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Add data structure for ARQ-II in EGPRS DL 

Modify the existing data structure to support ARQ-II for Retx in EGPRS DL.
This commit is contained in:
Aravind Sirsikar 2016-05-19 21:12:29 +05:30
parent 58b6646750
commit 5974ec7609
3 changed files with 53 additions and 0 deletions
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36
src/gprs_coding_scheme.cpp
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@ -21,6 +21,42 @@
#include "gprs_coding_scheme.h"
/*
* 44.060 Table 8.1.1.1 and Table 8.1.1.2
* In has 3 level indexing. 0th level is ARQ type
* 1st level is Original MCS( index 0 corresponds to MCS1 and so on)
* 2nd level is MS MCS (index 0 corresponds to MCS1 and so on)
* in 0th level indexing only ARQ type 2 is supported i.e index 1 for
* incremental redundancy
*/
/* TODO: Need to support ARQ type 1 */
enum GprsCodingScheme::Scheme GprsCodingScheme::egprs_mcs_retx_tbl[MAX_NUM_ARQ]
[MAX_NUM_MCS][MAX_NUM_MCS] = {
{
{MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1},
{MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2},
{MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3},
{MCS1, MCS1, MCS1, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4},
{MCS2, MCS2, MCS2, MCS2, MCS5, MCS5, MCS7, MCS7, MCS7},
{MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS6, MCS9},
{MCS2, MCS2, MCS2, MCS2, MCS5, MCS5, MCS7, MCS7, MCS7},
{MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS8, MCS8},
{MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS6, MCS9}
},
{
{MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1},
{MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2},
{MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3},
{MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4},
{MCS5, MCS5, MCS5, MCS5, MCS5, MCS5, MCS7, MCS7, MCS7},
{MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS9},
{MCS5, MCS5, MCS5, MCS5, MCS5, MCS5, MCS7, MCS7, MCS7},
{MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS8, MCS8},
{MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS9}
}
};
static struct {
struct {
unsigned int bytes;

8
src/gprs_coding_scheme.h
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@ -26,6 +26,12 @@
class GprsCodingScheme {
public:
#define MAX_NUM_ARQ 2 /* max. number of ARQ */
#define MAX_NUM_MCS 9 /* max. number of MCS */
#define EGPRS_ARQ1 0x0
#define EGPRS_ARQ2 0x1
enum Scheme {
UNKNOWN,
CS1, CS2, CS3, CS4,
@ -105,6 +111,8 @@ public:
static GprsCodingScheme getEgprsByNum(unsigned num);
static const char *modeName(Mode mode);
static enum Scheme egprs_mcs_retx_tbl[MAX_NUM_ARQ]
[MAX_NUM_MCS][MAX_NUM_MCS];
private:
GprsCodingScheme(int s); /* fail on use */
GprsCodingScheme& operator =(int s); /* fail on use */

9
src/rlc.h
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@ -120,6 +120,15 @@ struct gprs_rlc_data {
uint8_t len;
struct gprs_rlc_data_block_info block_info;
/*
* cs_current_trans is variable to hold the cs value for
* current transmission. cs_current_trans is same as cs during
* transmission case. during retransmission cs_current_trans is
* fetched from egprs_mcs_retx_tbl table based on
* cs and demanded cs.reference is 44.060 Table
* 8.1.1.1 and Table 8.1.1.2
*/
GprsCodingScheme cs_current_trans;
GprsCodingScheme cs;
/* puncturing scheme value to be used for next transmission*/