Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 1 | msc { |
| 2 | hscale=2; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 3 | ms [label="MS"], bts [label="BTS"], bsc[label="BSC"], bsc_lchan[label="BSC lchan FSM"], |
| 4 | bsc_gscon[label="BSC conn FSM"], msc_[label="MSC"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 5 | |
| 6 | ms note bsc_gscon [label="various lchan release scenarios"]; |
| 7 | |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 8 | ms rbox msc_ [label="MSC releases"]; |
| 9 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_ACTIVE"]; |
| 10 | bsc_gscon abox bsc_gscon [label="ST_ACTIVE"]; |
| 11 | bsc_gscon <= msc_ [label="BSSMAP Clear Command"]; |
| 12 | bsc_gscon abox bsc_gscon [label="ST_CLEARING"]; |
| 13 | bsc_gscon => msc_ [label="BSSMAP Clear Complete"]; |
| 14 | bsc_gscon -> bsc_lchan [label="LCHAN_EV_RELEASE"]; |
| 15 | --- [label="IF SAPIs besides SAPI[0] are active"]; |
| 16 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nSAPIS_RELEASED\nT3109"]; |
| 17 | bts <= bsc_lchan [label="RSL Release Request (Local End)..."]; |
| 18 | bts <= bsc_lchan [label="...for each SAPI, except link_id=0"]; |
| 19 | ms <= bsc_lchan [label="RR Channel Release"]; |
| 20 | bts <= bsc_lchan [label="RSL Deactivate SACCH",ID="if appropriate pchan"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 21 | ...; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 22 | bts => bsc_lchan [label="RSL Release ACKs"]; |
| 23 | --- [label="END: SAPIs besides SAPI[0] are active"]; |
| 24 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nBEFORE_RF_RELEASE\nT3111"]; |
| 25 | bsc_lchan -> bsc_gscon [label="GSCON_EV_FORGET_LCHAN"]; |
| 26 | bsc_gscon note bsc_gscon [label="has already forgotten the lchan above."]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 27 | ...; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 28 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nRF_RELEASE_ACK\n4s"]; |
| 29 | bts <= bsc_lchan [label="RSL RF Channel Release"]; |
| 30 | ...; |
| 31 | bts => bsc_lchan [label="RSL RF Channel Release ACK"]; |
| 32 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_UNUSED"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 33 | ...; |
| 34 | ...; |
| 35 | |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 36 | ms rbox msc_ [label="BSC releases, outside of conn FSM's flow"]; |
| 37 | bsc -> bsc_lchan [label="LCHAN_EV_RELEASE"]; |
| 38 | --- [label="IF SAPIs besides SAPI[0] are active"]; |
| 39 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nSAPIS_RELEASED\nT3109"]; |
| 40 | bts <= bsc_lchan [label="RSL Release Request (Local End)..."]; |
| 41 | bts <= bsc_lchan [label="...for each SAPI, except link_id=0"]; |
| 42 | ms <= bsc_lchan [label="RR Channel Release",ID="if conn is present"]; |
| 43 | bts <= bsc_lchan [label="RSL Deactivate SACCH",ID="if appropriate pchan"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 44 | ...; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 45 | bts => bsc_lchan [label="RSL Release ACKs"]; |
| 46 | --- [label="END: SAPIs besides SAPI[0] are active"]; |
| 47 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nBEFORE_RF_RELEASE\nT3111"]; |
| 48 | bsc_lchan -> bsc_gscon [label="GSCON_EV_FORGET_LCHAN"]; |
| 49 | bsc_gscon note bsc_gscon [label="conn FSM notices that its primary lchan is gone"]; |
| 50 | bsc_gscon => msc_ [label="BSSMAP Clear Request"]; |
| 51 | bsc_gscon abox bsc_gscon [label="ST_WAIT_CLEAR_CMD"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 52 | ...; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 53 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nRF_RELEASE_ACK\n4s"]; |
| 54 | bts <= bsc_lchan [label="RSL RF Channel Release"]; |
| 55 | ...; |
| 56 | bts => bsc_lchan [label="RSL RF Channel Release ACK"]; |
| 57 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_UNUSED"]; |
| 58 | ...; |
| 59 | bsc_gscon <= msc_ [label="BSSMAP Clear Command"]; |
| 60 | bsc_gscon abox bsc_gscon [label="ST_CLEARING"]; |
| 61 | bsc_gscon => msc_ [label="BSSMAP Clear Complete"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 62 | ...; |
| 63 | ...; |
| 64 | |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 65 | ms rbox msc_ [label="MS releases"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 66 | ms => bts [label="DISC"]; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 67 | bts => bsc_lchan [label="RLL Release Ind..."]; |
| 68 | bts => bsc_lchan [label="...for each SAPI"]; |
| 69 | bsc_lchan note bsc_lchan [label="The lchan FSM notices when all SAPIs have been released"]; |
| 70 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nBEFORE_RF_RELEASE\nT3111"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 71 | ...; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 72 | bsc_lchan abox bsc_lchan [label="LCHAN_ST_WAIT_\nRF_RELEASE_ACK\n4s"]; |
| 73 | bts <= bsc_lchan [label="RSL RF Channel Release"]; |
| 74 | bsc_lchan -> bsc_gscon [label="GSCON_EV_FORGET_LCHAN"]; |
| 75 | bsc_gscon note bsc_gscon [label="conn FSM notices that its primary lchan is gone"]; |
| 76 | bsc_gscon => msc_ [label="BSSMAP Clear Request"]; |
| 77 | bsc_gscon abox bsc_gscon [label="ST_WAIT_CLEAR_CMD"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 78 | ...; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 79 | bts => bsc_lchan [label="RSL RF Channel Release ACK"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 80 | ...; |
Neels Hofmeyr | 44fcc9f | 2018-05-28 14:29:49 +0200 | [diff] [blame^] | 81 | bsc_gscon <= msc_ [label="BSSMAP Clear Command"]; |
| 82 | bsc_gscon => msc_ [label="BSSMAP Clear Complete"]; |
Neels Hofmeyr | 9d8d0c6 | 2018-05-29 02:45:07 +0200 | [diff] [blame] | 83 | } |