Patent ID: 9622267
Date: 2017-04-11
CPC Classifications: H04B,H04L,H04W

Claim:
1. A wireless device operating in a wireless network, the wireless device comprising: a hardware processor; and one or more memory devices coupled to the hardware processor, wherein the one or more memory devices include one or more instructions, which when executed by the hardware processor cause the wireless device to: analyze a downlink frame received by the wireless device from an access point, wherein the downlink frame is addressed to multiple devices in the wireless network, including the wireless device, and wherein analyzing the downlink frame includes detecting that the downlink frame requests use of a wireless channel for a transmission by the access point, generate a first clear-to-send (CTS) frame for responding to the downlink frame, wherein the first CTS frame shares identical information with that of a second CTS frame transmitted from another device in the wireless network that is addressed by the downlink frame, wherein the first CTS frame is a response to the downlink frame and protects the wireless channel for use by the access point, and transmit the first CTS frame, in response to the downlink frame, to the access point, wherein the first CTS frame is transmitted according to implicit timing information provided by the downlink frame, and wherein the downlink frame provides the implicit timing information for the transmission of the second CTS frame by the another device in the wireless network.