JP2019522931A - Adaptive inactivity timeout management - Google Patents

Abstract

Methods, systems, and devices for wireless communication are described. One method is to communicate with an access point (AP) during an awake interval when the wireless device is in awake mode, determine a congestion level associated with a radio frequency (RF) spectrum band, and one awake interval. Inactivity timeout (ITO) interval for the wireless device to remain in awake mode based on the identified RF spectrum band and the determined congestion level used by the wireless device to communicate with the AP during Determining. The second method is to poll the AP during the delivery traffic indication message (DTIM) and that at least one null data message has been received from the AP or a predetermined threshold number of polls have timed out. Modifying the timing for the station to poll the AP based on identifying that the trigger condition based on the decision has been met. [Selection] Figure 5

Description

  [0001] The following relates generally to wireless communications at a station, and more specifically to adaptive inactivity timeout management.

  [0002] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems can be multiple access systems that can support communication with multiple users by sharing available system resources (eg, time, frequency, and power). A WLAN, such as a wireless network, eg, a Wi-Fi (ie, Institute of Electrical and Electronics Engineers (IEEE) 802.11) network, is an access point (AP) that can communicate with one or more stations (STAs) or mobile devices. Can be included. An AP may be coupled to a network such as the Internet and may allow a mobile device to communicate over the network (or communicate with other devices coupled to an access point). A wireless device may communicate with network devices in both directions. For example, in a WLAN, a STA can communicate with associated APs via DL and UL. DL (ie, forward link) may refer to the communication link from the AP to the station, and UL (ie, reverse link) may refer to the communication link from the station to the AP.

  [0003] While power consumption of APs in a WLAN may also be a concern, power consumption by STAs typically relies on power from one or more batteries. This is especially important. A WLAN system, such as one using the 802.11 standard family (eg, WiFi), may use channel sense multiple access (CSMA), where the STA can access the channel before accessing the channel. Sense the condition. In a WLAN system, an AP may be communicating with some or many other STAs at the same time, and therefore data transfer may be interrupted by the period that the AP is serving other STAs. The STA may activate a power saving mode that wakes up when the STA goes into sleep mode periodically or semi-periodically and data is to be exchanged between the AP and STA. In some cases, after the last data packet is transmitted or received by the STA, the STA may stay in awake mode in case there is any moving data packet that has not yet been received. The STA may remain in awake mode until the inactivity timeout (ITO) interval expires. However, even if there are no additional data packets to be received, the STA waits until the ITO interval expires and remains awake. This can lead to unnecessary depletion in power without the added benefit of better performance.

  [0004] The described techniques relate to an improved method, system, device, or apparatus that supports adaptive inactivity timeout management. In general, the described techniques provide for determining an inactivity timeout (ITO) interval for a station (STA) based on network congestion. The ITO may also be determined based on the radio frequency (RF) spectral band used by the STA or the bandwidth mode of operation used by the STA, which may be associated with the RF spectral band. In some examples, the congestion level may be determined based on different activity levels within the wireless network. For example, ITO may depend on both the RF spectral band used by the STA and the congestion in the RF spectral band. The congestion level may also be determined based on activity levels of other devices operating in the RF spectrum band, and also based on reception activity associated with traffic sent to the STA in the RF spectrum band.

  [0005] Whether a STA receives a certain number of null data messages or whether the STA has a certain number of polling timeouts during a delivery traffic indication message (DTIM) Additional adaptive inactivity timeout management techniques are also described that involve modifying the timing for the STA to poll the access point (AP) based on experience. In such cases, the STA may stop polling the AP to save power, disable timing modifications for polling the AP, or save the station for the rest of the DTIM period. Polling (eg, power saving polling) can be disabled. Another example may include changing the interval between polls sent from the STA to the AP so that the poll will span the DTIM period.

  [0006] A method of wireless communication at a station is described. The method communicates with an AP in a wireless communication network during an awake interval in which the wireless device is in awake mode, identifies an RF spectral band used by the wireless device to communicate with the AP, And the wireless device awakes based at least in part on the identified RF spectrum band and the determined congestion level during one awake interval of the awake intervals. Determining the ITO spacing to remain in the mode.

  [0007] An apparatus for wireless communication in a station is described. An apparatus includes: means for communicating with an AP in a wireless communication network during an awake interval when the wireless device is in awake mode; and means for identifying an RF spectrum band used by the wireless device to communicate with the AP. Based on the identified RF spectrum band and the determined congestion level during the awake interval of one of the awake intervals, the means for determining the congestion level associated with the RF spectrum band And means for determining an ITO interval for the wireless device to remain in awake mode.

  [0008] Another apparatus for wireless communication at a station is described. The apparatus can include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions communicate to the processor to communicate with an AP in the wireless communication network during an awake interval when the wireless device is in awake mode, and to identify an RF spectrum band used by the wireless device to communicate with the AP; Determining a congestion level associated with the RF spectrum band and wirelessly determining, based at least in part on the identified RF spectrum band and the determined congestion level during one awake interval of the awake intervals. Determining the ITO spacing for the device to remain in awake mode.

  [0009] A non-transitory computer readable medium for wireless communication at a station is described. The non-transitory computer readable medium causes the processor to communicate with the AP in the wireless communication network during the awake interval when the wireless device is in awake mode, and to determine the RF spectral band used by the wireless device to communicate with the AP. Identifying, determining a congestion level associated with the RF spectrum band, and at least partially between the identified RF spectrum band and the determined congestion level during one awake interval of the awake intervals. Based on the wireless device, the wireless device may include instructions operable to cause the wireless device to determine an ITO interval for staying in awake mode.

  [0010] In some examples of the methods, apparatus, and non-transitory computer readable media described above, identifying the RF spectrum band used by the wireless device is used by the wireless device to communicate with the AP. Identifying a bandwidth operating mode. In some examples of the methods, apparatus, and non-transitory computer readable media described above, the bandwidth mode of operation is a 20 megahertz (MHz) bandwidth mode, or 40 MHz bandwidth mode, or 80 MHz bandwidth mode, or 160 MHz. Bandwidth mode, or 80 + 80 MHz bandwidth mode, or a combination thereof.

  [0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, identifying the RF spectrum band used by the wireless device is used by the wireless device to communicate with the AP. Identifying an RF spectral range associated with a possible wireless communication network. In some examples of the methods, apparatus, and non-transitory computer readable media described above, the RF spectral range used by the wireless communication network is at least a 2.4 gigahertz (GHz) spectrum, or a 5 GHz spectrum, or a 900 MHz spectrum. , Or 60 GHz spectrum, or a combination thereof.

  [0012] In some examples of the methods, apparatus, and non-transitory computer readable media described above, determining a congestion level associated with an RF spectral band is determined in the RF spectral band during a first awake interval. Determining an associated congestion level. In some examples of the methods, apparatus, and non-transitory computer readable media described above, determining the ITO interval may be performed during the first awake interval, or subsequent awake interval, or a combination thereof. Determining the ITO interval for staying in awake mode.

  [0013] In some examples of the methods, apparatus, and non-transitory computer readable media described above, determining the ITO interval includes receiving a plurality of sounding triggers and a plurality of received Determining an interval between sounding triggers of the sounding sequences and determining the ITO based at least in part on the determined interval.

  [0014] In some examples of the methods, apparatus, and non-transitory computer readable media described above, determining the ITO spacing is for an RF spectral band in which a congestion level associated with the RF spectral band is identified. Determining that it may be greater than the predetermined threshold. Some examples of the methods, apparatus, and non-transitory computer readable media described above may further include processes, features, means, or instructions for increasing the ITO spacing for the wireless device to remain in awake mode.

  [0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the station and the AP are at least in multi-user multiple-input multiple-output (MU-MIMO) mode, or single-user multi-client (SU -Operate according to MC) mode, or a combination thereof.

  [0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the congestion level may be determined based at least in part on data received by the station in the RF spectral band. In some examples of the methods, apparatus, and non-transitory computer readable media described above, the congestion level may further be determined based at least in part on other activities in the wireless communication network in the RF spectrum band. .

  [0017] A method of wireless communication at a station is described. The method includes determining a DTIM period, polling the AP during the DTIM period and while the station is in sleep mode, identifying that a trigger condition has been met, wherein the trigger The condition is based at least in part on a determination that at least one null data message has been received from the AP, or a predetermined threshold number of polls have timed out, or a combination thereof, and that the trigger condition has been met. Modifying the timing for the station to poll the AP based at least in part on identifying.

  [0018] An apparatus for wireless communication at a station is described. The apparatus comprises: means for determining a DTIM period; means for polling the AP during the DTIM period and while the station is in sleep mode; and means for identifying that the trigger condition has been met And wherein the trigger condition is based at least in part on a determination that at least one null data message has been received from the AP, or that a predetermined threshold number of polls have timed out, or a combination thereof, Means for modifying the timing for the station to poll the AP based at least in part on identifying that

  [0019] Another apparatus for wireless communication at a station is described. The apparatus can include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions are for determining the DTIM period, identifying the AP during the DTIM period and while the station is in sleep mode, identifying that the trigger condition has been met, and The trigger condition is met based at least in part on a determination that at least one null data message has been received from the AP, or that a predetermined threshold number of polls have timed out, or a combination thereof. Based at least in part on identifying that, the station may be operable to modify the timing for polling the AP.

  [0020] A non-transitory computer readable medium for wireless communication at a station is described. The non-transitory computer readable medium identifies to the processor to determine the DTIM period, to poll the AP during the DTIM period, and while the station is in sleep mode, and that the trigger condition has been met. And where the trigger condition is based at least in part on a determination that at least one null data message has been received from the AP, or that a predetermined threshold number of polls have timed out, or a combination thereof, Instructions operable to cause the station to modify the timing for polling the AP based at least in part on identifying that the trigger condition has been met may be included.

  [0021] Some examples of the methods, apparatus, and non-transitory computer readable media described above further include a process, feature, Means or instructions may be included. Some examples of the methods, apparatus, and non-transitory computer readable media described above further include processes, features, means for removing an AP from the list upon expiration of an aging factor associated with the AP, Or it may contain instructions.

  [0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described above further include a process, features, Means or instructions may be included. Some examples of the methods, apparatus, and non-transitory computer readable media described above are further processes, features, means, or instructions for returning to polling an AP during a second DTIM period according to default timing. Can be included. Some examples of the methods, apparatus, and non-transitory computer readable media described above are further at least partially in a second identification that a trigger condition may be met during a second DTIM period. Based on, it may include a process, feature, means, or instruction for modifying the default timing for the station to poll the AP.

  [0023] In some examples of the methods, apparatus, and non-transitory computer readable media described above, modifying the timing identifies the remaining portion of the DTIM period and the remaining portion of the DTIM period. In between, stopping polling the AP. Some examples of the methods, apparatus, and non-transitory computer readable media described above may further include a process, feature, means, or instruction for resuming polling the AP during the immediately following DTIM period.

  [0024] In some examples of the methods, apparatus, and non-transitory computer readable media described above, modifying the timing comprises adjusting the time interval between polls that the station transmits to the AP. In some examples of the methods, apparatus, and non-transitory computer readable media described above, modifying the timing identifies the number of consecutive polls sent from the station to the AP that may have timed out. And disabling polling for the station based at least in part on a determination that the number of consecutive polls may be greater than a predetermined threshold.

  [0025] Some examples of the methods, apparatus, and non-transitory computer readable media described above further describe the percentage of multiple polls that may have timed out for multiple polls sent from the station to the AP. It may include a process, feature, means, or instruction for identification. Some examples of the methods, apparatus, and non-transitory computer readable media described above may further cause the station to poll the AP based at least in part on the determination that the percentage may be greater than a predetermined threshold. May include processes, features, means, or instructions for disabling modifying the timing to do.

  [0026] Some examples of the methods, apparatus, and non-transitory computer-readable media described above are further based on a first based on a determination that the percentage may be greater than a predetermined threshold. May include a process, feature, means, or instruction for deleting a block acknowledgment (ACK) session. Some examples of the methods, apparatus, and non-transitory computer readable media described above further include a process for activating a second block ACK session with an AP after deleting the first block ACK session, Features, means, or instructions may be included.

  [0027] In some examples of the methods, apparatus, and non-transitory computer readable media described above, polling an AP is the number of null messages received from the AP, or a threshold number of timed out polls. And transmitting a plurality of power saving polls (PS-Polls) to the AP at a plurality of intervals. In some examples of the methods, apparatus, and non-transitory computer readable media described above, polling an AP may include multiple speculations for the AP in multiple intervals based at least in part on the determined DTIM period. Sending a speculative power saving poll (PS-Poll).

  [0028] A method of wireless communication at a station is described. The method identifies a first activity level in an RF spectrum band used by a first wireless device based at least in part on traffic transmitted to and received by the first wireless device. Identifying a second activity level in the RF spectrum band based at least in part on transmission and reception activity for at least one second wireless device at the first wireless device; Estimating the congestion level for the RF spectrum based at least in part on the activity level and the second activity level and during the awake interval in which the first wireless device is in awake mode Less Based in part on also, the wireless device may include determining an ITO interval for stays in the awake mode.

  [0029] An apparatus for wireless communication at a station is described. The apparatus identifies a first activity level in an RF spectrum band used by a first wireless device based at least in part on traffic transmitted to and received by the first wireless device. Means at the first wireless device for identifying a second activity level in the RF spectrum band based at least in part on transmission and reception activity for the at least one second wireless device; Between a means for estimating a congestion level for the RF spectrum based at least in part on the first activity level and the second activity level, and an awake interval in which the first wireless device is in awake mode Estimated Based at least in part on 輳 level, the wireless device may include means for determining the ITO interval for stays in the awake mode.

  [0030] Another apparatus for wireless communication at a station is described. The apparatus can include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions cause the processor to determine a first activity level in the RF spectrum band used by the first wireless device based at least in part on traffic transmitted to and received by the first wireless device. Identifying, at a first wireless device, identifying a second activity level in the RF spectrum band based at least in part on transmission and reception activity for at least one second wireless device; Estimated between estimating the congestion level for the RF spectrum based at least in part on the first activity level and the second activity level and the awake interval in which the first wireless device is in awake mode. Congestion Based at least in part on the bell, it may be operable to wireless device to perform the method comprising: determining the ITO interval for stays in the awake mode.

  [0031] A non-transitory computer readable medium for wireless communication at a station is described. The non-transitory computer readable medium is the first in the RF spectral band used by the first wireless device based at least in part on the traffic transmitted to and received by the processor, the first wireless device. Identifying a first activity level and, at the first wireless device, determining a second activity level in the RF spectrum band based at least in part on transmission and reception activity for at least one second wireless device. Between identifying and estimating a congestion level for the RF spectrum based at least in part on the first activity level and the second activity level, and between awake where the first wireless device is in awake mode Between, based at least in part on the estimated congestion level, the wireless device may comprise an operation possible is commanded to take place and determining the ITO interval for stays in the awake mode.

  [0032] In some examples of the methods, apparatus, and non-transitory computer readable media described above, estimating the level of congestion includes applying a scaling factor associated with the awake interval to apply the first and first Scaling the two activity levels and estimating a congestion level for the RF spectral band based at least in part on the scaled first and second activity levels.

  [0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, traffic transmitted to and received by the first wireless device is transmitted to the first wireless device. Unicast data. In some examples of the methods, apparatus, and non-transitory computer readable media described above, transmission and reception activity for at least a second wireless device that is on is transmitted and received traffic associated with the first wireless device. With measurements of all wireless communication network activity in the RF spectrum band.

4 illustrates an example system for wireless communication at a station that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates an example wireless network that supports adaptive inactivity timeout management in accordance with aspects of the disclosure. 4 illustrates an example polling procedure that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates an example polling procedure that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates an example polling procedure that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. FIG. 4 illustrates a block diagram of a device that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. FIG. 4 illustrates a block diagram of a device that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. FIG. 4 illustrates a block diagram of a device that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. FIG. 3 illustrates a block diagram of a system including a STA that supports adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates a method for adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates a method for adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates a method for adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates a method for adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates a method for adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates a method for adaptive inactivity timeout management in accordance with aspects of the present disclosure. 4 illustrates a method for adaptive inactivity timeout management in accordance with aspects of the present disclosure.

Detailed description

  [0040] Aspects of the present disclosure are first described in the context of a wireless network. A station (STA) in a wireless network may use an adaptive inactivity timeout management technique to save power when communicating with or connected to an access point (AP). Such techniques may involve the STA going into sleep mode and periodically waking up and listening for beacons (or other signals from the AP). In another technique, the STA periodically sends a poll message to the AP while in sleep mode, and wakes only when the STA determines that a data message is waiting for transmission from the AP based on the poll. Can be up.

  [0041] When the STA wakes up, the STA can wake up for a given period of time after the last data packet has been transmitted or received to ensure that the entire data transmission or reception has been completed. Can stay on. After a given period of time known as the inactivity timeout (ITO) interval, the STA may return to sleep mode. In some cases, if an AP serving the STA is also serving other STAs or mobile devices, there may be a delay in transmission from the AP to the STA, and the STA receives the entire transmission from the AP. You can go back to sleep mode before As network congestion increases, transmissions to the STA can be further delayed, which can cause the STA to miss data packets. This can lead to lower effective throughput for the network since no data packets intended for the STA were received.

  [0042] Further, in some cases, a STA may go into sleep mode before being assigned to a particular multi-user (MU) group. In such a case, the STA can be viewed as a single user (SU) from the AP's perspective, and instead of only sending data to the users in the MU group, the AP also sends it to the STA Since it is seen as a separate SU entity, it may be necessary to add and send data (and in some cases the same data). This can also lead to lower effective throughput for the network.

  [0043] In other situations, an AP may send a round robin message (eg, in unicast transmission) to one STA before the AP moves on to send another message to the second STA. The technique may send or schedule data to multiple STAs. The AP can continue in this way until all messages have been sent to each STA. If multiple STAs are waiting for a message during their respective ITO interval, the STA that the AP will transmit last will respond before the AP transmission (or STA reception) (eg, at the expiration of the ITO interval). (Because it) can go into sleep mode. In other cases, the STA with the shortest ITO interval may go into sleep mode before AP transmission, regardless of when it is scheduled to receive transmissions.

  [0044] From this, in some examples, the STA may have network congestion, a radio frequency (RF) spectrum band (2.4 GHz (GHz), 5 GHz, 60 GHz, etc.), and / or a bandwidth mode of operation ( Techniques that adaptively determine ITO spacing based on 20 megahertz (MHz), 40 MHz, 80 MHz, etc. may be used. For example, the determined ITO spacing varies depending on the bandwidth operating mode, RF spectral bandwidth, and / or congestion level used by the STA, and from a look-up table (LUT) based on the aforementioned factors Can be selected.

  [0045] The STA may also consider a sounding sequence to determine whether data can be transmitted to the STA in the future. Based on the sounding sequence or the interval between sounding sequences, the STA may adjust the currently determined ITO or select a new ITO (eg, from the LUT).

  [0046] In some examples, the congestion level may be determined based on different activity levels within the wireless network. For example, the congestion level can be determined based on the activity level of all other devices in the wireless network, which can be referred to as other activity. Activity levels for other devices in the wireless network may include transmission and reception of data and control information for other devices and STAs in the wireless network operating in the RF spectrum band, and so on. Other congestion metrics as measured at a given STA's receiver include UL traffic, DL traffic, STA basic service set (BSS) traffic (MyBSS traffic), and / or other BSS (OBSS) traffic. May be included. The congestion level can also be based on the amount of data transmitted to and received by a given STA, or the number of frames received therein, which can be referred to as STA reception activity. In some cases, the congestion level may also include scaling factors for other activity levels and / or STA received activity. The scaling factor can vary depending on network conditions or other factors. In some cases, the scaling factor may favor scaling other activity levels for the STA receive activity in determining congestion, for example, if STA receive activity is expected to be low. .

  [0047] Additional adaptive inactivity timeout management techniques that may save power, involving determining when the STA should stop polling the AP, are also described. For example, in sleep mode, the STA may speculatively poll the AP to determine whether data to be sent to the STA is present in a queue at the AP. If the STA receives some null data messages in response to polling, or if the STA experiences some polling timeouts, the STA may stop polling the AP, which saves power sell. Further, in some examples, depending on the number of null data messages or polling timeouts, the STA can poll to help prevent unnecessary polling of the AP if the AP is not responding to polling. The interval between can be changed.

  [0048] Aspects of the present disclosure are further illustrated by and described with reference to device diagrams, system diagrams, and flowcharts related to adaptive inactivity timeout management.

  [0049] FIG. 1 illustrates a wireless local area network (WLAN) 100 (also known as a Wi-Fi network) configured in accordance with various aspects of the present disclosure. The WLAN 100 may include an AP 105 and a plurality of associated STAs 115, such as mobile stations, personal digital assistants (PDAs), other handheld devices, netbooks, notebook computers, tablet computers, laptops, display devices (eg, , TV, computer monitor, etc.), printer, etc. The STA 115 associated with the AP 105 may represent a basic service set (BSS) or an extended service set (ESS). Various STAs 115 in the network can communicate with each other through the AP 105. Also shown is a coverage area 110 of the AP 105, which may represent a basic service area (BSA) of the WLAN 100. An extended network station (not shown) associated with the WLAN 100 may be connected to a wired or wireless distribution system that may allow multiple APs 105 to be connected in ESS. In some cases, the WLAN 100 may support adaptive ITO management where the STA 115 may determine the respective ITO interval based on network congestion, RF spectral bandwidth, or bandwidth operating mode. The congestion level is based on different activity levels within the WLAN 100, and the ITO can be determined during the current or subsequent awake interval. In other examples, the STA 115 may modify the timing or interval between polling messages sent from the STA 115 to the AP 105.

  [0050] Although not shown in FIG. 1, the STA 115 may be located in the intersection of more than one coverage area 110 and may associate with more than one AP 105. The associated set of single AP 105 and STA 115 may be referred to as a BSS. An ESS is a set of connected BSSs. A distribution system (not shown) may be used to connect the AP 105 in ESS. In some cases, the coverage area 110 of the AP 105 may be divided into multiple sectors (also not shown). The WLAN 100 may include different types of APs 105 (eg, metropolitan areas, home networks, etc.), with changing and overlapping coverage areas 110. The two STAs 115 may also communicate directly via the direct wireless link 125 regardless of whether both STAs 115 are in the same coverage area 110. Examples of direct wireless link 120 may include Wi-Fi Direct connections, Wi-Fi Tunneled Direct Link Setup (TDLS) links, and other group connections. STA 115 and AP 105 include, but are not limited to, IEEE 802.11, and 802.11b, 802.11g, 802.11a, 802.11n, 802.11ac, 802.11ad, 802.11ah, 802.11ax, etc. May communicate according to WLAN radio and baseband protocols for the physical and MAC layers from non-versioned versions. In other implementations, a peer-to-peer connection or an ad hoc network may be implemented within the WLAN 100.

  [0051] In some cases, the STA 115 (or AP 105) may be detectable by the central AP 105, but not by other STAs 115 in the coverage area 110 of the central AP 105. For example, one STA 115 may exist at one end of the coverage area 110 of the central AP 105, while another STA 115 may exist at the other end. From this, both STAs 115 may communicate with the AP 105, but may not receive the other transmission. This is because two STAs 115 may not refrain from transmitting on top of each other, so conflicting transmissions for those STAs 115 in a contention based environment (eg, CSMA / CA). Can bring Although the transmission is not identifiable, STAs 115 that are within the same coverage area 110 may be known as hidden nodes. CSMA / CA may be supplemented by exchanging RTS packets sent by the sending STA 115 (or AP 105) and CTS packets sent by the receiving STA 115 (or AP 105). This may alert other devices within the sender and receiver not to transmit during the duration of the primary transmission. From this, RTS / CTS can help mitigate the problem of hidden nodes.

  [0052] When the STA 115 enters sleep mode, it may periodically wake to receive DTIM. The STA 115 may wake fast enough to activate the wireless component used for DTIM reception. In some cases, the STA 115 may also wake early to account for possible timing asynchrony with the AP 105. If the DTIM is not received at the expected time, the STA 115 may wait for a beacon miss timer to expire. If a DTIM (or standard TIM) is received, the STA 115 may then wait for the indicated transmission until a content after beacon (CAB) timer expires. If either timer expires, the STA 115 may reenter sleep mode and wait for the next expected DTIM or beacon.

  [0053] FIG. 2 illustrates an example wireless network 200 for adaptive inactivity timeout management in accordance with various aspects of the disclosure. In FIG. 2, the AP 105-a supports communication in different coverage areas 110. In some examples, coverage area 110 may support different RF spectral bands or different bandwidth operating modes, which may be associated with a particular RF spectral band. For example, AP 105-a may support communication in the 5 GHz spectral band and 80 MHz operation mode in coverage area 110-a. In the coverage area 110-b, the AP 105-a may support communication in the 900 MHz spectrum band and 20 MHz operation mode. In other cases, the AP 105-a may support the same spectral band in each of the coverage areas 110-a and 110-b, but may support different bandwidth operating modes. For example, the AP 105-a may support a 160 MHz operation mode in the coverage area 110-a and support a 40 MHz operation mode in the coverage area 110-b. Furthermore, the AP 105-a may support multiple RF spectrum bands and / or multiple bandwidth operating modes in the coverage area 110. Other RF spectral bands and bandwidth operating modes may be considered without departing from the scope of this disclosure.

  [0054] As shown, the AP 105-a is serving a plurality of STAs 115-a, 115-b, 115-c, and 115-d in the coverage area 110-a. In addition, AP 105-a serving STAs 115-e and 115-f located in coverage area 110-b is shown. In some examples, the STA 115 may use a power saving technique and consequently enter a sleep mode. For example, the STAs 115-a and 115-f may be low power devices (eg, machine type communication (MTC) devices or devices that operate on battery power), which enter sleep mode and transmit data. It may wake up periodically to listen for a beacon from AP 105-a (or another AP, not shown) indicating that it may be available. In some cases, the beacon is a DTIM beacon and can be transmitted periodically by the AP 105-a or can be transmitted by the AP 105-a only when data is queued at the AP 105-a.

  [0055] In some examples, the STAs 115-a-115-f may remain awake for the duration of the respective ITO interval, which is in the congestion level as well as the RF spectral band or associated bandwidth operating mode. Can be calculated based on For example, the STA 115-a may determine the ITO interval based on the congestion level of the coverage area 110-a, which includes multiple devices (STAs 115-b, 115-c, and 115-d). The ITO spacing can also be determined by the STA 115-f located in the coverage area 110-b. In this case, the congestion determined by the STA 115-f causes the STA 115-a to operate in the coverage area 110-a having more STAs 115 as compared to the number of STAs operating in the coverage area 110-b. Therefore, it may be lower than the congestion determined by the STA 115-a. The STA 115-a may then determine a longer ITO interval compared to the STA 115-f due to the possibility of higher congestion causing additional transmission delays. For example, the STA 115-a may determine that the ITO interval is 25 ms, while the STA 115-f may determine that the ITO interval is 15 ms.

  [0056] In some examples, the congestion level may be determined based on a transmit frame count or a receive frame count associated with a given STA 115. The congestion level can also be determined based on other activity on the particular channel or in the network. For example, if the STA 115 has a large number of received frames, it may indicate that the STA 115 is receiving a lot of data. In such cases, even if the congestion of other activities on the network is relatively low, the congestion level is only the other activity because the STA 115 has experienced a large number of received frames. Can be determined to be higher than if determined based on, which can also lead to different ITO spacing determinations by a given STA. In some cases, the congestion level may be determined based on a weighted factor or scaling associated with other activities and STA receive activity. For example, in some situations, STA reception activity may be weighted higher than other activities on the channel or network, which may have a greater impact on the determined congestion level. Alternatively, other activities can be weighted more than STA receive activities, so that other activities can have a greater impact on the determined congestion level.

  [0057] The ITO spacing for STAs 115-a and 115-f may also be determined based on the RF spectral band. For example, in some cases, the congestion determined by STAs 115-a and 115-f may be similar because both STAs 115-a and 115-f are communicating with the same AP 105-a. In such cases, the ITO spacing determined by STA 115-a may be different from the ITO spacing determined by STA 115-f based on different RF spectral bands or different bandwidth operating modes. For example, the STA 115-f may be communicating in the 5 GHz spectrum band, and the STA 115-a may be communicating in the 2.4 GHz spectrum band. In such a case, STA 115-f may determine a longer ITO spacing than STA 115-a.

  [0058] In another example, STA 115-f may communicate in the same band as STA 115-a, but may utilize a different bandwidth operating mode. For example, both STA 115-a and STA 115-f may operate in the 900 MHz spectral band, while STA 115-a may support a 20 MHz bandwidth operating mode, while STA 115-f operates at 40 MHz bandwidth. Support mode. In such cases, STAs 115-a and 115-f may determine different respective ITO spacings. For example, the STA 115-a may determine that the ITO interval is 50 ms, while the STA 115-f may determine that each ITO interval is 100 ms.

  [0059] In such a case, the AP 105-a may send a sounding sequence to the STA, eg, STA 115-a, indicating that data may be sent to the STA 115-a in the near future. In such a case, the STA 115-a may consider the interval between received sounding sequences when determining the ITO interval, or the number of sounding sequences received from the AP 105-a. In some examples, the ITO interval may be determined based on whether the interval between sounding sequences crosses a threshold or whether the number of sounding sequences received exceeds a threshold. For example, if the interval between successive sounding sequences is showing a tendency to increase, it can be an indication that less data is expected to be sent to the STA 115-a, and thus the shorter ITO An interval can be determined.

  [0060] The ITO interval may also be determined during a current awake interval or a subsequent awake interval. For example, the ITO interval can be determined during the current awake state prior to entering sleep mode. In some cases, ITO can be determined continuously or periodically (eg, after a given time interval has passed). For example, instead of using the ITO interval determined in the subsequent awake interval, the ITO interval can be used in the current awake interval as determined based on congestion during the current awake interval. From this, the ITO spacing can be actively adjusted, selected or determined to accommodate changing network congestion.

  [0061] FIGS. 3A-3C illustrate an example of polling for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. 3A-3C may represent aspects of the technique performed by STA 115 as described above with reference to FIGS. FIG. 3A illustrates a polling procedure in a STA that can save power.

  [0062] In FIG. 3A, the STA listens and receives the DTIM beacon 305-a, which may be transmitted from the AP to the STA. The DTIM beacon 305-a may indicate that the AP has a data packet to be sent to the STA.

  [0063] Based on the DTIM beacon 305-a, the STA sends a power save poll (PS-Poll) message 310-a indicating that the STA is ready to receive queued data packets from the AP. Sent to AP during network sleep interval 335. The AP responds to the PS-Poll message 310-a with a data packet (one or more) and indicates that more data is waiting to be sent to the STA. Thus, the STA receives the data from the AP during the ITO interval 315-a (eg, as determined based on the technique described with reference to FIGS. 1 and 2) during the awake interval 330-a. Enter -a. After the last transmission is received and after the ITO interval expires, the STA enters sleep mode during sleep interval 335-a. During the sleep mode during sleep interval 335-a, the STA determines whether the data is available at the AP for transmission to the STA, by speculative PS-Poll (SPEC PS-Poll) 320. -A can be sent. As shown in FIG. 3A, the AP responds to SPEC PS-Poll 320-a and indicates that more data is available for transmission, and the STA indicates that the ITO interval 315-b Wakes up during the awake interval 330-b until expiration.

  [0064] During the sleep interval 335-b, the STA may send another SPEC PS-Poll to the AP at 320-b, and the AP responds indicating that there is no additional data to send. . Therefore, the STA stays in sleep mode and then listens for the beacon 325-a later, which indicates that in this example no data is available for transmission.

  [0065] In some cases, the AP may not respond to a PS-Poll or SPEC PS-Poll sent by the STA. For example, the STA may have moved outside of the AP's coverage area and may no longer be able to receive messages from the AP. The AP may experience some problems or the network may have high congestion. It may be beneficial to modify the polling procedure at the STA based on the response from the AP or its lack, since continuing to poll the AP can be an unnecessary energy waste.

  [0066] In FIG. 3B, the STA listens and receives the DTIM beacon 305-b, which may be transmitted from the AP to the STA. The DTIM beacon 305-a may indicate that the AP has a data packet to be sent to the STA.

  [0067] Based on the DTIM beacon 305-b, the STA sends a PS-Poll message 310-b to the STA that indicates that the STA is ready to receive the queued data packet from the AP. Transmit to AP during network sleep interval 335-c during mode. The AP responds to the PS-Poll message 310-b with data packet (s) and indicates that more data is waiting to be sent to the STA. As such, the STA may receive additional data from the AP for the duration of the ITO interval 315-c (eg, as determined based on the techniques described with reference to FIGS. 1 and 2). Stay in awake mode. After the last transmission of additional data is received and after the ITO interval expires, the STA enters sleep mode during sleep interval 335-d. During sleep mode, the STA may send a SPEC PS-Poll 320-c to the AP to determine if data is available at the AP for transmission to the STA. As shown in FIG. 3B, the AP responds to the SPEC PS-Poll and indicates that no additional data is available for transmission.

  [0068] At 340-a, the STA sends another SPEC PS-Poll to the AP to determine if data is available at the AP for transmission to the STA. In this case, the STA receives a null message from the AP, or the AP does not respond to the SPEC PS-Poll after a response from the AP after the response timer times out. After that, the STA sends another SPEC PS-Poll at 340-b and again receives no response or null message. After another SPEC PS-Poll is sent in 340-c without a response or null message, the STA stops polling the AP during the rest of the sleep interval 345. In such a case, instead of continuing to poll the AP with SPEC PS-Poll, if the STA receives a threshold number of null messages from the AP or experiences a threshold number of polling timeouts, the STA Save power by staying in sleep mode until the next beacon 325-b, STA receives beacon 325-b. Although this example shows three non-responsive or timeouts, other thresholds may be considered without departing from the scope of this disclosure, and in some cases, thresholds The number may be determined based on the interval between beacons 305-b and 325-b. For example, if the interval between beacons 305-b and 325-b is less than 200 ms, the threshold may be 2, whereas the interval between beacons 305-b and 325-b is 200 ms. If greater, the threshold may be 3 or greater.

  [0069] In some examples, the interval between polls may be based on the number of timeouts or null messages or the duration between beacons, as shown in FIG. 3C. In FIG. 3C, the STA enters sleep mode at 350 and sends a SPEC PS-Poll 320-d after a duration T1. As shown, the AP responds to the SPEC PS-Poll indicating that no additional data is available for transmission. After the same duration T1 (eg, periodically), the STA sends another SPEC PS-Poll 340-d. In this case, the AP does not respond (polling timeout) or the AP responds with a null message. Based on a null message or lack of response from the AP, the STA may decide to send the next SPEC PS-Poll after a larger interval T2. In some cases, the interval T2 may be calculated based on the remaining time (TR1) until the next beacon 325-b. For example, T2 can be calculated to be greater than T1 or TR1 / 2. In another example, if TR1 exceeds a given predetermined threshold (eg, 200ms, 300ms, etc.), T2 can be calculated to be TR1 / 3 or TR1 / 4.

  [0070] After interval T2, the STA sends a SPEC PS-Poll 320-e and receives a response from the AP indicating that no data is available for transmission. When the AP responds to SPEC PS-Poll 320-e, the STA may determine that the next SPEC PS-Poll 340-e should be transmitted after interval T1. In this case, the AP did not respond to SPEC PS-Poll 340-e or the AP sent a null message. Therefore, the STA may decide to send the next SPEC PS-Poll 340-f after the interval T3. The interval T3 can be determined based on the remaining time (TR2) until the next beacon 325-b, or can be calculated in the same manner as T1 described above. After interval T3, the STA sends another SPEC PS-Poll 340-f, which also receives no response or null message from the AP. In this case, because the remaining time until the next beacon 325-b is less than T1, the STA decides not to send another SPEC PS-Poll.

  [0071] While only the above examples are disclosed herein, it should be understood that various other examples can be used when determining the spacing between PS-Polls or SPEC PS-Polls.

  [0072] FIG. 4 illustrates a block diagram 400 of a wireless device 405 that supports adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The wireless device 405 may be an example of an aspect of the STA 115 as described with reference to FIG. Wireless device 405 may include a receiver 410, an adaptive inactivity timeout manager 415, and a transmitter 420. Wireless device 405 may also include a processor. Each of these components may be in communication with each other (eg, via one or more buses).

  [0073] The receiver 410 may include control information, user data, or packets associated with various information channels (eg, information related to adaptive inactivity timeout management, data channels, and control channels, etc.). Information can be received. Information can be communicated to other components of the device. Receiver 410 may be an example of aspects of transceiver 735 described with reference to FIG.

  [0074] The adaptive inactivity timeout manager 415 may be an example of an aspect of the adaptive inactivity timeout manager 715 described with reference to FIG. The adaptive inactivity timeout manager 415 communicates with and communicates with APs in the wireless communication network during an awake interval when the wireless device is in awake mode (identifies the RF spectrum band). And determining a congestion level associated with the RF spectral band and wirelessly based on the identified RF spectral band and the determined congestion level during one awake interval of the awake intervals. Determining the ITO spacing for the device to remain in awake mode.

  [0075] The adaptive inactivity timeout manager 415 also determines the DTIM period, polls the AP during the DTIM period, and while the station is in sleep mode, and the trigger condition has been met. And where the trigger condition is based on a determination that at least one null data message has been received from the AP, or that a predetermined threshold number of polls have timed out, or a combination thereof, Based on identifying that is satisfied, the station may modify the timing for polling the AP.

  [0076] The adaptive inactivity timeout manager 415 also includes a first in the RF spectrum band used by the first wireless device based on traffic transmitted to and received by the first wireless device. Identifying an activity level; identifying a second activity level in the RF spectrum band based on transmission and reception activity for at least one second wireless device at the first wireless device; Based on the estimated congestion level during the awake interval during which the first wireless device is in awake mode and estimating the congestion level for the RF spectrum based on the one activity level and the second activity level It may be carried out and determining the ITO interval for the wireless device remains in the awake mode.

  [0077] The transmitter 420 may transmit signals generated by other components of the device. In some examples, transmitter 420 may be collocated with receiver 410 in a transceiver module. For example, the transmitter 420 may be an example of an aspect of the transceiver 735 described with reference to FIG. The transmitter 420 can include a single antenna or it can include a set of antennas.

  [0078] FIG. 5 illustrates a block diagram 500 of a wireless device 505 that supports adaptive inactivity timeout management in accordance with various aspects of the present disclosure. Wireless device 505 may be an example of an aspect of wireless device 405 or STA 115 as described with reference to FIGS. The wireless device 505 may include a receiver 510, an adaptive inactivity timeout manager 515, and a transmitter 520. Wireless device 505 may also include a processor. Each of these components may be in communication with each other (eg, via one or more buses).

  [0079] The receiver 510 may include control information, user data, or packets associated with various information channels (eg, information related to adaptive inactivity timeout management, data channels, and control channels, etc.). Information can be received. Information can be communicated to other components of the device. Receiver 510 may be an example of aspects of transceiver 735 described with reference to FIG.

  [0080] The adaptive inactivity timeout manager 515 may be an example of an aspect of the adaptive inactivity timeout manager 715 described with reference to FIG. The adaptive inactivity timeout manager 515 may also include a communication manager 530, an RF band component 535, a congestion component 540, an ITO component 545, a DTIM component 550, a polling component 555, and a trigger component 560.

  [0081] The communication manager 530 may communicate with an AP in the wireless communication network during an awake interval in which the wireless device is in an awake mode. In some cases, stations and APs operate according to at least a MU-MIMO mode, or a SU-MC mode, or a combination thereof.

  [0082] The RF band component 535 may identify the RF spectral band used by the wireless device to communicate with the AP. In some cases, identifying the RF spectrum band used by the wireless device includes identifying the bandwidth mode of operation used by the wireless device to communicate with the AP.

  [0083] In some cases, the bandwidth operating mode is a 20 megahertz (MHz) bandwidth mode, or 40 MHz bandwidth mode, or 80 MHz bandwidth mode, or 160 MHz bandwidth mode, or 80 + 80 MHz bandwidth mode, or Including a combination of In some cases, identifying the RF spectrum band used by the wireless device includes identifying an RF spectrum range associated with the wireless communication network used by the wireless device to communicate with the AP. In some cases, the RF spectral range used by the wireless communication network is associated with at least a 2.4 gigahertz (GHz) spectrum, or a 5 GHz spectrum, or a 900 MHz spectrum, or a 60 GHz spectrum.

  [0084] The congestion component 540 is used by the first wireless device based on determining the congestion level associated with the RF spectrum band and traffic transmitted to and received by the first wireless device. Identifying a first activity level in a radio frequency (RF) spectrum band to be transmitted and at the first wireless device based on transmission and reception activity for at least one second wireless device Identifying a second activity level therein and estimating a congestion level for the RF spectrum based on the first activity level and the second activity level.

  [0085] In some cases, determining the congestion level associated with the RF spectral band includes determining the congestion level associated with the RF spectral band during the first awake interval. In some cases, the congestion level is determined based on data received by the station in the RF spectrum band. In some cases, the congestion level is further determined based on other activity in the wireless communication network in the RF spectrum band. In some cases, estimating the congestion level may include scaling the first and second activity levels by applying a scaling factor associated with the awake interval, and scaling the first and second scaled values. Estimating a congestion level for the RF spectrum band based on the activity level of

  [0086] In some cases, traffic transmitted to and received by the first wireless device includes unicast data transmitted to the first wireless device. In some cases, the transmit and receive activity for at least one second wireless device is a percentage of all wireless communication network activity in the RF spectrum band other than transmit and receive traffic associated with the first wireless device. Includes measurements.

  [0087] The ITO component 545 determines the ITO interval for the wireless device to remain in awake mode based on the identified RF spectral band and the determined congestion level during one awake interval of the awake intervals. During the determination, increasing the ITO interval for the wireless device to remain in awake mode, and the awake interval during which the first wireless device is in awake mode, the wireless device Determining the ITO spacing to remain in awake mode.

  [0088] In some cases, determining the ITO interval determines the ITO interval for the wireless device to remain in awake mode during the first awake interval, or subsequent awake interval, or a combination thereof. Including that. In some cases, determining the ITO interval is based on receiving the multiple sounding triggers, determining the interval between the sounding triggers of the received multiple sounding sequences, and based on the determined interval. Determining the ITO spacing. In some cases, determining the ITO spacing includes determining that the congestion level associated with the RF spectral band is greater than a predetermined threshold for the identified RF spectral band.

  [0089] The DTIM component 550 may determine a DTIM period.

  [0090] The polling component 555 polls the AP during the DTIM period and while the station is in sleep mode, and returns to polling the AP during the second DTIM period according to the default timing. Modifying the default timing for the station to poll the AP based on the second identification that the trigger condition was met during the second DTIM period, and polling the AP during the immediately following DTIM period Based on identifying that the trigger condition has been met, modifying the timing for the station to poll the AP and polling timed out for the set of polls sent from the station to the AP Identifying a set percentage and the percentage is Based on a determination that greater than have value, the station can perform the disabling modifying the timing for polling AP.

  [0091] In some cases, polling the AP includes sending multiple speculative PS-Polls to the AP in a set of intervals based on the determined DTIM period. In some cases, modifying the timing includes identifying the remaining portion of the DTIM period and stopping polling the AP during the remaining portion of the DTIM period. In some cases, modifying the timing is based on identifying the number of consecutive polls sent from the station to the AP that timed out and determining that the number of consecutive polls is greater than a predetermined threshold, Disabling polling for the station. In some cases, polling an AP sends multiple PS-Polls to the AP in a set of intervals based on the number of null messages received from the AP, or the number of timed out polling thresholds. Including that. In some cases, modifying the timing includes adjusting the time interval between polls that the station sends to the AP.

  [0092] The trigger component 560 may identify that a trigger condition has been met, where the trigger condition is that at least one null data message has been received from the AP or a predetermined threshold number of polls has been received. Based on a determination that a timeout has occurred, or a combination thereof.

  [0093] The transmitter 520 may transmit signals generated by other components of the device. In some examples, transmitter 520 may be collocated with receiver 510 in a transceiver module. For example, the transmitter 520 can be an example of an aspect of the transceiver 735 described with reference to FIG. The transmitter 520 can include a single antenna or it can include a set of antennas.

  [0094] FIG. 6 shows a block diagram 600 of an adaptive inactivity timeout manager 615 that supports adaptive inactivity timeout management in accordance with various aspects of the disclosure. The adaptive inactivity timeout manager 615 is an implementation of the adaptive inactivity timeout manager 415, adaptive inactivity timeout manager 515, or aspects of the adaptive inactivity timeout manager 715 described with reference to FIGS. It can be an example. Adaptive inactivity timeout manager 615 includes communication manager 620, RF band component 625, congestion component 630, ITO component 635, DTIM component 640, polling component 645, trigger component 650, AP list component 655, association component 660, and block ACK. A component 665 may be included. Each of these modules may communicate directly or indirectly with each other (eg, via one or more buses).

  [0095] The communication manager 620 may communicate with an AP in the wireless communication network during an awake interval in which the wireless device is in an awake mode. In some cases, stations and APs operate according to at least a multi-user multiple-input multiple-output (MU-MIMO) mode, or a single-user multi-client (SU-MC) mode, or a combination thereof.

  [0096] The RF band component 625 may identify a radio frequency (RF) spectrum band used by the wireless device to communicate with the AP. The congestion component 630 determines the congestion level associated with the RF spectrum band and the radio used by the first wireless device based on traffic transmitted to and received by the first wireless device. Identifying a first activity level in a frequency (RF) spectrum band and, at the first wireless device, based on transmission and reception activity for at least one second wireless device, Identifying two activity levels and estimating a congestion level for the RF spectrum based on the first activity level and the second activity level.

  [0097] The ITO component 635 detects an inactivity timeout for the wireless device to remain in awake mode based on the identified RF spectrum band and the determined congestion level during one awake interval. Based on the estimated level of congestion during determining the (ITO) interval, increasing the ITO interval for the wireless device to remain in awake mode, and during the awake interval in which the first wireless device is in awake mode And determining an inactivity timeout (ITO) interval for the wireless device to remain in awake mode.

  [0098] The DTIM component 640 may determine a DTIM period.

  [0099] The polling component 645 polls the AP during the DTIM period and while the station is in sleep mode, and returns to polling the AP during the second DTIM period according to default timing. Modifying the default timing for the station to poll the AP based on the second identification that the trigger condition was met during the second DTIM period, and polling the AP during the immediately following DTIM period Based on identifying that the trigger condition has been met, modifying the timing for the station to poll the AP and polling timed out for the set of polls sent from the station to the AP Identifying a set percentage and the percentage is Based on a determination that greater than have value, the station can perform the disabling modifying the timing for polling AP.

  [0100] The trigger component 650 may identify that the trigger condition has been met, where the trigger condition is that at least one null data message has been received from the AP or a predetermined threshold number of polls has been received. Based on a determination that a timeout has occurred, or a combination thereof.

  [0101] The AP list component 655 may add the AP with the corrected timing to the list of APs and remove the AP from the list upon expiration of the aging factor associated with the AP.

  [0102] The association component 660 may re-associate the station with the AP after modifying the timing for the station to poll the AP.

  [0103] The block ACK component 665 may delete the first block ACK session and delete the first block ACK session based on the determination that the percentage is greater than a predetermined threshold, and A second block ACK session may be activated.

  [0104] FIG. 7 illustrates a diagram of a system 700 that includes a device 705 that supports adaptive inactivity timeout management in accordance with various aspects of the present disclosure. Device 705 may be or may include, for example, a component of wireless device 405, wireless device 505, or STA 115 as described above with reference to FIGS. Device 705 includes two-way audio that includes components for transmitting and receiving communications, including an adaptive inactivity timeout manager 715, a processor 720, memory 725, software 730, a transceiver 735, an antenna 740, and an I / O controller 745. And components for data communication.

  [0105] The processor 720 is an intelligent hardware device (eg, general purpose processor, digital signal processor (DSP), central processing unit (CPU), microcontroller, application specific integrated circuit (ASIC), field programmable gate array (FPGA). , A programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof. In some cases, processor 720 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be incorporated into the processor 720. The processor 720 may be configured to execute computer readable instructions stored in memory to perform various functions (eg, functions or tasks that support adaptive inactivity timeout management).

  [0106] The memory 725 may include random access memory (RAM) and read only memory (ROM). Memory 725 may store computer-readable, computer-executable software 730 that, when executed, includes instructions that cause the processor to perform various functions described herein. In some cases, the memory 725 may, among other things, a basic input-output system (BIOS) that can control basic hardware and / or software operations, such as interaction with peripheral components or devices. Can be included.

  [0107] Software 730 may include code for implementing aspects of the present disclosure, including code for supporting adaptive inactivity timeout management. Software 730 may be stored in a non-transitory computer readable medium such as system memory or other memory. In some cases, software 730 may not be directly executable by a processor, but may cause a computer to perform the functions described herein (eg, when compiled and executed). sell.

  [0108] The transceiver 735 may communicate bi-directionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 735 represents a wireless transceiver and may communicate bi-directionally with another wireless transceiver. Transceiver 735 may also include a modem for modulating the packet and providing the modulated packet to the antenna for transmission and demodulating the packet received from the antenna.

  [0109] In some cases, a wireless device may include a single antenna 740. However, in some cases, the device may have more than one antenna 740, which may be capable of transmitting or receiving multiple wireless transmissions simultaneously.

  [0110] The I / O controller 745 may manage input and output signals for the device 705. The input / output control component 745 may also manage peripheral devices that are not incorporated into the device 705. In some cases, input / output control component 745 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 745 may be an iOS (R), ANDROID (R), MS-DOS (R), MS-WINDOWS (R), OS / 2 (R), UNIX. An operating system such as (registered trademark), LINUX (registered trademark), or another known operating system may be utilized.

  [0111] FIG. 8 shows a flowchart illustrating a method 800 for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The operations of method 800 may be implemented by STA 115 or components thereof as described herein. For example, the operations of method 800 may be performed by an adaptive inactivity timeout manager as described with reference to FIGS. In some examples, the STA 115 may execute a set of codes for controlling functional elements of the device to perform the functions described below. In addition or alternatively, the STA 115 may perform the functional aspects described below using special purpose hardware.

  [0112] At block 805, the STA 115 may communicate with an AP in the wireless communication network during an awake interval in which the wireless device is in awake mode. The operation of block 805 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 805 may be performed by a communication manager as described with reference to FIGS.

  [0113] At block 810, the STA 115 may identify a radio frequency (RF) spectrum band used by the wireless device to communicate with the AP. The operation of block 810 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 810 may be performed by an RF band component as described with reference to FIGS.

  [0114] At block 815, the STA 115 may determine a congestion level associated with the RF spectral band. The operation of block 815 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 815 may be performed by a congestion component as described with reference to FIGS.

  [0115] At block 820, the STA 115 determines whether the wireless device remains in awake mode during one awake interval based on the identified RF spectrum band and the determined congestion level. An activity timeout (ITO) interval can be determined. The operation of block 820 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 820 may be performed by an ITO component as described with reference to FIGS.

  [0116] FIG. 9 shows a flowchart illustrating a method 900 for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The operations of method 900 may be implemented by STA 115 or components thereof as described herein. For example, the operations of method 900 may be performed by an adaptive inactivity timeout manager as described with reference to FIGS. In some examples, the STA 115 may execute a set of codes for controlling functional elements of the device to perform the functions described below. In addition or alternatively, the STA 115 may perform the functional aspects described below using special purpose hardware.

  [0117] In block 905, the STA 115 may determine a DTIM period. The operation of block 905 may be performed according to the method described with reference to FIGS. In certain examples, aspects of the operation of block 905 may be performed by a DTIM component as described with reference to FIGS.

  [0118] In block 910, the STA 115 may poll the AP during the DTIM period and while the station is in sleep mode. The operation of block 910 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 910 may be performed by a polling component as described with reference to FIGS.

  [0119] At block 915, the STA 115 may identify that the trigger condition has been met, where the trigger condition is that at least one null data message has been received from the AP, or a predetermined threshold number of times. Based on a determination that polling has timed out, or a combination thereof. The operation of block 915 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 915 may be performed by a trigger component as described with reference to FIGS.

  [0120] At block 920, the STA 115 may modify the timing for the station to poll the AP based on identifying that the trigger condition has been met. The operation of block 920 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 920 may be performed by a polling component as described with reference to FIGS.

  [0121] FIG. 10 shows a flowchart illustrating a method 1000 for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The operations of method 1000 may be implemented by STA 115 or components thereof as described herein. For example, the operations of method 1000 may be performed by an adaptive inactivity timeout manager as described with reference to FIGS. In some examples, the STA 115 may execute a set of codes for controlling functional elements of the device to perform the functions described below. In addition or alternatively, the STA 115 may perform the functional aspects described below using special purpose hardware.

  [0122] In block 1005, the STA 115 may determine a delivery traffic indication message (DTIM) period. The operation of block 1005 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1005 may be performed by a DTIM component as described with reference to FIGS.

  [0123] At block 1010, the STA 115 may poll the AP during the DTIM period and while the station is in sleep mode. The operations of block 1010 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1010 may be performed by a polling component as described with reference to FIGS.

  [0124] At block 1015, the STA 115 may identify that the trigger condition has been met, where the trigger condition is that at least one null data message has been received from the AP, or a predetermined threshold number of times. Based on a determination that polling has timed out, or a combination thereof. The operation of block 1015 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1015 may be performed by a trigger component as described with reference to FIGS.

  [0125] At block 1020, the STA 115 may modify the timing for the station to poll the AP based on identifying that the trigger condition has been met. The operations of block 1020 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1020 may be performed by a polling component as described with reference to FIGS.

  [0126] At block 1025, the STA 115 may add the AP whose station has modified the timing to the list of APs. The operation of block 1025 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1025 may be performed by an AP list component as described with reference to FIGS.

  [0127] At block 1030, the STA 115 may remove the AP from the list upon expiration of the aging factor associated with the AP. The operations of block 1030 may be performed according to the method described with reference to FIGS. In certain examples, aspects of the operation of block 1030 may be performed by an AP list component as described with reference to FIGS.

  [0128] FIG. 11 shows a flowchart illustrating a method 1100 for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The operations of method 1100 may be implemented by STA 115 or components thereof as described herein. For example, the operations of method 1100 may be performed by an adaptive inactivity timeout manager as described with reference to FIGS. In some examples, the STA 115 may execute a set of codes for controlling functional elements of the device to perform the functions described below. In addition or alternatively, the STA 115 may perform the functional aspects described below using special purpose hardware.

  [0129] In block 1105, the STA 115 may determine a DTIM period. The operation of block 1105 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1105 may be performed by a DTIM component as described with reference to FIGS.

  [0130] In block 1110, the STA 115 may poll the AP during the DTIM period and while the station is in sleep mode. The operation of block 1110 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1110 may be performed by a polling component as described with reference to FIGS.

  [0131] At block 1115, the STA 115 may identify that the trigger condition has been met, where the trigger condition is that at least one null data message has been received from the AP or a predetermined threshold number of times. Based on a determination that polling has timed out, or a combination thereof. The operation of block 1115 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1115 may be performed by a trigger component as described with reference to FIGS.

  [0132] At block 1120, the STA 115 may modify the timing for the station to poll the AP based on identifying that the trigger condition has been met. The operation of block 1120 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1120 may be performed by a polling component as described with reference to FIGS.

  [0133] At block 1125, the STA 115 may re-associate with the AP after modifying the timing for the station to poll the AP. The operation of block 1125 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1125 may be performed by an association component as described with reference to FIGS.

  [0134] At block 1130, the STA 115 may return to polling the AP during the second DTIM period according to the default timing. The operation of block 1130 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1130 may be performed by a polling component as described with reference to FIGS.

  [0135] At block 1135, the STA 115 may modify the default timing for the station to poll the AP based on the second identification that the trigger condition was met during the second DTIM period. The operation of block 1135 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1135 may be performed by a polling component as described with reference to FIGS.

  [0136] FIG. 12 shows a flowchart illustrating a method 1200 for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The operations of method 1200 may be implemented by STA 115 or components thereof as described herein. For example, the operations of method 1200 may be performed by an adaptive inactivity timeout manager as described with reference to FIGS. In some examples, the STA 115 may execute a set of codes for controlling functional elements of the device to perform the functions described below. In addition or alternatively, the STA 115 may perform the functional aspects described below using special purpose hardware.

  [0137] In block 1205, the STA 115 may determine a DTIM period. The operation of block 1205 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1205 may be performed by a DTIM component as described with reference to FIGS.

  [0138] At block 1210, the STA 115 may poll the AP during the DTIM period and while the station is in sleep mode. The operations of block 1210 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1210 may be performed by a polling component as described with reference to FIGS.

  [0139] At block 1215, the STA 115 may identify that the trigger condition has been met, where the trigger condition is that at least one null data message has been received from the AP, or a predetermined threshold number of times. Based on a determination that polling has timed out, or a combination thereof. The operation of block 1215 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1215 may be performed by a trigger component as described with reference to FIGS.

  [0140] At block 1220, the STA 115 may modify the timing for the station to poll the AP based on identifying that the trigger condition has been met. The operation of block 1220 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1220 may be performed by a polling component as described with reference to FIGS.

  [0141] Block 1225 may cause the STA 115 to identify the remaining portion of the DTIM period and to stop polling the AP during the remaining portion of the DTIM period. The operation of block 1225 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1225 may be performed by a polling component as described with reference to FIGS.

  [0142] At block 1230, the STA 115 may resume polling the AP during the immediately following DTIM period. The operation of block 1230 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1230 may be performed by a polling component as described with reference to FIGS.

  [0143] FIG. 13 shows a flowchart illustrating a method 1300 for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The operations of method 1300 may be implemented by STA 115 or components thereof as described herein. For example, the operations of method 1300 may be performed by an adaptive inactivity timeout manager as described with reference to FIGS. In some examples, the STA 115 may execute a set of codes for controlling functional elements of the device to perform the functions described below. In addition or alternatively, the STA 115 may perform the functional aspects described below using special purpose hardware.

  [0144] In block 1305, the STA 115 may determine a DTIM period. The operation of block 1305 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1305 may be performed by a DTIM component as described with reference to FIGS.

  [0145] In block 1310, the STA 115 may poll the AP during the DTIM period and while the station is in sleep mode. The operations of block 1310 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1310 may be performed by a polling component as described with reference to FIGS.

  [0146] At block 1315, the STA 115 may identify that the trigger condition has been met, where the trigger condition is that at least one null data message has been received from the AP or a predetermined threshold number of times. Based on a determination that polling has timed out, or a combination thereof. The operation of block 1315 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1315 may be performed by a trigger component as described with reference to FIGS.

  [0147] At block 1320, the STA 115 may modify the timing for the station to poll the AP based on identifying that the trigger condition has been met. The operation of block 1320 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1320 may be performed by a polling component as described with reference to FIGS.

  [0148] At block 1325, the STA 115 may identify the percentage of the polled set that timed out for the set of polls sent from the station to the AP. The operation of block 1325 may be performed according to the method described with reference to FIGS. In one particular example, the operational aspects of block 1325 may be performed by a polling component as described with reference to FIGS.

  [0149] At block 1330, the STA 115 may disable modifying the timing for the station to poll the AP based on the determination that the percentage is greater than a predetermined threshold. The operation of block 1330 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1330 may be performed by a polling component as described with reference to FIGS.

  [0150] FIG. 14 shows a flowchart illustrating a method 1400 for adaptive inactivity timeout management in accordance with various aspects of the present disclosure. The operations of method 1400 may be implemented by STA 115 or components thereof as described herein. For example, the operations of method 1400 may be performed by an adaptive inactivity timeout manager as described with reference to FIGS. In some examples, the STA 115 may execute a set of codes for controlling functional elements of the device to perform the functions described below. In addition or alternatively, the STA 115 may perform the functional aspects described below using special purpose hardware.

  [0151] In block 1405, the STA 115 determines a first activity level in the RF spectrum band used by the first wireless device based on traffic transmitted to and received by the first wireless device. Can be identified. The operation of block 1405 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1405 may be performed by a congestion component as described with reference to FIGS.

  [0152] At block 1410, the STA 115 may identify a second activity level in the RF spectral band based on transmission and reception activity for at least one second wireless device at the first wireless device. The operations of block 1410 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1410 may be performed by a congestion component as described with reference to FIGS.

  [0153] At block 1415, the STA 115 may estimate a congestion level for the RF spectrum based on the first activity level and the second activity level. The operation of block 1415 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1415 may be performed by a congestion component as described with reference to FIGS.

  [0154] At block 1420, the STA 115 may determine an ITO interval for the wireless device to remain in the awake mode based on the estimated congestion level during the awake interval in which the first wireless device is in the awake mode. . The operation of block 1420 may be performed according to the method described with reference to FIGS. In certain examples, the operational aspects of block 1420 may be performed by an ITO component as described with reference to FIGS.

  [0155] It should be noted that the methods described above describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are possible. . Furthermore, aspects from two or more of the methods can be combined.

  [0156] The techniques described herein include code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access. (SC-FDMA) and other systems may be used for various wireless communication systems. The terms “system” and “network” are often used interchangeably. A code division multiple access (CDMA) system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. CDMA2000 covers IS-2000, IS-95, and IS-856 standards. An IS-2000 release may generally be referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes wideband CDMA (WCDMA) and other variants of CDMA. A time division multiple access (TDMA) system may implement a radio technology such as a global system for mobile communications (GSM). Orthogonal frequency division multiple access (OFDMA) systems include Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM. , Etc. may be implemented.

  [0157] One or more wireless communication systems described herein may support synchronous or asynchronous operation. For synchronous operation, the stations have similar frame timing, and transmissions from different stations can be approximately aligned in time. For asynchronous operation, stations have different frame timings and transmissions from different stations may not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operation.

  [0158] The downlink transmissions described herein may also be referred to as forward link transmissions, while uplink transmissions may also be referred to as reverse link transmissions. For example, each communication link described herein, including the wireless networks 100 and 200 of FIGS. 1 and 2, may include one or more carriers, where each carrier is a plurality of subcarriers (eg, different Frequency waveform signal).

  [0159] The description set forth herein in connection with the appended drawings illustrates exemplary configurations and does not represent every example that may be implemented or within the scope of the claims. The term “exemplary” as used herein does not mean “preferred” or “advantageous over other examples”, but “acts as an example, instance, or illustration” To do. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, can be implemented without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

  [0160] In the accompanying drawings, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes between similar components. Where only the first reference label is used herein, the description is applicable to any one of similar components having the same first reference label regardless of the second reference label It is.

  [0161] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that can be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any of them. Can be represented by a combination.

  [0162] Various exemplary blocks and modules described in connection with the disclosure herein are general purpose processors, DSPs, ASICs, FPGAs or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, Alternatively, it may be implemented or performed using any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be a combination of computing devices (eg, a combination of a digital signal processor (DSP) and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such Configuration).

  [0163] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination of these. Features that implement functions can also be physically located at various locations, including being distributed such that portions of the functions are implemented at different physical locations. Also, as used herein, including in the claims, a list of items (eg, “at least one of” or “one or more of” one “or / or” used in a list of items beginning with a phrase such as “or more of” ”is a list of at least one of A, B, or C, for example, A , B, C, A and B, A and C, B and C, or A and B and C (ie, A, B, and C).

  [0164] Computer-readable media includes both communication media and any non-transitory computer storage media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer readable media includes RAM, ROM, electrically erasable programmable read only memory (EEPROM®), compact disk (CD) ROM or other optical disk storage, magnetic disk storage Can be used to store or carry the desired program code means in the form of an apparatus or other magnetic storage device, or data structure or instructions, accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor Any other non-transitory media that can be played can be provided. Also, any connection is strictly referred to as a computer readable medium. For example, the software uses a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology such as infrared, wireless, and microwave to use a website, server, or other remote source Coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the media definition. As used herein, disk and disc are CD (disc), laser disc (registered trademark) (disc), optical disc (disc), digital versatile disc (DVD) (disc), floppy (Registered trademark) disk and Blu-ray (registered trademark) disc, where the disk normally reproduces data magnetically, while the disc is Data is reproduced optically using a laser. Combinations of the above are also included within the scope of computer-readable media.

  [0165] The description herein is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (59)

A method for wireless communication in a wireless device, comprising:
Communicating with an access point (AP) in a wireless communication network during an awake interval in which the wireless device is in awake mode;
Identifying a radio frequency (RF) spectral band used by the wireless device to communicate with the AP;
Determining a level of congestion associated with the RF spectral band;
Inactivity for the wireless device to remain in the awake mode during at least one of the awake intervals based at least in part on the identified RF spectral band and the determined congestion level Determining a time-out (ITO) interval. Identifying the RF spectral band used by the wireless device is
The method of claim 1, comprising identifying a bandwidth mode of operation used by the wireless device to communicate with the AP.   The bandwidth operating mode comprises a 20 megahertz (MHz) bandwidth mode, or a 40 MHz bandwidth mode, or an 80 MHz bandwidth mode, or a 160 MHz bandwidth mode, or an 80 + 80 MHz bandwidth mode, or a combination thereof. The method described in 1. Identifying the RF spectral band used by the wireless device is
The method of claim 1, comprising identifying an RF spectrum range associated with the wireless communication network used by the wireless device to communicate with the AP.   The RF spectrum range used by the wireless communication network is associated with at least a 2.4 gigahertz (GHz) spectrum, or a 5 GHz spectrum, or a 900 MHz spectrum, or a 60 GHz spectrum, or a combination thereof. Method. Determining the congestion level associated with the RF spectral band is
Determining the level of congestion associated with the RF spectral band during a first awake interval, and determining the ITO interval includes the first awake interval, or a subsequent awake interval, or their The method of claim 1, comprising determining the ITO interval for the wireless device to remain in the awake mode during combination. Determining the ITO spacing is
Receiving a plurality of sounding triggers; determining an interval between sounding triggers of the received plurality of sounding sequences; and determining the ITO interval based at least in part on the determined interval. The method of claim 1, comprising: Determining the ITO spacing is
Determining that the congestion level associated with the RF spectral band is greater than a predetermined threshold for the identified RF spectral band;
The method of claim 1, comprising increasing the ITO spacing for the wireless device to remain in the awake mode.   The method of claim 1, wherein the station and the AP operate according to at least a multi-user multiple-input multiple-output (MU-MIMO) mode, or a single-user multi-client (SU-MC) mode, or a combination thereof.   The method of claim 1, wherein the congestion level is determined based at least in part on data received by the station in the RF spectrum band.   The method of claim 10, wherein the congestion level is further determined based at least in part on other activities in the wireless communication network in the RF spectrum band. A method for wireless communication in a station,
Determining a delivery traffic indication message (DTIM) period;
Polling an access point (AP) during the DTIM period and while the station is in sleep mode;
Identifying that a trigger condition has been met, wherein the trigger condition is a determination that at least one null data message has been received from the AP or a predetermined threshold number of polls have timed out; Or based at least in part on a combination thereof,
Modifying the timing for the station to poll the AP based at least in part on identifying that the trigger condition has been met. The method of claim 12, further comprising: adding the AP whose timing has been modified to a list of APs. The method of claim 13, further comprising: removing the AP from the list upon expiration of an aging factor associated with the AP. Reassociating with the AP after the station has modified the timing for polling the AP;
Returning to polling the AP during a second DTIM period according to default timing;
Modifying the default timing for the station to poll the AP based at least in part on a second identification that the trigger condition was met during the second DTIM period; The method of claim 12. Modifying the timing is
13. The method of claim 12, comprising identifying a remaining portion of the DTIM period and stopping polling the AP during the remaining portion of the DTIM period. The method of claim 16, further comprising resuming polling of the AP during a subsequent DTIM period. Modifying the timing is
13. The method of claim 12, comprising adjusting a time interval between polls that the station sends to the AP. Modifying the timing is
Polling for the station based at least in part on identifying the number of consecutive polls sent from the station to the AP that have timed out and that the number of consecutive polls is greater than a predetermined threshold. 13. The method of claim 12, comprising disabling. Identifying a percentage of the plurality of polls that timed out for a plurality of polls sent from the station to the AP;
13. The method further comprising: disabling modifying the timing for the station to poll the AP based at least in part on a determination that the percentage is greater than a predetermined threshold. The method described. Deleting a first block acknowledgment (ACK) session based at least in part on the determination that the percentage of the plurality of polls that timed out is greater than a predetermined threshold;
The method of claim 12, further comprising: activating a second block ACK session with the AP after deleting the first block ACK session. Polling the AP is
Sending a plurality of power saving polls (PS-Polls) to the AP at multiple intervals based at least in part on the number of null messages received from the AP or the threshold number of timed out polls. The method of claim 12 comprising: Polling the AP is
13. The method of claim 12, comprising: transmitting a plurality of speculative power saving polls (PS-Polls) to the AP at a plurality of intervals based at least in part on the determined DTIM period. A method for wireless communication in a wireless device, comprising:
A first activity level in a radio frequency (RF) spectrum band used by the first wireless device based at least in part on traffic transmitted to and received by the first wireless device. Identifying and
Identifying a second activity level in the RF spectrum band at the first wireless device based at least in part on transmission and reception activity for at least one second wireless device;
Estimating a congestion level for the RF spectral band based at least in part on the first activity level and the second activity level;
During an awake interval in which the first wireless device is in awake mode, an inactivity timeout (ITO) interval for the wireless device to remain in the awake mode based at least in part on the estimated congestion level A method comprising: determining. Estimating the congestion level is
Scaling the first and second activity levels by applying a scaling factor associated with the awake interval;
25. The method of claim 24, comprising: estimating the congestion level for the RF spectral band based at least in part on the scaled first and second activity levels.   25. The method of claim 24, wherein the traffic transmitted to and received by the first wireless device comprises unicast data transmitted to the first wireless device.   The transmit and receive activity for the at least on second wireless device is a measure of all wireless communication network activities in the RF spectrum band other than transmit and receive traffic associated with the first wireless device. 25. The method of claim 24, comprising: An apparatus for wireless communication in a wireless device, comprising:
A processor;
Memory in electronic communication with the processor;
When stored in the memory and executed by the processor, the device includes:
Communicating with an access point (AP) in a wireless communication network during an awake interval in which the wireless device is in awake mode;
Identifying a radio frequency (RF) spectral band used by the wireless device to communicate with the AP;
Determining a level of congestion associated with the RF spectral band;
Inactivity for the wireless device to remain in the awake mode during at least one of the awake intervals based at least in part on the identified RF spectral band and the determined congestion level And an instruction operable to cause a time-out (ITO) interval to be determined. The instructions executable by the processor to identify the RF spectral band used by the wireless device are:
30. The apparatus of claim 28, comprising instructions executable by the processor to identify a bandwidth mode of operation used by the wireless device to communicate with the AP.   30. The bandwidth operating mode comprises a 20 megahertz (MHz) bandwidth mode, or a 40 MHz bandwidth mode, or an 80 MHz bandwidth mode, or a 160 MHz bandwidth mode, or an 80 + 80 MHz bandwidth mode, or a combination thereof. The device described in 1. The instructions executable by the processor to identify the RF spectral band used by the wireless device are:
30. The instructions of claim 28, comprising instructions executable by the processor to identify an RF spectrum range associated with the wireless communication network used by the wireless device to communicate with the AP. apparatus.   32. The RF spectrum range used by the wireless communication network is associated with at least a 2.4 gigahertz (GHz) spectrum, or a 5 GHz spectrum, or a 900 MHz spectrum, or a 60 GHz spectrum, or a combination thereof. apparatus. The instructions executable by the processor to determine the congestion level associated with the RF spectral band are configured to determine the congestion level associated with the RF spectral band during a first awake interval. Comprising instructions executable by the processor;
The instructions executable by the processor to determine the ITO interval are for the wireless device to remain in the awake mode during the first awake interval, or a subsequent awake interval, or a combination thereof. 30. The apparatus of claim 28, comprising instructions executable by the processor to determine the ITO interval. The instructions executable by the processor to determine the ITO interval are:
Receiving multiple sounding triggers;
Determining an interval between sounding triggers of the received plurality of sounding sequences;
29. The apparatus of claim 28, comprising instructions executable by the processor to perform the ITO interval based at least in part on the determined interval. The instructions executable by the processor to determine the ITO interval are:
Determining that the congestion level associated with the RF spectral band is greater than a predetermined threshold for the identified RF spectral band;
30. The apparatus of claim 28, comprising instructions executable by the processor to perform the ITO interval for the wireless device to remain in the awake mode.   30. The apparatus of claim 28, wherein the station and the AP operate according to at least a multi-user multiple-input multiple-output (MU-MIMO) mode, or a single-user multi-client (SU-MC) mode, or a combination thereof.   30. The apparatus of claim 28, wherein the congestion level is determined based at least in part on data received by the station in the RF spectrum band. A device for wireless communication in a station, in a system,
A processor;
Memory in electronic communication with the processor;
When stored in the memory and executed by the processor, the device includes:
Determining a delivery traffic indication message (DTIM) period;
Polling an access point (AP) during the DTIM period and while the station is in sleep mode;
Identifying that a trigger condition has been met, wherein the trigger condition is a determination that at least one null data message has been received from the AP or a predetermined threshold number of polls have timed out; Or based at least in part on a combination thereof,
Instructions that are operable to cause the station to modify timing for polling the AP based at least in part on identifying that the trigger condition has been met, and apparatus. The instructions are
40. The apparatus of claim 38, further executable by the processor to cause the station to add the timing modified AP to a list of APs. The instructions are
40. The apparatus of claim 39, further executable by the processor to perform removal of the AP from the list upon expiration of an aging factor associated with the AP. The instructions are
Reassociating with the AP after the station has modified the timing for polling the AP;
Returning to polling the AP during a second DTIM period according to default timing;
Modifying the default timing for the station to poll the AP based at least in part on a second identification that the trigger condition has been met during the second DTIM period. 40. The apparatus of claim 38, further executable by the processor. The instructions that are executable by the processor to modify the timing are:
Identifying the remainder of the DTIM period;
39. The apparatus of claim 38, comprising instructions executable by the processor to stop polling the AP during the remaining portion of the DTIM period. The instructions are
43. The apparatus of claim 42, further executable by the processor to resume polling the AP during a subsequent DTIM period. The instructions that are executable by the processor to modify the timing are:
39. The apparatus of claim 38, comprising instructions executable by the processor to adjust a time interval between polls that the station transmits to the AP. The instructions that are executable by the processor to modify the timing are:
Identifying the number of consecutive polls sent from the station to the AP that have timed out;
Comprising instructions executable by the processor to perform polling for the station based at least in part on the determination that the number of consecutive polls is greater than a predetermined threshold. Item 40. The apparatus according to Item 38. The instructions are
Identifying a percentage of the plurality of polls that timed out for a plurality of polls sent from the station to the AP;
Further based on the determination that the percentage is greater than a predetermined threshold and disabling the station to modify the timing for polling the AP. 40. The apparatus of claim 38, wherein the apparatus is executable. The instructions are
Deleting a first block acknowledgment (ACK) session based at least in part on the determination that the percentage of the plurality of polls that timed out is greater than a predetermined threshold;
39. The apparatus of claim 38, further executable by the processor to delete the first block ACK session and then activate a second block ACK session with the AP. The instructions executable by the processor to poll the AP are:
Sending a plurality of power saving polls (PS-Polls) to the AP at multiple intervals based at least in part on the number of null messages received from the AP or the threshold number of timed out polls. 40. The apparatus of claim 38, comprising instructions that are executable by the processor to perform. The instructions executable by the processor to poll the AP are:
Instructions executable by the processor to perform a plurality of speculative power saving polls (PS-Polls) to the AP at a plurality of intervals based at least in part on the determined DTIM period. 40. The apparatus of claim 38. An apparatus for wireless communication at a first wireless device, comprising:
A processor;
Memory in electronic communication with the processor;
When stored in the memory and executed by the processor, the device includes:
A first activity level in a radio frequency (RF) spectrum band used by the first wireless device based at least in part on traffic transmitted to and received by the first wireless device. Identifying and
Identifying a second activity level in the RF spectrum band at the first wireless device based at least in part on transmission and reception activity for at least one second wireless device;
Estimating a congestion level for the RF spectral band based at least in part on the first activity level and the second activity level;
During an awake interval in which the first wireless device is in awake mode, an inactivity timeout (ITO) interval for the wireless device to remain in the awake mode based at least in part on the estimated congestion level And an instruction operable to cause the determination to be performed. The instructions executable by the processor to estimate the congestion level are:
Scaling the first and second activity levels by applying a scaling factor associated with the awake interval, and based at least in part on the scaled first and second activity levels; 51. The apparatus of claim 50, comprising instructions executable by the processor to perform the estimation of the congestion level for the RF spectral band.   51. The apparatus of claim 50, wherein the traffic transmitted to and received by the first wireless device comprises unicast data transmitted to the first wireless device.   The transmit and receive activity for the at least on second wireless device is a measure of all wireless communication network activities in the RF spectrum band other than transmit and receive traffic associated with the first wireless device. 51. The apparatus of claim 50, comprising: An apparatus for wireless communication in a wireless device comprising:
Means for communicating with an access point (AP) in a wireless communication network during an awake interval in which the wireless device is in an awake mode;
Means for identifying a radio frequency (RF) spectral band used by the wireless device to communicate with the AP;
Means for determining a congestion level associated with the RF spectral band;
Inactivity for the wireless device to remain in the awake mode during at least one of the awake intervals based at least in part on the identified RF spectral band and the determined congestion level Means for determining a time-out (ITO) interval. A device for wireless communication in a station,
Means for determining a delivery traffic indication message (DTIM) period;
Means for polling an access point (AP) during the DTIM period and while the station is in sleep mode;
Means for identifying that a trigger condition has been met, wherein the trigger condition is that at least one null data message has been received from the AP or a predetermined threshold number of polls have timed out Based at least in part on a decision, or a combination thereof,
Means for modifying the timing for the station to poll the AP based at least in part on identifying that the trigger condition has been met. An apparatus for wireless communication at a first wireless device comprising:
A first activity level in a radio frequency (RF) spectrum band used by the first wireless device based at least in part on traffic transmitted to and received by the first wireless device. A means for identification;
Means for identifying a second activity level in the RF spectrum band at the first wireless device based at least in part on transmission and reception activity for at least one second wireless device;
Means for estimating a congestion level for the RF spectrum based at least in part on the first activity level and the second activity level;
During an awake interval in which the first wireless device is in awake mode, an inactivity timeout (ITO) interval for the wireless device to remain in the awake mode based at least in part on the estimated congestion level A device comprising: means for determining. A non-transitory computer readable medium storing code for wireless communication at a wireless device, the code comprising:
Communicating with an access point (AP) in a wireless communication network during an awake interval in which the wireless device is in awake mode;
Identifying a radio frequency (RF) spectral band used by the wireless device to communicate with the AP;
Determining a level of congestion associated with the RF spectral band;
Inactivity for the wireless device to remain in the awake mode during at least one of the awake intervals based at least in part on the identified RF spectral band and the determined congestion level A non-transitory computer readable medium comprising instructions executable by a processor to determine a timeout (ITO) interval. A non-transitory computer readable medium storing code for wireless communication at a station, the code comprising:
Determining a delivery traffic indication message (DTIM) period;
Polling an access point (AP) during the DTIM period and while the station is in sleep mode;
Identifying that a trigger condition has been met, wherein the trigger condition is a determination that at least one null data message has been received from the AP or a predetermined threshold number of polls have timed out; Or based at least in part on a combination thereof,
Comprising instructions executable by a processor to modify timing for the station to poll the AP based at least in part on identifying that the trigger condition has been met, Non-transitory computer readable medium. A non-transitory computer readable medium storing code for wireless communication at a wireless device, the code comprising:
A first activity level in a radio frequency (RF) spectrum band used by the first wireless device based at least in part on traffic transmitted to and received by the first wireless device. Identifying and
Identifying a second activity level in the RF spectrum band at the first wireless device based at least in part on transmission and reception activity for at least one second wireless device;
Estimating a congestion level for the RF spectrum based at least in part on the first activity level and the second activity level;
During an awake interval in which the first wireless device is in awake mode, an inactivity timeout (ITO) interval for the wireless device to remain in the awake mode based at least in part on the estimated congestion level A non-transitory computer readable medium comprising instructions that are executable by a processor to determine.

Images