Target wake-up time element extension

Abstract

Certain aspects of the present disclosure provide a method of wireless communication at a first station, comprising: transmitting a first element indicating one or more target wake time (TWT) parameter sets; and transmitting a second element providing information associated with at least one of the one or more TWT parameter sets indicated in the first element.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. patent application serial number 17 / 892,021 filed on August 19, 2022, which is hereby incorporated by reference herein. Background Art Technical Field

[0003] Aspects of the present disclosure relate to wireless communications, and more particularly to techniques for target wake time (TWT) element extension.

[0004] Related technologies

[0005] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, etc. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing the available network resources. Examples of such multiple-access networks include code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, and single carrier FDMA (SC-FDMA) networks.

[0006] In order to address the problem of increased bandwidth requirements required for wireless communication systems, different schemes are being developed to allow multiple user terminals to communicate with a single access point by sharing channel resources while achieving high data throughput. Multiple-input multiple-output (MIMO) technology represents one such approach that has emerged as a popular technology for communication systems. MIMO technology has been adopted in several wireless communication standards, such as the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards. IEEE 802.11 represents a set of wireless local area network (WLAN) air interface standards developed by the IEEE 802.11 committee for short-range communications, such as tens of meters to hundreds of meters. Summary of the invention

[0007] One aspect provides a method for wireless communication at a first station. The method includes: sending a first element indicating one or more target wake time (TWT) parameter sets; and sending a second element providing information associated with at least one of the one or more TWT parameter sets indicated in the first element.

[0008] On the other hand, a method for wireless communication at a second station is provided. The method includes: receiving a first element indicating one or more TWT parameter sets from a first station; receiving a second element from the first station providing information associated with at least one TWT parameter set of the one or more TWT parameter sets indicated in the first element; and communicating in a TWT service period (SP) according to the information provided in the second element.

[0009] On the other hand, a method for wireless communication at a first station is provided. The method includes: sending a first element indicating at least a first TWT parameter set, wherein the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set; and communicating based at least in part on the first TWT parameter set and the extension.

[0010] On the other hand, a method for wireless communication at a second station is provided. The method includes: receiving a first element indicating at least a first TWT parameter set from a first station, wherein the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set; and communicating based at least in part on the first TWT parameter set and the extension.

[0011] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform any one or more of the foregoing methods and / or those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by a processor of the apparatus, cause the apparatus to perform the foregoing methods and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising code for performing the foregoing methods and those described elsewhere herein; and / or an apparatus comprising components for performing the foregoing methods and those described elsewhere herein. By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating through one or more networks.

[0012] For purposes of illustration, the following description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings depict certain features of the various aspects described herein and should not be considered to limit the scope of the disclosure.

[0014] Figure 1 An example wireless communication network is depicted.

[0015] Figure 2 An example disaggregated base station architecture is depicted.

[0016] Figure 3 A block diagram of an example multi-link device (MLD) deployment is depicted.

[0017] Figure 4 Depicted are example communications between an access point (AP) and a wireless station (STA).

[0018] Figure 5A and Figure 5B Example formats for individual TWT parameter sets and broadcast TWT parameter sets are depicted.

[0019] Fig. 6A , Figure 6B and Figure 6C Depicted is an example format for an extended TWT element.

[0020] Fig. 7A , Figure 7B and Figure 7C Depicted is an example format for an extended TWT element.

[0021] Fig. 8A , Figure 8B and Figure 8C Depicted is an example format for an extended TWT element.

[0022] Fig.9A and Fig. 9B An example format for a capability indication is depicted.

[0023] Fig. 10A and Fig. 10B An example format for a capability indication is depicted.

[0024] Fig.11A and Fig. 11B Depicted are example formats of a restricted TWT (r-TWT) traffic information field and a traffic information control field.

[0025] Fig.12 A diagram illustrating an example link between an example TWT information element (IE) and an extended TWT IE is depicted.

[0026] Fig.13 A method for wireless communication is described.

[0027] Fig.14 A method for wireless communication is described.

[0028] Fig.15 A method for wireless communication is described.

[0029] Fig.16 A method for wireless communication is described.

[0030] Fig.17Aspects of an example communications device are depicted.

[0031] Fig.18 Aspects of an example communications device are depicted.

[0032] Fig.19 Aspects of an example communications device are depicted.

[0033] Fig. 20 Aspects of an example communications device are depicted. DETAILED DESCRIPTION

[0034] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for TWT element expansion.

[0035] In wireless communication systems, target wake time (TWT) generally refers to a mechanism that can help reduce power consumption and improve resource efficiency by enabling wireless stations to stay in a low-power state and wake up at a specified time (TWT) to transmit or receive data. TWT can help the AP coordinate the access of different stations (STAs) to the wireless medium, thereby allowing high quality of service with reduced contention or overlap and increased device sleep time to reduce power consumption and extend battery life.

[0036] Parameters for TWT operations may be communicated in TWT information elements (IEs) (which may be referred to simply as TWT elements) included within a frame. As used herein, the term information element or simply element generally refers to a unit of information sent as part of a management frame and provides a signaling mechanism for a wireless device such as an AP to communicate descriptive information (e.g., about the wireless device itself or a wireless network). One or more corresponding future TWTs may be indicated in a TWT IE. However, conventional TWT IEs are limited in the types of parameters they can convey and / or the values ​​of those parameters. In addition, conventional TWT IEs use up reserved fields to extend or carry additional information.

[0037] Therefore, existing fields in the TWT IE may not be able to support signaling of information supported by newer modifications and newer technologies. For example, the channel field of the TWT IE cannot signal greater than 160MHz, while an extremely high throughput (EHT) STA can support 320MHz. Support for larger bandwidths is expanding. Therefore, it may be necessary to develop new technologies and strategies for TWT signaling.

[0038] Various aspects of the present disclosure provide techniques for extending conventional TWT elements to convey information beyond what is supported by the conventional TWT elements. For example, in some cases, a first station may send a first element indicating one or more TWT parameter sets, and send a second element that provides information associated with one or more of the TWT parameter sets in the TWT parameter sets indicated in the first element (e.g., additional information not conveyed in the conventional TWT element). In some cases, a first station may send a first element indicating at least a first TWT parameter set, wherein the first element includes information associated with an extension of the first TWT parameter set, the extension including content that is different from content included in the first TWT parameter set, and communicates based at least in part on the first TWT parameter set and the extension.

[0039] In some systems, extended parameter sets (or extended TWT elements) may be carried in an "extended" version of an existing TWT frame.

[0040] Utilizing one or more of the TWT element extension mechanisms disclosed herein can provide significant advantages. For example, extensions of TWT elements can enable support for signaling of larger bandwidths and additional information, thereby expanding the potential use cases of TWT while retaining the advantages of reduced power consumption, increased reliability, and improved spectral efficiency (e.g., by enabling the device to determine the frequency of wakeup in order to transmit / receive data).

[0041] Introduction to wireless communication networks

[0042] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the protection scope of the present disclosure will be fully conveyed to those skilled in the art. Based on the teachings of this article, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is realized independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to realize a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functions, or structures and functions in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein can be realized by one or more elements of the claims.

[0043] The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects.

[0044] Although specific aspects are described herein, numerous variations and arrangements of these aspects fall within the scope of the present disclosure. Although some benefits and advantages of preferred aspects are mentioned, the scope of protection of the present disclosure is not intended to be limited by specific benefits, uses or objects. More specifically, various aspects of the present disclosure are intended to be broadly applicable to different wireless technologies, system configurations, networks and transmission protocols, some of which are illustrated by way of example in the drawings and the following description of the preferred aspects. The specific embodiments and drawings are merely illustrative of the present disclosure and are not limiting. The scope of the present disclosure is defined by the appended claims and their equivalents.

[0045] The techniques described herein can be used in various broadband wireless communication systems, including communication systems based on orthogonal multiplexing schemes. Examples of such communication systems include space division multiple access (SDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and the like. SDMA systems can make full use of different directions to simultaneously send data belonging to multiple user terminals. TDMA systems can allow multiple user terminals to share the same frequency channel by dividing the transmitted signal into different time slots, each of which is assigned to a different user terminal. OFDMA systems utilize orthogonal frequency division multiplexing (OFDM), which is a modulation technique that divides the entire system bandwidth into multiple orthogonal subcarriers. These subcarriers may also be referred to as tones, bins, and the like. With OFDM, each subcarrier can be independently modulated using data. SC-FDMA systems can use interleaved FDMA (IFDMA) to transmit on subcarriers distributed across the system bandwidth, localized FDMA (LFDMA) to transmit on adjacent subcarrier blocks, or enhanced FDMA (EFDMA) to transmit on multiple adjacent subcarrier blocks. In general, modulation symbols are transmitted in the frequency domain using OFDM and in the time domain using SC-FDMA.

[0046] The teachings herein may be incorporated into (eg, implemented within or performed by) various wired or wireless devices (eg, nodes). In some aspects, a wireless node implemented in accordance with the teachings herein may comprise an access point or an access terminal.

[0047] An access point ("AP") may include, be implemented as, or be referred to as a Node B, a radio network controller ("RNC"), an evolved Node B (eNB), a base station controller ("BSC"), a base transceiver station ("BTS"), a base station ("BS"), a transceiver function unit ("TF"), a radio router, a radio transceiver, a basic service set ("BSS"), an extended service set ("ESS"), a radio base station ("RBS"), or some other terminology.

[0048] An access terminal ("AT") may include, be implemented as, or be referred to as a subscriber station, a subscriber unit, a mobile station (MS), a remote station, a remote terminal, a user terminal (UT), a user agent, a user device, a user equipment (UE), a user station, or some other term. In some implementations, an access terminal may include a cellular phone, a cordless phone, a session initiation protocol ("SIP") phone, a wireless local loop ("WLL") station, a personal digital assistant ("PDA"), a handheld device with wireless connection capabilities, a station ("STA"), or some other suitable processing device connected to a wireless modem. Thus, one or more aspects taught herein may be incorporated into a phone (such as a cellular phone or a smart phone), a computer (such as a laptop), a tablet device, a portable communication device, a portable computing device (such as a personal data assistant), an entertainment device (such as a music or video device, or a satellite radio), a global positioning system (GPS) device, or any other suitable device configured to communicate via a wireless medium or a wired medium. In some aspects, the node is a wireless node. For example, such a wireless node may provide connectivity for or to a network (such as a wide area network such as the Internet or a cellular network) via a wired or wireless communication link.

[0049] Example Wireless Communication System

[0050] Figure 1 is a diagram illustrating an example wireless communication system 100 in accordance with certain aspects of the present disclosure. System 100 may be a multiple-input multiple-output (MIMO) / multi-link operation (MLO) system 100. Figure 1 As shown, access point (AP) 110 includes an association manager 112 that can be configured to take one or more actions described herein. Wireless station (STA) 120a includes an association manager 122 that can be configured to take one or more actions described herein. In various aspects, AP 110 and wireless station 120a can be as described herein. Figure 3 MLD is further described.

[0051] For simplicity, Figure 1Only one AP 110 is shown in the figure. An AP is typically a fixed station that communicates with wireless STAs, and may also be referred to as a base station (BS) or some other term. A wireless STA may be fixed or mobile, and may also be referred to as a mobile STA, a wireless device, or some other term. The AP 110 may communicate with one or more wireless STAs 120 on a downlink (DL) and / or uplink (UL) at any given moment. The DL (i.e., forward link) is a communication link from the AP 110 to the wireless STA 120, and the UL (i.e., reverse link) is a communication link from the wireless STA 120 to the AP 110. The wireless STA 120 may also communicate peer-to-peer with another wireless STA 120, for example, via a direct link (such as a tunneled direct link setup (TDLS)). The system controller 130 may communicate with the access point and provide coordination and control for the access point.

[0052] Although portions of the following disclosure will describe wireless STAs 120 that are capable of communicating via spatial division multiple access (SDMA), for certain aspects, the wireless STAs 120 may also include some wireless STAs 120 that do not support SDMA. Therefore, for such aspects, the AP 110 may be configured to communicate with both SDMA and non-SDMA wireless STAs 120. This approach may facilitate allowing older versions of wireless STAs 120 ("legacy" stations) to remain deployed in an enterprise, thereby extending their useful life, while allowing newer SDMA wireless STAs 120 to be introduced where deemed appropriate.

[0053] The system 100 uses multiple transmit antennas and multiple receive antennas to transmit data on DL and UL. ap The set of K selected wireless stations 120 collectively represents multiple output for DL ​​transmission and multiple input for UL transmission. For pure SDMA, if the data symbol streams of the K wireless STAs are not multiplexed in code, frequency, or time by some means, then it is expected that N ap ≥K≥1. K can be greater than N if the data symbol streams can be multiplexed using TDMA techniques, using different code channels of CDMA, using non-intersecting subband sets of OFDM, etc. ap Each selected wireless STA sends user-specific data to the access point and / or receives user-specific data from the access point. Typically, each selected wireless STA may be equipped with one or more antennas (ie, N sta ≥1). The K selected wireless STAs may have the same or different numbers of antennas.

[0054] The system 100 may be a time division duplex (TDD) system or a frequency division duplex (FDD) system. For a TDD system, DL and UL share the same frequency band. For an FDD system, DL and UL use different frequency bands. The system 100 may also transmit using a single carrier or multiple carriers. Each wireless STA may be equipped with a single antenna or multiple antennas. If the wireless STA 120 shares the same frequency channel by dividing transmission / reception into different time slots, the system 100 may also be a TDMA system, with each time slot being assigned to a different wireless STA 120.

[0055] Figure 2 A block diagram of an AP 110 and two wireless STAs 120m and 120x in a MIMO / MLO system (such as system 100) according to certain aspects of the present disclosure is illustrated. In certain aspects, the AP 110 and / or the wireless STAs 120m and 120x may perform various techniques to ensure that non-AP MLDs are able to receive group-addressed frames. For example, the AP 110 and / or the wireless STAs 120m and 120x may include the following: Figure 1 The corresponding association manager described.

[0056] AP 110 is equipped with N ap The wireless STA 120m is equipped with N antennas 224a to 224t. sta，m antennas 252ma to 252mu, and the wireless STA 120x is equipped with N sta，x The AP 110 is a transmitting entity for DL ​​and a receiving entity for UL. Each wireless STA 120 is a transmitting entity for UL and a receiving entity for DL. As used herein, a "transmitting entity" is an independently operated device or equipment capable of transmitting data via a wireless channel, and a "receiving entity" is an independently operated device or equipment capable of receiving data via a wireless channel. The term communication generally refers to transmission, reception, or both. In the following description, the subscript "DL" means downlink, the subscript "UL" means uplink, and N UL Wireless STAs are selected for simultaneous transmission on the uplink, N DL Wireless STAs are selected for simultaneous transmission on the downlink, N UL May or may not be equal to N DL , and N UL and N DL It may be a static value, or can change for each scheduling interval.Beam steering or some other spatial processing technique may be used at the access points and wireless stations.

[0057] On the UL, at each wireless STA 120 selected for UL transmission, a transmit (TX) data processor 288 receives traffic data from a data source 286 and control data from a controller 280. The TX data processor 288 processes (e.g., encodes, interleaves, and modulates) the traffic data for the wireless station based on a coding and modulation scheme associated with a rate selected for the wireless STA and provides a data symbol stream. The TX spatial processor 290 performs spatial processing on the data symbol stream and transmits the data symbol stream to the N STA. sta，m The antennas provide N sta，m Each transceiver (TMTR) 254 receives and processes (eg, converts to analog, amplifies, filters, and upconverts) a corresponding transmit symbol stream to generate an uplink signal. sta，m The transceivers 254 provide N sta，m UL signal for N sta，m The antennas 252 transmit to the AP 110.

[0058] Scheduling N UL Each of these wireless STAs performs spatial processing on its data symbol stream and sends its set of transmit symbol streams to AP 110 on the UL.

[0059] At AP 110, N ap The antennas 224a to 224ap are connected to the entire N UL Each wireless STA receives the UL signal transmitted on the UL. Each antenna 224 provides a received signal to a corresponding transceiver (RCVR) 222. Each transceiver 222 performs processing complementary to that performed by transceiver 254 and provides a received symbol stream. The receive (RX) spatial processor 240 processes the N ap N of transceivers 222 ap The receiver performs spatial processing on the received symbol streams and provides N UL Receiver spatial processing is performed based on channel correlation matrix inversion (CCMI), minimum mean square error (MMSE), soft interference cancellation (SIC), or some other technique. Each recovered UL data symbol stream is an estimate of the data symbol stream sent by the corresponding wireless station. The RX data processor 242 processes (e.g., demodulates, deinterleaves, and decodes) the stream according to the rate used for each recovered uplink data symbol stream to obtain decoded data. The decoded data for each wireless STA can be provided to the data sink 244 for storage and / or to the controller 230 for further processing.

[0060] On the DL, at AP 110, TX data processor 210 receives N data packets scheduled for downlink transmission from data source 208. DL The TX data processor 210 processes (e.g., encodes, interleaves, and modulates) the traffic data of each wireless station based on the rate selected for each wireless station. The TX data processor 210 processes (e.g., encodes, interleaves, and modulates) the traffic data of each wireless station based on the rate selected for each wireless station. DL The wireless stations provide N DL TX spatial processor 220 performs N DL The DL data symbol streams are spatially processed (such as precoding or beamforming as described in the present disclosure) and are N ap The antennas provide N ap Each transceiver 222 receives and processes a corresponding transmit symbol stream to generate a DL signal. ap The transceiver 222 provides N ap DL signals for N ap The antennas 224 transmit to the wireless STAs.

[0061] At each wireless STA 120, N sta，m The antenna 252 receives N signals from the access point 110. ap Each transceiver 254 processes the received signal from an associated antenna 252 and provides a received symbol stream. The RX spatial processor 260 processes the received signal from the N sta，m N of transceivers 254 sta，m The RX data processor 270 performs receiver spatial processing on the received symbol streams and provides a recovered DL data symbol stream for the wireless station. The receiver spatial processing is performed based on CCMI, MMSE, or some other technique. The RX data processor 270 processes (e.g., demodulates, deinterleaves, and decodes) the recovered DL data symbol stream to obtain decoded data for the wireless station.

[0062] At each wireless STA 120, the channel estimator 278 estimates the DL channel response and provides a DL channel estimate, which may include a channel gain estimate, an SNR estimate, a noise variance, etc. Similarly, the channel estimator 228 estimates the UL channel response and provides a UL channel estimate. The controller 280 of each wireless STA is generally based on the wireless station's downlink channel response matrix H dn，m The controller 230 derives the spatial filter matrix for the wireless station based on the effective UL channel response matrix H up，effTo derive the spatial filter matrix for the AP. The controller 280 of each wireless STA may transmit feedback information (e.g., downlink and / or uplink eigenvectors, eigenvalues, SNR estimates, etc.) to the AP. Controllers 230 and 280 also control the operation of various processing units at AP 110 and wireless STA 120, respectively.

[0063] Overview of Multilink Devices

[0064] As initially described above, a multi-link device (MLD) generally refers to a single device or equipment that includes two or more station (STA) instances or entities that are implemented in the physical (PHY) / medium access control (MAC) layer and configured to communicate on separate wireless links. In some examples, each MLD may include a single higher layer entity, such as a MAC service access point (SAP) that may assign MAC protocol data units (MPDUs) for transmission by separate STA instances.

[0065] Figure 3 A block diagram of an example MLD deployment is shown. Figure 3 As shown in , an access point (AP) MLD can communicate with a non-AP MLD. Each of the AP MLD and the non-AP MLD may include at least two STA entities (hereinafter also referred to as "STA") that can communicate with the associated STA of the other MLD. In the AP MLD, the STA may be an AP STA (a STA used as an AP or simply referred to as "AP"). In the non-AP MLD, the STA may be a non-AP STA (a STA not used as an AP). Also as described above, the MLD may utilize multi-link aggregation (MLA) (which includes packet-level aggregation), whereby MPDUs from the same service ID (TID) may be transmitted via two or more wireless links.

[0066] Various communication modes may be used in the specific implementation of MLD. For example, MLD may communicate in an asynchronous (Async) mode or a synchronous (Sync) mode.

[0067] In asynchronous mode, the STA / AP can count down on both radio links (e.g., via random backoff (RBO)). The start / end of a physical layer convergence protocol (PLCP) protocol data unit (PPDU) can occur independently on each of the radio links. As a result, asynchronous mode can potentially provide latency and aggregation gains. In some cases, relatively complex (and expensive) filters may be required (e.g., in the case of 5GHz+6GHz aggregation).

[0068] In synchronous mode, STA / AP can also count down on two wireless links (e.g., assuming link 1 and link 2). If the first link (e.g., link 1) wins the medium, the two links can send PPDUs at the same time. Therefore, this mode may require some restrictions to minimize intra-device interference.

[0069] Synchronous mode can work in 5GHz+6GHz aggregation and may require relatively low filter performance while still providing latency and aggregation gains. However, due to the tiled architecture of STAs, this latency and aggregation gain may be difficult to achieve.

[0070] Although not shown, the third communication mode may include a basic (e.g., multi-primary channel single link transmission) mode. In the basic mode, the STA / AP may also count down on two wireless links. However, the transmission may only occur on the wireless link that wins the medium. The other wireless link may be blocked by in-device interference greater than -62 decibels per milliwatt (dBm). In this mode, aggregation gain may not be achieved.

[0071] Overview of TWT Service Period (SP)

[0072] As noted above, target wake time (TWT) generally refers to a mechanism that can help reduce power consumption and improve resource efficiency by enabling wireless stations to stay in a low-power state and wake up at a specified time (TWT) to transmit or receive data. TWT can help the AP coordinate access to the wireless medium by different stations (STAs), thereby allowing high quality of service with reduced contention or overlap and increased device sleep time to reduce power consumption and extend battery life. Therefore, the TWT mechanism can help minimize contention between clients and reduce the amount of time that clients in power saving mode are awake.

[0073] The TWT mechanism can be referenced Figure 4 The example scenario shown in FIG. 1 is understood in which an access point (AP) communicates with stations (STAs) S1 and S2. This example assumes that the AP (e.g., 802.11 is an AP) and stations S1 and S2 support TWT. Figure 3 As illustrated in , the AP can send a beacon indicating the TWT service period (SP).

[0074] For the individual TWT case, the STA may be assigned a specific time to wake up and exchange frames. The schedule may be determined and delivered by the AP. The STA may not need to know the TWT values ​​assigned to other STAs. In some cases, if the STA wants to establish a TWT agreement, the STA may communicate its wake-up schedule information to the AP. The AP may then determine the schedule and deliver the TWT value to the STA (for example, taking into account the schedule of other STAs). The STA may wake up and send frames according to the schedule. In explicit mode, the AP may send information about the next TWT to the STA. The STA may wake up again at this next scheduled time to transmit frames and receive new TWT information. In implicit mode, the STA can calculate the next TWT time by adding a fixed value to the current TWT value.

[0075] In some cases, the STA may operate according to TWT parameters indicated by the AP (e.g., in a beacon). In other cases, the STA may negotiate a TWT with the desired parameters. If the schedule is agreed upon, the AP may respond with an "accept TWT" indication.

[0076] For broadcast TWT, the AP sends TWT parameters in the beacon frame using the TWT element, such as Figure 4 exemplified in . TWT elements can also be transmitted in other management frames such as probe response frames. A STA can use the TWT parameters of the most recently received TWT element carried in the management frame of its associated AP. The AP can provide TWT scheduling to all clients that support broadcast TWT. In some cases, the AP can transmit a trigger frame to discover which STAs are awake. The AP will then transmit frames to these STAs, allowing them to re-enter a low power state. A STA can decide to join or leave the broadcast TWT group.

[0077] A TWT element may include one or more TWT parameter sets. The specific content of a TWT parameter set may depend on whether the parameter set is for a single TWT or for a broadcast TWT. For example, Figure 5A illustrates an example format for a single TWT parameter set, and Figure 5B An example format for a broadcast TWT parameter set is illustrated.

[0078] like Figure 5AAs shown in , a separate TWT parameter set may include a request type field that may specify the type of message (e.g., request, suggestion, demand, or acceptance). A separate TWT parameter set may also include a target wake-up time field that may indicate the next time in microseconds that a station participating in a TWT-based communication should wake up for a TWT session. A separate TWT parameter set may also include a TWT group assignment field that may indicate the TWT group of the requesting STA and the assigned TWT value. The TWT group assignment field provides the requesting STA with information about the TWT group to which the STA is assigned. This field contains a TWT group ID, a zero offset (optional) for the group, a TWT unit, and a TWT offset subfield. A separate TWT parameter set may also include a nominal minimum TWT wake-up duration that may indicate the minimum duration that a station should remain awake since the start time of the TWT session in order to be able to receive frames from other stations. A separate TWT parameter set may also include a TWT wake-up interval tail number that may indicate the time interval between subsequent TWT sessions for a station. When TWT is periodic, the value of the TWT wake-up interval may be higher than 0. The individual TWT parameter set may also include a TWT channel field, which may indicate a channel that the station may temporarily use as a primary channel.

[0079] The individual TWT parameter set may also include a Null Data Packet (NDP) paging field indicating that an NDP paging frame will be used. When establishing a TWT, the station may request the AP to use an NDP paging frame. In this case, if the AP has a buffered frame destined for the TWT station, the AP transmits an NDP paging frame at the beginning of the TWT SP. If no NDP paging frame is received, the station may switch to a sleep state after the minimum wake-up duration. NDP paging frames may also be transmitted to notify stations of critical changes in beacons. NDP paging significantly reduces power consumption.

[0080] Aspects related to TWT element extensions

[0081] As described above, parameters for TWT operations may be communicated in a TWT element, which may carry one or more TWT parameter sets, such as Figure 5A and Figure 5B However, the instructions are as follows Figure 5A and Figure 5B Conventional TWT IEs of such parameter sets as shown in are limited in the types of parameters they can convey and / or the values ​​of those parameters. In addition, conventional TWT IEs use up reserved fields to extend or carry additional information.

[0082] Therefore, existing fields in the TWT IE may not be able to support the signaling of information supported by newer modifications and newer technologies. For example, the channel field of the TWT IE cannot signal greater than 160MHz, while an extremely high throughput (EHT) STA can support 320MHz. Support for larger bandwidths is expanding. Therefore, it may be necessary to develop new technologies and strategies for TWT signaling. Future enhancements may also expand support for larger BWs. In addition, 60GHz can have an operating bandwidth (BW) of up to 1.2GHz. Some features are not currently signaled (in existing TWT IEs) but may be of interest in future use cases, such as the ability to signal the splitting of spatial streams between different participants within an SP or the ability to signal additional parameters for restricted TWT (r-TWT).

[0083] Various aspects of the present disclosure provide techniques for extending conventional TWT elements to convey information beyond what is supported by conventional TWT elements. Various aspects of the present disclosure also provide mechanisms for indicating support for new TWT IEs / fields. In other words, since the contents of the new fields may apply to side-by-side fields carried in the current TWT IE, the current (legacy) STA may not be able to support these contents. In addition, some specific implementations may choose not to support one or more of the new fields (and therefore may not indicate their support, even if they have the capability). As will be described in more detail below, various aspects of the present disclosure provide various mechanisms to indicate capabilities for extending TWT support so that both parties (STA and AP) can have a clear expectation of whether the other party can handle the new fields.

[0084] There are various options for providing extended TWT information. For example, according to a first option, additional (e.g., newly defined) TWT elements may be used in addition to existing TWT elements. According to a second option, existing elements may be extended (e.g., to carry additional extended TWT information). For example, an existing TWT element (or some other element, such as a TWT constraint parameter element) may be extended to carry additional extended TWT information.

[0085] For the first option, a first station (e.g., an AP) may send a first element (e.g., a first TWT element) indicating one or more target wake time (TWT) parameter sets. The first station may also send a second element that provides information associated with one or more TWT parameter sets in the TWT parameter sets indicated in the first element. For example, the second element may be sent after the first element, and the information conveyed in the second element may represent an extension of the parameter set included in the first element. For example, the information in the second element may indicate at least one of the following: a signal bandwidth greater than the maximum signal bandwidth that may be indicated in the first element, a bandwidth allocated to one or more different stations, a spatial multiplexing mode, a number of spatial streams; or one or more links to which the information applies.

[0086] According to this option, a new element (which may be defined as an extended TWT element, for example) may be negotiated between two multi-link devices (MLDs) or two STAs. This element may be communicated in a broadcast or unicast frame to provide additional parameters related to one or more TWT parameter sets carried in an (existing) TWT element.

[0087] Fig. 6A An example format for an extended TWT element is depicted. As illustrated, the element may include an element ID extension 602 and an extended TWT information field 604, which may include extended information or indicate the presence of an extended TWT control field 606 or an extended TWT field 608, which may be of variable length. Figure 6B As illustrated in FIG. 1 , the extended TWT parameter field set may include an extended TWT control field 606 and an extended TWT field 608. Figure 6C As illustrated in , the extended TWT control field 606 may include a length, a bitmap, and a mode field. The length field may be used to determine the length of subsequent fields in the extended TWT parameter field / set (which may help maintain backward compatibility while allowing for future extensions of this element). The bitmap may determine which fields are indicated and which fields are reserved (zero). The mode field may also signal the mode used for a particular TWT protocol.

[0088] Fig. 7A Another example format for an extended TWT element is depicted. As illustrated, the element may include a length field, an element ID extension 702, an extended TWT control field 706, and an extended TWT information field 704, which may be of variable length. The length field may be added to enable signaling of different parameter sets. Figure 7BAs illustrated in , the extended TWT control field may include a count field (e.g., to indicate the number (or length) of subsequent extended TWT information fields) and reserved bits. The reserved bits may be used to indicate extensions to different types of TWTs (e.g., individual / broadcast...) and to possible different modes for each TWT mechanism. Figure 7C Example extended TWT parameter set fields that may include an extended TWT time field 708 are illustrated.

[0089] like Fig. 8A As illustrated in FIG. 8 , according to the second option, an existing TWT element may be extended (e.g., to carry additional extended TWT information). As illustrated, a TWT element may include an element ID extension field 802, an extended TWT control field 804, and an extended TWT information field 806. Figure 8B As illustrated in , the extended TWT control field may include a count field (e.g., to indicate the number (or length) of subsequent extended TWT information fields) and reserved bits. The reserved bits may be used to indicate extensions to different types of TWTs (e.g., individual / broadcast...) and to possible different modes for each TWT mechanism. Figure 8C An example extended TWT parameter set field is illustrated which may include an extended TWT time field 808. In some cases, an extended TWT element may include FIG. 6A to FIG. 6C For example, in this case, the extended TWT control field format may include a format / field similar to the format / field shown in FIG. Figure 6C The length, bitmap, and mode fields have similar functionality to that shown in FIG.

[0090] In some systems, an extended parameter set (or extended TWT element) can be carried in an "extended" version of an existing TWT frame. For example, if either peer (AP or client) wants to change one or more parameters belonging to an extended parameter set, the peer can transmit the updated extended parameter set in a (new) extended TWT information frame. Depending on the scenario, the AP can send such an "extended" frame to individual clients (individually addressed) or can transmit the "extended" frame to a group of clients (i.e., to a group address).

[0091] Regardless of the signaling option (additional TWT elements or extensions of existing TWT elements), various types of functionality can be implemented through such extensions. For example, one example functionality that can be signaled by this element is to allow finer time granularity for TWT scheduling. For example, the current finest periodicity granularity that can be supported by TWT (r-TWT) can be one TU (e.g., 1024μs), which may result in a mismatch between the arrival of a particular (e.g., XR) burst and the r-TWT SP. This mismatch with subsequent TWT SPs may grow up to several milliseconds, which may impair the latency performance of latency-sensitive services. Extending the TWT functionality can help synchronize the arrival time of latency-sensitive service bursts with the r-TWT SP at levels below 1024μs (e.g., up to 0μs). In some cases, the granularity can be indicated to the station (e.g., in an extended TWT element or in an extension of an existing TWT element), providing additional flexibility in adapting the TWT-SP start time to expected traffic arrival times less than 1 TU, which can help latency-sensitive traffic and time-sensitive networking (TSN) applications.

[0092] Another functionality that can be signaled via extended TWT is bandwidth greater than 160MHz or bandwidth allocated to different STAs (each STA is allocated a subchannel during TWT). While existing TWT elements can only signal up to 160MHz, and EHT STAs can (optionally) support 320MHz, the extension can support much larger bandwidths.

[0093] Another functionality that can be signaled via extended TWT can allow the exchange of spatial multiplexing modes, where a device can share the same TWT service period (SP) with more than one peer device. In this scheme, a device can share different spatial streams with different peers. Additional functionality can be to indicate the minimum number of spatial streams that support a particular TWT SP.

[0094] Support for this extended TWT element and operations related thereto may be indicated by one or more bits. This indication may be carried in an extended capability element or a HE capability element or an EHT capability element or a (existing) TWT element or some other (new) element.

[0095] like Fig.9A and Fig. 9B As illustrated in FIG. 1 , a single TWT extension support bit in the EHT capability field may be set to indicate support for reception and generation of TWT element extensions. Fig. 10A and Fig. 10BAs illustrated in , in some cases, multiple TWT extension support bits in the EHT capability field may be used to indicate support for the reception and generation of TWT element extensions. For example, each bit may be set to 1 to indicate support for the reception and generation of TWT element extensions with different sets of fields (e.g., extended target wake-up time, supported / required spatial streams, etc.). Although this example shows 2 bits, any number of bits may be used to indicate support for different numbers of parameter sets.

[0096] If the receiving STA supports extended TWT, the receiving STA will apply the additional information (i.e., parameters) provided in the new extended TWT element in combination with the parameters provided in the TWT element. In some cases, the extended parameters can override the parameters in the legacy TWT IE. For example, all legacy STAs comply with the parameters signaled in the (existing) TWT IE signaled in the beacon frame, while the new client complies with the parameters in the extended TWT IE (carried in the beacon) while sharing the same TWT SP with the legacy STA.

[0097] In some cases, the additional information (associated with the first TWT parameter set) may always be included in the transmitted frame carrying the TWT element. In other cases, a subfield in the first TWT parameter set may indicate the presence of additional information (e.g., an extended parameter set). The indication of the presence of additional information in the first parameter set may be signaled via a reserved or existing subfield in the TWT element. For example, a subfield in a control field or a broadcast TWT parameter set field may be used to indicate the presence of additional information. In some cases, the presence of additional information may be carried in a broadcast TWT information subfield. For example, if Fig.11A and Fig. 11B As shown in , the restricted TWT service information subfield can be used to indicate extended TWT parameters. For example, one or more (currently reserved) bits 1104 of the service information control subfield 1102 can be used to signal extended TWT information. This mechanism can be used, for example, to extend an existing R-TWT parameter set (e.g., in the case of a TWT setup only). In some cases, the reserved bits in the service information control field can indicate (possibly via a bitmap) the presence of additional parameters corresponding to the R-TWT parameter set. In some cases, additional parameters can be carried in the broadcast TWT parameter set field.

[0098] In general, the extended TWT element proposed in this article can carry parameter sets belonging to any TWT mechanism (e.g., single TWT, broadcast / restricted TWT, out-of-channel TWT). Fig.12As illustrated in , it is possible for a TWT element to carry parameter sets for more than one TWT SP. In this case, each SP may be identified by a TWT ID (e.g., ID=x and ID=y in the illustrated example). The same ID may be used in the extended TWT element 1204 (and the regular TWT element 1202) to identify the TWT SP to which the additional parameters apply.

[0099] In some cases, if a peer has not indicated support for an extended TWT element, a device supporting the extended TWT element may not include the extended TWT element in a separately addressed TWT setup frame. A device supporting the extended TWT element may include the extended TWT element in a broadcast frame, such as a beacon frame or a broadcast probe response frame.

[0100] Example operation of the station

[0101] Fig.13 An example of a method 1300 for wireless communication at a first station is shown. In some examples, the first station is Figure 1 and Figure 2 AP 110.

[0102] Method 1300 begins at step 1305, where a first element indicating one or more TWT parameter sets is sent. In some cases, the operation of this step refers to the operation of Fig.17 The described circuits for transmitting and / or codes for transmitting, or executable by the circuits and / or the codes.

[0103] Method 1300 then proceeds to step 1310, where a second element is sent that provides information associated with at least one of the one or more TWT parameter sets indicated in the first element. In some cases, the operation of this step refers to the operation described in reference to Fig.17 The described circuits for transmitting and / or codes for transmitting, or executable by the circuits and / or the codes.

[0104] In some aspects, the first station is affiliated with the MLD.

[0105] In some aspects, the first station comprises an AP.

[0106] In some aspects, this information indicates the time granularity used for TWT scheduling.

[0107] In some aspects, the information indicates at least one of: a signal bandwidth greater than a maximum signal bandwidth that may be indicated in the first element; a bandwidth allocated to one or more different stations; a spatial multiplexing mode; a number of spatial streams; or one or more links to which the information applies.

[0108] In some aspects, the method 1300 further includes receiving an indication that the second station supports the second element and the information, wherein the second element is sent based on the indication. In some cases, the operation of this step refers to as described in reference Fig.17 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.

[0109] In some aspects, the indication is received in one or more bits of a capability element. For example, as described above, support for an extended TWT element and operations associated therewith may be indicated by one or more bits. This indication may be carried in an extended capability element or a HE capability element or an EHT capability element or a (existing) TWT element or some other (new) element.

[0110] In some aspects, the information provided in the second element indicates TWT parameters for use by the second station in the TWT SP; and the first element indicates TWT parameters for use by one or more other stations that share the TWT SP with the second station.

[0111] In some aspects, the information indicates one or more other TWT parameters that are used to replace or supplement one or more TWT parameters in the TWT parameter set indicated in the first element.

[0112] In some aspects, the information indicates TWT parameters for at least one of: a separate TWT mechanism, a broadcast TWT mechanism, a restricted TWT mechanism, or an off-channel TWT mechanism.

[0113] In some aspects, the information indicates TWT parameters for a plurality of TWT SPs; and the second element includes a TWT ID for each TWT SP in the plurality of TWT SPs.

[0114] In some aspects, the second element includes at least one TWT ID that matches the TWT ID in the first element and links that information to the TWT parameter set communicated in the first element.

[0115] In some aspects, the first station sends the second element based on and only upon receiving an indication indicating that at least the second station supports the second element.

[0116] In some aspects, the second element is sent in a broadcast frame.

[0117] In some aspects, the second element includes an extended TWT parameter field, which includes an extended TWT control field.

[0118] In some aspects, the extended TWT control field includes at least one of: a length field for indicating the length of a subsequent field in the extended TWT parameter field; or a bitmap for indicating fields included in the extended TWT parameter field.

[0119] In some aspects, the extended TWT control field includes a mode field for indicating at least one of: one or more TWT mechanisms to which the parameters indicated in the extended TWT parameter field apply; or one or more extended modes for one or more TWT mechanisms in the TWT mechanism.

[0120] In one aspect, method 1300 or any aspect related thereto may be performed by, for example, Fig.17 The method 1300 is performed by an apparatus of a communication device 1700, which includes various components that are operable, configured, or adapted to perform the method 1300. The communication device 1700 is described in more detail below.

[0121] It should be noted that Fig.13 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are also possible consistent with the present disclosure.

[0122] Fig.14 An example of a method 1400 for wireless communication at a second station is shown. In some examples, the second station is Figure 1 and Figure 2 STA 120.

[0123] Method 1400 begins at step 1405, where a first element indicating one or more TWT parameter sets is received from a first station. In some cases, the operation of this step refers to the operation of Fig.18 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.

[0124] Method 1400 then proceeds to step 1410, where a second element is received from the first station providing information associated with at least one of the one or more TWT parameter sets indicated in the first element. In some cases, the operation of this step refers to the operation described in reference to Fig.18 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.

[0125] Method 1400 then proceeds to step 1415, where communication is performed in the TWT SP based on the information provided in the second element. In some cases, the operation of this step refers to the operation described in reference to Fig.18 The described circuits for communication and / or codes for communication, or executable by the circuits and / or the codes.

[0126] In some aspects, the second station is affiliated with the MLD.

[0127] In some aspects, the second station comprises a non-AP station.

[0128] In some aspects, the additional information indicates the time granularity used for the TWT field.

[0129] In some aspects, the additional information indicates at least one of: a signal bandwidth greater than a maximum signal bandwidth that may be indicated in the first element; a bandwidth allocated to one or more different stations; a spatial multiplexing mode; a number of spatial streams; or one or more links to which the additional information applies.

[0130] In some aspects, the method 1400 further includes sending an indication to the second station that it supports the second element and the additional information provided in the second element. In some cases, the operation of this step refers to the following steps: Fig.18 The described circuits for transmitting and / or codes for transmitting, or executable by the circuits and / or the codes.

[0131] In some aspects, the indication is sent in one or more bits of the capability element. For example, as described above, support for an extended TWT element and operations associated therewith may be indicated by one or more bits. This indication may be carried in an extended capability element or a HE capability element or an EHT capability element or a (existing) TWT element or some other (new) element.

[0132] In some aspects, the second station shares the TWT SP with one or more other stations that communicate using one of the TWT parameter sets indicated in the first element.

[0133] In some aspects, the additional information indicates one or more other TWT parameters that are used to replace or supplement one or more parameters in the TWT parameter set indicated in the first element.

[0134] In some aspects, the additional information indicates TWT parameters for at least one of: a separate TWT mechanism, a broadcast TWT mechanism, a restricted TWT mechanism, or an off-channel TWT mechanism.

[0135] In some aspects, the additional information indicates TWT parameters for a plurality of TWT SPs; and the second element includes a TWT ID for each of the plurality of TWT SPs.

[0136] In some aspects, the second element includes at least one TWT ID that matches the TWT ID in the first element and links additional information to the TWT parameter set conveyed in the first element.

[0137] In some aspects, the second element is received in a broadcast frame.

[0138] In some aspects, the second element includes an extended TWT parameter field, which includes an extended TWT control field.

[0139] In some aspects, the extended TWT control field includes at least one of: a length field for indicating the length of a subsequent field in the extended TWT parameter field; or a bitmap for indicating fields included in the extended TWT parameter field.

[0140] In some aspects, the extended TWT control field includes a mode field for indicating at least one of: one or more TWT mechanisms to which the parameters indicated in the extended TWT parameter field apply; or one or more extended modes for one or more TWT mechanisms in the TWT mechanism.

[0141] In one aspect, method 1400 or any aspect related thereto may be performed by an apparatus such as Fig.18 The method 1400 is performed by a communication device 1800, which includes various components that are operable, configured, or adapted to perform the method 1400. The communication device 1800 is described in more detail below.

[0142] It should be noted that Fig.14 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are also possible consistent with the present disclosure.

[0143] Fig.15 An example of a method 1500 for wireless communication at a first station is shown. In some examples, the first station is Figure 1 and Figure 2 AP 110.

[0144] Method 1500 begins at step 1505, where a first element indicating at least a first TWT parameter set is sent, where the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set. In some cases, the operation of this step refers to as described in reference Fig.19 The described circuits for transmitting and / or codes for transmitting, or executable by the circuits and / or the codes.

[0145] Method 1500 then proceeds to step 1510, where communication is performed based at least in part on the first TWT parameter set and the extension. In some cases, the operation of this step refers to the operation described in reference to Fig.19 The described circuits for communication and / or codes for communication, or executable by the circuits and / or the codes.

[0146] In some aspects, the information includes a TWT ID that links the extension to the first TWT parameter set.

[0147] In some aspects, the different content includes one or more values ​​for one or more parameters of the first TWT parameter set.

[0148] In some aspects, the different content includes one or more parameters not included in the first TWT parameter set.

[0149] In some aspects, the first station is affiliated with the MLD.

[0150] In some aspects, the first station comprises an AP.

[0151] In one aspect, method 1500 or any aspect related thereto may be performed by an apparatus such as Fig.19 The method 1500 is performed by a communication device 1900, which includes various components that are operable, configured, or adapted to perform the method 1500. The communication device 1900 is described in more detail below.

[0152] It should be noted that Fig.15 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are also possible consistent with the present disclosure.

[0153] Fig.16 An example of a method 1600 for wireless communication at a second station is shown. In some examples, the second station is Figure 1 and Figure 2 STA 120.

[0154] Method 1600 begins at step 1605, where a first element indicating at least a first TWT parameter set is received from a first station, where the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set. In some cases, the operation of this step refers to as described in reference Fig. 20 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.

[0155] Method 1600 then proceeds to step 1610, where communication is performed based at least in part on the first TWT parameter set and the extension. In some cases, the operation of this step refers to the operation described in reference to Fig. 20 The described circuits for communication and / or codes for communication, or executable by the circuits and / or the codes.

[0156] In some aspects, the information includes a TWT ID that links the extension to the first TWT parameter set.

[0157] In some aspects, the different content includes one or more values ​​for one or more parameters of the first TWT parameter set.

[0158] In some aspects, the different content includes one or more parameters not included in the first TWT parameter set.

[0159] In some aspects, the second station is affiliated with the MLD.

[0160] In some aspects, the second station comprises a non-AP.

[0161] In one aspect, method 1600 or any aspect related thereto may be performed by an apparatus such as Fig. 20 The method 1600 is performed by a communication device 2000, which includes various components that are operable, configured, or adapted to perform the method 1600. The communication device 2000 is described in more detail below.

[0162] It should be noted that Fig.16 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are also possible consistent with the present disclosure.

[0163] Example Communication Device

[0164] Fig.17 Depicted are aspects of an example communications device 1700. In some aspects, communications device 1700 is a station, such as described above with respect to Figure 1 and Figure 2 In some aspects, the communication device 1700 is an AP, such as the STA 120 described above. Figure 1 and Figure 2 Describe the AP 110.

[0165] The communication device 1700 includes a processing system 1705 coupled to a transceiver 1745 (e.g., a transmitter and / or a receiver). The transceiver 1745 is configured to transmit and receive signals for the communication device 1700, such as various signals as described herein, via an antenna 1750. The transceiver 1745 may be a reference Figure 2 Examples of aspects of the described transceiver 222 and / or transceiver 254. The processing system 1705 may be configured to perform processing functions for the communication device 1700, including processing signals received by the communication device 1700 and / or to be transmitted by the communication device.

[0166] The processing system 1705 includes one or more processors 1710. In various aspects, the one or more processors 1710 may represent Figure 2170, TX data processor 288, TX spatial processor 290, or controller 280 of the STA 120 illustrated in FIG. In various aspects, one or more processors 1710 may represent Figure 2 17. The one or more processors 1710 are coupled to a computer readable medium / memory 1725 via a bus 1740. In certain aspects, the computer readable medium / memory 1725 is configured to store instructions (e.g., computer executable code) that, when executed by the one or more processors 1710, cause the one or more processors 1710 to perform operations related to the processing of the data. Fig.13 It should be noted that references to a processor performing a function of the communication device 1700 may include one or more processors 1710 performing that function of the communication device 1700.

[0167] In the depicted example, computer readable medium / memory 1725 stores code (e.g., executable instructions), such as code for transmitting 1730 and code for receiving 1735. Processing of code for transmitting 1730 and code for receiving 1735 may cause communication device 1700 to perform operations related to Fig.13 The method 1300 described herein or any aspect related thereto.

[0168] The one or more processors 1710 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1725, including circuits such as circuits for transmitting 1715 and circuits for receiving 1720. Processing using the circuits for transmitting 1715 and the circuits for receiving 1720 may enable the communication device 1700 to perform operations related to Fig.13 The method 1300 described herein or any aspect related thereto.

[0169] The various components of the communication device 1700 may provide for performing Fig.13 Components of the described method 1300 or any aspect thereof. For example, in some cases, components for sending, transmitting, or outputting for sending may include Figure 2 The transmitter unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig.17 The transceiver 1745 and antenna 1750 of the communication device 1700 in FIG. In some cases, components for sending, transmitting, or outputting for sending may include Figure 2 The transmitter unit 222 or antenna 224 of the AP 110 illustrated in FIG. 1 , and / or Fig.17The transceiver 1745 and antenna 1750 of the communication device 1700 in FIG. In some aspects, the components for receiving or obtaining may include Figure 2 The receiver unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig.17 The transceiver 1745 and antenna 1750 of the communication device 1700 in FIG. In some aspects, the components for receiving or obtaining may include Figure 2 The receiver unit 222 or antenna 224 of the AP 110 illustrated in FIG. 1 , and / or Fig.17 The transceiver 1745 and antenna 1750 of the communication device 1700.

[0170] Fig.18 Depicted are aspects of an example communications device 1800. In some aspects, communications device 1800 is a station, such as described above with respect to Figure 1 and Figure 2 STA 120 is described.

[0171] The communication device 1800 includes a processing system 1805 coupled to a transceiver 1855 (e.g., a transmitter and / or a receiver). The transceiver 1855 is configured to transmit and receive signals for the communication device 1800, such as various signals described herein, via an antenna 1860. The transceiver 1855 may be a reference Figure 2 Examples of various aspects of the transceiver 254 are described. The processing system 1805 may be configured to perform processing functions for the communication device 1800, including processing signals received by the communication device 1800 and / or to be transmitted by the communication device.

[0172] The processing system 1805 includes one or more processors 1810. In various aspects, the one or more processors 1810 may represent Figure 2 180. The one or more processors 1810 are coupled to the computer readable medium / memory 1830 via the bus 1850. In some aspects, the computer readable medium / memory 1830 is configured to store instructions (e.g., computer executable code) that, when executed by the one or more processors 1810, cause the one or more processors 1810 to perform operations related to the STA 120. Fig.14 It should be noted that references to a processor performing a function of the communication device 1800 may include one or more processors 1810 performing that function of the communication device 1800.

[0173] In the depicted example, computer readable medium / memory 1830 stores code (e.g., executable instructions), such as code for receiving 1835, code for communicating 1840, and code for sending 1845. Processing of code for receiving 1835, code for communicating 1840, and code for sending 1845 may cause communication device 1800 to perform operations related to Fig.14 The described method 1400 or any aspect related thereto.

[0174] The one or more processors 1810 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1830, including circuits such as circuits for receiving 1815, circuits for communicating 1820, and circuits for transmitting 1825. Processing using the circuits for receiving 1815, the circuits for communicating 1820, and the circuits for transmitting 1825 may enable the communication device 1800 to perform operations related to Fig.14 The described method 1400 or any aspect related thereto.

[0175] The various components of the communication device 1800 may provide for performing Fig.14 Components of the described method 1400 or any aspect thereof. For example, in some cases, components for sending, transmitting, or outputting for sending may include Figure 2 The transmitter unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig.18 The transceiver 1855 and antenna 1860 of the communication device 1800 in FIG. In some aspects, the components for receiving or obtaining may include Figure 2 The receiver unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig.18 The transceiver 1855 and antenna 1860 of the communication device 1800.

[0176] Fig.19 Depicted are aspects of an example communications device 1900. In some aspects, communications device 1900 is a station, such as described above with respect to Figure 1 and Figure 2 In some aspects, the communication device 1900 is an AP, such as the STA 120 described above. Figure 1 and Figure 2 AP 110 is described.

[0177] The communication device 1900 includes a processing system 1905 coupled to a transceiver 1945 (e.g., a transmitter and / or a receiver). The transceiver 1945 is configured to transmit and receive signals for the communication device 1900, such as various signals as described herein, via an antenna 1950. The transceiver 1945 may be a reference Figure 2 Examples of aspects of the described transceiver 222 and / or transceiver 254. The processing system 1905 may be configured to perform processing functions for the communication device 1900, including processing signals received by the communication device 1900 and / or to be transmitted by the communication device.

[0178] The processing system 1905 includes one or more processors 1910. In various aspects, the one or more processors 1910 may represent Figure 2 190, 1910, 1920, 1930, 1940, 1950, 1960, 1970, 1980, 1990, 2000, 2010, 2020, 2030, 2040, 2050, 2060, 2070, 2080, 2090, 2091, 2 Figure 2 19. The one or more processors 1910 are coupled to a computer readable medium / memory 1925 via a bus 1940. In certain aspects, the computer readable medium / memory 1925 is configured to store instructions (e.g., computer executable code) that, when executed by the one or more processors 1910, cause the one or more processors 1910 to perform operations related to the processing of the data. Fig.15 It should be noted that references to a processor performing a function of the communication device 1900 may include one or more processors 1910 performing that function of the communication device 1900.

[0179] In the depicted example, computer readable medium / memory 1925 stores code (e.g., executable instructions), such as code for transmitting 1930 and code for communicating 1935. Processing of code for transmitting 1930 and code for communicating 1935 may cause communication device 1900 to perform operations related to Fig.15 The method 1500 described herein or any aspect related thereto.

[0180] The one or more processors 1910 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1925, including circuits such as circuits for transmitting 1915 and circuits for communicating 1920. Processing by the circuits for transmitting 1915 and circuits for communicating 1920 may enable the communication device 1900 to perform operations relative to Fig.15 The method 1500 described herein or any aspect related thereto.

[0181] The various components of the communication device 1900 may provide for performing Fig.15Components of the described method 1500 or any aspect thereof. For example, in some cases, components for sending, transmitting, or outputting for sending may include Figure 2 The transmitter unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig.19 The transceiver 1945 and antenna 1950 of the communication device 1900 in FIG. In some cases, components for sending, transmitting, or outputting for sending may include Figure 2 The transmitter unit 222 or antenna 224 of the AP 110 illustrated in FIG. 1 , and / or Fig.19 The transceiver 1945 and antenna 1950 of the communication device 1900 in FIG. In some aspects, the components for receiving or obtaining may include Figure 2 The receiver unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig.19 The transceiver 1945 and antenna 1950 of the communication device 1900 in FIG. In some aspects, the components for receiving or obtaining may include Figure 2 The receiver unit 222 or antenna 224 of the AP 110 illustrated in FIG. 1 , and / or Fig.19 The transceiver 1945 and antenna 1950 of the communication device 1900.

[0182] Fig. 20 Depicted are aspects of an example communications device 2000. In some aspects, communications device 2000 is a station, such as described above with respect to Figure 1 and Figure 2 STA 120 is described.

[0183] The communication device 2000 includes a processing system 2005 coupled to a transceiver 2045 (e.g., a transmitter and / or a receiver). The transceiver 2045 is configured to transmit and receive signals for the communication device 2000, such as various signals as described herein, via an antenna 2050. The transceiver 2045 may be a reference Figure 2 Examples of aspects of the transceiver 254 are described. The processing system 2005 may be configured to perform processing functions for the communication device 2000, including processing signals received by the communication device 2000 and / or to be transmitted by the communication device.

[0184] The processing system 2005 includes one or more processors 2010. In various aspects, the one or more processors 2010 may represent Figure 2120 RX data processor 270, TX data processor 288, TX space processor 290 or controller 280 of STA 120 as illustrated in FIG. One or more processors 2010 are coupled to computer readable medium / memory 2025 via bus 2040. In certain aspects, computer readable medium / memory 2025 is configured to store instructions (e.g., computer executable code) that, when executed by one or more processors 2010, cause one or more processors 2010 to perform operations related to the computer readable medium / memory 2025. Fig.16 It should be noted that references to a processor performing a function of the communication device 2000 may include one or more processors 2010 performing that function of the communication device 2000.

[0185] In the depicted example, computer readable medium / memory 2025 stores code (e.g., executable instructions), such as code for receiving 2030 and code for communicating 2035. Processing of code for receiving 2030 and code for communicating 2035 may cause communication device 2000 to perform operations related to communication. Fig.16 The method 1600 described herein or any aspect related thereto.

[0186] The one or more processors 2010 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 2025, including circuits such as circuits for receiving 2015 and circuits for communicating 2020. Processing by the circuits for receiving 2015 and the circuits for communicating 2020 may enable the communication device 2000 to perform operations with respect to Fig.16 The method 1600 described herein or any aspect related thereto.

[0187] The various components of the communication device 2000 may provide for performing Fig.16 Components of the described method 1600 or any aspect thereof. For example, in some cases, components for sending, transmitting, or outputting for sending may include Figure 2 The transmitter unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig. 20 The transceiver 2045 and antenna 2050 of the communication device 2000 in FIG. In some aspects, the components for receiving or obtaining may include Figure 2 The receiver unit 254 or antenna 252 of the STA 120 illustrated in FIG. 1 , and / or Fig. 20 The transceiver 2045 and antenna 2050 of the communication device 2000.

[0188] Sample Clauses

[0189] Specific implementation examples are described in the following numbered clauses:

[0190] Clause 1: A method for wireless communication at a first station, the method comprising: sending a first element indicating one or more TWT parameter sets; and sending a second element providing information associated with at least one TWT parameter set of the one or more TWT parameter sets indicated in the first element.

[0191] Clause 2: The method of clause 1, wherein the first station is affiliated with an MLD.

[0192] Clause 3: The method of any of clauses 1 and 2, wherein the first station comprises an AP.

[0193] Clause 4: A method according to any one of clauses 1 to 3, wherein the information indicates a time granularity for TWT scheduling.

[0194] Clause 5: A method according to any one of clauses 1 to 4, wherein the information indicates at least one of: a signal bandwidth greater than the maximum signal bandwidth that can be indicated in the first element; a bandwidth allocated to one or more different stations; a spatial multiplexing mode; a number of spatial streams; or one or more links to which the information applies.

[0195] Clause 6: A method as described in any of clauses 1 to 5, further comprising: receiving an indication to a second station that the second element supports the second element and the information, wherein the second element is sent based on the indication.

[0196] Clause 7: The method of clause 6, wherein the indication is received in one or more bits of a capability element.

[0197] Clause 8: A method according to clause 6, wherein: the information provided in the second element indicates TWT parameters for use by the second station in a TWT SP; and the first element indicates TWT parameters for use by one or more other stations that share the TWTSP with the second station.

[0198] Clause 9: A method according to any one of clauses 1 to 8, wherein the information indicates one or more other TWT parameters used to replace or supplement one or more TWT parameters in the one or more TWT parameter sets indicated in the first element.

[0199] Clause 10: A method according to any one of clauses 1 to 9, wherein the information indicates TWT parameters for at least one of the following: a separate TWT mechanism, a broadcast TWT mechanism, a restricted TWT mechanism, or an off-channel TWT mechanism.

[0200] Clause 11: A method as described in any of clauses 1 to 10, wherein: the information indicates TWT parameters for a plurality of TWTSPs; and the second element includes a TWT ID for each TWT SP in the plurality of TWTSPs.

[0201] Clause 12: A method according to any one of clauses 1 to 11, wherein: the second element includes at least one TWT ID that matches the TWT ID in the first element and links the information to the TWT parameter set conveyed in the first element.

[0202] Clause 13: A method as described in any of clauses 1 to 12, wherein the first station sends the second element based on receiving an indication indicating that at least the second station supports the second element and only upon receiving the indication.

[0203] Clause 14: A method as described in any of clauses 1 to 13, wherein the second element is sent in a broadcast frame.

[0204] Clause 15: A method according to any one of clauses 1 to 14, wherein the second element comprises an extended TWT parameter field, the extended TWT parameter field comprising an extended TWT control field.

[0205] Clause 16: A method according to clause 15, wherein the extended TWT control field includes at least one of the following: a length field for indicating the length of a subsequent field in the extended TWT parameter field; or a bitmap for indicating the fields included in the extended TWT parameter field.

[0206] Clause 17: A method according to clause 15, wherein the extended TWT control field includes a mode field for indicating at least one of the following: one or more TWT mechanisms to which the parameters indicated in the extended TWT parameter field apply; or one or more extended modes for one or more TWT mechanisms in the TWT mechanisms.

[0207] Clause 18: A method for wireless communication at a second station, the method comprising: receiving a first element indicating one or more TWT parameter sets from a first station; receiving a second element from the first station providing information associated with at least one TWT parameter set of the one or more TWT parameter sets indicated in the first element; and communicating in a TWT SP based on the information provided in the second element.

[0208] Clause 19: The method of clause 18, wherein the second station is affiliated with the MLD.

[0209] Clause 20: The method of any of clauses 18 and 19, wherein the second station comprises a non-AP station.

[0210] Clause 21: A method as described in any of clauses 18 to 20, wherein the additional information indicates a time granularity for the TWT field.

[0211] Clause 22: A method according to any one of clauses 18 to 21, wherein the additional information indicates at least one of: a signal bandwidth greater than the maximum signal bandwidth that can be indicated in the first element; a bandwidth allocated to one or more different stations; a spatial multiplexing mode; a number of spatial streams; or one or more links to which the additional information applies.

[0212] Clause 23: A method as described in any of clauses 18 to 22, further comprising sending an indication to the second station that the second element supports the second element and the additional information provided in the second element.

[0213] Clause 24: A method as described in clause 23, wherein the indication is sent in one or more bits of a capability element.

[0214] Clause 25: The method of clause 23, wherein: the second station shares the TWT SP with one or more other stations communicating using one of the TWT parameter sets indicated in the first element.

[0215] Clause 26: A method according to any one of clauses 18 to 25, wherein the additional information indicates one or more other TWT parameters used to replace or supplement one or more parameters in the one or more TWT parameter sets indicated in the first element.

[0216] Clause 27: A method according to any one of clauses 18 to 26, wherein the additional information indicates TWT parameters for at least one of: a separate TWT mechanism, a broadcast TWT mechanism, a restricted TWT mechanism or an off-channel TWT mechanism.

[0217] Clause 28: A method according to any one of clauses 18 to 27, wherein: the additional information indicates TWT parameters for a plurality of TWT SPs; and the second element comprises a TWT ID for each of the plurality of TWT SPs.

[0218] Clause 29: A method according to any of clauses 18 to 28, wherein: the second element includes at least one TWT ID that matches the TWT ID in the first element and links the additional information to the TWT parameter set conveyed in the first element.

[0219] Clause 30: A method as recited in any one of clauses 18 to 29, wherein the second element is received in a broadcast frame.

[0220] Clause 31: A method according to any of clauses 18 to 30, wherein the second element comprises an extended TWT parameter field, the extended TWT parameter field comprising an extended TWT control field.

[0221] Clause 32: A method according to clause 31, wherein the extended TWT control field includes at least one of the following: a length field for indicating the length of a subsequent field in the extended TWT parameter field; or a bitmap for indicating a field included in the extended TWT parameter field.

[0222] Clause 33: A method according to clause 31, wherein the extended TWT control field includes a mode field for indicating at least one of the following: one or more TWT mechanisms to which the parameters indicated in the extended TWT parameter field apply; or one or more extended modes for one or more TWT mechanisms in the TWT mechanisms.

[0223] Clause 34: A method for wireless communication at a first station, the method comprising: sending a first element indicating at least a first TWT parameter set, wherein the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set; and communicating based at least in part on the first TWT parameter set and the extension.

[0224] Clause 35: A method according to clause 34, wherein the information includes a TWT ID linking the extension to the first TWT parameter set.

[0225] Clause 36: A method according to any of clauses 34 and 35, wherein the different content comprises one or more values ​​for one or more parameters of the first TWT parameter set.

[0226] Clause 37: A method according to any one of clauses 34 to 36, wherein the different content includes one or more parameters not included in the first TWT parameter set.

[0227] Clause 38: The method of any one of clauses 34 to 37, wherein the first station is affiliated with a MLD.

[0228] Clause 39: The method of any one of clauses 34 to 38, wherein the first station comprises an AP.

[0229] Clause 40: A method for wireless communication at a second station, the method comprising: receiving a first element indicating at least a first TWT parameter set from a first station, wherein the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set; and communicating based at least in part on the first TWT parameter set and the extension.

[0230] Clause 41: A method as described in clause 40, wherein the information includes a TWT ID linking the extension to the first TWT parameter set.

[0231] Clause 42: A method according to any of clauses 40 and 41, wherein the different content comprises one or more values ​​for one or more parameters of the first TWT parameter set.

[0232] Clause 43: A method according to any one of clauses 40 to 42, wherein the different content includes one or more parameters not included in the first TWT parameter set.

[0233] Clause 44: The method of any of clauses 40 to 43, wherein the second station is affiliated with a MLD.

[0234] Clause 45: The method of any of clauses 40 to 44, wherein the second station comprises a non-AP.

[0235] Clause 46: A method according to any of clauses 1 to 33, wherein the second element is communicated in an extended version of an existing TWT frame.

[0236] Clause 47: A method according to any of clauses 34 to 43, wherein said extension of said first TWT parameter set is communicated in an extended version of an existing TWT frame.

[0237] Clause 48: An apparatus, the apparatus comprising: a memory including executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method of any one of clauses 1 to 45.

[0238] Clause 49: An apparatus comprising: means for performing the method of any of clauses 1 to 45.

[0239] Clause 50: A non-transitory computer readable medium comprising executable instructions which, when executed by a processor of an apparatus, cause the apparatus to perform the method of any one of clauses 1 to 45.

[0240] Clause 51: A computer program product embodied on a computer readable storage medium, the computer readable storage medium comprising code for performing the method according to any of clauses 1 to 45.

[0241] Additional considerations

[0242] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein are not limited to the scope, applicability or aspects set forth in the claims. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Each example may ignore, replace or add each procedure or component as appropriate. For example, the described method may be performed in a different order than the described order, and various actions may be added, omitted or combined. In addition, features equivalent to some example descriptions may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality that are supplementary or alternative to the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0243] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed using a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic components, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.

[0244] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). As an example, "at least one of a, b, or c" is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination with multiple of the same elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0245] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Additionally, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0246] The method disclosed herein includes one or more actions for implementing the method. The method actions are interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of actions is specified, the order and / or use of specific actions may be modified without departing from the scope of the claims. In addition, the various operations of the method described above may be performed by any appropriate component capable of performing the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors.

[0247] The following claims are not intended to be limited to the various aspects shown herein, but should be given the full scope consistent with the language of the claims. Within the claims, unless otherwise specified, reference to an element in the singular form is not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. Any claim element is not interpreted according to the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "parts for...". All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will later be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims.

Claims

1. A first station configured for wireless communication, the first station comprising: a memory including processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the first station to: Sending a first element indicating one or more TWT parameter sets; as well as A second element is sent that provides information associated with at least one of the one or more TWT parameter sets indicated in the first element.

2. The first station of claim 1, wherein the first station is attached to a multi-link device (MLD).

3. The first station of claim 1, wherein the first station comprises an access point (AP).

4. The first station according to claim 1, wherein the information indicates a time granularity used for TWT scheduling.

5. The first station of claim 1 , wherein the information indicates at least one of: a signal bandwidth greater than a maximum signal bandwidth that can be indicated in said first element; a bandwidth allocated to one or more different stations; Spatial multiplexing mode; number of spatial streams; or The link or links to which the information applies.

6. The first station of claim 1, wherein the one or more processors are further configured to execute the processor-executable instructions and cause the first station to receive an indication that the second station supports the second element and the information, wherein the second element is sent based on the indication.

7. The first station of claim 6, wherein the indication is received in one or more bits of a capability element.

8. The first station according to claim 6, wherein: The information provided in the second element indicates TWT parameters for use by the second station in a TWT service period (SP); and The first element indicates a TWT parameter for use by one or more other stations that share the TWT SP with the second station.

9. The first station according to claim 1, wherein the information indicates one or more other TWT parameters used to replace or supplement one or more TWT parameters in the one or more TWT parameter sets indicated in the first element.

10. The first station of claim 1, wherein the information indicates TWT parameters for at least one of: a separate TWT mechanism, a broadcast TWT mechanism, a restricted TWT mechanism, or an off-channel TWT mechanism.

11. The first station according to claim 1, wherein: The information indicates TWT parameters for a plurality of TWT SPs; and The second element includes a TWT identifier (TWT ID) for each TWT SP of the plurality of TWT SPs.

12. The first station according to claim 1, wherein: The second element includes at least one TWT identifier (TWT ID) that matches the TWT ID in the first element and links the information to the TWT parameter set communicated in the first element.

13. The first station of claim 1, wherein the first station sends the second element based on receiving an indication indicating that at least a second station supports the second element and only upon receiving the indication.

14. The first station of claim 1, wherein the second element is sent in a broadcast frame.

15. The first station of claim 1, wherein the second element comprises an extended TWT parameter field, the extended TWT parameter field comprising an extended TWT control field.

16. The first station of claim 15, wherein the extended TWT control field comprises at least one of: A length field used to indicate the length of a subsequent field in the extended TWT parameter field; or A bitmap used to indicate the fields included in the extended TWT parameter field.

17. The first station of claim 15, wherein the extended TWT control field comprises a mode field for indicating at least one of: one or more TWT mechanisms to which the parameters indicated in the extended TWT parameters field apply; or One or more extended modes for at least one of the one or more TWT mechanisms.

18. A second station configured for wireless communication, the second station comprising: a memory including processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the second station to: receiving, from a first station, a first element indicating one or more target wake time (TWT) parameter sets; receiving, from the first station, a second element providing information associated with at least one of the one or more TWT parameter sets indicated in the first element; as well as Communicate in a TWT service period (SP) based on the information provided in the second element.

19. The second station of claim 18, wherein the second station is attached to a multi-link device (MLD).

20. The second station of claim 18, wherein the second station comprises a non-access point (AP) station.

21. A first station configured for wireless communication, the first station comprising: a memory including processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the first station to: transmitting a first element indicating at least a first target wake time (TWT) parameter set; wherein the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set; as well as Communicate based at least in part on the first TWT parameter set and the extension.

22. The first station of claim 21, wherein the information comprises a TWT identifier (TWT ID) linking the extension to the first TWT parameter set.

23. The first station of claim 21, wherein the different content comprises one or more values ​​for one or more parameters of the first TWT parameter set.

24. The first station of claim 21, wherein the different content includes one or more parameters not included in the first TWT parameter set.

25. The first station of claim 21, wherein the first station is attached to a multi-link device (MLD).

26. The first station of claim 21, wherein the first station comprises an access point (AP).

27. A second station configured for wireless communication, the second station comprising: a memory including processor-executable instructions; and one or more processors configured to execute the processor-executable instructions and cause the second station to: receiving, from a first station, a first element indicating at least a first target wake time (TWT) parameter set; wherein the first element includes information associated with an extension of the first TWT parameter set, the extension including content different from content included in the first TWT parameter set; as well as Communicate based at least in part on the first TWT parameter set and the extension.

28. The second station of claim 27, wherein the information comprises a TWT identifier (TWT ID) linking the extension to the first TWT parameter set.

29. The second station of claim 27, wherein the different content comprises one or more values ​​for one or more parameters of the first TWT parameter set.

30. The second station of claim 27, wherein the different content includes one or more parameters not included in the first TWT parameter set.

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