# US 11,310,736 B2 · Wideband channel access methodology and system for wireless stations > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,736 B2 - Document ID: US11310736B2 - Status: Granted - Kind: B2 - Application number: 16/208,360 - Filed: 2018-12-03 - Published: 2019-06-06 - Granted: 2022-04-19 - Earliest claimed: 2017-12-04 - Assignees: MediaTek Singapore Pte. Ltd. - Applicants: MediaTek Singapore Pte. Ltd. - Inventors: Yongho Seok; Chao-Chun Wang; James Chih-Shi Yee - Web page: https://patentgrep.com/patent/US11310736B2 ## CPC - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - H04W 52/0219: {where the power saving management affects multiple terminals} - H04W 72/04: Wireless resource allocation - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/20: Control channels or signalling for resource management - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - Y02D 30/70: in wireless communication networks - 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) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Embodiments of the present invention provide a method and apparatus for providing wideband channel access to wireless devices, such as 20 MHz only wireless stations. A Target Wakeup Time (TWT) Channel field contains a bitmap indicating a temporary primary channel for using during a TWT Service Period (SP). The temporary primary channel is determined through a negotiation between a requesting STA and a responding STA, and the responding STA assigns resource units (RUs) to the requesting STA according to the temporary primary channel. After the TWT SP, the requesting STA switches back to a primary channel. ## Claims ### Claim 1 A method of transmitting data on a temporary primary channel, the method comprising: transmitting a first frame over a primary channel requesting a first channel for use as a negotiated channel and a target wakeup time (TWT), the transmitting being performed from a requesting station (STA) to a responding STA, wherein said first frame is a TWT setup request frame; receiving a second frame responsive to said first frame, said second frame originating from said responding STA, wherein said second frame indicates a second channel for the requesting STA to use as the negotiated channel; exchanging frames with the requesting STA; and allocating resource units (RUs) to the requesting STA, wherein the RUs are within the negotiated channel. ### Claim 2 (depends on 1) A method as described in claim 1, wherein the plurality of frames comprises an uplink frame and a downlink frame. ### Claim 3 (depends on 2) A method as described in claim 2, wherein said uplink frame comprises an HE MU PPDU frame and wherein said downlink frame comprises an HE TB PPDU frame. ### Claim 4 (depends on 1) A method as described in claim 1, wherein said accessing the negotiated channel using the requesting STA during a TWT service period (SP). ### Claim 5 (depends on 4) A method as described in claim 4, further comprising switching back to the primary channel after the TWT SP. ### Claim 6 (depends on 1) A method as described in claim 1, wherein said second channel is selected based on said first channel during a negotiation between said requesting STA and said responding STA. ### Claim 7 (depends on 1) A method as described in claim 1, wherein said second frame is a TWT setup response frame, wherein said first channel is encoded as a bitmap in said TWT setup request frame, and wherein said second channel is encoded as a bitmap in said TWT setup response frame. ### Claim 8 (depends on 1) A method as described in claim 1, wherein said requesting STA is a 20 MHz STA. ### Claim 9 (depends on 1) A method as described in claim 1, further comprising the requesting STA and the responding STA exchanging bitmaps to negotiate a selection of the second channel. ### Claim 10 A system for transmitting data on a temporary primary channel, the system comprising: a requesting STA operable to transmit a first frame over a primary channel, wherein said first frame indicates a first channel for use as a negotiated channel and a target wakeup time (TWT), wherein said first frame is a TWT setup request frame; and a responding STA operable to transmit a second frame responsive to said first frame, wherein said second frame indicates a second channel for the requesting STA to use as the negotiated channel, wherein the responding STA allocates RUs to the requesting STA, wherein the RUs are within the negotiated channel, and wherein further the requesting STA exchanges frames with the responding STA. ### Claim 11 (depends on 10) A system as described in claim 10, wherein the plurality of frames comprises an uplink frame and a downlink frame. ### Claim 12 (depends on 11) A system as described in claim 11, wherein said uplink frame comprises an HE MU PPDU frame and wherein said downlink frame comprises an HE TB PPDU frame. ### Claim 13 (depends on 12) A system as described in claim 12, wherein said requesting STA is configured to access the negotiated channel during a TWT SP. ### Claim 14 (depends on 13) A system as described in claim 13, wherein the requesting STA is operable to switch back to the primary channel after the TWT SP. ### Claim 15 (depends on 10) A system as described in claim 10, wherein the responding STA is operable to select said second channel based on said first channel during a negotiation between said requesting STA and said responding STA. ### Claim 16 (depends on 10) A system as described in claim 10, wherein said second frame is a TWT setup response frame, wherein said first channel is encoded as a bitmap in said TWT setup request frame, and wherein said second channel is encoded as a bitmap in said TWT setup response frame. ### Claim 17 (depends on 10) A system as described in claim 10, wherein said requesting STA is a 20 MHz STA. ### Claim 18 (depends on 10) A system as described in claim 10, wherein the requesting STA and the responding STA are further operable to exchange bitmaps to negotiate a selection of the second channel. ### Claim 19 A device for providing wideband channel access to a wireless station (STA), said device comprising: a memory for storing data; and a processor communicatively coupled to said the memory and configured to execute instructions for providing wideband channel access, said method comprising: receiving a first frame over a primary channel from a requesting station (STA), wherein the first frame indicates a first channel for use as a negotiated channel and a target wakeup time (TWT), wherein said first frame is a TWT setup request frame, and wherein the requesting STA is a 20 MHz only wireless STA; transmitting a second frame responsive to said first frame to said requesting STA, wherein said second frame indicates a second channel for the requesting STA to use as the negotiated channel; exchanging frames with the requesting STA; and allocating resource units (RUs) to the requesting STA, wherein the RUs are within the negotiated channel. ### Claim 20 (depends on 19) A device as described in claim 19, wherein the plurality of frames comprises an uplink frame and a downlink frame. ### Claim 21 (depends on 20) A device as described in claim 20, wherein said uplink frame comprises an HE MU PPDU frame and wherein said downlink frame comprises an HE TB PPDU frame. ### Claim 22 (depends on 19) A device as described in claim 19, wherein the method further comprises said requesting STA accessing the negotiated channel during a TWT service period (SP). ### Claim 23 (depends on 19) A device as described in claim 19, wherein said method further comprises transmitting and receiving bitmaps to negotiate a selection of the second channel.