US Pat. No. 9,310,198

THREE-DIMENSIONAL LOCATION OF TARGET LAND AREA BY MERGING IMAGES CAPTURED BY TWO SATELLITE-BASED SENSORS

AIRBUS DS SAS, Elancourt...

1. A method run on a processor for locating a target land area (ZC) three-dimensionally by means of an optical sensor (CO)
and a radar sensor (CR) carried respectively in satellites (STO, STR), comprising measuring the positions (pIO, pIR) of the satellites when the sensors point at land areas, wherein it comprises measuring a sight direction (uIO) of the optical sensor and capturing an image (IO) of a land area (ZTIO) for each of the measured positions (pIO) of the optical sensor (CO), measuring the distance (dIR) between a land area (ZTIR) and the radar sensor (CR) and capturing an image (IR) of the land area (ZTIR) for each of the measured positions (pIR) of the radar sensor (CR), comparing the images (IO) captured by the optical sensor (CO) and the images (IR) captured by
the radar sensor (CR), matching the images (IO, IR) of land areas (ZTIO, ZTIR) captured by the optical and radar sensors and covering common land areas, and determining the distance (?) between the target
land area selected from the common land areas and the optical sensor as a function of the positions (pO, pR) of the sensors, the distance (dR) between the target land area and the radar sensor, and the sight direction (uO) of the optical sensor, which are associated with the images captured by the optical and radar sensors covering the target
land area.

US Pat. No. 9,756,577

METHOD FOR DEFINING PARAMETER VALUES FOR CONTROLLING THE TRANSMISSION POWER OF A PIECE OF USER EQUIPMENT

AIRBUS DS SAS, Elancourt...

1. A method for defining at least one parameter value for controlling a transmission power of a set of pieces of user equipment-served
by a cell defined by a telecommunication cellular network base station, the method comprising, for the base station:
receiving, from the set of pieces of user equipment located in the cell defined by the base station, a set of attenuation
values comprising, respectively for each piece of user equipment, an attenuation value of a signal transmitted by the base
station and received by the piece of user equipment and, if the piece of user equipment is also located in at least one non-serving
cell, an attenuation value of a signal transmitted by a base station of the non-serving cell and received by the piece of
user equipment;

determining, using the set of attenuation values received, a value of at least one transmission power control parameter (?,
P0); and

sending to the set of pieces of user equipment served by the cell defined by the base station, the determined value of the
control parameter (?, P0), to adapt the transmission power of the set of pieces of user equipment,
wherein the determining comprises:
selecting a maximum attenuation value PLMAX from amongst a set of attenuation values of at least one signal transmitted the base station, and received by each piece of
user equipment served by the base station;

calculating, for each piece of user equipment served by the base station, a difference or differences between the attenuation
value of a signal transmitted by each of the base stations for non-serving cells of said piece of user equipment and which
are received by said piece of user equipment and the attenuation value of a signal transmitted by the base station and received
by said piece of user equipment;

selecting a minimum ?PLMIN from amongst the values of the differences calculated for all pieces of user equipment served by the base station;

calculating a ratio SINRMIN in accordance with the formula SINRMIN=SINR0+?PLMIN, where SINR0 is a predetermined constant;

calculating a value of a first transmission power control parameter ? for pieces of user equipment served by the base station
in accordance with the formula:

?=1?(SINRMIN?SINRMAX)/(PLMIN??·PLMAX),

where ? is a predetermined known correction coefficient for the base station and where SINRMAX and PLMIN are predetermined constants, and

calculating a value of a second transmission power control parameter P0 for pieces of user equipment served by the base station in accordance with the formula:

P0=SINRMIN+(1??)PLMAX+Nthermal,

where Nthermal is a predetermined constant.

US Pat. No. 9,503,880

METHOD FOR MANAGING THE MOBILITY OF A NODE

AIRBUS DS SAS, Elancourt...

1. A method for managing the mobility of a mobile node in a plurality of telecommunications networks, said plurality of telecommunications
networks comprising at least a first telecommunications network and a second telecommunications network, said mobile node
including
a memory area, in which a set of data concerning the mobility of the mobile node in the plurality of telecommunications networks
is stored;

a first module configured to manage the mobility of said mobile node configured to establish through the first telecommunications
network, from at least one mobility data, a mobility session with a attach agent, and,

a second module configured to manage the mobility of said mobile node, configured to establish through the second telecommunications
network, from at least one mobility data, a mobility session with said attach agent, wherein the first module is different
than the second module, the method comprising:

accessing by the first module the set of mobility data stored in the memory area, and
obtaining, by the second module, from the first module, at least one mobility data from the set of data that is accessible
by the first module.

US Pat. No. 9,088,060

MICROWAVE TRANSITION DEVICE BETWEEN A STRIP LINE AND A RECTANGULAR WAVEGUIDE WHERE A METALLIC LINK BRIDGES THE WAVEGUIDE AND A MODE CONVERTER

AIRBUS DS SAS, Elancourt...

1. A transition device comprising a mode transformer between a conductive strip line integrated into a printed circuit board,
and a rectangular waveguide, characterized in that the board comprises a housing containing the waveguide having a large sidewall
coplanar to the strip line and another large sidewall fixed onto a portion of a metallic layer of the board at a bottom of
the housing, and the device comprises a gap bridged by a linking metallic element and located between the mode transformer
and the waveguide.

US Pat. No. 9,750,058

DIRECT MODE COMMUNICATION IN A WIDEBAND RADIO COMMUNICATION SYSTEM

AIRBUS DS SAS, Elancourt...

1. A method for setting a direct mode communication for terminals of a given direct mode communication group in at least one
current cell of a wide band radiocommunication system comprising a plurality of cells, each cell of the wide band radiocommunication
system comprising a base station, the method comprising:
transmitting a request for setting a direct mode communication channel to a current base station of a current cell by a terminal
of the direct mode communication group recorded at said base station, the request comprising an identity of the direct mode
communication group and quality of service parameters specific to the requested direct mode communication channel;

after receiving the request by the current base station, setting a direct mode communication channel by allocating free resource
blocks selected from a set of resource blocks allocated to the current cell, as a function of the quality of service parameters;

transmitting a channel setting message, transmitted by the current base station to the terminals recorded at said current
base station, the message comprising the identity of the direct mode communication group and setting parameters of the set
channel, and

after receiving the setting message by the terminals of the group which are recorded at the current base station, accessing
the direct mode communication channel by each of said terminals from the setting parameters transmitted for directly communicating
with the other terminals of the group, wherein the set direct mode communication channel is undersized if a number of the
allocated resource blocks does not correspond to the requested quality of service parameters.

US Pat. No. 9,391,740

METHOD FOR DEMODULATING A SIGNAL

AIRBUS DS SAS, Elancourt...

1. A method for demodulating a signal in a receiver comprising at least two antennas each receiving a signal transmitted through
an associated radio propagation channel, the signals received corresponding to a same emitted signal comprising time and frequency
distributed symbol frames in which driver symbols are known to the receiver, said method comprising:
noise whitening to form two combined signals that have noise components which are separate;
normalising the noise components of the two combined signals in order to form two signals (r?, r?) that have noise components
which are separate and have equal average standards;

performing signal demodulation with a maximum combination of a signal-to-noise ratio on the two signals (r?, r?), the noise
components of which are separate and which have equal average standards,

wherein the noise whitening to form the two combined signals comprises:
weighting each of the signals received with respective first weighting vectors associated with a respective antenna of the
receiver, the signal associated with the first antenna being weighted by a weighting vector w1 and the signal associated with the second antenna being weighted by a weighting vector w2,

combining the weighted received signals in order to form a first combined signal (c1),

weighting a reference signal comprising said driver symbols with another weighting vector,
comparing the first combined signal and the weighted reference signal in order to form an error,
determining the weighting vectors (w1; w2) using a maximum a posteriori criterion by maximising a probability of occurring of said weighting vectors (w1; w2) conditionally with the error obtained,

weighting each signal received with: second weighting vectors (w*2, ?w*1), the signal received on the first antenna being weighted by a conjugate of a complex vector w2 and the signal received on the second antenna being weighted by an opposite of the conjugate of a complex vector w1,

combining signals received weighted by the second weighting vectors in order to form a second combined signal (c2),

wherein respective coefficients of the propagation channel corresponding to a useful signal associated with the respective
antenna of the receiver and used in performing signal demodulation with the maximum combination of the signal-to-noise ratio
on the two signals (r?, r?), obtained at an end of the noise-whitening step, are determined using the maximum a posteriori
criterion by maximising the probability of the occurring of the channel conditionally with the error present on the one hand
in the first combined signal (c1) and on the other hand in the second combined signal (c2), by taking into account the propagation channel seen in the first combined signal (c1) and in the second combined signal (c2).

US Pat. No. 9,433,012

METHOD FOR ENABLING RADIOELECTRIC COEXISTENCE BETWEEN TWO PMR DEVICES OF WHICH ONE IS A NARROWBAND TYPE AND THE OTHER IS A BROADBAND TYPE

AIRBUS DS SAS, Elancourt...

1. A method for enabling radioelectric coexistence between two devices based on personal mobile radio or Private Mobile Radio
(PMR) technology, of which one is a narrow band device and the other is a broadband device, and each device interacts via
a radioelectric link with respective base stations connected to corresponding control units for the radio resource of their
respective networks, the method comprising:
detecting the presence of a narrow band radioelectric device in the vicinity of the broadband device;
transmitting a message on the broadband network directed to the control unit of the broadband network to indicate the presence
of a possible narrow band device close to the broadband device; and

assigning, by the control unit of the broadband network, new frequency blocks for uplinks, only in predefined allocated periods.

US Pat. No. 9,847,867

METHOD FOR SELECTING AN HD-FDD DUPLEXING MODEL

AIRBUS DS SAS, Elancourt...

1. A method of selecting a, Half Duplex Frequency Division Duplexing (HD-FDD) model for wireless communication entities comprising
a terminal and a radio communication network, wherein:
wireless communication between the radio communication network and the terminal is carried out according to a selectable HD-FDD
model;

the network or the terminal selects an HD-FDD model from among a set of models based on information from the terminal or from
the network, respectively, according to selection rules known by said network and said terminal;

information identifying the HD-FDD model selected by one entity is derived from information related to either an initial RACH
message or to a random access response;

sets of preamble sequence numbers, used by the terminal for sending an initial RACH message to the radio communication network,
are separated into subsets respectively associated with the HD-FDD models;

the preamble sequence number of an initial RACH message is used to indicate to the radio communication network both a random
access request by the terminal and an associated HD-FDD model selected by said terminal for wireless communication with the
radio communication network; and

the radio communication network derives the associated HD-FDD model from the received preamble sequence number.

US Pat. No. 9,661,578

METHOD FOR ESTABLISHING A STRATEGY FOR SAVING THE ENERGY OF MOBILE TERMINAL BATTERIES

AIRBUS DS SAS, Elancourt...

1. A method for establishing a strategy for saving energy of a battery of a mobile terminal belonging to a same user group,
so as to allow a private and/or professional mobile radio used of said terminals, the method comprising, the method, for each
terminal of said group, comprising
determining a state of charge of the battery:
when the battery is fully charged, determining an operational mode of a RRC (Radio Resource Control) layer of the terminal;
when the operational mode of the RRC layer of the terminal is in idle state, then:
carrying out a search for all the long-range, or short-range networks available;
when the operational mode of the RRC layer of the terminal is connected, then:
sending data messages to the other terminals belonging to the same user group;
updating a MIIS (Media Independent Information Services) server via notifications of information relating to the availability
of neighbouring networks which is collected in a local database of said terminal;

when a more suitable network has been detected, launching a Handover procedure initiated either by the network, or directly
by a controller of the terminal;

when the battery is half-charged, determining the operational mode of the RRC layer of the terminal:
when the operational mode of the RRC layer of the terminal is in idle state, then:
carrying out a search for all the long-range networks available;
when the operational mode of the RRC layer of the terminal is connected, then:
sending data messages to all the terminals;
determining all the long-range networks available in order to update a database server;
carrying out a Handover procedure if the terminal deems it to be necessary;
when the battery is insufficiently charged, determining the operational mode of the RRC layer of the terminal:
when the operational mode of the RRC layer of the terminal is in idle state, then:
determining whether a cell reselection has occurred;
when a cell reselection has occurred, requiring the MIIS server;
sending the position of the terminal to the base station to which it is connected, in order to determine which networks are
available in the vicinity thereof;

determining whether it is possible to carry out a cell reselection procedure for one of the most suitable networks listed
by the MIIS server:

when a cell reselection procedure can be carried out, carrying out the reselection procedure;
when a cell reselection procedure cannot be carried out, reiterating the reselection procedure with the most remaining suitable
networks, which have been listed;

when no attempt for reselecting networks present in the list has been successful, carrying out a network scanning, similar
to the one carried out when the battery is fully charged;

when the operational mode of the RRC layer of the terminal is connected, then:
no research for neighbouring networks is carried out any longer, and determining whether a cell reselection has been carried
out:

when a cell reselection has been carried out, requiring the MIIS server;
sending data messages to the other terminals;
requiring the available networks in proximity of the position of the MIIS server from the latter;
determining whether it is possible to carry out a Handover procedure for one of the two or three most suitable networks, which
have been listed by the MIIS database, for the terminal to be able to be connected thereto:

when a Handover procedure is possible, carrying out by the controller of the terminal a Handover procedure;
when a Handover procedure is not possible, reiterating by the controller of the terminal the Handover procedure with the remaining
networks from the list;

when no Handover attempt has been successful with one of the networks from the list, directly carrying out by the controller
of the terminal a network scanning.

US Pat. No. 9,496,903

METHOD FOR REDUCING THE CREST FACTOR WIDE BAND SIGNAL

AIRBUS DS SAS, Elancourt...

1. A method for reducing a power crest factor of a wideband communication signal generated by a generation module of a communications
emitting equipment, the wideband signal comprising N narrowband signals, N being a natural integer greater than or equal to
two, the method comprising:
calculating, by a phase shift determination module, a different phase shift value for each of the N narrowband signals; and
amplifying, by a power amplifier and/or a power amplification simulator, the power of said wideband signal for wireless transmission,
wherein, the generation module shifts the respective phases of the narrowband signals in accordance with the calculated phase
shift values in order to reduce said power crest factor, and

wherein the calculation of the phase shift values is based on a difference between a value of the wideband signal after being
amplified by said power amplifier and/or said power amplification simulator and a value of the wideband signal generated by
the generation module prior to amplification.

US Pat. No. 9,130,715

MATCHING SUBCARRIES POWER IN A BROADBAND NETWORK COLLOCATED WITH A NARROWBAND NETWORK

AIRBUS DS SAS, Elancourt...

1. A method in a mobile device (MBBB) for acquiring first subbands (RBBB) in at least a broadband portion of a broad frequency band, the method comprising:
dividing a reference signal (RS1) generated in the mobile device into generated subsequences (SRSGn) which are associated respectively with the first subbands
(RBBB) and second subbands (RBNB) of the broadband portion of the broad frequency band of which a width of the first and second subbands (RBBB, RBNB) is deduced from a number of subbands (NRB) in a message (PBCH) supported by first and second downlink frames (TP1DL, TP2DL) transmitted by a first base station (BSBB);
detecting resource elements included at predetermined positions in the first and second subbands (RBBB, RBNB) of the broadband portion of the broad frequency band for each of the first and second downlink frames (TP1DL, TP2DL) transmitted by the first base station (BSBB);grouping the resource elements respectively detected in the first and second subbands (RBBB, RBNB) of the broadband portion of the broad frequency band into detected subsequences (SRSDn);determining coefficients (Cn) which are representative of correlations between the generated subsequences (SRSGn) and the
detected subsequences (SRSDn) respectively associated with the first and second subbands (RBBB, RBNB) of the broadband portion of the broad frequency band; andacquiring both positions of the first subbands (RBBB) in the broadband portion of the broad frequency band for associated ones of the coefficients (Cn) which exceed a predetermined
threshold and also positions of the second subbands (RBNB) in the broadband portion of the broad frequency band for associated ones of the coefficients (Cn) which are at most equal
to the predetermined threshold.

US Pat. No. 9,788,265

METHOD OF MANAGING ACCESS OF AN UPLINK CHANNEL IN A TELECOMMUNICATION NETWORK INFRASTRUCTURE, COMPUTER PROGRAM, AND ELECTRONIC MODULE FOR IMPLEMENTING SAID METHOD

AIRBUS DS SAS, Elancourt...

1. A method for managing the accessibility of an uplink channel, of a control channel and/or data channel type, for a communications
network infrastructure with a plurality of pieces of radio equipment, in which the accessibility to said uplink channel is
transmitted on a downlink channel of said network infrastructure to said pieces of radio equipment by means of status symbols
indicating if access to said uplink channel is authorised during a timeslot, the method comprising:
receiving during a first timeslot a message on the uplink channel coming from a piece of radio equipment, said message comprising
an indicator in order to indicate a length type of said message followed, when said message is of the long type, by a header
block,

reading of said indicator indicating the type of length and, when said message is of the long type:
modifying a status symbol of a second timeslot consecutive to the first timeslot to indicate a busy state;
determining the length of said message received using a processing of the header block;
determining a number Nb of total timeslots corresponding to said determined length;
and if the number Nb of total timeslots is greater than or equal to 3:
modifying a status symbol of the Nb?2 timeslots consecutive to the second timeslot to indicate a busy state.

US Pat. No. 9,736,191

DIGITAL RADIO-COMMUNICATION SYSTEM FOR CHANGING A NARROW-BAND INFRASTRUCTURE AND TERMINALS INTO A WIDE-BAND INFRASTRUCTURE AND TERMINALS

AIRBUS DS SAS, Elancourt...

1. A radio communication system for Push-To-Talk (PTT) type applications comprising:
a first, narrowband PMR technology terminal configured to connect via a radio electric interface to a narrowband network infrastructure
which provides an access, via a PTT server, to narrowband PTT resources and applications; and

a second, broadband technology terminal configured to connect connecting via the radio electric interface to an IP-WAN network
which provides access, via a broadband data server, to PTT resources and applications;

wherein, the second terminal includes a PTT over IP-WAN client application, configured to establish an IP connection, via
an interface, between the second terminal and a PTT over IP-WAN server allowing said second terminal to access the narrowband
PTT resources and applications and to establish a communication channel with the first terminal;

wherein, the PTT over the IP-WAN server is configured to connect, via an interface, to the PTT server of the narrowband network
infrastructure and to another PTT over IP-WAN server; and,

wherein the second terminal is a cellular telephone provided with a PTT over IP-WAN client application which comprises a PoC
client software, said PoC client software being associated with a first software component providing access to narrowband
PTT services or applications and being further associated with a second software component providing access to the broadband
PTT resources and applications,

wherein the PTT server over IP-WAN includes a kernel based on a PoC OMA protocol and equipped with client software; and
wherein the PTT server over IP-WAN includes a software component for achieving the necessary adaptation for the operation
between an OMA client/server and P25 client/server, in order to achieve all common communication.

US Pat. No. 9,621,195

FREQUENCY BAND SWITCHING RADIO FRONT END

AIRBUS DS SAS, Elancourt...

1. A full duplex microwave front end for the communication system of an unmanned aerial vehicle, comprising:
a transmitter module capable of selecting an antenna of a plurality of antennas that is most appropriate at a given time to
emit a modulated signal or receive a reception signal, or both to emit the modulated signal and receive the reception signal;

a filter module, capable of insulating an emission function from a reception function in order to emit the modulated signal
or insulating the reception function from the emission function in order to receive the reception signal;

an amplifier module, capable of amplifying the reception signal received in order to demodulate it, and capable of amplifying
a power of the modulated signal intended to be emitted, and

a switch module,
wherein the filter module comprises at least one first filter that insulates the reception signal on a first frequency band
and at least one second filter that insulates the modulated signal on a second frequency band when the front-end is in a direct
communication link mode,

wherein said first filter insulates the modulated signal on the first frequency band and said second filter insulates the
reception signal on the second frequency band when the front-end is in a relayed communication link mode,

wherein the switch module is capable of switching the first and second frequency bands used for the reception function and
the emission function, respectively, when switching from the direct communication link mode to the relayed communication link
mode.

US Pat. No. 9,755,769

METHOD FOR ESTIMATING A RADIOELECTRIC PROPAGATION CHANNEL

AIRBUS DS SAS, Elancourt...

1. A method for estimating a radio propagation channel between a transmitter and a receiver, where the transmitter transmits
a signal including frames each of which uses Nf frequency subcarriers over each of which Nt symbols are transmitted, where among all the symbols, certain pilot symbols, are known to the receiver, where the signal is
synchronised by the receiver from a timing synchronisation position and a frequency synchronisation position, wherein a temporal
profile of the channel is symmetrical and centred around an effective central timing position ?mean different from the timing synchronisation position, wherein a frequency profile of the channel is symmetrical and centred
around an effective central frequency position fmean different from the frequency synchronisation position, and wherein the method, implemented by the receiver, comprises:
determining an intermediate frequency covariance matrix M2f representing frequency variations of the channel, due to a theoretical temporal profile of the channel, which is symmetrical
and centred on the timing synchronisation position, wherein the theoretical temporal profile of the channel is obtained from
the channel's temporal profile translated to a time of ?mean so as to be symmetrical around the timing synchronisation position;

determining an intermediate temporal covariance matrix M2t representing temporal variations of the channel, due to a theoretical frequency profile of the channel, which is symmetrical
and centred on the frequency synchronisation position, wherein the theoretical frequency profile of the channel is obtained
from the channel's frequency profile translated to a frequency of fmean so as to be symmetrical around the frequency synchronisation position;

calculating an intermediate global covariance matrix M2 according to the Kronecker product: M2=M2tM2f;

calculating a matrix E? according to the relationship E?=E·TH, where T=TtTf and in which E? is a diagonal matrix including the pilot symbols transmitted in a frame at the positions of the pilot symbols,
wherein the other symbols are zero, Tf is a diagonal centring matrix (Nf, Nf) defined by

and Tt is a diagonal centring matrix (Nt, Nt) defined by

calculating a column vector representing an intermediate channel C? which minimises the relationship
where R is a column vector of dimension (Nt×Nf) consisting of the received symbols, and;
estimating the propagation channel according to the relationship C=TH·C?, from calculated vector C?.

US Pat. No. 9,918,310

VERSATILE RADIO RECEIVER ARCHITECTURE

AIRBUS DS SAS, Elancourt...

1. An RF receiver comprising:
a down-converting and sampling circuit adapted to:
receive an RF input signal having a signal band comprising a plurality of sub-bands, each sub-band comprising a plurality
of channels separated by frequency channel spaces;

perform frequency transposition and sampling at a sampling frequency to generate a discrete time signal in which a selected
one of the plurality of sub-bands is brought from an initial frequency band to a lower frequency band centered on a first
central frequency, wherein the first central frequency of the lower frequency band remains the same irrespective of which
of the plurality of sub-bands is selected, the lower frequency band having a bandwidth equal to at least the sum of the channel
spaces of a sub-band, and the sampling frequency remaining at a same level for all channels of each selected sub-band; and

a discrete time filter receiving the discrete time signal and having a variable pass band and a variable central frequency
controllable to correspond to a second central frequency, different than the first central frequency of the lower frequency
band, of a channel to be selected among the plurality of channels of the selected sub-band in order to select any one of said
plurality of channels.

US Pat. No. 9,942,936

QUICK-START METHOD, TERMINAL AND SYSTEM FOR RADIO COMMUNICATION

AIRBUS DS SAS, Elancourt...

1. A mobile communication terminal, comprising:a narrow-band communication module,
a broad-band communication module,
a first operating module,
a second operating module, and
a management module of the first operating module and the second operating module,
said first operating module being configured to establish a communication through a narrow-band communication network via said narrow-band communication module,
said second operating module being configured to establish a communication through said narrow-band communication network via the narrow-band communication module and to establish a communication through a broad-band communication network via said broad-band communication module,
wherein the first operating module includes a first operating system configured to execute instructions making it possible to establish a communication through the narrow-band communication network via the narrow-band communication module, and
wherein the first operating system includes a limited number of booting tasks so as to be operational within a time period of less than ten seconds after the booting of the terminal,
wherein the second operating module includes a second operating system configured to establish a communication through said narrow-band communication network via the narrow-band communication module and to establish a communication through the broad-band communication network via the broad-band communication module,
wherein the management module is configured to select the first operating module following a malfunction of the second operating system or when, the terminal including a battery, a battery level is below a predetermined threshold, or on the action of a user of said terminal.

US Pat. No. 9,941,913

FILTERING DEVICE FOR A PMR PORTABLE MOBILE TERMINAL, AND MOBILE TERMINAL

AIRBUS DS SAS, Elancourt...

1. A filter device designed to be connected to a portable mobile terminal compatible with a PMR (Private Mobile Radiocommunications) network with a wide frequency range in reception B1, the filter device comprising an attachment system to attach said filter to an external surface of a body of said mobile terminal, a first radiofrequency connector configured to cooperate with a radiofrequency connector on the mobile terminal, a first channel comprising a first filter to reduce interference in a first useful band Bu1, at least in reception in band B1, and a second radiofrequency connector configured to cooperate with a removable RF antenna to transmit or receive radiofrequency (RF) signals.

US Pat. No. 10,045,363

HD-FDD METHOD AND SYSTEM WITH NO OVERLAPPING BETWEEN DOWNLINK AND UPLINK SUBFRAMES

AIRBUS DS SAS, Elancourt...

1. A half-duplex (HD) frequency division duplexing (FDD) method for a wireless communication system having an uplink and downlink prioritization scheme for an HD-FDD type mobile communication terminal, the method comprising:communicating, by at least one base station (BS), with at least one of a plurality of mobile communication terminals of the wireless communication system;
sending, by the at least one base station, at least one allocation message to the at least one mobile communication terminal, dynamically when a transition occurs between a downlink (DL) sub-frame, labelled n, and an uplink (UL) sub-frame, labelled n+1, allocated for the communication between said mobile communication terminal and said base station;
receiving, by the at least one mobile communication terminal, the at least one allocation message, wherein the at least one allocation message includes one of a number A of symbols or a number B of symbols;
deducing, by the at least one mobile communication terminal, responsive to the number A of symbols being received, the number B of symbols and deducing, responsive to the number B of symbols being received, the number A of symbols; and
processing, by the at least one mobile communication terminal, the at least one allocation message, wherein the at least one allocation message dynamically causes, at the mobile communication terminal, the sub-frame n to be truncated by the number A of symbols and the sub-frame n+1 to be truncated by the number B of symbols, A and B being integers such that A+B=N and such that N, defined by an anticipated duration of an emission from the mobile communication terminal to its reception at the BS divided by an interstitial symbol duration, is equal to a number of symbols to be removed to avoid frame spanning between downlink and uplink.

US Pat. No. 10,057,130

D2HCP PROTOCOL IN AD HOC NETWORKS: MERGING OF SUB-NETWORKS AND ADDRESS CONFLICT RESOLUTION

AIRBUS DS SAS, Elancourt...

1. A method for detecting a merging situation of two ad-hoc sub-networks implementing a D2HCP addressing protocol, the first sub-network comprising a plurality of nodes and the second sub-network comprising a plurality of nodes, each node of each sub-network comprising a data set comprising an identifier of said node;identifiers of the known nodes of an authentication data set of said node;
an IP address associated with the identifier of each node referenced in the authentication data set;
at least one identifier of the sub-network to which said node belongs, the method comprising:
discovering a second node of the second sub-network by a first node of the first sub-network, by receiving by the first node a discovery data frame, transmitted by the second node for determining a situation requiring merging of both sub-networks;
exchanging setup data between the first node and the second node, comprising:
the identifiers of each node;
a size of each sub-network;
the identifier of each sub-network;
comparing the sizes of each sub-network enabling a master node and a slave node to be defined from the first and the second nodes, the slave node retrieving a set of identifiers of the nodes of the sub-network of the master node as well as the IP addresses associated with each of said identifiers, the determination of the slave node and the master node enabling the merging of both sub-networks in a single network to be setup.

US Pat. No. 10,051,589

SUSPENDING EMISSION OF A SIGNAL

AIRBUS DS SAS, Elancourt...

5. A communication device comprising:an emission suspension module that includes a buffer memory configured to store, during a predetermined suspension time interval, a plurality of data packets of a first signal so as to suspend an emission of the first signal emitted by the communication device over a first radio communication link of a first communication network such that a second device can receive a second signal over a second radio communication link of a second communication network during said predetermined suspension time interval, and
a first modem configured to emit said first signal over the first radio communication link,
wherein the emission suspension module is configured to detect a beginning of the predetermined suspension time interval, which results in a storage of the plurality of data packets in said buffer memory, and
wherein the communication device is a mobile relay node, said communication device further comprising a router configured to route data packets, which are emitted by one or more external devices to the communication device, to the emission suspension module.

US Pat. No. 10,433,303

METHOD AND SYSTEM FOR DETERMINING AN INTERVAL OF FREQUENCIES IN A TELECOMMUNICATIONS NETWORK

AIRBUS DS SAS, Elancourt...

1. A method for transmitting, by a user equipment, a signal to a base station in a telecommunication network, said method comprising:determining an interval of frequencies of transmission of the signal to be sent to the base station, said interval of frequencies lying in a predetermined frequency band on which the base station operates, said interval of frequencies based on a table of references comprising values of reduction of maximum power of transmission of a signal by the user equipment such that a power of the signal transmitted by the user equipment at a predefined off-band frequency is less than a predetermined maximum limit value of power, said interval of frequencies enabling a transmission with a minimum attenuation of power,
wherein the determining is performed by the user equipment, and
transmitting said signal by the user equipment to said base station in said interval of frequencies.

US Pat. No. 10,129,004

METHOD FOR ALLOCATING RESOURCES AND SYSTEM IMPLEMENTING SAID METHOD

AIRBUS DS SAS, Elancourt...

1. A method for allocating radio resources in a wide band radio communication network for uplink communications, the network being formed of cells each comprising at least one base station and terminals, the method comprising, during a connection of a first terminal to a first base station of a first cell of a group of cells formed of the first cell and cells adjacent thereto:performing reference signal quality measurements defined respectively for the terminals of the group of cells by each base station,
analyzing of an interference detected from the first terminal on the uplink communications of the terminals connected to the base stations of the group of cells, the analysis being carried out as a function of the reference signal quality measurements by each base station of the group of cells, and
allocating radio resources by the first base station for an uplink communication from the first terminal as a function of the analysis results on detection of interference from the first terminal on the uplink communications of the other terminals of the group of cells, the results coming from each cell of the group of cells,wherein the method further comprises during the connection of the first terminal to the first base station:defining first transmission rules of a first reference signal defined for the first terminal, the first transmission rules being distinct from the transmission rules of reference signals of other terminals connected to the first base station in order that the reference signals of all the terminals connected to the first base station are orthogonal to each other, and
transmitting the first transmission rules defined to the other base stations of the group of cells.

US Pat. No. 10,244,009

FAST METHOD OF INITIALIZING A CALL FOR AN APPLICATION OF PTT TYPE ON AN IP-WAN CELLULAR NETWORK

AIRBUS DS SAS, Elancourt...

1. A method for initialising a call for a mobile terminal comprising applications of the push-to-talk (PTT) type for a PTT communication with a PTT server on an IP-WAN cellular network, said mobile terminal having both a PTT client and an IP-WAN modem that form a PTT over cellular (PoC) mobile terminal, said method comprising, for each user of said PoC mobile terminal connected to the IP-WAN modem intended to register for a group call:a step, which is triggered on starting up the IP-WAN modem, during which is performed a procedure for connecting to the IP-WAN cellular network;
a step in which, when the PTT client is active, and when the PTT client has obtained an IP address of the PTT server, the PTT client instigates a procedure for registering a session initiation protocol (SIP) with the PTT server on a default IP-WAN carrier;
a step in which, the PTT client proceeds to a procedure for affiliation to a call group with the PTT server on the default IP-WAN carrier;
a step in which, as soon as the procedure for affiliation to the call group is performed, an “INVITE” SIP procedure is executed to reserve RTP resources at an application level on a PTT server side and on the PTT client side, in such a way as to allow the establishment of the RTP session immediately after the procedure of affiliation of the PTT client to the group, wherein in order to perform the “INVITE” SIP procedure, the PTT client sends a “SIP INVITE” invitation message to the PTT server to request the initialisation of the RTP session for voice media, and wherein the RTP session is established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier on the IP-WAN cellular network to support the voice media for the PTT communication with said group, and
a step in which, after the RTP session has been established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier to support the voice media for the PTT communication with said group, the PTT client initiates a PTT request to the PTT server for establishing the PTT communication with said group over the IP-WAN cellular network, said step of initiating, by the PTT client, the PTT request to the PTT server being carried out without performing another “INVITE” SIP procedure and including a step of initializing the dedicated carrier on the IP-WAN cellular network.

US Pat. No. 10,318,869

DECISION-MAKING PROCESS FOR ELEMENTS IN A DISTRIBUTED NETWORK

AIRBUS DS SAS, Elancourt...

9. A system comprising a plurality of processing units provided with decision intelligence, with the processing units being connected together in a network, with each processing unit being configured as a decider processing unit in order to implement a decision-making process by propagation of a proposition in the network,wherein the decider processing unit is configured to:
a) determine a proposition upon reception of a request,
b) select a set voter processing units to analyse the proposition and present a response, the response comprising a confirmation of the proposition, a denial of the proposition, or a no opinion response,
c) define a percentage weighting for each voter or group of voters selected as such,
d) define a confirmation threshold as a percentage starting from which the proposition is considered as confirmed,
e) define a denial threshold as a percentage starting from which the proposition is considered as denied,
f) trigger a timer and define at least one processing time,
g) transmit said proposition with the processing time via the distributed network to all of the voters, and
h) during the processing time, according to the responses that the decider processing unit receives, the decider processing unit determines the confirmation response percentage and the denial response percentage, then confirms or denies the proposition by comparing the percentages determined as such with the confirmation and denial thresholds; at the end of the processing time, if no decision has been made, the decider retrieves all of the available responses and determines the confirmation response percentage and the denial response percentage, then confirms or denies the proposition by comparing the percentages determined as such with the confirmation and denial thresholds;
wherein each voter or group of voters determines its ability to respond to the proposition and implements its decision-making process if it considers that it can respond within the allotted time or otherwise emit a no opinion response, and/or
wherein the decider processing unit determines the confirmation response percentage and the denial response percentage by distributing the weighting as a percentage to each voter or group of voters according to their respective weighting as a percentage.