US Pat. No. 9,374,209

TRANSMISSION SIGNAL GENERATION APPARATUS, TRANSMISSION SIGNAL GENERATION METHOD, RECEPTION SIGNAL APPARATUS, AND RECEPTION SIGNAL METHOD

Wi-Fi One, LLC, Plano, T...

1. A transmission signal generation apparatus comprising:
a mapper configured to generate one or more transmission signals, each transmission signal including a data frame having preamble
information, pilot information, and data information,

wherein each of the one or more transmission signals includes:
an associated preamble multiplied by a factor so that an average reception power of the associated preamble corresponds to
an average reception power of the data information received with the associated preamble,

plural pilot symbol sequences; and
an Inverse Fourier transformer configured to:
generate for each of the one or more transmission signals a corresponding Orthogonal Frequency Division Multiplexed (OFDM)
signal for transmission by a corresponding one of one or more antennas by Inverse Fourier transforming each of the transmission
signals,

wherein:
the Inverse Fourier transformer is configured to arrange:
the pilot symbol sequences in corresponding pilot carriers during a first time period, and
sets of the pilot carriers in a same carrier position in the OFDM signal, and
wherein the plural pilot symbol sequences are all orthogonal to each other.

US Pat. No. 9,106,486

TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD

Wi-Fi One, LLC, Plano, T...

7. A transmission apparatus configured to:
generate first symbols for transmitting data, a signal point of each of the first symbols on an in-phase and quadrature-phase
plane comprising an in-phase component and a quadrature-phase component, a first symbol being a quadrature baseband signal;

generate a second symbol, the second symbol being a pilot symbol and a second quadrature baseband signal;
determine an interval of symbol insertion, output a signal indicating the determined interval, and select an insertion pattern
of the second symbol, from a plurality of predetermined insertion patterns;

insert the second symbol in the first symbols, based on the selected insertion pattern, to generate a transmission signal;
and

transmit the transmission signal,
wherein the first symbols are generated using a modulation scheme selected from a plurality of modulation schemes.

US Pat. No. 9,048,988

TRANSMISSION SIGNAL GENERATION APPARATUS, TRANSMISSION SIGNAL GENERATION METHOD, RECEPTION SIGNAL GENERATION APPARATUS, AND RECEPTION SIGNAL GENERATION METHOD

WI-FI ONE, LLC, Plano, T...

1. A transmission signal generation apparatus comprising:
a mapper configured to generate a transmission signal, including a data frame having preamble information, pilot information,
and data information, using either a first transmission signal generation method of generating a first transmission signal
including a first pilot symbol sequence, a second pilot symbol sequence, and a first preamble multiplied by a factor so that
an average reception power of the first preamble corresponds to an average reception power of the data information received
with the first preamble, and a second transmission signal including a third pilot symbol sequence, a fourth pilot symbol sequence,
and a second preamble multiplied by a factor so that an average reception power of the second preamble corresponds to an average
reception power of data information received with the second preamble or a second transmission signal generation method of
generating a third transmission signal including a fifth pilot symbol sequence, a sixth pilot symbol sequence, and a third
preamble multiplied by a factor so that average reception power of the third preamble corresponds to an average reception
power of data information received with the third preamble; and

an Inverse Fourier transformer configured to:
generate a first OFDM signal by Inverse Fourier transforming the first transmission signal for transmission of the first OFDM
signal from a first antenna, and generate a second OFDM signal by Inverse Fourier transforming the second transmission signal
for transmission of the second OFDM signal from a second antenna in a same frequency and a same transmission period as the
first OFDM signal by the first transmission signal generation method, or generate a third OFDM signal by Inverse Fourier transforming
the third transmission signal for transmission of the third OFDM signal from the first antenna by the second transmission
signal generation method,

wherein:
the Inverse Fourier transformer is configured to arrange:
the first pilot symbol sequence in a first pilot carrier during a first time period;
the second pilot symbol sequence in a second pilot carrier during the first time period;
the third pilot symbol sequence in a third pilot carrier during the first time period; and
the fourth pilot symbol sequence in a fourth pilot carrier during the first time period;
the first pilot carrier and the third pilot carrier are in a same carrier position in the OFDM signal;
the second pilot carrier and the fourth pilot carrier are in a same carrier position in the OFDM signal;
the first pilot symbol sequence is a symbol sequence orthogonal to the third pilot symbol sequence; and
the third pilot symbol sequence is a symbol sequence different from the first pilot symbol sequence and same as the second
pilot symbol sequence.

US Pat. No. 9,590,834

RADIO COMMUNICATION APPARATUS CAPABLE OF SWITCHING MODULATION SCHEMES

Wi-Fi One, LLC, Plano, T...

1. A transmitting apparatus, comprising:
a modulation signal generator that generates a modulation signal by modulating transmission data selecting one of a plurality
of modulation schemes according to a frame timing signal, a first modulation scheme of the plurality of modulation schemes
having a higher m-ary modulation value than other modulation schemes of the plurality of modulation schemes;

a pilot signal generator that generates a pilot signal by selecting one of a plurality of amplitudes according to the frame
timing signal;

an orthogonal frequency division multiplexing (OFDM) signal generator that generates an OFDM signal by selecting the modulation
signal and the pilot signal according to the frame timing signal;

a radio converter that converts the OFDM signal to a radio signal;
an amplifier that amplifies the radio signal; and
an antenna that transmits the amplified radio signal,
wherein the pilot signal is inserted in the OFDM signal per a predetermined OFDM symbol and per a predetermined subcarrier
and has a lower amplitude than a maximum amplitude of the first modulation scheme in an in-phase-quadrature (IQ) plane.

US Pat. No. 9,276,791

METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL AREA NETWORK SYSTEM

Wi-Fi One, LLC, Plano, T...

1. A method for receiving data in a wireless local area network, performed by a receiver, the method comprising:
receiving a signal field that is mapped onto a first binary phase shift keying (BPSK) constellation;
receiving a first Very High Throughput Signal (VHT-SIG) field that is mapped onto the first BPSK constellation; and
receiving a second VHT-SIG field that is mapped onto a second BPSK constellation;
wherein the second BSPK constellation is rotated by 90° counter-clockwise relative to the first BPSK constellation, and
wherein the first VHT-SIG field includes an indicator indicating Single User-Multiple Input Multiple Output (SU-MIMO) transmission
or multi user-MIMO (MU-MIMO) transmission, and the second VHT-SIG field includes a cyclic redundancy check (CRC) for the first
and second VHT-SIG fields.

US Pat. No. 9,246,567

TRANSMISSION SIGNAL GENERATION METHOD, TRANSMISSION SIGNAL GENERATION APPARATUS, RECEPTION SIGNAL GENERATION METHOD, AND RECEPTION SIGNAL GENERATION APPARATUS

Wi-Fi One, LLC, Plano, T...

16. A reception signal generation apparatus comprising:
a receiver that receives a plurality of signals;
a propagation path estimator structured to generate a propagation path estimation value by estimating a propagation path using
an estimation symbol included in the received plurality of signals; and

a decoder structured to decode data included in the received plurality of signals using the propagation path estimation value,
wherein:

the received plurality of signals are obtained by switching between a first plurality of signals including same data generated
in one transmission signal generation apparatus and a second plurality of signals including different data generated in the
one transmission signal generation apparatus; and

the first plurality of signals and the second plurality of signals are obtained by changing a modulation scheme using a shorter
interval than an interval of switching between the first plurality of signals and the second plurality of signals.

US Pat. No. 9,055,563

SERVICE IN WLAN INTER-WORKING, ADDRESS MANAGEMENT SYSTEM, AND METHOD

Wi-Fi One, LLC, Plano, T...

1. A network element, located in a cellular network, for allocating an address for a mobile terminal to access a service from
a WLAN access network, the service being provided in the cellular network, the network element comprising:
an information processing device configured to receive a tunnel setup request message from the mobile terminal via the WLAN
access network, the tunnel setup request message including a service request identifier for accessing the requested service
and a mobile terminal identifier, and to allocate an address for use by the mobile terminal to access the requested service
based on the service request identifier and the mobile terminal identifier.

US Pat. No. 10,075,272

TRANSMISSION SIGNAL GENERATION APPARATUS, TRANSMISSION SIGNAL GENERATION METHOD, RECEPTION SIGNAL APPARATUS, AND RECEPTION SIGNAL METHOD

Wi-Fi One, LLC, Plano, T...

1. A transmission apparatus comprising:electronic circuitry to:
map a first stream of input data to first complex symbols in serial format;
convert the first complex symbols in serial format into first complex symbols in parallel format;
perform an inverse Fourier transform on the first complex symbols in parallel format to form first Orthogonal Frequency Division Multiplexed (OFDM) signals associated with multiple subcarriers;
transmit the first OFDM signals via a first antenna over the multiple subcarriers in a same frequency band over a same time period that includes a same set of time slots;
transmit first pilot information via a first antenna on a first one of a plurality of pilot subcarriers during the same set of time slots;
transmit second pilot information via a first antenna on a second one of a plurality of pilot subcarriers during the same set of time slots, the second pilot information being different from the first pilot information;
map a second stream of input data to second complex symbols in serial format;
convert the second complex symbols in serial format into second complex symbols in parallel format;
perform an inverse Fourier transform on the second complex symbols in parallel format to form second OFDM signals associated with the multiple subcarriers;
transmit the second OFDM signals via a second antenna over the multiple subcarriers in the same frequency band over the same time period that includes the same set of time slots,
transmit the first pilot information via the second antenna on the second pilot subcarrier during the same set of time slots; and
transmit the second pilot information on one of the plurality of pilot subcarriers during the same set of time slots.

US Pat. No. 9,876,662

METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL AREA NETWORK SYSTEM

Wi-Fi One, LLC, Plano, T...

1. A device for receiving data in a wireless local area network comprising:
a transceiver configured to receive a data frame, the data frame comprising:
a legacy signal field including a first symbol that is mapped onto a first binary phase shift keying (BPSK) constellation;
a Very High Throughput Signal (VHT-SIG) field including a second symbol and a third symbol, the second symbol being mapped
onto the first BPSK constellation, and the third symbol being mapped onto a second BPSK constellation, and the second BSPK
constellation being rotated by 90° counter-clockwise relative to the first BPSK constellation; and

wherein the second symbol includes an indicator indicating Single User-Multiple Input Multiple Output (SU-MIMO) transmission
or multi user-MIMO (MU-MIMO) transmission, and the third symbol includes a cyclic redundancy check (CRC) for the second symbol
and, at least a portion of, the third symbol.

US Pat. No. 9,838,178

TRANSMISSION SIGNAL GENERATION APPARATUS, TRANSMISSION SIGNAL GENERATION METHOD, RECEPTION SIGNAL APPARATUS, AND RECEPTION SIGNAL METHOD

Wi-Fi One, LLC, Plano, T...

1. A transmission apparatus comprising:
circuitry configured to:
form a plurality of Orthogonal Frequency Division Multiplexed (OFDM) signals, each of the plurality of OFDM signals including
plural pilot carriers carrying pilot sequences located at identical carrier positions among the plurality of OFDM signals,
and

assign orthogonal ones of the pilot sequences to an identical carrier position among the plurality of OFDM signals, and
a plurality of antennas configured to transmit the plurality of OFDM signals over an identical frequency band at an identical
time period,

wherein at least two of the plurality of antennas are configured to transmit an identical one of the pilot sequences during
an identical time period.

US Pat. No. 9,525,575

TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD

Wi-Fi One, LLC, Plano, T...

24. A reception apparatus comprising:
a receiver to receive a modulation signal transmitted from a transmission apparatus;
a transmission path estimator that extracts a second symbol from the received modulation signal and estimates transmission
path of the modulation signal using the second symbol; and

a detector that outputs a received data signal from a first symbol sequence included in the modulation signal, using transmission
path estimation, wherein

the modulation signal includes:
at least one second symbol, generated using a phase shift keying (PSK) modulation scheme, inserted in a first symbol sequence
generated using a modulation scheme selected from a plurality of modulation scheme.

US Pat. No. 9,986,426

SERVICE IN WLAN INTER-WORKING, ADDRESS MANAGEMENT SYSTEM, AND METHOD

Wi-Fi One, LLC, Plano, T...

1. A mobile terminal associated with a first wireless communication network, the mobile terminal comprising:a transceiver configured to:
send a service request message to a first wireless communication network element via a second wireless communications network, the request message requesting a service from the second wireless communications network, and
receive service from the first wireless communication network without requiring the mobile terminal to perform an access control procedure with the second wireless communications network.

US Pat. No. 9,560,521

SERVICE IN WLAN INTER-WORKING, ADDRESS MANAGEMENT SYSTEM, AND METHOD

Wi-Fi One, LLC, Plano, T...

11. A method for a mobile terminal associated with a home communication network, the method comprising:
sending, by a transmitter, a service request message to a home communication network element via a second different communications
network, the request message requesting a service from the second communications network and including a service request identifier
and address request,

receiving, by a receiver, a service authorization message from the home network authorizing the mobile terminal to receive
the requested service from the second communications network and including address information for the mobile terminal,

wherein the address information is received without requiring the mobile terminal to perform an access control procedure with
the second communications network.

US Pat. No. 10,142,149

METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL AREA NETWORK SYSTEM

WI-FI ONE, LLC, Plano, T...

1. An apparatus, comprising:at least one processor;
at least one memory including computer program code, the memory and the computer program code configured to, working with the processor, cause the apparatus to perform at least the following:
receive a data frame, the data frame comprising:
a legacy signal field including a first symbol that is mapped onto a first binary phase shift keying (BPSK) constellation;
a Very High Throughput Signal (VHT-SIG) field including a second symbol and a third symbol, the second symbol being mapped onto the first BPSK constellation, and the third symbol being mapped onto a second BPSK constellation, and the second BSPK constellation being rotated by 90° counter-clockwise relative to the first BPSK constellation; and
wherein the second symbol includes an indicator indicating Single User-Multiple Input Multiple Output (SU-MIMO) transmission or multi user-MIMO (MU-MIMO) transmission, and the third symbol includes a cyclic redundancy check (CRC) for the second symbol and, at least a portion of, the third symbol.

US Pat. No. 10,038,580

MULTI-CARRIER SIGNAL TRANSMITTER AND MULTI-CARRIER SIGNAL RECEIVER

Wi-Fi One, LLC, Plano, T...

1. A multi-carrier signal transmission apparatus for transmitting a transmission symbol stream including a modulated arrangement of information for synchronizing a transmission signal and data information as a multi-carrier signal in a radio transmission system, the apparatus comprising:a processing device and a memory including instructions which, when executed by the processing device, control
selectively expanding, from a modulated symbol stream of the information for synchronizing the transmission signal and the data information, the information for synchronizing the transmission signal symmetrically on a frequency axis, to obtain an expanded transmission symbol stream; and
transmitting an output transmission signal corresponding to the expanded transmission symbol stream.

US Pat. No. 9,647,856

TRANSMISSION APPARATUS AND TRANSMISSION METHOD

Wi-Fi One, LLC, Plano, T...

1. A radio transmission apparatus for a radio station, comprising:
a first modulation signal generator;
a second modulation signal generator;
control circuitry configured to generate information indicating at least two different multiplexed modulation streams are
to be transmitted in a same frequency band at the same time via first and second antennas, respectively; and

wherein the first and second modulation signal generators are configured, based on the generated information, to respectively
generate a first Orthogonal Frequency Division Multiplexed (OFDM) modulation signal and a second OFDM modulation signal which
include different information from each other for transmission in the same frequency band at the same time via first and second
antennas, respectively,

wherein the first and second OFDM modulation signals each contains information indicating a number of modulation signals multiplexed
and transmitted in the same frequency band at the same time, the number of modulation signals being at least two.

US Pat. No. 9,628,300

METHOD AND SIGNAL GENERATING APPARATUS FOR GENERATING MODULATION SIGNALS

Wi-Fi One, LLC, Plano, T...

1. A method of transmitting modulation signals, the method comprising:
generating a plurality of modulation signals each of which is to be transmitted from a different one of a plurality of antennas,
wherein each modulation signal includes a pilot symbol sequence and/or a pilot subcarrier including a plurality of pilot symbols
used for demodulation;

inserting each of the pilot symbol sequences and/or pilot subcarriers at a same temporal point in each modulation signal,
wherein the pilot symbol sequences and/or pilot subcarriers are orthogonal to each other, each pilot symbol having a non-zero
amplitude,

a quantity of the plurality of pilot symbols in each pilot symbol sequence and/or pilot subcarrier being greater than a quantity
of the plurality of modulation signals to be transmitted; and

transmitting in an identical frequency band the plurality of modulation signals, each including different transmission data
and one of the pilot symbol sequences and/or pilot subcarriers, from the plurality of antennas.

US Pat. No. 10,003,443

METHODS AND APPARATUS FOR TRANSMITTING MODULATION SIGNALS

Wi-Fi One, LLC, Plano, T...

1. A method of transmitting modulation signals, the method comprising:generating a plurality of modulation signals, each of the plurality of modulation signals including a pilot symbol sequence having a plurality of pilot symbols;
inserting each pilot symbol sequence at a same temporal point in each modulation signal, each pilot symbol in the pilot symbol sequence having a non-zero amplitude,
a quantity of the plurality of pilot symbols in each pilot symbol sequence being greater than or equal to a quantity of the plurality of modulation signals to be transmitted; and
transmitting in an identical frequency band the plurality of modulation signals, each of the plurality of modulation signals including transmission data and one of the pilot symbol sequences, from a plurality of antennas.

US Pat. No. 10,511,961

SERVICE IN WLAN INTER-WORKING, ADDRESS MANAGEMENT SYSTEM, AND METHOD

Wi-Fi One, LLC, Dallas, ...

1. A method comprising:sending, from a mobile terminal, a tunneling setup request message to a network element of a first wireless communications network via a second wireless communications network, the tunneling setup request message requesting a service from the second wireless communications network, and;
receiving, by the mobile terminal, a tunneling setup response message from the network element of the first wireless communications network via the second wireless communications network, the tunneling setup response message comprising address information for the mobile terminal and service parameters for a tunnel,
wherein, when the mobile terminal is engaged in an active session prior to sending the tunneling setup request message, the address information comprises a same address previously allocated to the mobile terminal for the active session.

US Pat. No. 10,492,199

TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND COMMUNICATION SYSTEM FOR FORMATTING DATA

WI-FI ONE, LLC, Plano, T...

1. A transmitting apparatus comprising circuitry configured to:generate a transmission time slot based on transmission data;
generate a frame including:
a series of n (integer equal to or greater than 1) time slots, each time slot of the series of n time slots including an effective symbol period, and at least one time slot of the series of n time slots further including a guard period; and
a frame guard period added to the series of n time slots to suppress a frame loss due to interference, wherein the length of the frame guard period is longer than a length of the guard period in the at least one time slot; and
transmit the generated frame as a radio signal.

US Pat. No. 10,341,071

RADIO TRANSMISSION APPARATUS AND METHODS

Wi-Fi One, LLC, Dallas, ...

1. A radio transmission apparatus comprising:a first antenna and a second antenna;
circuitry configured, based on information associated with an estimated communications channel condition, to:
generate a single modulation signal or a plurality of modulation signals based on the estimated communications channel condition information, and
transmit the single modulation signal from the first antenna or transmit the plurality of modulation signals which include different information from each other over an identical frequency band from the first antenna and the second antenna at an identical temporal point; and
wherein the single modulation signal and the plurality of modulation signals contain parameter information indicating a number of modulation signals transmitted at the same time.

US Pat. No. 10,291,454

PILOT PATTERN DESIGN FOR A STTD SCHEME IN AN OFDM SYSTEM

Wi-Fi One, LLC, Plano, T...

1. An apparatus comprising:a transmitter adapted to transmit data symbols and pilot symbols in an OFDM transmission system, the transmitter configured to:
generate said data symbols and said pilot symbols; and
transmit said data symbols and pilot symbols using a plurality of subcarriers of said OFDM transmission system, wherein
said generating said pilot symbols includes generating a first type pilot symbol and a second type pilot symbol being orthogonal to said first type pilot symbol so that a pilot symbol pattern in a frequency dimension comprises at least said first type pilot symbol to be transmitted using a first subcarrier and second type pilot symbol to be transmitted using a second subcarrier, and
said pilot symbol pattern has a different pattern in a time dimension from a subsequent pilot symbol pattern.

US Pat. No. 10,243,626

TRANSMISSION METHOD AND TRANSMISSION APPARATUS

Wi-Fi One, LLC, Plano, T...

1. A transmission apparatus comprising:processing circuitry to:
generate a first data sequence representing first data or a second data sequence representing second data different from the first data;
select the first data sequence as an output data sequence;
determine a modulation scheme from a plurality of modulation schemes; and
modulate the output data sequence with the determined modulation scheme, and
transmission circuitry to transmit the modulated output data sequence,
wherein a first time interval associated with selecting the first data sequence for the output data sequence is longer than a second time interval associated with determining the determined modulation scheme.

US Pat. No. 10,270,574

TRANSMISSION SIGNAL GENERATION APPARATUS, TRANSMISSION SIGNAL GENERATION METHOD, RECEPTION SIGNAL APPARATUS, AND RECEPTION SIGNAL METHOD

Wi-Fi One, LLC, Plano, T...

1. A transmission apparatus comprising:electronic circuitry to:
map a first stream of input data to first complex symbols in serial format;
convert the first complex symbols in serial format into first complex symbols in parallel format;
perform an inverse Fourier transform on the first complex symbols in parallel format to form first Orthogonal Frequency Division Multiplexed (OFDM) signals associated with multiple subcarriers;
transmit the first OFDM signals over the multiple subcarriers in a same frequency band over a same time period that includes a same set of time slots;
transmit first pilot information on a first one of a plurality of pilot subcarriers during the same set of time slots;
transmit second pilot information on a second one of a plurality of pilot subcarriers during the same set of time slots, the second pilot information being different from the first pilot information;
map a second stream of input data to second complex symbols in serial format;
convert the second complex symbols in serial format into second complex symbols in parallel format;
perform an inverse Fourier transform on the second complex symbols in parallel format to form second OFDM signals associated with the multiple subcarriers;
transmit the second OFDM signals over the multiple subcarriers in the same frequency band over the same time period that includes the same set of time slots,
transmit the first pilot information on the second pilot subcarrier during the same set of time slots; and
transmit the second pilot information on one of the plurality of pilot subcarriers during the same set of time slots.

US Pat. No. 10,498,571

TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD

Wi-Fi One, LLC, Dallas, ...

1. A radio communications apparatus comprising circuitry configured to:select a first modulation scheme from a plurality of modulation schemes based on a communication situation;
generate a first symbol using the selected first modulation scheme, the first symbol comprising a first quadrature baseband signal;
generate a second symbol comprising a pilot symbol using a phase shift keying (PSK) modulation scheme, the second symbol comprising a second quadrature baseband signal; and
transmit a data signal comprising the first symbol and the second symbol.

US Pat. No. 9,525,575

TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD

Wi-Fi One, LLC, Plano, T...

24. A reception apparatus comprising:
a receiver to receive a modulation signal transmitted from a transmission apparatus;
a transmission path estimator that extracts a second symbol from the received modulation signal and estimates transmission
path of the modulation signal using the second symbol; and

a detector that outputs a received data signal from a first symbol sequence included in the modulation signal, using transmission
path estimation, wherein

the modulation signal includes:
at least one second symbol, generated using a phase shift keying (PSK) modulation scheme, inserted in a first symbol sequence
generated using a modulation scheme selected from a plurality of modulation scheme.