diff options
| -rw-r--r-- | doc/Makefile.am | 1 | ||||
| -rw-r--r-- | doc/location_services_ta2.ladder | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/doc/Makefile.am b/doc/Makefile.am index 7218a6b42..2a522924e 100644 --- a/doc/Makefile.am +++ b/doc/Makefile.am @@ -14,6 +14,7 @@ msc: \ $(builddir)/handover-inter-bsc-in.png \ $(builddir)/mgw-endpoint.png \ $(builddir)/location_services_ta.png \ + $(builddir)/location_services_ta2.png \ $(NULL) dot: \ diff --git a/doc/location_services_ta2.ladder b/doc/location_services_ta2.ladder new file mode 100644 index 000000000..d603e5982 --- /dev/null +++ b/doc/location_services_ta2.ladder @@ -0,0 +1,43 @@ +{hscale=2} + +ms = MS/BTS +bsc = BSC +smlc = SMLC +msc = MSC + +bsc < msc PERFORM LOCATION REQUEST + 3GPP TS 48.008 3.2.1.71 + +--- MS in IDLE MODE (not connected) + +ms < bsc RR Paging Request + 3GPP TS 48.018 9.1.22-24 + +ms > bsc RSL CHANNEL REQUIRED + 3GPP TS 48.058 8.5.3 + includes Access Delay (9.3.17) == Timing Advance + +ms > bsc RR Paging Response + 3GPP TS 48.018 9.1.25 + +ms < bsc RF CHANNEL RELEASE + 3GPP TS 48.058 8.4.14 + +--- MS in DEDICATED MODE (currently active) + +ms > bsc earlier Measurement Report provides Timing Advance + +--- + +bsc > smlc BSSMAP-LE PERFORM LOCATION REQUEST + 3GPP TS 49.031 9.1 + Contains BSSLAP APDU with current TA value + +smlc () . No TA Request needed, already know the TA + +bsc < smlc BSSMAP-LE PERFORM LOCATION RESPONSE + 3GPP TS 49.031 9.2 + Returns same TA value + +bsc > msc PERFORM LOCATION RESPONSE + 3GPP TS 48.008 3.2.1.72 |