Disclosed is a signal conductor formed as a metal oxide varistor (MOV), the MOV having a first MOV and a second MOV separated by an insulator. In some embodiments, the disclosed signal conductor may be used in a system communicably coupled to a power transmission distribution network, the system capable of launching transverse electromagnetic waves onto a transmission line, where the electromagnetic waves propagating a data signal conveyed to the system by the MOV.

A method for transmitting a reference signal in a multi-antenna system is provided. The method includes: selecting at least one orthogonal frequency division multiplexing (OFDM) symbol in a subframe containing a plurality of OFDM symbols; allocating a channel quality indication reference signal (CQI RS) capable of measuring a channel state for each of a plurality of antennas to the selected at least one OFDM symbol; and transmitting the CQI RS, wherein the CQI RS is allocated to an OFDM symbol which does not overlap with an OFDM symbol to which a common reference signal to be transmitted to all user equipments in a cell or a dedicated reference signal to be transmitted to a specific user equipment in the cell is allocated.

An electronic device provided includes a communication module, an external module, and a signal integration circuit including first to fourth input ports, and first and second output ports. The first input port is for inputting an input signal. The second input port is for inputting a first L1 band signal. The third input port is for inputting a first L5 band signal. The fourth input port is for inputting a second L1 band signal and a second L5 band signal. The first output port selectively outputs a first output signal and a second output signal. The second output port selectively outputs the first L5 band signal and the second L5 band signal. When the fourth input port is not coupled to an external module, the first output port outputs the first output signal, and the second output port outputs the first L5 band signal.

Methods, systems, and devices for channel state information feedback based on full channel estimation are described. The method may include receiving a set of beamformed reference signals from a transmit device via a set of receive beams of the receive device, each beamformed reference signal of the set of beamformed reference signals associated with a corresponding transmit beam of a set of transmit beams of the transmit device, determining, based on the set of beamformed reference signals, a channel matrix representative of a communications channel between the receive device and the transmit device, and transmitting, to the transmit device, channel state information based on the channel matrix.

An airborne RF-head platform system and method. Here, much of the computational burden of transmitting and receiving wireless RF waveforms is shifted from the airborne platform to a ground baseband unit (BBU). The airborne platform, which will often be a high altitude balloon or drone type platform, generally comprises one or more remote radio heads, configured with antennas, A/D and D/A converters, frequency converters, RF amplifiers, and the like. The airborne platform communicates with the ground baseband units either directly via a laser communications link, or indirectly through another airborne relay platform. The airborne RF-head communicates via various wireless protocols to various user equipment such as smartphones by using the BBU and the laser communications link to precisely control the function of the airborne A/D and D/A converters and antennas. This system reduces the power needs, weight, and cost of the airborne platform, and also improves operational flexibility.

A method for transmitting a reference signal in a multi-antenna system is provided. The method includes: selecting at least one orthogonal frequency division multiplexing (OFDM) symbol in a subframe containing a plurality of OFDM symbols; allocating a channel quality indication reference signal (CQI RS) capable of measuring a channel state for each of a plurality of antennas to the selected at least one OFDM symbol; and transmitting the CQI RS, wherein the CQI RS is allocated to an OFDM symbol which does not overlap with an OFDM symbol to which a common reference signal to be transmitted to all user equipments in a cell or a dedicated reference signal to be transmitted to a specific user equipment in the cell is allocated.

A wireless mesh network includes a first wireless access point (WAP) device designated as a primary device, where the first WAP device provides network connectivity to a plurality of client devices over a first dynamic frequency selection (DFS) channel. A second WAP device is designated as a secondary device to the first WAP device on the first DFS channel. In response to detection of a radar event by the first WAP device: the first WAP device transitions to being the secondary device on the first DFS channel; the second WAP device transitions to being the primary device on the first DFS channel; and the second WAP device performs a channel availability check (CAC) on a second DFS channel and communicates availability of the second DFS channel to the first WAP device.

An electronic device provided includes a communication module, an external module, and a signal integration circuit including first to fourth input ports, and first and second output ports. The first input port is for inputting an input signal. The second input port is for inputting a first L1 band signal. The third input port is for inputting a first L5 band signal. The fourth input port is for inputting a second L1 band signal and a second L5 band signal. The first output port selectively outputs a first output signal and a second output signal. The second output port selectively outputs the first L5 band signal and the second L5 band signal. When the fourth input port is not coupled to an external module, the first output port outputs the first output signal, and the second output port outputs the first L5 band signal.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, downlink control information (DCI) associated with transmission configuration information, where the transmission configuration information includes a plurality of indicators of respective reference signals. The UE may communicate, with the base station, based at least in part on the transmission configuration information. The DCI may include a field associated with a transmission configuration indicator (TCI) state that includes the plurality of indicators. As an alternative, the DCI may include at least a first field associated with a first TCI state that includes a first indicator of the plurality of indicators and a second field associated with a second TCI state that includes a second indicator of the plurality of indicators. Numerous other aspects are described.

A plurality of neutral host network (NHN) deployments may share a common evolved packet core (EPC). When a plurality of NHNs share a common EPC, continuity and mobility may be facilitated for a user equipment (UE) when the UE moves between NHNs (e.g., because the NHNs share a common EPC). Accordingly, a UE may perform a tracking area update (TAU) procedure when moving between NHNs that share a common EPC. However, a UE may need to discover whether two NHNs share a common EPC in order to perform a TAU procedure. If the UE discovers that, when moving between a first NHN and a second NHN, the NHNs do not sure a common EPC, the UE may perform an attach procedure.