Message transmission in wireless access system

A method for supporting an idle mode operation efficiently in a wireless access system, the method comprising:

• transmitting, from a base station to a mobile station, a de-registration command (DREG-CMD) message admitting initiation of the idle mode in an unsolicited manner;
• enabling, by the base station, a de-registration response standby timer;
• setting, by the base station, a de-registration command count to a predetermined value;
• and
• enabling, by the base station, a management resource holding timer,
• wherein the base station retransmits the de-registration command message when the de-registration response standby timer is exhausted before the base station receives a de-registration request (DREG-REQ) message and the de-registration command count is not exhausted.

A base station for supporting an idle mode operation efficiently in a wireless access system, the base station comprising:

• means for transmitting a de-registration commend (DREG-CMD) message admitting initiation of the idle mode in an unsolicited manner;
• means for enabling a de-registration response standby timer and setting a de-registration command count to a predetermined value;
• and
• means for enabling a management resource holding timer,
• wherein the base station retransmits the de-registration command message when the de-registration response standby timer is exhausted before the base station receives a de-registration request (DREG-REQ) message and the de-registration command count is not exhausted.

A method for supporting an idle mode operation efficiently in a wireless access system, the method comprising:

• receiving, at a base station from a mobile station, a de-registration request (DREG-REQ) message requesting the initiation of the idle mode;
• transmitting, by the base station to the mobile station, a de-registration command (DREG-CMD) acknowledging the initiation of the idle mode;
• and
• enabling, at the base station, a management resource holding timer;
• wherein the base station releases management resources with the mobile station when the management resource holding timer is expired.

A base station for supporting an idle mode initiation of a mobile station in a wireless access system, the base station comprising:

• means for receiving a de-registration request (DREG-REQ) message requesting the idle mode initiation;
• means for transmitting a de-registration command (DREG-CMD) message acknowledging the idle mode initiation;
• and
• means for enabling a management holding timer,
• wherein the base station releases management resources with the mobile station when the management resource holding timer is expired.