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,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2011-12-30,#,单击此处编辑母版标题样式,网优事业部惠州工程培训-切换参数讲解与应用,目录,一、切换定位参数,二、,MSC,切换相关参数,三、定位算法选择,四、,BSC,切换参数,五、滤波器,六、紧急切换参数,七、切换失败相关参数,九、断开连接参数,八、,SDCCH,相关参数,十、各参数取值范围,一,、切换定位参数,Common:,MSTXPWR is the maximum allowed MS output power in a subcell.,defined per subcell.,MS,允许的最大功率,BSPWR is the base station output power on the BCCH frequency.,per cell,and given in relation to a reference point,e.g.as EIRP.,BCCH,参考点功率,BSTXPWR is the base station output power on all frequencies other than,BCCH frequency.It is defined per subcell,and given in relation to a reference,point,e.g.as EIRP.,TCH,参考点功率,MSRXMIN is a threshold for the downlink signal strength from neighbouring,cells,as measured by the MS,for allowing a cell to be eligible as a handover candidate.It is defined per cell.,目标小区下行最小电平,BSRXMIN is the corresponding threshold for the uplink signal strength to,neighbouring cells,as calculated from the downlink measurements.It is,defined per cell,and given in relation to a reference point,e.g.as EIRP.,目标小区上行最小电平,Ericsson1:,MSRXSUFF is a threshold for the downlink signal strength from neighbouring,cells,as measured by the MS,for allowing a cell to be eligible for path lossranking.It is defined per cell.,目标小区下行最小电平,BSRXSUFF is the corresponding threshold for the uplink signal strength to,neighbouring cells,as calculated from the downlink measurements.It is defined per cell,and given in relation to a reference point,e.g.as EIRP.,目标小区下行最小电平,KHYST is the hysteresis for cell borders defined by the signal strength criterion,(K-K borders),i.e.at low signal strength.It is defined as a cell to cell relation,i.e.in each cell it can be defined individually for each neighbour that has been defined for that cell.In the reverse direction,i.e.the opposite relation,KHYST,obtains the same value and is thus a symmetrical relation parameter.,K-K,边界的滞后值,.,LHYST is the hysteresis for cell borders defined by the path loss criterion(L-L,borders),i.e.at high signal strength.It is defined as a cell to cell relation and,is a symmetrical relation parameter.L-L,边界的滞后值,.,TRHYST is the hysteresis for a cell border that is defined by a K-L transition.It,is defined as a cell to cell relation and is a symmetrical relation parameter.K-L,边界的滞后值,.,KOFFSET is used to displace cell borders that are defined as signal strength,criterion(K-K)borders.It is defined as a cell to cell relation,and is an,antisymmetrical relation parameter,i.e.in the opposite relation,KOFFSET,obtains the same absolute value but with opposite sign.K-K,边界的偏值,.,LOFFSET is used to displace cell borders that are defined as path loss,criterion(L-L)borders.It is defined as a cell to cell relation and is an,antisymmetrical relation parameter.L-L,边界的偏值,TROFFSET is used to displace cell borders that are defined by a K-L,transition.It is defined as a cell to cell relation and is an anti-symmetrical,relation parameter.K-L,边界的偏值,.,Ericsson3:,HYSTSEP gives the signal strength level specifying whether serving cell,currently is a low or high signal strength cell.It is defined per cell.效劳小区是否低于或高于此电平,作为参考,高于此值,邻区用HIHYST,低于此值,邻区用LOHYST.,LOHYST is the hysteresis used if serving cell is a low signal strength cell.It is,defined as a cell to cell relation and is a symmetrical relation parameter.,HIHYST is the hysteresis used if serving cell is a high signal strength cell.It is defined as a cell to cell relation and is a symmetrical relation parameter.,OFFSET is used to displace cell borders.It is defined as a cell to cell relation,and is an anti-symmetrical relation parameter.,二、,MSC,切换相关参数,Note These parameters are only defined for Ericsson MSCs.,HNDTCMDINTRA determines the time between the HANDOVER COMMAND,and HANDOVER COMPLETE messages in the MSC at intra-MSC inter-BSC handover(according to T102 in GSM 03.09).,切换命令与切换成功时间间隔。,HNDRELCHINTRA defines the release of the original channel after expiration,of the handover time supervision timer,HNDTCMDINTRA at intra-MSC,inter-BSC handover.The parameter is optional.,切换后是否释放原信道。,0,Terminate the handover and continue the call on the original channel,.,1 the original channel is released,HNDTGSOPINTRA is a time supervision of the switching moment of the group,switch(GS)in the MSC at intra-MSC inter-BSC handover.The timer is started,at sending of the HANDOVER COMMAND message.The path in the GS will,be changed at the first occurrence of one of the following events:,timer expiry,reception of HANDOVER DETECTED from target BSC,reception of HANDOVER COMPLETE from target BSC,If HNDTGSOPINTRA=0,there is no time supervision,which means that the,path in the GS is changed at reception of the HANDOVER DETECTED or,HANDOVER COMPLETE messages.The parameter is only valid and can,only be changed if the time supervision is used to define the operation point of,the GS.The parameter is optional.,HNDSDCCHTCH determines whether inter-MSC/intra-MSC inter-BSC,handover is allowed from a signalling to a traffic channel(=1)or not(=0).The,inter-MSC case is allowed if MAP ve
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