In one aspect, a wireless device receives a scheduling grant and a grant confirmation signal indicating that a network node has performed a CCA on a carrier and is releasing the carrier for the wireless device. An uplink message is transmitted on the carrier without performing a CCA on the carrier. In another aspect, a wireless device is connected to a first cell and a second cell configured on a carrier requiring an LBT protocol. The wireless device receives configuration messages indicating that downlink transmissions on the second cell are to be scheduled. This can mean self-scheduling for downlink on the second cell and cross-carrier scheduling for uplink on the first cell. The wireless device receives a scheduling grant in the first cell and performs a CCA in the second cell. The wireless device then transmits an uplink message responsive to success of the CCA.

Aspects described herein relate to a base station for providing air-to-ground wireless communication over various altitudes. The base station includes a first antenna array comprising one or more antennas configured to form a first cell coverage area extending substantially from a horizon up to a first elevation angle away from the first antenna array to a predetermined distance from the first antenna array. The base station further includes a second antenna array configured at an uptilt elevation angle to form a second cell coverage area extending at least from the first elevation angle to a second elevation away from the second antenna array, wherein the first cell coverage area and the second cell coverage area are concentric to define the ATG cell at least to the predetermined distance and up to a predetermined elevation.

A network device is provided. The network device includes one or more memories and one or more processors coupled to the one or more memories. The one or more processors are configured to one or more of receive the DL MU PPDU, decode a data frame from the DL MU PPDU, determine whether an acknowledgement (ACK) policy indicated in the MAC header signals a trigger-based immediate acknowledgement policy, and determine whether a trigger indication for an uplink (UL) MU transmission has been obtained from a payload of a data frame. In response to the processor determines that the ACK policy indication signals the trigger-based immediate acknowledgement policy and determines that the trigger indication has been obtained, the processor is configured to transmit a trigger-based immediate acknowledgement frame to the AP in an UL MU PPDU, based on the trigger indication. In response to the processor determines that the ACK policy signals the trigger-based immediate acknowledgement policy and determines that the trigger indication has not been obtained, the processor is configured to not transmit an immediate acknowledgement to the access point.

Methods and devices in a wireless communication system are provided. A radio resource control (RRC) reconfiguration message configuring a medium access control (MAC) parameter for the terminal, is received from a base station. An uplink grant on a physical downlink control channel (PDCCH) is received from the base station. A generation of a MAC protocol data unit (PDU) is skipped for the uplink grant in case that skip uplink transmission information indicating the terminal to skip an uplink transmission is configured in the RRC reconfiguration message, the PDCCH is addressed to a cell radio network temporary identifier (C-RNTI), a MAC service data unit (SDU) for the MAC PDU does not exist, and the MAC PDU includes only a padding buffer status report (BSR).

Methods and devices in a wireless communication system are provided. A radio resource control (RRC) reconfiguration message configuring a medium access control (MAC) parameter for the terminal, is received from a base station. An uplink grant on a physical downlink control channel (PDCCH) is received from the base station. A generation of a MAC protocol data unit (PDU) is skipped for the uplink grant in case that skip uplink transmission information indicating the terminal to skip an uplink transmission is configured in the RRC reconfiguration message, the PDCCH is addressed to a cell radio network temporary identifier (C-RNTI), a MAC service data unit (SDU) for the MAC PDU does not exist, and the MAC PDU includes only a padding buffer status report (BSR).

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for managing a hybrid automatic repeat request (HARM) process of a base station in a mobile communication system according to an embodiment of the present disclosure includes confirming whether a first data corresponding to a first service and a second data corresponding to a second service collide with each other. The method also includes determining whether to toggle a new data indicator (NDI) based on a modulation and coding scheme (MCS) index and the number of physical resource block (PRB) if it is determined that the first data and the second data collide with each other and retransmitting the NDI and the first data according to the determination result.

At least one hardware processor (111) in a wireless access point (110) in a first local network (120) managed by the wireless access point (110) routes traffic between wireless devices (121, 122) in the first local network (120) and a second network via a first interface (113, 114) configured for communication with wireless devices (121, 122) in the first local network (120) and a second interface (115) configured for communication with the second network and, upon determination that communication via the second interface (115) is impossible, connects (S460) through a third interface (113, 114) to a second wireless access (130) point as a wireless device in a second local network (140) managed by the second wireless access point (130) and routes (S470) traffic between the wireless devices (121, 122) in the first local network (120) and the second network via the first interface (113, 114) and the third interface (113, 114). This way a back-up connection can be provided.

An electronic device may receive installation information about an environment of the electronic device. For example, the installation information may include a type of installation of the electronic device, such as one of: installation on a wall, installation on a pole, installation in a stadium, or installation in street furniture. Based at least in part on the installation information, the electronic device may select a group of antenna patterns that includes a subset of potential antenna patterns. Then, the electronic device communicates, via an interface circuit in the electronic device, one or more packets or frames for another electronic device using an antenna pattern in the group of antenna patterns. Note that the electronic device may determine the antenna pattern to use in subsequent communication. Moreover, the group of antenna patterns may be selected based at least in part on an orientation and/or a location of the electronic device.

An electronic device may receive installation information about an environment of the electronic device. For example, the installation information may include a type of installation of the electronic device, such as one of: installation on a wall, installation on a pole, installation in a stadium, or installation in street furniture. Based at least in part on the installation information, the electronic device may select a group of antenna patterns that includes a subset of potential antenna patterns. Then, the electronic device communicates, via an interface circuit in the electronic device, one or more packets or frames for another electronic device using an antenna pattern in the group of antenna patterns. Note that the electronic device may determine the antenna pattern to use in subsequent communication. Moreover, the group of antenna patterns may be selected based at least in part on an orientation and/or a location of the electronic device.

Embodiments of the present disclosure provide techniques for determining synchronization signal (SS)/physical broadcast channel (PBCH) block (SSB)-based measurement timing configuration (SMTC) for measurement objects for which a user equipment is to measure feedback information in one or more measurement gaps. Other embodiments may be described and claimed.