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IEEE Std 802.16-2001

LOCAL AND METROPOLITAN AREA NETWORKS—PART 16:

8.2.6.1.3 Required UCD parameters

The following parameters shall be included in the UCD message:

Preamble Length

The following parameters may be included in the UCD message and if absent shall have their default values:

SS Transition Gap

Roll-off Factor

Uplink Symbol Rate and Frequency are implied by downlink frequency.

8.2.6.1.4 Uplink channel

Since SSs do not transmit in the uplink channel until they have received some minimal configuration information from the BS, it is possible to support several different configurations that can be adjusted on an uplink channel basis or on a burst by burst basis. These parameters, and their ranges, are supported through MAC sublayer signaling, as described in 6.2.2.3.3.

8.2.6.1.5 Uplink_Burst_Profile

Each Uplink_Burst_Profile in the UCD message (6.2.2.3.3) shall include the following parameters:

Modulation type

FEC Code Type

Last codeword length

Preamble Length

Scrambler Seed

If the FEC Code Type is 1, 2, or 3 (RS codes), the Uplink_Burst_Profile shall also include

RS information bytes (K)

RS parity bytes (R)

If the FEC Code Type is 2, the Uplink_Burst_Profile shall also include

BCC code type

If the FEC Code Type is 4, the Uplink_Burst_Profile shall also include

BTC row code type

BTC column code type

BTC interleaving type

250

Copyright © 2002 IEEE. All rights reserved.

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