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IEEE Std 802.16-2001

LOCAL AND METROPOLITAN AREA NETWORKS—PART 16:

Primitives with names of the form “PHY_*.confirmation” are generated by the PHY and addressed to the MAC to acknowledge a previously received “PHY_*.request” primitive.

Primitives with names of the form “PHY_*.indication” are generated by the PHY and addressed to the MAC as a result of some PHY event.

8.1.3 PHY SAP management

This topic covers PHY SAP service primitives related to physical layer management. Physical layer management functions include frequency adjustment, power management, propagation delay compensation, etc.

8.1.3.1 PHY MIB and generic SET/GET primitives

The management information specific to PHY is represented as a management information base (MIB) for this layer. The physical layer management entity is viewed as “containing” the MIB for this layer. The generic model of MIB-related management is to allow the management system (that is out of scope of this standard) to either GET the value of a MIB attribute, or to SET the value of a MIB attribute. The setting act may require that the layer entity perform certain defined actions.

The same way, PHY SAP may have a set of primitives of the following types:

PHY_GET.request (MIBattribute)

Requests the value of the given (PHY) MIBattribute.

PHY_GET.confirm (status, MIBattribute, MIBattributevalue)

Returns the appropriate MIB attribute value if status = “success,” otherwise returns an error indication in the Status field. Possible error status values include “invalid MIB attribute” and “attempt to get write-only MIB attribute.”

PHY_SET.request (MIBattribute, MIBattributevalue)

Requests that the indicated MIB attribute be set to the given value. If this MIBattribute implies a specific action, then this requests that the action be performed.

PHY_SET.confirm (status, MIBattribute)

If status = “success,” this confirms that the indicated MIB attribute was set to the requested value, otherwise it returns an error condition in status field. If this MIBattribute implies a specific action, then this confirms that the action was performed. Possible error status values include “invalid MIB attribute” and “attempt to set read-only MIB attribute.”

8.1.3.2 Parameter sets (vectors)

Several service primitives use parameter vectors. Such a vector is a list of values that may be certain MIB parameters or may be derived by the PHY from MIB parameters or from measurement of the airlink characteristics. The list itself and the set of possible parameter values may vary depending on the PHY details.

A vector may be transferred between the PHY and the MAC as a parameter of a certain primitive. PHY SAP service primitives use the following vectors:

SCHED_PARAM_VECTOR—the set of PHY parameters that are related to scheduling, such as symbol duration

DCD_PARAM_VECTOR—the set of PHY parameters related to downlink channel configuration, such as central frequency and active set of burst profiles

UCD_PARAM_VECTOR—the set of PHY parameters related to uplink channel configuration, such as central frequency and active set of burst profiles

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Copyright © 2002 IEEE. All rights reserved.

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