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WiMAX basic capability negotiation-SBC REQ,SBC RSP

This page describes fixed wimax basic capability negotiation outlined between BS and SS as per IEEE 802.16 MAC layer specifications. It mentions wimax SBC REQ and SBC RSP message formats.

The purpose here is that SS informs the BS of its basic capabilities. SBC REQ is transmitted by SS and received by BS. Upon receiving BS responds with SBC RSP message.

The procedure is that:
•  After completion of ranging ,the BS will wait for SBC-REQ message transmitted by the SS •  If SBC-REQ message are not received within time set by timer T9 , the BS shall release and age out Basic and Primary Management CIDs allocated.

Timer T17 - Time allowed for SS to complete authorization and key exchange.
Timer T9 - registration timeout

WiMAX SBC REQ

Following table mentions typical example of wimax SBC REQ message values transmitted by wimax compliant SS.


SBC REQ field Example Value
Generic mac header(6 bytes) 0x00, 0x40, 0x33, 0x00 ,0x08, 0xff
SBC REQ message type 0x1a
BW Allocation support(TLV format ) 0x01,0x01,0x00
Capabilities for Construction & Transmission of MAC PDUs(TLV) 0x04,0x01,0x03
SS Transition Gap(TLV) 0x02,0x02,0x00,0x00
Max. Transmit Power(TLV) 0x03,0x04,0x00,0x00,0x00,0x00
Current Transmit Power(TLV) 0x93,0x01,0x00
OFDM SS FFT sizes (TLV) 0x96,0x01,0x01
OFDM SS demodulator(TLV) 0x97,0x01,0x01
OFDM SS modulator(TLV) 0x98,0x01,0x01
OFDM SS TC sublayer support(TLV) 0x9a,0x01,0x00
CRC(4 bytes) 0x3a,0xb6,0x3e,0x60

WiMAX SBC RSP

Following table mentions typical example of wimax SBC RSP message values transmitted by Base station in response to received SBC REQ from SS.

SBC RSP field Example Value
Generic MAC Header(6 bytes) 0x00, 0x40, 0x2a, 0x00, 0x08, 0x67
SBC_RSP msg type 0x1b
Bandwidth allocation support(TLV) 0x01,0x01,0x00
capablities for construction & transmission of MAC pdus(T) 0x04,0x01,0x03
subscriber transition gaps(T) 0x02,0x02,0x32,0x32
PKM flow control(T) 0x0f,0x01,0x00
Authorization policy support(T) 0x10,0x01,0x00
max. no of supported security associations(T) 0x11,0x01,0x00
OFDM SS FFT sizes(T) 0x96,0x01,0x01
OFDM SS Demodulator(T) 0x97,0x01,0x01
OFDM SS modulator(T) 0x98,0x01,0x01
OFDM SS TC sublayer support(T) 0x9a,0x01,0x00
CRC 0x27,0x53,0x80,0xb6

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

               

RF and Wireless Terminologies


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