Abstract: Communication equipment communicating in a licensed frequency band identifies unused unlicensed communication resources within an unlicensed frequency band. The communication equipment uses the identified unlicensed communication resources to communicate within the unlicensed frequency band. In some circumstances, the unused unlicensed communication resources are identified based on resource information received from a base station where the resource information identifies unlicensed communication resources that will be used by the base station. In other circumstances, the unused unlicensed communication resources are identified based on frequency band measurements of the unlicensed frequency band over an observation time duration longer than a sensing time duration used by unlicensed equipment using the unlicensed frequency band.

Abstract: A device-specific synchronization signal (DS-SS) is transmitted by a base station within a data channel transmission to a mobile device before a paging time window for the mobile device. After a sleep state, the mobile device attempts to acquire the DS-SS without decoding a downlink control channel to obtain signal transmission information related to transmission of the page message from a base station. In addition to providing timing information for resynchronization, the DS-SS indicates the existence of a page message for the mobile device within the data channel. The mobile device returns to the sleep state in response to not detecting a DS-SS that indicates a page message. Prior to entering a sleep state, the mobile device receives transmission format information indicative of a transmission format of the DS-SS.

Abstract: A communication control method executed in a wireless relay apparatus connected to an upper apparatus via a backhaul link includes receiving, from the upper apparatus, a failure notification message indicating that a failure has occurred in the backhaul link of the upper apparatus and that the upper apparatus has failed to recover the backhaul link, and in response to receiving the failure notification message from the upper apparatus, switching the backhaul link of the wireless relay apparatus to another upper apparatus regardless of a radio state of the backhaul link of the wireless relay apparatus.

Abstract: A communication control method used in a user equipment, user equipment, and apparatus for controlling a user equipment used in a user equipment perform early data transmission in which uplink user data is transmitted during a random access procedure. The user equipment receives from a base station, a first timer value for a random access procedure without the early data transmission and a second timer value for a random access procedure with the early data transmission, selects the second timer value in response to determining that the user equipment performs the early data transmission, and starts a timer configured with the second timer value in response to transmitting the uplink data by the early data transmission.

Abstract: A device-specific synchronization signal (DS-SS) is transmitted by a base station within a data channel transmission prior to a page timing window (PTW) of designated for at least one mobile device. The DS-SS includes a plurality of sequence instances where each sequence instance is based on a single root sequence. Prior to entering a sleep state, the mobile device receives transmission information indicative of the DS-SS transmission including at least one of a timing and format of the DS-SS transmission. After a sleep state, a mobile device acquires the DS-SS.

Abstract: A neighboring cell determines that uplink interference from an unmanned aerial vehicle (UAV) exceeds a first threshold at the neighboring cell. The neighboring cell transmits an uplink interference indicator to the UAV. In some examples, the UAV informs its serving cell of the uplink interference experienced by the neighboring cell. The serving cell can utilize information received from the UAV to make handover decisions or scheduling decisions for the UAV that caused the uplink interference. In other examples, the UAV can temporarily refrain from transmitting on at least some of its uplink resources or utilize different uplink resources for uplink data transmissions. In still other examples, the UAV can utilize downlink measurements to select which neighboring base station System Information Block messages should be monitored for an uplink interference indicator.

Abstract: A communication control method executed in a relay apparatus comprising a base station function processor, and a user equipment function processor, the communication control method including: receiving, by a MAC layer of the base station function processor, from the lower apparatus, a first buffer state report, notifying, by the MAC layer of the base station function processor, a MAC layer of the user equipment function processor, of an amount of first untransmitted upstream data; considering, by the MAC layer of the user equipment function processor, the amount of first untransmitted upstream data notified to be a part of an amount of upstream data queued in a MAC layer of the relay apparatus to calculate an amount of second untransmitted upstream data of the relay apparatus; and transmitting, by the MAC layer of the user equipment function processor, a second buffer state report.

Abstract: A communication control method executed in a relay apparatus including a base station function processor for connecting wirelessly to a lower apparatus, and a user equipment function processor for connecting wirelessly to an upper apparatus, the relay apparatus relaying upstream data from the lower apparatus to the upper apparatus includes transmitting, to the upper apparatus, a first buffer state report indicating an amount of untransmitted upstream data of the relay apparatus, and transmitting, to the upper apparatus, a second buffer state report indicating at least an amount of untransmitted upstream data of the lower apparatus. A trigger condition for transmitting the second buffer state report is different from a trigger condition for transmitting the first buffer state report.

Abstract: A communication control method is executed in a relay apparatus including a base station function processor connecting wirelessly to a lower apparatus, and a user equipment function processor connecting wirelessly to an upper apparatus, the relay apparatus relaying upstream data from the lower apparatus to the upper apparatus. The communication control method includes configuring a number of target hops indicating the number of hops from the relay apparatus to a lowest apparatus among one or more of the lower apparatuses to be covered in a buffer state report, and transmitting, to the upper apparatus, the buffer state report indicating an amount of untransmitted upstream data of each of at least one apparatus, among the relay apparatus and the one or more of the lower apparatuses, corresponding to the configured number of target hops.

Abstract: A cell reselection control method according to one embodiment is a method in a mobile communication system. The cell reselection control method a step A of transmitting through a use of broadcast signaling, by a base station, as a redistribution parameter used for a redistribution function, a first redistribution parameter applied to a radio terminal in a first coverage and a second redistribution parameter applied to a radio terminal in a second coverage outside the first coverage, a step B of acquiring, by a radio terminal in an idle mode in the second coverage, the second redistribution parameter transmitted in the step A, and a step C of performing, by the radio terminal, cell reselection using the second redistribution parameter acquired in the step B. The redistribution function is a function of distributing cells and/or frequencies which a plurality of radio terminals in an idle mode reselects by cell reselection.

Abstract: In the event that a first user equipment (UE) device is unable to decode a packet received from a base station that provides Point-to-Multipoint (PTM) compatible services to UE devices within a service area (e.g., cell) of the base station, the first UE device transmits a request for retransmission of the packet. In one example, the request for retransmission is transmitted to one or more neighboring UE devices via a device-to-device (D2D) transmission. In response to the request for retransmission, one or more of the neighboring UE devices, which were able to successfully decode the same packet, retransmit the packet to the first UE device via a D2D communication link.

Abstract: The methods, devices, and systems discussed herein define sidelink interface (e.g. PCS) states for a unicast connection between two wireless communication devices. A Sidelink-CONNECTED state is a sidelink interface state in which a first wireless communication device establishes and maintains a sidelink channel connection with a second wireless communication device. The first and second wireless communication devices can transmit sidelink unicast transmissions to each other over the sidelink channel connection while operating in the Sidelink-CONNECTED state. A non-Sidelink-CONNECTED state is a sidelink interface state other than the Sidelink-CONNECTED state. The first and second wireless communication devices transition from the Sidelink-CONNECTED state to the non-Sidelink-CONNECTED state upon the occurrence of a triggering event such as a Radio Link Failure.

Abstract: A base station receives a bitrate query from a first user equipment (UE) device being served by the base station. The bitrate query can be a request for a bitrate increase or decrease. The base station transmits a bitrate recommendation to the first UE device. The bitrate recommendation is to be used for a Voice over Long-Term Evolution (VoLTE) call between the first UE device and a second UE device. In some instances, the first UE device and the second UE device negotiate the bitrate to be used for the VoLTE call, based on the bitrate recommended by the base station. The first and second UE devices implement a bitrate for the VoLTE call and provide feedback to the base station.

Abstract: A communication control method according to an embodiment is a method for controlling specific data transmission in which a user equipment transmits or receives data of a predetermined size or smaller size during a random access procedure. The communication control method includes transmitting, by the user equipment in an RRC connected state, to a base station, assistance information for the base station to determine whether to perform, on the user equipment, data transmission configuration necessary for performing the specific data transmission, and in response to determining, based on the assistance information, to perform the data transmission configuration on the user equipment, transmitting, by the base station, to the user equipment, an RRC release message including configuration information indicating the data transmission configuration.

Abstract: A communication method according to one embodiment comprises the steps of transmitting capability of a radio terminal, which is a pedestrian user equipment (UE), from the radio terminal to a base station, receiving, by the base station, the capability of the radio terminal from the radio terminal, and individually transmitting, from the base station to the radio terminal, information of a radio resource pool for direct terminal-to-terminal communication based on the capability of the radio terminal. The information of the radio resource pool is information of a resource pool based on a geographical zone.

Abstract: Communication equipment communicating in a licensed frequency band identifies unused unlicensed communication resources within an unlicensed frequency band. The communication equipment uses the identified unlicensed communication resources to communicate within the unlicensed frequency band. In some circumstances, the unused unlicensed communication resources are identified based on resource information received from a base station where the resource information identifies unlicensed communication resources that will be used by the base station. In other circumstances, the unused unlicensed communication resources are identified based on frequency band measurements of the unlicensed frequency band over an observation time duration longer than a sensing time duration used by unlicensed equipment using the unlicensed frequency band.

Abstract: In order to improve the wake-up signal (WUS) detection performance for MTC UE devices, a set of neighboring base stations coordinate to simultaneously transmit a common wake-up signal (CWUS). The CWUS is transmitted from the base stations utilizing a common set of time/frequency resources. A user equipment (UE) device receives the CWUSs from a plurality of the base stations and combines the received CWUSs. In some examples, the UE device coherently combines the received CWUSs. The UE device utilizes the combined CWUSs to determine when the UE device may skip monitoring of the Paging Occasions within a Paging Time Window (PTW) to conserve power.

Abstract: A communication control method in a mobile communication system, comprises a step A of transmitting, by a first radio communication device to a second radio communication device, information on whether to perform an early data transmission which transmits data using a predetermined message during a random access procedure, and a step B of determining, by the second radio communication device, after the second radio communication device receives the information, whether to perform the early data transmission based on the received information. The first radio communication device is one of a radio terminal and a base station, and the second radio communication device is the other of the radio terminal and the base station. The step A is performed earlier than transmission timing of the predetermined message.

Abstract: A control method according to one embodiment is for controlling early data transmission configured to perform user data transmission during a random access procedure. The control method comprises: transmitting, by the user equipment to a base station during the random access procedure, a random access preamble configured for the early data transmission; and transmitting, by the user equipment to the base station during the random access procedure, a MSG 3 message including uplink user data. The MSG 3 message further includes a Medium Access Control (MAC) Control Element (CE) indicating that no downlink user data transmission is expected.

Abstract: A communication control method is a method executed by a user equipment. The communication control method includes transmitting, to a network, a failure report related to a failure in a procedure related to RRC connection executed by the user equipment when the user equipment exists in enhanced coverage of a serving cell. The failure report includes enhancement state information indicating a coverage enhancement state of the user equipment in the enhanced coverage, and failure count information associated with the enhancement state information. The failure count information indicates the number of times the user equipment fails in the procedure in the coverage enhancement state.