Classification and silencing for uplink multi-user transmissions in WLANs
AssigneeInterDigital Patent Holdings, Inc.
InventorsOghenekome Oteri, Hanqing Lou, Fengjun Xi, Rui Yang
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Abstract
Method, apparatuses, and systems for multi-user (MU) transmission is provided, including scheduling, by an access point (AP), an uplink (UL) MU transmission for a group of wireless transmit/receive units (WTRUs) in which there is an indication that at least one resource unit (RU) of a plurality of RUs is silenced. The silencing may be based on coordinating with one or more overlapping APs or by analyzing conditions of channels associated with an AP.
Claims13
A method carried out by an 802.11 access point (AP) for minimizing interference, the method comprising:
- generating a high efficiency signal-B (HE-SIG-B) field for an orthogonal frequency division multiple access (OFDMA) signal to be transmitted to a plurality of wireless transmit/receive units (WTRUs), wherein the HE-SIG-B field includes a WTRU-identifier (WTRU-ID) element indicating a predetermined value that indicates a resource unit (RU) is silenced;
- and
- transmitting the OFDMA signal, which includes the HS SIG-B field, to the plurality of WTRUs.
An access point (AP) for minimizing interference, comprising:
- a transceiver;
- a processor operatively connected to the transceiver, the processor and transceiver configured to generate a high efficiency signal-B (HE-SIG-B) field for an orthogonal frequency division multiple access (OFDMA) signal to be transmitted to a plurality of wireless transmit/receive units (WTRUs), wherein the HE-SIG-B field includes a WTRU-identifier (WTRU-ID) element indicating a predetermined value that indicates a resource unit (RU) is silenced;
- and
- the processor and transceiver further configured to transmit the OFDMA signal, which includes the HE SIG-B field, to the plurality of WTRUs.
A method performed by a wireless transmit/receive unit (WTRU), the method comprising:
- receiving, from an 802.11 access point (AP), an orthogonal frequency division multiple access (OFDMA) signal including a preamble with a WTRU specific high efficiency common signal-B (HE-SIG-B) field, wherein the HE-SIG-B field includes a WTRU identifier (WTRU-ID) element indicating a predetermined value;
- and
- determining that the predetermined value indicates a resource unit (RU) is silenced.
Dependencies are inferred from the claim text.