cellular-infrastructure
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osmo-pcu
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Hack to slow down uplink transfer

This commit is contained in:
Andreas Eversberg 2012-06-23 19:35:56 +02:00
parent 0aed654ac7
commit fe411b3cfd
2 changed files with 14 additions and 10 deletions
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10
src/gprs_bssgp_pcu.h
View File

@ -49,11 +49,11 @@ struct bssgp_bvc_ctx *btsctx_alloc(uint16_t bvci, uint16_t nsei);
#define BLOCK_DATA_LEN 20
#define BLOCK_LEN 23
#define CELL_ID 3
#define MNC 55
#define MCC 905
#define PCU_LAC 1000
#define PCU_RAC 1
#define CELL_ID 0
#define MNC 1
#define MCC 001
#define PCU_LAC 1
#define PCU_RAC 0
extern struct bssgp_bvc_ctx *bctx;

14
src/gprs_rlcmac.cpp
View File

@ -253,7 +253,7 @@ void write_packet_uplink_assignment(bitvec * dest, uint8_t tfi, uint32_t tlli)
bitvec_write_field(dest, wp,0x0,1); // Dynamic Allocation
bitvec_write_field(dest, wp,0x0,1); // P0 = off
bitvec_write_field(dest, wp,0x1,1); // USF_GRANULARITY
bitvec_write_field(dest, wp,0x1,0); // USF_GRANULARITY
bitvec_write_field(dest, wp,0x1,1); // switch TFI : on
bitvec_write_field(dest, wp,tfi,5);// TFI
@ -338,7 +338,7 @@ int write_immediate_assignment(bitvec * dest, uint8_t downlink, uint8_t ra, uint
bitvec_write_field(dest, wp, 0, 1); // POLLING
bitvec_write_field(dest, wp, 0, 1); // ALLOCATION_TYPE: dynamic
bitvec_write_field(dest, wp, 1, 3); // USF
bitvec_write_field(dest, wp, 1, 1); // USF_GRANULARITY
bitvec_write_field(dest, wp, 1, 0); // USF_GRANULARITY
bitvec_write_field(dest, wp, 0 , 1); // "0" power control: Not Present
bitvec_write_field(dest, wp, 0, 2); // CHANNEL_CODING_COMMAND
bitvec_write_field(dest, wp, 1, 1); // TLLI_BLOCK_CHANNEL_CODING
@ -654,12 +654,16 @@ void gprs_rlcmac_rcv_block(bitvec *rlc_block)
}
}
struct msgb *gen_dummy_msg(void)
struct msgb *gen_dummy_msg(uint8_t usf)
{
struct msgb *msg = msgb_alloc(23, "rlcmac_dl_idle");
// RLC/MAC filler with USF=1
bitvec *filler = bitvec_alloc(23);
bitvec_unhex(filler, "41942b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
#warning HACK
if (usf == 1)
bitvec_unhex(filler, "41942b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
else
bitvec_unhex(filler, "42942b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
bitvec_pack(filler, msgb_put(msg, 23));
bitvec_free(filler);
return msg;
@ -673,7 +677,7 @@ void gprs_rlcmac_rcv_rts_block(uint8_t trx, uint8_t ts, uint16_t arfcn,
set_current_fn(fn);
msg = msgb_dequeue(&block_queue);
if (!msg)
msg = gen_dummy_msg();
msg = gen_dummy_msg(block_nr ? 2 : 1);
pcu_l1if_tx_pdtch(msg, trx, ts, arfcn, fn, block_nr);
}