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T1 to T27 WiMAX timers-T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27

This page describes wimax timers T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26 and T27 wimax timer.

WiMAX Timer Function Value
Timer T1 used at SS, Wait for DCD timeout Max. value is 5*DCD interval max. value
Timer T2 Used at SS, wait for broadcast ranging timeout Max. value is 5*ranging interval
Timer T3 ranging response(RNG RSP) reception timeout following the transmission of a ranging request Default and max. value is 200ms
Timer T4 Used at SS, Wait for unicast ranging opportunity. If the pending until complete field was used earlier by this SS, then the value of that field shall be added to this interval Min. is 30 s, max. is 35 sec
Timer T5 Used at BS, wait for uplink channel change response Max. value is 2 s
Timer T6 Used at SS, wait for registration response Max. value is 3s
Timer T7 Used at SS/BS, wait for DSA/DSC/DSD response timeout Max. value is 1s
Timer T8 Used at SS/BS, wait for DSA/DSC acknowledge timeout Max. value is 300ms
Timer T9 Used at BS, registration timeout, the time allowed between BS sending a RNG RSP(success) to an SS, and receiving a SBC-REQ from that same SS Min. and default. value is 300ms
Timer T10 Used at SS/BS, wait for transaction end timeout Max. value is 3s
Timer T12 Used at SS, wait for UCD descriptor Max. value is 5*UCD interval
Timer T13 Used at BS, time allowed for an SS following receipt of a REG RSP message to send a TFTP-CPLT message to the BS Min. and default value is 15 min.
Timer T14 Used at SS, wait for DSX-RVD timeout max. value is 200ms
Timer T15 Used at BS, wait for MCA-RSP message Min. and default value is 20ms
wimax Timer T16 Used at SS, wait for bandwidth request grant Min. is 10ms, Max. value is QoS dependent
Timer T17 Used at BS, time allowed for SS to complete SS authorization and key exchange Min. is 5 min and default value is 5 min.
Timer T18 Used at SS, wait for SBC-RSP timeout Default is 50ms and Max. is less than T9
Timer T19 Used at SS, time DL channel remains unstable
Timer T20 Used at SS, time the SS searches for preambles on a given channel. Min. value is equivalent to MAC frames
Timer T21 Used at SS, time the SS searches for DLMAP on a given channel Max. value is 10s
Timer T22 Used at SS/BS, wait for ARQ reset Max. value is 0.5s
Timer T23 Used in mesh node system, network entry, detect network Min. value is 1sec
Timer T24 Used in mesh node, network entry, accumulate MSH-NCFG messages Default value is 120s
Timer T25 Used in mesh node, network entry, wait for MSH-NENT/MSH-NCFG default value is 1s
Timer T26 used at SS, wait for TFTP-RSP Min.=10ms, Default=200ms,Max.=200ms
T27 as Idle timer Used at BS, Max. time between unicast grants to SS when BS believes SS uplink transmission quality is good enough Min. value is equal to SS Ranging Response processing time
T27 as active timer Used at BS, max. time between unicast grants to SS when BS believes SS uplink transmission quality is not good enough. Min. value is equal to SS Ranging Response processing time

What is Difference between

difference between FDM and OFDM
Difference between SC-FDMA and OFDM
Difference between SISO and MIMO
Difference between TDD and FDD
Difference between 802.11 standards viz.11-a,11-b,11-g and 11-n
Bluetooth vs zigbee
Bluetooth vs zigbee
wibro vs mobile wimax
Microcontroller vs microprocessor
FDMA vs TDMA vs CDMA
FDM vs TDM
CDMA vs GSM
OFDM vs OFDMA
wimax vs lte

Links to WiMAX MAC Layer resources

REG REQ and REG RSP
SBC REQ and SBC RSP
DSA REQ and DSA RSP
UCD,UIUC,DCD,DIUC
DLMAP and ULMAP
WiMAX Ranging Procedure
WiMAX Bandwidth Request procedure
WiMAX Network Entry Procedure
WiMAX CID vs SFID
WiMAX FCH header format
WiMAX TLV Format basics
WiMAX Timers
WiMAX Network Interface types
WiMAX QoS Classes

               

Other System Timers

Engineers and testers working in multimode or multiRAT modem design consisting of multiple wireless technologies need GSM timers and WCDMA timers other than LTE timers mentioned on this page. Refer following links for the same.

•  GSM Timers
•  WCDMA Timers
•  GSM MS Timers
•  GSM BTS Timers

RF and Wireless Terminologies


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