Method for efficient rediscovery and medium access for wake-up radios

Abstract

Methods and apparatuses are described herein for rediscovery and medium access for wake-up radios. For example, a wireless transmit receive unit (WTRU) may receive, via a first transceiver, a frame that includes a wake-up radio (WUR) operation element having a first counter value. The WTRU may deactivate the first transceiver and activate a second transceiver, wherein the first transceiver entersinto a doze state and the second transceiver is in an awake state. The WTRU may then receive, via the second transceiver in the awake state, a WUR frame that includes a second counter value indicatingan update of a plurality of basic server set (BSS) parameters associated with the first transceiver. On a condition that the second counter value is different than the first counter value, the WTRU may activate the first transceiver to update the plurality of BSS parameters, wherein the first transceiver enters into an awake state.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application 62 / 616,977, filed January 12, 2018, and US Provisional Application 62 / 691,799, filed June 29, 2018, the contents of which are hereby incorporated by reference. Background technique [0003] A wake-up radio (WUR) receiver may operate as a companion radio to a primary connection radio (PCR) to receive wake-up signals or wake-up packets. A wake-up signal or wake-up packet can carry control information and have an effective receiver power consumption of less than 1 milliwatt (mW). Receipt of a wakeup signal or a wakeup packet by the WUR receiver may cause the PCR to wake up from sleep. For example, a wake-up signal sent from an access point (AP) triggers a wireless transmit / receive unit (WTRU) equipped with a WUR receiver to wake up from sleep mode and start receiving activity using PCR. However, if the AP loses power or stored information about existing WTR...

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Problems solved by technology

However, if the AP loses power or stored information about existing WTRUs, the WTRU previously associated with the AP may not be aware of the fact that the AP does not have existing WTRU information for the WTRU

Furthermore, when multiple WTRUs are woken up using a multicast wakeup signal, there may be congestion at the wireless medium because the WTRUs that are woken up try to access the medium at approximately similar times

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