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| author | Harald Welte <laforge@gnumonks.org> | 2016-11-03 14:11:24 +0100 |
|---|---|---|
| committer | Max <msuraev@sysmocom.de> | 2016-11-03 14:12:08 +0100 |
| commit | 8d2b6b858f3b3fe7f5c6deab7b919a06ddd495e0 (patch) | |
| tree | cd95365d32314bbc5a91aa141ff57bd435d3ebcf /OsmoBTS | |
| parent | 073cfa3c4916c6470b88d72e4081fd2bf53da5f0 (diff) | |
rtp-amr: TCH/AHS Uplink: FACCH/H During DTX
New chapter contributed by Nutaq:
* TCH/AHS Uplink: FACCH/H During DTX operation
Change-Id: I4a9c58e02dcfeb388ff3a30ba321ea3cec325518
Diffstat (limited to 'OsmoBTS')
| -rw-r--r-- | OsmoBTS/abis/rtp-amr.adoc | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/OsmoBTS/abis/rtp-amr.adoc b/OsmoBTS/abis/rtp-amr.adoc index 6716800..fbd6b50 100644 --- a/OsmoBTS/abis/rtp-amr.adoc +++ b/OsmoBTS/abis/rtp-amr.adoc @@ -843,7 +843,54 @@ msc { ms => phy [label="L1 burst (sub-block 3 of speech frame N + sub-block 1 of speech frame N+1)"]; ms => phy [label="L1 burst (sub-block 4 of speech frame N + sub-block 2 of speech frame N+1)"]; phy => bts [label="PH-DATA.ind GsmL1_TchPlType_Amr (N)"]; - bts => mgw [label="RTP (AMR FT=0..7,Q=1)"]; + bts => mgw [label="RTP (AMR FT=0..7,Q=1) MARKER=1"]; +} +---- + +==== TCH/AHS Uplink: FACCH/H During DTX operation + +The following procedure must be observed if a FACCH/H frame must be transmitted during DTX operation. + +["mscgen"] +---- +msc { + hscale = 2; + ms [label="MS"], phy [label="BTS-PHY"], bts [label="BTS"], mgw [label="MGW"]; + + ...; + ms .. mgw [label="FACCH/H during DTX operation"]; + + ms -x phy [label="Supressed L1 burst"]; + ms -x phy [label="Supressed L1 burst"]; + phy -x bts [label="No PH-DATA.ind sent[BFI]"]; + bts -x mgw [label="Suppressed RTP frame"]; + + ms => phy [label="L1 burst (block 1 of SID_ONSET + sub-block 1 of FACCH/H)"]; + ms => phy [label="L1 burst (block 2 of SID_ONSET + sub-block 2 of FACCH/H)"]; + phy -x bts [label="No PH-DATA.ind sent[BFI]"]; + bts -x mgw [label="Suppressed RTP frame"]; + + ms => phy [label="L1 burst (sub-block 3+4 of FACCH/H)"]; + ms => phy [label="L1 burst (sub-block 5+6 of FACCH/H)"]; + phy -x bts [label="No PH-DATA.ind sent[BFI]"]; + bts -x mgw [label="Suppressed RTP frame"]; + + ms => phy [label="L1 burst (sub-block 7 of FACCH/H + sub-block 1 of SID_FIRST_P1)"]; + ms => phy [label="L1 burst (sub-block 8 of FACCH/H + sub-block 2 of SID_FIRST_P1)"]; + phy => bts [label="PH-DATA.ind GsmL1_TchPlType_Amr_Onset"]; + bts => bts [label="lchan_set_marker() and store CMI"]; + phy => bts [label="PH-DATA.ind FACCH/H"]; + bts => mgw [label="FACCH/H"]; + + ms => phy [label="L1 burst (sub-block 3 of SID_FIRST_P1 + block 1 of SID_FIRST_P2)"]; + ms => phy [label="L1 burst (sub-block 4 of SID_FIRST_P1 + block 2 of SID_FIRST_P2)"]; + phy -x bts [label="No PH-DATA.ind sent[BFI]"]; + bts -x mgw [label="Suppressed RTP frame"]; + + ms -x phy [label="Supressed L1 burst"]; + ms -x phy [label="Supressed L1 burst"]; + phy => bts [label="PH-DATA.ind GsmL1_TchPlType_Amr_SidFirstP1"]; + bts => mgw [label="RTP (AMR FT=SID,Q=1)"]; } ---- |