diff options
| author | Pau Espin Pedrol <pespin@sysmocom.de> | 2019-11-28 17:00:44 +0100 |
|---|---|---|
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2019-11-28 17:11:56 +0100 |
| commit | 1e6eb30f510e98850df8128a71f87d5bdb357ee1 (patch) | |
| tree | a2caf7a8727b2deb2d02130e16f65936185de109 /src/bts.h | |
| parent | 1d8497ba6a48d68f735dbb1ccd8584f77aef72a5 (diff) | |
Clarify (M)CS related VTY attributes
Some are used to control (M)CS values for downlink while some do it for
uplink. Let's make clear which one is used for what. Take the chance to
document the fields a bit better than they were.
Some more information about the origin of cs_downgrade_threshold can be
found in the commit introducing it: 70b96aa232bd9784a94247bf7b193cb2147ada9d.
Related: OS#4286
Change-Id: I4e890e924b094a1937fbd3794de96704cf0421a8
Diffstat (limited to 'src/bts.h')
| -rw-r--r-- | src/bts.h | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -142,12 +142,15 @@ struct gprs_rlcmac_bts { /* 0 to support resegmentation in DL, 1 for no reseg */ uint8_t dl_arq_type; - uint8_t cs_adj_enabled; - uint8_t cs_adj_upper_limit; - uint8_t cs_adj_lower_limit; + uint8_t cs_adj_enabled; /* whether cs_adj_{upper,lower}_limit are used to adjust DL CS */ + uint8_t cs_adj_upper_limit; /* downgrade DL CS if error rate above its value */ + uint8_t cs_adj_lower_limit; /* upgrade DL CS if error rate below its value */ + /* downgrade DL CS when less than specified octets are left in tx queue. Optimization, see paper: + "Theoretical Analysis of GPRS Throughput and Delay" */ + uint16_t cs_downgrade_threshold; + /* Link quality range for each UL (M)CS. Below or above, next/prev (M)CS is selected. */ struct {int16_t low; int16_t high; } cs_lqual_ranges[MAX_GPRS_CS]; struct {int16_t low; int16_t high; } mcs_lqual_ranges[MAX_EDGE_MCS]; - uint16_t cs_downgrade_threshold; /* downgrade if less packets left (DL) */ uint16_t ws_base; uint16_t ws_pdch; /* increase WS by this value per PDCH */ |