Coordinated beamforming with partial bandwidth or with ofdma and UEQM in wireless communications
The implementation of CoBF with partial bandwidth and UEQM in wireless communications addresses the lack of specifications in existing technologies, enhancing throughput and simplifying testing through LDPC-based signaling.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MEDIATEK INC
- Filing Date
- 2025-11-06
- Publication Date
- 2026-05-15
AI Technical Summary
Existing wireless communication technologies lack specifications for coordinated beamforming (CoBF) with partial bandwidth or orthogonal frequency-division multiple-access (OFDMA) and unequal modulation (UEQM), which are essential for next-generation Wi-Fi systems.
Implementing schemes and apparatuses for CoBF with partial bandwidth or OFDMA and UEQM, including signaling methods for low-density parity-check (LDPC) in MU-MIMO, CoBF plus partial bandwidth or OFDMA, and CoBF plus UEQM, to enhance communication efficiency.
Improves system throughput by 5-20% and simplifies testing by defining CoBF with LDPC, freeing up coding bits for other signaling purposes without performance loss.
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Figure CN2025133136_15052026_PF_FP_ABST
Abstract
Description
COORDINATED BEAMFORMING WITH PARTIAL BANDWIDTH OR WITH OFDMA AND UEQM IN WIRELESS COMMUNICATIONSCROSS REFERENCE TO RELATED PATENT APPLICATION
[0001] The present disclosure is part of a non-provisional patent application claiming the priority benefit of U.S. Provisional Patent Application No. 63 / 716,761, filed 06 November 2024, the content of which being incorporated by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure is generally related to wireless communications and, more particularly, to coordinated beamforming (CoBF or CBF) with partial bandwidth or orthogonal frequency-division multiple-access (OFDMA) and unequal modulation (UEQM) in wireless communications.BACKGROUND
[0003] Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section.
[0004] In wireless communications such as Wi-Fi (or WiFi) and wireless local area network (WLAN) systems in accordance with one or more Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards (e.g., IEEE 802.11be and beyond) , multi-access point (multi-AP or MAP) with CoBF has been considered as one of several new features for next-generation Wi-Fi. At the time of the present disclosure, details on CoBF operations on partial bandwidth (BW) or OFDMA have not yet been specified. Moreover, at the time of the present disclosure, details on CoBF with UEQM have not yet been specified. Therefore, there is a need for a solution of CoBF with partial bandwidth or OFDMA and UEQM in wireless communications.SUMMARY
[0005] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
[0006] An objective of the present disclosure is to provide schemes, concepts, designs, techniques, methods and apparatuses pertaining to CoBF with partial bandwidth or OFDMA and UEQM in wireless communications. It is believed that implementations of one or more of the various schemes proposed herein may extend CoBF to partial BW or OFDMA as well as extend CoBF with UEQM. Moreover, the proposed schemes may provide signaling methods to enable: (1) low-density parity-check (LDPC) only for multi-user multiple-input-multiple-output (MU-MIMO) and CoBF; (2) CoBF plus partial bandwidth or OFDMA; and (3) CoBF plus UEQM.
[0007] In one aspect, a method may involve generating a physical-layer (PHY) protocol data unit (PPDU) . The method may also involve performing a CoBF transmission of the PPDU with signaling indicating whether the CoBF transmission is performed with an UEQM.
[0008] In another aspect, an apparatus may include a transceiver configured to communicate wirelessly and a processor coupled to the transceiver. The processor may generate a PPDU. The processor may also perform a CoBF transmission of the PPDU with signaling indicating whether the CoBF transmission is performed with an UEQM.
[0009] It is noteworthy that, although description provided herein may be in the context of certain radio access technologies, networks and network topologies such as, Wi-Fi, the proposed concepts, schemes and any variation (s) / derivative (s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies such as, for example and without limitation, Bluetooth, ZigBee, 5th Generation (5G) / New Radio (NR) , Long-Term Evolution (LTE) , LTE-Advanced, LTE-Advanced Pro, Internet-of-Things (IoT) , Industrial IoT (IIoT) and narrowband IoT (NB-IoT) . Thus, the scope of the present disclosure is not limited to the examples described herein.BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate implementations of the disclosure and, together with the description, serve to explain the principles of the disclosure. It is appreciable that the drawings are not necessarily in scale as some components may be shown to be out of proportion than the size in actual implementation to clearly illustrate the concept of the present disclosure.
[0011] FIG. 1 is a diagram of an example network environment in which various solutions and schemes in accordance with the present disclosure may be implemented.
[0012] FIG. 2 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0013] FIG. 3 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0014] FIG. 4 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0015] FIG. 5 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0016] FIG. 6 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0017] FIG. 7 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0018] FIG. 8 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0019] FIG. 9 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0020] FIG. 10 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0021] FIG. 11 is a block diagram of an example communication system under a proposed scheme in accordance with the present disclosure.
[0022] FIG. 12 is a flowchart of an example process under a proposed scheme in accordance with the present disclosure. DETAILED DESCRIPTION OF PREFERRED EMBOD IMENTS
[0023] Detailed embodiments and implementations of the claimed subject matters are disclosed herein. However, it shall be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matters which may be embodied in various forms. The present disclosure 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 description of the present disclosure is thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. In the description below, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations. Overview
[0024] Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and / or solutions pertaining to CoBF with partial bandwidth or OFDMA and UEQM in wireless communications. According to the present disclosure, a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
[0025] FIG. 1 illustrates an example network environment 100 in which various solutions and schemes in accordance with the present disclosure may be implemented. FIG. 2 ~ FIG. 12 illustrate examples of implementation of various proposed schemes in network environment 100 in accordance with the present disclosure. The following description of various proposed schemes is provided with reference to FIG. 1 ~ FIG. 12.
[0026] Referring to FIG. 1, network environment 100 may involve at least a station (STA) 110 communicating wirelessly with a STA 120. Either of STA 110 and STA 120 may function as an access point (AP) STA or a non-AP STA. In some cases, STA 110 and STA 120 may be associated with a basic service set (BSS) in accordance with one or more IEEE 802.11 standards (e.g., IEEE 802.11be and future-developed standards) . Each of STA 110 and STA 120 may be configured to communicate with each other by utilizing the CoBF with partial bandwidth or OFDMA and UEQM in wireless communications in accordance with various proposed schemes described below. It is noteworthy that the UEQM in the various proposed schemes may be in the frequency domain and / or the spatial domain. It is also noteworthy that, while the various proposed schemes may be individually or separately described below, in actual implementations some or all of the proposed schemes may be utilized or otherwise implemented jointly. Of course, each of the proposed schemes may be utilized or otherwise implemented individually or separately.
[0027] It has been shown by system simulations that UEQM may improve system throughput by around 5 ~ 20%. A given STA participating in a coordinated beamforming (CoBF or CBF) may be assigned with more than one spatial stream (> 1ss) such as, for example, two spatial streams (2ss) or three spatial streams (3ss) . Under a proposed scheme in accordance with the present disclosure, for a STA in CoBF with > 1ss, both equal modulation (EQM) and UEQM may be used. Moreover, under the proposed scheme, the same quadrature amplitude modulation (QAM) patterns defined for SU-MIMO in pertinent IEEE 802.11 standards may be reused for UEQM in CoBF. Under various proposed schemes in accordance with the present disclosure, CoBF with LDPC only may be defined to simplify the testing and minimize options. Advantageously, one Coding bit may be freed up for other signaling purposes, with no performance loss.
[0028] FIG. 2 illustrates an example design 200 under a proposed scheme in accordance with the present disclosure. Design 200 may pertain to signaling in the universal signal field (U-SIG) for CoBF. Under the proposed scheme, the signaling design may be based on a number of factors. For instance, the total number of users participating in CoBF may be up to 4 at most. Also, the signaling may be based on non-OFDMA MU-MIMO Ultra-High-Reliability (UHR) signal field (UHR-SIG) format. Moreover, two BSS colors may be carried in the U-SIG. Furthermore, CoBF physical-layer (PHY) protocol data unit (PPDU) type may be indicated in the U-SIG. Referring to FIG. 2, a first BSS color (BSS color 1) of the two BSS colors may be carried in the subfield formed by bits B7 ~ B12 of the U-SIG, and a second BSS color (BSS color 2) of the two BSS colors may be carried in the subfield formed by bits B20 ~B25 of the U-SIG.
[0029] FIG. 3 illustrates an example design 300 under a proposed scheme in accordance with the present disclosure. Design 300 may pertain to one option (Option-1) of signaling for CoBF using the Common field in the UHR-SIG. Under the proposed scheme, in the Common field of the UHR-SIG, the 3-bit subfield of “Number of non-OFDMA Users” may be used to indicate the number of users per-AP or per-BSS.
[0030] FIG. 4 illustrates an example design 400 under a proposed scheme in accordance with the present disclosure. Design 400 may pertain to another option (Option-1a) of signaling for CoBF using the User field in the UHR-SIG. Under the proposed scheme, in case that the “Number of non-OFDMA Users” subfield indicates the number of users per-AP or per-BSS color, the per-user field may be in the ordering of BSS color 1 and BSS color 2. Moreover, the 4-bit subfield of “Spatial Configuration” may be redefined to indicate the “starting spatial stream” and “number of spatial streams” in the per-user field.
[0031] FIG. 5 illustrates an example design 500 under a proposed scheme in accordance with the present disclosure. Design 500 may pertain to another option (Option-1b) of signaling for CoBF using the User field in the UHR-SIG. Under the proposed scheme, in case that the “Number of non-OFDMA Users” subfield indicates the number of users per-AP or per-BSS color, the per-user field may be in the ordering of BSS color 1 and BSS color 2. Moreover, the 4-bit subfield of “Spatial Configuration” may be redefined as described below. For instance, 3 bits of the 4 bits of the subfield of “Spatial Configuration” may be utilized to indicate the “starting spatial stream” (2 bits) and “number of spatial streams” (1 bit) in the per-user field. For instance, a value of “0” may indicate the number of spatial streams (Nss) is one spatial stream (1ss) , and a value of “1” may indicate the Nss is two spatial streams (2ss) . Moreover, bit B19 of the UHR-SIG may be repurposed to indicate whether modulation of the transmission is EQM or UEQM. Under the proposed scheme, bits B20 and B21 of the UHR-SIG may also be utilized to indicate QAM patterns if UEQM.
[0032] FIG. 6 illustrates an example design 600 under a proposed scheme in accordance with the present disclosure. Design 600 may pertain to another option (Option-2) of signaling for CoBF using the Common field in the UHR-SIG. Under the proposed scheme, in the Common field of the UHR-SIG, the 3-bit subfield of “Number of non-OFDMA Users” may be utilized to indicate the total number of users participating in CoBF, the same as the definition for non-OFDMA MU-MIMO.
[0033] FIG. 7 illustrates an example design 700 under a proposed scheme in accordance with the present disclosure. Design 700 may pertain to another option (Option-2a) of signaling for CoBF using the User field in the UHR-SIG. Under the proposed scheme, in case that the “Number of non-OFDMA Users” subfield indicates the number of users participating in CoBF, encoding of the IEEE 802.11ax subfield of “Spatial Configuration” may be reused but only use 3 bits thereof (e.g., bits B2B1B0) in Table 27-30 (e.g., using 0B2B1B0, or bits B17 ~ B19, in the subfield) for lookup table. Moreover, the most-significant bit (MSB) B3 in Table 27-30 or bit B16 or bit B19 in the Spatial Configuration subfield may be repurposed to differentiate BSS colors. For instance, B3 = 0 for BSS color 1; B3 = 1 for BSS color 2. Alternatively, the MSB or the least-significant bit (LSB) = 0 (or B16 or B19 = 0) for BSS color 1; the MSB or the LSB = 1 (or B16 or B19 = 1) for BSS color 2) .
[0034] FIG. 8 illustrates an example design 800 under a proposed scheme in accordance with the present disclosure. Design 800 may pertain to another option (Option-2b) of signaling for CoBF using the User field in the UHR-SIG. Under the proposed scheme, in case that the “Number of non-OFDMA Users” subfield indicates the number of users participating in CoBF, encoding of the IEEE 802.11ax subfield of “Spatial Configuration” may be reused but only use 3 bits thereof (e.g., bits B2B1B0) in Table 27-30 (e.g., using 0B2B1B0, or bits B17 ~ B19, in the subfield) for lookup table. Moreover, the MSB B3 in Table 27-30 or bit B16 or bit B19 in the Spatial Configuration subfield may be repurposed to differentiate BSS colors. For instance, B3 = 0 for BSS color 1; B3 = 1 for BSS color 2. Alternatively, the MSB or the LSB = 0 (or B16 or B19 = 0) for BSS color 1; the MSB or the LSB = 1 (or B16 or B19 = 1) for BSS color 2) .
[0035] Additionally, under this proposed scheme, bits B20 (reserved) and B21 (Coding) may be repurposed to indicate: (1) whether modulation of the transmission is EQM or UEQM; and (2) QAM patterns (up to 3 patterns) if UEQM. For instance, In one approach, a value of “00” in bits B20 and B21 may indicate UEQM with QAM pattern 1, a value of “01” in bits B20 and B21 may indicate UEQM with QAM pattern 2, a value of “10” in bits B20 and B21 may indicate UEQM with QAM pattern 3, and a value of “11” in bits B20 and B21 may indicate EQM. In an alternative approach, a value of “00” in bits B20 and B21 may indicate EQM, a value of “01” in bits B20 and B21 may indicate UEQM with QAM pattern 1, a value of “10” in bits B20 and B21 may indicate UEQM with QAM pattern 2, and a value of “11” in bits B20 and B21 may indicate UEQM with QAM pattern 3.
[0036] FIG. 9 illustrates an example design 900 under a proposed scheme in accordance with the present disclosure. Design 900 may pertain to CoBF on partial bandwidth (BW) or OFDMA. Under the proposed scheme, a CoBF PPDU may be transmitted over a partial BW or OFDMA. The size of the partial BW for CoBF may be only for a half size of bandwidth 160MHz or 320MHz (e.g., CoBF on an 80MHz frequency segment of a 160MHz bandwidth or on a 160MHz frequency segment of a 320MHz bandwidth) . Alternatively, the size of resource unit (RU) / multi-RU (MRU) for CoBF may be a 484-tone RU (RU484) , an MRU of 484 tones + 242 tones (MRU (484+242) ) , a 996-tone RU (RU996) , an MRU of 996 tones + 484 tones (MRU (996+484) ) , an MRU of 2x996 tones + 484 tones (MRU (2x996+484) ) , an MRU of 3x996 tones (MRU (3x996) ) , or an MRU of 3x996 tones + 484 tones (MRU (3x996+484) ) .
[0037] FIG. 10 illustrates an example design 1000 under a proposed scheme in accordance with the present disclosure. Design 1000 may pertain to signaling for CoBF with partial BW or CoBF with OFDMA. Under the proposed scheme, for CoBF on a partial BW or CoBF on OFDMA, the total number of users participating in CoBF may be indicated by the lower 3 bits (e.g., bits y2y1y0) in the RU Allocation subfield. The per-user signaling method may be the same as described above with respect to Option-1a / 1-b or Option-2a / 2b. Illustrative Implementations
[0038] FIG. 11 illustrates an example system 1100 having at least an example apparatus 1110 and an example apparatus 1120 in accordance with an implementation of the present disclosure. Each of apparatus 1110 and apparatus 1120 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to CoBF with partial bandwidth or OFDMA and UEQM in wireless communications, including the various schemes described above with respect to various proposed designs, concepts, schemes, systems and methods described above as well as processes described below. For instance, apparatus 1110 may be implemented in STA 110 and apparatus 1120 may be implemented in STA 120, or vice versa.
[0039] Each of apparatus 1110 and apparatus 1120 may be a part of an electronic apparatus, which may be a STA or an AP, such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus or a computing apparatus. When implemented in a STA, each of apparatus 1110 and apparatus 1120 may be implemented in a smartphone, a smart watch, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer. Each of apparatus 1110 and apparatus 1120 may also be a part of a machine type apparatus, which may be an IoT apparatus such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus. For instance, each of apparatus 1110 and apparatus 1120 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. When implemented in or as a network apparatus, apparatus 1110 and / or apparatus 1120 may be implemented in a network node, such as an AP in a WLAN.
[0040] In some implementations, each of apparatus 1110 and apparatus 1120 may be implemented in the form of one or more integrated-circuit (IC) chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors. In the various schemes described above, each of apparatus 1110 and apparatus 1120 may be implemented in or as a STA or an AP. Each of apparatus 1110 and apparatus 1120 may include at least some of those components shown in FIG. 11 such as a processor 1112 and a processor 1122, respectively, for example. Each of apparatus 1110 and apparatus 1120 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of apparatus 1110 and apparatus 1120 are neither shown in FIG. 11 nor described below in the interest of simplicity and brevity.
[0041] In one aspect, each of processor 1112 and processor 1122 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 a singular term “a processor” is used herein to refer to processor 1112 and processor 1122, each of processor 1112 and processor 1122 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure. In another aspect, each of processor 1112 and processor 1122 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, 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 that are configured and arranged to achieve specific purposes in accordance with the present disclosure. In other words, in at least some implementations, each of processor 1112 and processor 1122 is a special-purpose machine specifically designed, arranged and configured to perform specific tasks including those pertaining to CoBF with partial bandwidth or OFDMA and UEQM in wireless communications in accordance with various implementations of the present disclosure.
[0042] In some implementations, apparatus 1110 may also include a transceiver 1116 coupled to processor 1112. Transceiver 1116 may include a transmitter capable of wirelessly transmitting and a receiver capable of wirelessly receiving data. In some implementations, apparatus 1120 may also include a transceiver 1126 coupled to processor 1122. Transceiver 1126 may include a transmitter capable of wirelessly transmitting and a receiver capable of wirelessly receiving data. It is noteworthy that, although transceiver 1116 and transceiver 1126 are illustrated as being external to and separate from processor 1112 and processor 1122, respectively, in some implementations, transceiver 1116 may be an integral part of processor 1112 as a system on chip (SoC) and / or transceiver 1126 may be an integral part of processor 1122 as a SoC.
[0043] In some implementations, apparatus 1110 may further include a memory 1114 coupled to processor 1112 and capable of being accessed by processor 1112 and storing data therein. In some implementations, apparatus 1120 may further include a memory 1124 coupled to processor 1122 and capable of being accessed by processor 1122 and storing data therein. Each of memory 1114 and memory 1124 may include a type of random-access memory (RAM) such as dynamic RAM (DRAM) , static RAM (SRAM) , thyristor RAM (T-RAM) and / or zero-capacitor RAM (Z-RAM) . Alternatively, or additionally, each of memory 1114 and memory 1124 may include a type of read-only memory (ROM) such as mask ROM, programmable ROM (PROM) , erasable programmable ROM (EPROM) and / or electrically erasable programmable ROM (EEPROM) . Alternatively, or additionally, each of memory 1114 and memory 1124 may include a type of non-volatile random-access memory (NVRAM) such as flash memory, solid-state memory, ferroelectric RAM (FeRAM) , magnetoresistive RAM (MRAM) and / or phase-change memory.
[0044] Each of apparatus 1110 and apparatus 1120 may be a communication entity capable of communicating with each other using various proposed schemes in accordance with the present disclosure. For illustrative purposes and without limitation, a description of capabilities of apparatus 1110, as STA 110, and apparatus 1120, as STA 120, is provided below in the context of process 1200. It is noteworthy that, although a detailed description of capabilities, functionalities and / or technical features of apparatus 1110 is provided below, the same may be applied to apparatus 1120 although a detailed description thereof is not provided solely in the interest of brevity. It is also noteworthy that, although the example implementations described below are provided in the context of WLAN, the same may be implemented in other types of networks. Illustrative Processes
[0045] FIG. 12 illustrates an example process 1200 in accordance with an implementation of the present disclosure. Process 1200 may represent an aspect of implementing various proposed designs, concepts, schemes, systems and methods described above. More specifically, process 1200 may represent an aspect of the proposed concepts and schemes pertaining to CoBF with partial bandwidth or OFDMA and UEQM in wireless communications in accordance with the present disclosure. Process 1200 may include one or more operations, actions, or functions as illustrated by one or more of blocks. Although illustrated as discrete blocks, various blocks of process 1200 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks / sub-blocks of process 1200 may be executed in the order shown in FIG. 12 or, alternatively, in a different order. Furthermore, one or more of the blocks / sub-blocks of process 1200 may be executed repeatedly or iteratively. Process 1200 may be implemented by or in apparatus 1110 and apparatus 1120 as well as any variations thereof. Solely for illustrative purposes and without limiting the scope, process 1200 is described below in the context of apparatus 1110 implemented in or as STA 110 and apparatus 1120 implemented in or as STA 120 of a wireless network such as a WLAN in network environment 100 in accordance with one or more of IEEE 802.11 standards. Process 1200 may begin at block 1210.
[0046] At 1210, process 1200 may involve processor 1112 of apparatus 1110 (e.g., STA 110) generating a PPDU. Process 1200 may proceed from 1210 to 1220.
[0047] At 1220, process 1200 may involve processor 1112 performing, via transceiver 1116, a CoBF transmission of the PPDU with signaling indicating whether the CoBF transmission is performed with an UEQM.
[0048] In some implementations, in performing the CoBF transmission, process 1200 may involve processor 1112 performing the CoBF transmission with the UEQM. In some implementations, in performing the CoBF transmission with the UEQM, process 1200 may involve processor 1112 coding the CoBF transmission using LDPC only.
[0049] In some implementations, in signaling, process 1200 may involve processor 1112 signaling in a U-SIG of the PPDU. In some implementations, the U-SIG may indicate: (a) a total number of users, up to 4, participating in the CoBF transmission; (b) two BSS colors, including a first BSS color (BSS color 1) and a second BSS color (BSS color 2) ; and (c) a CoBF PPDU type.
[0050] In some implementations, in signaling, process 1200 may involve processor 1112 signaling in a UHR-SIG of the PPDU. In some implementations, in the User field in the UHR-SIG: (a) a Spatial Configuration subfield may be repurposed such that a portion of the Spatial Configuration subfield indicates a starting spatial stream and another portion of the Spatial Configuration subfield indicates a number of spatial streams; (b) one other bit in the User field in the UHR-SIG may indicate whether the CoBF transmission is performed with an EQM or the UEQM; and (c) two other bits in the User field in the UHR-SIG may indicate one of up to four QAM patterns in an event that the CoBF transmission is performed with the UEQM.
[0051] Alternatively, or additionally, in the User field in the UHR-SIG, a most-significant bit (MSB) or least-significant bit (LSB) of a 4-bit Spatial Configuration subfield as defined in an IEEE 802.11ax specification may be used to indicate a basic service set (BSS) color such that a first value indicates a first BSS color (BSS color 1) and a second value indicates a second BSS color (BSS color 2) . In some implementations, in the User field in the UHR-SIG, a reserved bit and another bit as a Coding subfield may together indicate: (a) one of up to three QAM patterns responsive to the CoBF transmission is performed with the UEQM; or (b) that the CoBF transmission is performed with an EQM.
[0052] In some implementations, in performing the CoBF transmission, process 1200 may involve processor 1112 performing the CoBF transmission on a partial BW or on OFDMA. In some implementations, in performing the CoBF transmission on the partial BW or on the OFDMA, process 1200 may involve processor 1112: (a) performing the CoBF transmission on a first portion of a full bandwidth (e.g., on a first 80MHz frequency segment of a full 160MHz bandwidth or on a first 160MHz frequency segment of a full 320MHz bandwidth) ; and (b) performing a CoBF or non-CoBF transmission on a second portion of the full bandwidth (e.g., on a second 80MHz frequency segment of the full 160MHz bandwidth or on a second 160MHz frequency segment of the full 320MHz bandwidth) . Alternatively, or additionally, in performing the CoBF transmission on the partial BW or OFDMA, process 1200 may involve processor 1112: (a) performing the CoBF transmission on a first RU or MRU in a first portion of a full bandwidth; and (b) performing a non-CoBF transmission on a second RU or MRU in a second portion of the full bandwidth.
[0053] In some implementations, in signaling, process 1200 may involve processor 1112 signaling of the CoBF transmission on the partial BW or on the OFDMA by indicating a number of users participating in CoBF using a number of lower bits in a RU Allocation subfield of the PPDU. Additional Notes
[0054] The herein-described subject matter sometimes illustrates different components contained within, or connected with, different other 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. Hence, 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 couplable" , to each other to achieve the desired functionality. Specific examples of operably couplable 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.
[0055] Further, 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 as is appropriate to the context and / or application. The various singular / plural permutations may be expressly set forth herein for sake of clarity.
[0056] Moreover, it will be understood by those skilled in the art that, in general, terms used herein, and especially in the appended claims, e.g., bodies of the appended claims, are generally intended as “open” terms, e.g., the term “including” should be interpreted as “including but not limited to, ” the term “having” should be interpreted as “having at least, ” the term “includes” should be interpreted as “includes but is not limited to, ” etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an 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 recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to implementations containing only one such recitation, 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” should be interpreted to mean “at least one” or “one or more; ” the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation 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 recitations, " without other modifiers, means at least two recitations, or two or more recitations. Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “asystem having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. In those instances where a convention analogous to “at least one of A, B, or C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “asystem having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. It will be further understood by those within the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either 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. ”
[0057] From the foregoing, it will be appreciated that various implementations of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various implementations disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Claims
1.A method, comprising:generating, by a processor of an apparatus, a physical-layer (PHY) protocol data unit (PPDU) ; andperforming, by the processor, a coordinated beamforming (CoBF) transmission of the PPDU,wherein the CoBF transmission comprises signaling indicating whether the CoBF transmission is performed with an unequal modulation (UEQM) .2.The method of Claim 1, wherein the performing of the CoBF transmission comprises performing the CoBF transmission with the UEQM.3.The method of Claim 2, wherein the performing of the CoBF transmission with the UEQM comprises coding the CoBF transmission using low-density parity-check (LDPC) only.4.The method of Claim 1, wherein the signaling comprises signaling in a universal signal field (U-SIG) of the PPDU.5.The method of Claim 4, wherein the U-SIG indicates:a total number of users, up to 4, participating in the CoBF transmission;two basic service set (BSS) colors, including a first BSS color (BSS color 1) and a second BSS color (BSS color 2) ; anda CoBF PPDU type.6.The method of Claim 1, wherein the signaling comprises signaling in a User field in an Ultra-High-Reliability (UHR) signal field (UHR-SIG) of the PPDU.7.The method of Claim 6, wherein, in the User field in the UHR-SIG:a Spatial Configuration subfield is repurposed such that a portion of the Spatial Configuration subfield indicates a starting spatial stream and another portion of the Spatial Configuration subfield indicates a number of spatial streams;one other bit in the User field in the UHR-SIG indicates whether the CoBF transmission is performed with an equal modulation (EQM) or the UEQM; andtwo other bits in the User field in the UHR-SIG indicate one of up to four quadrature amplitude modulation (QAM) patterns in an event that the CoBF transmission is performed with the UEQM.8.The method of Claim 6, wherein, in the User field in the UHR-SIG, a most-significant bit (MSB) or least-significant bit (LSB) of a 4-bit Spatial Configuration subfield as defined in an Institute of Electrical and Electronics Engineers (IEEE) 802.11ax specification is used to indicate a basic service set (BSS) color such that a first value indicates a first BSS color (BSS color 1) and a second value indicates a second BSS color (BSS color 2) .9.The method of Claim 8, wherein, in the User field in the UHR-SIG, a reserved bit and another bit as a Coding subfield together indicate:one of up to three quadrature amplitude modulation (QAM) patterns responsive to the CoBF transmission is performed with the UEQM; orthat the CoBF transmission is performed with an equal modulation (EQM) .10.The method of Claim 1, wherein the performing of the CoBF transmission comprises performing the CoBF transmission on a partial bandwidth (BW) or on orthogonal frequency-division multiple-access (OFDMA) .11.The method of Claim 10, wherein the performing of the CoBF transmission on the partial BW or on the OFDMA comprises:performing the CoBF transmission on a first portion of a full bandwidth; andperforming a CoBF or non-CoBF transmission on a second portion of the full bandwidth.12.The method of Claim 10, wherein the performing of the CoBF transmission on the partial BW or OFDMA comprises:performing the CoBF transmission on a first resource unit (RU) or multi-resource unit (MRU) in a first portion of a full bandwidth; andperforming a CoBF or non-CoBF transmission on a second RU or MRU in a second portion of the full bandwidth.13.The method of Claim 10, wherein the signaling comprises signaling of the CoBF transmission on the partial BW or on the OFDMA by indicating a number of users participating in CoBF using a number of lower bits in a Resource Unit (RU) Allocation subfield of the PPDU.14.An apparatus, comprising:a transceiver configured to communicate wirelessly; anda processor coupled to the transceiver and configured to perform operations comprising:generating a physical-layer (PHY) protocol data unit (PPDU) ; andperforming, via the transceiver, a coordinated beamforming (CoBF) transmission of the PPDU,wherein the CoBF transmission comprises signaling indicating whether the CoBF transmission is performed with an unequal modulation (UEQM) .15.The apparatus of Claim 14, wherein the performing of the CoBF transmission comprises performing the CoBF transmission with the UEQM, and wherein the performing of the CoBF transmission with the UEQM comprises coding the CoBF transmission using low-density parity-check (LDPC) only.16.The apparatus of Claim 14, wherein the signaling comprises signaling in a universal signal field (U-SIG) of the PPDU, and wherein the U-SIG indicates:a total number of users, up to 4, participating in the CoBF transmission;two basic service set (BSS) colors, including a first BSS color (BSS color 1) and a second BSS color (BSS color 2) ; anda CoBF PPDU type.17.The apparatus of Claim 14, wherein the signaling comprises signaling in a User field in an Ultra-High-Reliability (UHR) signal field (UHR-SIG) of the PPDU, and wherein, in the User field in the UHR-SIG:a Spatial Configuration subfield is repurposed such that a portion of the Spatial Configuration subfield indicates a starting spatial stream and another portion of the Spatial Configuration subfield indicates a number of spatial streams;one other bit in the User field in the UHR-SIG indicates whether the CoBF transmission is performed with an equal modulation (EQM) or the UEQM; andtwo other bits in the User field in the UHR-SIG indicate one of up to four quadrature amplitude modulation (QAM) patterns in an event that the CoBF transmission is performed with the UEQM.18.The apparatus of Claim 14, wherein the signaling comprises signaling in a User field in an Ultra-High-Reliability (UHR) signal field (UHR-SIG) of the PPDU, and wherein, in the User field in the UHR-SIG:a most-significant bit (MSB) or least-significant bit (LSB) of a 4-bit Spatial Configuration subfield as defined in an Institute of Electrical and Electronics Engineers (IEEE) 802.11ax specification is used to indicate a basic service set (BSS) color such that a first value indicates a first BSS color (BSS color 1) and a second value indicates a second BSS color (BSS color 2) ; anda reserved bit and another bit as a Coding subfield together indicate:one of up to three quadrature amplitude modulation (QAM) patterns responsive to the CoBF transmission is performed with the UEQM; orthat the CoBF transmission is performed with an equal modulation (EQM) .19.The apparatus of Claim 14, wherein the performing of the CoBF transmission comprises performing the CoBF transmission on a partial bandwidth (BW) or on orthogonal frequency-division multiple-access (OFDMA) .20.The apparatus of Claim 19, wherein the signaling comprises signaling of the CoBF transmission on the partial BW or on the OFDMA by indicating a number of users participating in CoBF using a number of lower bits in a Resource Unit (RU) Allocation subfield of the PPDU.