection establishment information of the target cell, such as system information. Unit change orders are only used for GERAN.

Mobility from E-UTRA process can be used after establishing SRBs or DRBs.

When the UE is in RRC_CONNECTED state, E-UTRAN may trigger this process after receiving the MeasurementReport message. Electronic UTRA will trigger this process only when AS security is activated.

Even if there is no previous UE measurement in the target cell, the UE can receive the MobilityFromEUTRACommand message and send a cell change command to GERAN.

Grouping all instances of adjacent cell data messages forms a complete container of an adjacent cell. In each case, the container is addressed by the container identification (CONTAINER_ID), and optionally by the BCCH of the neighboring cell and the ARFCN of the BSIC. Then, the CONTAINER_ID will be included in the packet cell change continue or packet cell change command message together with ARFCN and BSIC. This is to map that cell identity to the contain identity of the adjacent cell information received in the packet adjacent cell data message. If ARFCN and BSIC are given for a group of grouped neighboring cell data messages, it is sufficient to include this information in only one instance in the group.

All instances of packet neighboring cell data messages are from a complete container to an neighboring cell. This container is identified (located) by container ID(CONTAINER_ID), and ARFCN of BCCH and BSIC of neighboring cell are optional. The CONTAINER_ID will be included in the packet cell change continuation or packet cell change order message together with ARFCN and BSIC. This is to identify the container identity of the corresponding neighboring cell when receiving the packet neighboring cell data message. If the packet neighboring cell data message carries ARFCN and BSIC, this information is sufficient for the subset.

When a mobile station receives a packet cell change command or a packet cell change continuation message, if a valid RRBP field is received as a part of the message, the mobile station will send a packet TROL acknowledgement message in a designated uplink radio block; The mobile station can then hand over to a new cell. If the mobile station has collected all required instances of the packet neighboring cell data message of the new cell in the old cell, it can perform access according to whether the network in the new cell supports the packet PSI state (or the packet SI state if PBCCH is not supported in the new cell) (see below). Required examples of grouping neighboring cell data messages include PSI 1, a consistent set of PSI2 messages and PSI 14 (if the new cell is allocated with PBCCH) or SI3, SI 13 and SI 1 messages (if the new cell is not allocated with PBCCH). If the MS can decode the first SI message contained in the data message of the group of packet neighboring cells, but it is not a SI 1 message, when determining when packet access is allowed in this cell, the MS will infer that SI 1 is not broadcast in this particular cell (see sub-clause 5.5. 1.3). )b9u2L:K)X)L.P7t4w+U%f

When the mobile terminal receives a packet cell change command or a message that the packet cell change continues. If an available RRBP is received, the mobile terminal will send a packet control acknowledgement message in the designated uplink radio resource block. After that, the mobile terminal will switch to a new cell. When the terminal is still in the old cell, if it collects the packet neighboring cell data message required by the new cell, it will perform random access according to the packet PSI state (or the packet SI state "if it is not supported by the new cell in PBCCH"). Examples of grouping adjacent cell data require PSI 1, "x6i6n5X6e:c2G.

A message set consisting of PSI2 and PSI 14 (if the PBCCH of the new cell is allocated) or SI3 and SI 13, and if available, it also contains SI 1 messages (if the PBCCH of the new cell is not allocated). If the first SI message is included in the packet neighboring cell data message set, but it is not a SI 1 message, packet access is allowed in the cell. MS will not broadcast SI 1 in the special cell. Mobile communication, home of communication engineers, communication talents, job hunting, network optimization, communication engineering, business accommodation, blacklist of communication enterprises 9, g) G 1 | 7W

NACC:mscbsc Mobile Communication Forum has 300,000 communication professionals and more than 500,000 copies of GSM/3G communication technical materials. It is a leading community in China focusing on communication technology and journalists' life. % z9c 1g % k8w 8s 5w & amp； ~$m0Z

NACC consists of two independent processes: | Domestic leading communication technology forum+Y/M% F; n"z:P

1. Assist the mobile station to obtain the system message of GSM neighboring cells in data transmission mode or MAC*** enjoyment state, and the system message use case initializes the access of data packets.

2. The mobile terminal informs the network that it wants to reselect to another GSM cell, 3G cell or E-UTRAN cell, and delays cell reselection (CCN) so that the network can respond to the system message of neighboring cells.