4754 results about "Handover" patented technology

The invention discloses a multi-hop communication node intelligent scheduling method and system, and relates to the technical field of communication networks. The method is used for solving the scheduling and switching problems of multi-hop relay nodes in disaster emergency communication. Residual energy, channel fading parameters and link load data of an unmanned aerial vehicle and a ground terminal are collected, a communication potential index is calculated in combination with dynamic weight fusion, and the relay capability of a node in a complex environment is accurately evaluated. A relay node selection threshold is set according to the disaster type, nodes with communication potential indexes higher than the disaster adaptation threshold are preferentially selected, an initial hybrid topology structure with preferential survivability is constructed, and the network stability and survivability are improved. An autonomous game agent model is adopted, a multi-target reward function is designed based on local channel quality, residual energy and task emergency degree, it is ensured that the network achieves collaborative optimization of energy consumption balance, transmission real-time performance and survivability under the condition of dynamic topology and node failure, and efficient and continuous optimization of the disaster emergency communication network is achieved.

The invention relates to the technical field of ship communication, in particular to a multi-link converged communication method and system for a ship. The method comprises the following steps: receiving navigation information broadcasted by other ships in a preset range, evaluating the availability of a communication frequency band, and generating sea area communication channel state data; acquiring geographic position data of each ship; space communication link potential analysis is carried out according to the geographic position data of each ship and the sea area communication channel state data, and cross-chain space communication potential data is generated; constructing a multi-link ad hoc network topological structure according to the cross-chain space communication potential data; and task adaptation communication link allocation is carried out based on a multi-link ad hoc network topological structure, and a multi-link fusion transmission strategy is constructed, so that real-time communication link safe switching management is realized. According to the invention, on the basis of communication service adaptation and a multi-link fusion transmission strategy, real-time communication safe switching and high-reliability transmission of the marine formation are realized.

A wireless device receives from a first base station a radio resource control (RRC) message comprising a wireless device capability enquiry and transmits to the first base station an RRC message comprising a first parameter indicating support by the wireless device for recovering from a failure of a first serving cell by performing layer 1 and / or layer 2 triggered mobility (LTM) to a first selected cell based on the first selected cell being a candidate cell for LTM. The wireless device receives from a second base station an RRC message comprising an LTM configuration for cell switching to one or more LTM candidate cells of the second base station, where the LTM configuration indicates that the wireless device performs, after a failure of a second serving cell of the second base station, LTM to a second selected cell based on the second selected cell being a candidate cell for LTM.

In wireless communication, a device may change, add, or handover between cells of network access for inter-cell mobility. This may include Layer 1 and / or Layer 2 (L1 / L2) signaling for a user equipment (UE) moving between cells in a network. There may be a configuration message that includes configurations for one or more Layer 1 (“L1”) or Layer 2 (“L2”) Triggered Mobility (“LTM”) candidate cells. A measurement report with L1 measurements for the LTM candidate cells is used for a cell switch command to indicate a target LTM candidate cell to trigger execution of a LTM cell switch to the target LTM candidate cell. The LTM cell switch is from a source cell to the target LTM candidate cell.

The invention overcomes the constraints imposed by conventional wireless communication standards by introducing a physical-layer optimized architecture that decouples transmission control from any single protocol. Rather than being confined by the predefined behaviors of LTE, 5G NR, Wi-Fi, or NB-IoT, the system implements a unified control system that dynamically manages radio parameters—such as modulation, coding, and power—based on real-time link quality and network context. This cross-standard, multimode capability effectively supersedes traditional standard-driven implementations, enabling adaptive, low-latency, and spectrum-efficient communication in complex heterogeneous environments.The system dynamically controls radio access network (RAN) and physical layer parameters, including carrier aggregation, dynamic spectrum allocation, modulation and coding scheme (MCS) adaptation, beamforming configuration, channel coding, transmit power control, and frequency selection. The system architecture includes multi-mode base stations, relay nodes, and edge access points that support inter-RAT handover, fast radio link recovery, and seamless mobility across diverse wireless technologies.

The invention provides a low-orbit satellite resource allocation method and device based on beam and frequency domain collaborative optimization, and the method comprises the steps: dividing the overall bandwidth of a user region into a central sub-band and an edge sub-band through employing a dynamic soft frequency reuse scheme; all ground users are subjected to spatial clustering according to geographic positions and traffic demands, coverage cells are dynamically divided according to clustering results, and balanced service is achieved; on the basis of dynamic cell division, user clusters with high service volume are selected according to priorities, a beam activation set is generated, and a hopping beam matrix is updated; establishing a channel model between a user and a beam and a switching matrix between satellites; constructing a system utility target, and constructing a multi-target optimization problem model by taking the system utility target as a main part and integrating interference, switching overhead and delay penalty; and the multi-dimensional resource collaborative optimization framework based on deep reinforcement learning reconstructs a multi-objective optimization problem model, and outputs a solution of the multi-objective optimization problem model, including an optimal bandwidth and a power allocation result. According to the invention, resource allocation can be carried out on low-orbit satellites.

A low earth orbit satellite (LEO)-based communication system and method. The system comprises a low-orbit satellite constellation, a ground station, a user terminal and a network management and control center. The network management and control center comprises a track and link prediction module, a link quality prediction and evaluation module, a predictive resource pre-allocation and dynamic adjustment module and a space-ground cooperative control module. According to the communication system, active resource optimization and dynamic adjustment before actual switching are realized through track and link prediction, link quality prediction, predictive resource pre-allocation and dynamic adjustment and air-ground cooperative control. According to the method, the switching time delay can be greatly reduced, the packet loss rate is remarkably reduced, and the system throughput and the access success rate are also remarkably improved. Through predictive management, the performance, reliability and user experience of LEO communication are comprehensively improved.

A wireless transmit / receive unit (WTRU) may be configured to implement layer 1 / layer 2 (L1 / L2) based inter-cell mobility procedures with reduced latency during handover or other mobility operations. The WTRU may be configured to receive configuration information associated with a plurality of candidate cells. The configuration information may be associated with a physical layer measurement for each candidate cell. The configuration information may include a measurement criteria. The WTRU may be configured to determine a subset of the plurality of candidate cells, with each candidate cell in the subset determined based on the measurement criteria. The WTRU may be configured to send a report indicating the subset. perform a physical layer measurement on the subset, and receive an indication to perform layer handover to a candidate cell of the subset.

Systems and methods are disclosed for relay migration. In one embodiment, a method of operation of a network node for handover of one or more remote User Equipments (UEs) from a source relay UE to a target relay UE comprises determining that a triggering condition for handover of one or more remote UEs from a source relay UE to a target relay UE has occurred. The method further comprises, responsive to determining that the triggering condition has occurred, selecting one of a number of candidate target relay UEs as the target relay UE for the handover and causing handover and migration of state information to the target relay UE, the state information comprising state information of the one or more remote UEs.

A method, an apparatus, and a computer readable medium for storing instructions are described for a user terminal and a base station for updating an AI / ML configuration in case of a handover. The method performed by a user equipment comprising operating a first AI / ML configuration in a coverage area of a first base station; receiving an AI / ML configuration information indicating a second AI / ML configuration; operating the second AI / ML configuration indicated by the AI / ML configuration information in the coverage area of a second base station. Operating a first AI / ML configuration comprises operating a first AI / ML Model or a first AI / ML Model with a first AI / ML Model configuration in the coverage area of the first base station. The first AI / ML Model is associated with a first AI / ML Model identifier and the first AI / ML Model configuration is associated with a first AI / ML Model configuration identifier. Operating the second AI / ML configuration comprises operating a second AI / ML Model or the first AI / ML Model with a second configuration in the coverage area of the second base station. The second AI / ML Model is associated with a second AI / ML Model identifier and the second AI / ML Model configuration is associated with a second AI / ML Model configuration identifier. Indicating the second AI / ML configuration comprises indicating a second AI / ML Model identifier and / or a second AI / ML Model configuration identifier.

A terminal can control an execution of a conditional handover and an execution of a procedure for an addition / change of a secondary cell, and transmit a radio resource control layer message. When the conditional handover and the procedure for the addition / change are configured simultaneously, or when an execution condition of the conditional handover and an execution condition of the procedure for the addition / change are met simultaneously, the terminal prioritizes either the conditional handover or the procedure for the addition / change according to a state of the message.

The invention relates to the technical field of wireless communication, and particularly discloses a self-adaptive anti-interference communication method and system based on star flash-Bluetooth dual-mode, and the method comprises the steps: monitoring channel interference parameters in real time through a dual-mode radio frequency module on a communication terminal, including the out-of-band radiation power and the pulse interference duty ratio at the switching moment; instantaneous interference intensity features are extracted by using synchronous compression wavelet transform and sparse time-frequency analysis, periodic pulse interference features are identified by combining Hawkes process modeling, and a comprehensive anti-interference feature vector is constructed by fusion; the feature vectors are input into a pre-trained gradient boosting tree model for communication quality evaluation, an optimal communication mode is dynamically selected according to a scoring result, intelligent response to a complex interference environment is achieved, the stability and reliability of a communication system in a high-interference scene are improved, energy efficiency optimization and resource scheduling are considered, and the method is suitable for large-scale popularization and application. The method is suitable for industrial, medical, Internet of Things and other application scenes with strict requirements on communication quality.

The embodiment of the invention provides a non-terrestrial network communication method and a related device, and the method comprises the steps that first network equipment obtains first configuration information of a first cell, and the first cell is a cell in the first network equipment; and the first network device sends first configuration information to the second network device, the first configuration information comprising a first identifier and / or related information of a physical broadcast channel (PBCH) of the first cell, and the first identifier being used for identifying a system message of the first cell. The L3-free signaling switching is realized under the regeneration satellite working scene, the signaling overhead is saved, the signaling storm caused by switching is avoided, and the communication efficiency is improved.

Systems, methods, and instrumentalities are described herein for WTRU mobility and cell reselection in energy savings networks. Handover associated with network energy savings (NES) may be performed. A wireless transmit / receive unit (WTRU) may perform a handover from a source cell to a target cell, for example, based on determining that the source cell is entering an NES state and based on determining that a handover condition is satisfied. The WTRU may determine that the handover condition is satisfied but refrain from performing handover until a determination that the source cell is entering an NES state.

Systems, methods, apparatuses, and non-transitory computer-readable medium for conditional handover configuration for fast offloading during cell shutdown. For example, a method comprises receiving, with a user equipment from a serving cell, one or more handover configurations. The one or more handover configurations comprises an energy saving conditional handover configuration. At least one of the one or more handover configurations comprises at least one of: an indication of one or more candidate target cells, or information for target cell selection. The method also comprises receiving, from the serving cell, an indication of activation of an energy saving mode at the serving cell. The method further comprises selecting a target cell, from the one or more candidate target cells, based, at least partially, on the one or more handover configurations and the received indication of activation of the energy saving mode at the serving cell.

According to certain embodiments, a method by a UE during a handover of the UE from a source cell associated with a source node to a candidate target cell associated with a candidate target node is provided. The method includes receiving, from the source node, a message including a handover command associated with the candidate target node associated with the candidate target cell. The handover command includes ephemeris data and at least one common TA parameter associated with the candidate target cell.

The invention provides a communication load detection system and method oriented to an Internet of Vehicles environment. The method comprises the following steps: acquiring communication link state information of a node, wherein the communication link state information comprises a current connection protocol type and signal strength; according to a protocol type in the communication link state information, extracting corresponding communication load data containing a data packet size and a transmission frequency from the node; establishing a new communication link through the optimal communication protocol, and recording load distribution characteristics including a data packet size mean value and a transmission frequency variance before and after switching; according to load distribution characteristics, a gradient descent method is adopted to update parameters of the self-adaptive detection model, and an objective function is the minimization of a load change rate prediction error; deploying the updated adaptive detection model to the Internet of Vehicles, detecting the communication load in real time, and continuously monitoring the model performance after deployment for optimization; therefore, the communication protocol can be dynamically adjusted according to the network environment, and the communication efficiency and stability of the Internet of Vehicles are improved.

According to some embodiments, a method is performed by a source network node for performing a sidelink path switch. The method comprises determining to switch a remote wireless device to sidelink communication with a target relay wireless device. The target relay wireless device is in an idle or inactive state and the target relay wireless device is served by a target network node different from the source network node. The method further comprises transmitting an indication to the target network node of the path switch involving the target relay wireless device.

Embodiments include methods for a first radio network node (RNN) in a wireless network to configure quality of experience (QoE) measurements by user equipment (UEs). Such methods include receiving, from a measurement function in the wireless network, a QoE measurement configuration (QMC associated with one or more service types; and configuring one or more UEs with the QMC. Such methods also include sending to a second RNN in the wireless network, a first request for handover of a particular one of the UEs from a first cell served by the first RNN via a first radio access technology (RAT) to a second cell served by the second RNN via a second RAT. The first request includes the QMC. Other embodiments include complementary methods performed by a second RNN or by a UE, as well as first RNNs, second RNNs, and UEs configured to perform such methods.

Embodiments include methods, performed by a user equipment, UE, for reporting failures related to mobility operations by the UE to a network node in a radio access network, RAN. Such methods include logging (1210) information associated with a plurality of failures during conditional handover, CHO, operations related to a source cell and one or more first target cells. Such methods also include, after a successful mobility operation to a second target cell served by the network node, reporting (1240) the logged information, associated with the plurality of failures, to the network node. Other embodiments include complementary methods performed by a network node, as well as UEs and network nodes configured to perform such methods.

The invention discloses an unmanned aerial vehicle handover method and system based on trajectory prediction. The method comprises the steps of firstly obtaining position information of the unmanned aerial vehicle, and performing coordinate conversion to obtain accurate coordinates of the unmanned aerial vehicle; and then, inputting the coordinates of the unmanned aerial vehicle into the CNN-BiLSTM prediction model so as to predict the future position of the unmanned aerial vehicle. And establishing a candidate base station list according to the distance between the predicted position and each base station. When a candidate base station to be switched is selected, a plurality of evaluation indexes such as the distance between the predicted unmanned aerial vehicle coordinates and the candidate base station, the load of the candidate base station, the unmanned aerial vehicle running speed and the received signal quality are comprehensively considered. And after the candidate base station is selected, further checking whether the load of the candidate base station accords with an access permission condition, if so, executing handover, and otherwise, removing the base station from the candidate base station list and reselecting the base station. According to the method, through accurate trajectory prediction and a scientific base station selection strategy, the handover efficiency and accuracy of the unmanned aerial vehicle are effectively improved.

Provided in the present disclosure are a method for radio link failure recovery and user equipment. In the method for radio link failure recovery, a user equipment (UE) detects that a handover failure occurs, and when the UE has a stored conditional handover (CHO) configuration, or when the UE has a stored conditional handover (CHO) configuration and CHO recovery is enabled, the UE reverts back to a configuration used in a source cell. The configuration used in the source cell includes one or more of a physical layer dedicated configuration, a medium access control (MAC) layer configuration, or a semi-persistent SPS configuration.

A wireless transmit / receive unit (WTRU) may receive a radio resource control (RRC) message comprising configuration information. The configuration information may include one or more preconfigured candidate cell configurations. Each of the preconfigured candidate cell configurations may include a special cell (SpCell) configuration, a secondary cell (SCell) configurations, and / or a candidate cell index. The WTRU may receive a medium access control (MAC) control element (CE). The MAC CE may indicate to apply a first preconfigured candidate cell configuration of the one or more preconfigured candidate cell configurations and an activation state for each SCell in the first preconfigured candidate cell configuration. The WTRU may initiate a handover to a SpCell in the first preconfigured candidate cell configuration based on the indication in the MAC CE. The WTRU may transmit data to the SCells activated by the MAC CE.

The UE (102) receives (310a-310b) at least one downlink signal from the network entity (104) to monitor (316a-316b) performance of an ML model for CSI compression. Monitoring (316a-316b) the performance is based on a measurement of the at least one downlink signal. The UE transmits (318, 414a-414b) information associated with the performance of the ML model for CSI compression to the network entity (104) based on the measurement of the at least one downlink signal. When the information associated with the performance of the ML model indicates a performance failure, the UE communicates (322) with the network entity (104), where the communication (322) applies at least one of an update to the ML model, a handover of the ML model to a different ML model, or a non-ML CSI report.

The invention discloses a satellite switching method and system for an NTN high and low orbit fusion network, and the method comprises the steps: S1, UE obtains the position of the UE through a GNSS, reports the position to a source satellite, and obtains a candidate satellite list which is allowed to be accessed and measurement configuration from the source satellite; s2, the UE starts measurement after receiving the candidate satellite list, and updates the candidate satellite list according to a measurement result; s3, the UE measures all satellites in the updated candidate satellite list; and sorting the low earth orbit satellites and the geostationary orbit satellites meeting the conditions according to the measurement result and the candidate satellite information, and switching the satellites according to the sorting result. The method has the characteristics that the success rate and the communication continuity of UE conditional switching are improved, the switching decision delay and the signaling interaction load are dynamically reduced, and the cooperative advantages of LEO low time delay and GEO wide coverage are fully exerted.

Apparatuses, methods, and systems are disclosed for a conditional reconfiguration corresponding to handover (“HO”) to a target cell. One method includes receiving, at a user equipment (“UE”), a conditional reconfiguration including at least one set of reconfiguration parameters. Each set of reconfiguration parameters of the at least one set of reconfiguration parameters corresponds to each candidate target cell of at least one candidate target cell. The method includes acquiring a system information block (“SIB”) type of a source cell. The SIB type is associated with a candidate target cell of the at least one candidate target cell. The method includes performing a HO to the candidate target cell in response to an execution condition associated with the candidate target cell being fulfilled and the SIB type being associated with the candidate target cell being acquired.

Aspects of the subject disclosure may include, for example, receiving a handover request from a user equipment (UE) device in a mobility network, wherein the handover request identifies a target cell for handing over radio communication with the UE device from a source cell, wherein the identifying is based on the handover request, determining a usage level of the UE device, wherein the usage level comprises one of performance-sensitive traffic and performance-tolerant traffic, selecting an alternative target cell for the handover request, wherein the selecting is responsive to determining a performance-sensitive traffic usage level of the UE device, and initiating a handover operation between the source cell and the alternative target cell. Other embodiments are disclosed.

A method performed by a first network node for UE prediction flow in a terrestrial network (TN)-non-terrestrial network (NTN), TN-NTN network is provided. The method includes predicting a handover metric corresponding to respective categories of aggregated UEs for handovers between a source TN or NTN network node and a target NTN or TN network node, respectively. At least one of the respective categories of aggregated UEs includes UEs that fluctuate, based on a temporal threshold, between a connection to an NTN network node and a TN network node. The method further includes initiating at least one of (i) modification of a shape of a cell based on the predicted handover rate and volume, and (ii) allocation of UEs aggregated to the respective categories to different portions of a bandwidth.

The invention provides a communication method and device, the method is applied to a first satellite, the first satellite integrates a user plane function, and the method comprises the following steps: receiving a first switching request from a second satellite, the first switching request being used for requesting a takeover satellite in a second area to switch from the second satellite to the first satellite; and updating the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area. Therefore, the transmission service between the switched satellite and the terminal equipment can be ensured not to be interrupted, so that the user experience is improved.

The invention provides a satellite switching method and device, electronic equipment, a storage medium and a program product, and relates to the technical field of communication. According to the method, a source satellite determines a target satellite from a plurality of candidate satellites, the source satellite sends a first switching request message to the target satellite, the first switching request message comprises related parameter information of other candidate satellites, and the target satellite can perform switching processing after receiving the first switching request message. According to the invention, the target satellite can send the second switching request message to the other candidate satellites according to the related parameter information if the switching fails, so that the target satellite can directly start a rapid recovery process when the switching fails, and selects the other satellites to complete the switching. Therefore, the switching time and the signaling overhead can be reduced, and the efficiency and the reliability of inter-satellite switching are effectively improved.