52 results about "Remote radio head" patented technology

The embodiments of the present application relate to the technical field of radio communications. Provided are a radio-over-fiber communication apparatus, system and method. The radio-over-fiber communication apparatus comprises: an aggregation module, which is coupled to a remote radio head and is used for adjusting the baud rate of a feedback signal to obtain a compatible signal, combining the compatible signal and a received signal, so as to obtain an aggregated signal, and transmitting the aggregated signal by means of an optical fiber link, wherein the feedback signal is used for performing nonlinear compensation on a transmitted signal, and the frequency null of the compatible signal overlaps the frequency point of the received signal; and a splitting module, which is coupled to a baseband unit and is used for acquiring the aggregated signal by means of the optical fiber link, and splitting the aggregated signal into two signals, wherein the two signals are respectively used for the baseband unit to acquire the received signal and the feedback signal. In the solution provided in the present application, existing optical fiber resources in a radio-over-fiber communication system can be used to reduce the cost and power consumption of the system.

A remote radio head assembly is configured to attach a remote radio head to the back wall of an antenna unit. The remote radio head assembly has a top bracket coupled to the top portion of the remote radio head for handling the remote radio head. The top bracket has a protrusion extending towards the back wall of the antenna unit. A side bracket section is coupled to the top side portion of the remote radio head. The side bracket section has a pivot point for receiving an installation lever configured to engage with the remote radio head protrusion at the pivot point to move the remote radio head in downward and upward direction to couple to the connector ports of the antenna unit.

A communication system and method for on-demand establishment of communication infrastructure over the target area comprising multiple Unmanned Aerial Vehicle (UAVs) mounted Flying Remote Radio Heads (F-RRH) (106) to provide communication services over the target area, one or more Static Remote Radio Heads (S-RRH) (102), one or more Base Band unit (BBU) antennas (103), optical fronthaul link (104) for connecting the S-RRH (102) and the BBU antennas (103) to a BBU-pool (101) and transceiver module on the F-RRH (106) for connecting with BBU antennas (103) through a dedicated optical fronthaul link (104) and / or connecting with transceiver module on the S-RRH (102) through an extended wireless fronthaul link (108), whereby each of the F-RRH transceiver modules is enabled for an opportunistic fronthauling which associates the F-RRH to its nearest working S-RRH for faster establishment of the fronthaul link though spectrum prediction and sensing.

A system is provided for at least one of testing and validating at least one Open Radio Access Network (O-RAN) remote radio head (RRH) present for installation at an installation site having no network connectivity to the RRH available, which system includes a network emulator configured to at least one of test and validate at least one of a device parameter and a functional parameter of the at least one RRH when selectively coupled to the at least one RRH. The network emulator is configured to be selectively coupled to a user equipment (UE) configured for displaying the at least one of the device parameter and the functional parameter of at least one RRH, and wherein the network emulator is one of 1) directly coupled to the at least one RRH, or 2) connected to the at least one RRH via a cell site router (CSR).

The present application relates to the technical field of communications, and discloses a positioning method and a communication apparatus. The method comprises: a network device determining first information corresponding to a first anchor point; the network device sending the first information to a first terminal; and the first terminal obtaining positioning information on the basis of the first information. The first information comprises one or more of the following: first position information, first time delay information, or first angle information. The first anchor point is one of the following anchor points: a first access network device, a mirror of the first access network device, an antenna of the first access network device, a mirror of the antenna of the first access network device, a remote radio head of the first access network device, a mirror of the remote radio head of the first access network device, and a wireless signal scatterer in a wireless signal propagation process of the first access network device or a mirror thereof. On the basis of the described method, the accuracy of terminal positioning can be improved.

Disclosed are a positioning method and a communication device, the method relating to the technical field of communications, the method comprising: a network device determining first information corresponding to a first anchor point; the network equipment sends first information to the first terminal; and the first terminal obtains positioning information based on the first information. Wherein the first information comprises one or more of the following information: first position information, first time delay information or first angle information. The first anchor point is one of the following anchor points: first access network equipment, a mirror image of the first access network equipment, an antenna of the first access network equipment, a mirror image of the antenna of the first access network equipment, a remote radio head of the first access network equipment and a mirror image of the remote radio head of the first access network equipment; the wireless signal scatterer or the mirror image of the wireless signal scatterer in the wireless signal propagation process of the first access network equipment. Based on the method, the terminal positioning precision can be improved.

An apparatus and method for high heat functionality testing of a remote radio head unit is shown and described. The apparatus includes a chamber having a door and a plurality of walls creating an interior volume. At least two vents attached to the chamber such that air can enter and exit the chamber. A computer operably coupled to an apparatus system. A thermometer secured within the chamber which is operably coupled to the computer via the apparatus system. At least one fan secured to at least one of the vents. Each of the at least one fan is operably coupled to the computer via the apparatus system. A plurality of electrical and network connections to allow for a remote radio head unit to be operably coupled to the electrical connections and receive proper power and to be operably coupled to the computer via the apparatus system through the network connections.

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.

An RRU bracket assembly for attachment to a tower frame pole. According to a preferred embodiment, the RRU bracket assembly of the present invention includes a front bracket plate and a rear bracket plate placed on either side of the frame pole and which are secured to the frame pole via one or more securing rods which are inserted through the front and rear bracket plates and tightened to create a frictional fit with the frame pole. The front bracket plate preferably includes an upper connection plate and a lower connection plate with each connection plate having bolt slots for allowing adjustable spacing between a right side wall and a left side wall.

An air to ground (ATG) communication system testing platform may be configured to operably couple a base station to an aircraft base radio in a lab environment. The testing platform may include a position simulator and a channel simulator. The position simulator may be configured to generate simulated aircraft position information and communicate the simulated aircraft position information to an aircraft base radio and a base band unit of the base station. The channel simulator may operably couple a remote radio head of the base station to the aircraft base radio, and may be configured to emulate channel conditions with respect to transmission of signaling generated by the remote radio head for communication to the aircraft base radio based on the emulated channel conditions.

The system scans a RAN associated with a wireless telecommunication network to obtain an indication of a hardware status and a software status associated with the RAN. The system determines whether there is an update to the hardware or software status associated with the RAN. Upon determining there is the update, the system obtains from a first database an indication of a remote radio head configured to test the update. Based on the indication of the remote radio head, the system obtains from a second database multiple UEs configured to test the update. The system tests the update by causing the remote radio head to send a communication to a UE among the multiple UEs. The system obtains logs associated with the communication and, based on the logs, determines whether the update passes the tests.

Described are concepts, systems and techniques for detecting whether an impedance mismatch exists at an output port of a remote radio head (RRH) or at an output port of a radio frequency (RF) amplifier in an RRH such as may be caused by a faulty connection between an antenna and a transmit signal path of the RRH. Also described are means for protecting an RF amplifier or other active RF device in the transmit signal path from damage due to such a faulty connection.

An air to ground (ATG) communication system testing platform may be configured to operably couple a base station to an aircraft base radio in a lab environment. The testing platform may include a position simulator and a channel simulator. The position simulator may be configured to generate simulated aircraft position information and communicate the simulated aircraft position information to an aircraft base radio and a base band unit of the base station. The channel simulator may operably couple a remote radio head of the base station to the aircraft base radio, and may be configured to emulate channel conditions with respect to transmission of signaling generated by the remote radio head for communication to the aircraft base radio based on the emulated channel conditions.

The present invention discloses a passive intelligent reflector-assisted cloud access network communication perception method. This method enables interference management within the geographical coverage of distributed remote radio heads (RRHs) through the centralized information processing achieved through the cloud radio access network (C‑RAN). By jointly processing baseband signals at the BBU pool, an effective means of implementing network multi-input multi-output (MIMO) in heterogeneous wireless networks is provided. At the same time, the communication and radar perception signals of the dual-function radar system are enhanced by the passive intelligent reflector. The passive intelligent reflector and the beamforming at the RRH are jointly designed so that the reflected signal of the passive intelligent reflector is aligned with the target. This method can obtain the expected reflected beam of the reflector while ensuring the user's signal-to-interference-noise ratio.

A base station antenna device includes an antenna module having a separation space spaced a predetermined distance forward from a support pole, a remote radio head (RRH) provided on the rear surface of the antenna module such that the RRH is slidably assembled in a detachable manner in a horizontal direction from a lateral side of the separation space, and an adapter having a push block provided on a lower end portion of the RRH so as to mediate the electrical signal connection and disconnection between the antenna module and the RRH by means of a pushing operation in the longitudinal direction.

A radio access network element, such as a remote radio head (RRH) comprises at least one processor and at least one memory. The at least one memory stores instructions that, when executed by the at least one processor, cause the radio access network element to: compute a communication delay between the radio access network element and a source of passive intermodulation, based on receiver group delay information for the radio access network element in the bandwidth of the passive intermodulation; and determine a distance between the source of passive intermodulation and the radio access network element based on the communication delay.

A remote radio head assembly is configured to attach a remote radio head to the back wall of an antenna unit. The remote radio head assembly has a top bracket coupled to the top portion of the remote radio head for handling the remote radio head. The top bracket has a protrusion extending towards the back wall of the antenna unit. A side bracket section is coupled to the top side portion of the remote radio head. The side bracket section has a pivot point for receiving an installation lever configured to engage with the remote radio head protrusion at the pivot point to move the remote radio head in downward and upward direction to couple to the connector ports of the antenna unit.

In a first embodiment, a multi-radio access technology (multi-RAT) or 5G-only or 4G-only remote radio head (RRH) is disclosed, wherein the RRH is equipped with functionality and capability enabling it to measure total power usage from the entire RRH, or according to various granularities. In a second embodiment, a network architecture for providing cluster-level optimization of power is disclosed. The network architecture may include a non-RT SMO that provides optimizations based on measurements from various cells, which may incorporate data about total power usage of each cell. In some embodiments a heatmap may be used. In a third embodiment, techniques for calibrating power amplifiers in radio heads are disclosed, including calibration to specific use cases, calibration based on power envelope tracking, and calibration to a fixed number of set points.

A remote radio head assembly attaches a remote radio head to the back wall of an antenna unit. The remote radio head assembly has a radio bracket attached to the top of the radio head having a handle for lifting and carrying the radio head. Radio guide spacers attached to the back side of the remote radio head are for sliding the remote radio head along a mounting rail attachment disposed on the back wall of the antenna unit. The mounting rail has a pivot hook for receiving an installation lever configured to engage with the handle to move the remote radio head in downward and upward directions so as to couple the connector ports of the antenna unit.

Methods and apparatuses for interference management in a wireless communication system. A method for operating a user equipment (UE) includes receiving configuration information about I. I is interference information for interfering Nint remote radio heads (RRHs), where Nint≤N−1. The configuration information indicates a number of RRHs, N>1. The method further includes determining, based on the interference information I, a downlink (DL) spatial filter using P antenna ports, where P>1, and receiving DL data using the determined DL spatial filter.

A method for operating a user equipment (UE) comprises receiving information about a downlink (DL) transmission transmitted from NRRH>1 RRHs, wherein: NRRH=number of remote radio heads (RRHs), RRH r comprises a group of antenna ports, and r=1, . . . , NRRH; receiving the DL transmission; and decoding the information about the DL transmission; wherein the DL transmission is based on a scheme that is a combination of a precoding scheme and a diversity scheme, wherein the precoding scheme corresponds to applying an intra-RRH precoder component to antenna ports within an RRH, and wherein the diversity scheme corresponds to applying an inter-RRH diversity component to antenna ports across RRHs.

Disclosed is a power distribution system for powering a plurality of remote radio heads mounted on the top of a cell tower. The distribution system includes a plurality of bulk power inputs, each of which is coupled to a row of power input sockets, and a plurality of breaker input socket rows. The power input socket rows and breaker input socket rows are arranged such that they are evenly spaced and the sockets are in columns. The system includes a plurality of jumpers that are designed to be installed such that multiple combinations of connections between bulk power inputs and circuit breaker inputs such that the system can be easily reconfigured.

The invention discloses a hybrid precoding method based on a low-dimensional discrete soft actor commentator, which comprises the following steps of: obtaining an analog precoder and a service user selected by each remote radio head (RRH) according to channel state information (CSI) of each user and each RRH and a D-SAC reinforcement learning algorithm of the low-dimensional discrete soft actor commentator; pilot channel estimation is carried out according to the analog precoder selected by each RRH, and an equivalent estimation channel from each RRH to a corresponding service user is obtained; and obtaining a digital precoder and a forward compression noise covariance matrix in a central baseband processing unit (BBU) through a fractional programming algorithm on the basis of a user of each RRH selection service and an equivalent estimation channel, thereby completing the design of the hybrid precoder. According to the method, channel estimation, forward capacity limitation under a C-RAN architecture and tradeoff of exploration and maximization optimization targets are considered at the same time, so that the problems of constant modulus constraint and large variable space of a simulation domain are solved.

An enhanced protocol for addressing communication issues arising from using a Remote Radio Head (RRH). An Access Point (AP), denoted as Remote Radio Head (RRH) AP, consists of a Central Unit (CU) and at least one RRH that can be located remotely. The functionalities of the Medium Access Control (MAC) and the Physical (PHY) layers of the RRH AP are split between the CU and RRH; with the CU exchanging frames between the MAC layers, and the RRH transmitting and receiving the physical signals through the channel.

Described are concepts, systems and techniques for dividing a communication channel such that no single radio frequency (RF) power amplifier (PA) in a remote radio head (RRH) operates over an excessively wide frequency bandwidth. This allows efficient operation of the RF PA wherein each PA transmit path is tuned for operation at a respective one of a plurality of different center frequencies (f0, f0+Δf, . . . f0+(n−1) Δf where n is an integer corresponding to the number of RF PA transmit paths.

A remote radio head unit tester and a method for testing a remote radio head unit is shown and described. The remote radio head tester includes a chamber having an interior volume. The chamber encloses electrical components, at least one of the electrical components is a computer which has a testing algorithm installed thereon. A frame secured to the chamber. At least one set of wires operably coupled with the electrical components. The remote radio head unit tester is configured to test a remote radio head unit by booting up the remote radio head unit. The remote radio head unit can only be booted up after the correct power cables and data cables have been connected to the remote radio head unit. Checking the software version of the remote radio head unit and updating the software. Testing the power connections of the remote radio head unit.

Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE), generally including receiving assistance information, from a network entity, indicating a mapping between beams across different remote radio heads (RRHs) and using the assistance information to perform beam management when the UE is moving from the coverage area of one RRH to the coverage area of another RRH.

A method for facilitating Coordinated Multipoint Transmission (COMP) involving joint scheduling of wireless access and Time Wavelength Division Multiplexing-Passive Optical Network (TWDM-PON) based fronthaul for COMP joint transmission comprising identifying dependency of wireless access data rate with the number of Front-Haul (FH) optical wavelengths in the TWDM-PON based Cloud-Radio Access Network (C-RAN) model, maintaining synchronization in the FH while transmitting copies of streams through Coordinated Multipoint Reception (COMP) Remote Radio Heads (RRHs) through respective Optical Network Units (ONUs) by necessary changes in the Multi Point Control Protocol (MPCP) and cycle time modification to achieve faithful reconstruction of signals at the ONU including HARQ retransmissions through modifications in Media Access Control (MAC) layer.

Aspects of the present disclosure relate to a method for exchanging data between a baseband unit (BBU) and a remote radio unit (RRU) (or a remote radio head (RRH) or an active antenna unit (AAU)) that supports reducing the complexity of mathematical operations performed at the RRU / RRH / AAU. Aspects of the present disclosure relate to a method for exchanging data between a BBU and an RRU (or (RRH or AAU)) that supports reducing the transmission bandwidth between the BBU and the RRU / RRH / AAU.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a remote radio head (RRH), a protocol configuration, wherein the protocol configuration configures the RRH to perform one or more MAC protocol layer functions of the UE. The UE may perform a communication, wherein one or more higher layer functions associated with the communication are performed by the UE, wherein the one or more higher layer functions are associated with a higher layer than the MAC protocol layer. Numerous other aspects are described.