# US 2018/0323921 A1 · Method and apparatus for configuring a signal field including allocation information for a resource unit in wireless local area network system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323921 A1 - Document ID: US20180323921A1 - Status: Published application - Kind: A1 - Application number: 16/033,800 - Filed: 2018-07-12 - Published: 2018-11-08 - Earliest claimed: 2015-08-11 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jinsoo CHOI; Dongguk LIM; Hangyu CHO; Eunsung PARK - Web page: https://patentgrep.com/patent/US20180323921A1 ## CPC - H04B 7/0452: Multi-user MIMO systems - H04L 5/0023: {Time-frequency-space} - H04L 5/0025: {Spatial division following the spatial signature of the channel} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 27/2613: {Structure of the reference signals} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Proposed is a control field including allocation information regarding a resource unit (RU) in a wireless local area network (WLAN) system supporting a plurality of RUs. A data field may be transmitted in unit of the RU. For a case where two 106-RUs are arranged and a plurality of user stations (STAs) are multiplexed to the respective 106-RUs, a SIG-B field may be used to perform signaling. More specifically, the number of STAs to be multiplexed may be indicated by using first and second identification bits in a user-common field of the SIG-B field. ## Claims ### Claim 1 A method of receiving a packet in a wireless local area network (WLAN), the method comprising: receiving, by a receiving station, a physical layer protocol data unit (PPDU) comprising a first control field including common control information, a second control field including a user common field and a user specific field, and a data field, wherein the user common field includes allocation information for a first resource unit (RU) corresponding to 106 subcarriers and a second RU corresponding to 106 subcarriers, wherein the user common field includes a first number bit indicating a number of multiple user-multiple input multiple output (MU-MIMO) users allocated to the first RU and a second number bit indicating a number of MU-MIMO users allocated to the second RU, wherein each of the first and second number bits is implemented with 2 bits, wherein the user specific field includes first identification information for the MU-MIMO users allocated to the first RU and second identification information for the MU-MIMO users allocated to the second RU; determining, by the receiving station, at least one resource unit (RU) allocated for the receiving station by using the second control field; and decoding, by the receiving station, the data field by using the at least one RU. ### Claim 2 (depends on 1) The method of claim 1, wherein the first control field is a High Efficiency (HE) signal-A (SIG-A) field, and the second control field is a HE signal-B (SIG-B) field. ### Claim 3 (depends on 1) The method of claim 1, wherein the number of multiple user-multiple input multiple output (MU-MIMO) users allocated to the first RU or the second RU is set to 1, 2, 3 or 4. ### Claim 4 (depends on 1) The method of claim 1, wherein the user specific field indicates a modulation and coding scheme (MCS) applied to each of the first RU and the second RU. ### Claim 5 (depends on 1) The method of claim 1, wherein the first identification information and the second identification information are association ID (AID) information. ### Claim 6 (depends on 1) The method of claim 1, wherein the first control field indicates a frequency bandwidth used to receive the PPDU. ### Claim 7 A station in a wireless local area network (WLAN), comprising: a transceiver transmitting or receiving radio signals; and a processor connected to the transceiver and configured to: instruct the transceiver to receive, a physical layer protocol data unit (PPDU) comprising a first control field including common control information, a second control field including a user common field and a user specific field, and a data field, wherein the user common field includes allocation information for a first resource unit (RU) corresponding to 106 subcarriers and a second RU corresponding to 106 subcarriers, wherein the user common field includes a first number bit indicating a number of multiple user-multiple input multiple output (MU-MIMO) users allocated to the first RU and a second number bit indicating a number of MU-MIMO users allocated to the second RU, wherein each of the first and second number bits is implemented with 2 bits, wherein the user specific field includes first identification information for the MU-MIMO users allocated to the first RU and second identification information for the MU-MIMO users allocated to the second RU; determine at least one resource unit (RU) allocated for the receiving station by using the second control field; and decode the data field by using the at least one RU. ### Claim 8 (depends on 7) The station of claim 7, wherein the first control field is a High Efficiency (HE) signal-A (SIG-A) field, and the second control field is a HE signal-B (SIG-B) field. ### Claim 9 (depends on 7) The station of claim 7, wherein the number of multiple user-multiple input multiple output (MU-MIMO) users allocated to the first RU or the second RU is set to 1, 2, 3 or 4. ### Claim 10 (depends on 7) The station of claim 7, wherein the user specific field indicates a modulation and coding scheme (MCS) applied to each of the first RU and the second RU. ### Claim 11 (depends on 7) The station of claim 7, wherein the first identification information and the second identification information are association ID (AID) information. ### Claim 12 (depends on 7) The station of claim 7, wherein the first control field indicates a frequency bandwidth used to receive the PPDU.