WiMAX network interfaces-R1, R2, R3, R4, R5, R6, R7, R8 reference points
This page covers wimax network interfaces or reference points. The interface types include R1, R2, R3, R4, R5, R6, R7, R8 reference points.
As shown in the figure below, wimax network consists of four basic entities. They are MS(Mobile Subscriber in mobile wimax) or SS(Subscriber station in fixed wimax) , NAP(Network Access Provider), NSP (Network Service Provider) and Internet. NAP takes care of providing radio access functionalities. NSP takes care of providing IP connectivity. Internet takes care of providing internet contents to the SS/MS interfaced with NSP.
wimax reference points or interface types are links which connect 2 functional entities. They are basically protocols for two entities to communicate almost similar to IP network interface types. This helps interoperability to be successful between multiple vendors' equipments. Following table describes wimax network interface types.
| WiMAX interface type | position/function if any |
|---|---|
| interface R1 | It exists between wireless subscriber station(SS) and Base Station(BS) |
| interface R2 | It exists between MS(mobile station) and CSN(connectivity service network) in mobile wimax system. EAP traffic flowing from MS to AAA server goes through R2/R3 interface. |
| interface R3 | It exists between ASN(Access Service Network) and CSN. RADIUS traffic flowing between AAA server and ASN-GW goes through R3. |
| interface R4 | This wimax interface exists between ASN and another wimax ASN. |
| interface R5 | It exists between CSN and another CSN. |
| interface R6 | It is located within ASN. It represents link between ASN-GW and BS. |
| interface R7 | It is located within ASN-GW entity. It takes care of all internal communications within gateway itself. |
| interface R8 | This wimax interface is located within an ASN and represents a link between two BSs. |
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