SW1_Training_LogAnalysis_GAP.ppt

log analysis series - gap,confidential,sw1/l1c,t3g technology company,2,revision history,t3g technology company,3,approval,content,basic flow introduction check points introduction typical issues analysis others,confidential,4,part1,basic flow introduction,confidential,gap overview,gap-get available plmn initiation: nas requests rr to report all plmns currently available. user request or; a timer expiry in nas the periodic power campaign timer expires in limited service mode nas asks rr to camp on a cell belonging to hplmn,confidential,6,gap overview,gap type (from implementation) gap when lcr camped lcr gap when lcr camped; gsm gap when lcr camped; gap when gsm camped lcr gap when gsm camped; gsm gap when gsm camped;,confidential,7,gap flow-gap when lcr camped,confidential,8,gap flow-gap when gsm camped,confidential,9,gap flow- lcr gap when lcr camped,cphy_dwpch_detect_req(first time, returnall = false) cphy_dwpch_detect_req(second time) from this, the procedure is similar as ics for l1c cphy_cell_sync_req cphy_cell_sync_ind at most 3 cells and with 0xff to indicate the end cphy_sib_config_req cphy_sib_schedule_req general said, 1 means mib, 2 means sb1 phy_sib_ind need decode mib, sib1/3 to get the suitable information of the cell in the plmn,confidential,10,gap flow- gsm gap when lcr camped,first send cphy_power_req if support multi-band, may need send two power_req couple 1: gsm 900 associated with dcs 1800, couple 2: gsm 850 associated with pcs 1900. 0 means to stop the power champaign then send cphy_multi_ctx_req to bsic verify and si receiving,confidential,11,gap flow- gap when gsm camped,ph_power_req if support multi-band, may need send two power_req couple 1: gsm 900 associated with dcs 1800, couple 2: gsm 850 associated with pcs 1900. then send ph_multi_ctx_req to bsic verify and si receiving ph_umts_psch_power_req/cnf ph_umts_sync_req/ind ph_umts_sib_config_req only read mib, not read sib1/3,confidential,12,gap flow-gap interrupted by cell reselection,gap is background procedure measurement is ongoing if cell reselection happen suspend the gap procedure, and resume if cell reselection finished(success/failure),confidential,13,gap flow-msc,confidential,14,part2,check points introduction,confidential,check points introduction,gap type and result check,confidential,16,check points introduction,lcr gap when lcr camped,confidential,17,check points introduction,lcr gap when gsm camped,confidential,18,part3,typical issues analysis,confidential,typical issues,no search result: gap suspend, do not continue; cant find enough plmn info: can not search the exist cell take too long time: cant finish freq-scan in time; norm