First successful handover

Hi! I've just committed the current state of the handover code to git. What is working so far: * receiving + parsing the measurement reports from both MS and BTS * performing the actual handover process, i.e. allocating / activating the new logical channel on the new BTS, waiting for the ACK, sending handover command to the MS, waiting for HO complete, HO fail or timeout, ... * a minimalistic handover decision making. without any averaging: If we have a cell that's >= 3dB better than the current one, try a handover. What's missing: * switching the actual traffic channel contents (i.e. re-configuring the RTP streams in the ip.access case, or reconfiguring the TRAU mux in E1 case) * better handover algorithm implementation including averaging I'm on a business trip tomorrow, but the code is already seeming to work quite fine, and it looks like: <0400> abis_rsl.c:980 MEASUREMENT RESULT NR=13 RXL-FULL-ul=-47dBm RXL-SUB-ul=-47dBm RXQ-FULL-ul=0 RXQ-SUB-ul=0 BS_POWER=0 L1_MS_PWR= 10dBm L1_FPC=0 L1_TA=0 RXL-FULL-dl=-61dBm RXL-SUB-dl=-56dBm RXQ-FULL-dl=6 RXQ-SUB-dl=4 NUM_NEIGH=1 <0400> abis_rsl.c:1010 ARFCN=868 BSIC=63 => -70 dBm <80000> handover_decision.c:61 process meas res: No better cell <0400> abis_rsl.c:980 MEASUREMENT RESULT NR=14 RXL-FULL-ul=-47dBm RXL-SUB-ul=-47dBm RXQ-FULL-ul=0 RXQ-SUB-ul=0 BS_POWER=0 L1_MS_PWR= 10dBm L1_FPC=0 L1_TA=0 RXL-FULL-dl=-87dBm RXL-SUB-dl=-83dBm RXQ-FULL-dl=6 RXQ-SUB-dl=4 NUM_NEIGH=1 <0400> abis_rsl.c:1010 ARFCN=868 BSIC=63 => -69 dBm <80000> handover_decision.c:61 process meas res: Cell on ARFCN 868 is better, starting handover <80000> handover_logic.c:92 (old_lchan on BTS 0, new BTS 1): <0010> abis_rsl.c:1107 channel=(bts=1,trx=0,ts=2) chan_nr=0x0a CHANNEL ACTIVATE ACK <80000> handover_logic.c:151 handover activate ack, send HO Command <0002> gsm_04_08_utils.c:144 (bts 0 trx 0 ts 2 pd 06) Sending 0x2b to MS. <0010> abis_rsl.c:1107 channel=(bts=1,trx=0,ts=2) chan_nr=0x0a <0010> abis_rsl.c:1082 HANDOVER DETECT access delay = 0 <0010> abis_rsl.c:1107 channel=(bts=1,trx=0,ts=2) chan_nr=0x0a <0010> abis_rsl.c:1082 HANDOVER DETECT access delay = 0 <0001> abis_rsl.c:1396 channel=(bts=1,trx=0,ts=2) chan_nr=0x0a sapi=0 ESTABLISH INDICATION <0001> abis_rsl.c:1396 channel=(bts=1,trx=0,ts=2) chan_nr=0x0a sapi=0 DATA INDICATION <0008> gsm_04_08.c:1595 HANDOVER COMPLETE cause = Normal event <0002> handover_logic.c:203 lchan (bts=0,trx=0,ts=2,ch=0) decreases usage to: 0 Regards, Harald -- - Harald Welte &lt;laforge(a)gnumonks.org&gt; http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)