Disclosed systems and methods mitigate interference in heterogeneous networks. Embodiments include adaptive or selective inter-cell interference coordination, adaptive multi-user zero forcing, adaptive power, and/or combinations of the foregoing. Techniques may be used to favor one group of users (e.g., femto users or macro users) over another. Certain embodiments focus quality of service (QoS) improvements on a first group of users, while using constraint processes to provide a threshold QoS for a second group of users.

This disclosure provides systems, methods and apparatus for assisting a user equipment (UE) with balancing quality of service (QoS) requirements (such as access latency or reliability requirements) and consumption of high priority network resources (such as for load balancing) when transmitting a random access message (RAM) in a two-step random access channel (RACH) procedure. As a result, the UE may be capable of satisfying QoS requirements for the RAM while reducing an impact of transmission of the RAM on other uplink transmissions. Furthermore, some techniques and apparatuses described herein assist a UE with prioritizing portions of the RAM in different UE operating modes, such as a dual connectivity mode, a carrier aggregation mode, or a supplemental uplink mode. Some techniques and apparatuses described herein employ cross-carrier scheduling, dynamic power sharing, or dynamic power control to achieve these and other performance improvements.

A feedback information transmission method and apparatus, a device, and a medium are provided. The method includes: receiving at least one piece of transmission information transmitted on at least one physical sidelink channel, where one piece of transmission information is transmitted on each physical sidelink channel; determining power information corresponding to each of at least one piece of feedback information that corresponds to the at least one piece of transmission information; and transmitting corresponding feedback information on at least one physical sidelink feedback channel resource based on the power information corresponding to each piece of feedback information.

A method, of operating an end node to wirelessly communicate with a central node, includes: receiving wirelessly a current instance of a beacon signal periodically-transmitted from the central node; measuring a received power, P.sub.B-RX, of the beacon signal; reading locally-stored values of P.sub.B-TX and G representing a presumed transmitted power of the beacon signal and a performance goal of the end node, respectively; determining, for a given channel, a path loss, PL, based on the P.sub.B-RX and the P.sub.B-TX; and adaptively setting an energy level, E.sub.N-TX, of a forthcoming message to be transmitted from the end node by adaptively determining, based on PL and G, at least two of: a level of power, P.sub.N-TX; a forward error correction coding rate, c; and a spreading factor, SF; and a modulation format, M.

Systems, methods, apparatuses, and computer-readable storage media for managing power consumption of a mobile device are disclosed. The systems, method, apparatus, and computer-readable storage medium may cause the base station to identify an energy metric associated with a mobile device, and to configure the transmission between the base station and the mobile device based at least in part on the energy metric. The configuration of the transmission may reduce the power consumption of the mobile device for processing the transmission.

A method implemented in a communication device for controlling inter-link interference due to transmissions from the communication device on a radio link to which different types of resources are allocated. The method comprises separately limiting transmission powers on the different types of resources by operating separate interference control instances. At least two of the separate interference control instances are based on the same group of schemes but adopt different scheme-related control parameters for at least one of the schemes or are based on different groups of schemes. The method further comprises performing transmissions on the different types of resources according to the separately limited transmission powers. Also provided is a communication device for controlling inter-link interference.

A wireless device receives from a base station one or more messages comprising configuration parameters of a plurality of cells. The plurality of cells comprising one or more first cells of a first type and one or more second cells of a second type. The wireless device determines one or more transmission powers. The wireless device transmits, via one or more cells, one or more signals employing the one or more transmission powers.

A load balancing process includes determining when the cell is overloaded, determining whether the cell is in a hold state, maintaining a current mitigation state for the cell when the cell is determined to be in a hold state, determining whether traffic has decreased for the cell since a previous time and whether mitigation was applied to the cell at the previous time, applying a hold state to the cell when the traffic is determined to have decreased and the mitigation is determined to have been applied, determining whether performance has decreased by a predetermined level for the cell when the cell is not in the hold state, and applying mitigation to the cell when performance has decreased by at least the predetermined level. Such a process may be implemented as a state machine in a system.

Disclosed are operation method of station in wireless local area network. An operation method comprises setting transmission power of a frame; setting a clear channel assessment (CCA) threshold based on a difference between the set transmission power and a default value of the transmission power; and performing a CCA operation based on the set CCA threshold. Therefore, performance of WLAN can be enhanced.

A method and network node (130; 110; 111) for managing transmit power of a wireless device (120) in a wireless communication network (100). Cells (115, 116) for serving the wireless device (120) form at least one imbalance region (117) in which the wireless device (120) has the best quality in the downlink to a first cell (115) of a first type and in the uplink to a second cell (116) of a different, second type. The network node (130; 110; 111) identifies (301; 602) a situation associated with a risk for undesired increase of transmit power used by the wireless device (120) when the wireless device (120) moves in the imbalance region (117). The network node (130; 110; 111) provides (302; 602), in response to the identification, power control that makes the wireless device (120) increase transmit power slower than else would be the case.