From 8c14a942d2c08cc59827b805105794eb576ff2d3 Mon Sep 17 00:00:00 2001 From: Neels Hofmeyr Date: Fri, 21 Sep 2018 14:00:08 +0200 Subject: bsc: document handover Add chapter "Handover", explaining: - intra- and - inter-BSC handover, - HO algorithm 1 and - algorithm 2 - new neighbor configuration Adjust copyright, add revision and add me as author. Change-Id: I7afb3f66c98abda07fc8acc76e00c46091fe55e2 --- doc/manuals/chapters/handover_inter_bsc.dot | 35 +++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 doc/manuals/chapters/handover_inter_bsc.dot (limited to 'doc/manuals/chapters/handover_inter_bsc.dot') diff --git a/doc/manuals/chapters/handover_inter_bsc.dot b/doc/manuals/chapters/handover_inter_bsc.dot new file mode 100644 index 000000000..0cc655401 --- /dev/null +++ b/doc/manuals/chapters/handover_inter_bsc.dot @@ -0,0 +1,35 @@ +digraph G { +rankdir=LR + +subgraph cluster_bss_a { + label="BSS Alpha" + BTS_a0 [rank=min,label="bts 0\nARFCN=1 BSIC=1\nLAC=23 CI=5"] + BTS_a1 [rank=min,label="bts 1\nARFCN=2 BSIC=2\nLAC=23 CI=6"] + BSC_a [label="BSC Alpha"]; + {BTS_a0,BTS_a1} -> BSC_a [arrowhead=none,label=Abis] +} + +subgraph cluster_bss_b { + label="BSS Beta" + BTS_b0 [rank=min,label="bts 0\nARFCN=1 BSIC=3\nLAC=42 CI=3"] + BTS_b1 [rank=min,label="bts 1\nARFCN=2 BSIC=4\nLAC=42 CI=1"] + BSC_b [label="BSC Beta"] + {BTS_b0,BTS_b1} -> BSC_b [arrowhead=none,label=Abis] +} + +MS -> BTS_a1 [label="(3) Measurement:\nARFCN=1 BSIC=3 RXLEV"] +BTS_a1 -> MS [label="(1) my neighbors:\nARFCN=1 BSIC=1\nARFCN=1 BSIC=3"] +BTS_b0 -> MS [label="(2) good RXLEV",style=dotted] +MS -> {BTS_a0,BTS_b0,BTS_b1} [style=invisible,arrowhead=none] + +BTS_a1 -> BSC_a [label="(4) Measurement\nReport",style=dashed] +BTS_a1 -> BTS_b0 [label="(5) BSC decides to do\ninter-BSC Handover",style=dashed,constraint=false] + +{BSC_a,BSC_b} -> MSC [arrowhead=none,label=A] + +BSC_a -> MSC [label="(6) --> Handover Required\nto LAC=42 CI=6\n(10) <-- Handover Command",style=dashed,constraint=false,arrowhead=none] +MSC -> BSC_b [label="(7) <-- Handover Request\n(9) --> Handover Request ACK",style=dashed,constraint=false,arrowhead=none] + +BSC_b -> BTS_b0 [label="(8) activate new lchan",style=dashed,constraint=false] + +} -- cgit v1.2.3