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AIR INTERFACE FOR FIXED BROADBAND WIRELESS ACCESS SYSTEMS

IEEE Std 802.16-2001

Manufacturer CA certificates, the SS software shall include ALL of that manufacturer’s CA certificates. The specific Manufacturer CA certificate installed by the SS (i.e., advertised in Authentication Information messages and returned by the MIB object) shall be that identifying the issuer of that modem’s SS certificate.

7.6.3 Certificate processing and management in the BS

PKM employs digital certificates to allow BSs to verify the binding between an SS’s identity (encoded in an X.509 digital certificate’s subject names) and its public key. The BS does this by validating the SS certificate’s certification path or chain. Validating the chain means verifying the Manufacturer CA Certificate through some means.

8. Physical layer

8.1 Physical layer (PHY) service specification

8.1.1 Scope

This subclause contains a generic definition of the PHY service specification applicable to all PHY options, each of which may consist of two protocol sublayers as follows:

a)A transmission CS.

b)A Physical Medium Dependent (PMD) sublayer. Each PMD sublayer may require the definition of a unique transmission CS. If the PMD sublayer already provides the defined PHY services, the transmission convergence function might be null.

A PHY may be accompanied by a physical layer management entity. The exact functions of such an entity are not specified in this standard, but in general they are responsible for such functions as gathering of layerdependent status from the various layer management entities setting the value of layer-specific parameters. The physical layer management entity would typically perform such functions on behalf of general system management entities and would implement standard management protocols.

8.1.2 PHY functions

The protocol reference model for the IEEE Std 802.16-2001 architecture is shown in Figure 1. The PHY service is provided to the MAC entity at both the BS and SS through the PHY service access point (SAP), as shown in Figure 1.

PHY service is described using a set of primitives. The primitives associated with communication between the MAC and the PHY fall into three basic categories:

a)Service primitives that support the data transfer, thus participating as intermediate signals in MAC peer-to-peer interactions. These are the PHY_MACPDU primitives.

b)Service primitives that have local significance and support sublayer-to-sublayer interactions related to layer control. These include the PHY_TXSTART primitives.

c)Service primitives that support management functions, such as the PHY_DCD primitives.

Primitives with names of the form “PHY_*.request” are generated by the MAC and addressed to the PHY to invoke some PHY function(s).

Copyright © 2002 IEEE. All rights reserved.

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