13 results about "Distributed antenna system" patented technology

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.

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.

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.

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.

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.

Techniques are provided for diminishing latency in a DAS fronthaul network configured to convey time-domain transport data, e.g., time-domain digital transport data or time-domain digital data. Other techniques are provided for obtaining higher DAS fronthaul efficiency.

Embodiments described herein relate to a host unit for a distributed antenna system. The host unit includes a first radio access network (RAN) interface module to communicate with a RAN node. The host unit also includes a distribution module configured to distribute transport signals between one or more downstream RJ45 connectors and the first RAN interface module. One or more non-permanent connectors are included to couple the distribution module to a second RAN interface module and one or more upstream RJ45 jacks. The one or more upstream RJ45 jacks are configured to pass Ethernet signals therethrough. The distribution module is configured to couple a downlink portion of the first transport signals and either a downlink portion of the second transport signals or a downlink Ethernet signal from one of the upstream RJ45 jacks to a first twisted pair cable connected to one of one or more downstream RJ45 jacks.

This invention relates to an intelligent diagnostic method and system for indoor distributed antenna system (DAS) links based on RFID. The method includes: sending a preset frequency signal via an excitation signal generation module; recording the feedback strength of passive tags to generate a link status distribution map; extracting signal ratios and fluctuation trends to generate an adjustment instruction set; adjusting power to obtain an alignment status table; identifying signal changes in stable segments to form an adjustment marker map; and finally reconstructing the link response distribution to output a list of status evaluation values. This invention can accurately locate link anomalies, dynamically adjust signal distribution, enhance adaptability to complex scenarios, and significantly improve the efficiency and accuracy of indoor DAS link diagnosis.

Techniques are provided for sidelink positioning with a single anchor using distributed antenna systems. An example method for determining relative locations of two stations includes determining a first round trip time for positioning reference signals transmitted between a first station and a first antenna of a second station, determining a second round trip time for the positioning reference signals transmitted between the first station and a second antenna of the second station, wherein the first antenna and the second antenna are disposed in different locations proximate to the second station, and determining relative locations of the first station and the second station based at least in part on the first round trip time and the second round trip time.

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.

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.