Abstract: This application provides a communications method and a communications apparatus, to reduce storage resources required by an access network device to store a context of a terminal device. The method includes: The access network device gathers terminal devices that have a same attribute in a group, where a context of each terminal device is divided into two parts: a common context and a dedicated context, the common context is shared by all the terminal devices in the group, and the dedicated context is a context specific to the terminal device. The access network device stores one common context for each group and stores a dedicated context of each terminal device in the group, to maintain the context of each terminal device.

Abstract: The embodiments of this application provide a communication method and an apparatus, and relate to the field of communications technologies, to successfully report MCG link failure information. The method includes: When a terminal device sends a first data unit to a first access network device via an MCG split bearer, the terminal device determines that an MCG link failure occurs. In addition, the terminal device sends a second data unit to a second access network device via an SCG split bearer, so that the second access network device sends the second data unit to the first access network device, where the second data unit includes information used to indicate the MCG link failure.

Abstract: This disclosure provides a mobility performance optimization method and a communication apparatus. The method includes: receiving indication information from a second network device, where the indication information indicates a terminal device to generate a successful handover report (SHR) based on handover from a first cell of a first network device to a second cell of the second network device; storing context information of the terminal device on the first network device based on the indication information; receiving the SHR from a third network device, where the third network device is a network device connected to the terminal device when the terminal device sends the SHR; and optimizing mobility performance based on the context information of the terminal device on the first network device and the SHR.

Abstract: A three-dimensional (3D) memory device includes a memory stack including conductive layers and dielectric layers interleaving the conductive layers, and a channel structure extending through the memory stack along a vertical direction. The channel structure has a plurality of protruding portions protruding along a lateral direction and facing the conductive layers, respectively, and a plurality of normal portions facing the dielectric layers, respectively, without protruding along the lateral direction. The channel structure includes a plurality of blocking structures in the protruding portions, respectively, and a plurality of storage structures in the protruding portions and over the plurality of blocking structures, respectively. A vertical dimension of each of the blocking structures is nominally the same as a vertical dimension of a respective one of the storage structures over the blocking structure.

Abstract: A first opening extending vertically through a dielectric stack is formed above a substrate. The dielectric stack includes vertically interleaved dielectric layers and sacrificial layers. Parts of the sacrificial layers facing the opening are removed to form a plurality of first recesses. A plurality of stop structures are formed along sidewalls of the plurality of first recesses. A plurality of storage structures are formed over the plurality of stop structures in the plurality of first recesses. The plurality of sacrificial layers are removed to expose the plurality of stop structures from a plurality of second recesses opposing the plurality of first recesses. The plurality of stop structures are removed to expose the plurality of storage structures. A plurality of blocking structures are formed over the plurality of storage structures in the plurality of second recesses.

Abstract: The technology of this application relates to an energy saving method and an apparatus. The method includes an AI device receives first data from a first network device and a second network device; the AI device performs an AI inference based on the first data to obtain an energy saving policy, and the AI device separately sends the energy saving policy to the first network device and the second network device. According to the method and the apparatus in embodiments of this application, accuracy and robustness of the energy saving policy can be improved, and in a scenario in which network traffic fluctuates, a quantity of times of frequently switching on or switching off a cell of the second network device can be reduced.

Abstract: This application provides a communication method and apparatus. The method includes: A first access network device receives a first message from a second access network device, where the first message indicates that at least two I-RNTI rules of the second access network device remain valid. The first access network device determines, according to at least one valid I-RNTI rule of the second access network device, an access network device corresponding to an I-RNTI of a terminal device, and obtains context information of the terminal device from at least one of the determined access network devices.

Abstract: This application provides an information transmission method and an apparatus. A core network device obtains second public land mobile network (PLMN) information of a second cell before a cell handover of a terminal device. After the terminal device is handed over to a first cell, the core network device obtains first PLMN information of the first cell. When a second PLMN does not belong to a PLMN list and a first PLMN belongs to the PLMN list, the core network device sends first information to a first access network device corresponding to the first cell, where the first information includes the PLMN list, and the PLMN list includes a PLMN set that allows the terminal device to perform minimization of drive test.

Abstract: This application provides a communication method and apparatus. The communication method includes: User equipment performs application layer measurement and access stratum measurement on a first service in an idle state or an inactive state, to obtain a first measurement result and a second measurement result, where the first measurement result includes an application layer measurement result obtained by the user equipment in a first time period, the second measurement result includes an access stratum measurement result obtained by the user equipment in a second time period, and the first time period overlaps the second time period. The user equipment in a connected state sends the first measurement result and the second measurement result to a first network device, where there is a correspondence between the first measurement result and the second measurement result.

Abstract: The disclosure provides communication methods and apparatuses. One example method including a first access network device sends a first message to a terminal device and a second message to a core network device. The first message is used to indicate the terminal device to enter an inactive state. The second message carries context information and a first security verification parameter of the terminal device, and the first security verification parameter is used to perform security verification on the terminal device. The first access network device receives a third message from a second access network device, where the third message is used to request the context information of the terminal device. The first access network device sends a fourth message to the second access network device, where the fourth message is used to indicate the first access network device not to provide the second access network device with the context information.

Abstract: Embodiments of this application provide a communication method and a communication apparatus. In the method, a terminal device obtains a first RA report that includes information about a random access procedure initiated by the terminal device to a source secondary access network device. After the master access network device of the terminal device changes from a source master access network device to a target access network device, the terminal device sends a first message to the target access network device. The first message includes the first RA report and first identification information, and the first identification information indicates the source master access network device.

Abstract: This application provides a communication method and a communication apparatus. The method includes: A first network entity obtains first information, where the first information includes any one of the following: signal measurement results of a terminal device in at least two cells, and a relationship of the signal measurement results of the terminal device in the at least two cells, where the at least two cells include a first cell and a second cell; and the first network entity determines, based on second information, an adjustment manner for adjusting transmit power of the first cell. According to this application, even if signal quality of the first cell cannot be accurately measured, the adjustment manner for adjusting the transmit power of the first cell can be determined.

Abstract: A cell handover method and an apparatus are provided. The method includes: determining an AI target cell, where the AI target cell is a predicted serving cell to which a terminal device can be handed over; and sending a first request message, where the first request message is used to request a network device corresponding to the AI target cell to allocate, to the terminal device, a resource corresponding to the AI target cell. The first request message indicates at least one of the following: identification information of the AI target cell, a type of the handover being AI handover, activation time information, expiration time information, prediction accuracy of the AI target cell, or the like. The activation time information indicates an earliest moment at which the terminal device is handed over to the AI target cell.

Abstract: A mobility load balancing method and apparatus are disclosed. The method includes: obtaining first network status information of a first network device; obtaining information indicating a network status of a second network device; obtaining a to-be-effective first mobility load balancing MLB policy based on the first network status information and the information indicating a network status of the second network device; and sending the first MLB policy to the second network device. The first MLB policy includes at least one of the following content: a configuration parameter used to adjust a load of the first network device and time information corresponding to the configuration parameter, a configuration parameter used to adjust a load of the second network device and time information corresponding to the configuration parameter, or reliability information of the first MLB policy.

Abstract: A method is provided, including: configuring a conditional candidate primary secondary cell group cell PSCell addition or change for a terminal device; and performing, by a master network device, early data transmission oriented to a network device to which a candidate PSCell belongs, and for example, before the terminal device accesses the candidate PSCell, sending a data packet to the network device to which the candidate PSCell belongs, where a form of the data packet is a packet data convergence protocol protocol data unit, and the data packet includes a data packet on an MN terminated secondary cell group bearer and/or a data packet on an MN terminated split bearer. In this way, after the terminal device accesses a candidate network device, the candidate network device may send forwarded data to the terminal device, to reduce a data transmission delay.

Abstract: A communication system and apparatus for measuring quality of experience (QoE) are provided. The communication system includes a source access network device and a target access network device, wherein the source access network device is configured to determine that a terminal device is handed over from the source access network device to the target access network device, and the target access network device is configured to receive first indication information from the source network device, where the first indication information indicates a quality of experience (QoE) measurement that has been started by the terminal device. When load of an access network device is high, the QoE measurement executed by the terminal device is adjusted to reduce the load of the access network device and improve communication efficiency.

Abstract: In a communication method, a first network node sends a first message to a second network node, where the first message includes first configuration information. The first network node receives a second message from the second network node, where the second message includes second configuration information determined based on the first message. The first network node includes at least one of a packet data convergence protocol layer, a service data adaptation protocol layer, or a radio resource control protocol layer. The second network node includes at least one of a radio link control protocol layer, a media access control layer, or a physical layer.

Abstract: A communication method and apparatus resolves a problem that a resource usage status reported by a network device is inaccurate. The method includes: a first network device receives resource status information from a second network device, where the resource status information includes LBT-related resource information; and the first network device determines a resource usage status of the second network device based on the resource status information. In the foregoing manner, the first network device may determine a resource that is to be released by the second network device, a resource that may be occupied, and the like. In this way, the first network device may perform conversion on the resource usage status of the second network device, to obtain an accurate resource usage status, and in particular, have more accurate estimation on an estimated future resource usage status.

Abstract: This application discloses a communication method, apparatus, and system, so that a load balancing function between network elements is improved and enhanced, and an exchange process is simple, direct, and effective. In the method, a first network device sends a message requesting to change a mobility parameter, wherein the message is at a beam granularity.

Abstract: Embodiments of this application provide a communication method and a communication apparatus. The method includes: A terminal device determines that a connection establishment failure between the terminal device and a first cell occurs, records first connection establishment failure information, and starts a timer; the terminal device determines, depending on whether the timer runs, a manner of processing connection establishment failure information; and the terminal device sends a connection establishment failure report, where the connection establishment failure report indicates that the connection establishment failure occurs between the terminal device and the first cell. In this way, memory usage and power consumption of the terminal device can be reduced.