A cell switching method and device

Abstract

The present application provides a cell handover method and apparatus, wherein the method includes: a terminal receiving a handover command sent by a network device, the handover command being used to instruct the terminal to switch from connecting to a source cell to connecting to a target cell; the terminal performing time-division handover between a first data operation and a second data operation at a first time interval, the first data operation being data and / or signaling interaction between the terminal and the source cell, and the second data operation being data and / or signaling interaction between the terminal and the target cell; and the terminal receiving a command sent by the network device to release the source cell, stopping the time-division handover. This process can effectively improve DAPS handover efficiency and performance benefits.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a cell switching method and device. Background Art

[0002] In some scenarios, such as when the source cell's signal strength is weak and the desired network device is out of range, the terminal needs to switch from the source cell to the target cell. A standard hard handover immediately disconnects the terminal from the source cell's signaling and data transmission. Compared to a hard handover, a soft handover reduces service interruption time, bringing it close to or equal to 0ms, and improves handover reliability, providing the terminal with a seamless communication experience.

[0003] The 0ms handover performed by the terminal is essentially a soft handover: when the handover occurs, the terminal needs to disconnect the air interface signaling connection with the source cell only after successfully completing random access to the target cell; during the handover process, the terminal simultaneously receives and sends signaling and data from the source cell and the target cell to ensure uninterrupted service.

[0004] The dual active protocol stack (DAPS) switching solution can achieve 0ms interruption switching. Figure 1 As shown in the DAPS handover process diagram, the source cell sends a handover command (HO cmd) to the terminal device, and the terminal device initiates access to the target cell. Then, the terminal device completes access to the target cell and receives and sends signaling and data in the target cell. In this solution, after the terminal device initiates access, the terminal device continues to communicate with the source cell, that is, Figure 1 The dual-cell connection interval is shown in Figure 1. Finally, after receiving the release command from the target cell, the terminal device deletes the source cell and communicates only with the target cell, completing the handover. Because the terminal device communicates with both the source and target cells simultaneously during the handover process, a zero-interruption handover is achieved.

[0005] During a dual-cell connection, a terminal device needs to communicate with both the source and target cells simultaneously. However, most terminal devices have limited uplink channel resources, and some low-cost terminal devices may also have limited receive channel resources. Limited channels may prevent the terminal from completing the DAPS handover process, reducing the application scope and performance benefits of the DAPS handover function.

[0006] In addition, the current 3GPP standard only allows the RRC connection reconfiguration message to contain the configuration parameters of one primary serving cell (PCell), and does not allow it to contain the configuration parameters of two primary serving cells at the same time. If the receiving or sending capability of the terminal device in the source cell during the DAPS switching process is different from the receiving or sending capability of the terminal device in the source cell before the DAPS switching, then before the source cell sends the DAPS switching command to the terminal device, it needs to first send an RRC connection reconfiguration message containing the configuration parameters of the source cell to the terminal device, and then send a DAPS switching command containing the configuration parameters of the target cell. Among them, the DAPS switching command is included in the RRC connection reconfiguration message. The above processing will result in a very low efficiency of the DAPS switching process. Summary of the Invention

[0007] In a first aspect, an embodiment of the present application provides a cell handover method, the method comprising:

[0008] The terminal receives a handover command sent by a network device, where the handover command is used to instruct the terminal to switch from being connected to a source cell to being connected to a target cell;

[0009] The terminal performs time division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell;

[0010] The terminal receives a command sent by the network device to release the source cell, and stops the time division switching.

[0011] In an embodiment of the present application, a terminal performs time division switching between a first data operation and a second data operation according to a first time interval, wherein the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell. This process can avoid the terminal being unable to support DAPS switching in certain inter-frequency scenarios when receiving channel resources and / or sending access resources are limited, or the terminal having to reduce the maximum sending and / or receiving capacity of the source cell because the channel resources of the cell need to be transferred to the target cell for use, thereby expanding the application scope of DAPS switching and improving DAPS switching efficiency and performance benefits.

[0012] In one possible implementation, the first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell; the first data operation is to send data and / or signaling to the source cell, and the second data operation is to send data and / or signaling to the target cell.

[0013] In a possible implementation, the time division switching is indicated by the network device through at least one of the following information: channel configuration information, channel scheduling information, reference signal configuration information, and reference signal scheduling information.

[0014] In a possible implementation, the network device configures the first time interval in the time division switching in at least one of the following ways: dynamic configuration, periodic configuration, and configuration according to a fixed pattern.

[0015] In a possible implementation, the time division switching is determined by the terminal.

[0016] In one possible implementation, the first time interval is determined according to terminal capabilities, and the terminal capabilities include at least one of the following information: the second time interval determined by the terminal, the maximum sending or receiving capability of the first data operation, and the maximum sending or receiving capability of the second data operation.

[0017] In a possible implementation manner, the terminal sends the terminal capability to the network device; or the terminal determines the first time interval according to the terminal capability.

[0018] In a possible implementation, the first time interval is located on a low-priority data operation of the first data operation and the second data operation, and the priority is determined according to a processing priority of a channel and / or a reference signal of the first data operation and the second data operation.

[0019] In a possible implementation, the first time interval is located on the first data operation.

[0020] In a possible implementation manner, the terminal discards the data and / or signaling in the first time interval.

[0021] In one possible implementation, the number of uplink channels and / or downlink channels of the terminal is N, the number of uplink channels and / or downlink channels for communication between the terminal and the source cell is M1, and the number of uplink channels and / or downlink channels for communication between the terminal and the target cell is M2. When M1+M2≤N, the first time interval is 0us; when M1+M2>N, the first time interval is greater than 0us.

[0022] In a possible implementation, the first time interval is 0 us, 35 us, 140 us, 200 us, 210 us, or 300 us.

[0023] In one possible implementation, when the first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell, the terminal interrupts sending data and / or signaling to the source cell within a first time interval, and / or the terminal interrupts sending data and / or signaling to the target cell within the first time interval.

[0024] In one possible implementation, when the first data operation is that the terminal sends data and / or signaling to the source cell, and the second data operation is that the terminal sends data and / or signaling to the target cell, the terminal interrupts receiving the data and / or signaling sent by the source cell within the first time interval, and / or the terminal interrupts receiving the data and / or signaling sent by the target cell within the first time interval.

[0025] In a second aspect, an embodiment of the present application provides a cell handover method, the method comprising:

[0026] The network device instructs the terminal to perform time division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell;

[0027] The network device determines that the terminal is connected to the target cell, and sends a command to the terminal to release the source cell.

[0028] In one possible implementation, the first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell; or the first data operation is that the terminal sends data and / or signaling to the source cell, and the second data operation is that the terminal sends data and / or signaling to the target cell.

[0029] In a possible implementation, the time division switching is indicated by the network device through at least one of the following information: channel configuration information, channel scheduling information, reference signal configuration information, and reference signal scheduling information.

[0030] In a possible implementation, the network device configures the first time interval in the time division switching in at least one of the following ways: dynamic configuration, periodic configuration, and configuration according to a fixed pattern.

[0031] In one possible implementation, the first time interval is determined according to terminal capabilities, and the terminal capabilities include at least one of the following information: the second time interval determined by the terminal, the maximum sending or receiving capability of the first data operation, and the maximum sending or receiving capability of the second data operation.

[0032] In a possible implementation manner, the network device receives terminal capabilities sent by the terminal, and determines the first time interval according to the terminal capabilities.

[0033] In a possible implementation, the first time interval is 0 us, 35 us, 140 us, 200 us, 210 us, or 300 us.

[0034] In one possible implementation, the network device includes a first network device and a second network device, wherein the source cell belongs to the first network device, the target cell belongs to the second network device, and the first network device and the second network device exchange terminal capabilities to determine the same first time interval; or the first network device and the second network device exchange the first time interval.

[0035] In one possible implementation, the network device is also used to obtain the parallel capability of the first data operation and the second data operation from the terminal, and instruct the terminal to perform time-division switching or parallel operation based on the parallel capability and the terminal capability of time-division switching, where the parallel operation is the parallel execution of the first data operation and the second data operation.

[0036] In a possible implementation manner, the handover command includes configuration parameters of the source cell and the target cell.

[0037] In a third aspect, an embodiment of the present application provides a communication device, which includes a receiving module and a processing module, wherein:

[0038] A receiving module, configured to receive a handover command sent by a network device, wherein the handover command is used to instruct the terminal to switch from being connected to a source cell to being connected to a target cell;

[0039] a processing module, configured to perform time division switching between a first data operation and a second data operation at a first time interval, wherein the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell;

[0040] The receiving module is further configured to receive a command sent by the network device to release the source cell and stop the time division switching.

[0041] In a fourth aspect, an embodiment of the present application provides a communication device, which includes a processing module and a sending module, wherein:

[0042] a sending module, configured to instruct a terminal to perform time division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and a source cell, and the second data operation is data and / or signaling interaction between the terminal and a target cell;

[0043] a processing module, configured to determine whether the terminal is connected to the target cell;

[0044] The sending module is further configured to send a command to release the source cell to the terminal.

[0045] In a fifth aspect, an embodiment of the present application provides a device comprising a communication interface and a processor, wherein the communication interface is used for the device to communicate with other devices, such as for transmitting and receiving data or signals. Exemplarily, the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces, and the other devices may be network devices. The processor is used to call a set of programs, instructions, or data to execute the method described in the first aspect above. The device may further include a memory for storing programs, instructions, or data called by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, the method described in the first aspect above can be implemented.

[0046] Exemplarily, the communication interface is configured to receive a switching command sent by a network device;

[0047] The processor is configured to perform time division switching between the first data operation and the second data operation according to a first time interval.

[0048] In a sixth aspect, an embodiment of the present application provides a device comprising a communication interface and a processor, wherein the communication interface is used for the device to communicate with other devices, such as transmitting and receiving data or signals. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and the other device may be a terminal. The processor is used to call a set of programs, instructions or data to execute the method described in the second aspect above. The device may also include a memory for storing programs, instructions or data called by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, the method described in the second aspect above can be implemented.

[0049] Exemplarily, the processor is configured to determine that the terminal is to switch from being connected to a source cell to being connected to a target cell;

[0050] The communication interface is used to instruct the terminal to perform time division switching between the first data operation and the second data operation according to a first time interval.

[0051] In the seventh aspect, an embodiment of the present application also provides a communication device, characterized in that the communication device includes a processor, a transceiver, a memory, and computer execution instructions stored in the memory and executable on the processor, and when the computer execution instructions are executed, the communication device executes the method in the first aspect or any possible implementation of the first aspect.

[0052] In the eighth aspect, an embodiment of the present application also provides a communication device, characterized in that the communication device includes a processor, a transceiver, a memory, and computer execution instructions stored in the memory and executable on the processor, and when the computer execution instructions are executed, the communication device executes the method in the second aspect or any possible implementation of the second aspect.

[0053] In the ninth aspect, an embodiment of the present application also provides a computer-readable storage medium, which stores computer-readable instructions. When the computer-readable instructions are executed on a computer, the computer executes the method in the first aspect or any possible implementation of the first aspect.

[0054] In the tenth aspect, an embodiment of the present application also provides a computer-readable storage medium, including instructions, which, when executed on a computer, enables the computer to execute the method in the second aspect or any possible implementation of the second aspect.

[0055] In an eleventh aspect, an embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method of the first aspect or any possible implementation of the first aspect. The chip system may be composed of a chip or may include a chip and other discrete devices.

[0056] Optionally, the chip system also includes a transceiver.

[0057] A transceiver, configured to receive a switching command sent by a network device;

[0058] The processor is configured to perform time division switching between the first data operation and the second data operation according to a first time interval.

[0059] In a twelfth aspect, an embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method in the second aspect or any possible implementation of the second aspect. The chip system may be composed of a chip or may include a chip and other discrete devices.

[0060] Optionally, the chip system also includes a transceiver.

[0061] Exemplarily, the processor is configured to determine that the terminal is to switch from being connected to a source cell to being connected to a target cell;

[0062] The transceiver is used to instruct the terminal to perform time division switching between the first data operation and the second data operation according to a first time interval.

[0063] In the thirteenth aspect, an embodiment of the present application also provides a computer program product, comprising instructions, which, when executed on a computer, enables the computer to execute a method as in the first aspect or any possible implementation of the first aspect, or to execute a method as in the second aspect or any possible implementation of the second aspect.

[0064] In the fourteenth aspect, an embodiment of the present application provides a system, which includes the device provided in the third aspect or the fifth aspect, and the device provided in the fourth aspect or the sixth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic diagram of a DAPS switching process provided in an embodiment of the present application;

[0066] Figure 2A A schematic diagram of a wireless communication system provided in an embodiment of the present application;

[0067] Figure 2B A schematic diagram of a specific DAPS switching process provided in an embodiment of the present application;

[0068] Figure 2C A schematic diagram of a service transmission situation during a DAPS switching process provided in an embodiment of the present application;

[0069] Figure 3A A flow chart of a cell switching method is provided for an embodiment of the present application;

[0070] Figure 3B A schematic diagram of a network scenario consisting of a target cell and a source cell provided in an embodiment of the present application;

[0071] Figure 3C A schematic diagram of configuring a first time interval provided in an embodiment of the present application;

[0072] Figure 3D A communication diagram of an uplink channel and a downlink channel coupled with each other provided in an embodiment of the present application;

[0073] Figure 4 A structural block diagram of a communication device provided in an embodiment of the present application;

[0074] Figure 5 This is a structural block diagram of another communication device provided in an embodiment of the present application;

[0075] Figure 6 A schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0076] The technical solution provided by the present application is further described below with reference to the accompanying drawings and examples. It should be understood that the system structure and business scenarios provided in the examples of the present application are mainly for explaining some possible implementation methods of the technical solution of the present application and should not be interpreted as a unique limitation on the technical solution of the present application. Those skilled in the art will appreciate that with the evolution of the system and the emergence of newer business scenarios, the technical solution provided by the present application can still be applicable to the same or similar technical problems.

[0077] It should be understood that the technical solutions provided in the embodiments of the present application include methods for serving cell switching in wireless communications. These technical solutions solve the same or similar problems. In the following descriptions of the specific embodiments, some repetitions may not be repeated, but these specific embodiments should be considered as having been referenced and can be combined with each other.

[0078] First, the terms involved in the embodiments of this application are explained.

[0079] In wireless communication systems, devices can be divided into those that provide wireless network services and those that use them. Devices that provide wireless network services are those that comprise the wireless communication network and can be referred to as network equipment or network elements. Network equipment can be a base station or access point, or it can refer to the equipment in the access network that communicates with wireless terminals over the air interface through one or more sectors. A base station can convert received air frames into and from IP packets, acting as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station also coordinates the management of air interface attributes. For example, a base station can be a base transceiver station (BTS) in global system of mobile communication (GSM) or code division multiple access (CDMA), a base station (NodeB, NB) in wideband code division multiple access (WCDMA), an evolutionary node B (eNB or eNodeB) in long term evolution (LTE), a relay station or access point, a base station (gNB) in a 5G network, or an integrated access and backhaul node (IAB) node. Depending on the physical form or transmission power of the base station, the base station can be divided into a macro base station or a micro base station. A micro base station is sometimes also called a small base station or a small cell, which is not limited here.

[0080] Devices that use wireless network services are usually located at the edge of the network and can be referred to as terminals. Terminals can establish connections with network devices and provide users with specific wireless communication services based on the services of network devices. It should be understood that due to the closer relationship between terminals and users, they are sometimes also referred to as user equipment (UE) or subscriber units (SU). In addition, compared to base stations that are usually placed in fixed locations, terminals often move with users and are sometimes also referred to as mobile stations (MS). In addition, some network devices, such as relay nodes (RN) or wireless routers, are sometimes also considered terminals because they have UE identities or belong to users.

[0081] Specifically, the terminal can be a mobile phone, tablet computer, laptop computer, wearable device (such as smart watch, smart bracelet, smart helmet, smart glasses), and other devices with wireless access capabilities, such as smart cars, various Internet of Things (IoT) devices, including various smart home devices (such as smart meters and smart appliances) and smart city devices (such as security or monitoring equipment, smart road traffic facilities), etc.

[0082] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0083] See also Figure 2A , Figure 2A A wireless communication system is provided in an embodiment of the present application, such as Figure 2A As shown, in this wireless communication system, the network device can provide communication coverage for a specific geographical area through an integrated or external antenna device. One or more terminals within the communication coverage area of ​​the network device can access the network device.

[0084] It should be understood that the wireless communication system can comply with the wireless communication standards of the Third Generation Partnership Project (3GPP), or can comply with other wireless communication standards, such as the 802 series (such as 802.11, 802.15, or 802.20) of the Institute of Electrical and Electronics Engineers (IEEE). Figure 1Although only one network device and one terminal are shown in the figure, the wireless communication system may also include other numbers of terminals and network devices. In addition, the wireless communication system may also include other network devices, such as core network devices.

[0085] Terminals and network devices should be aware of the predefined configurations of the wireless communication system, including the radio access technologies (RATs) supported by the system and the system-specified radio resource configurations, such as the basic configurations of radio frequency bands and component carriers (CCs). These predefined system configurations can be part of the standard protocols of the wireless communication system or determined through interaction between the terminal and network devices. The content of the relevant standard protocols may be pre-stored in the memory of the terminal and network devices, or embodied in the hardware circuits or software code of the terminal and network devices.

[0086] A CC is a frequency range specified by the system. This frequency range is determined by the CC's center frequency (referred to as the carrier frequency) and the CC's bandwidth. Through predefined system configurations, a terminal can identify the set of uplink carriers for uplink data transmission and send data on one or more carriers within that set. Similarly, a network device can identify the set of downlink carriers for downlink data transmission and send data on one or more carriers within that set.

[0087] In the wireless communication system, the terminal and the network device may support one RAT (such as 5G NR, 4G LTE or RAT of a future evolution system), or may support multiple RATs. The manner in which the terminal and the network device support one RAT may be referred to as standalone deployment (SA); the manner in which the terminal and the network device support multiple RATs may be referred to as non-standalone deployment (NSA), or dual connectivity (DC). Specifically, dual connectivity includes but is not limited to E-UTRA_NR dual connectivity (E-UTRA NR dual connectivity, EN-DC), NR_E-UTRA dual connectivity (NR E-UTRA dual connectivity, NE-DC), NR_NR dual connectivity (NR_NR dual connectivity, NR-NR DC), LTE-LTE dual connectivity (LTE_LTE dual connectivity, LTE-LTE DC) or other multi-RAT dual connectivity (MR-DC).

[0088] It should be noted that in the embodiment of the present application, the terminal can perform carrier switching within the frequency band, for example, switching from CC1 of NR UL to CC2, and can also perform carrier switching across frequency bands, for example, switching from CC1 of LTE UL to CC2 of NR UL. The embodiment of the present application is applicable to both switching methods.

[0089] Figure 2B This is a schematic diagram of a terminal execution process in a soft handover provided in an embodiment of the present application. Figure 2B As shown in the figure, the source base station, the target base station, the authentication management function (AMF), and the user plane function (UPF) constitute the network side. The link through which the terminal receives signals through the source cell is denoted as the downlink (DL). The link through which the terminal uploads signals through the source cell is denoted as the uplink (UL). Similarly, data transmission in the uplink can be referred to as uplink data transmission or uplink transmission, and data transmission in the downlink can be referred to as downlink data transmission or downlink transmission.

[0090] During the soft handover process, the terminal first performs uplink data transmission and / or downlink data transmission with the network side through the source cell, and sends a measurement report to the source cell. When it is necessary to switch cells, the source cell sends a handover (HO) request to the target cell, the target cell approves the terminal access, and sends an HO request confirmation character (ACK) to the source cell. The source cell sends an RRC connection reconfiguration request containing a handover command to the terminal, the terminal searches for the target cell, completes the random access process in the target cell, and replies to the target cell with an RRC connection reconfiguration completion response. The terminal performs uplink data transmission and / or downlink data transmission in the source cell and the target cell until it receives the RRC connection reconfiguration release from the target cell. The terminal then disconnects the uplink data transmission and / or downlink data transmission in the source cell, and only performs uplink data transmission and / or downlink data transmission in the target cell.

[0091] Figure 2C A schematic diagram of a transmission service situation during a soft switching process provided in an embodiment of the present application is shown as follows: Figure 2CAs shown, during the DAPS switching (soft switching) process, for downlink transmission services, after the terminal receives a switching request from the source cell, it searches for the target cell, receives msg2 and msg4 of the random access process in the target cell, receives the downlink data of the target cell and the source cell, and the switching is completed without interruption; for uplink transmission services, after the terminal receives a switching request from the source cell, it sends a random access request and msg3 of the random access process to the target cell, sends the uplink data of the target cell and the source cell, and the switching is completed without interruption.

[0092] In addition, during the DAPS handover process, after the terminal receives a handover request from the source cell, it will release the secondary cell in the source cell carrier set; DAPS handover only switches between the source cell and the target cell.

[0093] As described above, DAPS handover can significantly improve service transmission quality during cell handover, shorten data transmission interruptions, and prevent data or signaling loss. However, the terminal needs to maintain service transmission with both the source and target cells simultaneously, ensuring sufficient RF analog channel resources, baseband digital channel resources, and baseband processing resources for receiving and transmitting data in at least two cells. For terminals, channel and processing resources are limited, especially uplink transmission channel resources, due to implementation costs. Therefore, implementing DAPS handover with limited channel resources is an urgent issue.

[0094] Based on this, see Figure 3A , Figure 3A A flow chart of a cell switching method is provided for an embodiment of the present application, such as Figure 3A As shown, the method includes the following steps:

[0095] 301. A network device sends a handover command to a terminal, where the handover command is used to instruct the terminal to switch from being connected to a source cell to being connected to a target cell.

[0096] The network device within the coverage of the source cell instructs the terminal to switch from the source cell to the target cell in some cases. For example, the signal strength of the source cell is weak and not as strong as the signal strength of the target cell. The network device sends a switching instruction to the terminal.

[0097] In the embodiment of the present application, the source cell determines the target cell for handover and has completed handover preparation, including handover request, target cell approval of terminal access, handover request confirmation, etc. Therefore, the network equipment of the source cell sends a handover instruction to the terminal so that the terminal can perform subsequent cell handover.

[0098] 302. The terminal receives the switching instruction and performs time-division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell.

[0099] After receiving the handover instruction, the terminal needs to switch between the source cell and the target cell. The network composed of the target cell and the source cell has the following scenarios:

[0100] As described above, before DAPS switching is completed, the terminal needs to simultaneously transmit uplink and downlink services with both the source and target cells, where the services include data or signaling. The network composed of the target and source cells has the following scenarios: intra-band co-frequency, intra-band inter-frequency (a), i.e. continuous carrier aggregation (CCA), intra-band inter-frequency (b), i.e. non-continuous carrier aggregation (NCCA), and inter-band inter-frequency.

[0101] Specifically, see Figure 3B , Figure 3B A schematic diagram of a network scenario consisting of a target cell and a source cell provided in an embodiment of the present application is shown in FIG. Figure 3B As shown in (1), in the intra-band co-frequency scenario, the synchronization signal frequencies and subcarrier spacing (SCS) of the two cells are the same, and the centers of the channel bandwidths coincide; Figure 3B As shown in (2), in the intra-band frequency difference (a) scenario, the synchronization signals of the two cells have different frequencies or SCSs, and the centers of the channel bandwidths do not overlap. The channel bandwidths of the two cells are continuous, that is, the two cells are CCA, and the intra-band spectrum does not overlap; as shown in Figure 3B As shown in (3), in the intra-band frequency difference (b) scenario, the synchronization signals of the two cells have different frequencies or SCSs, and the centers of the channel bandwidths do not overlap. The channel bandwidths of the two cells are discontinuous, that is, the two cells are NCCA, and the intra-band spectrum does not overlap; as shown in Figure 3B As shown in (4) in the inter-band frequency scenario, the channel bandwidths of the two cells are not within the same frequency band and the spectrum does not overlap. In addition, there is also an intra-band spectrum overlap scenario, such as Figure 3BAs shown in (5), in the intra-band heterogeneous frequency (c) scenario, the synchronization signals of the two cells have different frequencies or SCSs, and the centers of the channel bandwidths do not overlap, so the spectrum of the channel bandwidths of the two cells overlaps. In the intra-band co-frequency scenario, the synchronization signals of the two cells have the same frequencies and SCSs, but because the synchronization signals are not necessarily at the center of the channel bandwidth, the spectrum of the channel bandwidths of the two cells overlaps.

[0102] When the terminal has the capability of two transmission channels (transmit, Tx, abbreviated as T), for intra-band same-frequency, intra-band different-frequency (a), and intra-band partial overlap scenarios, the terminal can send the data and signaling of the source cell and the target cell through two transmission channels, which can be sent in parallel or in time division; for intra-band different-frequency (b) and inter-band different-frequency scenarios, the terminal can send the data and signaling of the source cell and the target cell respectively through one transmission channel each.

[0103] When the terminal has one transmission channel (1T) capability, for intra-band same-frequency, intra-band different-frequency (a), and intra-band partial overlap scenarios, one transmission channel can be used to send data and signaling for the source cell and target cell; for intra-band different-frequency (b) and inter-band different-frequency scenarios, the terminal cannot support 0ms switching.

[0104] When the terminal's receive channel (Rx) is limited, the channel resource allocation method in the network scenario consisting of the target cell and the source cell when DAPS handover occurs is the same as the transmission channel resource allocation method, and will not be repeated here. If the terminal's receive channel (Rx) is not limited, the remaining channel resources are allocated to the target cell.

[0105] Currently, the 3GPP standard only allows the RRC connection reconfiguration message to include the configuration parameters of one primary serving cell (PCell), and does not allow it to include the configuration parameters of two primary serving cells at the same time. If the receiving or transmitting capabilities of the terminal device in the source cell during the DAPS handover process are different from the receiving or transmitting capabilities of the terminal device in the source cell before the DAPS handover, then before the source cell sends the DAPS handover command to the terminal device, it needs to first send an RRC connection reconfiguration message containing the configuration parameters of the source cell to the terminal device, and then send a DAPS handover command containing the configuration parameters of the target cell. Among them, the DAPS handover command is included in the RRC connection reconfiguration message.

[0106] According to the above description, if the terminal has 2T and / or 2R capabilities, if the source cell transmits data at 2T and / or 2R, in the intra-band heterodyne (b) and inter-band heterodyne scenarios, the network device first needs to reduce the transmission channel with the source cell to 1T and / or 1R through the RRC connection reconfiguration message, and then the network device can issue a DAPS switching command. After the DAPS switching is completed, the network device needs to reconfigure the transmission channel of the target cell to 2T through the RRC connection reconfiguration message again. This process has a large air interface signaling overhead and causes a large switching delay. In addition, reconfiguring the sending channel of the source cell and the target cell from 2T to 1T will affect the uplink data throughput of the source cell and the target cell; reconfiguring the receiving channel of the source cell and the target cell from 2R to 1R will affect the downlink data throughput of the source cell and the target cell. If the terminal has 1T and / or 1R capabilities, and the communication between the terminal and the source cell and the target cell requires different sending channels and / or receiving channels, the terminal will not be able to implement DAPS switching, resulting in the unavailability of the DAPS switching function.

[0107] In an embodiment of the present application, it is proposed to solve the above problem by using a time-division multiplexing (TDM) method including a first time interval. That is, when the terminal needs to perform data and / or signaling interaction with the source cell (first data operation) and needs to perform data and / or signaling interaction with the target cell (second data operation), the terminal performs them in different time periods. The source cell and the target cell time-division multiplex the same channel resources, and complete the modification of configuration parameters related to the channel resources and the stabilization of various channel devices within the first time interval. In this way, before and after the DAPS switching is completed, it is possible to avoid having to reduce the maximum sending and / or receiving capacity of the source cell due to the need to transfer the channel resources of the cell to the target cell for use; and in the case where the terminal only has 1T or 1R capability, for the scenario where the source cell and the target cell each require 1T or 1R communication, DAPS switching of the source cell and the target cell can also be achieved.

[0108] Optionally, time division switching of the terminal (time division switching between the first data operation and the second data operation according to the first time interval) is instructed by the network device. The network device can indicate the time division switching between the original cell and the target cell through high-layer configuration and scheduling of the terminal's channel and reference signal (RS), without adding additional overhead of downlink control information (DCI) and medium access control (MAC) control elements (CE).

[0109] In the case of TDM handover between the first data operation between the terminal and the source cell and the second data operation between the terminal and the target cell, since the configuration parameters of the transmission channels of the source and target cells are different, such as the operating frequency, channel bandwidth, and RF calibration parameters of the frequency band, these parameters are used to adapt various components of the transmission channels. These components require a certain amount of time (for example, the local oscillator requires 130us to 140us) to reach a stable operating state and output a stable signal. Therefore, when the terminal performs TDM handover between the source and target cells, a TDM handover gap needs to be set.

[0110] Similarly, the first time interval can be configured by the network device. The network device can configure the first time interval by dynamic reservation, or by periodicity or fixed pattern. Figure 3C , Figure 3C A schematic diagram of configuring a first time interval provided in an embodiment of the present application is shown as follows: Figure 3C As shown in (a), the network device configures the first time interval (gap1) for the time division switching between the first data operation and the second data operation. The network dynamically schedules the terminal to send (or receive) data through MACCE or DCI. At this time, the first time interval is also dynamically reserved. This can help to flexibly control the time division switching of the terminal. Or as Figure 3C As shown in (b) of FIG, the network device periodically configures the first time interval according to a period T, and the network device only schedules data and / or signaling at time domain locations other than the first time interval. Alternatively, the network device may configure the first time interval according to a fixed pattern, such as a bitmap. For example, the bitmap is 000110, where a bit value of 1 configures the first time interval, and a bit value of 0 does not configure the first time interval.

[0111] The symbols occupied by the first time interval can be determined based on the terminal's capabilities, taking into account the subcarrier spacing corresponding to the symbol length. The terminal's capabilities include at least one of the following information: the second time interval determined by the terminal, the maximum transmit or receive capability of the first data operation, and the maximum transmit or receive capability of the second data operation. The second time interval can be determined by the terminal based on the following parameters: RF analog channel resources for receiving and transmitting data, baseband digital channel resources, baseband processing resources, and storage space for RF calibration parameters. The maximum transmission or reception capability of the first data operation may include the maximum (max) multiple-in multiple-out (MIMO) layers (layer) of the uplink physical shared channel (PUSCH) for communication between the terminal and the source cell, the maximum number of transmission ports (ports) of the channel sounding reference signal (SRS), the maximum number of MIMO layers of the downlink physical shared channel (PDSCH), etc.; the maximum transmission or reception capability of the second data operation includes the PUSCH max MIMO layer, SRS max port, PDSCH max MIMO layer, etc. for communication between the terminal and the target cell. These parameters can be reported to the base station in combination with whether the terminal performs time-division switching between the first data operation and the second data operation. The absence of the first time interval indicates non-time division, otherwise it indicates time division.

[0112] The network device may receive the terminal capabilities sent by the terminal and determine the first time interval based on the terminal capabilities. For example, after receiving the second time interval, the network device may directly use the second time interval as the first time interval in the time division switching, or may set the first time interval to have a greater number of OFDM symbols than the second time interval.

[0113] Alternatively, the network device determines the first time interval based on the maximum sending or receiving capability of the first data operation and the maximum sending or receiving capability of the second data operation.

[0114] If the terminal has only 2T capability, the reported terminal capability is: original cell PUSCH max MIMO layer = 2 or SRS port = 2, target cell PUSCH max MIMO layer = 2 or SRS port = 2, and the network device determines the first time interval = 140 us.

[0115] If the terminal has only 2T capability, the reported terminal capability is: original cell PUSCH max MIMO layer = 2 or SRS port = 2, target cell PUSCH max MIMO layer = 1 or SRS port = 1, and the network device determines the first time interval = 35 or 140 us.

[0116] If the terminal has only 2T capability, the reported terminal capability is: original cell PUSCH max MIMO layer = 1 or SRS port = 1, target cell PUSCH max MIMO layer = 2 or SRS port = 2, and the network device determines the first time interval = 35 or 140 us.

[0117] If the terminal has only 2T capability, the reported terminal capability is: original cell PUSCH max MIMO layer = 1 or SRS port = 1, target cell PUSCH max MIMO layer = 1 or SRS port = 1, and the network device determines the first time interval = 0 us.

[0118] If the terminal has only 1T capability, the reported terminal capability is: PUSCH max MIMO layer = 1 or SRS port = 1 in the original cell, PUSCH max MIMO layer = 1 or SRS port = 1 in the target cell, and the network device determines that the first time interval is equal to 140us. DAPS switching is supported.

[0119] If the terminal has 3T capability, the reported terminal capability is: original cell PUSCH max MIMO layer = 2 or SRS port = 2, target cell PUSCH max MIMO layer = 1 or SRS port = 1, and the network device determines the first time interval = 0 us.

[0120] The above “=” means “is”, “is” or “equivalent to”, and “T” represents the number of sending channel resources, which will not be repeated here.

[0121] The above description describes a scenario where the first time interval is determined based on the maximum transmission capability of the terminal. Similarly, for downlink transmission between the terminal and the network device, if the terminal's receiving channel resources are limited, the first time interval can also be determined based on the terminal's capabilities to perform time-division switching of downlink reception between the source cell and the target cell. If the terminal's receiving channel is not limited, the terminal can use different receiving channels to receive downlink data or signaling sent by the source cell and the target cell, achieving seamless time-division switching or parallel reception of the first data operation and the second data operation.

[0122] In the above description, if the first time interval does not exist, then when the terminal performs the first data operation and the second data operation, time division multiplexing is not required, that is, parallel reception and / or transmission is supported.

[0123] If the first time interval is 0 us, that is, when the terminal performs time division switching between the first data operation and the second data operation, no time interval is required. This situation may be that the number of channels of the terminal is greater than the total number of channels occupied by the source cell and the target cell. Specifically, assume that the number of uplink channels and / or downlink channels of the terminal is N, the number of uplink channels and / or downlink channels for the terminal to communicate with the source cell is M1, and the number of uplink channels and / or downlink channels for the terminal to communicate with the target cell is M2. When M1 + M2 < N, the terminal can perform the first data operation and the second data operation through different channels, realizing seamless time division switching between the first data operation and the second data operation.

[0124] If the terminal has two phase-locked loops (PLL0 and PLL1), which respectively provide local oscillator signals for the mixer. Assume that when performing the first data operation, the first PLL operates; when performing the second data operation, the second PLL operates. Before the terminal performs the first data operation and switches from the first data operation to the second data operation, the terminal supports starting the second PLL in advance. The first PLL and the second PLL do not affect each other, and the time for starting in advance is at least greater than 105 us from the stop of the first data operation. The second PLL can operate stably after 140 us. At this time, the terminal switches the first data operation to the second data operation. In this implementation, the first time interval can be 35 us.

[0125] Assume that the terminal has only one PLL, or has two but does not support the pre-start of a certain PLL. Then the first time interval can be 140 us. Because the time required for a PLL to stabilize is 130 us to 140 us. In this implementation, it can be ensured that within the first time interval, the terminal multiplexes the same channel resources to switch the first data operation to the second data operation. If the storage space of the terminal, such as the storage space for radio frequency calibration parameters, is limited, then when the first data operation is switched to the second data operation and the same channel resources are multiplexed, the terminal also needs to load radio frequency calibration parameters within the first time interval. Signaling interaction and loading radio frequency calibration parameters, etc., require additional time. Therefore, the first time interval can also be set to 200 us, 210 us or 300 us, or other larger values.

[0126] In addition, the first time interval does not include the downlink system timing offset, uplink system timing offset, and timing advance (TA) of the source cell and the target cell. When the source cell and the target cell perform time division handover, in addition to considering the first time interval, additional values ​​such as the downlink system timing offset, uplink system timing offset, and / or TA must be reserved.

[0127] It can be seen that in an embodiment of the present application, the network device instructs the terminal to perform time-division switching between the first data operation and the second data operation according to the first time interval. The first data operation is the data and / or signaling interaction between the terminal and the source cell, and the second data operation is the data and / or signaling interaction between the terminal and the target cell. This process can avoid the terminal being unable to support DAPS switching in certain heterofrequency scenarios when the receiving channel resources and / or sending access resources are limited, or the maximum sending and / or receiving capacity of the source cell must be reduced because the channel resources of the cell need to be transferred to the target cell for use, thereby expanding the application scope of DAPS switching and improving the DAPS switching efficiency and performance benefits. In addition, by instructing the terminal to perform time-division switching through the network device, the network device can perform reasonable service scheduling according to the overall communication situation, reducing the probability of data loss or other channel conflicts during communication.

[0128] Optionally, the network device includes a first network device and a second network device, wherein the source cell belongs to the first network device and the target cell belongs to the second network device, and the first network device and the second network device exchange terminal capabilities to determine a first time interval. Specifically, the first network device communicates with the terminal through the source cell, and the second network device communicates with the terminal through the target cell. In order to enable the first data operation and the second data operation to be time-division switched according to the first time interval, the two network devices need to perform data and / or signaling scheduling of the terminal according to a common first time interval. After the first network device receives the terminal capabilities, it sends them to the second network device, so that the network devices determine the first time interval based on the terminal capabilities.

[0129] Optionally, the time division switching is determined by the terminal. Specifically, when there may be a channel conflict between the first data operation and the second data operation, the terminal may determine a first time interval based on its own terminal capabilities, and then perform time division switching between the first data operation and the second data operation according to the first time interval.

[0130] As can be seen from the above description, terminal capabilities may include at least one of the following: a second time interval, a maximum send or receive capability for a first data operation, and a maximum send or receive capability for a second data operation. The second time interval is determined based on the following parameters: RF analog channel resources for receiving and sending data, baseband digital channel resources, baseband processing resources, storage space for RF calibration parameters, and the like. The terminal may directly use the second time interval as the first time interval, or may determine another first time interval based on the second time interval. The process of determining the first time interval based on the maximum send or receive capability for the first data operation and the maximum send or receive capability for the second data operation is the same as described above and will not be repeated here.

[0131] Furthermore, because the first time interval is determined by the terminal and not notified to the network device, the network device does not reserve the first time interval when invoking the terminal's data and / or signaling. Consequently, the terminal may discard the data and / or signaling within the first time interval, causing the first data operation and the second data operation to be switched in time division according to the first time interval.

[0132] In this case, because the terminal needs to switch from the source cell to the target cell, primarily to communicate with the target cell, the first time interval may be set on the first data operation rather than the second data operation, and the signal discarded by the terminal during the first time interval is the data and / or signaling corresponding to the first data operation. Alternatively, the terminal may determine the first time interval based on the processing priority of the channels and / or reference signals of the first and second data operations. For example, if the second data operation is to send an SRS, which has a low processing priority, the first time interval may be set on the second data operation to reduce the impact of discarded data and / or signaling during the first time interval on the communication process.

[0133] It can be seen that in an embodiment of the present application, the terminal itself decides to perform time-division switching between the first data operation and the second data operation according to the first time interval. The first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell. This process can avoid the terminal being unable to support DAPS switching in certain heterofrequency scenarios when the receiving channel resources and / or sending access resources are limited, or because the channel resources of the cell must be transferred to the target cell for use, resulting in the need to reduce the maximum sending and / or receiving capacity of the source cell, thereby expanding the application scope of DAPS switching and improving DAPS switching efficiency and performance benefits. In addition, the terminal itself decides to perform time-division switching, which can reduce the signaling overhead of the network equipment for time-division switching configuration and improve communication efficiency.

[0134] During the uplink transmission process of the source cell and the target cell, time division switching is performed according to the first time interval. The transmission of the physical random access channel (PRACH) preamble sequence, the UE channel state information (CSI) calculation time, and the SRS and PUSCH preparation process time will introduce processing time relaxation due to the switching gap.

[0135] During the downlink reception process between the source cell and the target cell, time division switching is performed according to the first time interval. The channel-state information reference signal (CSI-RS), tracking reference signal (TRS), PDSCH preparation process time, hybrid automatic repeat request (HARQ) acknowledgment character (ACK) feedback time, etc. will introduce processing time relaxation due to the switching gap.

[0136] In some cases, the network equipment is coupled with the uplink and downlink channels of the terminal. For details, see Figure 3D , Figure 3D A communication diagram of an uplink channel and a downlink channel coupled with each other is provided in an embodiment of the present application, such as Figure 3D As shown, the terminal performs time-division switching of uplink data transmission between the source cell and the target cell according to gap1. At the same time, if the receiving channel is coupled with the transmitting channel, then during gap1, at least starting from time t1, downlink data reception will introduce a transmission interruption (interruption), and gap1 and the transmission interruption will fully or partially overlap. Otherwise, if the receiving channel is not coupled with the transmitting channel, then during gap1, at least starting from time t1, downlink data can be received normally. Therefore, in this case, gap1 can be configured at the time domain location where the downlink symbols are located, reducing the impact of the time-division switching in the first time interval on uplink transmission.

[0137] Similarly, the terminal performs time-division handover of downlink data transmission between the source cell and the target cell according to the first time interval. At the same time, if the transmit channel is coupled with the receive channel, then at least during the gap 1 period starting at time t1, uplink data transmission will introduce a transmission interruption, and the gap 1 and the transmission interruption will fully or partially overlap. Otherwise, if the transmit channel is not coupled with the receive channel, then at least during the gap 1 period starting at time t1, uplink data can be sent normally. Therefore, in this case, gap 1 can be configured at the time domain location of the uplink symbols, reducing the impact of the time-division handover in the first time interval on downlink reception.

[0138] In an optional case, the network device is also used to obtain the parallel capability of the first data operation and the second data operation from the terminal, and instruct the terminal to perform time division switching or parallel operation based on the parallel capability and the terminal capability of time division switching, where the parallel operation is the parallel execution of the first data operation and the second data operation.

[0139] 303. The network device determines that the terminal is connected to the target cell, and sends a command to the terminal to release the source cell;

[0140] 304. The terminal receives a command sent by the network device to release the source cell, and stops the time division switching.

[0141] During the DAPS switching process, the terminal initiates access to the target cell. If the access is successful, the target cell sends a command to the terminal to release the source cell. The terminal stops executing time division switching according to the command and only executes the second data operation with the target cell, while releasing the connection with the source cell.

[0142] Alternatively, during the DAPS handover process, the terminal initiates an access request to the target cell. If the access fails, the terminal can release the access to the target cell and stop performing the time division handover. In addition, the terminal can continue the second data operation with the source cell or perform other data operations.

[0143] It can be seen that in an embodiment of the present application, the terminal performs time-division switching between the first data operation and the second data operation according to the first time interval, the first data operation is the data and / or signaling interaction between the terminal and the source cell, and the second data operation is the data and / or signaling interaction between the terminal and the target cell. This process can avoid the terminal being unable to support DAPS switching in certain heterogeneous frequency scenarios when the receiving channel resources and / or sending access resources are limited, or because the channel resources of the cell must be transferred to the target cell for use, resulting in the need to reduce the maximum sending and / or receiving capacity of the source cell, thereby expanding the application scope of DAPS switching and improving DAPS switching efficiency and performance benefits.

[0144] In one possible implementation, the handover command sent by the network device to the terminal may include the configuration parameters of the source cell and the target cell. In the aforementioned embodiment, it is mentioned that when the terminal has 2T and / or 2R capabilities and the terminal communicates with the source cell through 2T and / or 2R, in the process of implementing DAPS handover, the network device first needs to reduce the communication channel with the source cell to 1T through a reconfiguration message, and then send the configuration parameters of the target cell through a handover command. After the DAPS handover is completed, the network device again reconfigures the communication channel of the target cell to 2T through a reconfiguration message. The air interface signaling overhead of this process is very large. Assuming that the handover command includes the configuration parameters of the source cell and the target cell, then when DAPS switches, the communication channel of the source cell is reduced to 1T and the channel of the target cell is configured as 1T through the configuration parameters in the handover command. There is no need to send an RRC message to the terminal before the handover command to reconfigure the parameters of the source cell, thereby reducing the signaling overhead.

[0145] This embodiment of the present application also provides another cell switching method, which includes:

[0146] The terminal receives a handover command sent by a network device, where the handover command is used to instruct the terminal to switch from being connected to a source cell to being connected to a target cell;

[0147] The terminal performs time-division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell.

[0148] In an optional embodiment, the method includes: the terminal receives a command sent by the network device to release the source cell, and stops the time division switching.

[0149] In an optional embodiment, the first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell; or the first data operation is that the terminal sends data and / or signaling to the source cell, and the second data operation is that the terminal sends data and / or signaling to the target cell.

[0150] In an optional embodiment, the method further includes:

[0151] The terminal receives a message L, wherein the message L includes: a configuration of a first time interval, wherein the configuration of the first time interval includes at least one of the following: a dynamic configuration of the first time interval, a periodic configuration of the first time interval, and a fixed pattern configuration of the first time interval;

[0152] The terminal determines the configuration of the first time interval according to the message L and performs time division switching.

[0153] In an optional embodiment, the time division switching is determined by the terminal.

[0154] In an optional embodiment, the time division switching is determined by the terminal, including: the terminal determining a first time interval according to the terminal capability and performing the time division switching.

[0155] In an optional embodiment, the time division switching is determined by the terminal, including: the terminal determines the first time interval according to the message M sent by the network device, and performs the time division switching.

[0156] In an optional embodiment, the time division switching is determined by the terminal, including: the terminal sending a message P to the network device, where the message P includes the first time interval.

[0157] In an optional embodiment, the terminal capability includes at least one of the following: an indication of allowing time division switching, an indication of not allowing time division switching, a first time interval, a second time interval, the maximum sending capability of the first data operation, the maximum sending capability of the second data operation, the maximum receiving capability of the first data operation, the maximum receiving capability of the second data operation, the interruption time of the transmitting channel TX caused by the switching of the receiving channel RX, the interruption time of the RX interruption caused by the TX switching, an indication of allowing uplink and downlink transmission interruption within the first time interval, an indication of allowing uplink and downlink transmission interruption within the second time interval, and the first time interval is on the source cell.

[0158] In an optional embodiment, the terminal performs time-division switching between the first data operation and the second data operation according to a first time interval, including: the terminal performs time-division switching on the target cell link according to the first time interval, switching to the source cell link, or the terminal performs time-division switching on the source cell link according to the first time interval, switching to the target cell link.

[0159] In an optional embodiment, the first time interval is placed on the link of the source cell; or, the first time interval is placed on the link of the target cell; or, the first time interval is placed on the carrier where the source cell is located; or, the first time interval is placed on the carrier where the target cell is located.

[0160] In an optional embodiment, the first time interval is located on a lower priority data operation between the first data operation and the second data operation.

[0161] In an optional embodiment, the terminal determines the priority based on the processing priority of the channels of the first data operation and the second data operation; or, the terminal determines the priority based on the processing priority of the reference signals of the first data operation and the second data operation.

[0162] In an optional embodiment, the first time interval includes any one of the following:

[0163] The time required for the terminal to switch from using 2TX when communicating with the carrier of the source cell to using 1TX when communicating with the carrier of the target cell; or

[0164] The time required for the terminal to switch from using 1TX in carrier communication in the source cell to using 2TX in carrier communication in the target cell; or

[0165] The time required for the terminal to switch from using 2TX when communicating with the carrier of the source cell to using 2TX when communicating with the carrier of the target cell; or

[0166] The time required for the terminal to switch from using 1TX in carrier communication in the source cell to using 1TX in carrier communication in the target cell; or

[0167] The time required for the terminal to switch from using 2RX when communicating with the carrier of the source cell to using 1RX when communicating with the carrier of the target cell; or

[0168] The time required for the terminal to switch from using 1RX when communicating with the carrier of the source cell to using 2RX when communicating with the carrier of the target cell; or

[0169] The time required for the terminal to switch from using 2RX when communicating with the carrier of the source cell to using 2RX when communicating with the carrier of the target cell; or

[0170] The terminal uses 1RX when communicating with the source cell carrier, and switches to using 1RX when communicating with the target cell carrier, and the time required for this switch.

[0171] In an optional embodiment, the first time interval is located on the first data operation.

[0172] In an optional embodiment, the terminal discards data and / or signaling in the first time interval.

[0173] In an optional embodiment, the number of uplink channels and / or downlink channels of the terminal is N, the number of uplink channels and / or downlink channels for communication between the terminal and the source cell is M1, and the number of uplink channels and / or downlink channels for communication between the terminal and the target cell is M2.

[0174] When M1+M2≤N, the first time interval is 0us;

[0175] Or, when M1+M2>N, the first time interval is greater than 0 us.

[0176] In an optional embodiment, the first time interval is 0 us, 35 us, 140 us, 200 us, 210 us or 300 us.

[0177] In an optional embodiment, the method further includes: when the first data operation is that the terminal receives information sent by the source cell, and the second data operation is that the terminal receives information sent by the target cell, the terminal interrupts sending information to the source cell within the first time interval, or the terminal interrupts sending information to the target cell within the first time interval; or,

[0178] When the first data operation is that the terminal sends information to the source cell and the second data operation is that the terminal sends information to the target cell, the terminal interrupts receiving the information sent by the source cell within the first time interval, or the terminal interrupts receiving the information sent by the target cell within the first time interval.

[0179] In an optional embodiment, the method further includes:

[0180] The terminal interrupts downlink communication within the first time interval; or,

[0181] The terminal interrupts uplink communication within the first time interval; or,

[0182] The first time interval is a time interval for the terminal to switch from sending information in the source cell to sending information in the target cell, and the terminal interrupts downlink communication within the first time interval; or

[0183] The first time interval is a time interval for the terminal to switch from receiving information in a source cell to receiving information in a target cell. The terminal interrupts uplink communication within the first time interval.

[0184] An embodiment of the present application further provides a communication device, which includes a processing module or a communication module, wherein the processing module is used to perform the processing operations in the above-mentioned cell switching method, and the communication module is used to perform the sending and receiving operations in the above-mentioned method.

[0185] The embodiment of the present application further provides a capability reporting method, characterized in that the method includes:

[0186] The terminal sends a message J to the network device, where the J message includes at least one of the following: an indication of allowing time division switching, an indication of not allowing time division switching, a first time interval, a second time interval, a maximum sending capability of the first data operation, the maximum sending capability of the second data operation, a maximum receiving capability of the first data operation, a maximum receiving capability of the second data operation, an interruption time of TX interruption caused by RX switching, an interruption time of RX interruption caused by TX switching, an indication of allowing uplink and downlink transmission interruption within the first time interval, an indication of allowing uplink and downlink transmission interruption within the second time interval, and the first time interval is located on the source cell.

[0187] The present application also provides an information receiving method, characterized in that the method includes:

[0188] The terminal receives a message J2 sent by the network device, where the message includes: an indication of allowing time division switching, an indication of not allowing time division switching, a first time interval, a second time interval, a maximum sending capability of the first data operation, a maximum sending capability of the second data operation, a maximum receiving capability of the first data operation, a maximum receiving capability of the second data operation, an interruption time of TX interruption caused by RX switching, an interruption time of RX interruption caused by TX switching, an indication of allowing uplink and downlink transmission interruption within the first time interval, an indication of allowing uplink and downlink transmission interruption within the second time interval, and the first time interval is located on a source cell.

[0189] The capability reporting method and / or information receiving method may also include the following possible embodiments:

[0190] In an optional embodiment, the method further includes:

[0191] The terminal receives a handover command sent by the network device, where the handover command is used to instruct the terminal to switch from a source cell to a target cell;

[0192] The terminal performs time-division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell.

[0193] In an optional embodiment, the method further includes:

[0194] The terminal receives a command sent by the network device to release the source cell, and stops the time division switching.

[0195] In an optional embodiment, the method further includes:

[0196] The terminal device receives a message L, wherein the message L includes: a configuration of a first time interval, wherein the configuration of the first time interval includes at least one of the following: a dynamic configuration of the first time interval, a periodic configuration of the first time interval, and a fixed pattern configuration of the first time interval;

[0197] The terminal determines a first time interval configuration according to the message L and performs time division switching.

[0198] In an optional embodiment, the terminal determines the first time interval according to terminal capabilities; or the terminal determines the first time interval according to a message M received from the network device.

[0199] In an optional embodiment, the terminal sends a message P to the network device, where the message P includes the first time interval.

[0200] In an optional embodiment, the terminal performs time-division switching between the first data operation and the second data operation according to a first time interval, including: the terminal performs time-division switching on the target cell link according to the first time interval, switching to the source cell link, or the terminal performs time-division switching on the source cell link according to the first time interval, switching to the target cell link.

[0201] In an optional embodiment, the first time interval is placed on the link of the source cell; or, the first time interval is placed on the link of the target cell; or, the first time interval is placed on the carrier where the source cell is located; or, the first time interval is placed on the carrier where the target cell is located.

[0202] In an optional embodiment, the first time interval is located on a lower priority data operation between the first data operation and the second data operation.

[0203] In an optional embodiment, the terminal determines the priority based on the processing priority of the channels of the first data operation and the second data operation; or, the terminal determines the priority based on the processing priority of the reference signals of the first data operation and the second data operation.

[0204] In an optional embodiment, the first time interval includes any one of the following:

[0205] The time required for the terminal to switch from using 2TX when communicating with the carrier of the source cell to using 1TX when communicating with the carrier of the target cell; or

[0206] The time required for the terminal to switch from using 1TX in carrier communication in the source cell to using 2TX in carrier communication in the target cell; or

[0207] The time required for the terminal to switch from using 2TX when communicating with the carrier of the source cell to using 2TX when communicating with the carrier of the target cell; or

[0208] The time required for the terminal to switch from using 1TX in carrier communication in the source cell to using 1TX in carrier communication in the target cell; or

[0209] The time required for the terminal to switch from using 2RX when communicating with the carrier of the source cell to using 1RX when communicating with the carrier of the target cell; or

[0210] The time required for the terminal to switch from using 1RX when communicating with the carrier of the source cell to using 2RX when communicating with the carrier of the target cell; or

[0211] The time required for the terminal to switch from using 2RX when communicating with the carrier of the source cell to using 2RX when communicating with the carrier of the target cell; or

[0212] The terminal uses 1RX when communicating with the source cell carrier, and switches to using 1RX when communicating with the target cell carrier, and the time required for this switch.

[0213] In an optional embodiment, the first time interval is located on the first data operation.

[0214] In an optional embodiment, the terminal discards data and / or signaling in the first time interval.

[0215] In an optional embodiment, the number of uplink channels and / or downlink channels of the terminal is N, the number of uplink channels and / or downlink channels for communication between the terminal and the source cell is M1, and the number of uplink channels and / or downlink channels for communication between the terminal and the target cell is M2.

[0216] When M1+M2≤N, the first time interval is 0us;

[0217] Or, when M1+M2>N, the first time interval is greater than 0 us.

[0218] In the above embodiments, TX is equivalent to the uplink channel, uplink channel resources, transmission, or uplink transmission; RX is equivalent to the downlink channel, downlink channel resources, reception, or downlink reception. Time division switching is equivalent to uplink transmission switching (uplink TX switching) or downlink reception switching (downlink RX switching), as well as transmission switching (TX switching) or reception switching (RX switching).

[0219] In addition, the specific implementation process of the terminal capability determination, the first time interval configuration, the first time interval, etc. involved in the above embodiment can refer to Figures 3A to 3D The relevant description will not be repeated here.

[0220] An embodiment of the present application also provides a communication device, which includes a processing module or a communication module, wherein the processing module is used to perform the processing operations in the above-mentioned capability reporting method, and the communication module is used to perform the sending and receiving operations in the above-mentioned capability reporting method.

[0221] An embodiment of the present application also provides a communication device, which includes a processing module or a communication module. The processing module is used to perform the processing operations in the above-mentioned information receiving method, and the communication module is used to perform the sending and receiving operations in the above-mentioned information receiving method.

[0222] The description of the subsequent hardware devices, structures or chips in the embodiments of this application is also applicable to the methods of the above embodiments.

[0223] Figure 4 A communication device 400 provided in an embodiment of the present application can be used to perform the above Figures 3A to 3D The cell switching method and specific embodiment applied to a terminal, the terminal can be a terminal device or a chip configured in the terminal device. The communication device includes a receiving module 401 and a processing module 402.

[0224] The receiving module 401 is configured to receive a handover command sent by a network device, where the handover command is used to instruct the terminal to switch from being connected to a source cell to being connected to a target cell;

[0225] The processing module 402 is configured to perform time division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell;

[0226] The receiving module 402 is further configured to receive a command sent by the network device to release the source cell and stop the time division handover.

[0227] Optionally, the time division switching is indicated by the network device through at least one of the following information: channel configuration information, channel scheduling information, reference signal configuration information, and reference signal scheduling information.

[0228] Optionally, the network device configures the first time interval in the time division switching in at least one of the following ways: dynamic configuration, periodic configuration, and configuration according to a fixed pattern.

[0229] Optionally, the time division switching is determined by the terminal.

[0230] Optionally, the first time interval is determined according to terminal capabilities, and the terminal capabilities include at least one of the following information: a second time interval determined by the terminal, a maximum sending or receiving capability of the first data operation, and a maximum sending or receiving capability of the second data operation.

[0231] Optionally, the apparatus further includes a sending module 403, configured to send the terminal capability to the network device; or the processing module 402 is further configured to determine the first time interval according to the terminal capability.

[0232] Optionally, the first time interval is located on a low-priority data operation between the first data operation and the second data operation, and the priority is determined according to processing priorities of channels and / or reference signals of the first data operation and the second data operation.

[0233] Optionally, the first time interval is located on the first data operation.

[0234] Optionally, the processing module 402 discards data and / or signaling within the first time interval.

[0235] Optionally, the number of uplink channels and / or downlink channels of the terminal is N, the number of uplink channels and / or downlink channels for communication between the terminal and the source cell is M1, and the number of uplink channels and / or downlink channels for communication between the terminal and the target cell is M2. When M1+M2≤N, the first time interval is 0us; when M1+M2>N, the first time interval is greater than 0us.

[0236] Optionally, the first time interval is 0us, 35us, 140us, 200us, 210us or 300us.

[0237] Optionally, when the first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell, the processing module 402 interrupts sending data and / or signaling to the source cell within the first time interval, and / or the terminal interrupts sending data and / or signaling to the target cell within the first time interval.

[0238] Optionally, when the first data operation is that the terminal sends data and / or signaling to the source cell, and the second data operation is that the terminal sends data and / or signaling to the target cell, the processing module 402 interrupts receiving the data and / or signaling sent by the source cell within the first time interval, and / or the terminal interrupts receiving the data and / or signaling sent by the target cell within the first time interval.

[0239] Optionally, the processing module 402 may be a chip, an encoder, an encoding circuit or other integrated circuits that can implement the method of the present application.

[0240] Optionally, the receiving module 401 and the sending module 403 may be interface circuits or transceivers. The receiving module 401 and the sending module 403 may be independent modules or integrated into a transceiver module (not shown), which may implement the functions of the receiving module 401 and the sending module 403 described above.

[0241] Since the specific methods and embodiments have been introduced above, the device 400 is used to execute the positioning signal processing method corresponding to the terminal. Therefore, the specific description of the method, especially the functions of the receiving module 401 and the processing module 402, can refer to the relevant parts of the corresponding embodiment and will not be repeated here.

[0242] Optionally, the apparatus 400 may further include a storage module (not shown in the figure), which may be used to store data and / or signaling. The storage module may be coupled to the processing module 402, or may be coupled to the receiving module 401 or the sending module 403. For example, the processing module 402 may be used to read the data and / or signaling in the storage module, so that the key acquisition method in the aforementioned method embodiment is executed.

[0243] Figure 5 Another communication device 500 provided in an embodiment of the present application can be used to perform the above Figures 3A to 3D The cell switching method and specific embodiment applied to a network device can be a network device or a chip configured in a network device. In one possible implementation, Figure 5 As shown, the communication device 500 includes a sending module 502 and a processing module 501 .

[0244] The processing module 501 is used to determine that the terminal will switch from connecting to a source cell to connecting to a target cell;

[0245] The sending module 502 is configured to instruct the terminal to perform time division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell;

[0246] The processing module 501 is configured to determine whether the terminal is connected to the target cell;

[0247] The sending module 502 is configured to send a command to release the source cell to the terminal.

[0248] Optionally, the first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell; or the first data operation is that the terminal sends data and / or signaling to the source cell, and the second data operation is that the terminal sends data and / or signaling to the target cell.

[0249] Optionally, the time division switching is indicated by the network device through at least one of the following information: channel configuration information, channel scheduling information, reference signal configuration information, and reference signal scheduling information.

[0250] Optionally, the network device configures the first time interval in the time division switching in at least one of the following ways: dynamic configuration, periodic configuration, and configuration according to a fixed pattern.

[0251] Optionally, the first time interval is determined according to terminal capabilities, and the terminal capabilities include at least one of the following information: a second time interval determined by the terminal, a maximum sending or receiving capability of the first data operation, and a maximum sending or receiving capability of the second data operation.

[0252] Optionally, the processing module 501 is further configured to: receive the terminal capability sent by the terminal, and determine the first time interval according to the terminal capability.

[0253] Optionally, the first time interval is 0us, 35us, 140us, 200us, 210us or 300us.

[0254] Optionally, the network device includes a first network device and a second network device, wherein the source cell belongs to the first network device, the target cell belongs to the second network device, and the first network device and the second network device exchange the terminal capabilities to determine the same first time interval; or the first network device and the second network device exchange the first time interval.

[0255] Optionally, the receiving module 503 is also used to obtain the parallel capability of the first data operation and the second data operation from the terminal, and instruct the terminal to perform the time-division switching or parallel operation based on the parallel capability and the terminal capability of the time-division switching, where the parallel operation is the parallel execution of the first data operation and the second data operation.

[0256] Optionally, the handover command includes configuration parameters of the source cell and the target cell.

[0257] Optionally, the processing module 501 may be a chip, an encoder, an encoding circuit or other integrated circuits that can implement the method of the present application.

[0258] Optionally, the receiving module 503 and the sending module 502 may be interface circuits or transceivers. The receiving module 503 and the sending module 502 may be independent modules or integrated into a transceiver module (not shown), which may implement the functions of the receiving module 503 and the sending module 502 described above.

[0259] Since the specific methods and embodiments have been introduced above, the device 500 is used to execute the positioning signal processing method corresponding to the positioning device. Therefore, the specific description of the method, especially the functions of the receiving module 503 and the sending module 502, can refer to the relevant parts of the corresponding embodiment and will not be repeated here.

[0260] Optionally, the apparatus 500 may further include a storage module (not shown in the figure), which may be used to store data and / or signaling. The storage module may be coupled to the processing module 501, or may be coupled to the receiving module 503 or the sending module 502. For example, the processing module 501 may be used to read data and / or signaling in the storage module, so that the key acquisition method in the aforementioned method embodiment is executed.

[0261] Figure 6 This is a schematic diagram of a communication device structure provided in an embodiment of the present application. The structure of the terminal or network device can refer to Figure 6 The communication device 600 may include an application subsystem, memory, massive storage, a baseband subsystem, a radio frequency integrated circuit (RFIC), a radio frequency front end (RFFE) device, and an antenna (ANT), which may be coupled via various interconnection buses or other connection methods.

[0262] Figure 6In the figure, ANT_1 represents the first antenna, ANT_N represents the Nth antenna, and N is a positive integer greater than 1. Tx represents the transmit path, Rx represents the receive path, and different numbers represent different paths. FBRx represents the feedback receive path, PRx represents the main receive path, and DRx represents the diversity receive path. HB represents high frequency, and LB represents low frequency, both of which refer to the relative high and low frequencies. BB represents baseband. It should be understood that Figure 6 The marks and components are for illustration purposes only and are only used as one possible implementation method. The embodiments of the present application also include other implementation methods.

[0263] Among them, the application subsystem can serve as the main control system or main computing system of the terminal, used to run the main operating system and application programs, manage the software and hardware resources of the entire terminal, and provide users with a user operation interface.

[0264] Figure 6 In the figure, RFFE devices and RFIC 1 (and optionally RFIC 2) can together form a RF subsystem. The RF subsystem can be further divided into an RF receive path and an RF transmit path. The RF receive path can receive RF signals through an antenna, process the RF signals (such as amplification, filtering and down-conversion) to obtain a baseband signal, and pass it to the baseband subsystem. The RF transmit path can receive baseband signals from the baseband subsystem, perform RF processing (such as up-conversion, amplification and filtering) on ​​the baseband signals to obtain RF signals, and finally radiate the RF signals into space through an antenna. Specifically, the RF subsystem may include electronic devices such as an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer, a local oscillator (LO), and a filter. These electronic devices can be integrated into one or more chips as needed. The antenna can sometimes also be considered as part of the RF subsystem.

[0265] The baseband subsystem can extract useful information or data bits from the baseband signal, or convert information or data bits into a baseband signal to be transmitted. These information or data bits can represent user data such as voice, text, video, or control information.

[0266] Furthermore, since RF signals are analog signals, the signals processed by the baseband subsystem are primarily digital signals, and the terminal also requires an analog-to-digital converter. Analog-to-digital converters include analog-to-digital converters (ADCs) that convert analog signals into digital signals, and digital-to-analog converters (DACs) that convert digital signals into analog signals. In the embodiments of the present application, the analog-to-digital converter can be located in either the baseband subsystem or the RF subsystem.

[0267] Memory can be divided into volatile memory and non-volatile memory (NVM). Volatile memory refers to memory that loses its stored data if the power supply is interrupted. Currently, volatile memory is mainly random access memory (RAM), including static random access memory (SRAM) and dynamic random access memory (DRAM). Non-volatile memory refers to memory that maintains its stored data even if the power supply is interrupted. Common non-volatile memories include read-only memory (ROM), optical disks, magnetic disks, and various memories based on flash memory technology. Generally speaking, volatile memory can be used for memory, and non-volatile memory, such as magnetic disks or flash memory, can be used for large-capacity storage.

[0268] In an embodiment of the present application, the baseband subsystem and the radio frequency subsystem together constitute a communication subsystem, which provides wireless communication functions for the terminal. Generally, the baseband subsystem is responsible for managing the software and hardware resources of the communication subsystem, and can configure the operating parameters of the radio frequency subsystem. One or more processing cores of the baseband subsystem can be integrated into one or more chips, which can be referred to as a baseband processing chip or a baseband chip. Similarly, an RFIC can be referred to as a radio frequency processing chip or a radio frequency chip. In addition, as technology evolves, the functional division of the radio frequency subsystem and the baseband subsystem in the communication subsystem can also be adjusted. For example, part of the functions of the radio frequency subsystem can be integrated into the baseband subsystem, or part of the functions of the baseband subsystem can be integrated into the radio frequency subsystem.

[0269] An embodiment of the present application provides a computer storage medium storing a computer program, wherein the computer program includes a method for executing the method corresponding to the terminal in the above embodiment.

[0270] An embodiment of the present application provides a computer storage medium storing a computer program, wherein the computer program includes a method for executing the method corresponding to the network device in the above embodiment.

[0271] An embodiment of the present application provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the method corresponding to the terminal in the above embodiment.

[0272] An embodiment of the present application provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the method corresponding to the network device in the above embodiment.

[0273] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0274] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0275] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0276] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0277] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0278] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0279] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0280] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A cell handover method, characterized in that: The method comprises: The terminal receives a handover command sent by a network device, where the handover command is used to instruct the terminal to switch from being connected to a source cell to being connected to a target cell; The terminal performs time division switching between a first data operation and a second data operation at a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell, and the first time interval is located on a lower-priority data operation between the first data operation and the second data operation; or the first time interval is located on the first data operation; The terminal receives a command sent by the network device to release the source cell, and stops the time division switching.

2. The method according to claim 1, characterized in that The first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell; or the first data operation is to send data and / or signaling to the source cell, and the second data operation is to send data and / or signaling to the target cell.

3. The method according to claim 1 or 2, characterized in that The time division switching is indicated by the network device through at least one of the following information: channel configuration information, channel scheduling information, reference signal configuration information, and reference signal scheduling information.

4. The method according to claim 3, characterized in that The network device configures the first time interval in the time division switching in at least one of the following ways: dynamic configuration, periodic configuration, and configuration according to a fixed pattern.

5. The method according to claim 1 or 2, characterized in that The time division switching is determined by the terminal.

6. The method according to claim 5, characterized in that The time division switching is determined by the terminal, including: the terminal determining a first time interval according to the terminal capability and performing the time division switching.

7. The method according to claim 5, characterized in that The time division switching is determined by the terminal, including: the terminal determining the first time interval according to the message M sent by the network device, and performing the time division switching.

8. The method according to claim 5, characterized in that The time division switching is determined by the terminal, including: the terminal sending a message P to the network device, where the message P includes the first time interval.

9. The method according to claim 6, characterized in that The terminal capabilities include at least one of the following: an indication of allowing time division switching, an indication of not allowing time division switching, a first time interval, a second time interval, the maximum sending capability of the first data operation, the maximum sending capability of the second data operation, the maximum receiving capability of the first data operation, the maximum receiving capability of the second data operation, the interruption time of the sending channel TX caused by the switching of the receiving channel RX, the interruption time of the RX interruption caused by the TX switching, an indication of allowing uplink and downlink transmission interruption in the first time interval, an indication of allowing uplink and downlink transmission interruption in the second time interval, and the first time interval is on the source cell.

10. The method according to claim 1, characterized in that The terminal performs time division switching between the first data operation and the second data operation according to the first time interval, including: the terminal performs time division switching on the target cell link according to the first time interval, switching to the source cell link, or the terminal performs time division switching on the source cell link according to the first time interval, switching to the target cell link.

11. The method according to claim 1 or 10, characterized in that The first time interval is placed on the link of the source cell; or, the first time interval is placed on the link of the target cell; or, the first time interval is placed on the carrier where the source cell is located; or, the first time interval is placed on the carrier where the target cell is located.

12. The method according to claim 1, characterized in that The first time interval includes any one of the following: The time required for the terminal to switch from using 2TX when communicating on the source cell carrier to using 1TX when communicating on the target cell carrier; or, The time required for the terminal to switch from using 1TX in the source cell carrier communication to using 2TX in the target cell carrier communication; or, The time required for the terminal to switch from using 2TX when communicating with the carrier of the source cell to using 2TX when communicating with the carrier of the target cell; or, The time required for the terminal to switch from using 1TX when communicating with the carrier of the source cell to using 1TX when communicating with the carrier of the target cell; or, The time required for the terminal to switch from using 2RX when communicating with the carrier of the source cell to using 1RX when communicating with the carrier of the target cell; or The time required for the terminal to switch from using 1RX when communicating on the source cell carrier to using 2RX when communicating on the target cell carrier; or, The time required for the terminal to switch from using 2RX when communicating with the carrier of the source cell to using 2RX when communicating with the carrier of the target cell; or, The terminal uses 1RX when communicating with the source cell carrier, and switches to using 1RX when communicating with the target cell carrier, and the time required for this switch.

13. The method according to claim 1, wherein The priority is determined according to a processing priority of a channel and / or a reference signal of the first data operation and the second data operation.

14. The method according to claim 1, wherein The number of uplink channels and / or downlink channels of the terminal is N, the number of uplink channels and / or downlink channels for communication between the terminal and the source cell is M1, and the number of uplink channels and / or downlink channels for communication between the terminal and the target cell is M2. When M1+M2≤N, the first time interval is 0us; when M1+M2>N, the first time interval is greater than 0us.

15. The method according to claim 1 or 14, characterized in that The first time interval is 0us, 35us, 140us, 200us, 210us or 300us.

16. The method according to claim 2, characterized in that When the first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell, the terminal interrupts sending data and / or signaling to the source cell within the first time interval, and / or the terminal interrupts sending data and / or signaling to the target cell within the first time interval.

17. The method according to claim 2, characterized in that When the first data operation is that the terminal sends data and / or signaling to the source cell, and the second data operation is that the terminal sends data and / or signaling to the target cell, the terminal interrupts receiving the data and / or signaling sent by the source cell within the first time interval, and / or the terminal interrupts receiving the data and / or signaling sent by the target cell within the first time interval.

18. The method according to claim 2, characterized in that Also includes: When the first data operation is for the terminal to receive information sent by the source cell, and the second data operation is for the terminal to receive information sent by the target cell, the terminal interrupts sending information to the source cell within the first time interval, or the terminal interrupts sending information to the target cell within the first time interval; or, When the first data operation is that the terminal sends information to the source cell and the second data operation is that the terminal sends information to the target cell, the terminal interrupts receiving the information sent by the source cell within the first time interval, or the terminal interrupts receiving the information sent by the target cell within the first time interval.

19. The method according to claim 1, wherein The terminal discards the data and / or signaling in the first time interval.

20. The method according to claim 1, wherein Also includes: The terminal interrupts downlink communication within the first time interval; or, The terminal interrupts uplink communication within the first time interval; or, The first time interval is a time interval for the terminal to switch from sending information in the source cell to sending information in the target cell, and the terminal interrupts downlink communication within the first time interval; or The first time interval is a time interval for the terminal to switch from receiving information in a source cell to receiving information in a target cell. The terminal interrupts uplink communication within the first time interval.

21. A cell switching method, characterized in that: The method comprises: The network device determines that the terminal will switch from being connected to the source cell to being connected to the target cell; The network device instructs the terminal to perform a first operation, where the first operation is time-division switching between a first data operation and a second data operation at a first time interval, the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell, and the first time interval is located on a lower-priority data operation between the first data operation and the second data operation; or the first time interval is located on the first data operation; The network device determines that the terminal is connected to the target cell, and sends a command to the terminal to release the source cell.

22. The method according to claim 21, characterized in that The first data operation is that the terminal receives data and / or signaling sent by the source cell, and the second data operation is that the terminal receives data and / or signaling sent by the target cell; or the first data operation is to send data and / or signaling to the source cell, and the second data operation is to send data and / or signaling to the target cell.

23. The method according to claim 21 or 22, characterized in that The time division switching is indicated by the network device through at least one of the following information: channel configuration information, channel scheduling information, reference signal configuration information, and reference signal scheduling information.

24. The method according to claim 21, characterized in that The network device configures the first time interval in the time division switching in at least one of the following ways: dynamic configuration, periodic configuration, and configuration according to a fixed pattern.

25. The method according to claim 21, characterized in that The first time interval is determined according to terminal capabilities, and the terminal capabilities include at least one of the following information: a second time interval determined by the terminal, a maximum sending or receiving capability of the first data operation, and a maximum sending or receiving capability of the second data operation.

26. The method according to claim 25, characterized in that The network device receives the terminal capability sent by the terminal, and determines the first time interval according to the terminal capability.

27. The method according to claim 21, characterized in that The first time interval is 0us, 35us, 140us, 200us, 210us or 300us.

28. The method according to claim 21, wherein The network device includes a first network device and a second network device, wherein the source cell belongs to the first network device, the target cell belongs to the second network device, and the first network device and the second network device exchange the terminal capabilities to determine the first time interval.

29. The method according to claim 21, wherein The network device is also used to obtain the parallel capability of the first data operation and the second data operation from the terminal, and instruct the terminal to perform the time division switching or parallel operation based on the parallel capability and the terminal capability of the time division switching, where the parallel operation is the parallel execution of the first data operation and the second data operation.

30. The method according to claim 21, wherein The handover command includes configuration parameters of the source cell and / or the target cell.

31. A communication device, characterized in that: The communication device includes a receiving module and a processing module, wherein: The receiving module is configured to receive a handover command sent by a network device, wherein the handover command is configured to instruct the terminal to switch from being connected to a source cell to being connected to a target cell; the processing module being configured to perform time-division switching between a first data operation and a second data operation according to a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell, and the first time interval is located on a lower-priority data operation between the first and second data operations; or the first time interval is located on the first data operation; The receiving module is further configured to receive a command sent by the network device to release the source cell and stop the time division switching.

32. A communication device, characterized in that: The communication device includes a processing module and a sending module, wherein: The processing module is used to determine that the terminal will switch from connecting to the source cell to connecting to the target cell; the sending module being configured to instruct the terminal to perform time division switching between a first data operation and a second data operation according to a first time interval, where the first data operation is data and / or signaling interaction between the terminal and the source cell, and the second data operation is data and / or signaling interaction between the terminal and the target cell, and the first time interval is located on a lower-priority data operation between the first data operation and the second data operation; or the first time interval is located on the first data operation; The processing module is configured to determine whether the terminal is connected to the target cell; The sending module is further configured to send a command to release the source cell to the terminal.

33. A communication device, characterized in that: The communication device includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to execute the method according to any one of claims 1 to 20, or run the code instructions to execute the method according to any one of claims 21 to 30.

34. A communication device, characterized in that: The communication device includes a processor, a transceiver, a memory, and computer-executable instructions stored in the memory and executable on the processor. When the computer-executable instructions are executed, the communication device executes the method according to any one of claims 1 to 20, or executes the method according to any one of claims 21 to 30.

35. A computer-readable storage medium, characterized in that The computer storage medium stores computer-readable instructions, which, when executed on a communication device, cause the communication device to execute the method described in any one of claims 1 to 20, or cause the communication device to execute the method described in any one of claims 21 to 30.

36. A communication system, characterized in that: Comprising the communication device according to claim 33 and / or the communication device according to claim 34.

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