33 #include "ns3/simulator.h"
34 #include "ns3/uinteger.h"
81 .SetGroupName(
"Wimax")
86 std::list<OfdmUlMapIe>
102 uint32_t randNr = rand();
103 if (randNr % 5 == 0 ||
GetBs()->GetNrDcdSent() == 0)
109 if (randNr % 5 == 0 ||
GetBs()->GetNrUcdSent() == 0)
138 if (timeSinceLastDcd >
GetBs()->GetDcdInterval())
144 if (timeSinceLastUcd >
GetBs()->GetUcdInterval())
154 return GetBs()->GetNrDlSymbols() *
GetBs()->GetPhy()->GetPsPerSymbol() +
GetBs()->GetTtg();
159 const uint32_t& allocationSize,
160 uint32_t& symbolsToAllocation,
161 uint32_t& availableSymbols)
166 symbolsToAllocation += allocationSize;
167 availableSymbols -= allocationSize;
176 bool allocationForDsa =
false;
178 uint32_t symbolsToAllocation = 0;
179 uint32_t allocationSize = 0;
180 uint32_t availableSymbols =
GetBs()->GetNrUlSymbols();
184 std::vector<SSRecord*>* ssRecords =
GetBs()->GetSSManager()->GetSSRecords();
185 for (
auto iter = ssRecords->begin(); iter != ssRecords->end(); ++iter)
203 allocationSize =
GetBs()->GetRangReqOppSize();
206 if (availableSymbols >= allocationSize)
220 ulMapIe.
SetUiuc(
GetBs()->GetBurstProfileManager()->GetBurstProfile(
230 if (!allocationForDsa)
233 GetBs()->GetPhy()->GetNrSymbols(
sizeof(
DsaReq), modulationType);
235 if (availableSymbols >= allocationSize)
241 allocationForDsa =
true;
264 if (availableSymbols)
274 if (availableSymbols)
284 if (availableSymbols)
296 if (availableSymbols)
306 if (availableSymbols)
316 if (availableSymbols)
337 GetBs()->GetBandwidthManager()->SetSubframeRatio();
345 uint32_t& symbolsToAllocation,
346 uint32_t& availableSymbols)
348 uint32_t allocationSize = 0;
349 uint8_t uiuc = ulMapIe.
GetUiuc();
350 std::vector<ServiceFlow*> serviceFlows = ssRecord->
GetServiceFlows(schedulingType);
352 for (
auto iter = serviceFlows.begin(); iter != serviceFlows.end(); ++iter)
362 GetBs()->GetBandwidthManager()->CalculateAllocationSize(ssRecord, serviceFlow);
371 if (bps < serviceFlow->GetMinReservedTrafficRate())
385 if (availableSymbols < allocationSize)
390 if (allocationSize > 0)
406 <<
", SFID: " << serviceFlow->
GetSfid());
418 uint32_t& symbolsToAllocation,
419 uint32_t& availableSymbols)
421 std::vector<ServiceFlow*> serviceFlows = ssRecord->
GetServiceFlows(schedulingType);
423 for (
auto iter = serviceFlows.begin(); iter != serviceFlows.end(); ++iter)
442 uint32_t& symbolsToAllocation,
443 uint32_t& availableSymbols)
445 uint32_t allocSizeBytes = 0;
446 uint32_t allocSizeSymbols = 0;
447 uint16_t sduSize = 0;
453 if (requiredBandwidth > 0)
458 allocSizeBytes = sduSize;
459 allocSizeSymbols =
GetBs()->GetPhy()->GetNrSymbols(sduSize, modulationType);
463 allocSizeBytes = requiredBandwidth;
464 allocSizeSymbols =
GetBs()->GetPhy()->GetNrSymbols(requiredBandwidth, modulationType);
467 if (availableSymbols >= allocSizeSymbols)
488 uint32_t& availableSymbols)
498 if (timeSinceLastIrInterval +
GetBs()->GetPhy()->GetFrameDuration() >
499 GetBs()->GetInitialRangingInterval() &&
500 availableSymbols >= allocationSize)
504 ulMapIeIr.
SetCid((
GetBs()->GetBroadcastConnection())->GetCid());
508 NS_LOG_DEBUG(
"BS uplink scheduler, initial ranging allocation, size: "
509 << allocationSize <<
" symbols"
510 <<
", modulation: BPSK 1/2");
515 GetBs()->MarkRangingOppStart(
517 Seconds(symbolsToAllocation *
GetBs()->GetSymbolDuration().GetSeconds()) +
519 GetBs()->GetSymbolDuration().GetSeconds()));
530 uint8_t delayNrFrames = 1;
533 uint32_t bytesPerFrame =
534 (uint32_t((
double)(bitsPerSecond)*
GetBs()->GetPhy()->GetFrameDuration().GetSeconds())) / 8;
535 uint32_t frameDurationMSec =
GetBs()->GetPhy()->GetFrameDuration().GetMilliSeconds();
548 uint32_t grantSize =
GetBs()->GetPhy()->GetNrSymbols(bytesPerFrame, modulation);
553 if (toleratedJitter > frameDurationMSec)
555 delayNrFrames = (uint8_t)(toleratedJitter / frameDurationMSec);
558 uint16_t interval = delayNrFrames * frameDurationMSec;
563 if (serviceFlow->
GetSduSize() > bytesPerFrame)
565 delayNrFrames = (uint8_t)(serviceFlow->
GetSduSize() / bytesPerFrame);
568 uint16_t interval = delayNrFrames * frameDurationMSec;
596 uint32_t grantedBandwidth = 0;
This class implements the bandwidth-request mac Header as described by IEEE Standard for Local and me...
static Cid InitialRanging()
This class implements the DSA-REQ message described by "IEEE Standard for Local and metropolitan area...
This class implements the UL-MAP_IE message as described by "IEEE Standard for Local and metropolitan...
void SetStartTime(uint16_t startTime)
Set start time.
uint8_t GetUiuc() const
Get UIUC.
void SetDuration(uint16_t duration)
Set duration.
void SetCid(const Cid &cid)
Set CID.
void SetUiuc(uint8_t uiuc)
Set UIUC.
Smart pointer class similar to boost::intrusive_ptr.
This class is used by the base station to store some information related to subscriber station in the...
Cid GetBasicCid() const
Get basic CID.
WimaxNetDevice::RangingStatus GetRangingStatus() const
Get ranging status.
bool GetPollForRanging() const
Get poll for ranging.
std::vector< ServiceFlow * > GetServiceFlows(ServiceFlow::SchedulingType schedulingType) const
Get service flows.
bool GetAreServiceFlowsAllocated() const
Check if service flows are allocated.
bool GetIsBroadcastSS() const
Get is broadcast SS.
WimaxPhy::ModulationType GetModulationType() const
Get modulation type.
This class implements service flows as described by the IEEE-802.16 standard.
uint32_t GetSfid() const
Get SFID.
ServiceFlow::SchedulingType GetSchedulingType() const
Get scheduling type.
SchedulingType
section 11.13.11 Service flow scheduling type, page 701
uint32_t GetMinReservedTrafficRate() const
Get minimum reserved traffic rate.
uint8_t GetSduSize() const
Get SDU size.
WimaxPhy::ModulationType GetModulation() const
Get modulation.
void SetUnsolicitedGrantInterval(uint16_t unsolicitedGrantInterval)
Set unsolicited grant interval.
ServiceFlowRecord * GetRecord() const
Get service flow record.
void SetUnsolicitedPollingInterval(uint16_t unsolicitedPollingInterval)
Set unsolicited polling interval.
bool GetIsMulticast() const
Get is multicast.
uint32_t GetToleratedJitter() const
Get tolerated jitter.
Ptr< WimaxConnection > GetConnection() const
Can return a null connection is this service flow has not been associated yet to a connection.
this class implements a structure to manage some parameters and statistics related to a service flow
Time GetGrantTimeStamp() const
uint32_t GetRequestedBandwidth() const
void SetGrantSize(uint32_t grantSize)
Set the grant size (only for UGS service flows)
uint32_t GetGrantedBandwidth() const
void SetBwSinceLastExpiry(uint32_t bwSinceLastExpiry)
set BW since last expiry
void UpdateGrantedBandwidth(uint32_t grantedBandwidth)
update the granted bandwidth
uint32_t GetBwSinceLastExpiry() const
void SetGrantTimeStamp(Time grantTimeStamp)
Set the grant time stamp.
void SetGrantedBandwidth(uint32_t grantedBandwidth)
set the granted bandwidth
static Time Now()
Return the current simulation virtual time.
Simulation virtual time values and global simulation resolution.
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Virtual class for uplink scheduler.
virtual void SetUcdTimeStamp(Time ucdTimeStamp)
Set UCD timestamp.
virtual void SetDcdTimeStamp(Time dcdTimeStamp)
Set DCD timestamp.
virtual void SetNrIrOppsAllocated(uint8_t nrIrOppsAllocated)
Set the number of IR opps allocated.
virtual void SetBs(Ptr< BaseStationNetDevice > bs)
Set base station device.
virtual void SetIsIrIntrvlAllocated(bool isIrIntrvlAllocated)
Set if the IR interval is allocated.
virtual uint8_t GetNrIrOppsAllocated() const
virtual void SetIsInvIrIntrvlAllocated(bool isInvIrIntrvlAllocated)
Set if the Inv IR interval is allocated.
virtual Time GetTimeStampIrInterval()
virtual Time GetDcdTimeStamp() const
virtual void SetTimeStampIrInterval(Time timeStampIrInterval)
Set timestamp IR interval.
virtual Ptr< BaseStationNetDevice > GetBs()
virtual Time GetUcdTimeStamp() const
Uplink Scheduler - simplified.
void SetupServiceFlow(SSRecord *ssRecord, ServiceFlow *serviceFlow) override
Setup service flow function.
void OnSetRequestedBandwidth(ServiceFlowRecord *sfr) override
Set requested bandwidth function.
void AddUplinkAllocation(OfdmUlMapIe &ulMapIe, const uint32_t &allocationSize, uint32_t &symbolsToAllocation, uint32_t &availableSymbols) override
Add uplink allocation.
uint32_t CalculateAllocationStartTime() override
std::list< OfdmUlMapIe > m_uplinkAllocations
uplink allocations
~UplinkSchedulerSimple() override
void ServiceBandwidthRequests(const SSRecord *ssRecord, ServiceFlow::SchedulingType schedulingType, OfdmUlMapIe &ulMapIe, const WimaxPhy::ModulationType modulationType, uint32_t &symbolsToAllocation, uint32_t &availableSymbols) override
Service Bandwidth Requests function.
std::list< OfdmUlMapIe > GetUplinkAllocations() const override
static TypeId GetTypeId()
Get the type ID.
void AllocateInitialRangingInterval(uint32_t &symbolsToAllocation, uint32_t &availableSymbols) override
Allocate Initial Ranging Interval function.
void ProcessBandwidthRequest(const BandwidthRequestHeader &bwRequestHdr) override
Process bandwidth request function.
void Schedule() override
Schedule function.
void GetChannelDescriptorsToUpdate(bool &updateDcd, bool &updateUcd, bool &sendDcd, bool &sendUcd) override
Determines if channel descriptors sent in the current frame are required to be updated.
void ServiceUnsolicitedGrants(const SSRecord *ssRecord, ServiceFlow::SchedulingType schedulingType, OfdmUlMapIe &ulMapIe, const WimaxPhy::ModulationType modulationType, uint32_t &symbolsToAllocation, uint32_t &availableSymbols) override
Service Unsolicited Grants function.
void InitOnce() override
Init once function.
@ RANGING_STATUS_CONTINUE
ModulationType
ModulationType enumeration.
#define NS_FATAL_ERROR(msg)
Report a fatal error with a message and terminate.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Time Seconds(double value)
Construct a Time in the indicated unit.
Every class exported by the ns3 library is enclosed in the ns3 namespace.