30 results about "Handover latency" patented technology

The invention provides an uninterrupted redundant communication method and system, equipment and a medium, and belongs to the technical field of vehicle-mounted network communication.The method comprises the steps that data frames from two communication paths are received through two network interfaces respectively, CRC verification is carried out, wrong data frames are discarded, and the data frames passing verification are obtained; extracting the serial number of each data frame passing the verification as a target serial number, and comparing the target serial number with an expected serial number; if the target serial number is equal to the expected serial number, submitting the data frame to an upper application, and adding 1 to the expected serial number; wherein the data frame is generated by adding a globally unique and monotonically increasing serial number to each key application data frame by the sending end processing unit. According to the invention, fault switching delay is eliminated fundamentally, zero switching time is realized, and a crucial communication guarantee is provided for automatic driving of L4 and above.

This application provides a cell handover method and a related apparatus, applied to the field of communication technologies. In the technical solution provided in this application, a terminal device in a terminal device group receives terminal group information from a network device, reports a cell measurement result to the network device based on the terminal group information, and / or performs a random access procedure based on the terminal group information, to complete a cell handover of the terminal device group. In this application, the terminal device performs the cell handover of the terminal device group and / or performs the random access procedure based on the terminal group information indicated by the network device, so that the cell handover of the terminal device group can be efficiently implemented, to resolve a problem of a high handover delay in a scenario in which network resources are limited.

The present disclosure relates to the technical field of communications. Provided are an access method and apparatus, and a device, a readable storage medium and a program product, so as to reduce handover latency. The method comprises: receiving configuration information of a first node; and on the basis of the configuration information, setting a state between a terminal and the first node to a first RRC state, and setting a state between the terminal and a second node to a second RRC state, wherein in the first RRC state, no air interface connection is established between the terminal and the first node, and the second RRC state is RRC_CONNECTED.

A terminal according to one embodiment of the present disclosure comprises: a reception unit that receives a transmission configuration indication (TCI) state switch command, which is an indication of a TCI state for beam reporting initiated by the terminal; and a control unit that determines a TCI state switch delay for application of the TCI state switch command on the basis of whether or not the indicated TCI state is known. The one embodiment of the present disclosure can improve communication quality / throughput.

This invention discloses an AI inference resource decoupling scheduling method and system based on a two-dimensional orthogonal state space. User AI service rights are decomposed into storage rights dimension σ and computing power rights dimension φ, constructing an orthogonal state space S=(σ,φ), where σ and φ change independently and have no causal dependency. Four service modes are derived from the state space: full service, read-only memory, temporary session, and guided recovery. State transitions in the computing power rights dimension are triggered by critical conditions of discrete quota counting: the cost r for a single token generation is defined as the lower limit of physical resources required for a single forward propagation of the model decoder. When the remaining quota Q(t) is less than r, the physical system cannot complete the next calculation, and the state will inevitably transition and terminate the computation flow. State switching is achieved through metadata-level atomic operations, and the execution time is independent of the user data scale. This invention clarifies the inevitability of the technical effect through logical deduction, is applicable to software or hardware-software co-implementation, and solves the problems of resource deadlock, switching latency, and service interruption under subscription systems.

The present disclosure relates to joint bandwidth part switching for a group of UEs. A base station can transmit a message to a group of user equipments (UEs) directing the UEs to change their respective bandwidth parts (BWPs). The message can include, for each of the UEs in the group, a corresponding new BWP. In response to receiving the message, each UE in the group can switch to the corresponding new bandwidth part. The message can be transmitted as part of a group common DCI message. The UE can signal a minimum guard band size required by the UE to the base station. Alternatively, the UE can respond to the message with an acknowledgement message. The base station can configure a virtual common downlink BWP for the group of UEs. The UE drops transmission / reception repetitions that occur during a BWP switching delay period of the UE.

This application discloses a communication handover method, a gateway device, a terminal device, and a readable storage medium. In this method, a first tunnel and a second tunnel sharing the same IP address are established with the first SIM card and the second SIM card of the terminal device, respectively. A primary tunnel and a backup tunnel are determined from the first and second tunnels. The forwarding direction of the active data stream is determined to be the primary tunnel, and the active data stream is transmitted using the primary tunnel in conjunction with IP. A tunnel handover request sent by the terminal device is received, and the forwarding direction of the active data stream is switched to the backup tunnel. The active data stream is transmitted using the backup tunnel in conjunction with IP. This application achieves network handover simply by changing the forwarding direction of the active data stream, without requiring IP address changes or session reconstruction, effectively shortening network handover latency.

The invention belongs to the technical field of electric power communication, and particularly relates to a reliable communication method based on dual-mode communication, and the method comprises the following specific steps: architecture construction and parameter initialization, link quality monitoring and pre-judgment, intelligent switching and data connection, transmission optimization and redundancy guarantee, and redisk and iterative optimization. Single passive switching is abandoned, an early warning, active and emergency three-level intelligent switching strategy is designed, switching delay is shortened from the source, a standby link is awakened in advance for standby in early warning switching, and switching waiting is avoided; emergency switching is taken over immediately when the main link is suddenly interrupted, and interruption confirmation does not need to be waited; the active switching is carried out according to the link quality, and invalid occupation is completely eradicated.

The application provides a kind of offshore 5G and self-organizing network fusion communication method and system, belongs to mobile communication technical field, aims at solving the problems of "ping-pong effect", large switching delay, non-optimal relay selection and discontinuous QoS guarantee of traditional dual-mode communication in complex offshore environment.The application calculates connection quality score by comprehensively reporting communication parameters of terminal from network side decision server, and predicts its future trend;According to the key network parameters such as 5G cell load and ad hoc network path hop number, dynamically adjust the switching threshold T1 and T2.When the predicted CQS will cross the threshold, trigger the pre-registration and session pre-establishment operation in advance to realize seamless switching.In the ad hoc network side, the optimal relay node is selected by the algorithm of stability, load and energy, and dynamic updating is supported.By establishing the mapping rule of 5QI and DSCP and being controlled by 5G core network, the end-to-end QoS continuity is ensured.The application improves the intelligent level, link stability and service experience of offshore communication.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a source network node, a report that indicates a data burst interval and indicates whether to delay handover execution based on the data burst interval. The UE may receive, from the source network node, a command associated with a handover from the source network node to a target network node, where the command is received before or after a data burst based on the data burst interval and one or more handover delay rules. The UE may perform the handover based on receiving the command. In some aspects, the UE may receive a command indicating one or more conditions associated with the handover, where the command indicates the one or more handover delay rules. Numerous other aspects are described.

The invention discloses an RS-485 multi-serial port transceiving control method based on a domestic single-core CPU (central processing unit), and relates to the technical field of RS-485 serial port communication. When serial port communication threads needing to send data exist, sending requests are submitted to a sending request table, priorities of the serial port communication threads are acquired, the serial port communication threads are awakened, and the serial port communication threads are sent to the RS-485 serial port communication table; the manager periodically checks the sending state of each serial port communication thread, controls the sending of each serial port communication thread according to the priority after submission of sending data of a certain serial port communication thread is completed, checks the sending state register and the line state register of the current sending serial port communication thread, and sends the sending state register and the line state register of the current sending serial port communication thread if the sending of the current serial port communication thread is completed or overtime; if yes, the DE / RE pin is set to be in a receiving mode, other threads are allowed to send, switching delay among sending of multiple serial ports caused by scheduling uncertainty of an operating system in a traditional independent thread mode is eliminated, system throughput is improved, CPU overhead is reduced, and real-time performance and fairness are guaranteed.

Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may operate according to active bandwidth parts (BWPs) for multiple component carriers (CCs). A network entity may transmit a non-scheduling downlink control information (DCI) message that indicates, to the UE, BWP switches for multiple CCs. The non-scheduling DCI message may repurpose bits from downlink data scheduling fields to indicate the BWP switches. The UE may receive the non-scheduling DCI message and perform the BWP switches for the multiple CCs. If the UE receives multiple DCI messages indicating BWP switches, the UE may perform the BWP switches in accordance with a quantity of CCs for BWP switching and a reference time. The UE may start a BWP switching delay at the reference time, where the reference time is associated with a resource allocated for feedback by at least one of the multiple DCI messages.

The disclosure relates to RRC based BWP switching delay and use of UE capability information to minimize the amount of schedules BWP switching delay for those UE with capabilities that can properly transmit and receive data under lower BWP switching delay constraints.

The present disclosure relates to a communication method, a terminal, a network device, and a storage medium. The communication method comprises: receiving first information, the first information being used for activating at least two target transmission configuration indicator (TCI) states; receiving a synchronization signal block (SSB) transmitted by a transmission and reception point (TRP) corresponding to each target TCI state, wherein the first SSBs transmitted by the TRPs corresponding to the at least two target TCI states have an overlap in time domain; and on the basis of the received SSBs transmitted by the TRPs corresponding to the target TCI states, determining the switching delay time of the target TCI state s. According to embodiments of the present disclosure, when the first SSBs transmitted by at least two TRPs among mTRPs partially or completely overlap, a terminal can accurately determine the switching delay time of target TCI states.

This invention discloses a 5GC industrial private network handover latency detection method. It utilizes a dual-probe measurement mechanism by deploying a first and second probe on the N2 and N3 interfaces respectively, allowing for more precise timestamp settings on the control plane and data plane. The method also incorporates a 5G synchronization clock to calibrate the clock deviation between the two probes. Furthermore, it calculates multi-level latency by acquiring the differences in start and end timestamps of wireless transmission latency, 5GC forwarding latency, and the processing start and end timestamps of each stage of the protocol stack composed of IP, UDP, and GTP-U. This allows for accurate calculation of the network quality of the operating device, improving detection accuracy. By compiling keepalived to support bidirectional forwarding detection and coordinating with VRRP primary / backup node handover, it achieves millimeter-level fault detection, improving fault detection efficiency, shortening the network fault detection cycle, increasing response speed, and enabling millisecond-level handover, thus enhancing handover efficiency.

Apparatuses, systems, and methods for unified TCI state switching enhancements for mTRP operations in, for example, 5G NR systems and higher versions. For downlink unified TCI state switching during mTRP operation, the UE may determine that a TCI code point having at least two TCI states is switching a TCI state, and a first TCI state is switching to a known target TCI state, and a second TCI state is switching to an unknown target TCI state. The UE may determine a handover delay for the at least two TCI states. The switching delay may be based at least in part on a delay of an unknown target TCI state. The handover delay may be based on an unknown handover delay as defined by version 17 of the 3GPP standard. The handover delay may be reduced compared to an unknown handover delay as defined by version 17 of the 3GPP standard.

Embodiments of the present application provide a timing advance (TA) compensation method, a base station, a terminal, and a storage medium. The method includes by means of an interface between network devices, a target base station to which a target cell belongs transmits, to a source base station to which a source cell belongs, TA compensation related information used for a terminal to perform uplink transmission in the target cell. According to the embodiments of the present application, when a terminal performs cell handover, TA compensation related information used for the terminal to perform uplink transmission in a target cell is transmitted to the terminal, and the terminal may clearly and accurately determine a TA pre-compensation value used for the target cell to which the terminal is handed over, and reasonably perform TA compensation, to improve the cell handover success rate of the terminal and reducing handover delay.

The invention provides a Type-C forward and reverse insertion dynamic switching method and device, electronic equipment and a storage medium, polarity switching trigger information is monitored in a connection state, and technical means of state evaluation before switching, standby path pre-configuration, data flow freezing, atomic switching, verification after switching, state recovery and the like are combined, so that the Type-C forward and reverse insertion dynamic switching is realized. According to the invention, the Type-C interface can complete the dynamic adjustment of the positive and negative plugging polarity under the condition of not disconnecting the connection, thereby reducing the switching delay, reducing the data transmission interruption risk, improving the smoothness and reliability of the connection process, and enhancing the adaptation capability of the Type-C interface to a rotating device, a dynamic wiring device and an innovative terminal form.

The invention discloses a low earth orbit satellite mobile network satellite base station switching method. According to the method, a time interval is initialized and sampled, a satellite orbit parameter and a machine learning signal prediction model are combined, the signal intensity of each satellite at multiple moments in the future is calculated in a prospective mode, and then a switching time interval when a target satellite and a signal intersect is intelligently determined. And the time interval and the interval range are reduced through iteration, and an accurate switching time point is finally determined through successive approximation, so that accurate and smooth switching synchronous with the core network is realized. Compared with the prior art, switching delay and signal interruption can be effectively avoided, and communication quality and user experience are remarkably improved.

A method and system for determining a switching delay for a user equipment (UE) in a wireless communication network are disclosed. The network device determines a search space set group switching capability of the UE based on UE-reported information such as UE category or physical downlink shared channel (PDSCH) processing capability and transmits a target switching delay to the UE according to a minimum switching delay corresponding to the UE's switching capability. The switching capability may include different levels (e.g., first, second, or third switching capabilities), and the target switching delay is adjusted accordingly, with delays scaled based on UE category (e.g., first-category or second-category UE). The method may also account for sub-carrier spacing associated with the UE's bandwidth. Communication between the network and the UE includes radio resource control (RRC) signaling and downlink control signaling to coordinate switching between search space set groups.

The invention particularly relates to a rapid GM switching method based on a distributed priority cache, which is applied to a time sensitive network TSN. The core of the method is that in a normal time synchronization stage of each device in the network, abstract information of a master clock and a high-priority candidate clock in the network is locally cached through extended Sync / Follow-up message implicit learning. When the failure of the current master clock is detected, each device does not need to carry out message exchange in a whole network range, a new consistent master clock can be elected quickly through distributed decision directly based on local cache information, and a port role is determined dynamically, so that switching and synchronization tree convergence are completed within a millisecond level. According to the invention, the problems of long switching delay of a standard BMCA mechanism and network congestion caused by message storm are effectively solved, and the time synchronization reliability and real-time performance of a TSN network under the scenes of industrial control, automatic driving and the like are remarkably improved.

This invention relates to the field of communication technology, specifically a method and system for handover in a lightweight 5G cellular MiFi network. The method includes: identifying the currently connected base station and the current location of the MiFi device; identifying a three-dimensional layout of candidate base stations based on multiple nearby base stations and the MiFi device; determining the expected dwell time based on the candidate base stations and the MiFi device; identifying multiple target handover base stations based on the multiple expected dwell times, multiple candidate base stations, and a preset dwell time threshold; determining a base station handover score based on the target handover base stations and the MiFi device; and identifying the handover MiFi device based on the main link and backup link in the redundant equipment, thus completing the cellular MiFi network handover. This invention can reduce the handover latency and ping-pong handover probability of cellular MiFi networks, achieving smooth handover at the service level.

A terminal according to one embodiment of the present disclosure is provided with: a reception unit that receives information relating to a target cell that is a candidate for handover of a serving cell and information relating to a transmission setting indication (TCI) state; and a control unit that determines a TCI state switching delay on the basis of a list of activated TCI states included in the information relating to the TCI states.

Examples of devices (e.g., user equipment) for reducing cell handover latency in LTM are described. The device receives an LTM cell handover command from a serving cell. The device determines whether a first time or frequency tracking on the target cell is activated prior to the LTM cell handover command. The apparatus determines whether an L1 reference signal received power measurement period is not greater than a predetermined value. The apparatus determines, if at least one condition is satisfied, that the second T / F tracking is not performed before the first uplink message is transmitted on the target cell. The at least one condition includes activation of a first T / F tracking of the target cell prior to the LTM cell handover command, and the L1-RSRP measurement period is not greater than a predetermined value.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a source network node, a report that indicates a data burst interval and indicates whether to delay handover execution based on the data burst interval. The UE may receive, from the source network node, a command associated with a handover from the source network node to a target network node, where the command is received before or after a data burst based on the data burst interval and one or more handover delay rules. The UE may perform the handover based on receiving the command. In some aspects, the UE may receive a command indicating one or more conditions associated with the handover, where the command indicates the one or more handover delay rules. Numerous other aspects are described.

This invention provides a collaborative method for handover decision-making and power allocation in mobile phone direct connection to low-Earth orbit satellite networks, belonging to the field of mobile phone direct connection to low-Earth orbit satellite communication. This invention decouples the original handover problem into two sub-problems: the handover decision of the source satellite and the downlink power allocation of the target satellite. Specifically, the source satellite uses a genetic algorithm to make decisions on user handover timing and target, thereby improving overall handover performance; after the user connects to the target satellite, the latter uses a continuous convex approximation algorithm to jointly optimize the downlink power of both new and existing users, thereby maximizing the system's downlink throughput. This method can effectively improve the handover success rate, reduce handover latency, achieve system load balancing, and significantly improve the downlink throughput of the target satellite after user handover, realizing overall optimization of the handover process in mobile phone direct connection to low-Earth orbit satellite networks.

This invention relates to the field of communication bus technology, and more particularly to a multi-master IIC bus control system and its dynamic arbitration method, including a parameter configuration unit, a dynamic arbitration unit, a dynamic role switching unit, and a slave data synchronization unit. Dynamic arbitration is achieved through a wired-AND mechanism and a readback detection mechanism: the master node determines the arbitration status by comparing its output level with the bus readback level, and switches to slave upon failure; the slave node switches to master upon detecting a bus idle timeout. The slave data synchronization unit captures bus timing data in real time to ensure zero-delay takeover during master-slave switching. During the power-on initialization phase, master and slave roles are allocated through contention timing. This invention solves the problems of bus conflict, switching delay, and data loss in multi-master scenarios, significantly improving system reliability and real-time performance, and is suitable for redundant control and high-reliability equipment.

Various example embodiments of the present disclosure relate to a method, device, apparatus, and computer readable storage medium for a handover delay for conditional handover (CHO) in network energy saving (NES). The method comprises: receiving, from a second device, L1 signaling indicating that a cell serving a first device is to be closed; determining a handover delay associated with a CHO of the first device based on: a reception time point of the L1 signaling; a reception time point of a radio resource control (RRC) reconfiguration message associated with the CHO, the CHO being associated with the NES; and a time point when a CHO condition associated with the NES is satisfied; and completing the CHO within the determined handover delay.

Apparatuses, systems, and techniques to implement a proactive wireless synchronization system that may identify candidate wireless base stations for proactive synchronization and may cause a wireless device to synchronize with a wireless base station prior to transmission of a base station switch command. At least one embodiment pertains to methods of identifying candidate wireless base stations using one or more neural networks, according to various novel techniques described herein.

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive an indication of whether an expected propagation delay change associated with a TCI state switch from a first transmit configuration indicator (TCI) state to a second TCI state satisfies a threshold, the reception of the indication associated with receiving the indication of the switch from the first TCI state to the second TCI state. The UE may apply one or more of a first TCI state switching delay or a first timing adjustment or one or more of a second TCI state switching delay or a second timing adjustment based at least in part on the indication. Numerous other aspects are described.