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IEEE Std 802.16-2001

LOCAL AND METROPOLITAN AREA NETWORKS—PART 16:

8.1.3.27.3 When generated

It is generated at the PHY PDU end in the air.

8.1.3.27.4 Effect of receipt

None.

8.1.3.28 Data transfer related primitives example

Figure 105 and Figure 106 illustrate possible scenarios for invocation of data transfer related primitives. Depending on the PHY interface with the MAC, MAC PDU transmission may occur after the accumulation of several MAC PDUs due to PHY specific buffering restrictions (e.g., FEC codeword length). In these cases, transmission events and reception events in Figure 105 should be interpreted as actual queuing events, while transmission and reception occurs according to transmission buffer and reception buffer status.

BS MAC

BS PHY

SS PHY

SS MAC

 

PHY_TXSTART.request

 

 

 

 

 

 

 

 

 

 

PHY_TXSTART.confirmation

 

 

 

 

 

 

 

 

 

 

 

 

Tx Period

 

 

 

 

 

 

 

 

 

Rx Period

 

 

 

 

 

 

 

Started

 

 

 

 

 

 

 

PHY_MACPDU.request

 

 

 

 

 

 

Started

 

 

 

 

 

 

 

 

 

PHY_TXSTART.indication

 

 

 

 

First

 

First

 

 

 

 

 

MACPDU

 

 

 

 

 

 

 

Transmitted

 

MACPDU

 

 

PHY_MACPDU.confirmation

 

 

 

 

 

 

Received

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PHY_MACPDU.request

 

 

 

 

Downlink Burst

 

 

PHY_MACPDU.confirmation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

...

PHY_TXEND.indication

PHY_RXSTART.request

PHY_RXSTART.confirmation

PHY_RXSTART.indication

PHY_MACPDU.indication

PHY_MACPDU.indication

...

PHY_RXEND.indication

Figure 105—Example of usage of primitives during downlink PHY PDU transfer

212

Copyright © 2002 IEEE. All rights reserved.

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