EP4078886A1 - Procede d'allocation de frequences d'emission de signaux radio entre une ou plusieurs entites de communication, permettant une reduction des interferences entre ces entites de communication utilisant le meme canal en frequence - Google Patents
Procede d'allocation de frequences d'emission de signaux radio entre une ou plusieurs entites de communication, permettant une reduction des interferences entre ces entites de communication utilisant le meme canal en frequenceInfo
- Publication number
- EP4078886A1 EP4078886A1 EP20848807.2A EP20848807A EP4078886A1 EP 4078886 A1 EP4078886 A1 EP 4078886A1 EP 20848807 A EP20848807 A EP 20848807A EP 4078886 A1 EP4078886 A1 EP 4078886A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- equipment
- radio signal
- terminal equipment
- frequency
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 62
- 230000008054 signal transmission Effects 0.000 title abstract description 4
- 230000009467 reduction Effects 0.000 title description 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 118
- 230000002452 interceptive effect Effects 0.000 claims abstract description 39
- 238000004590 computer program Methods 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000004364 calculation method Methods 0.000 abstract description 9
- 230000006870 function Effects 0.000 description 14
- 238000011084 recovery Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0069—Allocation based on distance or geographical location
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
Definitions
- TITLE Method for allocating radio signal transmission frequencies between one or more communication entities, allowing a reduction in interference between these communication entities using the same frequency channel
- the field of the invention is that of the allocation of radio signal transmission frequencies. More specifically, the invention relates to a technique for allocating transmission frequencies of radio signals between one or more communication entities allowing the reduction of interference.
- DFS Dynamic Frequency Selection
- DCA Dynamic Channel Assignment
- the DFS mechanism is a mechanism associated with Wi-Fi technologies, which assigns dedicated frequency channels to Wi-Fi so as not to interfere with radar systems operating in the same frequency bands.
- the DFS mechanism consists in selecting a frequency that does not interfere with radar systems operating in the same frequency band, such as for example the 5 GHz band.
- the DFS mechanism was developed in the normative document referenced 802. llh and published by I ⁇ EEE (Institute of Electrical and Electronics Engineers).
- the Wi-Fi device detects radar pulses which induce a blocking by a Wi-Fi access point of a transmission channel whose frequency is shared with the radar system at the origin of the emission of the pulses.
- the DCA mechanism is a mechanism relating to the allocation of frequency channels in a multicellular context.
- the DCA mechanism dynamically allocates frequency channels within a cell using frequency channels available in adjacent cells.
- the algorithm is based on the probability of blocking a frequency channel within a considered cell and in the adjacent cells making it possible to reallocate the frequencies of the channels in another cell.
- the calculation of this blocking probability within the considered cell is based on an assumption of frequency channel demands which would follow a Poisson law with a limited number of available frequency channels.
- frequency channel allocation techniques do not explicitly take into account the position of the terminal equipment and the antenna characteristics associated with them. In addition, these techniques consume significant computing power in order to be able to allocate the frequency channels as best as possible between the various terminal equipment items.
- the invention meets this need by proposing a method of communication between a communication equipment and at least a first terminal equipment according to a current frequency equal to a first transmission frequency of a radio signal, the communication method being implemented.
- the communication equipment implemented by the communication equipment and comprising the following steps:
- the invention further relates to a method of communication between a communication equipment and at least a first terminal equipment according to a current frequency equal to a first transmission frequency among several transmission frequencies of a radio signal, the method communication being implemented by the communication equipment.
- the process comprises the following steps:
- Such a method is an alternative to the frequency channel allocation techniques of the state of the art.
- the communication method is based on the selection of a single current transmission frequency using a so-called metric representative of an overlap of collection surfaces.
- the overlap metric evaluates an interference level associated with a spatial overlap of sensing surfaces of a first terminal equipment and of an interfering equipment for a transmission frequency of a radio signal.
- the proposed solution relates to the selection of a current transmission frequency of a radio signal to spatially dissociate adjacent terminal equipment using the same transmission frequency of a radio signal to communicate with the communication equipment, which makes it possible to optimize the frequency resource in a multi-user context.
- the proposed solution aims to limit multi-user interference and to allow an adaptation of an antenna gain in reception for each point-to-point communication, which limits single-frequency multi-user interference and contributes to reducing the radiated powers. .
- the proposed solution consists in selecting a current transmission frequency of a radio signal used to communicate between the communication equipment and at least one terminal equipment in order to avoid overlapping of the collection surfaces of the antennas of neighboring terminal equipment.
- An adjustment of a solid angle of a communication beam in reception is carried out using the transmission frequency of a radio signal which modifies the sensing surface of an antenna in reception.
- the solution described is based on the selection of the transmission frequency of a radio signal which makes it possible to generate a capture surface allowing the establishment of a communication between the communication equipment and the terminal equipment considered while limiting interference. space-frequency with antennas of neighboring terminal equipment.
- a third transmission frequency of the radio signal is selected and a radio signal is transmitted to the first terminal equipment at the current frequency and a radio signal is transmitted to the interfering equipment at the third frequency. emission different from the current frequency and possibly identical to the first frequency.
- the method further comprises: determination of the metric for another given frequency from among the several transmission frequencies, selection of another transmission frequency called another current frequency from among the several transmission frequencies of the radio signal as a function of the determined metric, transmission of a radio signal to the interfering equipment at the other current transmission frequency, and in which the transmission of a radio signal at the current frequency is carried out to the first terminal equipment
- the terminal equipment and the interfering equipment each communicate with the communication equipment according to a transmission frequency which is specific to them. This helps to reduce the risk of interference between the two terminal equipment.
- the overlap metric is further determined as a function of the relative geometric positions of the terminal equipment and of the interfering equipment (these relative positions defining a so-called fictitious geometric sensing surface).
- the overlap metric is a ratio of a fictitious collection surface to which the first terminal equipment and the interfering equipment belong to a half sum of the first collection surface and of the second collection surface. capture.
- the overlap metric is a ratio of a so-called fictitious capture area determined as a function of a geometric area associated with the geometric positions of the first terminal equipment and of the interfering equipment over a half sum of the first capture surface and the second capture surface respectively of the first terminal equipment and of the interfering equipment.
- the capture area of the first terminal equipment, or of the interfering equipment is determined as a function of a ratio of a value of a power of the radio signal received by the first terminal equipment. or by the interfering equipment, at the first transmission frequency of the radio signal, on a product of a value of a transmission power of the radio signal and of a parameter representative of the directivity of the radio signal transmitted by the communication equipment.
- the fictitious pick-up area is determined as a function of a geometric area, determined by means of geometric positions of the first terminal equipment and of the interfering equipment with respect to the communication equipment, and a fictitious return.
- This fictitious capture surface is calculated by considering the positions of the terminal equipment and of the interfering equipment expressed in spherical coordinates and by considering the geometric surface of a spherical cap whose axes correspond to the directions of the maximum radiation of the terminal equipment and interfering equipment.
- the fictitious capture surface is then obtained by multiplying this geometric surface by a fictitious efficiency c GF associated with a given type of antenna.
- the dummy antenna is assumed to be an aperture antenna, which gives a coefficient £ GF ⁇ 1.
- the method implements said step of selecting the current transmission frequency of the radio signal.
- the communication method further comprises a step of determining a new value of the recovery metric determined as a function of the value of the current transmission frequency of the radio signal.
- this metric is greater than the fixed threshold, then the terminal equipment and the interfering equipment are spatially dissociated and therefore have little or no interference.
- the communication equipment When the recovery metric is greater than a threshold, the communication equipment continues to communicate according to the current frequency of transmission of the radio signal.
- the terminal equipment and the interfering equipment are spatially dissociated and therefore have little or no interference, it is not necessary to select a new transmission frequency of a radio signal.
- the invention also relates to a method for determining a pick-up area of a terminal equipment communicating with a communication equipment according to a current transmission frequency equal to a first transmission frequency of a radio signal, the method being implemented by the terminal equipment and comprising the following steps:
- An object of the invention is communication equipment capable of communicating with at least a first terminal equipment item at a current frequency equal to a first transmission frequency of a radio signal, the communication equipment comprising means for:
- Another object of the invention is terminal equipment capable of determining a pick-up area allowing communication with a communication equipment according to a current transmission frequency equal to a first transmission frequency of a radio signal, the equipment terminal comprising means for:
- Another object of the invention is communication equipment capable of communicating with at least a first terminal equipment according to a transmission frequency among several transmission frequencies of a radio signal, the communication equipment comprising means for:
- interfering equipment determines for a given frequency among the several transmission frequencies a metric representative of an overlap of a first capture surface of the first terminal equipment and of a second capture surface of at least one second terminal equipment, called interfering equipment
- Another object of the invention is terminal equipment capable of determining a pick-up area allowing communication with communication equipment according to a given transmission frequency from among several transmission frequencies of a radio signal, the terminal equipment comprising means for:
- the invention relates to computer program products comprising program code instructions for implementing the methods as described above, when they are executed by a processor.
- the invention also relates to a recording medium readable by a computer on which are recorded computer programs comprising program code instructions for the execution of the steps of the methods according to the invention as described above.
- Such a recording medium can be any entity or device capable of storing the programs.
- the medium may comprise a storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or else a magnetic recording means, for example a USB key or a hard disk.
- such a recording medium can be a transmissible medium such as an electrical or optical signal, which can be conveyed via an electrical or optical cable, by radio or by other means, so that the programs computer it contains can be executed remotely.
- the programs according to the invention can in particular be downloaded over a network, for example the Internet.
- the recording medium can be an integrated circuit in which the programs are incorporated, the circuit being adapted to execute or to be used in the execution of the aforementioned methods of the invention.
- FIG. 1 this figure represents communication equipment and terminal equipment communicating according to a first transmission frequency of a radio signal
- FIG. 2 this figure represents the steps of the methods of communication and of calculation of a capture surface implemented by the communication equipment and the terminal equipment,
- FIG. 3 this figure represents this figure represents the capture surfaces of a terminal equipment and of an interfering equipment
- FIG. 4 this figure represents a communication device capable of implementing the different embodiments of the communication method
- FIG. 5 this figure represents terminal equipment M, II capable of implementing the various embodiments of the method for determining a capture surface.
- the [Fig. 1] represents communication equipment S, such as a base station or an access point, and terminal equipment M communicating at a current transmission frequency equal to a first transmission frequency of a radio signal.
- the sensing surface of an antenna A M of the terminal equipment M relates to the properties of the antenna in reception and its capacity to collect the energy of the radio signal transmitted by the communication equipment S on an effective surface.
- the maximum effective area of an antenna is deduced from the power of the radio signal received at the input of the receiving antenna (P R, M, ) and the effective area is deduced from the power of the radio signal received at the output of this same antenna (P R, M, out ) taking into account the transmission losses (E r ) of the antenna A M , also called mismatch losses.
- / s ) and for the terminal equipment M (r, Q, F) M (d, y M )) where d is the distance between the communication equipment S and the terminal equipment M.
- the ability of the antenna A M to collect the energy of the transmitted radio signal depends on the direction of the incident beam, that is to say on the directivity of the antenna As of the communication equipment S and the directivity of the antenna A M of the terminal equipment M, as well as the distance separating the communication equipment S and the terminal equipment M, of the efficiency losses of the antennas As Es and A M e M if the power at the inputs antennas (P s, in and P R, M-out ) is taken into account.
- the radiated power density p is d) is radiated power per unit area.
- the radiated power per unit area is, if the source antenna As is isotropic, given by:
- P s is the power radiated by the communication equipment S at the output of the antenna As, d the distance separating the communication equipment S and the terminal equipment M and p ⁇ 2 the surface of the sphere with radius d on which the power is radiated. If the radiation is directional then the radiated power density will be weighted by the directivity of the transmitting antenna As Ds ( ⁇
- This power density at the level of the terminal equipment M is given by:
- the incident power received at the input of the antenna A M depends on the incident power density radiated by the communication equipment S and which is characterized by a directivity Ds ( ⁇
- / s 0 s , f £ ), at a distance d from the communication equipment S.
- the reception point being characterized by M (y M , d)
- the incident power density at the level of the terminal equipment M depends on the directivity of the antenna As at transmission in the transmitter-receiver direction in the vicinity of the position of the terminal equipment M, ie D S (I ⁇ J m ).
- the incident power density at the level of the terminal equipment M Pi ⁇ i ⁇ p Mi d) is expressed in the form:
- the power received at the input of the antenna A M is the product of the incident power density p is (ifj M , d) and of the maximum capture area of the antenna A M on reception Scmax. M (Jc * s) taking into account the direction of the radio signal emitted by the communication equipment S and the directivity of the antenna A M.
- the maximum pick-up area of antenna A M depends on the incident direction of the radio signal emitted on the effective area of antenna A M , namely:
- the gain of an antenna G M (xl>) is proportional to the directivity of this antenna and takes account of the mismatch losses, ie e M for the receiving antenna when the antenna is connected to an RF circuit.
- Equation 1-9 shows that the capture area decreases when the current frequency of transmission of a radio signal increases, for a given antenna gain.
- the sensing surface of an antenna depends on the directivity of the antenna, the direction of the incident radio signal and the current frequency of transmission of the radio signal and collected by the antenna. receiver. It does not explicitly depend on the distance d.
- the power density on the other hand, depends on the distance d.
- the total power received by the terminal equipment M is given by:
- the sensing surface of an antenna can be connected to a geometric surface or to a geometric length of the antenna.
- it is an aperture antenna, such as a horn type antenna for example
- the opening efficiency of the antenna e G in the direction of the maximum radiation y 0 is linked to the capture surface maximum antenna by: where e G can vary between 1 and 0.5, depending on the geometry of the antenna and the expression of the field radiated at the geometric surface of the antenna.
- the [Fig. 2] represents the steps of the methods of communication and of calculation of a pick-up area implemented by the communication equipment S and the terminal equipment M.
- the source equipment S transmits a radio signal to the terminal equipment M and to at least one second terminal equipment called interferer equipment 11.
- a radio signal is transmitted at a current frequency of emission equal to a first emission frequency / c .
- a capture area of the terminal equipment M and of the interfering equipment 11 is calculated.
- step E2 When step E2 is implemented by the terminal equipment M and 11, the maximum capture areas thus calculated are transmitted to the communication equipment S.
- step E2 When step E2 is implemented by the communication equipment S, the terminal equipment M and 11 transmit power measurements in reception of a received signal or RSSI (Received .Signal Strength Indication) to the communication equipment S so that the latter can calculate the maximum capture surfaces of terminal equipment M and 11.
- RSSI Receiveived .Signal Strength Indication
- a step E3 knowing the positions of the terminal equipment M and 11, that is to say the angles y M and yii, assumed to be at the same distance d from the communication equipment S, the geometric surface d is deduced therefrom '' a spherical cap connecting the terminal equipment M and h using the following formula:
- the fictitious capture surface can be expressed using a mutual fictitious yield e GF connecting the geometric surface S cai Mj1 (ifj M , ifj I1 , d) to its maximum capture surface: e G ⁇ aaI, M , I ⁇ YM 'Y ⁇ ' d).
- the communication equipment S determines a first value of a metric a RFSC representative of an overlap of the sensing surface of the terminal equipment M and of the sensing surface of the interfering equipment 11 to the current transmission frequency / c . It is assumed that the fictitious antenna connecting the terminal equipment M and 11 is lossless, that is to say that the equivalent capture area is equal to the equivalent maximum capture area. On the other hand, it is assumed that the opening efficiency of the dummy antenna is equal to 1, in accordance with an aperture antenna. However, depending on the transmission conditions, the coefficient 8 G may be less than 1.
- the recovery metric a RFSC can therefore be calculated by taking into account the power levels received at the output of the antennas A M and An, ie at the input RF (Radio Frequency) circuits as follows:
- the numerical value of the recovery metric a RFSC is deduced simply from the location of the terminal equipment M and 11 (Q M and 0n), from the knowledge of the input power P s, i n of the communication equipment S , of the antenna gain of the communication equipment S in the direction and of a measurement of the power received at the input of the RF circuits of the terminal equipment M and 11 and of a value set arbitrarily for 8 G.
- step E5 the value of the recovery metric a RFSC determined during step E4 is compared with a threshold b.
- the terminal equipment M and the interfering equipment 11 are spatially dissociated and therefore have little or no interference. In other words, their capture surfaces do not overlap.
- the terminal devices M and 11 can both receive the same radio signal transmitted at the same current transmission frequency / c .
- the terminal equipment M and the interfering equipment 11 interfere spatially.
- a new current transmission frequency of a radio signal f c, i is selected from a set of possible transmission frequencies.
- the possible transmission frequencies can belong to different spectral bands, for example the spectral bands V and E if it is a radio signal transmitted in millimeter band.
- This current transmission frequency f c, i is used for a communication between the source equipment S and the terminal equipment M.
- the communication equipment S and the interfering equipment 11 communicate for example at the transmission frequency / c .
- a transmission frequency f cj of the radio signal is selected in addition to the transmission frequency f c, i during step E6.
- the current transmission frequency f cj is used for communication between the source equipment S and the terminal equipment M while the communication equipment S and the interfering equipment 11 communicate with each other at the transmission frequency f c, i .
- a step E8 the new value of the recovery metric a RFSC determined during step E7 is compared to the threshold b.
- the terminal equipments M and 11 interfere spatially.
- at least one new transmission frequency of a radio signal f c, k is selected, called the current frequency, from among the set of possible transmission frequencies during a step E9. Steps E7 to E9 are repeated until the new value of the recovery metric a RFSC is strictly greater than the threshold b.
- the terminal equipment M and the interfering equipment 11 are spatially dissociated and therefore have little or no interference.
- Steps E1 to E9 are carried out repeatedly over time.
- the proposed communication method can advantageously be implemented by communication equipment S having a multiple antenna made up of several groups of elementary antennas, capable of transmitting at different frequencies.
- Each group of elementary antennas can transmit at a given transmission frequency called the current frequency, making it possible to implement a known beam adjustment technique for the transmission frequency considered.
- the proposed communication method can be combined with a method of adapting the weighting of elementary antennas which modifies the pick-up area of the multiple antenna on reception.
- the beam is adjusted by modifying the wavelength determining the capture area, that is to say the transmission frequency using a multi-transmission frequency allocation process. -bandaged.
- a weighting adaptation method consists in selecting the transmission frequency, called the current frequency, in a wide frequency range in connection with a calculation of the pick-up area of a receiving antenna.
- a massive multifrequency MIMO antenna made up of N elementary antennas distributed into N G groups of antennas operating on at most N G distinct transmission frequencies can be used to effect the change in transmission frequency and the modification of the capture surface.
- different frequencies can be selected as a function of an overlap between sensing surfaces in order to simultaneously transmit by the communication equipment radio signals at these different frequencies to different terminals.
- the radio equipment communication includes different RF (radio frequency) circuits. The number of different RF circuits determines the number of different frequencies that can be transmitted simultaneously.
- a SISO antenna can also be used with N G frequencies included in the antenna bandwidth.
- the [fig. 4] represents a communication equipment S capable of implementing the different embodiments of the communication method according to FIG. 3.
- Communication equipment S can comprise at least one hardware processor 401, a storage unit 402, an interface 403, and at least one network interface 404 which are connected to each other through a bus 405.
- the elements components of the communication equipment S can be connected by means of a connection other than a bus.
- the communication equipment S comprises at least one transmit / receive antenna and its RF circuit.
- the communication equipment can include several RF circuits to transmit simultaneously at different frequencies.
- the processor 401 controls the operations of the communication equipment S.
- the storage unit 402 stores at least one program for the implementation of the method according to an embodiment to be executed by the processor 401, and various data, such as as parameters used for calculations performed by processor 401, intermediate data from calculations performed by processor 401, etc.
- the processor 401 can be formed by any known and suitable hardware or software, or by a combination of hardware and software.
- the processor 401 can be formed by dedicated hardware such as a processing circuit, or by a programmable processing unit such as a Central Processing Unit which executes a program stored in a memory of this one.
- the storage unit 402 may be formed by any suitable means capable of storing the program or programs and data in a computer readable manner. Examples of storage unit 402 include computer readable non-transient storage media such as solid-state memory devices, and magnetic, optical, or magneto-optical recording media loaded in a read and write unit. 'writing.
- the interface 403 provides an interface between the communication equipment S of other equipment not shown in the figures.
- At least one network interface 404 provides a connection between the communication equipment S and the terminal equipment M and 11.
- the [fig. 5] represents terminal equipment M, II capable of implementing the various embodiments of the method for determining a capture surface according to FIG. 3.
- Terminal equipment M can comprise at least one hardware processor 501, a storage unit 502, an interface 503, and at least one network interface 504 which are connected to each other through a bus 505.
- the components of the communication equipment S can be connected by means of a connection other than a bus.
- the terminal equipment M It comprises at least one transmit / receive antenna and its RF circuit.
- the processor 501 controls the operations of the terminal equipment M, 11.
- the storage unit 502 stores at least one program for the implementation of the method according to an embodiment to be executed by the processor 501, and various data, such as parameters used for calculations performed by processor 501, intermediate data from calculations performed by processor 501, and the like.
- the processor 501 can be formed by any known and suitable hardware or software, or by a combination of hardware and software.
- the processor 501 can be formed by dedicated hardware such as a processing circuit, or by a programmable processing unit such as a Central Processing Unit which executes a program stored in a memory thereof.
- the storage unit 502 may be formed by any suitable means capable of storing the program or programs and data in a computer readable manner.
- Examples of storage unit 502 include computer readable non-transient storage media such as solid-state memory devices, and magnetic, optical, or magneto-optical recording media loaded in a read and write unit. 'writing.
- the interface 503 provides an interface between the terminal equipment M, II other equipment not shown in the figures.
- At least one network interface 504 provides a connection between the terminal equipment M, II and the communication equipment S.
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Abstract
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Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1915356A FR3105671A1 (fr) | 2019-12-20 | 2019-12-20 | Procédé d’allocation de fréquences d’émission de signaux radio entre une ou plusieurs entités de communication, permettant une réduction des interférences entre ces entités de communication utilisant le même canal en fréquence |
| PCT/FR2020/052512 WO2021123650A1 (fr) | 2019-12-20 | 2020-12-17 | Procede d'allocation de frequences d'emission de signaux radio entre une ou plusieurs entites de communication, permettant une reduction des interferences entre ces entites de communication utilisant le meme canal en frequence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4078886A1 true EP4078886A1 (fr) | 2022-10-26 |
Family
ID=71452305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20848807.2A Pending EP4078886A1 (fr) | 2019-12-20 | 2020-12-17 | Procede d'allocation de frequences d'emission de signaux radio entre une ou plusieurs entites de communication, permettant une reduction des interferences entre ces entites de communication utilisant le meme canal en frequence |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12155441B2 (fr) |
| EP (1) | EP4078886A1 (fr) |
| FR (1) | FR3105671A1 (fr) |
| WO (1) | WO2021123650A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2661533B2 (ja) * | 1993-12-27 | 1997-10-08 | 日本電気株式会社 | 移動通信システムのチャネル割当方式 |
| US9112547B2 (en) * | 2007-08-31 | 2015-08-18 | Adc Telecommunications, Inc. | System for and method of configuring distributed antenna communications system |
| CN104053229B (zh) * | 2013-03-14 | 2018-09-28 | 南京中兴软件有限责任公司 | 移动终端、定位方法及装置 |
| JPWO2015046272A1 (ja) * | 2013-09-27 | 2017-03-09 | 京セラ株式会社 | ユーザ端末、ネットワーク装置及びプロセッサ |
| WO2015081570A1 (fr) * | 2013-12-06 | 2015-06-11 | Orange | Procédé d'ordonnancement d'équipement d'utilisateur dans un réseau hétérogène |
| GB2539735A (en) * | 2015-06-25 | 2016-12-28 | Airspan Networks Inc | Sub-sampling antenna elements |
| US11223418B2 (en) * | 2019-12-31 | 2022-01-11 | Hughes Network Systems, Llc | Multi-band satellite terminal estimating a second band based on first band link conditions |
-
2019
- 2019-12-20 FR FR1915356A patent/FR3105671A1/fr not_active Withdrawn
-
2020
- 2020-12-17 US US17/757,763 patent/US12155441B2/en active Active
- 2020-12-17 WO PCT/FR2020/052512 patent/WO2021123650A1/fr not_active Ceased
- 2020-12-17 EP EP20848807.2A patent/EP4078886A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021123650A1 (fr) | 2021-06-24 |
| FR3105671A1 (fr) | 2021-06-25 |
| US20230344494A1 (en) | 2023-10-26 |
| US12155441B2 (en) | 2024-11-26 |
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