# US 7,609,638 B2 · Message transmission in wireless access system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,609,638 B2 - Document ID: US7609638B2 - Status: Granted - Kind: B2 - Application number: 11/242,814 - Filed: 2005-10-03 - Published: 2006-04-20 - Granted: 2009-10-27 - Earliest claimed: 2005-10-03 - Assignees: LG Electronics Inc. - Inventors: Beom Joon Kim; Ki Seon Ryu; Yong Ho Kim; Yong Won Kwak - Web page: https://patentgrep.com/patent/US7609638B2 ## CPC - H04W 60/06: De-registration or detaching - H04L 1/1848: {Time-out mechanisms} - H04L 1/188: {Time-out mechanisms} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for transmitting messages to alter the operating status between a mobile station and a base station in a wireless access system comprises, at the mobile station, transmitting a first message to the base station, setting a first count to a first predetermined value and enabling a first, the first message requesting a alteration in operating status between the mobile station and the base station, whereupon expiration of the first timer before receiving a second message from the base station, the count is decremented and, if the count is above a second predetermined value, the first timer is reset and the first message is retransmitted to the base station. The method also comprises, at a base station, receiving the first message, transmitting a second message to the mobile station and enabling a second timer, whereupon expiration of the second timer, the alteration in operating status is effected. ## Claims ### Claim 1 A method of transmitting and receiving messages to initiate an idle mode of a mobile station in a wireless access system, the method comprising: at the mobile station, transmitting a de-registration request (DREG-REQ) message for requesting the idle mode initiation to a base station, setting a de-registration request retransmission count to a predetermined value and enabling a de-registration command standby timer, wherein the mobile station retransmits the de-registration request message to the base station when the de-registration command standby timer is expired before receiving a de-registration command (DREG-CMD) message from the base station and the de-registration request retransmission count is not exhausted; and at a base station, receiving the de-registration request message, transmitting the de-registration command message acknowledging the idle mode initiation to the mobile station and enabling a management resource holding timer, wherein the base station releases management resources with the mobile station when the management resource holding timer is expired. ### Claim 2 (depends on 1) The method of claim 1, wherein the base station retransmits the de-registration command message to the mobile station and resets the management resource holding timer, when the base station receives the de-registration request message retransmitted by the mobile station before expiration of the management resource holding timer. ### Claim 3 (depends on 1) The method of claim 1, wherein the de-registration request message comprises a de-registration request code which is set to 0x01 for requesting deregistration from the base station and initiation of the idle mode. ### Claim 4 (depends on 1) The method of claim 1, wherein the de-registration command message comprises an action code which is set to 0x05 to admit the idle mode initiation. ### Claim 5 (depends on 1) The method of claim 1, wherein the de-registration command standby timer is reset and the de-registration request retransmission count is decremented when the mobile station retransmits the de-registration request message to the base station. ### Claim 6 (depends on 1) The method of claim 1, further comprising: at the mobile station, entering the idle mode in response to receiving the de-registration command message from the base station. ### Claim 7 (depends on 1) The method of claim 1, wherein the management resources comprise connection information. ### Claim 8 (depends on 7) The method of claim 7, wherein the connection information comprises information related with at least one of a basic connection, a primary connection, and a secondary connection. ### Claim 9 A mobile station for transmitting and receiving messages to initiate an idle mode of the mobile station in a wireless access system, the mobile station comprising means for: transmitting a de-registration request (DREG-REQ) message for requesting the idle mode initiation to a base station; setting a de-registration request retransmission count to a predetermined value; enabling a de-registration command standby timer; and receiving a de-registration command (DREG-CMD) message acknowledging the idle mode initiation from the base station, wherein the mobile station retransmits the de-registration request message to the base station when the de-registration command standby timer is expired before receiving the de-registration command message from the base station and the de-registration request retransmission count is not exhausted, wherein management resources of the mobile station are released when a management resource holding timer of the base station expires. ### Claim 10 (depends on 9) The mobile station of claim 9, wherein the de-registration command standby timer is reset and the de-registration request retransmission count is decremented when the mobile station retransmits the de-registration request message. ### Claim 11 A method for transmitting and receiving messages to initiate an idle mode of a mobile station in a wireless access system, the method comprising: transmitting, by the mobile station to a base station, a de-registration request (DREG-REQ) message requesting the idle mode initiation; setting a de-registration request retransmission count to a predetermined value; enabling a de-registration command standby timer awaiting a de-registration command (DREG-CMD) message from the base station; and retransmitting the de-registration request message to the base station when the de-registration command standby timer is expired before receiving the de-registration command message and the de-registration request retransmission count is not exhausted, wherein the de-registration command message acknowledges the idle mode initiation of the mobile station, wherein management resources of the mobile station are released when a management resource holding timer of the base station expires. ### Claim 12 (depends on 11) The method of claim 11, wherein the step of retransmitting further comprises: resetting the de-registration command standby timer when the mobile station retransmits the de-registration request message to the base station. ### Claim 13 (depends on 12) The method of claim 12, wherein the de-registration request retransmission count is decremented when the mobile station retransmits the de-registration request message to the base station. ### Claim 14 (depends on 11) The method of claim 11, further comprising: entering, at the mobile station, the idle mode in response to receiving the de-registration command message from the base station.