WiMAX: Technology for Broadband Wireless Access

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UCD, Uplink Channel Descriptor

Transmitted by the BS at a periodic time interval to provide the burst profiles (physical parameters sets) that can be used by an uplink physical channel during a brust in addition to other uplink channel parameters

Broadcast

1

DCD, Downlink Channel Descriptor

Transmitted by the BS at a periodic time interval to provide the burst profiles (physical parameters sets) that can be used by a downlink physical channel during a burst in addition to other downlink channel parameters

Broadcast

2

DL-MAP, Downlink MAP

Downlink access definition. In a DL-MAP, for each downlink burst, DL-MAP_IE indicates the start time and the burst profile (channel details including physical attributes) of this burst

Broadcast

3

UL-MAP Uplink MAP

Uplink access definition. In a UL-MAP, for each uplink burst, UL-MAP_IE indicates the start time, the duration and the burst profile (channel detailes including physical attributes) of this burst

Broadcast

39

MSH-NCFG, Mesh Network Configuration

Provides a basic level of communication between nodes in different nearby networks, whether from the same or different equipment vendors or wireless operators. Among others, the Network Descriptor is an embedded data of the MESH-NCFG message. The Network Descriptor contains many channel parameters (modulation and coding schemes, threshold values, etc.) which makes it similar to UCD and DCD

Broadcast

40

MSH-NENT, Mesh Network Entry

Provides the means for a new node to gain synchronisation and initial network entry into a Mesh network

Basic

41

MSH-DSCH, Mesh Distributed Schedule

Transmitted in the Mesh mode when using distributed scheduling. In coordinated distributed scheduling, all the notes transmit a MSH-DSCH at a regular interval to inform all the neighbours of the schedule of the transmitting station

Broadcast

42

MSH-CSCH, Mesh Centralised Schedule

A MSH-CSCH message is created by a Mesh BS when using centralised scheduling. The BS broadcasts the MSH-CSCH message to all its neighbours and all the nodes with a hop count lower than a given threshold forward the MSH-CSCH message to neighbours that have a higher hop count. This message is used to request or grant bandwidth

Broadcast

43

MSH-CSCF, Mesh Centralised Schedule Configuration

A MSH-CSCF message is broadcasted in the Mesh mode when using centralised scheduling. The Mesh BS broadcasts the MSH-CSCF message to all its neighbours. All nodes forward (rebroadcast) the message according to its index number specified in the message

Broadcast

21

MCA-REQ, Multicast Assignment Request

The BS may add (or remove) an SS to a multicast polling group, identified by a multicast CID, by sending an MCA-REQ message with the join (or leave) command.

Primary management

22

MCA-RSP, Multicast Assignment Response

Sent by the SS in response to an MCA-REQ. Contains mainly the Confirmation Code, indicating whether the request was successful

Primary management

33

ARQ-Feedback, Standalone ARQ Feedback message

Standalone ARQ Feedback message. The ARQ-Feedback message can be used to signal any combination of different ARQ ACKs (cumulative, selective, selective with cumulative)

Basic

34

ARQ-Discard, ARQ Discard message

Sent by the transmitted when it wants to skip a certain number of ARQ blocks in the ARQ Transmission Window

Basic

35

ARQ-Reset,ARQ Reset message

Sent by the transmitter or the receiver of an ARQ-enabled transmission in order to reset the parent connection's ARQ transmitter and receiver state machines

Basic

4

RNG-REQ, Ranging Request

Transmitted by the SS at initialisation. It can also be used at other periods to determine the network delay and to request a power and/or downlink burst profile change

Initial ranging or Basic

5

RNG-RSP, Ranging Response

Transmitted by the BS in response to a received RNG-REQ. It may also be transmitted asynchronously to send corrections based on measurements that have been made on other received data or MAC messages

Initial ranging or Basic

23

DBPC-REQ, Downlink Burst Profile Change Request

Sent by the SS to the BS on the SS Basic CID to request a change in the downlink burst profile used by the BS to transport data to the SS

Basic

24

DBPC-RSP, Downlink Burst Profile Change Response

Transmitted by the BS on the SS Basic CID in response to a DBPC-REQ message from the SS. If the (required) DIUC parameter is the same as requested in the DBPC-REQ message, then the request was accepted. Otherwise, the DIUC parameter of DBPC-RSP is the previous DIUC at which the SS was receiving downlink data

Basic

11

DSA-REQ, Dynamic Service Addition Request

Sent by an SS or BS to create a new service flow. Service flow attributes, including QoS parameters are indicated

Primary Management

12

DSA-RSP, Dynamic Service Addition Response

Generated in response to a received DSA-REQ; indicates whether the creation of the service flow was successful or rejected

Primary management

13

DSA-ACK, Dynamic Service Addition Acknowledge

Generated in response to a received DSA-RSP

Primary management

14

DSC-REQ, Dynamic Service Change Request

Sent by an SS or BS to change dynamically the parameters of an existing service flow

Primary management

15

DSC-RSP, Dynamic Service Change Response

Generated in response to a received DSC-REQ

Primary management

16

DSC-ACK, Dynamic Service Addition Acknowledge

Generated in response to a received DSC-RSP

Primary management

17

DSD-REQ, Dynamic Service Deletion Request

Sent by an SS or BS to delete an existing service flow

Primary management

18

DSD-RSP, Dynamic Service Deletion Response

Generated in response to a received DSD-REQ

Primary management

30

DSX-RVD, DSx Received Message

Generated by the BS to inform the SS that the BS has correctly received a DSx (DSA or DSC)-REQ message. The DSx-RSP message is transmitted only after the DSx-REQ is authenticated

Primary management

26

SBC-REQ, SS Basic Capability Request

Transmitted by the SS during initialisation to inform the BS of its basic capabilities; mainly Physical Parameters and Bandwidth Allocation supported

Basic

27

SBC-RSP, SS Basic Capability Response

Transmitted by the BS in response to an SBC-REQ. Indicates the intersection of the SS and the BS capabilities

Basic

6

REG-REQ, Registration Request

Sent by the SS in order to register with the BS. Indicates supported management parameters, CS capabilities, IP mode, etc.

Primary management

7

REG-RSP, Registration Response

Sent by the BS in response to a REG-REQ message. Confirms or not authentication. Responds to reg-req capability indications.

Primary management

29

DREG-CMD, De/Re-registration Command

Transmitted by the BS to force the SS to change its access state (stop using the current channel, use it again, use it with restrictions, etc.) Unsolicited or in response to an SS DREG-REQ message

Basic

49

DREG-REQ, SS De-registration Request message

Sent by the SS to the BS in order to notify the BS of the SS de-registration request from the BS and the network

Basic

25

RES-CMD, Reset Command

Transmitted by the BS to force the SS to reset itself, reinitialise its MAC and repeat initial system access

Basic

31

TFTP-CPLT, Config File TFTP Complete message

When the configuration file TFTP download has completed successfully, the SS notifies the BS by transmitting a TFTP-CPLT message

Primary management

32

TFTP-RSP, Config File TFTP Complete Response

In response to TFTP-CPLT, the BS (normally) sends a TFTP-RSP message with an ‘OK’ response

Primary management

36

REP-REQ, channel measurement Report Request

Sent by the BS to the SS in order to require RSSI (received power level) and CINR channel measurement reports. In license-exempt bands, the REP-REQ message is also used to request the results of the DFS measurements that the BS has previously scheduled

Basic

37

REP-RSP, channel measurement Report Response

Contains the measurement report in accordance with the Report Request

Basic

38

FPC, Fast Power Control

Broadcast by the BS in order to adjust the power levels of multiple SSs simultaneously. The SSs apply the indicated change within the ‘SS downlink management message FPC processing time’. Implementation of the FPC is optional. Power control is normally realised by periodic ranging

Broadcast

9

PKM-REQ, Privacy Key Management Request

Transmits a PKM (Privacy Key Management) protocol message from the PKM client, the SS to the PKM server, the BS

Primary management

10

PKM-RSP, Pricacy Key Management Response

Transmits a PKM protocol message from the PKM server, the BS to the PKM client, the SS

Primary management

44

AAS-FBCK-REQ

AAS Feedback Request

Basic

45

AAS-FBCK-RSP

AAS Feedback Response

Basic

46

AAS-Beam_Select

AAS Beam Select message

Basic

47

AAS-BEAM_REQ

AAS Beam Request message

Basic

48

AAS-BEAM_RSP

AAS Beam Response message

Basic

28

CLK-CMP, SS network Clock Comparison

For service flows carrying information that requires the SSs to reconstruct their network clock signals (ee.g. Bell-Labs DS1, also known as T1, 1.536Mb/s circuit transmission system), CLK-CMP messages are periodically broadcast by the BS

Broadcast