1 / 4

Enhancing WLAN Control Response Frame Handling in Non-HT Frames

This study investigates how VHT STAs should handle control response frames in non-HT frames. It explores methods for conveying channel bandwidth information and making decisions about transmitting control responses. Should the BW indication rule be updated? Yes, No, or Abstain?

vcleveland
Télécharger la présentation

Enhancing WLAN Control Response Frame Handling in Non-HT Frames

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. BW Indication in Non-HT Frames Authors: Date: 2011-01-17 Yong Liu, Marvell

  2. Motivation • Control response BW selection • A STA that receives a frame that elicits a control frame transmission (other than CTS frame) shall send the response frame using the same channel bandwidth as the received frame • When a VHT STA receives a non-HT PPDU (or non-HT duplicate PPDU) that elicits a control frame transmission, how does the VHT STA tell the BW of the received non-HT PPDU (or non-HT duplicate PPDU), and decide the BW of the control response transmission? Yong Liu, Marvell

  3. Examples • RTS ⇒ CTS • BAR ⇒ BA • BAR can be transmitted by using non-HT (duplicate) PPDU for lower overhead and channel access protection • BAR receiver needs to know the BW of BAR to decide the BW of BA transmission • CF-END (from non-AP STA) ⇒ CF-END (from AP) • CF-END shall be transmitted by using non-HT (duplicate) PPDU • When AP receives a CF-END from a non-AP STA, and decides to transmit a CF-END also, it needs to know the BW of the received CF-END • Sounding Poll ⇒ Sounding Feedback • Sounding Poll can be transmitted by using non-HT (duplicate) PPDU for lower overhead and channel access protection • Sounding Poll receiver needs to know the BW of the Sounding Poll frame to decide the BW of sounding feedback transmission Yong Liu, Marvell

  4. Pre-motion • Should the spec framework document be updated with the following BW indication rule? • A VHT STA that transmits a control frame carried in non-HT or non-HT duplicate format and addressed to a VHT STA and eliciting a control frame transmission or a sounding feedback management frame transmission shall set the INDICATED_CH_BANDWIDTH TXVECTOR parameter of the control frame to the same value as the CH_BANDWIDTH TXVECTOR parameter and shall set the Individual/Group bit in the TA field to 1. • Yes • No • Abstain Yong Liu, Marvell

More Related