Abstract:
One aspect of the disclosure provides a method for wireless communication. The method includes sending a modulation and coding scheme request to an access point. The modulation and coding scheme request is sent using a first physical layer preamble frame. The modulation and coding scheme request includes an identifier associated with the access point. The method further includes receiving at a station a modulation and coding scheme feedback response from the access point in response to sending the modulation and coding scheme request. The modulation and coding scheme feedback response is received as a second physical layer preamble frame. In addition, the method includes determining a modulation and coding scheme based on the modulation and coding scheme feedback response. Moreover, the method includes transmitting data to the access point using the identified modulation and coding scheme.
Abstract:
Transmission parameters are determined for communication between apparatuses. These transmission parameters may specify, for example, a number of spatial streams, a bandwidth, and a transmission rate. Based on the determined parameters, a table of a set of tables comprising transmission parameters is identified and an index from the table is determined. Rate information is then sent in a frame from one of the apparatuses to the other. The rate information comprises several fields indicative of the index, the number of spatial streams, and bandwidth. The apparatus that receives the rate information may then use this information to identify the table and obtain transmission parameters from the table.
Abstract:
The application involves a method for wireless communication and apparatus thereof, comprising: receiving a first frame having a control field; determining whether the control field comprises a first type or a second type based at least in part on the control field; and processing the control field based on the determined type.
Abstract:
The application involves a method for wireless communication and apparatus thereof, comprising: receiving a data unit comprising an indicator signifying whether a control field is present in the data unit; if the indicator signifies that the control field is present, determining whether the control field comprises a first type or a second type based at least in part on a subfield of the data unit; and processing the control field based on the type of the control field.
Abstract:
Certain aspects of the present disclosure relate to a technique for communicating Channel State Information (CSI) feedback. In some aspects, the CSI feedback is communicated in a very high throughput (VHT) wireless communications system.
Abstract:
Techniques for signaling extended sizes for Medium Access Control (MAC) Protocol Data Unit (MPDU), Aggregated MPDU (A-MPDU) and Aggregated MAC Service Data Unit (A-MSDU) frame formats. A first technique proposes modifications to the current specifications of the IEEE 802.11η standard in order to allow for longer MPDUs in an A-MPDU. This technique reuses the IEEE 802.11η signaling format and utilizes reserved bits to convey the new information, i.e. an indication that the maximum length of a MAC RDU, MPDU frame, of an A-MRDU, or ofan A-MSDU is respectively greater than 4095 bytes. 64 kilobytes and 7935 bytes. The second technique proposes a new signaling mechanism to convey the extended sizes for the MPDU, A-MPDU and the A-MSDU through a very high throughput (VHT) capability element. One or more bits may be added to the delimiter field.
Abstract:
Certain aspects of the present disclosure relate to methods and apparatus for using information in a Very High Throughput Signal B (VHT-SIG-B) field in the preamble of a null data packet (NDP). Retaining the VHT-SIG-B field in NDPs offers several advantages, such as maintaining a unified IEEE 802.11ac preamble structure, providing for 4 ?s extra time to process beamforming feedback, and being able to use information in the VHT-SIG-B field to determine a level of interference in the NDP.
Abstract:
Certain aspects of the present disclosure generally apply to a wireless local area network (WLAN) where an access point (AP) has data to send to multiple stations (STAs). By using the Downlink Spatial Division Multiple Access (DL-SDMA) technique, the AP may send data at the same time towards multiple STAs. Certain aspects of the present disclosure provide techniques and apparatuses for detecting that a multiuser multiple-input multiple-output (MU-MIMO) transmission has suffered a collision and to adapting a contention window (CW) size for a backoff counter applied to a subsequent MU-MIMO transmission.
Abstract:
Simultaneous, multi-user uplink communication is scheduled in a wireless network (100) by transmitting a poll message (411) to a plurality of access terminals (403-406) in response to receiving a first request to transmit data (410) via uplink. The poll message (411) includes a solicitation for requests to transmit data from each of the plurality of access terminals (403-406). The poll message (411) also includes a medium reservation and schedule for transmission of the requests from the access terminals. Based on the requests received from the access terminals, a number of the access terminals (403, 404) are selected for simultaneous transmission of data (418, 419) via uplink. A transmit start message (416) is sent to each of the selected access terminals (403, 404) indicating when and for how long the selected access terminals (403, 404) may transmit data via uplink. After the data (418, 419) is received, a block ACK message (422, 423) is sent to each of the selected access terminals (418, 419) indicating successful simultaneous communication.