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2016-02-04edge: Support all coding schemes for BSSGP flow controljerlbeck/wip/edgeJacob Erlbeck1-31/+50
Currently the MCS schemes are not supported when the leak rate is being computed. This leads to a lower value for the leak rate, thus limiting the throughput to GPRS-like ranges. Use the payload size reported by GprsCodingScheme instead. Sponsored-by: On-Waves ehf
2016-02-04edge: Work-around to not use MCS-6 with paddingJacob Erlbeck1-4/+6
Currently single BSN blocks of size 68 (a single unit from MCS-8) are put into a MCS-6 block with padding according to TS 44.060 Annex J. Unfortunately, these packets are ignored by the E71. This might be related to the currently incorrect usage of the puncturing schemes and the RSB bit. Avoid downgrading from MCS-8 to MCS-6 if there is no second block available. Send the block twice instead. Sponsored-by: On-Waves ehf
2016-02-04EXP: Compare len instead of using cs.isCombinableJacob Erlbeck2-15/+23
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-04EXP copy single fieldsJacob Erlbeck1-2/+6
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-04EXP assert index rangeJacob Erlbeck1-0/+1
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-04EXP copy without pointerJacob Erlbeck1-1/+1
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-04EXPERIMENTAL use memcpyJacob Erlbeck1-2/+3
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-04tbf/tests: Add tests for EGPRS TBF establishmentJacob Erlbeck1-16/+153
Add a test for EGPRS two phase access based on RA caps. Add a test for DL TBFs where data block are encoded with each MCS. Sponsored-by: On-Waves ehf
2016-02-04EXPERIMENTAL add assertion for data_lenJacob Erlbeck1-0/+1
Sponsored-by: On-Waves ehf
2016-02-03FIXUP create_dl_acked_block (->index2)Jacob Erlbeck1-1/+1
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03EXPERIEMTNAL disable decToSingleBlockJacob Erlbeck1-0/+2
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03FIXUP index2Jacob Erlbeck1-1/+1
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03FIXUP bf: Support RLC padding (TODO)Jacob Erlbeck1-1/+1
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03FIXUP WIP: second BSN (TODO)Jacob Erlbeck1-1/+4
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03FIXUP bf: Support RLC padding (TODO)Jacob Erlbeck1-1/+2
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03FIXUP WIP send 2 bsnaJacob Erlbeck1-0/+3
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03tbf: Support RLC padding (TODO)Jacob Erlbeck1-2/+6
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03rlc: Use the rlc structure to access the data unit in the RLC messageJacob Erlbeck2-18/+29
Currently most offsets are hard-coded which makes it difficult to access the data units and their headers when padding has to be taken into account. These offset are already provided by the gprs_rlc_data_info_init_ul/dl functions. Change the encoder/decoder to use these values. Note that some assumptions (bit alignment) are still present in the code and checked by assertions. Sponsored-by: On-Waves ehf
2016-02-03rlc: Add gprs_rlc_mcs_cps_decodeJacob Erlbeck2-0/+31
To access EGPRS data blocks, the optional padding must be taken into account. Whether padding has been used must be dervied from the CPS field in the header of the RLC EGPRS data message. Add this function to decode the CPS value and extract that information. Sponsored-by: On-Waves ehf
2016-02-03rlc: Add with_padding argument to gprs_rlc_data_info_init_dl/ulJacob Erlbeck3-30/+40
The offsets of the data areas change when padding is used (see TS 44.060, 9.3.2.1 and Annex J for details). Extend the parameter lists to pass the with_padding flag and use that information to compute the correct offsets. Sponsored-by: On-Waves ehf
2016-02-03cs: Add GprsCodingScheme::optionalPaddingBitsJacob Erlbeck3-15/+23
Return the amount of optional padding bits, which is 6*8 for MCS-3 and MCS-6 and 0 for all other coding schemes. The padding is needed the encode 68 byte data blocks (MCS-8) with these schemes. See TS 44.060, 9.3.2.1 and Annex J for details. Sponsored-by: On-Waves ehf
2016-02-03WIP: second BSN (TODO)Jacob Erlbeck3-66/+105
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-03ms: Fix GprsMs::current_cs_dl()Jacob Erlbeck1-1/+1
Currently the queue length is overwritten by the remaining chunk length, which should be added instead. This may result in a lower CS/MCS value than expected. Add the chunk length instead if the TBF is present. Sponsored-by: On-Waves ehf
2016-02-03cs: Add family related methodsJacob Erlbeck3-16/+86
Add family handling and the related methods family, isFamilyCompatible, isCombinable, decToSingleBlock to GprsCodingScheme. Sponsored-by: On-Waves ehf
2016-02-02WIP send 2 bsnaJacob Erlbeck2-8/+26
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02FIXUP gprs_rlc_mcs_cps 1a880da4Jacob Erlbeck1-1/+1
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02FIXUP MCS-789 encoding (differential BSN2)Jacob Erlbeck1-2/+6
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02edge: Refactor create_dl_acked_block for multi-block supportJacob Erlbeck1-22/+58
Currently the method is hard-coded to support a single BSN only. MCS-7 to MCS-9 encode 2 data blocks into a single RLC data message. This commit refactors create_dl_acked_block to process any number of blocks internally. Note that this does not extend the parameter list accordingly and just duplicates the BSN if these MCS are being used. Sponsored-by: On-Waves ehf
2016-02-02edge/vty: Set initial MCSJacob Erlbeck1-0/+42
This adds the following VTY command (config-pcu node): - mcs <1-9> sets initial DL and UL MCS to the same value - mcs <1-9> <1-9> sets initial DL and UL MCS separately - no mcs sets the default values Sponsored-by: On-Waves ehf
2016-02-02WIP: Add decoding test based on real RLC messages (TODO)Jacob Erlbeck1-0/+28
2016-02-02Revert "WIP: Use current_pacch_slots (TODO)"Jacob Erlbeck1-23/+5
This reverts commit 02fddb6c964d797926006898346a0192c6ac41f9.
2016-02-02WIP: Use current_pacch_slots (TODO)Jacob Erlbeck1-5/+23
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02rlc: Support encoding of EGPRS header type 1 + 2Jacob Erlbeck4-8/+100
Currently only header type 3 (MCS-1 to MCS-4) is supported. Add header structs to rlc.h and extend Encoding::rlc_write_dl_data_header accordingly. Sponsored-by: On-Waves ehf
2016-02-02WIP: Add state ASSIGNING (TODO)Jacob Erlbeck4-10/+24
entered when the assigment is really sent Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02FIXUP pacch slots functionJacob Erlbeck2-4/+7
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02ms: Add current_pacch_slots methodJacob Erlbeck3-0/+31
The PACCH is specific to an MS and may change when a TBF is established or removed (see TS 44.060, 8.1.1.2.2). For multislot class type 2 phones, more than one timeslot may be used to transmit RLC/MAC control messages. Add a method that returns a set of TS which can be used for the PACCH. Sponsored-by: On-Waves ehf
2016-02-02sched: Do PACCH assignments for the same direction lastJacob Erlbeck1-4/+23
Currently the selection of a pending control message is done round robin. It can possibly happen, that a DL assigment is sent on a DL TBF while an UL assignment is pending. The MS will replace the old DL TBF in that case, so that it can no longer be used for the PACCH so that the UL assignment is lost. Give assigment requests for the same direction a lower priority. Sponsored-by: On-Waves ehf
2016-02-02tbf: Only free TBF if it was replaced in rcv_control_ackJacob Erlbeck1-2/+4
Currently the TBF whose PACCH has been used to send an assigment is freed if it is in state WAIT_RELEASE. Sometimes this TBF could be used for several assignments (e.g. an 'old' DL TBF is used to assign an UL and then a DL TBF). The second of these assigments will never be sent in that case. On the other hand, the MS replaces a TBF of the same direction, so the old one can be freed in that case. Only free the TBF if it is in state WAIT_RELEASE and has the same direction like the new one. Sponsored-by: On-Waves ehf
2016-02-02edge: Support EGPRS in IMM ASSIGNMENTJacob Erlbeck1-0/+25
Tell the MS to use EGPRS if EGPRS is enabled on the TBF. Note that only downlink TBF will be supported so far. Sponsored-by: On-Waves ehf
2016-02-02encoding: Redesign Encoding::write_immediate_assignment APIJacob Erlbeck3-35/+55
The EGPRS support will need more information to encode the IMMEDIATE ASSIGMENT. Instead of adding more parameters pass a pointer to the TBF unless an SBA shall be done (indicated by tbf == NULL). All values that can be derived from the TBF and are not needed for an SBA are removed from the parameter list. Return a negative value on error. Sponsored-by: On-Waves ehf
2016-02-02encoding: Refactor write_immediate_assignmentJacob Erlbeck1-79/+98
Move the IA rest encoding into separate functions fpr uplink and downlink. Sponsored-by: On-Waves ehf
2016-02-02encoding: Use explicit LH encoding in write_immediate_assignmentJacob Erlbeck1-2/+2
Currently bitvec_write_field is used which just sets the bits as given, while the spec 44.018 assumes LH encoding. Use the bitvec_write_field_lh function instead. Sponsored-by: On-Waves ehf
2016-02-02pcu: Add bitvec_write_field_lhJacob Erlbeck2-0/+19
While the bitvec functions from libosmocore support LH encoding, the C++ wrapper does not. Add a bitvec_write_field_lh function that is similar to bitvec_write_field, but writes L and H instead of ZERO and ONE. Sponsored-by: On-Waves ehf
2016-02-02tbf: Don't change type from CCCH to PACCH without ackJacob Erlbeck2-2/+11
Currently the CCCH flag is cleared and the PACCH flag is set when a multislot upgrade is scheduled for a downlink TBF, even if the MS has never confirmed in any way that the PACCH really exists. This can happen if the MS did not receive the DL IMM.ASS. Since the CCCH flags gets cleared in that case, the IMM.ASSS is never retried and all subsequent PACKET DOWNLINK ASSIGNMENTS will fail. This commit delays the update of these flags until the MS has responded with a corresponding CONTROL ACK. Sponsored-by: On-Waves ehf
2016-02-02tbf: Use TLLI as ID if TFI not yet assignedJacob Erlbeck5-9/+44
Currently the old TFI is always used as ID when a PACKET DOWNLINK ASSIGNMENT is generated. This fails if the old TBF has not been fully assigned yet. The MS will then ignore the PDA. This commit changes write_packet_downlink_assignment to accept an additional parameter old_tfi_is_valid and uses the new TBF's TLLI instead of the olf TFI if that parameter is set to false. Sponsored-by: On-Waves ehf
2016-02-02tbf: Add check_polling/set_polling (TODO)Jacob Erlbeck8-77/+135
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02tbf: Add gprs_rlcmac_tbf::first_control_ts methodJacob Erlbeck3-2/+8
Currently the tbf->first_ts field is accessed directly to get the first allocated TS when an immediate assigment is generated. While this is in principle correct (since in that state no other TBF exists), a more generic function that always returns the current (first) PACCH TS would hide the details. Add a function to return the current first PACCH timeslot. Note that concurrent TBF are not supported yet, which will not lead to errors yet, since it is only being used after RACH. Sponsored-by: On-Waves ehf
2016-02-02tbf: Add and use tbf->poll_tsJacob Erlbeck7-25/+32
Currently tbf->control_ts is used to look up an incoming poll response. Since that may eventually change, poll timeouts could theoretically happen in that case. Store the real poll TS in tbf->poll_ts at all places where tbf->poll_fn is set. Do not use tbf->control_ts to look up outstanding polls. Sponsored-by: On-Waves ehf
2016-02-02WIP Mark control slots in VTY TBF outJacob Erlbeck1-1/+2
Ticket: OW#???? Sponsored-by: On-Waves ehf
2016-02-02tbf: Use is_control_ts() instead of comparing TS values directlyJacob Erlbeck4-8/+11
Currently there are some places where tbf->control_ts != ts is evaluated to check, whether ts is a control slot. Replace these expressions by tbf->is_control_ts(ts) which does the same whitout exposing internal fields. Sponsored-by: On-Waves ehf
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