Provided are a method, a micro base station, and a macro base station for adjusting a communication mode, the method including: a first communication node sending duplex mode adjustment information to a second communication node, herein the second communication node at least supports a full-duplex mode. According to the technical solution provided by the present disclosure, by sending the duplex mode adjustment information to the second communication node, the influence on the system flexibility for a reason that the second communication node enables a full-duplex mode at all times is avoided, the power consumption caused by the full-duplex mode to the second communication node is reduced and the burden of subordinate terminals of the second communication node is decreased.

The present invention is designed so that the decrease of spectral efficiency can be reduced even when coverage enhancement is attempted in communication by user terminals in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. A radio base station communicates with a user terminal in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth, and this radio base station has a transmission section that transmits a downlink signal to the user terminal in repetitions, and a control section that controls transmission by applying a transmission method to use frequency hopping or a transmission method to use frequency scheduling to the downlink signal, and the transmission section transmits information about the transmission method to apply to the downlink signal to the user terminal.

Technologies are generally described for a bandwidth control scheme. In some examples, a transmitter device configured to transmit information via a wireless connection may include a baseband signal processor configured to process the information to generate a baseband signal with a baseband bandwidth; a modulator configured to modulate a radio frequency (RF) signal with an RF bandwidth based on the baseband signal; and a controller configured to adjust at least one of the baseband bandwidth and the RF bandwidth based on a movement of the transmitter device relative to a position of a receiver device configured to receive the RF signal.

Methods, systems, and devices are describe for dynamic medium access control (MAC) algorithm selection in a wireless communication system. A device, e.g., a user equipment or base station, may identify a channel parameter associated with a first channel used for communications in the wireless communication system. The device may dynamically select, based at least in part on the channel parameter, a first MAC algorithm from a plurality of MAC algorithms available for communications using the first channel. The wireless communication system may be a millimeter wave wireless communication system and may, in some examples, use directional or beamformed transmissions.

Methods and systems are disclosed to adjust communication links within wireless networks based upon composite link quality indicators (LQIs). Packet communications are received by a network node through a communication link from a separate network node within a wireless network. The network node can also be configured to transmit packet communications from the network node through the communication link to the separate network node. The network node generates composite LQI measurements for the received packet communications, and the composite LQI measurements are based upon signal strength measurements for the received packet communications and also based upon signal quality measurements for the received packet communications. The network node then adjusts the communication link based upon the composite LQI measurements.

A mobile communications network includes one or more network elements providing a wireless access interface for communications devices. The wireless access interface provides plural communications resource elements across a host frequency bandwidth, and includes, within the host frequency bandwidth, first communications resource elements within a first frequency bandwidth for allocation preferably to reduced capability devices to receive signals representing the data transmitted by the transmitter unit within the first bandwidth forming a first virtual carrier, the reduced capability devices each having a receiver bandwidth which is greater than or equal to the first frequency bandwidth but less than the host frequency bandwidth. Communications devices of different capabilities can be allocated communications resources within different frequency ranges according to their capability, which can relieve congestion on a center frequency of communications resources in which communications devices with a minimum bandwidth capability must receive communications resources for receiving down link signals.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a change of one or more reception conditions. The UE may transmit, to a base station and based at least in part on the change of the one or more reception conditions, a request for a radio link adaptation operation to update one or more of a reception beam or a transmission beam of the base station used to communicate with the UE. Numerous other aspects are described.

A monitoring apparatus includes: a data collection unit that collects from a wireless communication apparatus log information including information indicating change in a modulation scheme within a previously fixed first time period; an analysis unit that fixes the wireless communication apparatus as a monitored apparatus, in a case where the number of changes in the modulation scheme exceeds a first threshold value in the first time period; a data collection unit that collects from the wireless communication apparatus information on a modulation scheme applied when wireless communication is performed for each second time period shorter than the first time period, and information on a data amount transmitted and received by applying the modulation scheme in the second time period; and a line use rate calculation unit that calculates a line use rate of a wireless line in a wireless section using the information collected in the data collection unit.

A method for transmitting data by a first station (STA) in a wireless local area network (WLAN) system is disclosed. The method includes configuring, as a radio frame for transmission of the data, a high efficiency extended range single user physical protocol data unit (HE ER SU PPDU) in which a high efficiency signal A (HE-SIG-A) field is repeated, and transmitting the configured HE ER SU PPDU to a second STA in a resource unit (RU) of one of a first type and a second type, the first type having a size of 106 tones and the second type having a size of 242 tones. If the HE ER SU PPDU is transmitted in an RU of the first type, the HE ER SU PPDU is transmitted in an RU of the first type at a fixed position in a primary 20-MHz channel.

Methods and systems are disclosed which can perform cable characterization at link-up and during in-service monitoring to provide the best data throughput. In some embodiments a plurality of frequency tones may be sent across a cable to a remote system. A plurality of return loss values associated with sending the plurality of frequency tones may then be measured and stored. Next, a crosstalk value across the cable may be computed. A quality value for the cable may then be determined based on at least the plurality of return loss values and the crosstalk value.