35 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.

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 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.

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.

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 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.

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.

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.

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.

A base station selects a subset of at least one geographically separated antennas for each of the plurality of user equipments. The base station forms at least layer of data stream including modulated symbols, precodes the data stream via multiplication with the NT-by-N precoding matrix where N is the number of said layers and NT is the number of transmit antenna elements and transmits the precoded layers of data stream to the user equipment via the selected geographically separated antennas. The base station signals the subset of the plurality of geographically separated antennas via higher layer Radio Resource Control or via a down link grant mechanism. The base station optionally does not signal the subset of the plurality of geographically separated antennas to the corresponding mobile user equipment.

A power boost retrofit system for a power communications system having an existing base overvoltage protection unit, where one end of DC power cables is connected to remote radio heads (RRHs). The power conversion retrofit system includes one or more pluggable DC voltage conversion (DCVC) modules containing DC-DC converters are inserted into respective slots in a front of an enclosure of the base overvoltage protection unit. A connectivity and control (CC) module is inserted into a rear of the enclosure to mate with the DCVC modules and to connect with an opposite end of DC power cables.

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.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a message that includes an indication that a transmission configuration indicator (TCI) state switch for the UE is to be across a serving remote radio head (RRH) and a next RRH. The UE may adjust a tracking of the UE with respect to the serving RRH and the next RRH based at least in part on the indication. Numerous other aspects are described.

Systems, methods and computer software are disclosed for providing base station and Remote Radio Head (RRH) functionality. In one embodiment, a method is disclosed, the method for providing base station and Remote Radio Head (RRH) functionality in a base station, comprising: providing a baseband card; providing a radio head, the radio head coupled to the baseband card by way of an interface; and switching, under the control of a processor, between use of the baseband card and use of an external baseband unit for controlling the radio head, the external baseband unit used via a Common Public Radio Interface (CPRI) port, thereby providing dual base station and remote radio head functionality.

In some aspects, a user equipment (UE) may receive a message that includes an indication that a transmission configuration indicator (TCI) state switch for the UE is to be across a serving remote radio head (RRH) and a next RRH. The UE may adjust a tracking of the UE with respect to the serving RRH and the next RRH based at least in part on the indication. Numerous other aspects are described.

Systems, methods and computer software are disclosed for providing base station and Remote Radio Head (RRH) functionality. In one embodiment, a method is disclosed, the method for providing base station and Remote Radio Head (RRH) functionality in a base station, comprising: providing a baseband card; providing a radio head, the radio head coupled to the baseband card by way of an interface; and switching, under the control of a processor, between use of the baseband card and use of an external baseband unit for controlling the radio head, the external baseband unit used via a Common Public Radio Interface (CPRI) port, thereby providing dual base station and remote radio head functionality.

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.

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.

Techniques for putting power amplifiers in a radio access network remote radio head (RRH) to sleep, for longer times and with more brief windows, are described. These techniques include, in one embodiment, sending a bitmap of power amplifier on-off states to the RRH from the scheduler, and, in another embodiment, packing symbols into a shorter period time at the scheduler to enable longer sleep periods at the power amplifier.

A base station selects a subset of at least one geographically separated antenna for a user equipment based on a rate of motion of the user equipment. The base station forms at least one layer of data stream including modulated symbols, precodes the at least one layer of data stream into one or more data streams via a linear transformation, and transmits the one or more data streams to the user equipment via the selected subset of at least one geographically separated antenna. In some examples, the base station semi-statically selects the subset of at least one geographically separated antenna for the user equipment in response to the rate of motion less than a predetermined amount; otherwise, dynamically selects the subset of at least one geographically separated antenna for the user equipment.