Embodiments disclose an antenna information sending method and device, and an antenna information receiving method and device. The method includes: obtaining first antenna information of a terminal device, where the first antenna information includes at least one or more of a maximum number of layers for uplink spatial multiplexing that are supported by the terminal device, an antenna number supported by the terminal device, or whether the terminal device supports smart switch on/off of UE's antenna ports. The method also includes sending the first antenna information to a base station. In this way, the terminal device can control, according to a service requirement of the terminal device, an antenna deployed on the terminal device, and report antenna information of the terminal device to the base station in a timely manner.

Systems and methods of a node in a wireless communication system with switchable antenna functions are provided. In one exemplary embodiment, a method by a controller for configuring a switching network may include configuring the switching network for a first mode of operation associated with multiple-input, multiple-output (MIMO) communications. Further, the method may include configuring the switching network for a second mode of operation associated with beamforming communications.

Certain aspects of the present disclosure relate to techniques for control channel resource mapping with transmit diversity. In an aspect, a method for wireless communications is provided with includes transmitting a signal associated with a downlink control channel, where the downlink control channel spans at least one group of resource elements (REs), and the group of REs indicates a first orthogonal resource to be used by a user equipment (UE). The method also includes signaling a second orthogonal resource to be used by the UE.

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and to an apparatus for transmitting an SRS in a multi-antenna system. The method comprises the steps of: acquiring specific information for discriminating a first antenna group and a second antenna group from among a plurality of antennas, wherein said first antenna group includes one or more antennas which are set to a turned-on state to perform communication with a base station, and said second antenna group includes one or more other antennas which are set to a turned-off state; transmitting an SRS to the base station if a predetermined condition is satisfied, under the condition that the second antenna group is set to the turned-off state; and setting the second antenna group to a turned-off state after the transmission of the SRS.

Described herein are systems, methods and devices for implementing a temperature-aware, multi-antenna scheduler that cools mmWave devices by preventing heat buildup via switching or distributing a data stream to other redundant antennas, allowing for dissipation of heat as well as providing reliable connectivity.

A mobile terminal reduces its power consumption by selectively switching between a diversity mode and a non-diversity mode. The mobile terminal monitors the total output power of two or more of its transmitters, and selectively switches between the diversity mode and the non-diversity mode based on the total output power. The mobile terminal may also selectively switch between the diversity and non-diversity modes based on a difference in output power levels between the two or more transmitters.

The present invention relates to a communication technique which combines, with IoT technology, a 5G communication system for supporting higher data transmission rates than 4G systems, and a system therefor. The present invention can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security- and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and device for reducing the power consumption of a base station.

According to a first embodiment, an apparatus may include at least one processor and at least one memory including computer program code. The at least one memory and the computer program code can be configured to, with the at least one processor, cause the apparatus to at least determine at least one reference value configured to evaluate at least one beam change condition based on at least one measurement. The at least one memory and the computer program code can be further configured to, with the at least one processor, cause the apparatus to at least determine whether at least one beam has changed. The at least one memory and the computer program code can be further configured to, with the at least one processor, cause the apparatus to at least, upon determining that the at least one timer T has expired, determine that the at least one beam change condition has been fulfilled.

In order to reduce power consumption, an access node may turn off transmissions from one or more rows or columns of antennas in a mMIMO array. To help prevent the beam from overshooting (i.e., going beyond) an intended area of coverage when the access node turns off transmission by one or more rows, the access node also increases the electrical down tilt of the beam (i.e., angle of depression) to help contain the beam within its intended area of coverage. To help prevent problems with SSB beam selection and/or beam switching, when the access node turns off transmission by one or more columns, the access node reduces the number of SSB beams that are transmitted while sweeping SSBs over the sector thereby reducing the overlap of the (now) wider SSB beams.

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and to an apparatus for transmitting an SRS in a multi-antenna system. The method comprises the steps of: acquiring specific information for discriminating a first antenna group and a second antenna group from among a plurality of antennas, wherein said first antenna group includes one or more antennas which are set to a turned-on state to perform communication with a base station, and said second antenna group includes one or more other antennas which are set to a turned-off state; transmitting an SRS to the base station if a predetermined condition is satisfied, under the condition that the second antenna group is set to the turned-off state; and setting the second antenna group to a turned-off state after the transmission of the SRS.