吐血推荐：GSM网络切换的几种因素！虽然是英文的但很有用。[原创]

LXQ2025

2(HO-1)        AV_RXQUAL_UL_HO > L_RXQUAL_UL_H + OFFSET_RXQUAL_FH
        and AV_RXLEV_UL_HO <= RXLEV_UL_IH
        and MS_TXPWR = min(P, MS_TXPWR_MAX)
        and EN_RXQUAL_UL = ENABLE
       
3(HO-2)        AV_RXQUAL_UL_HO <= L_RXQUAL_UL_H + OFFSET_RXQUAL_FH
        and AV_RXLEV_UL_HO < L_RXLEV_UL_H
        and MS_TXPWR = min(P, MS_TXPWR_MAX)
        and EN_RXLEV_UL = ENABLE
       
4(HO-3)        AV_RXQUAL_DL_HO > L_RXQUAL_DL_H + OFFSET_RXQUAL_FH
        and AV_RXLEV_DL_HO <= RXLEV_DL_IH
        and BS_TXPWR = BS_TXPWR_MAX
        and EN_RXQUAL_DL = ENABLE
       
5(HO-4)        AV_RXQUAL_DL_HO <= L_RXQUAL_DL_H + OFFSET_RXQUAL_FH
        and AV_RXLEV_DL_HO < L_RXLEV_DL_H
        and BS_TXPWR = BS_TXPWR_MAX
        and EN_RXLEV_DL = ENABLE
       
6(HO-5)        AV_RANGE_HO > U_TIME_ADVANCE
        and EN_DIST_HO = ENABLE
       
7(HO-20)        last N_BAD_SACCH consecutive SACCH frames are not correctly received
        and EN_MCHO_RESCUE = ENABLE
       
10(HO-15)        AV_RXLEV_UL_HO < RXLEV_UL_ZONE
        and MS_TXPWR = min(P, MS_TXPWR_MAX_INNER)
       
11(HO-16)        AV_RXLEV_DL_HO < RXLEV_DL_ZONE
        and BS_TXPWR = BS_TXPWR_MAX_INNER
       
15(HO-8)        AV_RXQUAL_UL_HO > L_RXQUAL_UL_H + OFFSET_RXQUAL_FH
        and AV_RXLEV_UL_HO > RXLEV_UL_IH
        and EN_INTRA_UL = ENABLE
        and ( no previous intracell handover for this connection failed
        or EN_INTRACELL_REPEATED = ENABLE ).
       
16(HO-9)        AV_RXQUAL_DL_HO > L_RXQUAL_DL_H + OFFSET_RXQUAL_FH
        and AV_RXLEV_DL_HO > RXLEV_DL_IH
        and EN_INTRA_DL = ENABLE
        and (no previous intracell handover for this connection failed
        A or EN_INTRACELL_REPEATED = ENABLE )
       
17(HO-18)        AV_RXLEV_UL_MCHO(i) &pound; U_RXLEV_UL_MCHO
        and AV_RXLEV_UL_MCHO(i-1) > U_RXLEV_UL_MCHO
        and EN_MCHO_H_UL = ENABLE
       
18(HO-19)        AV_RXLEV_DL_MCHO(i) &pound; U_RXLEV_DL_MCHO
        and AV_RXLEV_DL_MCHO(i-1) > U_RXLEV_DL_MCHO
        and EN_MCHO_H_DL = ENABLE
       
22(HO-23)        AV_RANGE_HO &pound; L_TIME_ADVANCE
       
12(HO-6)        If EN_TRAFFIC_HO(0,n)=ENABLE
(HO-7)        then PBGT(n) > HO_MARGIN(0,n) + OFFSET_HO_MARGIN_INNER
        + max(0, DELTA_HO_MARGIN(0,n)) (n=1...BTSnum)
        else PBGT(n) > HO_MARGIN(0,n) + OFFSET_HO_MARGIN_INNER
        and AV_RXLEV_PBGT_HO &pound; RXLEV_LIMIT_PBGT_HO
        and EN_PBGT_HO = ENABLE
        with PBGT(n) = AV_RXLEV_NCELL(n) - AV_RXLEV_PBGT_HO
        - (BS_TXPWR_MAX - AV_BS_TXPWR_HO)
        - (MS_TXPWR_MAX(n) - MS_TXPWR_MAX)
        - PING_PONG_MARGIN(n,call_ref)
       
(HO-6bis)        PBGT(n) > HO_MARGIN(0,n) (n=1...BTSnum)
        and AV_RXLEV_PBGT_HO &pound; RXLEV_LIMIT_PBGT_HO
        and EN_PBGT_HO = ENABLE
       
       
       
       
       
       
       
       
       
13(HO-17)        AV_RXLEV_UL_HO > RXLEV_UL_ZONE + ZONE_HO_HYST_UL +
        (MS_TXPWR - MS_TXPWR_MAX_INNER)+ PING_PONG_MARGIN(0, call_ref)
        and AV_RXLEV_DL_HO > RXLEV_DL_ZONE + ZONE_HO_HYST_DL +
        BS_TXPWR - BS_TXPWR_MAX_INNER+ PING_PONG_MARGIN(0, call_ref)
        and AV_RXLEV_NCELL_BIS(n) &pound; NEIGHBOUR_RXLEV(0,n)
        and EN_BETTER_ZONE_HO = ENABLE
       
14(HO-21)        AV_RXLEV_NCELL(n) > L_RXLEV_CPT_HO(0,n) n = (1...BTSnum)
        and MS_SPEED = slow
        and EN_MCHO_NCELL = ENABLE
       
       
       
       
       
       
       
       
20(DR-1)        AV_RXLEV_NCELL_DR(n) > L_RXLEV_NCELL_DR(n) ( n = 1 ... BTSnum )
        and EN_FORCED_DR = ENABLE
       
21(HO-22)        Traffic_load(0) = MULTIBAND_TRAFFIC_CONDITION
        and Traffic_load(n) <> high
        and AV_RXLEV_NCELL(n) > L_RXLEV_CPT_HO(0,n) + max(0,[MS_TXPWR_MAX(n)-P])
        and EN_PREFERRED_BAND_HO = ENABLE
       
23(HO-24)        DELTA_HO_MARGIN(0,n) < 0dB
        and PBGT(n) > HO_MARGIN(0,n) + OFFSET_HO_MARGIN_INNER +DELTA_HO_MARGIN(0,n)
        (n=1...BTSnum)
        and EN_TRAFFIC_HO(0,n) = ENABLE
       
24(HO-25)        Traffic_load(0) = CAPTURE_TRAFFIC_CONDITION
        and Traffic_load(n) <> high
        and AV_RXLEV_NCELL(n) > L_RXLEV_CPT_HO(0,n) +
        max(0,[MS_TXPWR_MAX(n)-P])
        and EN_GENERAL_CAPTURE_HO = ENABLE