46 results about "Handover latency" patented technology

An access point (AP) may enable and manage non-primary channel access (NPCA) with a station (STA). The AP and the STA may each specify various switching rules for triggering channel switch from a primary channel to a backup NPCA primary channel for NPCA operation, including rules regarding switching delays by which a switch may need to perform and rules regarding whether a primary channel is occupied by an overlapping basic service set (BSS). The AP and the STA may also exchange various frames that provide a capability indication regarding support for NPCA operation as well as one or more parameters and rules regarding the NPCA operation.

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.

Disclosed in the present invention is a handover method for satellite base stations of a low earth orbit satellite mobile network. The method comprises: a source satellite base station being connected to a UE sending a handover request to a target satellite base station; upon receiving the handover request, the target satellite base station performing handover preparation, and sending handover acknowledgement to the source satellite base station, and the source satellite base station receiving the handover acknowledgement; the source satellite base station notifying the UE connected thereto of a handover decision, the UE disconnecting from the source satellite base station and establishing a new RRC connection with the target satellite base station; and the source satellite base station and the target satellite base station transmitting synchronous data. The handover preparation comprises pre-allocating channel resources. By means of a rapid handover method introduced into a satellite mobile network, the present invention calculates the position of a satellite on the basis of ephemeris, so as to predict the occurrence of handover on a user side, thereby significantly reducing handover latency for users in this scenario.

Provided in the embodiments of the present disclosure is a processing method based on sensing-assisted communication. The method comprises: receiving detection information of a moving target sensed by a sensing cell; and on the basis of the detection information, performing beam adjustment and / or frequency offset pre-compensation. The method can solve the problems in the relevant art of access / handover latency being relatively long and an access / handover success rate being relatively low since it is impossible to perform frequency offset compensation in a timely manner on a user moving at a high speed, and control not being accurate enough since the number of beams and the coverage range are fixed.

An access point (AP) may enable and manage non-primary channel access (NPCA) with a station (STA). The AP and the STA may each specify various switching rules for triggering channel switch from a primary channel to a backup NPCA primary channel for NPCA operation, including rules regarding switching delays by which a switch may need to perform and rules regarding whether a primary channel is occupied by an overlapping basic service set (BSS). The AP and the STA may also exchange various frames that provide a capability indication regarding support for NPCA operation as well as one or more parameters and rules regarding the NPCA operation.

The present disclosure relates to a unified transmission configuration indicator framework. A user equipment (UE) is configured to receive a command for a transmission configuration indicator (TCI) state change for a joint TCI state including uplink (UL) and downlink (DL) signals; decode the joint TCI state command and perform measurements necessary for reception and transmission in the target TCI state, including path loss (PL) measurements for UL channels; and switch to reception of DL signals and transmission of UL signals in the target TCI state no later than a duration of a switching delay.

The present disclosure relates to NR handover, RLM, BFD, and CBD with CCA. Some aspects relate to apparatuses and methods implementing mechanisms for performing handover, radio link monitoring (RLM), beam failure detection (BFD), and candidate beam detection (CBD) within unlicensed spectrum upon occurrence of a listen-before-talk (LBT) failure and / or upon a user equipment (UE) performing a receive (RX) beam sweep. For example, a UE is configured to receive a handover command for connecting to a target cell. The UE is further configured to determine a search time and an interruption time uncertainty during a handover procedure initiated by the handover command and in response to an LBT failure or the UE performing a beam sweep operation. The UE can further determine a handover delay based on the search time and the interruption time uncertainty. The UE can stop the handover procedure in response to a time period for performing the handover procedure exceeding the handover delay.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a radio link failure (RLF) condition associated with a first network node. The UE may start an adaptive timer as a result of detecting the RLF condition. The UE may evaluate the RLF condition. The UE may stop the adaptive timer upon an initiation of a cell recovery procedure or at a stop time associated with a handover delay. Numerous other aspects are described.

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.

Apparatus and methods for beam indication for Layer 1 / Layer 2 triggered mobility (LTM) are disclosed. Advantages of the apparatus / method include reduction of cell handover latency. In one aspect, a user equipment device (UE) receives a Media Access Control Control Element (MAC-CE) from a serving cell, the MAC-CE including a candidate cell and an indication of activation of one or more Transmission Configuration Indicator (TCI) states for the candidate cell. The UE also receives a cell handover command from the serving cell via low layer signaling, the cell handover command indicating the candidate cell as the target cell. The UE also switches communication with the serving cell to communication with the target cell in response to the cell handover command, wherein communication with the target cell includes communicating with the target cell by applying at least one TCI state of the one or more TCI states.

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.

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

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.

Some aspects relate to apparatuses and methods for implementing mechanisms for performing handover, radio link monitoring (RLM), beam failure detection (BFD), and candidate beam detection (CBD) within the unlicensed spectrum when a listen-before-talk (LBT) failure occurs and / or when a user equipment (UE) performs receiving (RX) beam sweeping. For example, a UE is configured to receive a handover command to connect to a target cell. The UE is further configured to determine a search time and an interruption time uncertainty during a handover procedure initiated by the handover command and in response to a LBT failure or the UE performing a beam sweeping operation. The UE can further determine a handover delay based on the search time and the interruption time uncertainty. In response to a time period for performing the handover procedure exceeding the handover delay, the UE can cease the handover procedure.

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 application discloses a kind of automatic switching method of satellite network and ground base station network, and the application relates to satellite-ground network switching technical field, solve the technical problem that resource reservation mechanism is inefficient, switching execution stage service interruption duration is long, the application is by calculating the switching probability of candidate target network, and resource reservation duration is allocated based on the relationship between switching probability and preset threshold, and the life cycle of resource is managed by hierarchical resource reservation timer, reduce invalid resource reservation, improve network overall capacity, secondly, by enhanced switching request carrying transport layer inheritance instruction and pre-configured information reservation instruction, information sharing channel is established between candidate network, subsequent switching does not need to reapply resource after once switching, solve the problem of high switching delay, hierarchical resource reservation timer realizes the efficient recovery of resource, so that network can adapt to environmental and load changes, continuously improve switching performance.

The embodiments of the present application disclose a data transmission method, a communication apparatus, a communication system, and a storage medium, which are applied to the technical field of communications and are used for reducing L2 handover latency. The method in the embodiments of the present application comprises: receiving a handover command, wherein the handover command is used for instructing a terminal device to hand over from a source node to a target node; and using a first parameter to perform data packet transmission with the target node, wherein the first parameter is a parameter used for transmission between the terminal device and the source node, and the first data packet is a data packet processed by the source node. According to the embodiments of the present application, using parameters employed for performing transmission with a source node prevents data interruptions caused by PDCP reestablishment, data recovery, and RLC reestablishment, thereby preventing latency caused by the data retransmission introduced in these processes.