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openbts-osmo/public-trunk/TRXManager/TRXManager.h

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/*
* Copyright 2008 Free Software Foundation, Inc.
*
* This software is distributed under the terms of the GNU Affero Public License.
* See the COPYING file in the main directory for details.
*
* This use of this software may be subject to additional restrictions.
* See the LEGAL 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 Affero 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TRXMANAGER_H
#define TRXMANAGER_H
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "Threads.h"
#include "Sockets.h"
#include "Interthread.h"
#include "GSMCommon.h"
#include "GSMTransfer.h"
#include <list>
/* Forward refs into the GSM namespace. */
namespace GSM {
class L1Decoder;
};
class ARFCNManager;
/**
The TransceiverManager processes the complete transcevier interface.
There is one of these for each access point.
*/
class TransceiverManager {
private:
/// the ARFCN manangers under this TRX
std::vector<ARFCNManager*> mARFCNs;
/// set true when the first CLOCK packet is received
volatile bool mHaveClock;
/// socket for clock management messages
UDPSocket mClockSocket;
/// a thread to monitor the global clock socket
Thread mClockThread;
public:
/**
Construct a TransceiverManager.
@param numARFCNs Number of ARFCNs supported by the transceiver.
@param wTRXAddress IP address of the transceiver.
@param wBasePort The base port for the interface, as defined in README.TRX.
*/
TransceiverManager(int numARFCNs,
const char* wTRXAddress, int wBasePort);
/**@name Accessors. */
//@{
ARFCNManager* ARFCN(unsigned i) { assert(i<mARFCNs.size()); return mARFCNs.at(i); }
//@}
/** Start the clock management thread and all ARFCN managers. */
void start();
/** Clock service loop. */
friend void* ClockLoopAdapter(TransceiverManager*);
private:
/** Handler for messages on the clock interface. */
void clockHandler();
};
void* ClockLoopAdapter(TransceiverManager *TRXm);
/**
The ARFCN Manager processes transceiver functions for a single ARFCN.
When we do frequency hopping, this will manage a full rate radio channel.
*/
class ARFCNManager {
private:
TransceiverManager &mTransceiver;
Mutex mDataSocketLock; ///< lock to prevent contentional for the socket
UDPSocket mDataSocket; ///< socket for data transfer
Mutex mControlLock; ///< lock to prevent overlapping transactions
UDPSocket mControlSocket; ///< socket for radio control
Thread mRxThread; ///< thread to receive data from rx
/**@name The demux table. */
//@{
Mutex mTableLock;
static const unsigned maxModulus=51*26*4; ///< maximum unified repeat period
GSM::L1Decoder* mDemuxTable[8][maxModulus]; ///< the demultiplexing table for received bursts
//@}
unsigned mARFCN; ///< the current ARFCN
public:
ARFCNManager(const char* wTRXAddress, int wBasePort, TransceiverManager &wTRX);
/** Start the uplink thread. */
void start();
unsigned ARFCN() const { return mARFCN; }
void writeHighSide(const GSM::TxBurst& burst);
/**@name Transceiver controls. */
//@{
/**
Tune to a given ARFCN.
@param wARFCN Target for tuning.
@return true on success.
*/
bool tune(int wARFCN);
/**
Tune to a given ARFCN, but with rx and tx on the same (downlink) frequency.
@param wARFCN Target for tuning, using downlink frequeny.
@return true on success.
*/
bool tuneLoopback(int wARFCN);
/** Turn off the transceiver. */
bool powerOff();
/** Turn on the transceiver. */
bool powerOn();
/**
Set maximum expected delay spread.
@param km Max network range in kilometers.
@return true on success.
*/
bool setMaxDelay(unsigned km);
/**
Set radio receive gain.
@param new desired gain in dB.
@return new gain in dB.
*/
signed setRxGain(signed dB);
/**
Get noise level as RSSI.
@return current noise level.
*/
signed getNoiseLevel(void);
/**
Set power wrt full scale.
@param dB Power level wrt full power.
@return true on success.
*/
bool setPower(int dB);
/**
Set TSC for all slots on the ARFCN.
@param TSC TSC to use.
@return true on success.
*/
bool setTSC(unsigned TSC);
/**
Describe the channel combination on a given slot.
@param TN The timeslot number 0..7.
@param combo Channel combination, GSM 05.02 6.4.1, 0 for inactive.
@return true on success.
*/
bool setSlot(unsigned TN, unsigned combo);
//@}
/** Install a decoder on this ARFCN. */
void installDecoder(GSM::L1Decoder* wL1);
private:
/** Action for reception. */
void driveRx();
/** Demultiplex and process a received burst. */
void receiveBurst(const GSM::RxBurst&);
/** Receiver loop. */
friend void* ReceiveLoopAdapter(ARFCNManager*);
/**
Send a command packet and get the response packet.
@param command The NULL-terminated command string to send.
@param response A buffer for the response packet, assumed to be char[MAX_PACKET_LENGTH].
@return Length of the response or -1 on failure.
*/
int sendCommandPacket(const char* command, char* response);
/**
Send a command with a parameter.
@param command The command name.
@param param The parameter for the command.
@param responseParam Optional parameter returned
@return The status code, 0 on success, -1 on local failure.
*/
int sendCommand(const char* command, int param, int *responseParam=NULL);
/**
Send a command with a string parameter.
@param command The command name.
@param param The string parameter(s).
@return The status code, 0 on success, -1 on local failure.
*/
int sendCommand(const char* command, const char* param);
/**
Send a command with no parameter.
@param command The command name.
@return The status code, 0 on success, -1 on local failure.
*/
int sendCommand(const char* command);
};
/** C interface for ARFCNManager threads. */
void* ReceiveLoopAdapter(ARFCNManager*);
#endif
// vim: ts=4 sw=4