Methods and apparatus for implementing a repeater are described. In various embodiments the repeater determines uplink/downlink timing information either from information broadcast from a base station or from monitoring received signals and/or gaps between received signals. In various embodiments while the repeater may decode control information to determine uplink/downlink time periods, user data is not decoded and re-encoded. In various embodiments interference between uplink and downlink circuitry is reduced or minimized by controlling gains, combining weights and/or power to amplifiers in the repeater based on the mode of operation. A stored information can include sets of different weights and/or parameters for the mode of operation and/or beam forming antenna pattern in use at a given time.
H04L 5/14 - Fonctionnement à double voie utilisant le même type de signal, c.-à-d. duplex
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
Methods and apparatus for implementing a phase shifter in a space, e.g., chip surface area, efficient manner is described. In various embodiments a combination of switches, capacitors and a transformer are used in combination as a controllable phase shifter. In some embodiments the phase shifter supports a phase shift of 0 degrees or 180 degrees depending on the position of one or more switches. The mutual inductance of the transformer in at least some embodiments emulates one or more capacitors in a phase shift network making for an implementation that can be implemented on a semiconductor in an area efficient manner as compared to implementations using more capacitors and independent inductors.
Methods and apparatus for implementing a power amplifier circuit assembly an uneven power splitter which feeds two power amplifiers of different amplifier classes are described. By supplying different amounts of power to different amplifier circuits having different performance curves, an overall combined amplifier performance having a relatively uniform, e.g., flat, performance curve over a wide range of frequencies is achieved. In at least some embodiments one of the amplifiers is a class B power amplifier and the other amplifier is a class C power amplifier. In some but not necessarily all embodiments a phase shift is introduced on a signal path to one of the power amplifiers to compensate for a difference in phase shifts introduced by the power amplifiers which are used in parallel.
H03F 1/08 - Modifications des amplificateurs pour réduire l'influence défavorable de l'impédance interne des éléments amplificateurs
H03F 1/10 - Modifications des amplificateurs pour réduire l'influence défavorable de l'impédance interne des éléments amplificateurs par utilisation d'éléments amplificateurs comportant des connexions d'électrodes multiples
H03F 3/20 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C
H03F 3/21 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C comportant uniquement des dispositifs à semi-conducteurs
H03F 3/213 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C comportant uniquement des dispositifs à semi-conducteurs dans des circuits intégrés
4.
METHODS AND APPARATUS FOR IMPLEMENTING ANTENNA ASSEMBLIES AND/OR COMBINING ANTENNA ASSEMBLIES TO FORM ARRAYS
Methods and apparatus for implementing an arrangement of antennas in an apparatus are described. The combining of antennas and related components using Ball Grid Array (BGA) technology and various spacing/heat routing techniques allows for a group of antennas and related ICs to be implemented as a printed circuit board mountable package. Multiple antenna packages can be mounted on a printed circuit board to allow for different numbers of antennas to be included in a device depending on communications needs. The antenna package is well suited for mm-wave applications.
Methods and apparatus for implementing a circuit capable of operating as a passive power divider or combiner are described. In at least some embodiments multiple modes of operation are supported with one of the modes being a mode in which power is not communicated along one of the paths in the circuit, e.g., because the path leads to an inactive component or element. The methods and apparatus are well suited for use in communications devices and/or transceiver circuits. The passive nature of the power combiner/divider allows the device in some embodiments to act as a power divider when signals pass through the circuit in a first direction, e.g., during a transmit mode of operation, and to act as a power combiner when signals pass through the circuit in the other direction, e.g., during a receive mode of operation.
H01P 5/16 - Dispositifs à accès conjugués, c.-à-d. dispositifs présentant au moins un accès découplé d'un autre accès
H01P 5/12 - Dispositifs de couplage présentant au moins trois accès
H01P 5/18 - Dispositifs à accès conjugués, c.-à-d. dispositifs présentant au moins un accès découplé d'un autre accès consistant en deux guides couplés, p. ex. coupleurs directionnels
Methods and apparatus for implementing passive wideband phase shifters are described. The phase shifters exhibit good linearity over a wide range of frequencies. Furthermore at least some features are directed to allowing the phase shifters to be implemented in some embodiments in a relatively compact manner making such embodiments well suited for supporting arrays and/or other implementations where a large number of phase shifters are to be implemented in a relatively small chip area.
H04B 1/707 - Techniques d'étalement de spectre utilisant une modulation par séquence directe
H04B 1/10 - Dispositifs associés au récepteur pour limiter ou supprimer le bruit et les interférences
H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission
H04B 7/00 - Systèmes de transmission radio, c.-à-d. utilisant un champ de rayonnement
Methods and apparatus for implementing passive wideband phase shifters are described. The phase shifters exhibit good linearity over a wide range of frequencies. Furthermore at least some features are directed to allowing the phase shifters to be implemented in some embodiments in a relatively compact manner making such embodiments well suited for supporting arrays and/or other implementations where a large number of phase shifters are to be implemented in a relatively small chip area.
Methods and apparatus for implementing a circuit capable of operating as a passive power divider or combiner are described. In at least some embodiments multiple modes of operation are supported with one of the modes being a mode in which power is not communicated along one of the paths in the circuit, e.g., because the path leads to an inactive component or element. The methods and apparatus are well suited for use in communications devices and/or transceiver circuits. The passive nature of the power combiner/divider allows the device in some embodiments to act as a power divider when signals pass through the circuit in a first direction, e.g., during a transmit mode of operation, and to act as a power combiner when signals pass through the circuit in the other direction, e.g., during a receive mode of operation.
Methods and apparatus for implementing an arrangement of antennas in an apparatus are described. The combining of antennas and related components using Ball Grid Array (BGA) technology and various spacing/heat routing techniques allows for a group of antennas and related ICs to be implemented as a printed circuit board mountable package. Multiple antenna packages can be mounted on a printed circuit board to allow for different numbers of antennas to be included in a device depending on communications needs. The antenna package is well suited for mm-wave applications.
H01Q 21/06 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles
H01Q 21/24 - Combinaisons d'unités d'antennes polarisées dans des directions différentes pour émettre ou recevoir des ondes polarisées circulairement ou elliptiquement ou des ondes polarisées linéairement dans n'importe quelle direction
10.
Methods and apparatus for supporting linearization on power combined power amplifiers
Methods and apparatus for implementing a power amplifier circuit assembly an uneven power splitter which feeds two power amplifiers of different amplifier classes are described. By supplying different amounts of power to different amplifier circuits having different performance curves, an overall combined amplifier performance having a relatively uniform, e.g., flat, performance curve over a wide range of frequencies is achieved. In at least some embodiments one of the amplifiers is a class B power amplifier and the other amplifier is a class C power amplifier. In some but not necessarily all embodiments a phase shift is introduced on a signal path to one of the power amplifiers to compensate for a difference in phase shifts introduced by the power amplifiers which are used in parallel.
Methods and apparatus for implementing a phase shifter in a space, e.g., chip surface area, efficient manner is described. In various embodiments a combination of switches, capacitors and a transformer are used in combination as a controllable phase shifter. In some embodiments the phase shifter supports a phase shift of 0 degrees or 180 degrees depending on the position of one or more switches. The mutual inductance of the transformer in at least some embodiments emulates one or more capacitors in a phase shift network making for an implementation that can be implemented on a semiconductor in an area efficient manner as compared to implementations using more capacitors and independent inductors.
A communications device including an array antenna assembly including a plurality of transmit chains, each with a transmit power amplifier, synchronously captures transmit power measurements for each power amplifier. A baseband transmitter in the communications device determines when a predetermined symbol in a protocol, e.g. a PSS SSB symbol, is to be transmitted and sends, e.g. via a SPI, a capture command to command each of the ADCs corresponding to the power amplifiers to synchronously capture a power measurement. Power measurements are captured at the boundary of the predetermined symbol, and the power measurements represent average transmit power levels corresponding to the symbol. The power measurements are communicated to the baseband transmitter which processes the data using calibration tables and taper information. Processed power measurements are compared to desired transmitter target levels and errors are determined. Based on the errors the gains of one or more TX chains are adjusted.
H04W 52/20 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le taux d'erreur
A communications apparatus which supports beamforming is described. The communications apparatus includes an array of N beam forming circuits, each of the N beamforming circuits including an RF signal input coupled to a phase shifter, an attenuator and a power amplifier. The communications apparatus further includes an array of antenna elements, each one of the N beamforming circuits including an output coupled to a different one of the antenna elements in the array of antenna elements; and a set of beam tables including control values used to selectively control elements of the beamforming circuits. The beam tables include sets of control values which are accessed and used to control components of the beamforming circuits depending on the beam angle to be used during a given time period. A feedback circuit generate EVM control information based on output signals from the beam forming circuits.
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
A communications apparatus which supports beamforming is described. The communications apparatus includes an array of N beam forming circuits, each of the N beamforming circuits including an RF signal input coupled to a phase shifter, an attenuator and a power amplifier. The communications apparatus further includes an array of antenna elements, each one of the N beamforming circuits including an output coupled to a different one of the antenna elements in the array of antenna elements; and a set of beam tables including control values used to selectively control elements of the beamforming circuits. The beam tables include sets of control values which are accessed and used to control components of the beamforming circuits depending on the beam angle to be used during a given time period. A feedback circuit generate EVM control information based on output signals from the beam forming circuits.
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
A communications device including an array antenna assembly including a plurality of transmit chains, each with a transmit power amplifier, synchronously captures transmit power measurements for each power amplifier. A baseband transmitter in the communications device determines when a predetermined symbol in a protocol, e.g. a PSS SSB symbol, is to be transmitted and sends, e.g. via a SPI, a capture command to command each of the ADCs corresponding to the power amplifiers to synchronously capture a power measurement. Power measurements are captured at the boundary of the predetermined symbol, and the power measurements represent average transmit power levels corresponding to the symbol. The power measurements are communicated to the baseband transmitter which processes the data using calibration tables and taper information. Processed power measurements are compared to desired transmitter target levels and errors are determined. Based on the errors the gains of one or more TX chains are adjusted.
H04W 52/20 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le taux d'erreur
H04W 52/42 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué dans des situations particulières dans des systèmes à diversité de temps, d'espace, de fréquence ou de polarisation
Controllable radio frequency power amplifiers (RFPAs), e.g., in a Hybrid- MIMO array, which are being driven at lower power levels, are operated at conditions such that their inherent EVM and ACER are intentionally further increased. This increase of inherent EVM and ACER is done in a precise manner, and the increased inherent EVM and ACER are cancelled or reduced by the EVM and ACER of the input Array DPD signal. The net result is improved EVM and ACER performance over a broader range of angles. Exemplary methods and apparatus for increasing distortion include individual or combinations of: i) changing the DC bias a RFPA based on average operating power level; ii) changing supply voltage, e.g. Vcc, of a RFPA based on average operating power level, iii) adding a controllable non-linear element, such as a diode or varactor, at the input of the RFPA, based on the average operating power.
H03F 1/02 - Modifications des amplificateurs pour augmenter leur rendement, p. ex. étages classe A à pente glissante, utilisation d'une oscillation auxiliaire
H03F 1/32 - Modifications des amplificateurs pour réduire la distorsion non linéaire
H03F 3/24 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C d'étages transmetteurs de sortie
Methods and apparatus for calibrating signal processing chains using cross coupling between polarizations are described. Various exemplary methods and apparatus, in accordance with the present invention, are well suited for use in communications devices using beamforming and including arrays of TX/RX front ends, e.g., a first plurality of horizontal polarization front ends and a second plurality of vertical polarization front ends.
H03C 7/02 - Modulation d'ondes électromagnétiques dans des lignes de transmission, des guides d'ondes, des résonateurs à cavité ou des champs de radiation des antennes
H04B 7/02 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
H04B 7/10 - Diversité de polarisationDiversité de direction
Methods and apparatus for calibrating signal processing chains using cross coupling between polarizations are described. Various exemplary methods and apparatus, in accordance with the present invention, are well suited for use in communications devices using beamforming and including arrays of TX/RX front ends, e.g., a first plurality of horizontal polarization front ends and a second plurality of vertical polarization front ends.
H04B 17/14 - SurveillanceTests d’émetteurs pour l’étalonnage de l’ensemble voie d’émission/voie de réception, p. ex. bouclage d’autotest
H01Q 3/26 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la phase relative ou l’amplitude relative et l’énergie d’excitation entre plusieurs éléments rayonnants actifsDispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la distribution de l’énergie à travers une ouverture rayonnante
H04B 7/10 - Diversité de polarisationDiversité de direction
19.
METHOD AND APPARATUS FOR IMPLEMENTING REFLECTION TYPE PHASE SHIFTERS (RTPS) IN A COMMUNICATION SYSTEM
A controllable reflection type phase shifter that includes an adjustable hybrid coupler and controllable adjustable reflection load circuit is described and used in some embodiments to implemented a communication system. In some embodiments the communication system supports beam forming through the use of a plurality of TX/RX signal processing chains (SPCs), each SPC including at least one reflection type phase shifter, e.g., a controllable reflection type phase shifter. The controllable reflection type phase shifters in different SPCs of the array are configured, e.g., differently, based on the particular beam pattern being used to transmit or receive signals at a given time. Control information, e.g., control values, are stored in memory with the control values corresponding to an antenna pattern to be used at a given time being retrieved from memory and to control the circuits, e.g., controllable reflection type phase shifters, in the system.
H04B 7/04 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées
H04B 7/0408 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées utilisant plusieurs faisceaux, c.-à-d. diversité de faisceaux
A controllable reflection type phase shifter that includes an adjustable hybrid coupler and controllable adjustable reflection load circuit is described and used in some embodiments to implemented a communication system. In some embodiments the communication system supports beam forming through the use of a plurality of TX/RX signal processing chains (SPCs), each SPC including at least one reflection type phase shifter, e.g., a controllable reflection type phase shifter. The controllable reflection type phase shifters in different SPCs of the array are configured, e.g., differently, based on the particular beam pattern being used to transmit or receive signals at a given time. Control information, e.g., control values, are stored in memory with the control values corresponding to an antenna pattern to be used at a given time being retrieved from memory and to control the circuits, e.g., controllable reflection type phase shifters, in the system.
H01Q 3/38 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la phase relative ou l’amplitude relative et l’énergie d’excitation entre plusieurs éléments rayonnants actifsDispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la distribution de l’énergie à travers une ouverture rayonnante faisant varier la phase par des moyens électriques avec des déphaseurs variables les déphaseurs étant numériques
Controllable radio frequency power amplifiers (RFPAs), e.g., in a Hybrid-MIMO array, which are being driven at lower power levels, are operated at conditions such that their inherent EVM and ACLR are intentionally further increased. This increase of inherent EVM and ACLR is done in a precise manner, and the increased inherent EVM and ACLR are cancelled or reduced by the EVM and ACLR of the input Array DPD signal. The net result is improved EVM and ACLR performance over a broader range of angles. Exemplary methods and apparatus for increasing distortion include individual or combinations of: i) changing the DC bias a RFPA based on average operating power level; ii) changing supply voltage, e.g. Vcc, of a RFPA based on average operating power level, iii) adding a controllable non-linear element, such as a diode or varactor, at the input of the RFPA, based on the average operating power.
H03F 1/32 - Modifications des amplificateurs pour réduire la distorsion non linéaire
H03F 3/24 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C d'étages transmetteurs de sortie
H03F 1/02 - Modifications des amplificateurs pour augmenter leur rendement, p. ex. étages classe A à pente glissante, utilisation d'une oscillation auxiliaire
Methods and apparatus for selecting a beam mode and/or beam for communicating with one or more devices are described. The beam mode selection may be and sometimes is between a broad beam mode of operation and a narrow beam mode of operation with respect to a particular device. Communication with one or more device may happen at a given time with the preferred beam mode and/or choice for an individual device sometimes being replaced with a beam mode and/or beam choice which is preferable from an overall system perspective, e.g., because it allows data transmission and/QoS requirements to multiple devices to be supported better than would be achieved if the preferred beam mode and/or beam selection made with respect to an individual device was used. The beam mode and/or beam selected for traffic data communication sometimes is different from the beam mode and/or beam used for communicating control channel information.
H04W 24/10 - Planification des comptes-rendus de mesures
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
23.
Methods and apparatus for using an addressable serial peripheral interface
Devices in an array of devices, coupled to a common SPI bus, are automatically assigned identifiers by an enumeration process. In some embodiments, the devices are coupled together in an enumeration daisy chain. The enumeration function is initiated, e.g., by a controller, with a single SPI transaction.
Devices in an array of devices, coupled to a common SPI bus, are automatically assigned identifiers by an enumeration process. In some embodiments, the devices are coupled together in an enumeration daisy chain. The enumeration function is initiated, e.g., by a controller, with a single SPI transaction.
Methods and apparatus for implementing a power efficient amplifier device through the use of a main (primary) and auxiliary (secondary) power amplifier are described. The primary and secondary amplifiers operate as current sources providing current to the load. Capacitance coupling is used to couple the primary and secondary amplifier outputs. In some embodiments the combination of primary and secondary amplifiers achieve high average efficiency over the operating range of the device in which the primary and secondary amplifiers are used in combination as an amplifier device. The amplifier device is well suited for implementation using CMOS technology, e.g., N- MOSFETs, and can be implemented in an integrated circuit space efficient manner that is well suited for supporting RF transmissions in the GHz frequency range, e.g., 30 GHz frequency range. The primary amplifier in some embodiments is a CLASS-AB or B amplifier and the secondary amplifier is a CLASS-C amplifier.
H03F 1/02 - Modifications des amplificateurs pour augmenter leur rendement, p. ex. étages classe A à pente glissante, utilisation d'une oscillation auxiliaire
H03F 1/56 - Modifications des impédances d'entrée ou de sortie, non prévues ailleurs
H03F 3/193 - Amplificateurs à haute fréquence, p. ex. amplificateurs radiofréquence comportant uniquement des dispositifs à semi-conducteurs comportant des dispositifs à effet de champ
H03F 3/21 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C comportant uniquement des dispositifs à semi-conducteurs
Methods and apparatus for implementing a power efficient amplifier device through the use of a main (primary) and auxiliary (secondary) power amplifier are described. The primary and secondary amplifiers operate as current sources providing current to the load. Capacitance coupling is used to couple the primary and secondary amplifier outputs. In some embodiments the combination of primary and secondary amplifiers achieve high average efficiency over the operating range of the device in which the primary and secondary amplifiers are used in combination as an amplifier device. The amplifier device is well suited for implementation using CMOS technology, e.g., N-MOSFETs, and can be implemented in an integrated circuit space efficient manner that is well suited for supporting RF transmissions in the GHz frequency range, e.g., 30 GHz frequency range. The primary amplifier in some embodiments is a CLASS-AB or B amplifier and the secondary amplifier is a CLASS-C amplifier.
H03F 1/02 - Modifications des amplificateurs pour augmenter leur rendement, p. ex. étages classe A à pente glissante, utilisation d'une oscillation auxiliaire
H03F 3/21 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C comportant uniquement des dispositifs à semi-conducteurs
Methods and apparatus for implementing a repeater are described. In various embodiments the repeater determines uplink/downlink timing information either from information broadcast from a base station or from monitoring received signals and/or gaps between received signals. In various embodiments while the repeater may decode control information to determine uplink/downlink time periods, user data is not decoded and re-encoded. In various embodiments interference between uplink and downlink circuitry is reduced or minimized by controlling gains, combining weights and/or power to amplifiers in the repeater based on the mode of operation. A stored information can include sets of different weights and/or parameters for the mode of operation and/or beam forming antenna pattern in use at a given time.
Methods and apparatus for implementing a repeater are described. In various embodiments the repeater determines uplink/downlink timing information either from information broadcast from a base station or from monitoring received signals and/or gaps between received signals. In various embodiments while the repeater may decode control information to determine uplink/downlink time periods, user data is not decoded and re-encoded. In various embodiments interference between uplink and downlink circuitry is reduced or minimized by controlling gains, combining weights and/or power to amplifiers in the repeater based on the mode of operation. A stored information can include sets of different weights and/or parameters for the mode of operation and/or beam forming antenna pattern in use at a given time.
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
Methods and apparatus for selecting a beam mode and/or beam for communicating with one or more devices are described. The beam mode selection maybe and sometimes is between a broad beam mode of operation and a narrow beam mode of operation with respect to a particular device. Communication with one or more device may happen at a given time with the preferred beam mode and/or choice for an individual device sometimes being replaced with a beam mode and/or beam choice which is preferable from an overall system perspective, e.g., because it allows data transmission and/QoS requirements to multiple devices to be supported better than would be achieved if the preferred beam mode and/or beam selection made with respect to an individual device was used. The beam mode and/or beam selected for traffic data communication sometimes is different from the beam mode and/or beam used for communicating control channel information.
H04W 24/10 - Planification des comptes-rendus de mesures
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
Methods and apparatus for selecting a beam mode and/or beam for communicating with one or more devices are described. The beam mode selection maybe and sometimes is between a broad beam mode of operation and a narrow beam mode of operation with respect to a particular device. Communication with one or more device may happen at a given time with the preferred beam mode and/or choice for an individual device sometimes being replaced with a beam mode and/or beam choice which is preferable from an overall system perspective, e.g., because it allows data transmission and/QoS requirements to multiple devices to be supported better than would be achieved if the preferred beam mode and/or beam selection made with respect to an individual device was used. The beam mode and/or beam selected for traffic data communication sometimes is different from the beam mode and/or beam used for communicating control channel information.
H04B 1/38 - Émetteurs-récepteurs, c.-à-d. dispositifs dans lesquels l'émetteur et le récepteur forment un ensemble structural et dans lesquels au moins une partie est utilisée pour des fonctions d'émission et de réception
H04B 7/0408 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées utilisant plusieurs faisceaux, c.-à-d. diversité de faisceaux
brevets
