Apparatus and method for handling error for service flow modification a broadband wireless communication network

摘要

A network includes a Mobile Station (MS) for sending a Service Flow (SF) modification request message to a Base Station (BS) to modify an SF. The BS sends a path modification request message to a serving SF Authorization (SFA) when there is the information on the SF. The BS also sends an SF modification response message comprising a Confirmation Code ‘Reject SF not found’ to the MS when there is no information on the SF. The serving SFA sends a resource reservation request message to an anchor SFA when there is the information on the SF, and sends a path modification response message comprising a Failure Indication (FI) ‘Requested Context Unavailable’ to the BS when there is no information on the SF. The anchor SFA sends a resource reservation response message comprising the FI ‘Requested Context Unavailable’ to the serving SFA when there is no information on the SF.

主权项

1. A wireless communication network supporting a Mobile Station (MS) initiated Service Flow (SF) parameter modification process, the network comprising:
a base station (BS) configured to receive an SF modification request message to modify an SF from the MS, wherein the SF modification request message includes identification information indicating the SF to change and SF parameters of a Media Access Control layer, the BS configured to determine whether the BS has information regarding the SF, send a path modification request message to a serving Service Flow Authorization (SFA) when the BS has the information regarding the SF, and send an SF modification response message which comprises a Confirmation Code (CC) “Reject SF not found’ to the MS when the BS does not have the information regarding the SF; the serving SFA configured to determine whether the serving SFA has the information regarding the SF upon receiving the path modification request message, send a resource reservation request message to an anchor SFA when the serving SFA has the information regarding the SF, and send a path modification response message that comprises a Failure Indication (FI) ‘Requested Context Unavailable’ to the BS when the serving SFA does not have the information regarding the SF; the anchor SFA configured to determine whether the anchor SFA has the information regarding the SF upon receiving the resource reservation request message, and send a resource reservation response message which comprises the H ‘Requested Context Unavailable’ to the serving SFA when the anchor SFA does not have the information regarding the SF; and wherein the MS deletes the information on the SF when receiving the SF modification response message comprising the CC ‘Reject RF not found’ from the BS, the BS deletes the information on the SF when receiving the path modification response message comprising the FI ‘Requested Context Unavailable’ from the serving SFA, and the serving SFA deletes the information on the SF when receiving the resource reservation response message comprising the FI ‘Requested Context Unavailable’ from the anchor SFA.