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IEEE Std 802.16-2001

LOCAL AND METROPOLITAN AREA NETWORKS—PART 16:

6.1.1 Primitives

The IEEE Std 802.16-2001 MAC supports the following primitives at the MAC SAP:

MAC_CREATE_CONNECTION.request

MAC_CREATE_CONNECTION.indication

MAC_CREATE_CONNECTION.response

MAC_CREATE_CONNECTION.confirmation

MAC_CHANGE_CONNECTION.request

MAC_CHANGE_CONNECTION.indication

MAC_CHANGE_CONNECTION.response

MAC_CHANGE_CONNECTION.confirmation

MAC_TERMINATE_CONNECTION.request

MAC_TERMINATE_CONNECTION.indication

MAC_TERMINATE_CONNECTION.response

MAC_TERMINATE_CONNECTION.confirmation

MAC_DATA.request

MAC_DATA.indication

The use of these primitives to provide peer communication is shown in Figure 17. The initial request for service from a lower layer is provided by the “request” primitive. When this request is sent across the air link to the peer MAC sublayer, it generates an “indicate” primitive to inform the peer CS of the request; the convergence entity responds with a “response” to the MAC. Again this is sent across the air link to the MAC on the originating side, which sends a “confirm” primitive to the original requesting entity.

Convergence Sublayer

Request 4

MAC Sublayer

1 Confirmation

Convergence Sublayer

Response 2

MAC Sublayer

3 Indication

Figure 17—Use of primitives to request service of MAC sublayer and generate response

In some cases, it is not necessary to send information to the peer station and the “confirm” primitive is issued directly by the MAC on the originating side. Such cases may occur, for example, when the request is rejected by the MAC on the requesting side. In cases where it is necessary to keep the other side of the link informed, an unsolicited “response” may be sent, in turn leading to the generation of an unsolicited “confirmation” for benefit of the CS.

For actions other than DATA.request and DATA.indication, the initiating CS sends a REQUEST primitive to its MAC sublayer. The initiating side MAC sublayer sends the appropriate dynamic service request message (addition, change, or deletion; see 6.2.13.8) to the receiving MAC. The non-initiating side MAC sends an INDICATION primitive to its CS. The noninitiating CS responds with a RESPONSE primitive, stimulating its MAC to respond to the initiating side MAC with the appropriate Dynamic Service Response message. The initiating side MAC responds to its CS with a CONFIRMATION primitive and, if appropriate, with the appropriate dynamic service acknowledge message. At any point along the way, the request may be rejected (for lack of resources, etc.), terminating the protocol.

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Copyright © 2002 IEEE. All rights reserved.

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