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Update feedback and redundancy header.
authored
Mar 15, 2016
by
Andreas Schmidt
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prrt-spec.md
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PRRT used UDP as a transport layer and send frames composed of a general header and a packet type specific header.
## Packet Types
There are 6 packet types:
*
Data (
`0`
)
*
Repeated Data (
`1`
)
*
Redundancy (
`2`
)
*
Feedback (
`3`
)
*
Pre-sent Redundancy (
`4`
)
*
Channel Feedback (
`5`
)
[
Data (`0`)
](
#data
)
, Repeated Data (
`1`
),
[
Redundancy (`2`)
](
#redundancy
)
,
[
Feedback (`3`)
](
#feedback
)
, Pre-sent Redundancy (
`4`
), Channel Feedback (
`5`
)
## Header Formats
### General Header
### General Header
(Size: 8 Bytes)
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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@@ -24,7 +17,7 @@ There are 6 packet types:
| Packet Specific Header |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
### Data Header (Type `0`) (Size: 20 Byte)
###
<a name="data"></a>
Data Header (Type `0`) (Size: 20 Byte)
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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@@ -44,7 +37,7 @@ There are 6 packet types:
See Data.
### Redundancy Header (Type `2`) (Size: 4 Byte)
###
<a name="redundancy"></a>
Redundancy Header (Type `2`) (Size: 4 Byte)
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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@@ -52,7 +45,7 @@ See Data.
| Base Sequence Number | n | k |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
### Feedback Header (Type `3`) (Size: 28 + n * 4 Byte)
###
<a name="feedback"></a>
Feedback Header (Type `3`) (Size: 28 + n * 4 Byte)
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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