CN117177362A - Dynamic band selection in multilink operation using TA-SAR information in wireless communications - Google Patents

Abstract

The invention provides a wireless communication method and a communication device, wherein the wireless communication method comprises the following steps: determining resource allocations for one or more multi-link operation (MLO) bands; and allocating at least one of Transmit (TX) power, TX duty cycle, and Modulation Coding Scheme (MCS) for wireless transmissions in one or more MLO bands to result in a specific absorption rate (TA-SAR) that does not exceed an average time of the predefined limit.

Description

Dynamic band selection in multilink operation using TA-SAR information in wireless communications

Technical Field

The present invention relates generally to wireless communications, and more particularly to dynamic band selection in multi-link operation (MLO) with time-averaged specific absorption rate (time averaged specific absorption rate, TA-SAR) information in wireless communications. .

Background

Unless otherwise indicated herein, the approaches described in this section are not prior art to the claims listed below and are not admitted to be prior art by inclusion in this section.

In wireless communications conforming to one or more institute of electrical and electronics engineers (Institute of Electrical and Electronics Engineer, IEEE) standards, such as Wi-Fi (or WiFi) and wireless local area networks (wireless local area network, WLAN), MLO techniques (e.g., at WiFi 7) are used to enable link aggregation across different frequency bands and channels, significantly reducing latency. The parameters of TA-SAR are a measure of the average time of the rate at which a human body absorbs energy per unit mass (mass) when exposed to a Radio Frequency (RF) electromagnetic field (e.g., due to transmissions in WiFi communications). How to properly control the transmission power and traffic flow (traffic flow) in the WiFi7 MLO band according to TA-SAR information to optimize throughput, transmission range and TA-SAR remains a pending problem. Accordingly, a solution for dynamic band selection in MLO using TA-SAR information in wireless communication is needed.

Disclosure of Invention

The following summary is illustrative only and is not intended to be in any way limiting. That is, the following summary is provided to introduce a selection of concepts, benefits, and advantages of the novel and nonobvious techniques described herein. Selected embodiments are further described in the detailed description below. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

It is an object of the present invention to provide schemes, concepts, designs, techniques, methods and apparatuses related to dynamic band selection in MLOs that use TA-SAR information in wireless communications. Accordingly, various approaches presented herein may solve or otherwise mitigate the above-described problems, such as reducing performance overhead.

In one aspect, a method may involve determining resource allocations for one or more MLO frequency bands. The method may also involve wirelessly transmitting at least one of a Transmit (TX) power, a TX duty cycle, and a modulation coding scheme (modulation and coding scheme, MCS) allocated in one or more MLO bands to result in a TA-SAR that does not exceed a predefined limit. Wherein the MCS corresponds to a data transfer rate. The high MCS means an MCS having a high data transmission rate, and the low MCS means an MCS having a low data transmission rate.

The method further comprises the steps of: one or more TX traffic streams are scheduled for at least one of a downlink single user (DL-SU) transmission, a DL multi-user (DL-MU) transmission, and an uplink trigger-based (UL-TB) transmission, or one or more TX traffic streams are scheduled for an uplink single user (UL-SU) transmission. Wherein the arranging comprises performing one or more of: arranging traffic streams of a second MCS at a first TX power limited band and controlling the TX power to be the first TX power to increase a transmission range; arranging traffic streams of the first MCS at a second TX power limited band and controlling the TX power to be the second TX power to increase throughput; arranging traffic streams of the second MCS at the first TX power limited band and controlling the TX duty cycle to increase the transmission range; arranging traffic flows of the first MCS at a second TX power limited band and controlling TX duty cycle to increase throughput; arranging traffic streams of a second MCS at the first TX power limited band and controlling TX power and TX duty cycle to increase a transmission range; and arranging traffic flows of the first MCS at the second TX power limited band and controlling TX power and TX duty cycle to increase throughput; wherein the power limit of the first TX power limit band is higher than the power limit of the second TX power limit band; the data transmission rate corresponding to the first MCS is greater than the data transmission rate corresponding to the second MCS; the first TX power is greater than the second TX power. Alternatively, the arranging comprises performing one or more of: arranging traffic streams of a second MCS at a first TA-SAR limited frequency band and controlling the TX power to be the first TX power to increase a transmission range; arranging traffic flows of the first MCS at a second TA-SAR limit band and controlling the TX power to be a second TX power to increase throughput; arranging traffic streams of a second MCS at the first TA-SAR limited frequency band and controlling a TX duty cycle to increase a transmission range; arranging traffic flows of the first MCS at a second TA-SAR limited frequency band and controlling a TX duty cycle to increase throughput; arranging traffic streams of a second MCS at the first TA-SAR limited frequency band and controlling TX power and TX duty cycle to increase the transmission range; and arranging the first MCS traffic stream and controlling the TX power and the TX duty cycle at the second TA-SAR limit band to increase throughput; wherein the TA-SAR limit of the first TA-SAR limit band is higher than the TA-SAR limit of the second TA-SAR limit band; the data transmission rate corresponding to the first MCS is higher than the data transmission rate corresponding to the second MCS; the first TX power is greater than the second TX power.

Wherein the first TX power limited band may be a high TX power limited band in the subsequent embodiments and the second TX power limited band may be a low TX power limited band in the subsequent embodiments; the first TA-SAR limit band may be a high TA-SAR limit band in the subsequent embodiment, the second TA-SAR limit band may be a low TA-SAR limit band in the subsequent embodiment, the first MCS may be a high MCS in the subsequent embodiment, the second MCS may be a low MCS in the subsequent embodiment, the first TX power may be a high TX power in the subsequent embodiment, and the second TX power may be a low TX power in the subsequent embodiment.

In another aspect, an apparatus that may be implemented in a first MLD includes a transceiver configured to wirelessly communicate and a processor coupled to the transceiver. The processor may determine resource allocations for one or more MLO bands. The processor can also allocate at least one of TX power, TX duty cycle, and MCS for wireless transmissions in one or more MLO bands to produce a TA-SAR that does not exceed a predefined limit.

Notably, although the description provided herein may be in the context of certain radio access technologies, networks, and network topologies (e.g., wi-Fi), the concepts, schemes, and any variations/derivatives presented may be implemented in, or by, other types of radio access technologies, networks, and network topologies, Network and network topology implementations such as, but not limited to, bluetooth, zigBee, fifth generation (5 ^th Generation, 5G)/New Radio (NR), long-Term Evolution (LTE), LTE-Advanced Pro, internet of things (IoT), industrial IoT (IIoT), and narrowband IoT (NB-IoT). Accordingly, the scope of the invention is not limited to the examples described herein.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. It is noted that the drawings are not necessarily to scale, as some components may be shown out of scale in actual practice to clearly illustrate the concepts of the present invention.

FIG. 1 is a schematic diagram of an example network environment in which various solutions and schemes according to the invention may be implemented.

FIG. 2 is a schematic diagram of an example scenario in which various proposed solutions and schemes according to the present invention may be implemented.

Fig. 3 is a schematic diagram of an example scenario under the proposal according to the invention.

Fig. 4 is a schematic diagram of an example scenario under a proposal according to the invention.

Fig. 5 is a schematic diagram of an example scenario under a proposed solution according to the present invention.

Fig. 6 is a schematic diagram of an example scenario under a proposal according to the invention.

Fig. 7 is a schematic diagram of an example scenario under a proposal according to the invention.

Fig. 8 is a schematic diagram of an example scenario under a proposal according to the invention.

Fig. 9 is a block diagram of an example communication system in accordance with an embodiment of the present invention.

Fig. 10 is a flowchart of an example process according to an embodiment of the invention.

Detailed Description

Detailed examples and implementations of the claimed subject matter are disclosed herein. It should be understood, however, that the disclosed examples and implementations are merely illustrative of the claimed subject matter, which may be embodied in various forms. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that this description will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the following description, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

SUMMARY

Embodiments in accordance with the present invention relate to various techniques, methods, schemes and/or solutions related to dynamic band selection in MLOs that use TA-SAR information in wireless communications. According to the invention, a plurality of possible solutions can be implemented singly or in combination. That is, although these possible solutions may be described separately below, two or more of these possible solutions may be implemented in one combination or another, thereby unnecessarily obscuring the presented embodiments and implementations.

FIG. 1 illustrates an example network environment 100 in which various solutions and schemes according to the present invention may be implemented. Fig. 2-10 illustrate example implementations of various proposed schemes in a network environment 100 according to the present invention. With reference to fig. 1-10, the following description of various proposed schemes is provided.

Referring to fig. 1, network environment 100 may involve at least STA 110 in wireless communication with STA 120. Either of STA 110 and STA 120 may be a non-access point (non-AP) STA or alternatively either of STA 110 and STA 120 may act as an Access Point (AP) STA. In some cases, STA 110 and STA 120 may be associated with a basic service set (basic service set, BSS) according to one or more IEEE 802.11 standards (e.g., IEEE 802.11be and standards developed in the future). Each of STA 110 and STA 120 may be configured to communicate with each other using techniques related to dynamic band selection in MLO using TA-SAR information in wireless communications according to various proposed schemes described below. It is noted that while various proposals may be described below, alone or separately, in actual practice some or all of the proposals may be utilized or otherwise jointly implemented. Of course, each of the proposed schemes may be used or otherwise implemented, alone or separately.

Under various proposed schemes according to the present invention, an STA (e.g., STA 110) may measure Transmit (TX) power limits for each frequency band (e.g., 2.4GHz, 5GHz, and/or 6 GHz) that map to or correspond to Specific Absorption Rate (SAR) limits. The STA may also collect or otherwise receive one or more messages from one or more other STAs (e.g., STA 120) to determine a WiFi MLO band resource allocation. The message may include information or otherwise indicate information such as, but not limited to, TA-SAR power limits, TX target power, TX modulation and coding scheme (modulation and coding scheme, MCS) rate, one or more TX performance metrics (e.g., TX data packet error rate (Packet Error rate, TX PER)), one or more Receive (RX) performance metrics (e.g., received signal strength metrics (received signal strength index, RSSI), RX data packet error rate (Packet Error rate, RX PER), and/or signal-to-noise ratio (SNR)). The STA may then dynamically determine and assign TX power and TX duty cycle to the WiFi MLO bands to meet the TA-SAR requirements of the respective bands.

For example, for downlink single-user (DL-SU) transmissions, downlink multi-user (DL-MU) transmissions, and/or uplink trigger-based (UL-TB) transmissions, the AP STA may schedule TX traffic for the MLO band under one or more proposed schemes. For example, the AP STA may schedule low MCS traffic flows at a high TX power limit band and control high TX power to increase transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TX power limit bands and control low TX power to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at the high TX power limit band and control the TX duty cycle to increase the transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TX power limit bands and control TX duty cycles to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at high TX power limit bands and control TX power and TX duty cycle to increase transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TX power limit bands and control TX power and TX duty cycle to improve throughput.

Similarly, for uplink single-user (UL-SU) transmission (transmission), the AP STA may schedule TX traffic for the MLO band in one or more proposed schemes. For example, the AP STA may schedule low MCS traffic flows at a high TX power limit band and control high TX power to increase transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TX power limit bands and control low TX power to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at the high TX power limit band and control the TX duty cycle to increase the transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TX power limit bands and control TX duty cycles to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at the high TX power limit band and control the TX power and TX duty cycle to increase the transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TX power limit bands and control TX power and TX duty cycle to improve throughput.

Further, for DL-SU, DL-MU, and/or UL-TB transmissions, the AP STA may schedule TX traffic streams for the MLO band in one or more proposed schemes. For example, the AP STA may schedule low MCS traffic flows at a high TA-SAR limit band and control high TX power to increase transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TA-SAR limit bands and control low TX power to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at the high TA-SAR limit band and control the TX duty cycle to increase the transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TA-SAR limit bands and control TX duty cycle to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at high TA-SAR limit bands and control TX power and TX duty cycle to increase transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TA-SAR limit bands and control TX power and TX duty cycle to improve throughput.

Also, for UL-SU transmissions, the AP STA may schedule TX traffic streams for the MLO band in one or more proposed schemes. For example, the AP STA may schedule low MCS traffic flows at a high TA-SAR limit band and control high TX power to increase transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TA-SAR limit bands and control low TX power to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at the high TA-SAR limit band and control the TX duty cycle to increase the transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TA-SAR limit bands and control TX duty cycle to improve throughput. Alternatively or additionally, the AP STA may schedule low MCS traffic flows at high TA-SAR limit bands and control TX power and TX duty cycle to increase transmission range. Alternatively or additionally, the AP STA may schedule high MCS traffic flows at low TA-SAR limit bands and control TX power and TX duty cycle to improve throughput.

FIG. 2 illustrates an example scenario 200 in which various proposed solutions and schemes according to the present invention may be implemented. In particular, part (a) of fig. 2 shows a first scenario (scenario 1), part (B) of fig. 2 shows a second scenario (scenario 2), and various aspects presented herein may be implemented. In scenario 1, the condition may be that WiFi has the same TA-SAR limit and different TX power limits at different MLO bands. For example, the 2.4GHz/5GHz band (e.g., band 0) and the 6GHz band (e.g., band 1) may have the same TA-SAR limits (i.e., 1.6 watts (Watt, W) per kilogram (kg)), as well as different TX power limits (e.g., 20dBm for the 2.4GHz/5GHz band and 18dBm for the 6GHz band). In scenario 2, the condition may be that WiFi has different TA-SAR limits at different MLO bands. For example, the 2.4GHz/5GHz band and the 6GHz band may have different TA-SAR limits (e.g., 1.6W/kg for the 2.4GHz/5GHz band, 1.3W/kg for the 6GHz band) and different TX power limits (e.g., 20dBm for the 2.4GHz/5GHz band, 18dBm for the 6GHz band).

Fig. 3 shows an example scenario 300 under a proposed solution according to the present invention. Scene 300 is the first example (scene 1-1) under the condition of scene 1. Under the proposed scheme, the purpose or goal to be achieved in scenario 300 is to increase transmission range and throughput to meet the TA-SAR requirements. Referring to fig. 3, the proposed scheme may involve arranging low MCS traffic flows at a high TX power limited band (e.g., 2.4GHz or 5GHz band) and controlling high TX power to increase transmission range. Furthermore, the proposed scheme may involve arranging high MCS traffic flows at a low TX power limited band (e.g., 6GHz band) and controlling low TX power to improve throughput. For example, as shown in fig. 3, low MCS traffic in the 2.4GHz/5GHz band may be transmitted with its high TX power controlled and limited at 20dBm/22dBm, thereby reducing TA-SAR to 0.9W/kg while increasing transmission range. In addition, high MCS traffic in the 6GHz band can be transmitted with its low TX power controlled and limited at 18dBm/16dBm, reducing TA-SAR to 0.7W/kg while improving throughput. The total TA-SAR is 1.6W/kg (=0.9W/kg+0.7W/kg), meets or otherwise passes (e.g., does not exceed (may also be referred to as being no greater than)) the predefined limit of 1.6W/kg based on TA-SAR specifications.

Fig. 4 shows an example scenario 400 under a proposed solution according to the present invention. Scenario 400 is a second example (scenario 1-2) under scenario 1 conditions. Under the proposed scheme, the purpose or goal to be achieved in scenario 400 is to increase transmission range and throughput to meet the TA-SAR requirements. Referring to fig. 4, the proposed scheme may involve arranging low MCS traffic streams at a high TX power limited band (e.g., 2.4GHz or 5GHz band) and controlling TX duty cycles to increase transmission range. Furthermore, the proposed scheme may involve arranging high MCS traffic flows at a low TX power limited band (e.g., 6GHz band) and controlling TX duty cycle to improve throughput. For example, as shown in fig. 4, a low MCS traffic stream in a 2.4GHz/5GHz band may be transmitted by using a duty cycle of high TX power which is controlled and limited to 30% duty cycle, thereby reducing TA-SAR to 0.8W/kg while increasing a transmission range. In addition, high MCS traffic in the 6GHz band may be transmitted by using a duty cycle of low TX power controlled and limited at 70% duty cycle, thereby reducing TA-SAR to 0.8W/kg while improving throughput. The total TA-SAR is 1.6W/kg (=0.8W/kg+0.8W/kg), conforms to or otherwise passes (e.g., is not greater than) the predefined limit of 1.6W/kg specified based on TA-SAR.

Fig. 5 shows an example scenario 500 under a proposed solution according to the present invention. Scenario 500 is a third example under scenario 1 condition (scenarios 1-3). Under the proposed scheme, the purpose or goal to be achieved in scenario 500 is to increase transmission range and throughput to meet the TA-SAR requirements. Referring to fig. 5, the proposed scheme may involve arranging low MCS traffic flows at a high TX power limited band (e.g., 2.4GHz or 5GHz band) and controlling TX power and TX duty cycle to increase transmission range. Furthermore, the proposed scheme may involve arranging high MCS traffic flows at a low TX power limited band (e.g., 6GHz band) and controlling TX power and TX duty cycle to improve throughput. For example, as shown in fig. 5, low MCS traffic in the 2.4GHz/5GHz band may be transmitted with high TX power and duty cycle controlled and limited to 23dBm/22dBm and 30% duty cycle/40% duty cycle, respectively, thereby reducing TA-SAR to 0.8W/kg while increasing transmission range. In addition, high MCS traffic in the 6GHz band may be transmitted at low TX power and duty cycle which are controlled and limited to 16dBm/15dBm and 70% duty cycle/60% duty cycle, respectively, thereby reducing TA-SAR to 0.8W/kg while improving throughput. The total TA-SAR is 1.6W/kg (=0.8W/kg+0.8W/kg), conforms to or otherwise passes (e.g., is not greater than) the predefined limit of 1.6W/kg specified based on TA-SAR.

Fig. 6 shows an example scenario 600 under a proposed solution according to the present invention. Scenario 600 is the first example under scenario 2 conditions (scenario 2-1). Under the proposed scheme, the purpose or goal to be achieved in scenario 600 is to increase transmission range and throughput to meet the TA-SAR requirements. Referring to fig. 6, the proposed scheme may involve arranging low MCS traffic flows at a high TA-SAR limit band (e.g., 2.4GHz or 5GHz band) and controlling high TX power to increase transmission range. Furthermore, the proposed scheme may involve arranging high MCS traffic flows at a low TA-SAR limited frequency band (e.g., 6GHz band) and controlling low TX power to improve throughput. For example, as shown in fig. 6, low MCS traffic in the 2.4GHz/5GHz band may be transmitted with its high TX power controlled and limited to 20dBm/22dBm, thereby reducing TA-SAR to 0.9W/kg while increasing transmission range. In addition, high MCS traffic in the 6GHz band can be transmitted with its low TX power controlled and limited to 18dBm/16dBm, reducing TA-SAR to 0.7W/kg while improving throughput. The total TA-SAR is 1.6W/kg (=0.9W/kg+0.7W/kg), conforms to or otherwise passes (e.g., is not greater than) the predefined limit of 1.6W/kg specified based on TA-SAR.

Fig. 7 shows an example scenario 700 under a proposed solution according to the present invention. Scenario 700 is a second example (scenario 2-2) under scenario 2 conditions. Under the proposed scheme, the purpose or goal to be achieved in scenario 700 is to increase transmission range and throughput to meet the TA-SAR requirements. Referring to fig. 7, the proposed scheme may involve arranging low MCS traffic flows at a high TA-SAR limited frequency band (e.g., 2.4GHz or 5GHz frequency band) and controlling TX duty cycle to increase transmission range. Furthermore, the proposed scheme may involve arranging high MCS traffic flows at a low TA-SAR limited frequency band (e.g., 6GHz band) and controlling TX duty cycle to improve throughput. For example, as shown in fig. 7, a low MCS traffic stream in a 2.4GHz/5GHz band is transmitted at a duty cycle of high TX power, which is controlled and limited to 30% duty cycle, thereby reducing TA-SAR to 0.8W/kg while increasing a transmission range. In addition, high MCS traffic in the 6GHz band may be transmitted at a duty cycle of low TX power that is controlled and limited to 70% duty cycle, thereby reducing TA-SAR to 0.8W/kg while improving throughput. The total TA-SAR is 1.6W/kg (=0.8W/kg+0.8W/kg), conforms to or otherwise passes (e.g., is not greater than) the predefined limit of 1.6W/kg specified based on TA-SAR.

Fig. 8 shows an example scenario 800 under a proposed solution according to the present invention. Scenario 800 is a third example (scenario 2-3) under scenario 2 conditions. Under the proposed scheme, the purpose or goal to be achieved in scenario 800 is to increase transmission range and throughput to meet the TA-SAR requirements. Referring to fig. 8, the proposed scheme may involve arranging low MCS traffic flows at a high TA-SAR limit band (e.g., 2.4GHz or 5GHz band) and controlling TX power and TX duty cycle to increase transmission range. Furthermore, the proposed scheme may involve arranging high MCS traffic flows at a low TA-SAR limited frequency band (e.g., 6GHz band) and controlling TX power and TX duty cycle to improve throughput. For example, as shown in fig. 8, low MCS traffic in the 2.4GHz/5GHz band may be transmitted at high TX power and duty cycle which are controlled and limited to 23dBm/22dBm and 30% duty cycle/40% duty cycle, respectively, thereby reducing TA-SAR to 0.8W/kg while increasing transmission range. In addition, high MCS traffic in the 6GHz band may be transmitted at low TX power and duty cycle which are controlled and limited to 16dBm/15dBm and 70% duty cycle/60% duty cycle, respectively, thereby reducing TA-SAR to 0.8W/kg while improving throughput. The total TA-SAR is 1.6W/kg (=0.8W/kg+0.8W/kg), conforms to or otherwise passes (e.g., is not greater than) the predefined limit of 1.6W/kg specified based on TA-SAR.

In view of the above, under various schemes proposed according to the present invention, different WiFi TX powers, duty cycles, and MCSs may be allocated for MLO band selection based on TA-SAR measurements for AP DL transmissions and STA UL. Advantageously, embodiments of one or more of the proposed schemes may improve performance in terms of transmission range, throughput, and low TA-SAR compared to existing/conventional allocation methods. This is because the conventional approach does not schedule TX traffic flows based on TA-SAR TX power constraints. Furthermore, conventional approaches do not schedule TX traffic flows based on TA-SAR limits or power limiting conditions, and thus conventional approaches do not optimize performance or meet TA-SAR specifications. In contrast, the proposed solution according to the present invention may arrange the TX traffic flows based on TA-SAR limits and/or TX power limits, thereby optimizing performance while meeting TA-SAR requirements/regulations.

Illustrative embodiments

Fig. 9 illustrates an example system 900 having at least example apparatus 910 and example apparatus 920 according to an embodiment of the invention. Each of the apparatus 910 and the apparatus 920 may perform various functions to implement the schemes, techniques, procedures, and methods described herein in connection with dynamic band selection in MLOs that use TA-SAR information in wireless communications, including the various schemes, concepts, schemes, systems, and methods described above with respect to the various proposed designs, and the procedures described below. For example, apparatus 910 may be implemented in STA 110 and apparatus 920 may be implemented in STA 120, or vice versa.

Each of apparatus 910 and apparatus 920 may be part of an electronic device, which may be a non-AP STA or an AP STA, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. When implemented in a STA, each of apparatus 910 and apparatus 920 may be implemented in a smart phone, a smart watch, a personal digital assistant, a digital camera, or a computing device such as a tablet, laptop, or notebook. Each of apparatus 910 and apparatus 920 may also be part of a machine type device, which may be an internet of things device, such as a stationary or fixed device, a home device, a wired communication device, or a computing device. For example, each of the devices 910 and 920 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. When implemented in or as a network device, apparatus 910 and/or apparatus 920 may be implemented in a network node (e.g., an AP in a WLAN).

In some implementations, each of the apparatus 910 and the apparatus 920 may be implemented in the form of one or more integrated-circuit (IC) chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction-set-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors. In the various aspects described above, each of the apparatus 910 and the apparatus 920 may be implemented in or as a STA or an AP. Each of the apparatus 910 and the apparatus 920 may include at least some of those components shown in fig. 9. Such as processor 912 and processor 922 in fig. 9, respectively. Each of apparatus 910 and apparatus 920 may also include one or more other components (e.g., an internal power source, a display device, and/or a user interface device) not relevant to the proposed solution of the present invention, and thus, for simplicity, such component(s) of apparatus 910 and apparatus 920 are not shown in fig. 9, nor described below.

In an aspect, each of processor 912 and processor 922 may be implemented in the form of one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, even though the singular terms "a processor" and "a processor" are used herein to refer to the processor 912 and the processor 922, in accordance with the present invention, each of the processor 912 and the processor 922 may include multiple processors in some embodiments, and in other embodiments, each of the processor 912 and the processor 922 may include a single processor. In another aspect, each of the processor 912 and the processor 922 may be implemented in hardware (and optionally firmware) with electronic components including, for example, but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and/or one or more varactors, configured and arranged to achieve a particular objective in accordance with the present invention. In other words, in at least some embodiments, each of processor 912 and processor 922 is a special purpose machine specifically designed, arranged, and configured to perform specific tasks, including tasks related to dynamic band selection in MLOs that use TA-SAR information in wireless communications according to various embodiments of the present invention.

In some implementations, the apparatus 910 may further include a transceiver 916 coupled to the processor 912. The transceiver 916 may include a transmitter capable of wirelessly transmitting data and a receiver capable of wirelessly receiving data. In some implementations, the apparatus 920 may further include a transceiver 926 coupled to the processor 922. The transceiver 926 may include a transmitter capable of wirelessly transmitting data and a receiver capable of wirelessly receiving data. Notably, although transceiver 916 and transceiver 926 are shown external to and separate from processor 912 and processor 922, respectively, in some embodiments transceiver 916 may be an integral part of processor 912 of a system on chip (SoC) and/or transceiver 926 may be an integral part of processor 922 of a SoC.

In some implementations, the apparatus 910 may also include a memory 914 coupled to the processor 912 and capable of being accessed by the processor 912 and capable of storing data therein. In some implementations, the apparatus 920 may also include a memory 924 coupled to the processor 922 and accessible to the processor 922 and capable of storing data therein. Each of the memory 914 and the memory 924 may include a type of random-access memory (RAM), such as Dynamic RAM (DRAM), static RAM (SRAM), thyristor RAM (T-RAM), and/or zero-capacitance RAM (Z-RAM). Alternatively or additionally, each of memory 914 and memory 924 can include a type of read-only memory (ROM), such as mask ROM, programmable ROM (PROM), erasable programmable ROM (erasable programmable ROM, EPROM), and/or electrically erasable programmable ROM (erasable programmable ROM, EEPROM). Alternatively or additionally, each of the memory 914 and the memory 924 may include a type of non-volatile random-access memory (NVRAM), such as flash memory (flash memory), solid-state memory (solid-state memory), ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and/or phase-change memory (phase-change memory).

Each of the apparatus 910 and the apparatus 920 may be communication entities capable of communicating with each other using various proposed schemes according to the present invention. For illustrative purposes, and not limitation, a description of the capabilities of device 910 as STA 110 and device 920 as STA 120 is provided below. It is noted that while a detailed description of the capabilities, functions and/or technical features of the apparatus 920 is provided below, it is equally applicable to the apparatus 910, and a detailed description thereof is not provided for the sake of brevity. It is also noted that while the example embodiments described below are provided in the context of a WLAN, they may be implemented in other types of networks as well.

Under various proposed schemes related to dynamic band selection in MLO using TA-SAR information in wireless communication according to the present invention, apparatus 910 is implemented in STA 110 or as STA 110 in network environment 100, apparatus 920 is implemented in STA 120 or as STA 120, and processor 912 of apparatus 910 may determine resource allocation for one or more MLO bands. Further, the processor 912 can allocate at least one of TX power, TX duty cycle, and MCS at the time of wireless transmission in one or more MLO bands to result in a TA-SAR that is no greater than a predefined limit. Wherein determining the resource allocation for the one or more MLO bands may comprise: it is determined on which frequency band the TX data packet to be transmitted is transmitted. In one embodiment, the determination may be made based on the MCS of the TX data packet to be transmitted.

In some implementations, the processor 912 may additionally perform certain operations prior to the determination. For example, the processor 912 may measure a TX power limit for each of one or more MLO bands mapped to a respective SAR limit. Further, processor 912 may receive one or more messages from one or more STAs (e.g., device 920). In such a case, in the determining, the processor 912 may determine based on the results of the measurement and one or more messages. In some embodiments, the one or more message indication information may include at least one of a TA-SAR power limit, a TX target power, a TX MCS, one or more TX performance metrics, one or more RX performance metrics, wherein the one or more RX performance metrics include one or more of RSSI, RX PER, and SNR.

In some implementations, in the allocation, the processor 912 may allocate at least one of TX power, TX duty cycle, and MCS based on TA-SAR measurements for DL or UL transmissions.

In some embodiments, processor 912 may also schedule one or more TX traffic streams for at least one of a DL-SU transmission, a DL-MU transmission, and a UL-TB transmission, either before or after the determination. In some implementations, when arranged, the processor 912 may perform one or more of the following: (1) Arranging low MCS traffic flows at the high TX power limited band and controlling the high TX power to increase the transmission range; (2) The high MCS traffic stream is scheduled at the low TX power limited band and the low TX power is controlled to improve throughput. (3) Arranging low MCS traffic streams at a high TX power limited band and controlling TX duty cycle to increase transmission range; (4) Arranging high MCS service flow at low TX power limit frequency band and controlling TX duty cycle to improve throughput; (5) Arranging low MCS traffic streams at a high TX power limited band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TX power limited band and the TX power and TX duty cycle are controlled to improve throughput. Alternatively, in an arrangement, the processor 912 may perform one or more of the following: (1) Arranging low MCS traffic at a high TA-SAR limit band and controlling high TX power to increase transmission range; (2) The high MCS traffic stream is scheduled at the low TA-SAR limit band and the low TX power is controlled to improve throughput. (3) Arranging low MCS traffic streams and controlling TX duty cycles at high TA-SAR limit bands to increase transmission range; (4) Arranging high MCS traffic at low TA-SAR limit bands and controlling TX duty cycle to increase throughput; (5) Arranging low MCS traffic streams at a high TA-SAR limit band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TA-SAR limit band and the TX power and TX duty cycle are controlled to improve throughput.

In some embodiments, processor 912 can also schedule one or more TX traffic streams for a UL-SU transmission before or after the determination. In some implementations, when arranged, the processor 912 may perform one or more of the following: (1) Arranging low MCS traffic flows at the high TX power limited band and controlling the high TX power to increase the transmission range; (2) Scheduling high MCS traffic flows at low TX power limited bands and controlling low TX power to improve throughput; (3) Arranging low MCS traffic streams at a high TX power limited band and controlling TX duty cycle to increase transmission range; (4) Scheduling high MCS traffic flows at low TX power limited bands and controlling TX duty cycle to improve throughput; (5) Arranging low MCS traffic streams at a high TX power limited band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TX power limited band and the TX power and TX duty cycle are controlled to improve throughput. Alternatively, the processor 912 may perform one or more of the following at the time of scheduling: (1) Arranging low MCS traffic at a high TA-SAR limit band and controlling high TX power to increase transmission range; (2) Scheduling high MCS traffic at low TA-SAR limit bands and controlling low TX power to improve throughput; (3) Arranging low MCS traffic at a high TA-SAR limit band and controlling TX duty cycle to increase transmission range; (4) Arranging high MCS traffic at low TA-SAR limit bands and controlling TX duty cycle to increase throughput; (5) Arranging low MCS traffic streams at a high TA-SAR limit band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TA-SAR limit band and the TX power and TX duty cycle are controlled to improve throughput.

Illustrative procedure

Fig. 10 illustrates an example process 1000 according to an embodiment of the invention. Process 1000 may represent aspects of implementing the various proposed designs, concepts, schemes, systems and methods described above. More particularly, process 1000 may represent aspects of the proposed concepts and schemes related to dynamic band selection in MLOs that use TA-SAR information in wireless communications, in accordance with the present invention. Process 1000 may include one or more operations, actions, or functions as illustrated by one or more of blocks 1010 and 1020. While the various blocks/sub-blocks of process 1000 are shown as discrete blocks, additional blocks, combinations of blocks, or elimination may be split into fewer blocks, depending on the desired implementation. Further, the blocks/sub-blocks of process 1000 may be performed in the order shown in fig. 10, or in a different order. Further, one or more of the blocks/sub-blocks of process 1000 may be performed repeatedly or iteratively. Process 1000 may be implemented by or in apparatus 910 and apparatus 920 and any variations thereof. For purposes of illustration only and not limitation, process 1000 is described in the context of apparatus 910 being implemented in STA110 (as a non-AP STA (or AP STA) in a wireless network, e.g., WLAN network environment 100, based on one or more IEEE 902.11 standards) or as STA110 and apparatus 920 being implemented in STA120 (as an AP STA (or non-AP STA)) or as STA 120. Process 1000 may begin at block 1010.

At 1010, process 1000 may involve processor 912 of apparatus 910 determining resource allocation for one or more MLO bands. Process 1000 may proceed from 1010 to 1020.

At 1020, process 1000 may involve processor 912 allocating at least one of Transmit (TX) power, TX duty cycle, and MCS for wireless transmissions in one or more MLO bands to result in a TA-SAR that does not exceed a predefined limit.

In some implementations, prior to determining, process 1000 may additionally involve processor 912 performing certain operations. For example, process 1000 may involve processor 912 measuring a TX power limit for each MLO in one or more MLO bands that maps to a respective SAR limit. Further, process 1000 may involve processor 912 receiving one or more messages from one or more STAs (e.g., device 920). In such a case, in determining, process 1000 may involve processor 912 determining based on the results of the measurements and one or more messages. In some implementations, the information indicated by the one or more messages may include at least one of a TA-SAR power limit, a TX target power, a TX MCS, one or more TX performance indicators, one or more RX performance indicators including one or more of RSSI, RX PER, and SNR.

In some implementations, at the time of allocation, process 1000 may involve processor 912 allocating at least one of TX power, TX duty cycle, and MCS based on TA-SAR measurements for DL or UL transmissions.

In some embodiments, process 1000 may additionally involve processor 912 scheduling one or more TX traffic streams for at least one of a DL-SU transmission, a DL-MU transmission, and a UL-TB transmission before or after the determination. In some implementations, when arranged, process 1000 may involve processor 912 performing one or more of: (1) Arranging low MCS traffic flows at high TX power limited bands and controlling high TX power to increase transmission range; (2) Scheduling high MCS traffic flows at low TX power limited bands and controlling low TX power to improve throughput; (3) Arranging low MCS traffic streams at a high TX power limited band and controlling TX duty cycle to increase transmission range; (4) Scheduling high MCS traffic flows at low TX power limited bands and controlling TX duty cycle to improve throughput; (5) Arranging low MCS traffic streams at a high TX power limited band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TX power limited band and the TX power and TX duty cycle are controlled to improve throughput. Alternatively, when arranged, process 1000 may involve processor 912 performing one or more of the following: (1) Arranging low MCS traffic at a high TA-SAR limit band and controlling high TX power to increase transmission range; (2) Scheduling high MCS traffic at low TA-SAR limit bands and controlling low TX power to improve throughput; (3) Arranging low MCS traffic at a high TA-SAR limit band and controlling TX duty cycle to increase transmission range; (4) Arranging high MCS traffic at low TA-SAR limit bands and controlling TX duty cycle to increase throughput; (5) Arranging low MCS traffic streams at a high TA-SAR limit band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TA-SAR limit band and the TX power and TX duty cycle are controlled to improve throughput.

In some embodiments, process 1000 may additionally involve processor 912 scheduling one or more TX traffic streams for a UL-SU transmission before or after the determination. In some implementations, when arranged, process 1000 may involve processor 912 performing one or more of: (1) Arranging low MCS traffic flows at high TX power limited bands and controlling high TX power to increase transmission range; (2) Scheduling high MCS traffic flows at low TX power limited bands and controlling low TX power to improve throughput; (3) Arranging low MCS traffic streams at a high TX power limited band and controlling TX duty cycle to increase transmission range; (4) Scheduling high MCS traffic flows at low TX power limited bands and controlling TX duty cycle to improve throughput; (5) Arranging low MCS traffic streams at a high TX power limited band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TX power limited band and the TX power and TX duty cycle are controlled to improve throughput. Alternatively, when arranged, process 1000 may involve processor 912 performing one or more of the following: (1) Arranging low MCS traffic flows at high TA-SAR limit bands and controlling high TX power to increase transmission range; (2) Scheduling high MCS traffic at low TA-SAR limit bands and controlling low TX power to improve throughput; (3) Arranging low MCS traffic streams and controlling TX duty cycles at high TA-SAR limit bands to increase transmission range; (4) Arranging high MCS traffic at low TA-SAR limit bands and controlling TX duty cycle to increase throughput; (5) Arranging low MCS traffic streams at a high TA-SAR limit band and controlling TX power and TX duty cycle to increase transmission range; (6) The high MCS traffic stream is scheduled at the low TA-SAR limit band and the TX power and TX duty cycle are controlled to improve throughput.

Additional description

The subject matter described herein sometimes illustrates different components contained within or connected with other different components. It is to be understood that such depicted architectures are merely examples, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Thus, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected," or "operably coupled," to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably coupled," to each other to achieve the desired functionality. Specific examples of operably coupled include, but are not limited to, physically mateable and/or physically interacting components and/or wirelessly interactable and/or wirelessly interacting components and/or logically interacting and/or logically interactable components.

Furthermore, with respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural depending upon the context and/or application. For clarity, various singular/plural permutations may be explicitly set forth herein.

Furthermore, it will be understood by those within the art that terms commonly used herein, and especially those in the appended claims, such as the subject of the appended claims, are generally intended as "open" terms, such as the term "including" should be interpreted as "including but not limited to," the term "comprising" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," and so forth. It will be further understood by those with skill in the art that if a specific number of an introduced claim element is intended, such intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim elements. However, the use of such phrases should not be construed to imply that the introduction of a claim element by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim element to only one such element, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an", e.g. "a" and/or "an" are to be interpreted to mean "at least one" or "one or more", and the same is also suitable for use with respect to the introductory phrases such as "one or more" or "at least one". Furthermore, even if a specific number of an introduced claim element is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number, e.g., the bare recitation of "two elements," without other modifiers, meaning at least two elements, or two or more elements. Further, where a structure similar to "at least one of a, B, and C, etc." is used, for its purpose, such a construction is typical, and one skilled in the art would understand the convention, for example "the system has at least one of a, B, and C" would include, but not be limited to, the system having a alone a, B alone, C, A alone and B together, a and C together, B and C together, and/or A, B and C together, etc. Where a structure similar to "at least one of a, B, or C, etc." is used, such a construction is typical for its purpose, one having skill in the art would understand the convention, for example "a system having at least one of a, B, or C" would include, but not be limited to, a system having a alone, B alone, C, A and B together, a and C together, B and C together, and/or A, B and C together, etc. Those skilled in the art will further appreciate that virtually any disjunctive word and/or phrase presenting two or more alternatives, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, any of the terms, or both terms. For example, the phrase "a or B" will be understood to include the possibilities of "a" or "B" or "a and B".

From the foregoing, it will be appreciated that various embodiments of the application have been described herein for purposes of illustration, and that various modifications may be made without deviating from the scope and spirit of the application. Accordingly, the various embodiments disclosed herein are not meant to be limiting, with the true scope and spirit being determined by the following claims.

Claims (20)

1. A method of wireless communication, comprising:

determining resource allocations for one or more multi-link operation (MLO) bands; and

at least one of a Transmit (TX) power, a TX duty cycle, and a Modulation and Coding Scheme (MCS) of a wireless transmission in one or more MLO bands is allocated to result in a specific absorption rate (TA-SAR) that does not exceed an average time of a predefined limit.

2. The method of claim 1, further comprising, prior to the determining:

measuring a TX power limit of each of the one or more MLO bands mapped to a respective Specific Absorption Rate (SAR) limit; and

one or more messages are received from one or more Stations (STAs),

wherein the determining comprises: determining based on the results of the measurement and the one or more messages;

and/or, the assigning comprises: based on the results of the measurements and the one or more messages.

3. The method of claim 2, wherein the one or more message indications comprise information of at least one of a TA-SAR power limit, a TX target power, a TX Modulation and Coding Scheme (MCS) rate, one or more TX performance metrics, and one or more Receive (RX) performance metrics, wherein the one or more RX performance metrics comprise one or more of a received signal strength metric (RSSI), an RX packet error rate (RX PER), and a signal-to-noise ratio (SNR).

4. The method of claim 1, wherein the allocating comprises allocating at least one of TX power, TX duty cycle, and MCS based on TA-SAR measurements for Downlink (DL) transmissions or Uplink (UL) transmissions.

5. The method as recited in claim 1, further comprising:

one or more TX traffic streams are scheduled for at least one of a downlink single user (DL-SU) transmission, a DL multi-user (DL-MU) transmission, and an uplink trigger-based (UL-TB) transmission.

6. The method of claim 5, wherein the arranging comprises performing one or more of:

arranging traffic streams of the second MCS at the first TX power limited band and controlling the first TX power to increase a transmission range;

Arranging traffic streams of the first MCS at a second TX power limited band and controlling the second TX power to improve throughput;

arranging traffic streams of the second MCS at the first TX power limited band and controlling the TX duty cycle to increase the transmission range;

arranging traffic flows of the first MCS at a second TX power limited band and controlling TX duty cycle to increase throughput;

arranging traffic streams of a second MCS at the first TX power limited band and controlling TX power and TX duty cycle to increase a transmission range; and

arranging traffic flows of the first MCS at a second TX power limited band and controlling TX power and TX duty cycle to improve throughput;

wherein the power limit of the first TX power limit band is higher than the power limit of the second TX power limit band; the data transmission rate corresponding to the first MCS is greater than the data transmission rate of the second MCS; the first TX power is greater than the second TX power.

7. The method of claim 5, wherein the arranging comprises performing one or more of:

arranging traffic streams of a second MCS at a first TA-SAR limited frequency band and controlling a first TX power to increase a transmission range;

arranging traffic flows of the first MCS at a second TA-SAR limited frequency band and controlling a second TX power to increase throughput;

Arranging traffic streams of a second MCS at the first TA-SAR limited frequency band and controlling a TX duty cycle to increase a transmission range;

arranging traffic flows of the first MCS at a second TA-SAR limited frequency band and controlling a TX duty cycle to increase throughput;

arranging traffic streams of a second MCS at the first TA-SAR limited frequency band and controlling TX power and TX duty cycle to increase the transmission range; and

arranging traffic flows of the first MCS at a second TA-SAR limited frequency band and controlling TX power and TX duty cycle to increase throughput;

wherein the TA-SAR limit of the first TA-SAR limit band is higher than the TA-SAR limit of the second TA-SAR limit band; the data transmission rate corresponding to the first MCS is greater than the data transmission rate corresponding to the second MCS; the first TX power is greater than the second TX power.

8. The method as recited in claim 1, further comprising:

one or more TX traffic streams are scheduled for uplink single-user (UL-SU) transmission.

9. The method of claim 8, wherein the arranging comprises performing one or more of:

arranging traffic streams of the second MCS at the first TX power limited band and controlling the first TX power to increase a transmission range;

Arranging traffic streams of the first MCS at a second TX power limited band and controlling the second TX power to improve throughput;

arranging traffic streams of the second MCS at the first TX power limited band and controlling the TX duty cycle to increase the transmission range;

arranging traffic flows of the first MCS at a second TX power limited band and controlling TX duty cycle to increase throughput;

arranging traffic streams of a second MCS at the first TX power limited band and controlling TX power and TX duty cycle to increase a transmission range; and

arranging traffic flows of the first MCS at a second TX power limited band and controlling TX power and TX duty cycle to improve throughput;

wherein the power limit of the first TX power limit band is higher than the power limit of the second TX power limit band; the data transmission rate corresponding to the first MCS is greater than the data transmission rate corresponding to the second MCS; the first TX power is greater than the second TX power.

10. The method of claim 8, wherein the arranging comprises performing one or more of:

arranging a second MCS traffic stream at the first TA-SAR limited frequency band and controlling the first TX power to increase the transmission range;

arranging the first MCS traffic stream at a second TA-SAR limited frequency band and controlling a second TX power to increase throughput;

Arranging a second MCS service stream at the first TA-SAR limit band and controlling the TX duty cycle to increase the transmission range;

arranging the first MCS service stream at the second TA-SAR limit band and controlling the TX duty cycle to improve throughput;

arranging a second MCS traffic stream at the first TA-SAR limited frequency band and controlling TX power and TX duty cycle to increase the transmission range; and

arranging the first MCS traffic stream at a second TA-SAR limited frequency band and controlling TX power and TX duty cycle to increase throughput;

wherein the TA-SAR limit of the first TA-SAR limit band is higher than the TA-SAR limit of the second TA-SAR limit band; the data transmission rate corresponding to the first MCS is higher than the data transmission rate corresponding to the second MCS; the first TX power is higher than the second TX power.

11. A communication device, comprising:

a transceiver configured to communicate wirelessly; and

a processor coupled to the transceiver and configured to perform operations comprising:

determining resource allocations for one or more multi-link operation (MLO) bands; and

at least one of a Transmit (TX) power, a TX duty cycle, and a Modulation and Coding Scheme (MCS) of a wireless transmission in one or more MLO bands is allocated to result in a specific absorption rate (TA-SAR) that does not exceed an average time of a predefined limit.

12. The apparatus of claim 11, wherein prior to the determining, the processor is further configured to perform operations comprising:

measuring a TX power limit of each of the one or more MLO bands mapped to a respective Specific Absorption Rate (SAR) limit; and

one or more messages are received from one or more Stations (STAs),

wherein the determining comprises: based on the results of the measurements and the one or more messages.

13. The apparatus of claim 12, wherein the one or more message indications comprise information of at least one of a TA-SAR power limit, a TX target power, a TX Modulation and Coding Scheme (MCS) rate, one or more TX performance metrics, one or more Receive (RX) performance metrics, wherein the one or more Receive (RX) performance metrics comprise one or more of a received signal strength metric (RSSI), an RX packet error rate (RX PER), and a signal-to-noise ratio (SNR).

14. The apparatus of claim 11, wherein the allocating comprises allocating at least one of the TX power, the TX duty cycle, and the MCS based on TA-SAR measurements for Downlink (DL) transmissions or Uplink (UL) transmissions.

15. The apparatus of claim 11, wherein the processor is further configured to perform operations comprising:

one or more TX traffic streams are scheduled for at least one of a downlink single user (DL-SU) transmission, a DL multi-user (DL-MU) transmission, and an uplink trigger-based (UL-TB) transmission.

16. The apparatus of claim 15, wherein the arrangement comprises performing one or more of:

arranging low MCS traffic flows at high TX power limited bands and controlling high TX power to increase transmission range;

scheduling high MCS traffic flows at low TX power limited bands and controlling low TX power to improve throughput;

arranging low MCS traffic streams at a high TX power limited band and controlling TX duty cycle to increase transmission range;

scheduling high MCS traffic flows at low TX power limited bands and controlling TX duty cycle to improve throughput;

arranging low MCS traffic streams at a high TX power limited band and controlling TX power and TX duty cycle to increase transmission range; and

the high MCS traffic stream is scheduled at the low TX power limited band and the TX power and TX duty cycle are controlled to improve throughput.

17. The apparatus of claim 15, wherein the arrangement comprises performing one or more of:

Arranging low MCS traffic at a high TA-SAR limit band and controlling high TX power to increase transmission range;

scheduling high MCS traffic at low TA-SAR limit bands and controlling low TX power to improve throughput;

arranging low MCS traffic at a high TA-SAR limit band and controlling TX duty cycle to increase transmission range;

arranging high MCS traffic flows at low TA-SAR limit bands and controlling the TX duty cycle to increase throughput;

arranging low MCS traffic streams at a high TA-SAR limit band and controlling the TX power and the TX duty cycle to increase the transmission range; and

the high MCS traffic stream is scheduled at the low TA-SAR limit band and the TX power and TX duty cycle are controlled to improve throughput.

18. The device of claim 11, wherein the processor is further configured to perform operations comprising:

one or more TX traffic streams are scheduled for uplink single-user (UL-SU) transmission.

19. The apparatus of claim 18, wherein the arrangement comprises performing one or more of:

arranging low MCS traffic flows at high TX power limited bands and controlling high TX power to increase transmission range;

scheduling high MCS traffic flows at low TX power limited bands and controlling low TX power to improve throughput;

Arranging low MCS traffic streams at a high TX power limited band and controlling TX duty cycle to increase transmission range;

scheduling high MCS traffic flows at low TX power limited bands and controlling TX duty cycle to improve throughput;

arranging low MCS traffic streams at a high TX power limited band and controlling TX power and TX duty cycle to increase transmission range; and

the high MCS traffic stream is scheduled at the low TX power limited band and the TX power and TX duty cycle are controlled to improve throughput.

20. The apparatus of claim 18, wherein the arrangement comprises performing one or more of:

arranging low MCS traffic at a high TA-SAR limit band and controlling high TX power to increase transmission range;

scheduling high MCS traffic at low TA-SAR limit bands and controlling low TX power to improve throughput;

arranging low MCS traffic at a high TA-SAR limit band and controlling TX duty cycle to increase transmission range;

arranging high MCS traffic at low TA-SAR limit bands and controlling TX duty cycle to increase throughput;

arranging low MCS traffic streams at a high TA-SAR limit band and controlling TX power and TX duty cycle to increase transmission range; and

the high MCS traffic stream is scheduled at the low TA-SAR limit band and the TX power and TX duty cycle are controlled to improve throughput.