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AIR INTERFACE FOR FIXED BROADBAND WIRELESS ACCESS SYSTEMS

IEEE Std 802.16-2001

10.2 PKM parameter values

Table 119 defines the ranges and default values for the PKM configuration and operational parameters.

Table 119—Operational ranges for privacy configuration settings

System

Name

Description

Minimum

Default

Maximum

value

value

value

 

 

 

 

 

 

 

 

 

BS

AK Lifetime

Lifetime, in seconds, BS assigns

1 day

7 days

70 days

to new Authorization Key

(86,400 s)

(604,800 s)

(6,048,000 s)

 

 

 

 

 

 

 

 

BS

TEK Lifetime

Lifetime, in seconds, BS assigns

30 min

12 h

7 days

to new TEK

(1800 s)

(43,200 s)

(604,800 s)

 

 

 

 

 

 

 

 

SS

Authorize Wait

Auth Req retransmission inter-

2 s

10 s

30 s

Timeout

val from Auth Wait state

 

 

 

 

 

 

 

 

 

 

SS

Reauthorize Wait

Auth Req retransmission interval

2 s

10 s

30 s

Timeout

from Reauth Wait state

 

 

 

 

 

 

 

 

 

 

SS

Authorization

Time prior to Authorization expi-

5 min

10 min

35 days

Grace Time

ration SS begins reauthorization

(300 s)

(600 s)

(3,024,000 s).

 

 

 

 

 

 

 

SS

Operational Wait

Key Req retransmission interval

1 s

1 s

10 s

Timeout

from Op Wait state

 

 

 

 

 

 

 

 

 

 

SS

Rekey Wait Time-

Key Req retransmission interval

1 s

1 s

10 s

out

from Rekey Wait state

 

 

 

 

 

 

 

 

 

 

SS

TEK Grace Time

Time prior to TEK expiration SS

5 min

1 h

3.5 days

begins rekeying

(300 s)

(3,600 s)

(302,399 s)

 

 

 

 

 

 

 

 

 

Authorize Reject

Delay before resending Auth

 

 

10 min

SS

Request after receiving Auth

10 s

60 s

Wait Timeout

(600 s)

 

Reject

 

 

 

 

 

 

 

 

 

 

 

 

 

For the purposes of protocol testing, it is useful to run the privacy protocol with timer values well below the low end of the operational ranges. The shorter timer values “speed up” privacy’s clock, causing privacy protocol state machine events to occur far more rapidly than they would under an “operational” configuration. While privacy implementations need not be designed to operate efficiently at this accelerated privacy pace, the protocol implementation should operate correctly under these shorter timer values. Table 120 provides a list of shortened parameter values which are likely to be employed in protocol conformance and certification testing.

Table 120—Values for privacy configuration setting for protocol testing

Parameter

Shortened Value

 

 

AK Lifetime

5 min (300 s)

 

 

TEK Lifetime

3 min (180 s)

 

 

Authorization Grace Time

1 min (60 s)

 

 

TEK Grace time

1 min (60 s)

 

 

The TEK Grace Time shall be less than half the TEK lifetime.

Copyright © 2002 IEEE. All rights reserved.

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