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Diffstat (limited to 'gsm-receiver/src/lib/decoder/openbtsstuff/GSMTDMA.h')
| -rw-r--r-- | gsm-receiver/src/lib/decoder/openbtsstuff/GSMTDMA.h | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/gsm-receiver/src/lib/decoder/openbtsstuff/GSMTDMA.h b/gsm-receiver/src/lib/decoder/openbtsstuff/GSMTDMA.h new file mode 100644 index 0000000..3b55b94 --- /dev/null +++ b/gsm-receiver/src/lib/decoder/openbtsstuff/GSMTDMA.h @@ -0,0 +1,358 @@ +/**@file Common-use GSM declarations, most from the GSM 04.xx and 05.xx series. */ +/* +* Copyright 2008 Free Software Foundation, Inc. +* +* This software is distributed under the terms of the GNU Public License. +* See the COPYING file in the main directory for details. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + +*/ + + + +#ifndef GSMTDMA_H +#define GSMTDMA_H + + +#include "GSMCommon.h" + + +namespace GSM { + + +/** + A description of a channel's multiplexing pattern. + From GSM 05.02 Clause 7. + This object encodes a line from tables 1-4 in the spec. + The columns of interest in this encoding are: + - 1, Channel Designation + - 2, Subchannel + - 3, Direction + - 4, Allowable Time Slot Assignments + - 5, Allowable RF Channel Assignments + - 7, Repeat Length in TDMA Frames + - 8, Interleaved Block TDMA Frame Mapping + + Col 6, Burst Type, is implied by 1 & 2 and encoded into the transcevier source code. +*/ +class TDMAMapping { + + public: + + /// The longest "repeat length" of any channel we support is 104 for the SACCH/TF. + static const unsigned mMaxRepeatLength = 104; + + private: + + TypeAndOffset mTypeAndOffset; ///< col 1, 2, encoded as per GSM 04.08 10.5.2.5 + bool mDownlink; ///< col 3, true for downlink channels + bool mUplink; ///< col 3, true for uplink channels + char mAllowedSlots; ///< col 4, an 8-bit mask + bool mC0Only; ///< col 5, true if channel is limited to C0 + unsigned mRepeatLength; ///< col 7 + unsigned mNumFrames; ///< number of occupied frames in col 8 + const unsigned *mFrameMapping; ///< col 8 + unsigned mReverseMapping[mMaxRepeatLength]; ///< index reversal of mapping, -1 means unused + + + public: + + + /** + Construct a TDMAMapping, encoding one line of GSM 05.02 Clause 7 Tables 1-4. + @param wTypeAndOffset Encoding of "Channel designnation". See GSM 04.08 10.5.2.5. + @param wDownlink True for downlink and bidirectional hannels + @param wUplink True for uplink and bidirectional channels + @param wRepeatLength "Repeat Length in TDMA Frames" + @param wNumFrames Number of occupied TDMA frames in frame mapping. + @param wFrameMapping "Interleaved Block TDMA Frame Mapping" -- MUST PERSIST!! + */ + TDMAMapping(TypeAndOffset wTypeAndOffset, + bool wDownlink, bool wUplink, char wAllowedSlots, bool wC0Only, + unsigned wRepeatLength, unsigned wNumFrames, const unsigned *wFrameMapping); + + /** Given a count of frames sent, return the corresponding frame number. */ + unsigned frameMapping(unsigned count) const + { return mFrameMapping[count % mNumFrames]; } + + /** Given a frame number, return the corresponding count, modulo patten length. */ + int reverseMapping(unsigned FN) const + { return mReverseMapping[FN % mRepeatLength]; } + + /**@name Simple accessors. */ + //@{ + unsigned numFrames() const { return mNumFrames; } + + unsigned repeatLength() const { return mRepeatLength; } + + TypeAndOffset typeAndOffset() const { return mTypeAndOffset; } + + bool uplink() const { return mUplink; } + + bool downlink() const { return mDownlink; } + + bool C0Only() const { return mC0Only; } + //@} + + ///< Return true if this channel is allowed on this slot. + bool allowedSlot(unsigned slot) const + { return mAllowedSlots & (1<<slot); } +}; + + + +/**@name Mux parameters for standard channels, from GSM 05.03 Clause 7 Tables 1-4. */ +//@{ +/**@name Beacon channels */ +//@{ +extern const TDMAMapping gFCCHMapping; ///< GSM 05.02 Clause 7 Table 3 Line 1 B0-B4 +extern const TDMAMapping gSCHMapping; ///< GSM 05.02 Clause 7 Table 3 Line 2 B0-B4 +extern const TDMAMapping gBCCHMapping; ///< GSM 05.02 Clause 7 Table 3 Line 3 +/// GSM 05.02 Clause 7 Table 3 Line 7 B0-B50, excluding C-V SDCCH parts (SDCCH/4 and SCCH/C4) +extern const TDMAMapping gRACHC5Mapping; +extern const TDMAMapping gCCCH_0Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B0 +extern const TDMAMapping gCCCH_1Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B1 +extern const TDMAMapping gCCCH_2Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B2 +extern const TDMAMapping gCCCH_3Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B3 +extern const TDMAMapping gCCCH_4Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B4 +extern const TDMAMapping gCCCH_5Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B5 +extern const TDMAMapping gCCCH_6Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B6 +extern const TDMAMapping gCCCH_7Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B7 +extern const TDMAMapping gCCCH_8Mapping; ///< GSM 05.02 Clause 7 Table 3 Line 5 B8 +//@} +/**@name SDCCH */ +//@{ +///@name For Combination V +//@{ +extern const TDMAMapping gSDCCH_4_0DMapping; ///< GSM 05.02 Clause 7 Table 3 Line 10/0D +extern const TDMAMapping gSDCCH_4_0UMapping; ///< GSM 05.02 Clause 7 Table 3 Line 10/0U +extern const TDMAMapping gSDCCH_4_1DMapping; +extern const TDMAMapping gSDCCH_4_1UMapping; +extern const TDMAMapping gSDCCH_4_2DMapping; +extern const TDMAMapping gSDCCH_4_2UMapping; +extern const TDMAMapping gSDCCH_4_3DMapping; +extern const TDMAMapping gSDCCH_4_3UMapping; +//@} +///@name For Combination VII +//@{ +extern const TDMAMapping gSDCCH_8_0DMapping; +extern const TDMAMapping gSDCCH_8_0UMapping; +extern const TDMAMapping gSDCCH_8_1DMapping; +extern const TDMAMapping gSDCCH_8_1UMapping; +extern const TDMAMapping gSDCCH_8_2DMapping; +extern const TDMAMapping gSDCCH_8_2UMapping; +extern const TDMAMapping gSDCCH_8_3DMapping; +extern const TDMAMapping gSDCCH_8_3UMapping; +extern const TDMAMapping gSDCCH_8_4DMapping; +extern const TDMAMapping gSDCCH_8_4UMapping; +extern const TDMAMapping gSDCCH_8_5DMapping; +extern const TDMAMapping gSDCCH_8_5UMapping; +extern const TDMAMapping gSDCCH_8_6DMapping; +extern const TDMAMapping gSDCCH_8_6UMapping; +extern const TDMAMapping gSDCCH_8_7DMapping; +extern const TDMAMapping gSDCCH_8_7UMapping; +//@} +//@} +/**@name SACCH */ +//@{ +/**name SACCH for SDCCH */ +//@{ +///@name For Combination V +//@{ +extern const TDMAMapping gSACCH_C4_0DMapping; +extern const TDMAMapping gSACCH_C4_0UMapping; +extern const TDMAMapping gSACCH_C4_1DMapping; +extern const TDMAMapping gSACCH_C4_1UMapping; +extern const TDMAMapping gSACCH_C4_2DMapping; +extern const TDMAMapping gSACCH_C4_2UMapping; +extern const TDMAMapping gSACCH_C4_3DMapping; +extern const TDMAMapping gSACCH_C4_3UMapping; +//@} +///@name For Combination VII +//@{ +extern const TDMAMapping gSACCH_C8_0DMapping; +extern const TDMAMapping gSACCH_C8_0UMapping; +extern const TDMAMapping gSACCH_C8_1DMapping; +extern const TDMAMapping gSACCH_C8_1UMapping; +extern const TDMAMapping gSACCH_C8_2DMapping; +extern const TDMAMapping gSACCH_C8_2UMapping; +extern const TDMAMapping gSACCH_C8_3DMapping; +extern const TDMAMapping gSACCH_C8_3UMapping; +extern const TDMAMapping gSACCH_C8_4DMapping; +extern const TDMAMapping gSACCH_C8_4UMapping; +extern const TDMAMapping gSACCH_C8_5DMapping; +extern const TDMAMapping gSACCH_C8_5UMapping; +extern const TDMAMapping gSACCH_C8_6DMapping; +extern const TDMAMapping gSACCH_C8_6UMapping; +extern const TDMAMapping gSACCH_C8_7DMapping; +extern const TDMAMapping gSACCH_C8_7UMapping; +//@} +//@} +/**@name SACCH for TCH/F on different timeslots. */ +//@{ +extern const TDMAMapping gSACCH_TF_T0Mapping; +extern const TDMAMapping gSACCH_TF_T1Mapping; +extern const TDMAMapping gSACCH_TF_T2Mapping; +extern const TDMAMapping gSACCH_TF_T3Mapping; +extern const TDMAMapping gSACCH_TF_T4Mapping; +extern const TDMAMapping gSACCH_TF_T5Mapping; +extern const TDMAMapping gSACCH_TF_T6Mapping; +extern const TDMAMapping gSACCH_TF_T7Mapping; +//@} +//@} +/**name FACCH+TCH/F placement */ +//@{ +extern const TDMAMapping gFACCH_TCHFMapping; +//@} +/**@name Test fixtures. */ +extern const TDMAMapping gLoopbackTestFullMapping; +extern const TDMAMapping gLoopbackTestHalfUMapping; +extern const TDMAMapping gLoopbackTestHalfDMapping; +//@} + + +/** Combined uplink/downlink information. */ +class MappingPair { + + private: + + const TDMAMapping& mDownlink; + const TDMAMapping& mUplink; + + public: + + MappingPair(const TDMAMapping& wDownlink, const TDMAMapping& wUplink) + :mDownlink(wDownlink), mUplink(wUplink) + {} + + MappingPair(const TDMAMapping& wMapping) + :mDownlink(wMapping), mUplink(wMapping) + {} + + const TDMAMapping& downlink() const { return mDownlink; } + const TDMAMapping& uplink() const { return mUplink; } + +}; + + +/**@name Common placement pairs. */ +//@{ +/**@ SDCCH placement pairs. */ +//@{ +extern const MappingPair gSDCCH_4_0Pair; +extern const MappingPair gSDCCH_4_1Pair; +extern const MappingPair gSDCCH_4_2Pair; +extern const MappingPair gSDCCH_4_3Pair; +extern const MappingPair gSDCCH_8_0Pair; +extern const MappingPair gSDCCH_8_1Pair; +extern const MappingPair gSDCCH_8_2Pair; +extern const MappingPair gSDCCH_8_3Pair; +extern const MappingPair gSDCCH_8_4Pair; +extern const MappingPair gSDCCH_8_5Pair; +extern const MappingPair gSDCCH_8_6Pair; +extern const MappingPair gSDCCH_8_7Pair; +//@} +/**@ SACCH-for-SDCCH placement pairs. */ +//@{ +extern const MappingPair gSACCH_C4_0Pair; +extern const MappingPair gSACCH_C4_1Pair; +extern const MappingPair gSACCH_C4_2Pair; +extern const MappingPair gSACCH_C4_3Pair; +extern const MappingPair gSACCH_C8_0Pair; +extern const MappingPair gSACCH_C8_1Pair; +extern const MappingPair gSACCH_C8_2Pair; +extern const MappingPair gSACCH_C8_3Pair; +extern const MappingPair gSACCH_C8_4Pair; +extern const MappingPair gSACCH_C8_5Pair; +extern const MappingPair gSACCH_C8_6Pair; +extern const MappingPair gSACCH_C8_7Pair; +//@} +/**@name Traffic channels. */ +//@{ +extern const MappingPair gFACCH_TCHFPair; +extern const MappingPair gSACCH_FT_T0Pair; +extern const MappingPair gSACCH_FT_T1Pair; +extern const MappingPair gSACCH_FT_T2Pair; +extern const MappingPair gSACCH_FT_T3Pair; +extern const MappingPair gSACCH_FT_T4Pair; +extern const MappingPair gSACCH_FT_T5Pair; +extern const MappingPair gSACCH_FT_T6Pair; +extern const MappingPair gSACCH_FT_T7Pair; +//@} +//@} + + + +/** A CompleteMapping includes uplink, downlink and the SACCH. */ +class CompleteMapping { + + private: + + const MappingPair& mLCH; + const MappingPair& mSACCH; + + public: + + CompleteMapping(const MappingPair& wLCH, const MappingPair& wSACCH) + :mLCH(wLCH), mSACCH(wSACCH) + {} + + const MappingPair& LCH() const { return mLCH; } + const MappingPair& SACCH() const { return mSACCH; } + +}; + + + +/**@name Complete placements for common channel types. */ +//@{ +/**@name SDCCH/4 */ +//@{ +extern const CompleteMapping gSDCCH_4_0; +extern const CompleteMapping gSDCCH_4_1; +extern const CompleteMapping gSDCCH_4_2; +extern const CompleteMapping gSDCCH_4_3; +//@} +/**@name SDCCH/8 */ +//@{ +extern const CompleteMapping gSDCCH_8_0; +extern const CompleteMapping gSDCCH_8_1; +extern const CompleteMapping gSDCCH_8_2; +extern const CompleteMapping gSDCCH_8_3; +extern const CompleteMapping gSDCCH_8_4; +extern const CompleteMapping gSDCCH_8_5; +extern const CompleteMapping gSDCCH_8_6; +extern const CompleteMapping gSDCCH_8_7; +//@} +/**@name TCH/F on different slots. */ +//@{ +extern const CompleteMapping gTCHF_T0; +extern const CompleteMapping gTCHF_T1; +extern const CompleteMapping gTCHF_T2; +extern const CompleteMapping gTCHF_T3; +extern const CompleteMapping gTCHF_T4; +extern const CompleteMapping gTCHF_T5; +extern const CompleteMapping gTCHF_T6; +extern const CompleteMapping gTCHF_T7; +//@} +//@} + + +}; // namespace GSM + + +#endif + +// vim: ts=4 sw=4 |