A radio frequency circuit includes: a first filter having a first passband that corresponds to a portion of a frequency range of a first communication band allocated as a communication band for TDD; a second filter having a second passband that corresponds to a portion of the frequency range of the first communication band, the second passband being different from the first passband; a power amplifier that amplifies a transmission signal in the first communication band; a low-noise amplifier that amplifies a reception signal in the first communication band; and a switch that switches between connecting the first filter and the power amplifier and connecting the first filter and the low-noise amplifier, and switches between connecting the second filter and the power amplifier and connecting the second filter and the low-noise amplifier.

The present disclosure relates to methods and apparatuses. According to some embodiments of the disclosure, a method includes: receiving configuration information at a communication device, wherein the configuration information indicates routing configuration and bearer mapping configuration; detecting a failure on a first egress link between the communication device and a first next hop communication device of the communication device; re-routing first data intended to be transmitted on the first egress link, wherein the first data has not been acknowledged by a layer lower than a BAP layer of the communication device; reselecting a second egress link between the communication device and a second next hop communication device based on the routing configuration; reselecting an egress RLC channel of the second egress link based on bearer mapping configuration; and submitting the first data to the reselected egress RLC channel of the second egress link.

A transceiver having a transceiver including a down-converter for converting a radio-frequency (RF) input signal to an intermediate frequency (IF) signal with an analog low latency bypass path coupled to the IF signal and configured to provide a low latency IF signal. There is a digital path coupled to the IF signal and configured to provide a digitally processed IF signal, and an up-converter for converting at least one of the low latency IF signal and the digitally processed IF signal to an RF output signal. In a further example, the down-converter and the up-converter convert to millimeter wave frequencies and filters the millimeter wave frequencies with cavity filters comprising quartz.

A transceiver having a down-converter for converting a radio-frequency (RF) input signal to an intermediate frequency (IF) signal with an analog low latency bypass path coupled to the IF signal and configured to provide a low latency IF signal and an up-converter for converting an IF signal to an RF signal. There is a digital path coupled to the IF signal and configured to provide a digitally processed IF signal, and an up-converter for converting at least one of the low latency IF signal and the digitally processed IF signal to an RF output signal. In a further example, the down-converter and the up-converter convert to millimeter wave frequencies and filters the millimeter wave frequencies with cavity filters.

A data packet, that is to be transmitted in a dual connectivity (DC) or carrier aggregation (CA) based communications system, may include an indication to indicate whether the data packet is configured to be transmitted in a first frequency of a first carrier or a second frequency of a second carrier, and be transmitted, by a communication device, in the first frequency or the second frequency based on the indication. A data packet in the communications system may also be transmitted first in a first frequency higher than a second frequency, and then be retransmitted in the second frequency upon transmission failure of the data packet in the first frequency.

A wireless backhaul resiliency system incorporating a mesh network is disclosed, comprising: a first base station utilizing a first mesh network node for a first wide area network (WAN)/backhaul connection and having a first wireless mesh functionality; and a second base station utilizing a second mesh network node for a second WAN/backhaul connection and having a second wireless mesh functionality, wherein the first base station is configured to detect when the first WAN/backhaul connection fails and fail over to a wireless mesh connection between the first wireless mesh functionality at the first base station and the second wireless mesh functionality at the second base station, thereby forwarding data from the first base station to a core network via the wireless mesh connection, the second mesh network node, and the second WAN/backhaul connection in the event of a failure.

A method for beam failure recovery in a communication network may include detecting a beam failure based on a downlink transmission at a user equipment (UE) in an inactive state, and performing a beam failure recovery (BFR) procedure at the UE in the inactive state based on detecting the beam failure. The downlink transmission may include a reference signal. The reference signal may include a synchronization signal block, The reference signal may include a channel state information reference signal. Detecting the beam failure may include detecting the beam failure based on a beam failure measurement configuration. The method may further include receiving the beam failure measurement configuration at the UE. The UE may receive the beam failure measurement configuration based on a preconfigured uplink resources (PUR) response. The UE may receive the beam failure measurement configuration based on a system information block (SIB) transmission.

A system for transmitting and receiving radio signals is disclosed. The system includes a controller having a modem and a transmission amplifier module connected to the modem, an antenna unit arranged at a distance from the controller and having an antenna and a reception amplifier module connected to the antenna, and a high-frequency cable connecting the controller and the antenna unit.

A wireless backhaul resiliency system incorporating a mesh network is disclosed, comprising: a first base station utilizing a first mesh network node for a first wide area network (WAN)/backhaul connection and having a first wireless mesh functionality; and a second base station utilizing a second mesh network node for a second WAN/backhaul connection and having a second wireless mesh functionality, wherein the first base station is configured to detect when the first WAN/backhaul connection fails and fail over to a wireless mesh connection between the first wireless mesh functionality at the first base station and the second wireless mesh functionality at the second base station, thereby forwarding data from the first base station to a core network via the wireless mesh connection, the second mesh network node, and the second WAN/backhaul connection in the event of a failure.

A method for beam failure recovery in a communication network may include detecting a beam failure based on a downlink transmission at a user equipment (UE) in an inactive state, and performing a beam failure recovery (BFR) procedure at the UE in the inactive state based on detecting the beam failure. The downlink transmission may include a reference signal. The reference signal may include a synchronization signal block, The reference signal may include a channel state information reference signal. Detecting the beam failure may include detecting the beam failure based on a beam failure measurement configuration. The method may further include receiving the beam failure measurement configuration at the UE. The UE may receive the beam failure measurement configuration based on a preconfigured uplink resources (PUR) response. The UE may receive the beam failure measurement configuration based on a system information block (SIB) transmission.