# US 8,787,287 B2 · Method and apparatus for transmitting/receiving control information for additional broadcast information in a wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,787,287 B2 - Document ID: US8787287B2 - Status: Granted - Kind: B2 - Application number: 13/382,520 - Filed: 2010-07-06 - Published: 2012-05-10 - Granted: 2014-07-22 - Earliest claimed: 2009-07-06 - Assignees: LG Electronics Inc. - Applicants: Hee Jeong Cho; Ki Seon Ryu; Young Soo Yuk; Hyun Woo Lee - Inventors: Hee Jeong Cho; Ki Seon Ryu; Young Soo Yuk; Hyun Woo Lee - Web page: https://patentgrep.com/patent/US8787287B2 ## CPC - H04W 4/00: Services specially adapted for wireless communication networks; Facilities therefor - H04W 48/10: using broadcasted information - H04W 72/04: Wireless resource allocation - H04W 48/12: using downlink control channel - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present invention relates to a method and apparatus for transmitting/receiving control information for additional broadcast information in a wireless communication system. According to one aspect of the present invention, a method for transmitting control information for additional broadcast information in a wireless communication system comprises a step in which a base station transmits control information containing information on the transmission time of the additional broadcast message, and transmits the additional broadcast message at said transmission time. ## Claims ### Claim 1 A method for receiving control information for an additional broadcast message by a user equipment (UE) of a wireless communication system, the method comprising: receiving, by the UE from a base station (BS), control information, the control information including a system configuration descriptor (SCD) count indicating version information of a system configuration to be applied for the UE; and receiving, by the UE from the BS, the additional broadcast message, the additional broadcast message including a system configuration information and a configuration change count indicating version information of the system configuration information, wherein the additional broadcast message is an Advanced Air Interface System Configuration Descriptor (AAI_SCD) message, wherein the SCD count included in the received control information is the same as the configuration change count included in the received additional broadcast message, wherein the BS applies the system configuration information included in the additional broadcast message, wherein, if the SCD count included in the received control information is different from a previous SCD count saved lastly at the UE and if the SCD count has not been applied yet in the UE, the UE applies a system configuration information associated with the previous SCD count saved lastly at the UE, and wherein, if the SCD count included in the received control information is different from the previous SCD count saved lastly at the UE and if the SCD count has been applied in the UE, the UE applies the system configuration information included in the received additional broadcast message. ### Claim 2 (depends on 1) The method according to claim 1, wherein the control information is received through a secondary superframe header (S-SFH). ### Claim 3 (depends on 1) The method according to claim 1, wherein the control information further includes a minimum duration of the control information. ### Claim 4 (depends on 3) The method according to claim 3, wherein the received additional broadcast message is updated when the minimum duration of the control information is over. ### Claim 5 (depends on 3) The method according to claim 3, wherein the minimum duration of the control information is represented in a unit of superframe. ### Claim 6 (depends on 1) The method according to claim 1, wherein the additional broadcast message is received at a periodic interval. ### Claim 7 (depends on 1) The method according to claim 1, wherein the control information further includes information of a transmission time point of the additional broadcast message, and the additional broadcast message is received at the transmission time point. ### Claim 8 A method for transmitting control information for an additional broadcast message by a base station (BS) of a wireless communication system, the method comprising: transmitting, by the BS to a user equipment (UE), control information, the control information including a system configuration descriptor (SCD) count indicating version information of a system configuration to be applied for the UE; and transmitting, by the BS to the UE, the additional broadcast message, the additional broadcast message including a system configuration information and a configuration change count indicating version information of the system configuration information, wherein the additional broadcast message is an Advanced Air Interface System Configuration Descriptor (AAI_SCD) message, wherein the SCD count included in the transmitted control information is the same as the configuration change count included in the transmitted additional broadcast message, wherein the BS applies the system configuration information included in the additional broadcast message, wherein, if the SCD count included in the transmitted control information is different from a previous SCD count saved lastly at the UE and if the SCD count has not been applied yet in the UE, the UE applies a system configuration information associated with the previous SCD count saved lastly at the UE, and wherein, if the SCD count included in the transmitted control information is different from the previous SCD count saved lastly at the UE and if the SCD count has been applied in the UE, the UE applies the system configuration information included in the transmitted additional broadcast message. ### Claim 9 (depends on 8) The method according to claim 8, wherein the control information is transmitted through a secondary superframe header (S-SFH). ### Claim 10 (depends on 8) The method according to claim 8, wherein the control information further includes a minimum duration of the control information. ### Claim 11 (depends on 10) The method according to claim 10, wherein the minimum duration of the control information is represented in a unit of superframe. ### Claim 12 (depends on 8) The method according to claim 8, wherein the additional broadcast message is transmitted at a periodic interval. ### Claim 13 (depends on 8) The method according to claim 8, wherein the control information further includes information of a transmission time point of the additional broadcast message, and the additional broadcast message is transmitted at the transmission time point. ### Claim 14 A user equipment of a wireless communication system for receiving control information for an additional broadcast message, the user equipment comprising: a receiver; and a processor operatively connected to the receiver and configured to: receive, from a base station (BS), control information, the control information including a system configuration descriptor (SCD) count indicating version information of a system configuration to be applied for the user equipment; and receive, from the BS, the additional broadcast message, the additional broadcast message including a system configuration information and a configuration change count indicating version information of the system configuration information, wherein the additional broadcast message is an Advanced Air Interface System Configuration Descriptor (AAI_SCD) message, wherein the SCD count included in the received control information is the same as the configuration change count included in the received additional broadcast message, wherein the BS applies the system configuration information included in the additional broadcast message, wherein, if the SCD count included in the received control information is different from a previous SCD count saved lastly at the user equipment and if the SCD count has not been applied yet in the user equipment, the user equipment applies a system configuration information associated with the previous SCD count saved lastly at the user equipment, and wherein, if the SCD count included in the received control information is different from the previous SCD count saved lastly at the user equipment and if the SCD count has been applied in the user equipment, the user equipment applies the system configuration information included in the received additional broadcast message. ### Claim 15 (depends on 14) The user equipment according to claim 14, wherein the control information is received through a secondary superframe header (S-SFH). ### Claim 16 (depends on 14) The user equipment according to claim 14, wherein the control information further includes a minimum duration of the control information, and the processor updates the received additional broadcast message when the minimum duration of control information is over. ### Claim 17 A base station of a wireless communication system for transmitting control information for an additional broadcast message, the base station comprising: a transmitter; and a processor operatively connected to the transmitter and configured to: transmit, to a user equipment (UE), control information, the control information including a system configuration descriptor (SCD) count indicating version information of a system configuration to be applied for the UE; and transmit, to the UE, the additional broadcast message, the additional broadcast message including a system configuration information and a configuration change count indicating version information of the system configuration information, wherein the additional broadcast message is an Advanced Air Interface System Configuration Descriptor (AAI_SCD) message, wherein the SCD count included in the transmitted control information is the same as the configuration change count included in the transmitted additional broadcast message, wherein the base station applies the system configuration information included in the additional broadcast message, wherein, if the SCD count included in the transmitted control information is different from a previous SCD count saved lastly at the UE and if the SCD count has not been applied yet in the UE, the UE applies a system configuration information associated with the previous SCD count saved lastly at the UE, and wherein, if the SCD count included in the transmitted control information is different from the previous SCD count saved lastly at the UE and if the SCD count has been applied in the UE, the UE applies the system configuration information included in the transmitted additional broadcast message. ### Claim 18 (depends on 17) The base station according to claim 17, wherein the control information is transmitted through a secondary superframe header (S-SFH). ### Claim 19 (depends on 17) The base station according to claim 17, wherein the control information further includes a minimum duration of the control information. ### Claim 20 (depends on 1) The method according to claim 1, further comprising: determining if the SCD count included in the received control information is different from the previous SCD count saved lastly at the UE and if the SCD count has not been applied yet in the UE. ### Claim 21 (depends on 8) The user equipment according to claim 8, wherein the processor is configured to determine if the SCD count included in the received control information is different from the previous SCD count saved lastly at the user equipment and if the SCD count has not been applied yet in the user equipment.