77 results about "Cellular communication systems" patented technology

A cellular base station (BS) which determines an aperiodic sounding reference signal (SRS) triggering offset configuration specifying an offset between an aperiodic SRS trigger received by a user equipment (UE) and transmission of the SRS by the UE. The cellular base station may determine that the SRS triggering offset should be adjusted. In response, the cellular base station may transmit signaling to the UE specifying a new value for the aperiodic SRS triggering offset. The new SRS triggering offset value may be partly based on a minimum timing offset for the UE and may be contained in a medium access control (MAC) control element (CE) or in downlink control information (DCI). Additionally, the new triggering offset value may be applicable for a plurality of component carriers or bandwidth parts. The cellular base station may also determine a new triggering offset value due to conflicts regarding the AP-SRS transmission.

A cellular base station (BS) which transmits more flexible downlink control information (DCI) to the UE, and a UE capable of receiving and processing a received DCI message. The DCI message may have a DCI format of 0_1 or 0_2 and further may comprise an UL-SCH set to 0, a CSI request field of all 0s and an SRS request field having a nonzero value. The DCI message may indicate to the UE that the UE should: 1) transmit an aperiodic SRS corresponding to SRS request; and 2) that the UE should not transmit on the PUSCH. The DCI may include existing fields that specify either a slot offset or beam information useable when transmitting the aperiodic SRS. The base station may also generate a DCI message with an SRS trigger that is targeted to a plurality of UEs in a group, or a plurality of groups of UEs, for greater efficiency.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Apparatuses and methods for a sounding reference signal design and signaling in cellular communication systems. A method of a UE in a wireless communication system includes: receiving, from a base station (BS), a radio resource control (RRC) signal including first RRC parameters; identifying, based on the first RRC parameters, an aggregation flag indicating whether to enable sounding reference signal (SRS) slot aggregation; receiving the RRC signal including second RRC parameters indicating an SRS hopping pattern based on a determination that the SRS slot aggregation is enabled; performing, based on the SRS hopping pattern, the SRS slot aggregation to generate a super slot; and transmitting, to the BS, an SRS based on the super slot.

A wireless terminal of a cellular telecommunication system communicates with an access node via a cell and comprises receiver circuitry and processor circuitry. The receiver circuitry is configured to receive, from the cell, serving cell mobility information. The processor circuitry configured to determine, based on the serving cell mobility information, mobility state of the cell.

Methods and apparatuses for voice over long-term evolution / voice over new radio (VoLTE / VoNR) performance for a cellular communication system. A method of operating a base station includes receiving, from a user equipment (UE), uplink (UL) signals; identifying, based on the UL signals, a first and second parameters; determining first and second UL power control parameters based on the first and second parameters, respectively; determining a first time period for the first UL power control parameter and a second time period for the second UL power control parameter, wherein the first time period is longer than the second time period; updating the first UL power control parameter based on the first time period and the second UL power control parameter based on the second time period; and transmitting, to the UE, the updated first and second UL power control parameters for an UL transmit power of the UE.

Aspects of the disclosure are directed to signaling associated with cellular positioning protocol for light-based positioning (LBP). In an aspect, a first entity receives, from a second entity, a request for location information of the UE, the request for location information defined and transferred using a positioning protocol for at least one of 4G, 5G or 6G cellular communication. The third entity transmits the light-based signal, and the first entity obtains at least one measurement of the light-based signal. The first entity transmits location information based on the at least one measurement to the second entity using the positioning protocol. Such aspects provide various technical advantages, such as improved position estimation of user equipments (UEs) of cellular communications systems via LBP.

A variety of transmission patterns are provided for the transmission of synchronization signals in an OFDM cellular communication system utilizing beam sweeping techniques. In the patterns, at least one OFDM symbol gap is provided between bursts of each synchronization signal to allow for switching between beams.

Apparatuses and methods for a sounding reference signal design and signaling in cellular communication systems. A method of a UE in a wireless communication system includes: receiving, from a base station (BS), a radio resource control (RRC) signal including first RRC parameters; identifying, based on the first RRC parameters, an aggregation flag indicating whether to enable sounding reference signal (SRS) slot aggregation; receiving the RRC signal including second RRC parameters indicating an SRS hopping pattern based on a determination that the SRS slot aggregation is enabled; performing, based on the SRS hopping pattern, the SRS slot aggregation to generate a super slot; and transmitting, to the BS, an SRS based on the super slot.

A radio-frequency circuit includes a filter circuit and a power amplifier circuit. The filter circuit includes a first pass band corresponding to a band of a cellular communication system and a second pass band corresponding to a band of a satellite communication system. The power amplifier is connected to the filter circuit. The second pass band is positioned between the first pass band and a third pass band corresponding to a band of a satellite navigation system, or the second pass band at least partially matches the first pass band.

A community wind turbine cellular system (CWTC system) is disclosed. The CWTC system is configured to provide community-based cellular communication, on a temporary or permanent basis. One or more turbine blades of the CWTC system are configured with an omni-directional radio frequency (RF) antenna suitable for receiving and transmitting mobile communication data to cellular devices. These omni-directional RF antenna have an uninterrupted wired connection that passes from the antenna to an antenna radio within the system's nacelle. More particularly, each RF antenna in a turbine blade is connected, via a wired connection, to a corresponding slip ring within the nacelle of the cellular wind turbine. Each slip ring is connected to the antenna radio via a wired connection. In this manner, each RF antenna maintains a wired connection to the antenna radio, even as the turbine blades are rotating.

A cellular communication system supports network slicing and has a network relay function (140) for managing the indirect connections. A mobile device (110) may send a request message to a relay device (120), the request message including a slice to access. A response message indicates available slice(s) and relay device(s). The device selects a slice and / or relay device in dependence of the response message. The relay device receives the request message and sends a transfer request message to the cellular communication system indicating a request to transfer data via an indirect connection and including the requested slice, and sends the response message. The network relay function receives the transfer request message, obtains relay capability data regarding relay device(s) capable of data transfer for available slice(s) in dependence of the requested slice; and sends a transfer response message including network relay information indicating the available relay device(s) that can serve as relay device for indirect communication with the requested network slice.

Aspects of the disclosure are directed to signaling associated with cellular positioning protocol for light-based positioning (LBP). In an aspect, a first entity receives, from a second entity, a request for location information of the UE, the request for location information defined and transferred using a positioning protocol for at least one of 4G, 5G or 6G cellular communication. The third entity transmits the light-based signal, and the first entity obtains at least one measurement of the light-based signal. The first entity transmits location information based on the at least one measurement to the second entity using the positioning protocol. Such aspects provide various technical advantages, such as improved position estimation of user equipments (UEs) of cellular communications systems via LBP.

Disclosed herein are systems and methods related to multi-transmission / reception point (TRP) uplink transmissions in a cellular communications system. In one embodiment, a method performed by a wireless communications device includes receiving, from a network node, a configuration of two sounding reference signal (SRS) resource sets, a first and a second SRS resource set, each SRS resource set including one or more SRS resources. The method further includes receiving, from the network node, a downlink control information (DCI) that schedules a physical uplink channel transmission, the physical uplink channel transmission including a first portion associated to a first SRS resource in the first SRS resource set and a second portion associated to a second SRS resource in the second SRS resource set, where the first and second SRS resources are indicated in the DCI. The method further includes transmitting the physical uplink channel transmission in accordance with the DCI.

The present disclosure relates to beam failure recovery using contention-based random access. The present disclosure relates to performing beam failure recovery using a contention-based random access procedure in a cellular communication system. A wireless device and a cellular base station can establish a cellular link. Beam configuration information indicating an active beam of downlink communications can be provided. The wireless device can detect a beam failure of the active beam. The wireless device can perform a contention-based random access procedure based at least in part on detecting the beam failure of the active beam. The wireless device can provide an indication of the detected beam failure to the cellular base station as part of the contention-based random access procedure.

Disclosed herein is a method performed by first core network node in a core network of a cellular communications system, the method comprising: storing (Fig. 7A, step 1; Fig. 7B, step 7; Fig. 70, step 13) information that indicates one or more Data Network Names, DNNs, that are exempted from Operator Defined Barring, ODB; and using the information that indicates the one or more DNNs that are exempted from ODB to perform one or more actions related to Protocol Data Unit, PDU, establishment or session mobility.

The invention provides a resource optimization method of an RSMA (Received Signal Moving Average) communication and sensing integrated system based on STAR-RIS assistance. The method comprises the following steps: constructing a cellular communication system transmission model assisted by a reconfigurable intelligent surface; establishing a weighted sum rate maximization robust resource allocation problem based on a cellular communication system transmission model; setting a robust constraint, and constructing a resource allocation problem with a constraint condition based on the robust constraint; converting a resource allocation problem into a convex problem, and converting a robust constraint into a deterministic constraint; carrying out alternative optimization solution on the converted convex problem to obtain a resource allocation scheme; according to the method, the influence of the uncertainty of a transmission link channel is considered, a multi-antenna communication system is established, and the communication quality of a user and the sum rate of the maximized system can be ensured to the maximum extent; according to the system, ideal channel state information is considered, and high robustness is achieved; and the system performance can be further improved by using the RSMA and STAR-RIS technologies.

Systems and methods are disclosed herein for network-initiated slice-based handover in a cellular communications system. In one embodiment, a method in a cellular communications system comprises, at a network node in a core network of the cellular communications system, detecting a triggering event for a network slice handover for a session of a particular wireless communication device. The method further comprises, at the network node and responsive to detecting the triggering event, identifying a target network slice for the network slice handover and sending, to a Policy and Control Function (PCF) in the core network, a message that initiates a network slice handover of the session from a source network slice to the target network slice. The method further comprises, at the PCF, receiving the message that initiates the network slice handover and performing an action to cause the network slice handover.

In an aspect, a communication control method is a communication control method used in a cellular communication system. The communication control method includes transmitting, by a user equipment, a first connection request notification to a base station, the first connection request notification indicating a desire to connect to a mobile Integrated Access and Backhaul (IAB) cell. The communication control method also includes transmitting, by the base station, a first message to the user equipment in response to receiving the first connection request notification, the first message including a first measurement configuration that enables the user equipment to measure the mobile IAB cell.

A method for operating a cellular telecommunication system for communication with user equipment includes operating in a first mode and a second mode, the second mode being a backup or supplement for communications in the first mode. The method also includes adding one or more secondary cell groups operating in a third mode and after adding the one or more secondary cell groups, communicating in the first mode, the second mode, and the third mode. The first mode may have a higher average downlink throughput than the second mode. Further, the secondary cell groups may operate at a higher average downlink throughput than the first mode and the second mode. The first mode may be a fifth-generation (“5G”) sub-6 gigahertz (“sub-6”) communication mode, the second mode may be a Long-Term Evolution (“LTE”) communication mode, and the secondary cell groups may operate in a millimeter wave (“mmWave”) communication mode.

This invention provides a communication control method that enables IAB (Integrated Access and Backhaul) node handover between donor base stations without requiring any operational changes to user equipment. [Solution] In a cellular communication system, when a relay node (IAB node) having a user device UE under its control switches the connection from a first donor base station (source donor eNB) to a second donor base station (target donor gNB), even after the connection switch, the control connection between the user device and the first donor base station is maintained via the second donor base station, and the first donor base station transmits control information to the user device via the second donor base station.

The technology employs a polarization switching technique in a satellite-based cellular communication system, in order to prevent dropped connections when communicating with client communication devices. The polarization switching is implementable without requiring additional antenna elements on the satellite(s), while enabling the satellites(s) to be agnostic to the polarization transmitted by user equipment. The dwell time is selected so that the polarization switching is transparent to the users of the client computing devices. In one configuration, certain antenna elements can be set to handle a vertically polarized downlink and a horizontally polarized uplink, while other elements are set to handle a vertically polarized uplink and a horizontally polarized downlink, although other polarization configurations may be employed. A digital switch with a general purpose I / O (GPIO) controller may be employed for switching according to the dwell time.

Packet loss is suppressed at relay nodes. [Solution] The communication control method according to the first embodiment is a communication control method used in a cellular communication system. The communication control method includes the step of a donor node sending a message regarding routing settings to a relay node in the topology. The communication control method also includes the step of a relay node performing a first process in response to receiving the message.

Systems and methods are disclosed that relate to the configuration and use of signal and / or channel composites in a cellular communications system. In one embodiment, a method performed by a User Equipment (UE) comprises obtaining information that configures the UE with a set of signal and / or channel composites, wherein each composite of the set of signal and / or channel composites comprises a synchronization signal component and at least one composite of the set of signal and / or channel composites comprises both a synchronization signal component and at least one additional reference signal or channel. The method further comprises obtaining, from a Radio Access Network (RAN) node, an indication of one of the set of signal and / or channel composites and operating in accordance with the one of the set of signal and / or channel composites. In this manner, reduced signaling overhead and faster adaptation is provided for scenarios supporting different use cases.

A communication method for combining a 5G communication system supporting a higher data transmission rate than a 4G system with IoT technology and a system using the same are disclosed. Based on 5G communication technology and IoT-related technology, the disclosure can be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety-related services, etc.). A method and apparatus for supporting a reserved resource are disclosed, and according to the present invention, a method for a base station in a communication system includes the steps of transmitting reserved resource-related information to a terminal; determining whether to map a first signal to the reserved resource and a resource overlapping the first signal to be transmitted to the terminal based on the reserved resource-related information; and transmitting the first signal to the terminal based on the result of the determination.