Cell Reservation Access Restrictions 标签(空格分隔): Cell_Reservation SIB3 SIB4
0.概述 在UTRA cells主要是两种机制来设置Cell reservation或者Access restrications. - 限制当前cell reservation状态来控制cell selection和cell reselection; - 透过显示Access Class来控制和限制不同class的用户来发起不同的服务;
无论上述哪种机制,都需要透过小区的系统消息3或者系统消息4来广播当前cell reservation状态,如下:
CellAccessRestriction ::= SEQUENCE { cellBarred CellBarred, cellReservedForOperatorUse ReservedIndicator, cellReservationExtension ReservedIndicator, – NOTE: IE accessClassBarredList should not be included if the IE CellAccessRestriction – is included in the IE SysInfoType4 accessClassBarredList AccessClassBarredList OPTIONAL } 如果是第二种机制,还需要从USIM卡中获取当前卡的Access control class(EFacc)信息, 参考TS 22.011 Service accessibility.
1.Cell Reservation 认识IE: CellBarred CellBarred ::= CHOICE { barred SEQUENCE { intraFreqCellReselectionInd AllowedIndicator, t-Barred T-Barred }, notBarred NULL } cellReservedForOperatorUse cellReservationExtension ReservedIndicator ::= ENUMERATED { reserved, notReserved } Tbarred:单位应是miliseconds.
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