# US 2016/0262157 A1 · Method and apparatus for transmitting radio frame including control information in a wlan system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0262157 A1 - Document ID: US20160262157A1 - Status: Published application - Kind: A1 - Application number: 15/060,457 - Filed: 2016-03-03 - Published: 2016-09-08 - Earliest claimed: 2015-03-04 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jeongki KIM; Kiseon RYU; Wookbong LEE; Jinsoo CHOI; Hangyu CHO - Web page: https://patentgrep.com/patent/US20160262157A1 ## CPC - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04B 7/0413: MIMO systems - H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 69/323: in the physical layer [OSI layer 1] - H04W 48/12: using downlink control channel - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/003: {Arrangements for allocating sub-channels of the transmission path} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method and apparatus for transmitting a multi-user or multi-Station (multi-STA) radio frame including control information in a Wireless Local Area Network (WLAN) system are disclosed. The method includes generating a frame including a signaling field and a data field, and transmitting the generated frame to the plurality of STAs. The signaling field includes a first signaling field (a SIG A field) including control information for frame interpretation and a second signaling field (a SIG B field) including control information individually for each of the plurality of STAs, the second signaling field includes a first block including common control information for the plurality of STAs, and a second block including control information for each of the plurality of STAs. ## Claims ### Claim 1 A method for transmitting a radio frame to a plurality of Stations (STAs) in a Wireless Local Area Network (WLAN) system, the method comprising: generating a frame including a signaling field and a data field; and transmitting the generated frame to the plurality of STAs, wherein the signaling field includes a first signaling field (SIG A field) including control information for frame interpretation and a second signaling field (SIG B field) including control information individually for each of the plurality of STAs, the second signaling field includes a first block including common control information for the plurality of STAs, and a second block including control information for each of the plurality of STAs. ### Claim 2 (depends on 1) The method according to claim 1, wherein the second signaling field includes one first block and one or more second blocks following the first block, and the number of second blocks is determined according to the number of the plurality of STAs. ### Claim 3 (depends on 1) The method according to claim 1, wherein the first block includes resource allocation information for the plurality of STAs as common control information for the plurality of STAs. ### Claim 4 (depends on 3) The method according to claim 3, wherein the resource allocation information includes at least one of information about the number of resource allocation units to be allocated, information about the size of each resource allocation unit, information about frequency-domain arrangement of each resource allocation unit, and information about the number of users allocated per resource allocation unit. ### Claim 5 (depends on 1) The method according to claim 1, wherein the second signaling field includes control information independently encoded per 20-MHz band. ### Claim 6 (depends on 1) The method according to claim 1, wherein the second signaling field is transmitted repeatedly on a 40-MHz basis in an 80-MHz band, and control information is encoded independently in each 20-MHz band of specific 40 MHz. ### Claim 7 (depends on 1) The method according to claim 1, wherein the first block and the second block of the second signaling field are encoded individually on a block basis. ### Claim 8 (depends on 1) The method according to claim 1, wherein each of the first block and the second block of the second signaling field includes an individual Cyclic Redundancy Check (CRC). ### Claim 9 (depends on 1) The method according to claim 1, wherein the first signaling field includes information about a resource area in which the second signaling field is transmitted. ### Claim 10 A wireless apparatus for transmitting a radio frame to a plurality of Stations (STAs) in a Wireless Local Area Network (WLAN) system, the wireless apparatus comprising: a processor configured to generate a frame including a signaling field and a data field; and a transceiver configured to transmit the generated frame to the plurality of STAs, wherein the signaling field includes a first signaling field (SIG A field) including control information for frame interpretation and a second signaling field (SIG B field) including control information individually for each of the plurality of STAs, the second signaling field includes a first block including common control information for the plurality of STAs, and a second block including control information for each of the plurality of STAs. ### Claim 11 (depends on 10) The wireless apparatus according to claim 10, wherein the second signaling field includes one first block and one or more second blocks following the first block, and the number of second blocks is determined according to the number of the plurality of STAs. ### Claim 12 (depends on 10) The wireless apparatus according to claim 10, wherein the first block includes resource allocation information for the plurality of STAs as common control information for the plurality of STAs. ### Claim 13 (depends on 12) The wireless apparatus according to claim 12, wherein the resource allocation information includes at least one of information about the number of resource allocation units to be allocated, information about the size of each resource allocation unit, information about frequency-domain arrangement of each resource allocation unit, and information about the number of users allocated per resource allocation unit. ### Claim 14 (depends on 10) The wireless apparatus according to claim 10, wherein the processor independently encodes control information of the second signaling field in each 20-MHz band. ### Claim 15 (depends on 10) The wireless apparatus according to claim 10, wherein the processor individually encodes the first block and the second block of the second signaling field on a block basis.