A PDCP replication function activation method and device, and a terminal and a base station. The activation method comprises: receiving PDCP replication function activation signaling sent by a network, the PDCP replication function activation signaling comprising a data offloading instruction identifier of a radio bearer, the radio bearer being configured with a PDCP duplication function; and determining the number of duplications of a data packet of the radio bearer on the basis of the PDCP replication function activation signaling. By means of the technical solutions provided by the present invention, a multi-connectivity PDCP duplication function can be effectively and flexibly activated.

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 method for transmitting signals by a UE configured with two or more transmission paths of one radio bearer (RB) in a wireless communication system is disclosed. The method comprises detecting a stuck problem in one transmission path of the two or more transmission paths; transmitting an indicator related to the stuck problem to a network; and resetting a protocol entity of the transmission path having the stuck problem, wherein the stuck problem comprises a difference between the sequence number (SN) of the data unit transmitted by the transmission path having the stuck problem and the SN of the data unit transmitted by another transmission path being larger than a threshold.

A communication system includes multiple distributed antenna circuits and an access point (AP). The AP is coupled to the distributed antenna circuits and includes multiple transmit chains, multiple receive chains, and an antenna control circuit communicatively coupled to the transmit chains and the receive chains. The antenna control circuit is configured to determine a subset of the distributed antenna circuits to communicatively couple to at least some of the transmit chains to transmit data to a wireless station (STA) that is in range of the subset. A corresponding method includes determining the subset to communicatively couple to the at least some of the transmit chains of the AP. The method includes communicatively coupling the subset to the at least some of the transmit chains. The method includes directing the data from the at least some of the transmit chains to the subset of the distributed antenna circuits.

A mixer for mixing a radio frequency signal is described. The mixer includes a local oscillator input, a phase adjustment module, and at least one mixing channel. The local oscillator input is configured to receive a local oscillator signal. The phase adjustment module is configured to control a phase of the local oscillator signal in order to add a desired amount of delay to the local oscillator signal, thereby generating at least one adapted oscillator signal. The at least one adapted oscillator signal has a desired phase difference compared to the local oscillator signal. The at least one mixing channel includes at least one mixer unit having at least one signal input. The at least one mixing channel is configured to receive the at least one adapted oscillator signal. The at least one mixing channel further is configured to forward the adapted oscillator signal to the mixer unit. The at least one signal input is configured to receive an input signal. The at least one signal input further is configured to forward the input signal to the mixer unit. The mixer unit is configured to mix the at least one adapted oscillator signal with the input signal, thereby generating a mixer output signal.

A communications network system is disclosed. The system may include a central processing unit (CPU) in data communication with a first access point (AP) configured to enable a data communication between the CPU and a first user equipment (UE). The CPU may include a processor configured to select a first group of APs including the first AP, establish a first data communications link over a first frequency band between the CPU and the first AP, cause the first AP to establish a second data communications link over a second frequency band between the first AP and the first UE, and transmit a portion of data to the first AP over the first data communications link. The first data communications link may be a wireless data communications link. The first frequency band may include higher frequency levels than those of the second frequency band.

Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Codewords are associated with cyclic redundancy checks (CRCs) for detecting errors, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.

Artificial intelligence procedures are disclosed for localizing faults in corrupted messages in 5G and 6G, and for correcting those faults based on measured parameters such as backgrounds and message signals. Message faults can be caused by noise or interference from a variety of sources with a wide range of properties. An AI model with multiple adjustable variables may be “trained” using a large number of message events, including faulted messages, to determine which message elements are likely faulted, based on input parameters such as modulation quality, SNR, and other signal properties. The receiving entity can then attempt a grid search to correct the faulted message elements, or request a retransmission. For field use by base stations and user devices, an algorithm may be developed based on the AI model, and configured to predict which message elements are likely faulted. By detecting and correcting message faults, networks may increase reliability and reduce latency while avoiding most retransmission costs and delays, according to some embodiments.

A communication signal demodulation apparatus demodulates a communication signal to generate an output signal. The communication signal demodulation apparatus includes: plural sensor circuits which sense different electrical characteristics of one same communication signal and generate corresponding sensing modulation signals respectively; plural processing filters which filter the corresponding sensing modulation signals respectively and generate corresponding filtered modulation signals respectively; plural demodulators which demodulate the plural filtered modulation signals and generate corresponding demodulation signals respectively, wherein each of the filtered modulation signals corresponds to at least one of the demodulators; and a determination circuit which receive the plural demodulation signals, determine whether each unit signal of each of the demodulation signals is correct or not according to a determination mechanism, and combine one or more correct unit signals to generate the output signal.

Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Codewords are associated with cyclic redundancy checks (CRCs) for detecting errors, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.