Various solutions for uplink control channel design for high reliability transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a downlink signal from a network node. The apparatus may determine a first configuration to transmit an acknowledgement (ACK). The apparatus may determine a second configuration to transmit a negative acknowledgement (NACK). The apparatus may transmit the NACK to the network node in response to unsuccessful detection of the downlink signal. The second configuration may be different from the first configuration.

In a communication device, a multi-carrier signal with at least one group of signal carriers is received from a communication connection. For each of the signal carriers, at least one individual error value is evaluated or generated. From the individual error values, a combined error value is evaluated or generated. The combined error value is transmitted on a backchannel of the communication connection.

In a communication device, a multi-carrier signal with at least one group of signal carriers is received from a communication connection. For each of the signal carriers, at least one individual error value is evaluated or generated. From the individual error values, a combined error value is evaluated or generated. The combined error value is transmitted on a backchannel of the communication connection.

This disclosure relates to orthogonal frequency division multiple access (OFDMA) communication in wireless local area networks (WLANs). According to some embodiments, a downlink OFDMA frame may be transmitted. An uplink OFDMA frame including acknowledgements associated with the downlink OFDMA frame may be received. The uplink OFDMA frame may be processed, in some instances including determining which devices receiving the downlink OFDMA frame transmitted an acknowledgement associated with the downlink OFDMA frame in the uplink OFDMA frame.

This disclosure relates to orthogonal frequency division multiple access (OFDMA) communication in wireless local area networks (WLANs). According to some embodiments, a downlink OFDMA frame may be transmitted. An uplink OFDMA frame including acknowledgements associated with the downlink OFDMA frame may be received. The uplink OFDMA frame may be processed, in some instances including determining which devices receiving the downlink OFDMA frame transmitted an acknowledgement associated with the downlink OFDMA frame in the uplink OFDMA frame.

Provided is a method and device for switching a primary/backup PW. When a primary PW is detected having changed into a Down status by a BFD session corresponding to the primary PW, PE searches for a matching switching information entry. When in the switching information entry indicates transmission switching is supported, and Failover value indicates that a packet is forwarded via a backup PW, the PE updates Failover value in a hardware protection switching entry to the Failover value in the switching information entry. When bRX in the switching information entry indicates reception switching is supported, the PE updates drop identifier in a hardware reception entry to a value indicating that a packet is received, and updates the bFS to a value indicating that transmission switching is not supported; and the PE reports a Down event of the primary PW.

Provided is a method and device for switching a primary/backup PW. When a primary PW is detected having changed into a Down status by a BFD session corresponding to the primary PW, PE searches for a matching switching information entry. When in the switching information entry indicates transmission switching is supported, and Failover value indicates that a packet is forwarded via a backup PW, the PE updates Failover value in a hardware protection switching entry to the Failover value in the switching information entry. When bRX in the switching information entry indicates reception switching is supported, the PE updates drop identifier in a hardware reception entry to a value indicating that a packet is received, and updates the bFS to a value indicating that transmission switching is not supported; and the PE reports a Down event of the primary PW.

A resource scheduling method of a wireless communication system is provided. The resource scheduling method includes the following steps. Each of the user equipment (UEs) is classified by a centralized scheduler as a cell-edge UE or a non cell-edge UE. A first scheduling is performed by the centralized scheduler by allocating a first resource for the cell-edge UEs, a second resource for the non cell-edge UEs, and a third resource for retransmission of at least one of the cell-edge UEs. A second scheduling is performed by a distributed scheduler by allocating a first part of the second resource for at least one of the non cell-edge UEs.

A resource scheduling method of a wireless communication system is provided. The resource scheduling method includes the following steps. Each of the user equipment (UEs) is classified by a centralized scheduler as a cell-edge UE or a non cell-edge UE. A first scheduling is performed by the centralized scheduler by allocating a first resource for the cell-edge UEs, a second resource for the non cell-edge UEs, and a third resource for retransmission of at least one of the cell-edge UEs. A second scheduling is performed by a distributed scheduler by allocating a first part of the second resource for at least one of the non cell-edge UEs.

Embodiments are disclosed of methods performed at an optical transmitter, devices and computer-readable storage media. For example, the method includes performing a process to select a PAM value from a set of candidate PAM values based on currently transmitted training data bits, transmitted Pulse Amplitude Modulation (PAM) values corresponding to previously transmitted training data bits, and training data bits to be transmitted subsequently, the selected PAM value corresponding to the currently transmitted training data bits. The selected PAM value is transmitted to an optical receiver, and an indication as to whether the optical receiver correctly detects the currently transmitted training data bits is received from the optical receiver. Then, the process is updated at least in part based on the indication. The manner of performing neural network learning at an optical transmitter side to obtain an encoding strategy can maximize the channel allowable capacity.