Mediatek Singapore Pte. Ltd.

Thomas Edward Pare

Jianhan Liu

Shengquan Hu

Yongho Seok

James Chih-Shi Yee

Kai Ying Lu

Gary Allen Anwyl

James June-Ming Wang

Po-Yuen Cheng

Chung-Ta Ku

Shuling Feng

Chao-Chun Wang

Weisung Tsao

Yungping Hsu

Gabor Bajko

Hsuan-Yu Liu

Kaiying Lu

Shihchieh Lee

Various schemes pertaining to optimization of binary convolutionally encoded (BCC) interleaver and low-density parity-check (LDPC) tone mapper for distributed-tone resource units (RUs) and multi-resource units (MRUs) in 6 GHZ low-power indoor (LPI) systems are described. An apparatus processes a plurality of subcarriers of a RU to generate a distributed-tone RU (dRU) or a distributed-tone multi-RU (dMRU). The apparatus then transmits the dRU or the dMRU to another apparatus. In processing the plurality of subcarriers, the apparatus codes a plurality of information bits by either LDPC encoding or BCC encoding and transmitting the plurality of subcarriers with one or more optimization parameters using a LDPC tone mapper or a BCC interleaver.

Optimization of BCC interleaver and LDPC tone mapper for distributed-tone resource units and distributed-tone multi-resource units

Accordingly, embodiments of the present invention provide methods and devices for low power transmissions that provide improved wireless coverage for 6 GHz LPI transmissions using novel tone mapping techniques. Resource units (RUs) tones are distributed over larger bandwidths to achieve higher transmission power while operating within the PSD requirements of LPI. The tone distribution can include global tone mapping of smaller RUs distributed onto larger bandwidths, or group-based tone distribution methods, for example.

Methods and devices for tone distribution for low power transmissions in a wireless network

Embodiments of the present invention provide transmission schemes and methods that can assign multiple resource units (RUs) to a single wireless station using Aggregate Media Access Control Protocol Data Unit (A-MPDUs) in a flexible transmission scheme for the multi-RUs transmission. Embodiments of the present invention can send and receive data sing multiple resource units allocated to a single wireless STA. A 20 MHz segment and a 40 MHz segment on either side of a punctured portion of an 80 MHz segment can be treated as separate resource units (RUs), and the RUs can be assigned to the same wireless user/device. Each punctured 80 MHz segment can be interleaved separately. Different processes for encoding data and transmission schemes for transmitting the data are described herein according to embodiments of the present invention. Different transmission schemes can be used based on the size and number of the RUs allocated to an STA.

Aggregated resource unit transmission scheme for single station allocation in WLAN

Various schemes pertaining to optimization of distributed-tone resource unit (dRU) and distributed-tone multi-resource unit (dMRU) designs for transmission in a 6 GHz low-power indoor (LPI) system are described. An apparatus distributes a plurality of subcarriers of a resource unit (RU) to generate a dRU or a distributed-tone multi-RU (dMRU) on an 80 MHz frequency segment or subblock. The apparatus then communicates with a communication entity using the dRU or the dMRU.

Optimization of distributed-tone resource unit and multi-resource unit designs for transmission in 6GHz LPI system

Various schemes pertaining to optimization of distributed resource unit (RU) tone plans for peak-to-average power ratio (PAPR) reduction in 6 GHz low-power indoor (LPI) systems are described. An apparatus distributes a plurality of subcarriers of a RU over a bandwidth to generate a distributed-tone RU (dRU) or a distributed-tone multi-RU (dMRU). The apparatus then communicates with a communication entity using the dRU or the dMRU. In distributing the plurality of subcarriers of the RU to generate the dRU or the dMRU, the apparatus distributes the plurality of subcarriers of the RU with a predefined span over each 20 MHz frequency segment or subblock in the bandwidth and with a gap of at least a minimum size around a center direct-current (DC) tone in a distribution pattern of the plurality of subcarriers to result in reduction in a PAPR in communicating with the communication entity.

Distributed resource unit tone plan optimization for PAPR reduction

Various schemes pertaining to designs of distributed-tone resource units (dRUs) on a partial bandwidth in a 6 GHz low-power indoor (LPI) system are described. An apparatus distributes a plurality of subcarriers of a resource unit (RU) to generate a dRU over a partial bandwidth of a bandwidth. The apparatus then communicates with a communication entity using the dRU.

Designs of distributed-tone resource units on partial bandwidth

Various schemes pertaining to transmission power control (TPC) for distributed-tone resource units (dRUs) and distributed multi-resource units (dMRUs) in 6 GHz low-power indoor (LPI) systems are described. A communication entity distributes subcarriers of a resource unit (RU) and a multi-RU over a physical-layer protocol data unit (PPDU) bandwidth or a frequency subblock of a bandwidth to generate a dRU and a dMRU associated with an uplink (UL) trigger-based (TB) PPDU comprising at least an extremely-high-throughput (EHT) short training field (EHT-STF), an EHT long training field (EHT-LTF), and a payload of data. The communication entity then transmits the dRU or dMRU associated with the UL TB PPDU with transmission power control such that symbols associated with the EHT-STF are transmitted with a first power and symbols associated with the EHT-LTF and the payload are transmitted with a second power.

Transmission power control for distributed-tone resource units and multi-resource units in 6GHz low-power indoor systems

Various schemes pertaining to designs of a distributed-tone resource unit (dRU) on a frequency subblock of a wide-bandwidth physical-layer protocol data unit (PPDU) in 6 GHz low-power indoor (LPI) systems are described. A communication entity generates a PPDU with subcarriers of a resource unit (RU) distributed on a frequency subblock of a plurality of frequency subblocks of a wide bandwidth. The communication entity then transmits the PPDU over the wide bandwidth. Each of the plurality of frequency subblocks includes a 20 MHz, 40 MHz or 80 MHz frequency subblock. The wide bandwidth includes an 80 MHz, 160 MHz or 320 MHz bandwidth. The subcarriers of the RU are distributed on the frequency block by applying a constant shift to a dRU on a 20 MHz, 40 MHz or 80 MHz bandwidth.

Distributed-tone RU on frequency subblock of wide-bandwidth PPDU

Various schemes pertaining to subcarrier indices for distributed-tone resource units (RUs) in 6 GHz low-power indoor (LPI) systems are described. A communication entity distributes frequency tones of a RU over a distribution bandwidth as a distributed-tone RU (dRU). The communication entity also generates generating a plurality of subcarrier indices for the distributed-tone RU such that a distribution of the distributed-tone RU is symmetric or asymmetric to a direct-current (DC) tone along an axis of subcarrier indices. The communication entity then communicates wirelessly using the distributed-tone RU in a 6 GHz LPI system.

Subcarrier indices for distributed-tone resource units in 6GHz low-power indoor systems

An apparatus (e.g., an access point (AP) establishes a plurality of links comprising a primary link and at least a secondary link. The apparatus transmits a management frame on the primary link to indicate a multi-link capability of the AP. The apparatus configures the secondary link for one or more non-AP stations (STAs), which are capable of operating on the primary link and the secondary link, with multi-link capability and operating parameters through an association procedure on the primary link.

Enhanced high-throughput multi-link channel access and operation

Various schemes pertaining to tone alignment for distributed-tone resource units (dRUs) in 6 GHz low-power indoor (LPI) systems are described. A communication entity distributes subcarriers of a resource unit (RU) over a bandwidth to generate a dRU with tone alignment. The communication entity then communicates wirelessly using the dRU in a 6 GHz LPI system.

Tone alignment for distributed-tone resource units in 6GHz low-power indoor systems

Various schemes pertaining to distributed-tone resource unit (dRU) transmission schemes with frequency-domain duplication in a 6 GHz low-power indoor (LPI) system are described. An apparatus distributes a plurality of subcarriers of a resource unit (RU) to generate a dRU with frequency-domain duplication on a plurality of frequency subblocks. The apparatus then communicates with a communication entity on the plurality of frequency subblocks.

Distributed-tone resource unit transmission schemes with frequency-domain duplication in 6GHz LPI system

Embodiments of the present invention provide duplication schemes for control frames to extend the range of LPI in the 6 GHz wireless band for EHT WLAN. Duplicate 20 MHz legacy preambles containing L-STF, L-LTF, L-SIG and RL-SIG, U-SIG and EHT-SIG fields may be used to transmit beacon and other control frames using duplicate PPDUs to extend transmission range thereof. Non-HT duplication can be performed to maintain backwards compatibility with legacy devices. HE duplication can include duplication of a 20 MHz HE SU PPDUs over 40 MHz, 80 MHz, 160 MHz or 320 MHz portions, for example. DCM+MCSor duplication over DCM+MCSmay be applied to the payload, and a duplication indication is inserted in the U-SIG field or EHT-SIG field to indicate if the duplication is applied to the payload over DCM+MCS

Systems and methods of low power indoor transmission in a wireless network

Various schemes pertaining to extremely-high-throughput short training field (EHT-STF) transmission for distributed-tone resource units (dRUs) in 6 GHz low-power indoor (LPI) systems are described. A communication entity distributes subcarriers of a RU over an entire physical-layer protocol data unit (PPDU) bandwidth or a frequency subblock of a bandwidth to generate a dRU associated with an EHT-STF of an uplink (UL) trigger-based (TB) PPDU. The communication entity then transmits the dRU associated with the EHT-STF in the entire PPDU bandwidth or a tone range of a regular RU (rRU) corresponding to the frequency subblock.

EHT-STF transmission for distributed-tone resource units in 6GHz low-power indoor systems

Embodiments of the present invention provide a method and apparatus for coordinated multi-AP channel access in a wireless network. A wireless AP that obtains a transmission opportunity (TXOP) (a 'coordinator AP') can grant one or more STAs or APs under control of the coordinator AP the use of some of the bandwidth granted by the TXOP. The STAs or APs that are granted the use of the bandwidth are referred to as “coordinated APs.” Thereafter, a coordinator AP or a coordinated AP can create a new basic service set (BSS) of devices for coordinating data transmissions. For example, the coordinated AP may serve as a relay, where the coordinated AP services devices in a new BSS by sending and receiving data with a coordinator AP in a different BSS.

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San Jose, CA, United States of America

Thomas Edward Pare