CN115412984A - Communication device, cell switching method and computer readable storage medium - Google Patents

Abstract

The present application provides a communication device, a cell handover method, and a computer-readable storage medium. The communication device includes a radio frequency module and a baseband module, wherein the radio frequency module and the baseband module are used to receive instructions indicating that the communication device is handed over from a source cell to a target cell. The target message of the cell, and is used to perform data transmission with the source cell and the target cell before the communication device switches to the target cell, the data includes synchronization data for the communication device to synchronize with the target cell and the synchronization data between the communication device and the source cell The user plane data between them; the baseband module is also used to switch to the target cell after synchronizing with the target cell according to the synchronization data. The above-mentioned communication device can reduce the duration of interruption of user plane data during cell handover.

Description

A communication device, a cell handover method, and a computer-readable storage medium

technical field

The present application relates to the technical field of mobility management, and in particular to a communication device, a cell handover method, and a computer-readable storage medium.

Background technique

With the continuous advancement of communication technology, business and application requirements are gradually diversified, which also puts forward higher requirements for communication networks and terminals, for example, requiring lower communication delays between terminals and base stations.

As an example, in the fifth generation mobile communication technology (5th generation mobile communication technology, 5G), when the terminal performs cell handover, the interruption duration of the user plane data between the terminal and the cell may be greater than 60ms, which is the user can Perceived data interruption, affecting user experience.

Therefore, how to reduce the interruption duration of user plane data during the cell handover process is an urgent technical problem to be solved at present.

Contents of the invention

The present application provides a communication device, a cell handover method, and a computer-readable storage medium, which are used to reduce the interruption duration of user plane data during the cell handover process.

In a first aspect, a communication device is provided, the communication device includes a radio frequency module and a baseband module, wherein the radio frequency module and the baseband module are used to receive a target message, and the target message is used to instruct the communication device to be The source cell is handed over to the target cell; and, before the communication device is handed over to the target cell, data transmission is performed with the source cell and the target cell respectively, and the data includes information for the communication device and the target cell. Synchronization data for synchronization of the target cell and user plane data between the communication device and the source cell; the baseband module is further configured to switch to the target cell after synchronizing with the target cell according to the synchronization data the target area.

In the above technical solution, the radio frequency module and the baseband module of the communication device can realize that after the communication device receives the target message, it can not only synchronize with the target cell, but also perform user plane data transmission with the source cell. Before the communication device completes synchronization with the target cell, the communication device may not interrupt the user plane data transmission with the source cell, then the interruption period of the user plane data of the communication device only includes the time for executing the handover command, thereby reducing the user time during the cell handover process. Interruption duration of surface data.

In a second aspect, a cell handover method is provided, which is applied to a communication device, and the method includes: the communication device receives a target message for instructing the communication device to switch from a source cell to a target cell, and in the communication device Before handing over to the target cell, the communication device performs data transmission with the source cell and the target cell respectively, and the data includes synchronization data for the communication device to synchronize with the target cell and the User plane data between the communication device and the source cell; the communication device is handed over to the target cell after synchronizing with the target cell according to the synchronization data.

In a third aspect, a communication device is provided, and the communication device includes a processor, the processor is coupled to a memory, and can be used to execute instructions in the memory, so as to implement the method of the second aspect above. Optionally, the communication device further includes a transceiver, and the processor is coupled to the transceiver, wherein:

The transceiver is configured to receive a target message, and the target message is used to instruct the communication device to switch from a source cell to a target cell; and is used to communicate with the communication device before switching to the target cell performing data transmission between the source cell and the target cell, where the data includes synchronization data for the communication device to synchronize with the target cell and user plane data between the terminal and the source cell;

The processor is configured to switch to the target cell after synchronizing with the target cell according to the synchronization data.

In a fourth aspect, a communication device is provided, including a processor and a memory. The processor is used to read instructions stored in the memory to execute the method in the second aspect above.

In the fifth aspect, a chip is provided. The chip includes a processor and a memory. The processor can be a logic circuit, an integrated circuit, or a general-purpose processor. Instructions are stored in the memory, and the processor can read To implement the method in the second aspect above, the software code stored in the memory may be integrated into the processor, or may be located outside the processor and exist independently.

According to a sixth aspect, a computer program product is provided, and the computer program product includes: a computer program or also referred to as code or instruction, and when the computer program is executed, the computer executes the method in the above-mentioned second aspect.

In a seventh aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program or may also be referred to as a code or an instruction. When it is run on a computer, it causes the computer to execute the above-mentioned second aspect. method.

Description of drawings

FIG. 1 is a schematic diagram of an example of cell handover performed by a terminal provided in an embodiment of the present application;

FIG. 2 is a flowchart of an example of cell handover in a 5G network provided by an embodiment of the present application;

FIG. 3 is a block diagram of user plane data interruption analysis for cell handover in a 5G network provided by an embodiment of the present application;

FIG. 4A is a schematic structural diagram of an example of a communication device provided by an embodiment of the present application;

FIG. 4B is a schematic structural diagram of another example of a communication device provided by an embodiment of the present application;

FIG. 5 is a logical block diagram of an example of a communication device provided in an embodiment of the present application;

FIG. 6 is a structural block diagram of an example of a communication device 600 provided in an embodiment of the present application;

FIG. 7 is a structural block diagram of a first architecture of a communication device 600 provided in an embodiment of the present application;

FIG. 8 is a structural block diagram of an example of a radio frequency module 601 and a baseband module 602 provided by an embodiment of the present application;

FIG. 9 is a structural block diagram of a second architecture of a communication device 600 provided in an embodiment of the present application;

FIG. 10 is a structural block diagram of another example of a radio frequency module 601 and a baseband module 602 provided by an embodiment of the present application;

FIG. 11 is a structural block diagram of a third architecture of a communication device 600 provided in an embodiment of the present application;

Fig. 12 is a structural block diagram of another example of a radio frequency module 601 and a baseband module 602 provided by the embodiment of the present application;

FIG. 13 is a structural block diagram of a fourth architecture of a communication device 600 provided in an embodiment of the present application;

Fig. 14 is a structural block diagram of an example of the radio frequency module 601, the digital front-end control sub-module 6024 and the physical layer transceiver sub-module 6025 provided by the embodiment of the present application;

FIG. 15 is a flow chart of a cell handover method provided by an embodiment of the present application;

Fig. 16 is a schematic structural diagram of another example of a communication device provided by an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. For example, the first instruction and the second instruction are for distinguishing different user instructions, and their sequence is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference.

It should be noted that, in this application, words such as "exemplarily" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a concrete manner.

In addition, "at least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (one) of a, b and c may represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, wherein a, b, c can be single or multiple.

With the continuous advancement of communication technology, 5G network has gradually become popular. Due to the diversification of business and application requirements, users have higher requirements for 5G networks, for example, lower latency of 5G networks. As an example, cell handover by a terminal is one of scenarios in which time delay is generated in a 5G network. Please refer to FIG. 1 , which is a schematic diagram of an example of cell handover performed by a terminal. As shown in Figure 1, during the process of moving from position a to position b, the terminal will send a measurement report to base station X of cell 1. When the base station determines that the terminal meets the handover conditions according to the measurement report and the handover strategy, it will trigger the terminal to perform cell Handover, for example, handover the terminal from cell 1 to cell 2 of base station Y.

Please refer to FIG. 2 , which is a flow chart of an example of cell handover in a 5G network. It can be seen from FIG. 2 that when the terminal receives the radio resource control (radio resource control, RRC) reconfiguration message in step 7, it will interrupt the user plane data transmission with the source cell, so as to perform cell handover according to the RRC reconfiguration message. The transmission of user plane data cannot be resumed until step 14 is completed, that is to say, the time period between the terminal starting from step 7 and the end of step 14 is the interruption time of user plane data during cell handover.

From the analysis of the steps in the above flow chart, it can be obtained that the steps affecting the interruption duration of user plane data in the above cell handover process mainly include terminal reconfiguration, downlink synchronization and uplink synchronization, as shown in FIG. 3 . In a 5G network, in order to improve spectrum utilization efficiency, the transmission frequency of common resources of the cell will be reduced, for example, the transmission frequency of the synchronization signal block (SSB) will be reduced. When the terminal performs downlink synchronization for initial access, usually It takes 20ms, which is the step of obtaining the first SSB in Figure 3. As a result, in the 5G network, the time required for the terminal to perform downlink synchronization and uplink synchronization is relatively long, as shown in Figure 3, which is longer than 40ms. The longer the time required for the terminal to perform downlink synchronization and uplink synchronization, the longer the user plane data interruption time when the terminal is switching between cells.

In view of this, the embodiment of the present application provides a communication device and a cell handover method, the communication device includes a radio frequency module and a baseband module, wherein, when the radio frequency module and the baseband module receive After receiving the target message, the communication device can perform data transmission with the source cell and the target cell before switching to the target cell through the radio frequency module and the baseband module, for example, through the radio frequency module and the baseband module, communicate with the target cell Transmission of synchronization data for synchronization between the communication device and the target cell, and transmission of user plane data between the communication device and the source cell with the source cell through the radio frequency module and the baseband module; after the baseband module obtains the synchronization data, it After the synchronization data is synchronized with the target cell, handover to the target cell.

In the above technical solution, the radio frequency module and the baseband module of the communication device can realize that after the communication device receives the target message, it can not only synchronize with the target cell, but also perform user plane data transmission with the source cell. Before the communication device completes the synchronization with the target cell, the communication device may not interrupt the user plane data transmission with the source cell, then the interruption duration of the user plane data of the communication device only includes the duration of executing the handover command, that is, the communication device performs downlink synchronization And the uplink synchronization does not affect the interruption of the user plane data, so that the interruption duration of the user plane data during the cell handover process can be reduced.

In the following, the communication device and the cell handover method provided by the embodiments of the present application will be described in detail with reference to the accompanying drawings.

Please refer to FIG. 4A , which is a schematic structural diagram of an example of a communication device provided in an embodiment of the present application. The communication device shown in FIG. 4A includes a radio frequency device 401 and a baseband device 402 .

The radio frequency device 401 may include any one or any combination of a radio frequency chip circuit, a radio frequency front end, or an antenna, or may be a combination of a radio frequency chip circuit, a radio frequency front end, and an antenna to form a complete radio frequency system. The radio frequency chip circuit is mainly used to realize the frequency mixing operation of the radio frequency signal, such as up-conversion for signal transmission or down-conversion for signal reception. The radio frequency chip circuit may be one or more integrated circuits, for example, a radio frequency integrated circuit (radio frequency integrated circuit, RFIC). The radio frequency chip circuit may also include amplifiers, transformers, digital-to-analog converters, analog-to-digital converters, etc., which are not limited in this embodiment of the present application. The RF front-end may include RF amplifiers, such as power amplifiers or low-noise amplifiers, and various filters, such as duplexers, band-pass filters, band-stop filters, high-pass filters, or low-pass filters. The antenna can be used as a part of the RF front end or as an independent component, and the transmission and reception of signals are transmitted in the form of radio frequency through the antenna.

The baseband device 402 may include one or more of a baseband chip, a channel encoder, a modem, and a communication interface, for modulating a digital signal to be transmitted onto a carrier to obtain a baseband signal for sending, and sending the baseband signal To the radio frequency device 401, transmit in the form of radio frequency through the antenna of the radio frequency device 401; or decode and demodulate the baseband signal received from the radio frequency device 401, and then separate the digital signal from the baseband signal. Wherein, the baseband chip may be a baseband chip based on an advanced reduced instruction set processor (advanced RISC machines, ARM) architecture, or may be a system-on-a-chip (SOC) integrated with a baseband processing function, which will not be described here. limit. The communication interface may include a radio frequency control interface, an input/output interface, etc., which will not be described here one by one.

The communication device also includes a power module 480 for supplying power to various components. Optionally, the power module 480 can be logically connected to the processor 410 through a power management device, so as to implement functions such as charging, discharging, and power consumption management through the power management device.

Although not shown, the communication device may also include a power module for supplying power to the communication device, or may also include a memory for storing data required by the radio frequency device 401 and the baseband device 402, and of course, may also include other components, This embodiment of the present application does not limit it.

Please refer to FIG. 4B , which is a schematic structural diagram of another example of a communication device provided in an embodiment of the present application. The communication device shown in FIG. 4 includes a processor 410 , a memory 420 , a transceiver 430 , a display unit 440 , an input unit 450 , a sensor 460 , an audio circuit 470 , and a power supply module 480 and other components.

The processor 410 is the control center of the communication device, and uses various interfaces and lines to connect various parts of the entire communication device, by running or executing software programs and/or modules stored in the memory 420, and calling data stored in the memory 420 , to execute various functions of the communication device and process data, so as to monitor the communication device as a whole. Optionally, the processor 410 may include one or more processing units; optionally, the processor 410 may integrate an application processor, and the application processor mainly processes operating devices, user interfaces, application programs, etc., and of course, may also include other Processors are not listed here.

The memory 420 can be used to store software programs and modules, and the processor 410 executes various functional applications and data processing of the communication device by running the software programs and modules stored in the memory 420 . The memory 420 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating device, at least one function required application program (such as a sound playback function, an image playback function, etc.) etc.; Data created using the communication device (such as audio data, phonebook, etc.) and the like. In addition, the memory 420 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The transceiver 430 can provide wireless local area networks (wireless local area networks, WLAN) (such as wireless fidelity (Wi-Fi) network), bluetooth (bluetooth, BT), global navigation satellite system (global navigation satellite system) applied on the communication device. Navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The transceiver 430 may be one or more devices integrating at least one communication processing module, for example, the antenna and the baseband processor are integrated into the transceiver 430, or the antenna and the modem processor are integrated into the transceiver 430, etc., which are not described here. limit.

The display unit 440 may be used to display information input by or provided to the user and various menus of the communication device. The display unit 440 may include a display panel 441. Optionally, the display panel 441 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD) or an organic light-emitting diode (Organic Light-Emitting Diode, OLED). Further, the touch panel 451 may cover the display panel 441. When the touch panel 451 detects a touch operation on or near it, it transmits to the processor 410 to determine the type of the touch event, and then the processor 410 determines the type of the touch event according to the The type provides a corresponding visual output on the display panel 441 . Although in FIG. 4, the touch panel 451 and the display panel 441 are used as two independent components to realize the input and input functions of the communication device, in some embodiments, the touch panel 451 and the display panel 441 can be integrated. The input and output functions of the communication device are realized.

The input unit 450 may be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the communication device. Specifically, the input unit 450 may include a touch panel 451 and other input devices 452 . The touch panel 451, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 451 or near the touch panel 451). operation), and drive the corresponding connection device according to the preset program. In addition, the touch panel 451 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 451 , the input unit 450 may also include other input devices 452 . Specifically, other input devices 452 may include, but are not limited to, one or more of function keys (such as volume control keys, switch keys, etc.), trackballs, joysticks, and the like.

The communication device may also include at least one sensor 460, such as a gyro sensor, a motion sensor, and other sensors. Specifically, the gyro sensor can be used to determine the motion posture of the communication device, can be used for image stabilization, and can also be used for navigation and somatosensory game scenes. As a kind of motion sensor, the acceleration sensor can detect the magnitude of acceleration in various directions, and can detect the magnitude and direction of gravity when it is stationary, and can be used to identify the posture of electronic equipment, such as horizontal and vertical screen switching, related games, and magnetometer posture calibration etc. As for other sensors such as pressure gauges, barometers, hygrometers, thermometers, and infrared sensors that can also be configured by electronic equipment, details will not be repeated here.

Audio circuitry 470 may include a speaker 471 and a microphone 472, which may provide an audio interface between the user and the communication device. The audio circuit 470 can transmit the electrical signal converted from the received audio data to the loudspeaker 471, and the loudspeaker 471 converts it into a sound signal output; After being received, it is converted into audio data, and then the audio data is processed by the output processor 410, and then sent to another electronic device through a video circuit, or the audio data is output to the memory 420 for further processing.

The communication device also includes a power module 480 for supplying power to various components. Optionally, the power module 480 can be logically connected to the processor 410 through a power management device, so as to implement functions such as charging, discharging, and power consumption management through the power management device.

Although not shown, the communication device may also include a camera. Optionally, the position of the camera on the communication device may be front or rear, which is not limited in this embodiment of the present application.

In addition, the communication device involved in the embodiment of the present application may be installed with an operating system, and an application program may be installed and run on the operating system, which is not limited in the embodiment of the present application.

The communication device provided in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer, a notebook computer, a palmtop computer, a mobile internet device (mobile internet device, MID), a wearable device, a virtual reality (virtual reality, VR) device, Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid ), wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, personal digital assistant (PDA), etc. , which is not limited in this embodiment of the present application.

In addition, the communication device provided in the embodiment of the present application may use a communication network to communicate with network equipment, the network equipment may be a base station, the communication network may be a 5G network, or a long term evolution (long term evolution, LTE) network, and of course It may be a future-oriented communication network, which is not limited here.

It can be understood that, the structure shown in the embodiment of the present application does not constitute a specific limitation on the communication device. In some other embodiments of the present application, the communication device may include more or fewer components than shown in the figure, or combine certain components, or separate certain components, or arrange different components. The illustrated components can be realized in hardware, software or a combination of software and hardware.

FIG. 4A and FIG. 4B illustrate the communication device in the embodiment of the present application from the hardware structure, and the communication device in the embodiment of the present application will be introduced from the processing logic of data sending and receiving below.

Please refer to FIG. 5 , which is a logical block diagram of a communication device in an embodiment of the present application. As shown in FIG. 5 , the terminal includes a radio frequency layer 501 , a baseband layer 502 , and a protocol stack layer 503 .

The radio frequency layer 501 is used to receive wireless signals sent by network devices, and may include transceiver antennas, radio frequency chips, etc. In FIG. 5 , the radio frequency layer 501 includes 2 sending units and 4 receiving units as an example. The unit may be an independent transceiver antenna, or may also be a transceiver antenna integrating functions of one or more processing modules, for example, a transceiver antenna integrating functions of a radio frequency chip, which is not limited herein.

After acquiring the wireless signal from the radio frequency layer, the baseband layer 502 performs processing such as demodulation and decoding on the wireless signal, and sends the processed wireless signal to the protocol stack layer 503 . The terminal can support a multi-carrier (component carrier, CC) working mode, and the baseband layer 502 can include multiple carrier receiving units and multiple carrier transmitting units, which correspond to multiple CCs one by one. In FIG. 5, the terminal supports two Take two carrier units as an example, CC1 and CC2 respectively, CC1 includes 1 CC1 receiving unit and 1 CC1 sending unit, CC2 includes 1 CC2 receiving unit and 1 CC2 sending unit, each sending unit or receiving unit can be An independent transceiver module may also be a transceiver module integrated with functions of a baseband processing or a modem processor, which is not limited here.

It should be noted that the number of sending units and receiving units included in the radio frequency layer 501 and the baseband layer 502 in FIG. 5 is an example, for example, the radio frequency layer 501 may include 4 sending units and 8 receiving units, In 502, the number of sending units and receiving units corresponding to each carrier may be 2 or 3, etc., and the baseband layer 502 may also include sending units and receiving units corresponding to 4 carriers. The number is limited, and those skilled in the art can set it according to actual usage requirements.

After the protocol stack layer 503 obtains the processed wireless signal from the baseband layer 502, it obtains corresponding information from the processed wireless signal. The data content corresponding to the surface data; if the network device sends synchronous data, then the synchronous information corresponding to the synchronous data can be obtained through the protocol stack layer 503, which will not be described here. In terms of data processing logic, the protocol stack layer 503 may include a medium access control (medium access control, MAC) sublayer, a radio link control (radio link control, RLC)/packet data convergence protocol (packet data convergence protocol, PDCP) ) sublayer and a radio resource control (radio resource control, RRC) sublayer, after the MAC sublayer obtains the processed wireless signal from the baseband layer 502, after processing by the MAC sublayer, the RLC/PDCP sublayer and the RRC sublayer, The specific process of obtaining the information corresponding to the processed wireless signal is similar to the processing process in the related art, and will not be repeated here.

After the protocol stack layer 503 obtains the information corresponding to the processed wireless signal, it performs corresponding operations according to the information, for example, uplink synchronization and downlink synchronization of the cell can be performed, or the obtained information can also be sent to the protocol stack The upper layer of the layer, for example, the application layer, is not described here one by one.

The communication device and the cell handover method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 6 , which is a structural block diagram of an example of a communication device 600 provided in this application. As shown in FIG. 6, the terminal 600 includes a radio frequency module 601 and a baseband module 602, wherein:

The radio frequency module 601 and the baseband module 602 are configured to receive a target message, the target message is used to instruct the communication device 600 to switch from the source cell to the target cell; 602 performs data transmission with the source cell and the target cell respectively, for example, performs data transmission with the target cell through the radio frequency module 601 and the baseband module 602, and obtains synchronization data for synchronizing between the communication device 600 and the target cell; through the radio frequency module 601 and the baseband module 602 Perform data transmission with the source cell, and obtain user plane data between the communication device 600 and the source cell;

The baseband module 602 is configured to switch to the target cell after synchronizing with the target cell according to the synchronization data acquired through data transmission with the target cell.

It should be noted that the communication device 600 may be a terminal in the application scenario shown in FIG. 1 , may also be a communication device shown in FIG. Part of the device, such as a transceiver device, or may be the transceiver 430 in the communication device shown in Figure 4B, the communication device 600 may include the radio frequency layer 501, the baseband layer 502 and the protocol stack layer 503 shown in Figure 5, the communication device 600 is not limited to the above examples, and will not be described here one by one.

It can be seen from the above technical solution that after the communication device 600 receives the target message for switching cells, it can not only synchronize with the target cell, but also perform user plane data transmission with the source cell, so the interruption duration of the user plane data of the communication device 600 is It is not calculated from the time point when the terminal receives the target message of switching cells, but from the time point when the communication device 600 completes the handover preparation and starts to execute the switching command, that is to say, the time point when the communication device 600 actually switches the cell It is determined, that is, the calculation starts from the time point when the UE sends the RRC connection reconfiguration complete message in FIG. 2 , which can reduce the interruption duration of user plane data during the cell handover process.

It can be understood that the synchronization data in this embodiment of the present application includes downlink synchronization data and uplink synchronization data between the communication device 600 and the target cell, and the user plane data includes uplink user plane data and downlink user plane data between the communication device 600 and the source cell. data. For convenience of description, in the following, the synchronization data and user plane data are divided into downlink data and uplink data, the downlink data includes downlink synchronization data and downlink user plane data, and the uplink data includes uplink synchronization data and uplink user plane data.

It can be seen from the foregoing that the communication device 600 reduces the interruption duration of user plane data during the cell handover process, and needs to rely on the radio frequency module 601 and the baseband module 602 to keep communicating with the source cell after the communication device 600 receives the target message for handover. Data transmission, therefore, the radio frequency module 601 and the baseband module 602 will be described in detail below.

In order to enable the radio frequency module 601 and the baseband module 602 to realize the above functions, the embodiment of the present application provides four different architectures including but not limited to the following. In the following, the radio frequency module 601 and the baseband module 602 of these four architectures will be described respectively with reference to the accompanying drawings.

The first structure:

Please refer to FIG. 7 , which is a structural block diagram of the first architecture of the radio frequency module 601 and the baseband module 602 according to the embodiment of the present application. The radio frequency module 601 and the baseband module 602 will be described below for two scenarios of uplink data transmission and downlink data reception.

Downlink data receiving scenario:

A radio frequency module 601, configured to receive downlink data, and send the received downlink data to the baseband module 602;

The baseband module 602 is configured to decode the received downlink data to obtain synchronization information and/or data content corresponding to the downlink data.

Uplink data sending scenario:

The baseband module 602 is configured to acquire uplink data, and then send the first target uplink data to the radio frequency module 601, where the first target uplink data includes all or part of the received uplink data;

The radio frequency module 601 is configured to send the received first target uplink data.

It can be understood that, after receiving the downlink data, the radio frequency module 601 as shown in FIG. After the baseband module 602 acquires the uplink data, the baseband module 602 may not directly forward the acquired uplink data to the radio frequency module 601, but first determines the first target uplink data from the uplink data, and then sends the first target uplink data to The radio frequency module 601 sends the uplink data through the radio frequency module 601, so as to realize communication with the target cell or the source cell. For example, the source cell and the target cell share radio frequency resources. If the baseband module 602 receives the uplink synchronization data of the target cell and the uplink user plane data of the source cell at the same time, the baseband module 602 needs to determine from the two data that one of the data is in the current Send at all times, so that only one of the two data can be sent to the radio frequency module 601, that is, the baseband module 602 distinguishes the uplink data to realize the uplink data transmission.

In order to further illustrate the working principles of the radio frequency module 601 and the baseband module 602 , please refer to FIG. 8 , which is a structural block diagram of an example of the radio frequency module 601 and the baseband module 602 .

As shown in Figure 8, the radio frequency module 601 includes at least one first receiving unit 60111 and at least one first sending unit 60112, the baseband module 602 includes at least one first physical layer receiving unit 60211, at least one second physical layer receiving unit 60212, at least one first physical layer sending unit 60213, at least one second physical layer sending unit 60214 and a first priority decision unit 60215, wherein at least one first physical layer receiving unit 60211 and at least one first physical layer sending unit 60213 are respectively Corresponding to the target cell, at least one second physical layer receiving unit 60212 and at least one second physical layer sending unit 60214 are respectively corresponding to the source cell, and the first priority decision unit 60215 is respectively connected to at least one first physical layer sending unit 60213 and at least one A second physical layer sending unit 60214 is connected.

It should be noted that the number of each sending unit and receiving unit in FIG. 8 is just an example, and those skilled in the art can set the number of sending units and receiving units according to actual usage requirements, and there is no limitation here.

In the architecture shown in Figure 8, the downlink data is received by at least one first receiving unit 60111, and if the received downlink data is downlink synchronization data, the downlink synchronization data is sent to the at least one first physical layer receiving unit 60211 , if the received downlink data is downlink user plane data; then send the downlink user plane data to at least one second physical layer receiving unit 60212; if both downlink synchronization data and downlink user plane data are received, then send the downlink synchronization data to at least one first physical layer receiving unit 60211, and to send the downlink user plane data to at least one second physical layer receiving unit 60212, or at least one first receiving unit 60111 may also copy the received downlink data, and send the two The same downlink data is sent to at least one first physical layer receiving unit 60211 and at least one second physical layer receiving unit 60212 respectively. As an example, at least one first receiving unit 60111 may determine the received downlink data as downlink synchronization data or downlink user plane data according to the carrier frequency of the received downlink data. Of course, other methods may also be used to distinguish the downlink data as The downlink synchronous data or downlink user plane data is the same as that in the related art, and is not limited here.

After receiving the downlink synchronization data, at least one first physical layer receiving unit 60211 decodes the downlink synchronization data to obtain synchronization information corresponding to the downlink synchronization data; at least one second physical layer receiving unit 60212 receives the downlink user plane data , performing decoding processing on the downlink user plane data to obtain data content corresponding to the downlink user plane data, thereby completing the reception of the downlink data.

In the scenario of sending uplink data, if it is necessary to send uplink synchronization data to the target cell, at least one first physical layer sending unit 60213 acquires the uplink synchronization data, and sends the uplink synchronization data to the first priority decision unit 60215; if If it is necessary to send uplink user plane data to the source cell, at least one second physical layer sending unit 60214 obtains the uplink user plane data, and sends the uplink user plane data to the first priority decision unit 60215. Since the target cell and the source cell share For radio frequency resources, if the first priority decision unit 60215 receives uplink user plane data and uplink synchronization data at the same time, the first priority decision unit 60215 determines the uplink synchronization data and uplink user plane data according to the priorities of the source cell and the target cell. One of the data is sent to the corresponding sending unit in the radio frequency module 601 as the first target uplink data, for example, the first target uplink data is uplink synchronization data, then at least one first physical layer sending unit 60213 is controlled to send the uplink synchronization data to at least one first sending unit 60112; if the first target uplink data is uplink user plane data, control at least one second physical layer sending unit 60214 to send the uplink user plane data to at least one first sending unit 60112. Of course, if the terminal only needs to send one uplink data at the same time, when the first priority decision unit 60215 only obtains one uplink data, the first priority decision unit 60215 can directly control the corresponding physical layer without making a priority decision. The sending unit only needs to send the uplink data to the first sending unit.

After at least one first sending unit 60112 receives the first target uplink data, it sends the first target uplink data, completes sending the uplink data, and communicates with the target cell or the source cell.

It can be understood that the uplink data sent by the baseband module 602 to the radio frequency module 601 refers to the data processed by the baseband module 602 such as encoding, which is a routine operation in the baseband processing process, so in the embodiment of this application, For the convenience of reading, this part of the processing process is omitted, but it does not mean that there are no such processes in the actual processing process, and it is explained here.

In the architecture shown in Figure 8, the radio frequency module 601 distinguishes whether the received downlink data is the data of the source cell or the target cell, and then sends it to the corresponding receiving unit in the baseband module 602 for processing, and the baseband module 602 distinguishes and acquires Whether the uplink data is the data of the source cell or the target cell, and then send it to the radio frequency module 601 for transmission, so that the transmission process of the user plane data between the source cell and the source cell can be maintained during the cell handover process, and the interruption of the user plane data can be reduced duration.

In the above-mentioned first architecture, the baseband module 602 is used to avoid conflicts when sending uplink data, but in some cases, uplink data conflicts may not be avoided. In this case, the way of priority judgment may no longer be applicable , therefore, the embodiment of the present application proposes a second architecture.

The second architecture:

Please refer to FIG. 9 , which is a structural block diagram of the second architecture of the radio frequency module 601 and the baseband module 602 according to the embodiment of the present application. The radio frequency module 601 and the baseband module 602 will be described below for two scenarios of uplink data transmission and downlink data reception.

Downlink data receiving scenario:

A radio frequency module 601, configured to receive downlink data, and send the received downlink data to the baseband module 602;

The baseband module 602 is configured to decode the received downlink data to obtain synchronization information and/or data content corresponding to the downlink data.

Uplink data sending scenario:

The baseband module 602 is configured to acquire uplink data, and then send the acquired uplink data to the radio frequency module 601;

The radio frequency module 601 is configured to send received uplink data.

It should be noted that, in the architecture shown in FIG. 9 , in the radio frequency module 601 and the baseband module 602, the source cell and the target cell use different radio frequency resources, that is, the data transmission and reception of the source cell and the target cell are independent of each other. Interference, in this way, the data of the source cell and the target cell can be processed in parallel. In the downlink data receiving scenario, when the unit in the radio frequency module 601 and the source cell receive the downlink synchronization data, the downlink synchronization data is sent to the unit corresponding to the source cell in the baseband module 602 for processing to obtain data content; When the unit in the radio frequency module 601 corresponding to the target cell receives the downlink synchronization data, it sends the downlink synchronization data to the unit in the baseband module 602 corresponding to the target cell for processing to obtain synchronization information. In the uplink data transmission scenario, when the unit corresponding to the source cell in the baseband module 602 receives the uplink user plane data, it sends the uplink user plane data to the unit in the radio frequency module 601 corresponding to the source cell, and sends the uplink user plane data After the unit corresponding to the target cell in the baseband module 602 receives the uplink synchronization data, it sends the uplink synchronization data to the unit in the radio frequency module 601 corresponding to the target cell, and sends the uplink synchronization data.

Please refer to FIG. 10 , which is a structural block diagram of another example of a radio frequency module 601 and a baseband module 602 .

As shown in Figure 10, the radio frequency module 601 includes at least one third receiving unit 60121, at least one fourth receiving unit 60122, at least one fourth sending unit 60123 and at least one fifth sending unit 60124, and the baseband module 602 includes at least one fifth A physical layer receiving unit 60221, at least one sixth physical layer receiving unit 60222, at least one seventh physical layer sending unit 60223, and at least one eighth physical layer sending unit 60224, at least one third receiving unit 60121 and at least one fifth physical layer The receiving unit 60221 is connected, at least one fourth receiving unit 60122 is connected to at least one sixth physical layer receiving unit 60222, at least one fourth sending unit 60113 is connected to at least one seventh physical layer sending unit 60223, and at least one fifth sending unit 60124 Connect 60224 with at least one eighth physical layer sending unit.

In the downlink data receiving scenario, when at least one third receiving unit 60121 receives the downlink user plane data, it sends the downlink user plane data to at least one fifth physical layer receiving unit 60221, and through at least one fifth physical layer receiving unit 60221. Perform decoding processing on the downlink user plane data to obtain data content corresponding to the downlink user plane data of the source cell; when at least one fourth receiving unit 60122 receives the downlink synchronization data, send the downlink synchronization data to at least one The sixth physical layer receiving unit 60222 decodes the downlink synchronization signal through at least one sixth physical layer receiving unit 60222, so as to obtain the synchronization information of the target cell.

In the uplink data sending scenario, when at least one seventh physical layer sending unit 60223 obtains the uplink user plane data of the source cell, it performs encoding and other processing on the uplink user plane data, and sends the encoded uplink user plane data to at least one A fourth sending unit 60123 sends uplink user plane data through at least one fourth sending unit 60123 to communicate with the source cell; when at least one eighth physical layer sending unit 60224 obtains the uplink synchronization data of the target cell, then the uplink synchronization data Perform encoding and other processing, send the encoded uplink user plane data to at least one fifth sending unit 60124, and send uplink synchronization data through at least one fifth sending unit 60124, and communicate with the target cell.

In the second architecture, since the radio frequency resources used by the source cell and the target cell are different, conflicts during data transmission can be avoided and data reliability can be guaranteed.

In the above-mentioned first architecture, the baseband module distinguishes whether the uplink data is the data of the source cell or the data of the target cell, and the radio frequency module can also realize this function. Therefore, in the third architecture, the uplink data is distinguished by the radio frequency module Whether it is the data of the source cell or the data of the target cell.

Please refer to FIG. 11 , which is a structural block diagram of a third architecture of the radio frequency module 601 and the baseband module 602 according to the embodiment of the present application. The radio frequency module 601 and the baseband module 602 will be described below for two scenarios of uplink data transmission and downlink data reception.

Downlink data receiving scenario:

A radio frequency module 601, configured to receive downlink data, and send the received downlink data to the baseband module 602;

The baseband module 602 is configured to decode the received downlink data to obtain synchronization information and/or data content corresponding to the downlink data.

Uplink data sending scenario:

A baseband module 602, configured to acquire uplink data and send the uplink data to the radio frequency module 601;

The radio frequency module 601 is configured to send second target uplink data, where the second target uplink data is part or all of the uplink data.

In the architecture shown in FIG. 11 , in the scenario of receiving downlink data, the processing methods of the radio frequency module 601 and the baseband module 602 are similar to those of the radio frequency module 601 and the baseband module 602 in the first architecture, and will not be repeated here. In the uplink data transmission scenario, when the baseband module 602 acquires the uplink data, the baseband module 602 directly forwards the acquired uplink data to the radio frequency module 601, and the radio frequency module 601 determines to send all or part of the received uplink data , realizing communication with the target cell or the source cell. For example, the source cell and the target cell share radio frequency resources. If the radio module 601 receives the uplink synchronization data of the target cell and the uplink user plane data of the source cell at the same time, the radio module 601 needs to determine from the two data that one of the data is in the current Sending at all times, that is to say, the radio frequency module 601 distinguishes the uplink data to realize the sending of the uplink data.

In order to further illustrate the working principles of the radio frequency module 601 and the baseband module 602 , please refer to FIG. 12 , which is a structural block diagram of another example of the radio frequency module 601 and the baseband module 602 .

As shown in Figure 12, the radio frequency module 601 includes at least one first receiving unit 60111, at least one second sending unit 60132 and a second priority decision unit 60133, and the baseband module 602 includes at least one first physical layer receiving unit 60211, at least one The second physical layer receiving unit 60213, at least one third physical layer sending unit 60234 and at least one fourth physical layer sending unit 60235, at least one first physical layer receiving unit 60231 and at least one third physical layer sending unit 60234 and the target cell Correspondingly, at least one fourth physical layer sending unit 60235 and at least one second physical layer receiving unit 60213 correspond to the source cell.

In the architecture shown in Figure 12, in the scenario of receiving downlink data, the process of receiving downlink data through at least one first receiving unit 60111, at least one first physical layer receiving unit 60132 and at least one second physical layer receiving unit 60213 It is similar to the corresponding content in the architecture shown in FIG. 8 and will not be repeated here.

In the scenario of uplink data transmission, when at least one third physical layer sending unit 60234 receives the uplink synchronization data of the target cell, it sends the uplink synchronization data to the second priority decision unit 60133; when at least one fourth physical layer sends The unit 60235 sends the uplink user plane data to the second priority decision unit 60133 after receiving the uplink user plane data of the source cell. Since the target cell and the source cell share radio frequency resources, if the second priority decision unit 60133 receives uplink user plane data and uplink synchronization data at the same time, the second priority decision unit 60133 determines the One of the uplink synchronization data and the uplink user plane data is used as the second target uplink data, and the second target uplink data is sent through the sending unit in the radio frequency module 601, for example, if the second target uplink data is the uplink synchronization data, then the The uplink synchronization data is mapped to at least one second sending unit 60132, and the uplink synchronization data is sent through at least one second sending unit 60132; if the first target uplink data is uplink user plane data, the uplink user plane data is mapped to at least one second The sending unit 60132 is configured to send uplink user plane data through at least one second sending unit 60132 . The working mode of the second priority decision unit 60133 is similar to that of the first priority decision unit 60215 in FIG. 8 , which will not be repeated here.

After at least one second sending unit 60132 receives the second target uplink data, it sends the second target uplink data, completes sending the uplink data, and communicates with the target cell or the source cell.

In the above three architectures, the data transmission process needs to use the radio frequency module to distinguish the source of the uplink data or the downlink data. In another case, it is also possible not to use the radio frequency module to distinguish the source of the uplink data or the downlink data. Therefore, A fourth architecture is provided, and the fourth architecture will be described below with reference to the accompanying drawings.

Please refer to FIG. 13 , which is a structural block diagram of a fourth architecture of the radio frequency module 601 and the baseband module 602 according to the embodiment of the present application. Different from the previous three architectures, in the architecture shown in Figure 13, the baseband module 602 is split, including the digital front-end control sub-module 6024 and the physical layer transceiver sub-module 6025, and the digital front-end control sub-module 6024 is connected with the The radio frequency module 601 and the physical layer transceiver sub-module 6025 are connected. For the convenience of description, the radio frequency module 601, the digital front-end control sub-module 6024 and the physical layer transceiver sub-module 6025 will be described below for two scenarios of uplink data transmission and downlink data reception.

Downlink data receiving scenario:

The radio frequency module 601 is configured to receive downlink data, and send the received downlink data to the digital front-end control submodule 6024;

The digital front-end control submodule 6024 is used to receive downlink data from the radio frequency module 601, and send the received downlink data to the physical layer transceiver submodule 6025;

The physical layer transceiver sub-module 6025 is configured to receive downlink data from the digital front-end control module 601, and decode the downlink data to obtain synchronization information and/or data content.

Uplink data sending scenario:

The physical layer transceiver submodule 6025 is used to acquire uplink data, and send the acquired uplink data to the digital front-end control submodule 6024;

The digital front-end control submodule 6024 is configured to send the third target uplink data to the radio frequency module 601, where the third target uplink data includes all or part of the received uplink data;

A radio frequency module 601, configured to send third target uplink data.

It can be understood that, in the architecture shown in FIG. 13 , in the scenario of receiving downlink data, when the radio frequency module 601 receives the downlink data, it will directly forward the received downlink data to the digital front-end control sub-module 6024, which is controlled by The digital front-end control submodule 6024 sends the received downlink data to the physical layer transceiver submodule 6025, and the physical layer transceiver submodule 6025 performs subsequent processing on the received downlink data. In the uplink data sending scenario, when the physical layer transceiver sub-module 6025 acquires uplink data, it directly forwards the acquired data to the digital front-end control sub-module 6024, and the digital front-end control sub-module 6024 may not directly transmit the acquired uplink data. Forwarding to the radio frequency module 601, but first determine the third target uplink data from the uplink data, and then send the third target uplink data to the radio frequency module 601, and send the uplink data through the radio frequency module 601, so as to achieve communication with the target cell or the source cell communication. For example, the source cell and the target cell share radio frequency resources. If the digital front-end control submodule 6024 simultaneously receives the uplink synchronization data of the target cell and the uplink user plane data of the source cell sent by the physical layer transceiver submodule 6025, the digital front-end control submodule 6024 needs to determine from the two data that one of the data is sent at the current moment, so that only one of the two data is sent to the radio frequency module 601, that is, the digital front-end control sub-module 6024 distinguishes the uplink data , to realize the sending of uplink data.

In order to further illustrate the working principle of the radio frequency module 601, the digital front-end control sub-module 6024 and the physical layer transceiver sub-module 6025, please refer to FIG. Example block diagram.

As shown in Figure 14, the radio frequency module 601 includes at least one second receiving unit 60141 and at least one third sending unit 60142, and the digital front-end control sub-module 6024 includes at least one front-end receiving unit 60241, at least one front-end sending unit 60242 and the third priority Level decision unit 60243, the physical layer transceiver sub-module 6025 includes at least one third physical layer receiving unit 60251, at least one fourth physical layer receiving unit 60252, at least one fifth physical layer sending unit 60253 and at least one sixth physical layer sending unit 60254, at least one third physical layer receiving unit 60251 and at least one fifth physical layer sending unit 60253 respectively correspond to the target cell, at least one fourth physical layer receiving unit 60252 and at least one sixth physical layer sending unit 60254 respectively correspond to the source cell correspond.

In the architecture shown in Figure 14, the downlink data is received by at least one second receiving unit 60141, and the received downlink data is directly sent to at least one front-end receiving unit 60241 without any judgment, and at least one front-end receiving unit 60241 receives After receiving the downlink data, it is forwarded according to the difference of the downlink data. If the downlink data is downlink synchronous data, the downlink synchronous data is sent to at least one third physical layer receiving unit 60251. If the downlink data is downlink user plane data, the downlink synchronous data is sent to at least one third physical layer receiving unit 60251. The user plane data is sent to at least one fourth physical layer receiving unit 60252. At least one second receiving unit 60141 may also copy the received downlink data, and send two copies of the same downlink data to at least one third physical layer receiving unit 60251 and at least one fourth physical layer receiving unit 60252 respectively. The method for the at least one second receiving unit 60141 to distinguish downlink data is similar to that of the at least one first receiving unit 60111 in the architecture shown in FIG. 8 , and will not be repeated here.

After at least one third physical layer receiving unit 60251 receives the downlink synchronization signal, it decodes the downlink synchronization signal to obtain synchronization information corresponding to the downlink synchronization data; at least one fourth physical layer receiving unit 60252 receives the downlink user plane After receiving the data, the downlink user plane data is decoded to obtain the data content corresponding to the downlink user plane data.

In the scenario of sending uplink data, if it is necessary to send uplink synchronization data to the target cell, at least one fifth physical layer sending unit 60253 obtains the uplink synchronization data corresponding to the target cell, and sends the uplink synchronization data to the third priority decision Unit 60243; if it is necessary to send uplink user plane data to the source cell, at least one sixth physical layer sending unit 60254 acquires the uplink user plane data of the source cell, and sends the uplink user plane data to the third priority decision unit 60243; because The target cell and the source cell share radio frequency resources. If the third priority decision unit 60243 receives uplink user plane data and uplink synchronization data at the same time, the third priority decision unit 60243 determines the uplink One of the synchronization data and the uplink user plane data is used as the third target uplink data, and the third target uplink data is sent to at least one front-end sending unit 60242, for example, the third target uplink data is uplink synchronization data, then the uplink synchronization Send the data to at least one front-end sending unit 60242; if the third target uplink data is uplink user plane data, send the uplink user plane data to at least one front-end sending unit 60242. The working mode of the third priority decision unit 60243 is similar to that of the first priority decision unit 60215 in FIG. 8 , which will not be repeated here.

At least one front-end sending unit 60242 sends the third target uplink data to at least one third sending unit 60142 after receiving the third target uplink data;

After at least one third sending unit 60142 receives the third target uplink data, it sends the third target uplink data, completes sending the uplink data, and communicates with the target cell or the source cell.

It should be noted that, in FIG. 14, at least one second receiving unit 60141 and at least one front-end receiving unit 60241 have a one-to-one correspondence. In other cases, at least one second receiving unit 60141 and at least one front-end receiving unit 60241 also It can be a one-to-many or many-to-one relationship. For example, if the number of at least one second receiving unit 60141 is 4, and the number of at least one front-end receiving unit 60241 is 2, then 2 second receiving units 60141 correspond to 1 Front-end receiving unit 60241; or, the number of at least one second receiving unit 60141 is 2, and the number of at least one front-end receiving unit 60241 is 4, then one second receiving unit 60141 corresponds to two front-end receiving units 60241, of course It may be other corresponding relationships, which are not limited here.

In addition, it should be noted that, in order to support the communication between the terminal and the source cell in the above manner, that is, after the terminal receives the handover instruction, the communication between the terminal and the source cell can still be carried out. The cell reporting terminal has the ability to communicate in the above manner. In this embodiment of the present application, the terminal reports first information to the source cell through the communication module, and the first information is used to indicate the switching mode of the terminal, and the switching mode is a switching mode for communicating with the source cell before switching to the target cell. As an example, when reporting the UE capability parameter to the source cell, the terminal may include the first information in the UE capability parameter, so as to report the first information to the source cell; or, when reporting the measurement report, the terminal may, The first information is carried in the measurement report. Of course, the first information may also be reported in other processes before receiving the handover instruction, which is not limited in this embodiment of the present application.

In addition, the form of the first information may be in the form of adding a field or adding an indication message to the corresponding reporting information, and the specific form may be pre-agreed with the source cell, and is not limited in this embodiment of the application.

It should be understood that the above-mentioned various architectures may also be coupled to each other, for example, the module for receiving downlink data in the first architecture shown in FIG. 8 and the module for sending uplink data in the fourth architecture shown in FIG. 14 Modules are coupled to obtain a new architecture, and modules in other architectures can also be coupled, which will not be described one by one in this embodiment of the application, and will not be limited.

The structure of the terminal in the embodiment of the present application is described above. In the following, the terminal shown in FIG. 6-FIG. 14 is taken as an example to describe a cell handover method provided in the embodiment of the present application.

Please refer to FIG. 15 , which is a flowchart of a cell handover method provided by an embodiment of the present application. For the convenience of description, take this method applied in the scenario shown in Figure 1 as an example, where the terminal in Figure 1 can be the communication device shown in Figure 4A or Figure 4B, or it can also be the communication device shown in Figure 4A or Figure 4B Some of the communication devices shown in 4B are not limited here. As shown in Figure 15, the method includes:

S1501: The network device provides area restriction information;

S1502: The source base station sends a UE capability query request to the terminal, and the terminal receives the UE capability query request;

S1503: The terminal reports UE capability information to the source base station, and the source base station receives the UE capability information.

In this embodiment of the present application, the UE capability information includes target capability information, which is used to indicate that the terminal has the capability to communicate with the source cell before handing over to the target cell, for example, the target capability The information may indicate a handover mode of the terminal, and the handover mode is a handover mode for communicating with the source cell before handing over to the target cell. The specific form of the target capability message is not limited here.

It should be noted that steps S1502 to S1503 are optional steps, that is, they do not have to be executed. Indicated by a dotted line in FIG. 15 , for example, the base station and the terminal may agree on this communication mode in advance without requiring the indication process of the above steps S1502 to S1503 , which is not limited in this embodiment of the present application.

S1504: The source base station sends measurement control information to the terminal, and the terminal receives the measurement control information;

S1505: The terminal sends a measurement report to the source base station, and the source base station receives the measurement report;

It should be noted that, between step S1504 and step S1505, the terminal may interact with a user plane function (UPF) through the source base station, for example, send data, which may be called user plane data. Indicated by dashed lines in the figure.

It should be noted that, in the embodiment shown in FIG. 15 , the target capability information is carried in the UE capability information. In other embodiments, the target capability information can also be carried in the measurement report. Of course, it can also be carried separately A signaling is generated and sent by the terminal to the base station, which is not limited here.

In addition, it should be noted that the execution order of step S1501 and step S1502 to step S1503 may not be limited, for example, step S1501 may be before step S1502 to step S1503, and step S1501 may also be after step S1502 to step S1503, which is not limited here In FIG. 15 , step S1501 is taken as an example before step S1502 to step S1503 for illustration.

S1506: The source base station makes a handover decision according to the measurement report sent by the terminal;

S1507: The source base station sends a handover request to the target base station, and the target base station receives the handover request;

S1508: The target base station determines admission control according to the handover request;

S1509: The target base station sends a handover request response to the source base station, and the source base station receives the handover request response;

S1510: The source base station sends a switching instruction to the terminal, and the terminal receives the switching instruction;

In the embodiment of the present application, the handover instruction is used to instruct the terminal to handover from a source cell to a target cell, where the source cell is a cell in the source base station, and the target cell is a cell in the target base station. The handover instruction may be an RRC connection reconfiguration message, which is illustrated in FIG. 15 by taking the handover instruction as an RRC connection reconfiguration message as an example.

It should be noted that, in this embodiment of the application, before the terminal switches to the target cell, the terminal can still perform data transmission with the source cell, for example, to transmit user plane data between the terminal and the source cell, as shown in the figure by The dotted line after step S1510 indicates. That is to say, the moment when the terminal receives the handover instruction through step S1510 is not the moment when the user plane data transmission of the terminal is interrupted.

In addition, it should be noted that, in the example shown in FIG. 15 , the terminal performs handover according to a handover instruction issued by the source base station, that is, the handover instruction is the target message. In other scenarios, the terminal can also trigger handover by itself. For example, the terminal can actively send a handover request to the target base station or source base station, and then the target base station or source base station sends a handover request response message to the terminal, and the handover request response message indicates agreement. handover, and then the terminal executes the handover method in this application, that is, in this case, the handover request response message received by the terminal is the target message. Of course, in other scenarios, the target message may also be other specific messages, as long as the message can instruct the terminal to perform cell handover, the specific form and content are not limited here.

S1511: Air interface switching trigger;

S1512: The source base station sends an SN state transfer message to the target base station, and the target base station receives the SN state transfer message;

S1513: The terminal leaves the source cell and synchronizes to the new cell;

S1514: The source base station sends the data cached in the source cell to the target base station, and the target base station receives and caches the data;

S1515: The terminal sends a synchronization message to the target base station, and the target base station receives the synchronization message;

S1516: The target base station sends uplink configuration information to the terminal, and the terminal receives the uplink configuration information;

The uplink configuration information includes a timing advance (timing advance, TA), which guides the terminal to perform uplink synchronization.

S1517: The terminal sends a handover completion instruction to the target base station, and the target base station receives the handover completion instruction.

In this embodiment of the present application, the handover completion command may be an RRC connection reconfiguration complete message. In FIG. 15 , the handover completion command is an RRC connection reconfiguration complete message as an example for illustration. When the terminal sends a handover completion instruction, it indicates that the terminal has completed synchronization with the target cell, and thus is handed over to the target cell.

It should be noted that, before step S1517, the terminal can still perform data transmission with the source cell, which is represented by a dotted line between step S1516 and step S1517 in FIG. 15 . Moreover, between step S1510 and step S1517, the terminal also needs to perform data transmission with the target cell, for example, the transmission of synchronization data for synchronization between the terminal and the target cell includes uplink synchronization data and downlink synchronization data, and the uplink synchronization data may include the terminal and the target cell. The data when the target cell performs random access, and the downlink synchronization data may include a synchronization signal of the target cell, which are not listed here.

In this embodiment of the application, between step S1510 and step S1517, the terminal involves the process of performing data transmission to the source cell and the target cell respectively. In the embodiment of the application, the terminal performs data transmission to the source cell and the target cell respectively. Methods include but are not limited to the following four.

For the convenience of description, in the embodiment of this application, according to the transmission direction of the data, the synchronization data and the user plane data are divided into uplink data and downlink data, wherein the synchronization data includes the downlink synchronization data and the uplink synchronization data, and the user plane data includes the uplink data. User plane data and downlink user plane data.

The four data transmission methods will be described respectively below.

The first data transfer method:

The terminal includes a radio frequency module and a baseband module, and the terminal performs data transmission with the source cell and the target cell respectively, including:

The downlink data is received by the radio frequency module, and sent to the baseband module, and the downlink data is decoded by the baseband module to obtain synchronization information and/or data content corresponding to the downlink data.

Obtain uplink data through the baseband module, and send the first target uplink data to the radio frequency module, the first target uplink data includes all or part of the uplink data acquired by the baseband module, and then send the first target uplink data through the radio frequency module, respectively The module includes at least one first physical layer receiving unit, at least one second physical layer receiving unit, at least one first physical layer sending unit, at least one second physical layer sending unit and a first priority decision unit, at least one first physical layer sending unit The layer receiving unit and at least one first physical layer sending unit correspond to the target cell, at least one second physical layer receiving unit and at least one second physical layer sending unit correspond to the source cell, and the first priority decision unit corresponds to at least one second physical layer sending unit respectively. A physical layer sending unit is connected to at least one second physical layer sending unit.

In the scenario of receiving downlink data, the terminal receives the downlink synchronization data and/or the downlink user plane data through the at least one first receiving unit, and transmits the downlink synchronization data through the at least one first receiving unit sending to the at least one first physical layer receiving unit, and/or, sending the downlink user plane data to the at least one second physical layer receiving unit; receiving the at least one first physical layer receiving unit The downlink synchronization data is decoded to obtain synchronization information corresponding to the downlink synchronization data; and/or, the terminal receives the downlink through the at least one second physical layer receiving unit User plane data, performing decoding processing on the downlink user plane data to obtain data content corresponding to the downlink user plane data.

In the uplink data sending scenario, the terminal obtains the uplink synchronization data corresponding to the target cell through the at least one first physical layer sending unit, and/or obtains the uplink synchronization data corresponding to the target cell through the at least one second physical layer sending unit The uplink user plane data corresponding to the source cell; through the first priority decision unit, according to the priorities of the source cell and the target cell, it is determined to send the first target uplink data to the at least one first A sending unit, wherein the first target uplink data is one of the uplink synchronization data or the uplink user plane data; wherein, when the first target uplink data is the uplink synchronization data, the at least A first physical layer sending unit sends the uplink synchronization data to the at least one first sending unit; when the first target uplink data is the uplink user plane data, through the at least one second physical layer The sending unit sends the uplink user plane data to the at least one sending unit; and sends the first target uplink data through the at least one first sending unit.

It should be noted that the first data transmission method is similar to the processing process in the first architecture of the terminal shown in FIGS. 7-8 , and details are not repeated here.

The second data transfer method:

The terminal includes a radio frequency module and a baseband module, and the terminal performs data transmission with the source cell and the target cell respectively, including:

Receive downlink data through the radio frequency module, and send the received downlink data to the baseband module, and decode the received downlink data through the baseband module to obtain synchronization information and/or data content corresponding to the downlink data;

The uplink data is acquired through the baseband module, and then the acquired uplink data is sent to the radio frequency module, and the received uplink data is sent through the radio frequency module.

Specifically, the radio frequency module includes at least one third receiving unit, at least one fourth receiving unit, at least one fourth sending unit and at least one fifth sending unit, and the baseband module includes at least one fifth physical layer receiving unit , at least one sixth physical layer receiving unit, at least one seventh physical layer sending unit and at least one eighth physical layer sending unit, the at least one third receiving unit is connected to the at least one fifth physical layer receiving unit, the The at least one fourth receiving unit is connected to the at least one sixth physical layer receiving unit, the at least one fourth sending unit is connected to the at least one seventh physical layer sending unit, and the at least one fifth sending unit is connected to The at least one eighth physical layer sending unit is connected.

The terminal receives the downlink user plane data through the at least one third receiving unit, and sends the downlink user plane data to the at least one fifth physical layer receiving unit; and, the terminal receives the downlink user plane data through the at least one fifth physical layer receiving unit; A fifth physical layer receiving unit decodes the downlink user plane data to obtain data content corresponding to the downlink user plane data;

The terminal receives the downlink synchronization data through the at least one fourth receiving unit, and sends the downlink synchronization data to the at least one sixth physical layer receiving unit; and, the terminal uses the at least one fourth receiving unit The sixth physical layer receiving unit decodes the downlink synchronization signal to obtain the synchronization information of the target cell.

The terminal obtains the uplink user plane data through the at least one seventh physical layer sending unit, and sends the uplink user plane data to the at least one fourth sending unit; and, the terminal uses the at least one The fourth sending unit sends the uplink user plane data; and/or,

The terminal acquires the uplink synchronization data through the at least one eighth physical layer sending unit, and sends the uplink synchronization data to the at least one fifth sending unit; and, the terminal uses the at least one fifth sending unit The sending unit sends the uplink synchronization data.

It should be noted that the first data transmission method is similar to the processing process in the second architecture of the terminal shown in FIGS. 9-10 , and details are not repeated here.

The third data transfer method:

The terminal includes a radio frequency module and a baseband module, and the terminal performs data transmission with the source cell and the target cell respectively, including:

The terminal receives downlink data through the radio frequency module, and sends the received downlink data to the baseband module, and decodes the received downlink data through the baseband module to obtain synchronization information and/or data content corresponding to the downlink data.

The terminal obtains uplink data through the baseband module, and sends the uplink data to the radio frequency module, and sends the second target uplink data through the radio frequency module, and the second target uplink data is part or all of the uplink data.

Specifically, the radio frequency module includes at least one first receiving unit, at least one second sending unit and a second priority decision unit, and the baseband module includes at least one first physical layer receiving unit, at least one second physical layer receiving unit, at least one One third physical layer sending unit and at least one fourth physical layer sending unit, at least one first physical layer receiving unit and at least one third physical layer sending unit corresponding to the target cell, at least one fourth physical layer sending unit and at least one The second physical layer receiving unit corresponds to the source cell.

In the scenario of receiving downlink data, the terminal receives downlink data through at least one first receiving unit, at least one first physical layer receiving unit and at least one second physical layer receiving unit. similar and will not be repeated here.

In the uplink data sending scenario, the terminal receives the uplink synchronization data through the at least one third physical layer sending unit, and sends the uplink synchronization data to the second priority decision unit; and/or, through the At least one fourth physical layer sending unit receives the uplink user plane data, and sends the uplink user plane data to the second priority decision unit; through the second priority decision unit, according to the source cell and The priority of the target cell is determined to send the second target uplink data to the at least one sending unit, where the second target uplink data is one of the uplink synchronization data or the uplink user plane data ; Sending the second target uplink data through the at least one second sending unit.

It should be noted that the third data transmission method is similar to the processing procedure in the third architecture of the terminal shown in FIG. 11-FIG. 12 , and will not be repeated here.

The fourth data transmission method:

The terminal includes a radio frequency module and a baseband module, and the terminal performs data transmission with the source cell and the target cell respectively, including:

The terminal receives the downlink data from the radio frequency module through the digital front-end control submodule, and sends the downlink data to the physical layer transceiver submodule; The submodule receives the downlink data, and decodes the downlink data to obtain the synchronization information and/or data content.

The terminal obtains uplink data through the physical layer transceiver submodule, and sends the uplink data to the digital front-end control submodule, the uplink data includes uplink synchronization data and/or uplink user plane data; through the digital front-end The control submodule sends third target uplink data to the radio frequency module, where the third target uplink data includes all or part of the uplink data; and sends the third target uplink data through the radio frequency module.

Specifically, the radio frequency module includes at least one second receiving unit, at least one third sending unit, and the digital front-end control submodule includes at least one front-end receiving unit, at least one front-end sending unit and a third priority decision unit, The physical layer transceiver sub-module includes at least one third physical layer receiving unit, at least one fourth physical layer receiving unit, at least one fifth physical layer sending unit and at least one sixth physical layer sending unit, the at least one third physical layer receiving unit The physical layer receiving unit and the at least one fifth physical layer sending unit correspond to the target cell, and the at least one fourth physical layer receiving unit and the at least one sixth physical layer sending unit correspond to the source cell.

The terminal receives the downlink synchronization data and/or the downlink user plane data through the at least one second receiving unit, and sends the received downlink synchronization data and/or the downlink user plane data to the At least one front-end receiving unit; sending the downlink synchronization data to the at least one third physical layer receiving unit through the at least one front-end receiving unit, and/or sending the downlink user plane data to the at least one The fourth physical layer receiving unit; decodes the downlink synchronization signal through the at least one third physical layer receiving unit, so as to obtain synchronization information corresponding to the downlink synchronization data; and/or, through the at least one The fourth physical layer receiving unit decodes the downlink user plane data to obtain data content corresponding to the downlink user plane data.

The terminal receives the uplink synchronization data corresponding to the target cell through the at least one fifth physical layer sending unit, and sends the uplink synchronization data to the third priority decision unit; and/or, through the at least A sixth physical layer sending unit, configured to receive the uplink user plane data of the source cell, and send the uplink user plane data to the third priority decision unit; through the third priority decision unit, Determine the third target uplink data according to the priorities of the source cell and the target cell, and send the third target uplink data to the at least one front-end sending unit; through the at least one front-end sending unit sending the received third target uplink data to the at least one third sending unit; sending the third target uplink data through the at least one third sending unit.

It should be noted that the fourth data transmission method is similar to the processing procedure in the fourth architecture of the terminal shown in FIG. 13-FIG. 14 , and will not be repeated here.

In the above technical solution, the radio frequency module and the baseband module of the terminal can realize that after the terminal receives the handover command, it can not only synchronize with the target cell, but also perform user plane data transmission with the source cell, that is, the terminal completes Before synchronizing with the target cell, the terminal may not interrupt the user plane data transmission with the source cell, then the interruption duration of the user plane data of the terminal only includes the duration of executing the handover command, thereby reducing the interruption duration of user plane data during the cell handover process .

S1518: The target base station sends a handover success message to the source base station, and the source base station receives the handover success message;

S1519: The source base station sends an SN state transfer message to the target base station, and the target base station receives the SN state transfer message;

So far, the process of cell handover by the terminal is completed. After this step, the terminal can perform user plane data transmission with the target base station, which is marked by a dotted line in FIG. 15 .

It can be seen from the above process that in the cell handover method shown in Figure 15, the duration of interruption of user plane data is the processing duration of the steps between the last two dashed lines in Figure 15, and the start time of interruption of user plane data is not received by the terminal. It is determined by the time point of the handover command at the RRC layer, but by the time point when the terminal actually switches the cell, that is, by the time point when the handover completion command message is sent. It can be seen that in the handover process, the interruption of user plane data The duration is not affected by the duration required for uplink and downlink synchronization between the terminal and the target cell during the cell handover process, which can reduce the interruption time during the cell handover process.

FIG. 16 shows another schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 16 , a communication device 1600 includes: a processor 1601 , a memory 1602 , a communication interface 1603 and a bus 1604 . Wherein, the memory 1602 is used to store instructions, and the processor 1601 is used to execute the instructions stored in the memory 1602 . The processor 1601 , the memory 1602 and the communication interface 1603 are connected to each other through the bus 1604 .

The processor 1601 is configured to: receive a handover instruction, and perform data transmission with the source cell and the target cell respectively before switching to the target cell. It should be understood that the terminal 1600 may specifically be the communication device shown in FIG. 4A or FIG. 4B , or the terminal in the above-mentioned embodiment shown in FIG. 15 , or the functions of the terminal in the above-mentioned embodiment shown in FIG. 15 may be integrated in In the communication device 1600, the method in any one of the above-mentioned embodiments in FIG. 6-FIG. 15 is executed.

Optionally, the memory 1602 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1601 . A portion of memory 1602 may also include non-volatile random access memory. For example, memory 1602 may also store device type information. The processor 1601 may be configured to execute instructions stored in the memory, and when the processor executes the instructions, the processor 1601 may execute various steps and/or processes corresponding to the communication device in the foregoing method embodiments.

It should be understood that in the embodiment of the present application, the processor may be a central processing unit, and the processor may also be other general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays, or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

The embodiment of the present application further provides a computer-readable storage medium, the computer-readable storage medium stores computer instructions, and when the computer instructions are run on the electronic device, the electronic device is made to perform the aforementioned holding method Detection method.

Any combination of one or more computer-readable storage media may be used for the above-mentioned computer-readable storage medium. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections with one or more leads, portable computer disks, hard disks, random access memory (RAM), readonly memory, ROM), erasable programmable read only memory (EPROM) or flash memory, optical fiber, portable compact disk read only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination. In this document, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including - but not limited to - electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including - but not limited to - wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

Computer program code for carrying out the operations described herein can be written in one or more programming languages, or combinations thereof, including object-oriented programming languages—such as Java, Smalltalk, C++, and conventional Procedural Programming Language - such as "C" or a similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user computer via any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., using Internet Service Provider to connect via the Internet).

The embodiment of the present application also provides a computer program product, which, when running on a computer, causes the computer to execute part or all of the steps in the above method embodiments.

Through the description of the above embodiments, those skilled in the art can understand that for the convenience and brevity of the description, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be assigned by different Completion of functional modules means that the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or It may be integrated into another device, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separated, and a component shown as a unit may be one physical unit or multiple physical units, which may be located in one place or distributed to multiple different places. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If an integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium Among them, several instructions are included to make a device (which may be a single-chip microcomputer, a chip, etc.) or a processor (processor) execute all or part of the steps of the methods in various embodiments of the present application. The above-mentioned storage medium includes: U disk, mobile hard disk, read only memory (read only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk, and other various media that can store program codes.

The above content is only the specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application, and should covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (21)

1. A communication device, comprising a radio frequency module and a baseband module, wherein:

the radio frequency module and the baseband module are used for receiving a target message, and the target message is used for indicating the communication device to be switched from a source cell to a target cell; and a controller configured to perform data transmission with the source cell and the target cell respectively before the communication apparatus is handed over to the target cell, where the data includes synchronization data for synchronizing the communication apparatus with the target cell and user plane data between the communication apparatus and the source cell;

the baseband module is further configured to switch to the target cell after synchronizing with the target cell according to the synchronization data.

2. The communications apparatus as claimed in claim 1, wherein the synchronization data comprises downlink synchronization data and uplink synchronization data, and the user plane data comprises uplink user plane data and downlink user plane data.

3. The communication device according to claim 2, wherein the radio frequency module is specifically configured to:

receiving downlink data, wherein the downlink data comprises the downlink synchronous data and/or the downlink user plane data; and (c) a second step of,

sending the downlink data to the baseband module;

the baseband module is specifically configured to:

and decoding the downlink data to acquire the synchronization information and/or the data content corresponding to the downlink data.

4. The communication apparatus according to claim 3, wherein the radio frequency module comprises at least one first receiving unit, the baseband module comprises at least one first physical layer receiving unit and at least one second physical layer receiving unit, the at least one first physical layer receiving unit corresponds to the target cell, the at least one second physical layer receiving unit corresponds to the source cell, and wherein:

the at least one first receiving unit is configured to receive the downlink synchronization data and/or the downlink user plane data; and the number of the first and second groups,

sending the downlink synchronous data to the at least one first physical layer receiving unit, and/or sending the downlink user plane data to the at least one second physical layer receiving unit;

the at least one first physical layer receiving unit is configured to receive the downlink synchronization data and perform decoding processing on the downlink synchronization data to obtain synchronization information corresponding to the downlink synchronization data;

the at least one second physical layer receiving unit is configured to receive the downlink user plane data and perform decoding processing on the downlink user plane data to obtain data content corresponding to the downlink user plane data.

5. The communication apparatus according to claim 3 or 4, wherein the baseband module is further configured to obtain uplink data, where the uplink data includes uplink synchronization data and/or uplink user plane data; sending first target uplink data to the radio frequency sub-module, wherein the first target uplink data comprises all or part of the uplink data;

the radio frequency module is further configured to send the first target uplink data.

6. The communication apparatus according to claim 5, wherein the radio frequency module comprises at least one first transmitting unit, the baseband module comprises at least one first physical layer transmitting unit, at least one second physical layer transmitting unit, and a first priority determining unit, the first priority determining unit is respectively connected to the at least one first physical layer transmitting unit and the at least one second physical layer transmitting unit, the at least one first physical layer transmitting unit corresponds to the target cell, and the at least one second physical layer transmitting unit corresponds to the source cell, wherein:

the at least one first physical layer sending unit is configured to obtain uplink synchronization data corresponding to the target cell;

the at least one second physical layer sending unit is configured to obtain uplink user plane data corresponding to the source cell;

the first priority decision unit is configured to determine to send the first target uplink data to the at least one first sending unit according to priorities of the source cell and the target cell, where the first target uplink data is one of the uplink synchronization data and the uplink user plane data;

the at least one first physical layer sending unit is further configured to send the uplink synchronization data to the at least one first sending unit when the first target uplink data is the uplink synchronization data;

the at least one second physical layer sending unit is further configured to send the uplink user plane data to the at least one first sending unit when the first target uplink data is the uplink user plane data;

the at least one first sending unit is configured to send the first target uplink data.

7. The communication apparatus according to claim 3 or 4, wherein the baseband module is further configured to obtain uplink data, the uplink data including uplink synchronization data and/or uplink user plane data, and send the uplink data to the radio frequency module;

the radio frequency module is further configured to send second target uplink data, where the second target uplink data is part or all of the uplink data.

8. The communication apparatus of claim 7, wherein the baseband module comprises at least one third physical layer transmission unit and at least one fourth physical layer transmission unit, the at least one third physical layer transmission unit corresponds to the target cell, the at least one fourth physical layer transmission unit corresponds to the source cell, and the radio frequency module comprises at least one second transmission unit and a second priority decision unit, wherein:

the at least one third physical layer sending unit is configured to receive the uplink synchronization data and send the uplink synchronization data to the second priority decision unit;

the at least one fourth physical layer transmitting unit is configured to receive the uplink user plane data and transmit the uplink user plane data to the second priority decision unit;

the second priority decision unit is configured to determine to send the second target uplink data to the at least one sending unit according to priorities of the source cell and the target cell, where the second target uplink data is one of the uplink synchronization data and the uplink user plane data;

the at least one second sending unit is configured to send the second target uplink data.

9. The communication apparatus according to claim 3, wherein the baseband module comprises a digital front-end control sub-module and a physical layer transceiver sub-module, the digital front-end control sub-module is respectively connected to the radio frequency module and the physical layer transceiver sub-module, and wherein:

the digital front-end control submodule is used for receiving the downlink data from the radio frequency module and sending the downlink data to the physical layer transceiving submodule;

the physical layer transceiver sub-module is configured to receive the downlink data from the digital front-end control sub-module, and decode the downlink data to obtain the synchronization information and/or the data content.

10. The communication apparatus of claim 9, wherein the radio frequency module comprises at least one second receiving unit, the digital front-end control sub-module comprises at least one front-end receiving unit, and the physical layer transceiver sub-module comprises at least one third physical layer receiving unit and at least one fourth physical layer receiving unit, the at least one third physical layer receiving unit corresponds to the target cell, and the at least one fourth physical layer receiving unit corresponds to the source cell, wherein:

the at least one second receiving unit is configured to receive the downlink synchronization data and/or the downlink user plane data, and send the received downlink synchronization data and/or the received downlink user plane data to the at least one front-end receiving unit;

the at least one front end receiving unit is configured to send the downlink synchronization data to the at least one third physical layer receiving unit, and/or send the downlink user plane data to the at least one fourth physical layer receiving unit;

the at least one third physical layer receiving unit is configured to decode the downlink synchronization signal to obtain synchronization information corresponding to the downlink synchronization data;

the at least one fourth physical layer receiving unit is configured to perform decoding processing on the downlink user plane data to obtain data content corresponding to the downlink user plane data.

11. The communication apparatus according to claim 9 or 10, wherein the physical layer transceiver sub-module is further configured to obtain uplink data, where the uplink data includes uplink synchronization data and/or uplink user plane data; and sending the uplink data to the digital front-end control submodule;

the digital front-end control submodule is also used for sending third target uplink data to the radio frequency module, wherein the third target uplink data comprises all or part of the uplink data;

the radio frequency module is further configured to send the third target uplink data.

12. The communications apparatus as claimed in claim 11, wherein the rf module further includes at least one third transmitting unit, the digital front-end control sub-module further includes at least one front-end transmitting unit and a third priority determining unit, the physical layer transceiver sub-module further includes at least one fifth physical layer transmitting unit and at least one sixth physical layer transmitting unit, the at least one fifth physical layer transmitting unit corresponds to the target cell, and the at least one sixth physical layer transmitting unit corresponds to the source cell, wherein:

the at least one fifth physical layer sending unit is configured to receive uplink synchronization data corresponding to the target cell and send the uplink synchronization data to the third priority decision unit;

the at least one sixth physical layer sending unit is configured to receive uplink user plane data of the source cell, and send the uplink user plane data to the third priority decision unit;

the third priority decision unit is configured to determine the third target uplink data according to the priorities of the source cell and the target cell, and send the third target uplink data to the at least one front-end sending unit;

the at least one front-end sending unit is configured to send the received third target uplink data to the at least one third sending unit;

the at least one third sending unit is configured to send the third target uplink data.

13. The communication apparatus according to claim 3, wherein the radio frequency module comprises at least one third receiving unit, at least one fourth receiving unit, and the baseband module comprises at least one fifth physical layer receiving unit and at least one sixth physical layer receiving unit, the at least one third receiving unit is connected with the at least one fifth physical layer receiving unit, and the at least one fourth receiving unit is connected with the at least one sixth physical layer receiving unit, wherein:

the at least one third receiving unit is configured to receive the downlink user plane data and send the downlink user plane data to the at least one fifth physical layer receiving unit;

the at least one fifth physical layer receiving unit is configured to perform decoding processing on the downlink user plane data to obtain data content corresponding to the downlink user plane data;

the at least one fourth receiving unit is configured to receive the downlink synchronization data and send the downlink synchronization data to the at least one sixth physical layer receiving unit;

the at least one sixth physical layer receiving unit is configured to perform decoding processing on the downlink synchronization signal to obtain synchronization information of the target cell.

14. The communication apparatus according to claim 13, wherein the radio frequency module comprises at least one fourth transmission unit and at least one fifth transmission unit, the baseband module comprises at least one seventh physical layer transmission unit and at least one eighth physical layer transmission unit, the at least one fourth transmission unit is connected to the at least one seventh physical layer transmission unit, and the at least one fifth transmission unit is connected to the at least one eighth physical layer transmission unit, wherein: :

the at least one seventh physical layer transmitting unit is configured to acquire the uplink user plane data and transmit the uplink user plane data to the at least one fourth transmitting unit;

the at least one eighth physical layer sending unit is configured to acquire the uplink synchronization data and send the uplink synchronization data to the at least one fifth sending unit;

the at least one fourth sending unit is configured to send the uplink user plane data;

the at least one fifth sending unit is configured to send the uplink synchronization data.

15. The communications device of any one of claims 1-14, wherein the radio frequency module is further configured to:

and reporting target capability information to the source cell before receiving the target message, wherein the target capability information is used for indicating that the communication device has the capability of communicating with the source cell before switching to the target cell.

16. A cell handover method applied to a communication device, the method comprising:

the communication device receives a target message, wherein the target message is used for instructing the communication device to be switched from a source cell to a target cell;

before the communication device is switched to the target cell, the communication device respectively performs data transmission with the source cell and the target cell, wherein the data comprises synchronization data used for synchronizing the communication device with the target cell and user plane data between the communication device and the source cell;

and the communication device is switched to the target cell after being synchronized with the target cell according to the synchronization data.

17. The method of claim 16, wherein the synchronization data comprises downlink synchronization data and uplink synchronization data, and wherein the user plane data comprises uplink user plane data and downlink user plane data.

18. The method of claim 16 or 17, wherein before the communication device receives the target message, the method further comprises:

and reporting target capability information to the source cell, wherein the target capability information is used for indicating that the communication device has the capability of communicating with the source cell before switching to the target cell.

19. A communication device comprising a processor and a transceiver, wherein;

the transceiver is configured to receive a target message, where the target message is used to instruct the communication device to switch from a source cell to a target cell; and the base station is used for respectively carrying out data transmission with the source cell and the target cell before the communication device is switched to the target cell, wherein the data comprises synchronous data used for synchronizing signals of the terminal and the target cell and user plane data between the communication device and the source cell;

and the processor is used for switching to the target cell after being synchronized with the target cell according to the synchronization data.

20. A computer-readable storage medium for storing a computer program comprising instructions for implementing the method of any one of claims 16 to 18.

21. A computer program product comprising computer program code which, when run on a computer, causes the computer to carry out the method according to any one of claims 16 to 18.

Images