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- Nachgewiesen in: USPTO Patent Applications
- Sprachen: English
- Document Number: 20210337595
- Publication Date: October 28, 2021
- Appl. No: 17/187198
- Application Filed: February 26, 2021
- Assignees: Apple Inc. (Cupertino, CA, US)
- Claim: 1. An electronic device, comprising: a transceiver configured to communicate with a second electronic device; and one or more processors communicatively coupled to the transceiver and configured to: receive, using the transceiver, a request to send (RTS) frame sent by the second electronic device; determine, based at least on the received RTS frame, a clear to send (CTS) frame format to transmit in response to the RTS frame; and transmit, using the transceiver, a CTS frame based at least on the determined CTS frame format, wherein the CTS frame is transmitted on at least one sub-channel on which the RTS frame was received, when the at least one sub-channel is idle.
- Claim: 2. The electronic device of claim 1, wherein to determine the CTS frame format, the one or more processors are further configured to: determine whether the RTS frame is transmitted only to the electronic device.
- Claim: 3. The electronic device of claim 2, wherein in response to determining that the RTS frame is transmitted only to the electronic device, the CTS frame is configured to include a channel bitmap field indicating the at least one sub-channel on which the CTS frame is transmitted.
- Claim: 4. The electronic device of claim 1, wherein to determine the CTS frame format, the one or more processors are further configured to: process a subfield of the RTS frame, the subfield representing the CTS frame format indicated by the second electronic device.
- Claim: 5. The electronic device of claim 1, wherein to transmit the CTS frame, the one or more processors are further configured to: transmit, using the transceiver, the CTS frame on a plurality of sub-channels on which the RTS frame was received, based at least on determining: that the plurality of sub-channels are idle and that the plurality of sub-channels yield a large-size resource unit (RU) aggregation mode.
- Claim: 6. The electronic device of claim 1, wherein the one or more processors are further configured to determine that the at least one sub-channel is idle using a high efficiency (HE) clear channel assessment (CCA) mechanism.
- Claim: 7. The electronic device of claim 6, wherein the HE CCA mechanism comprises at least one of a virtual carrier sense (CS) mechanism or an energy detection mechanism during a time period after receiving the RTS frame.
- Claim: 8. The electronic device of claim 1, wherein the one or more processors are configured to transmit the CTS frame on a plurality of sub-channels on which the RTS frame was received and that are idle and wherein the CTS frame is not transmitted on a puncture sub-channel.
- Claim: 9. The electronic device of claim 1, wherein the RTS frame comprises a high efficiency (HE) multi-user (MU) RTS frame.
- Claim: 10. A method, comprising: receiving, at a first electronic device and on at least one sub-channel, a request to send (RTS) frame sent by a second electronic device; determining, based at least on the received RTS frame, a clear to send (CTS) frame format to transmit in response to the RTS frame; determining that the at least one sub-channel is idle; and transmitting, to the second electronic device, a CTS frame based at least on the determined CTS frame format, wherein the CTS frame is transmitted on at the least one sub-channel on which the RTS frame was received, and when the at least one sub-channel is idle.
- Claim: 11. The method of claim 10, wherein determining the CTS frame format further comprises determining whether the RTS frame is transmitted only to the first electronic device.
- Claim: 12. The method of claim 11, wherein in response to determining that the RTS frame is transmitted only to the first electronic device, the CTS frame is configured to include a channel bitmap field indicating the at least one sub-channel on which the CTS frame is transmitted.
- Claim: 13. The method of claim 10, wherein determining the CTS frame format further comprises processing a subfield of the RTS frame, the subfield representing the CTS frame format indicated by the second electronic device.
- Claim: 14. The method of claim 10, wherein determining that the at least one sub-channel is idle comprises using a high efficiency (HE) clear channel assessment (CCA) mechanism, wherein the HE CCA mechanism comprises at least one of a virtual carrier sense (CS) mechanism or an energy detection mechanism during a time period after receiving the RTS frame.
- Claim: 15. An electronic device, comprising: a transceiver configured to communicate with a second electronic device; and one or more processors communicatively coupled to the transceiver and configured to: generate a request to send (RTS) frame, wherein the RTS frame comprises a first subfield and a second subfield for indicating a bandwidth (BW) associated with the RTS frame; determine that at least one sub-channel is idle; and transmit, using the transceiver and to the second electronic device, the RTS frame on the at least one sub-channel.
- Claim: 16. The electronic device of claim 15, wherein the RTS frame further comprises a common info field, wherein the first subfield is in the common info field and the second subfield is in the special user info field.
- Claim: 17. The electronic device of claim 15, wherein to transmit the RTS frame, the one or more processors are further configured to: transmit the RTS frame on the at least one sub-channel when the at least one channel is idle and the at least one sub-channel yields a large-size resource unit (RU) aggregation mode where 242 or more RUs are aggregated in the RTS frame.
- Claim: 18. The electronic device of claim 15, wherein the RTS frame comprises a high efficiency (HE) multi-user (MU) RTS frame.
- Claim: 19. The electronic device of claim 15, wherein the BW associated with the RTS frame comprises one of 320 MHz, 160+160 MHz, 240 MHz, or 160+80 MHz.
- Claim: 20. The electronic device of claim 19, wherein the RTS frame comprises a special user info field including an association identifier (AID) having a predefined value.
- Current International Class: 04; 04
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