78 results about "Distributed antenna system" patented technology

The invention provides an indoor distribution system fault diagnosis method and device, a repair method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of communication. The diagnosis method comprises the steps that multi-source data of an indoor distribution system are acquired, and the multi-source data comprise user terminal signal quality data, indoor distribution equipment state data, indoor distribution equipment configuration information, environment data and network management data; positioning multi-source data of the fault room subsystem according to a preset fault feature library; the multi-source data of the fault room subsystem are analyzed from the terminal level, the equipment level, the area level and the system level, and the fault type of the fault room subsystem is diagnosed. The problem that faults are difficult to comprehensively and accurately locate due to the fact that a single data source or a simple monitoring means is mostly depended in the prior art is at least solved. The method is suitable for fault diagnosis and repair scenes.

This invention relates to a DAS comprising a digital donor interface circuit, an RF donor interface circuit, a first DAS propagation path, a second DAS propagation path, and a radio unit and configured to obtain a first propagation time delay for the first DAS propagation path and a second propagation time delay for the second DAS propagation path, obtain at least one of a time delay of the RF donor interface circuit and the digital donor interface circuit, determine a first downlink time delay value, and transmit the first downlink time delay value to a delay adjustment circuit in a downlink path of the DAS.

At a high level, the technology disclosed herein relates to methods, systems, media, etc., for a network coverage optimization engine. In embodiments, network coverage can be optimized by applying particular updates, changes, etc., to a network configuration for one or more coverage areas provided by one or more base stations (e.g., a macro base station, another type of outdoor base station, an indoor cell, a distributed antenna system). For example, the network configuration can be determined based on one or more particular radio frequency (RF) performance metrics for a coverage area being below a threshold. In embodiments, one or more machine learning models may be implemented to predict signal coverage changes upon applying the determined network configuration based on the collected data for the coverage area (e.g., network data, user device network feedback, user device location data, environmental profiles for the coverage area, etc.).

This invention discloses a high-performance communication transmission method based on 5G distributed antenna cooperative networking, specifically relating to the field of distributed antenna communication technology. It addresses the problems of existing distributed antenna systems relying on explicit control signaling for node scheduling, power allocation, and beam control, resulting in high signaling overhead, high scheduling delay, and low cooperative efficiency in high-speed mobile and complex channel environments. By mapping transmit power levels, energy storage unit voltage states, and beam pointing information to the amplitude, phase, and subcarrier distribution characteristics of the pilot sequence, multi-dimensional control information is implicitly carried at the physical layer. User equipment then analyzes the superimposed pilots to complete the selection of the dominant antenna node and beam pointing correction feedback. This allows each antenna node to perform cooperative transmission and adaptive adjustment based on the feedback results, thereby achieving efficient and stable distributed cooperative communication without the need for additional control signaling.

To provide a distributed antenna system with an increased operational flexibility, with eliminating constraints regarding shared use of infrastructure.SOLUTION: According to an embodiment, a distributed antenna system includes a master unit, and a remote unit having an antenna capable of covering a first band and a second band neighboring to the first band. The master unit includes a base station connection part, a slave station connection part, a detection part, and an operation control part. The base station connection part is capable being connected to a first base station to which a first band is allocated and a second base station to which a second band is allocated. The slave station connection part is capable being connected to the remote unit. The detection part detects a downlink signal in the first band. The operation control part allows an operation configuration in which a time division multiplexing pattern in the second band and a time division multiplexing pattern in the first band are different, in a period in which loss of the downlink signal in the first band is detected from the output of the detection part.SELECTED DRAWING: Figure 3

A universal digital card, UDC (122) for use in a node of a distributed antenna system, DAS (100), the UDC (122) comprising: an external digital interface (124) to communicatively couple the UDC (122) to an external communication link used to transmit and receive data in any of a plurality of different external interface formats; and wherein the UDC (122) is configured to: receive data formatted according to any of the plurality of external interface formats from the external communication link via the external digital interface; communicate data formatted according to any of the plurality of external interface formats over the external communication link via the external digital interface; and wherein the UDC (122) is configured to be selectively used either as: a donor card to communicatively couple the node to one or more base station entities (108) via the external digital interface; or a distribution card to communicatively couple the node to one or more non-DAS nodes, hubs, switches, or remote radio heads or one or more other DAS nodes or access points.

One embodiment is directed to a virtual distributed antenna system (vDAS) that comprises one or more self-configuration entities configured to: determine characteristics of one or more donor base stations: determine available resources that are available to implement the vDAS; determine, using the characteristics of the one or more donor base stations and the available resources available to implement the vDAS, a scaled configuration for the vDAS to serve the one or more donor base stations that is scaled so that the available resources available to implement the vDAS are sufficient to implement the vDAS in accordance with the scaled configuration; and configure the vDAS to serve the one or more donor base stations in accordance with the scaled configuration by executing the scalable vDAS software on physical server computers in accordance with the scaled configuration. Other embodiments are disclosed.

Systems and methods for base station performance statistics collection in distributed antenna systems are provided. In certain embodiment, a system includes a distributed antenna system comprising at least one processor, wherein executable code directs the at least one processor to decode messages from and to user equipment in communication with the distributed antenna system. The system also includes a database, wherein the at least one processor stores parameters identified in the decoded messages in the database. Further, performance of the distributed antenna system is adjusted based on the stored parameters.

Methods, systems, and devices are disclosed for optimizing a radiation pattern of an indoor ceiling and / or wall mounted radio unit for a distributed antenna system / radio point system (DAS / RDS). According to one aspect, a method includes obtaining beamforming weights for generating a shaped radiation pattern that provides a same effective isotropic radiated power (EIPR) at a plurality of locations within a target cell; and applying the obtained beamforming weights to a signal directed to an array of antenna elements of a radio interface to generate the shaped radiation pattern.

This invention discloses a radio frequency (RF) activation method, apparatus, electronic device, and medium for an indoor distributed antenna. The method includes: performing three-dimensional local peak detection on target wall nodes of a target building to obtain target anchor points; projecting a two-dimensional continuous probability map, determined by superimposing parameter information of the target cores of all target anchor points, onto the target beam angular domain of each distributed antenna element to determine the coverage occupancy rate of each beam element in the target beam angular domain; allocating transmit power vectors to the target beam angular domain based on the coverage occupancy rate; determining the target RF chain for each beam element in the target beam angular domain based on the angular difference between two adjacent beam elements in the target beam angular domain; and transmitting the transmit power vector of the target beam angular domain and at least one target RF chain to the corresponding distributed antenna element in the target beam angular domain. This invention enables an indoor distributed antenna system to significantly reduce RF link power consumption while ensuring RF link quality.

This invention provides a method and system for transmitting multi-point positioning signals in an indoor distributed antenna system (DAS), belonging to the field of satellite positioning technology. The method includes: acquiring multiple mobile communication signals and multiple positioning signals; obtaining a time-division multiplexed signal based on the multiple positioning signals and preset positioning signal parameters; performing a multiplexing process on the time-division multiplexed signal and the multiple mobile communication signals to obtain a hybrid transmission signal; transmitting the hybrid transmission signal to at least one receiving point in the DAS; separating the hybrid transmission signal at the receiving point to obtain multiple separated positioning signals and multiple mobile communication signals; performing time delay compensation processing on the multiple separated positioning signals to obtain delay-compensated multiple positioning signals; and performing a multiplexing process on the delay-compensated multiple positioning signals to obtain an output positioning signal, which is then transmitted through a positioning antenna. This scheme achieves time-division multiplexing transmission and precise positioning of multi-point co-frequency satellite signals in an indoor DAS.

This document relates to techniques for providing connectivity features in a radio access network. For instance, the disclosed techniques can employ a middlebox to process fronthaul traffic relating to communications between distributed units and radio units of a radio access network. The processing can provide various connectivity features, such a distributed antenna system connectivity feature, a distributed multiple-input and multiple-output connectivity feature, and / or a radio unit sharing feature that involves sharing of a particular radio unit among two or more distributed units. The processing can also provide an application programming interface for accessing scheduling information, signal quality measurements, buffer status, random access attempts, and / or network load relating to the fronthaul traffic.

One embodiment is directed to a virtualized distributed antenna system (vDAS) comprising: a plurality of physical server computers on which scalable vDAS software is executed to perform a plurality of roles for the vDAS; and a plurality of access points (APs), each of the APs communicatively coupled to at least one of the physical server computers. The vDAS is configured to: determine if there has been a failure in performing a first role included in the plurality of roles performed for the vDAS, the first role performed using a first physical server computer included in the plurality of physical server computers; and, in response to the failure in performing the first role using the first physical server computer, perform the first role using a second physical server computer included in the plurality of physical server computers. Other embodiments are disclosed.

A wireless communication method in a distributed antenna system including a base station and a plurality of antennas that communicates with one or more terminal stations by spatial multiplexing according to control of the base station, the wireless communication method including: calculating, for each candidate terminal station, a partial weight matrix based on channel information acquired between a plurality of antennas of the candidate terminal station to be subjected to communication by spatial multiplexing using two or more antennas among the plurality of antennas and the two or more antennas used for the spatial multiplexing; multiplying a transmission signal for the candidate terminal station by the calculated partial weight matrix for the candidate terminal station; and transmitting, to each candidate terminal station, the transmission signal for the candidate terminal station multiplied by the partial weight matrix for the candidate terminal station.

A distributed antenna monitoring system 1400 comprises a plurality of transmitters TX positioned in proximity to a plurality of respective antennas ANT. Each of the plurality of transmitters TX are as

Techniques for reducing downlink data and / or uplink data transported in a distributed antenna system (DAS) are provided. Time domain data is transformed into a frequency domain. In the DAS, on a PRB-by-PRB basis, whether each of frequency-domain downlink digital data and frequency-domain uplink digital data comprise a meaningful signal is determined. Each of the frequency-domain downlink digital data and the frequency-domain uplink digital data comprising valid PRBs are subsequently transported in the DAS. Other techniques are disclosed for utilizing O-RAN user plane messages and corresponding O-RAN control plane messages in fronthaul transport of a distributed antenna system (DAS) to reduce bandwidth consumption and simplify management of the DAS. Bandwidth consumption in the fronthaul transport of the DAS is diminished by only transporting IQ data having a valid signal.

The application provides a distributed antenna system and a frequency band permission method thereof. The distributed antenna system comprises a near-end device and one or more remote-end devices connected to the near-end device. The frequency band permission method comprises the following steps: the near-end device acquires an activation code of a to-be-authorized frequency band, acquires frequency band permission information according to the activation code, and informs the remote-end device to activate a radio frequency link corresponding to frequency band information in the frequency band permission information. The application realizes the frequency band permission function of the distributed antenna system, meets the requirement of selectively opening part of the frequency bands by the customer, and reduces the initial operation cost of the operator.

A low-profile, highly isolated, ultra-wideband multiple-input and multiple-output (MIMO) antenna for use in a distributed antenna system includes: (a) a feeding circuit on a dielectric substrate that includes a coplanar waveguide (CPW) including a signal feed and a return that includes first and second return sections coplanar with and apart from the signal feed; (b) first and second radiator circuits including first and second monopole radiators, respectively, the first and second return sections being coplanar with and spaced apart from the first monopole radiator; (c) a decoupling circuit, disposed on a first side of the dielectric substrate, that includes a conductive strip for reducing mutual coupling between the first and second radiator circuits; and (d) a matching circuit including a plurality of stubs disposed on a second side of the dielectric substrate opposite the first side, the matching circuit being operable to reduce return loss of the MIMO antenna.

A method for monitoring a distributed antenna system includes: at a relay device, receiving a first operation monitoring signal sent by the near-end device, where the first operation monitoring signal carries an operation monitoring message, and the operation monitoring message includes a device address of a monitoring target device; determining whether to parse the first operation monitoring signal according to a connection status with the near-end device; in response to a determination to parse the first operation monitoring message signal, parsing the first operation monitoring signal to confirm the monitoring target device and to determine whether to respond to the operation monitoring message; and in response to a determination to respond to the operation monitoring message, responding to the operation monitoring message according to the monitoring target device as confirmed.

This station establishment design device comprises: an area setting unit that sets an area for which to perform station establishment design; a distributed antenna system (DAS) position candidate setting unit that sets a plurality of antenna position candidates that are candidates for installation positions of a DAS; a user equipment (UE) position setting unit that sets a plurality of UE positions at which a UE can be present; a distance calculation unit that calculates distances for all combinations of the antenna position candidates and the UE positions; an angle calculation unit that calculates, for all of the combinations, the azimuth angles of the antenna position candidates as viewed from the UE positions; a propagation path calculation unit that calculates propagation paths for all of the combinations; a determination unit that determines, on the basis of the calculated distances and the calculated propagation paths, whether a UE position can be covered by an antenna position candidate; and a selection unit that, on the basis of the result of the determination, selects the installation positions for the DAS such that an objective function using the angular spread of the calculated azimuth angles is maximized while all the UE positions are covered by at least a prescribed number of antenna position candidates.

The present invention provides a diagnostic detection device for detecting an RF signal outputted from an antenna, wherein an RF signal transmitted from a repeater is received and outputted as the RF signal into the air by means of the antenna via a transmission line. The diagnostic detection device may comprise: a broadband energy harvester coupling an RF signal transmitted via the transmission line to acquire RF power for each of a plurality of broadband bands; an energy management system managing the RF power acquired via the broadband energy harvester and storing the RF power as DC energy; and a communication module having a corresponding power detection port monitoring a DC voltage for each frequency band of the broadband energy harvester, and monitoring output power in each frequency band via the power detection port.

To provide an improved distributed antenna system.SOLUTION: A distributed antenna system (DAS) according to one embodiment includes an indoor radio device in which antennas for transmitting and receiving radio communication waves in 4G and 5G are accommodated in one housing. In the DAS, a RadioUnit (RU) does not transmit and receive radio waves in all frequency bands in 4G and 5G, but transmits and receives only radio waves in a specific limited frequency band.SELECTED DRAWING: Figure 1

This invention discloses an energy-saving control method, device, electronic equipment, and storage medium for an indoor distributed antenna system. The embodiments of this invention first establish a bypass sampling link parallel to the main data path. Link delay is corrected by using a unified timescale and fiber optic unidirectional delay, and a five-dimensional physical feature vector is constructed to ensure data real-time performance and integrity from the source. Secondly, the five-dimensional physical feature vector is decomposed into service branches and quality branches, and parameter transmission decisions for the bypass sampling link are determined based on these service and quality branches, achieving forward-looking perception of burst traffic and channel fading. Thirdly, a particle search framework is used to uniformly solve for discrete rate levels and continuous sleep frame lengths, supplemented by a risk-driven inertial strategy and online deviation fusion, completing closed-loop self-correction of energy-saving actions on a single control plane. This scheme significantly improves the granularity and decision consistency of energy consumption optimization without sacrificing link delay and throughput.

The invention relates to a method (100) for improved position determination using a distributed antenna system (15), comprising the following steps: - Receiving (101) input data (1, 2, 3) based on at least one measurement resulting from a distance measurement procedure using a distributed antenna system (15), wherein the distance measurement procedure specifies measures for determining a distance dx as a function of a signal propagation with respect to the distance measurement procedure, - Providing (102) at least one neural network model (30), wherein the at least one neural network model (30) specifies a spatial pattern recognition and / or a temporal sequence to process the input data (1, 2, 3), - Combining (103) the input data (1, 2, 3) using at least one neural network model (30) to provide an improved position estimation (5), - Providing (104) a position result (5) based on combining (103).

Exemplary embodiments are disclosed of vehicular adaptive distributed antenna systems (V-ADAS) or distributed antenna farms. In exemplary embodiments, the system may include antennas that are sharable with one or more software defined radio (SDR) instances. In exemplary embodiments, the system may be configured to be operable for dynamic selection of the best antenna(s) for the specific situation, e.g., for high reliability communication and / or power and performance optimization, rural versus urban, shadowing effects of the vehicle itself and / or nearby obstructions, etc. In exemplary embodiments, the system may be configured to power down one or more of the remote active antennas that are not needed.

We provide a distributed antenna system for 5G-specific networks, consisting of Access Units and Remote Units, which efficiently utilize specific frequency bands to provide high-quality communication services within buildings or specific locations. [Solution] The distributed antenna system for 5G-specific networks consists of an access unit 1 and a remote unit 5. The access unit 1 uses a frequency band of 4600 to 4900 MHz, and the remote unit 5 is divided into a first type of remote unit 5 that supports a frequency band of 4600 to 4800 MHz and a second type of remote unit 5 that supports a frequency band of 4700 to 4900 MHz. Either the first type or the second type of remote unit 5 is selected and installed depending on the location of the building.

An RF donor for a DAS is provided, comprising a packetizer and a variety of broadband samplers. The packetizer is configured to packetize DL baseband signals from DL communication signals to a DAS distribution network and to depacket UL baseband signals from UL communication signals on the DAS distribution network. Each broadband sampler is configured to convert DL RF signals with selected carrier frequencies of the DL communication signals into DL baseband signals with selected baseband frequencies, and vice versa. Each broadband sampler includes an RTC broadband DAC for processing the UL communication signals to generate the carrier frequencies within a second Nyquist range. Each broadband sampler communicates with a multitude of operator base station units.

This invention discloses a distributed antenna system, comprising: a base station, and at least one wireless signal coverage device cascaded via a radio frequency cable; the base station is connected to a first-level wireless signal coverage device via a radio frequency cable and transmits the base station radio frequency signal to the first-level wireless signal coverage device; each level of the wireless signal coverage device opens an uplink radio frequency link or a downlink radio frequency link according to the control signal sent by the base station, and amplifies the radio frequency signal.

An aggregation station: receives, from each of the base stations, communication path information with each of accommodated user terminals, for each user terminal; in a case where it is determined that the two of the base stations and the two user terminals are arranged on the straight line, generates first information for performing setting such that a transmission beam of any one of the base stations arranged on the straight line is stopped and another of the base stations non-orthogonally superimposes and multiplexes pieces of transmission data for the two respective user terminals with a predetermined power difference or power ratio; and controls the transmission beam of each of the two of the base stations arranged on the straight line on the basis of the first information.