A handover method, system and electronic device of a base station cell

Abstract

The scheme relates to a handover method, system and electronic equipment of a base station cell, comprising: a base station detecting communication state information of a terminal device and a first cell in the base station, and acquiring communication service information of all relay transition ends; if the communication state information is communication interruption, determining a target relay transition end according to the communication service information of all relay transition ends; sending a communication reestablishment instruction to the target relay transition end, and the target relay transition end receiving and analyzing the communication reestablishment instruction, so that the target relay transition end establishes a communication connection with the terminal device, and the target relay transition end establishes a communication connection with a second cell and / or a third cell in the base station. The embodiment of the application can improve the utilization rate of network resources and the efficiency of cell handover, and can be widely applied in the field of communication technology.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a method, system and electronic device for handover of base station cells. Background Technology

[0002] Because actual network deployments have coverage blind spots, terminals in these blind spots cannot communicate with network devices. Therefore, the 3rd Generation Partnership Project (3GPP) introduced the concept of relay in its standard protocols to improve network coverage and solve the problem of coverage blind spots.

[0003] If the load at the cell edge suddenly increases during a specific period, the network resources already configured at the cell edge may be insufficient. Since network resource configuration is complete and the time for reconfiguration has not yet arrived, users at the cell edge connected to the terminal device may be in a resource-unavailable situation. Although other cells of the base station may have surplus network resources, the terminal device is not connected to other cells and cannot utilize these surplus resources. This can lead to cell handover failure or radio link failure (RLF), resulting in wasted resources and low network resource utilization. In this situation, the terminal device needs to hand over to a cell with available radio resources and restore network connectivity to meet communication needs and continue its services. However, traditional cell handover methods rely on the terminal device and its data to complete the handover, resulting in relatively low handover efficiency. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method, system and electronic device for handover of base station cells, which can improve the utilization rate of base station network resources, reduce the dependence on terminal equipment and terminal equipment data to complete cell handover, and improve cell handover efficiency.

[0005] To address the aforementioned problems, this invention provides a method for handover of base station cells, applied to a base station comprising several cells, and includes the following steps:

[0006] The system detects the communication status information between the terminal device and the first cell in the base station, and obtains the communication service information of all relay terminals.

[0007] If the communication status information indicates a communication interruption, the target relay terminal is determined based on the communication service information of all relay terminals.

[0008] Send a communication reconstruction command to the target relay transition terminal to enable the target relay transition terminal to establish a communication connection with the terminal device, and to enable the target relay transition terminal to establish a communication connection with the second cell and / or the third cell in the base station.

[0009] Optionally, determining the target relay terminal based on the communication service information of all relay terminals specifically includes:

[0010] The device status, data channel transmission rate, service quality, and hop count from the terminal device are obtained from the communication service information.

[0011] The relay endpoint that is idle, has a data channel transmission rate that meets the rate requirements of the terminal device, has a service quality that meets the quality requirements of the terminal device, and has the smallest hop count from the terminal device is identified as the target relay endpoint.

[0012] Optionally, the communication reconstruction instruction is determined by the following method:

[0013] Obtain cell information for all cells in the base station, the cell information including the cell's equipment information and cell beam;

[0014] The cell beam of the first cell is matched with the cell beams of all cells to determine the third cell;

[0015] Obtain the pointing information from the second cell;

[0016] A communication reconstruction instruction is generated based on the device information of the third cell and the pointing information.

[0017] Optionally, the method further includes:

[0018] A relay pause command is sent to the target relay transition terminal, so that the target relay transition terminal forwards the relay pause command to the terminal device.

[0019] To address the aforementioned problems, this invention provides a method for handing over a base station cell, applied to a target relay transition end, comprising the following steps:

[0020] Receive communication reconstruction instructions sent by the base station;

[0021] Parse the communication reconstruction instruction to obtain the first connection information between the target relay transition terminal and the terminal device, as well as the second connection information between the target relay transition terminal and the second cell and / or the third connection information between the base station and the third cell;

[0022] A communication connection is established with the terminal device based on the first connection information, a communication connection is established with the second cell based on the second connection information, and / or a communication connection is established with the third cell based on the third connection information.

[0023] Optionally, establishing a communication connection with the second cell through the second connection information specifically includes:

[0024] Determine whether the second cell has wireless resources based on the second connection information;

[0025] If the second cell has radio resources, perform radio resource RRC reconstruction to complete the communication connection with the second cell.

[0026] Optionally, establishing a communication connection with the terminal device based on the first connection information specifically includes:

[0027] The host address of the terminal device is determined based on the first connection information;

[0028] The host address of the terminal device is added to a first random number to generate a terminal private key.

[0029] The host address of the target relay terminal is added to the second random number to generate a relay private key.

[0030] A private key signature is generated based on the relay private key and the terminal private key, and a communication connection is established with the terminal device based on the private key signature.

[0031] To address the aforementioned problems, this invention provides a base station cell handover system, comprising: a base station, a terminal device, and a plurality of relay transition terminals, wherein one or more of the relay transition terminals are communicatively connected to the base station, the terminal device is communicatively connected to one or more of the relay transition terminals, and the plurality of relay transition terminals includes a target relay transition terminal; wherein:

[0032] The base station is configured to perform the method described in any of the first aspects above;

[0033] The target relay terminal is used in the method described in any of the second aspects above;

[0034] The terminal device is used to communicate with the target relay transition end.

[0035] To address the aforementioned problems, this invention provides a base station cell handover device applied to a base station. The system includes: a detection module, a determination module, and a transmission module; wherein:

[0036] The detection module is used to detect the communication status information between the terminal device and the first cell in the base station, and to obtain the communication service information of all relay terminals.

[0037] The determining module is used to determine the target relay terminal based on the communication service information of all relay terminals if the communication status information is communication interruption.

[0038] The sending module is configured to send a communication reconstruction instruction to the target relay transition terminal, so as to enable the target relay transition terminal to establish a communication connection with the terminal device, and to enable the target relay transition terminal to establish a communication connection with the second cell and / or the third cell in the base station.

[0039] To address the aforementioned problems, this invention provides a base station cell handover device applied at a target relay transition end. The system includes: a receiving module, a parsing module, and a communication establishment module; wherein:

[0040] The receiving module is used to receive communication reconstruction instructions sent by the base station;

[0041] The parsing module is used to parse the communication reconstruction instruction to obtain the first connection information between the target relay transition terminal and the terminal device, as well as the second connection information between the target relay transition terminal and the second cell and / or the third cell in the base station.

[0042] The communication establishment module is used to establish a communication connection with the terminal device based on the first connection information, establish a communication connection with the second cell based on the second connection information, and / or establish a communication connection with the third cell based on the third connection information.

[0043] To address the aforementioned problems, the present invention provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the aforementioned method.

[0044] To address the aforementioned problems, in another aspect, the present invention provides a computer-readable storage medium storing a processor-executable program, which, when executed by a processor, is used to perform the aforementioned method.

[0045] Implementing this invention provides the following beneficial effects: This invention detects the communication status information between the terminal device and the first cell in the base station, obtains the communication service information of all relay transition ends, and if the communication status information indicates a communication interruption, determines the target relay transition end based on the communication service information of all relay transition ends. The base station sends a communication reconstruction command to the target relay transition end, which receives and parses the command to obtain the first connection information between the target relay transition end and the terminal device, as well as the second connection information between the target relay transition end and the second cell and / or the third connection information of the third cell in the base station. A communication connection is established with the terminal device based on the first connection information, with the second cell based on the second connection information, and / or with the third cell based on the third connection information. The terminal device connects to the target relay transition end, and the target relay transition end connects to the second cell and / or the third cell, thereby completing the connection between the terminal device and the second cell and / or the third cell, and establishing a communication connection between the terminal device and the second or third cell with abundant network resources, thus improving the utilization rate of base station network resources. During the entire cell handover process, the handover is completed between the target relay transition end and the base station, reducing the dependence on terminal equipment and terminal equipment data, and improving the efficiency of cell handover while improving network resource utilization. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of a base station cell handover system provided by the present invention;

[0047] Figure 2 This is a flowchart of a base station cell handover method applied to a base station, provided by the present invention;

[0048] Figure 3 This is a flowchart of a method for determining a target relay transition end based on communication service information provided by the present invention;

[0049] Figure 4 This is a flowchart of obtaining a communication reconstruction instruction provided by the present invention;

[0050] Figure 5 This is a flowchart of a handover method for a base station cell applied to a target relay transition end, provided by the present invention.

[0051] Figure 6 This is a flowchart of a second connection information establishment communication connection with a second cell provided by the present invention;

[0052] Figure 7 This is a flowchart of a communication connection established with a terminal device based on first connection information provided by the present invention;

[0053] Figure 8This is an interaction diagram of a base station cell handover method in a specific embodiment of the present invention;

[0054] Figure 9 This is a schematic diagram of the structure of a base station cell handover device applied to a base station, provided by the present invention;

[0055] Figure 10 This is a schematic diagram of the structure of a handover device for a base station cell applied to a target relay transition end, provided by the present invention.

[0056] Figure 11 This is a schematic diagram of the structure of an electronic device provided by the present invention. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The step numbers in the following embodiments are only for ease of explanation and do not limit the order of the steps. The execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.

[0058] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application. It should be noted that the technical solutions provided in the various embodiments of this solution can be used interchangeably.

[0060] To better understand the technical solution of this invention, the relevant concepts are described below.

[0061] Base stations and cells: A base station is a public mobile communication base station. A base station contains cells. The communication area of ​​a base station is a 360° omnidirectional area. This omnidirectional area can be considered as an omnidirectional cell, that is, one base station is one cell. Alternatively, the omnidirectional cell can be divided into several cells, each cell being responsible for the communication of a certain area. That is, one base station contains several cells. A cell uses one or more wireless carriers to complete the wireless network coverage. Each cell is a basic unit in the wireless network topology.

[0062] Radio Resource Control (RRC) Re-establishment: This refers to Radio Resource Control, which mainly handles Layer 3 information in the control plane between User Equipment (UE) and Evolved Node-B (eNodeB). When the radio link between UE and the source network fails or the handover fails, UE initiates a connection request to the source network. The source network responds to the connection request, and UE establishes a connection with the source network. UE can initiate different connection requests based on different connection states.

[0063] RRC mainly includes the RRC Connection Management Processes, the Radio Bearer Control Processes, the RRC Connection Mobility Processes, and the Measurement Processes. This invention primarily uses the RRC Connection Management Processes.

[0064] Conditional handover (CHO): A conditional procedure is introduced between the relay transfer end and the base station to eliminate the connection between handover preparation and handover execution. In this procedure, handover preparation is completed before the serving cell handover, and the target cell access is completed later.

[0065] Beam: A beam refers to the shape formed on the Earth's surface by electromagnetic waves emitted by a satellite antenna, such as the beam of light shone from a flashlight into the dark. There are mainly global beams, spot beams, and shaped beams, the shape of which is determined by the transmitting antenna.

[0066] Repeaters (relay terminals): These can be mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical care, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, or wireless terminal devices in smart homes, etc.

[0067] In the embodiments of this application, such as Figure 1 As shown, Figure 1 This is a schematic diagram of a base station cell handover system. In the diagram, A is the terminal device, B is the relay transition terminal, and C is the base station. The system for completing base station cell handover in this invention includes a terminal device, a relay transition terminal, and a base station. The terminal device is not directly connected to the base station; it is connected to the relay transition terminal, and the relay connection is achieved through the connection between the relay transition terminal and the base station. When a terminal device experiences a wireless link failure or handover failure, the base station identifies an available relay transition point and issues a communication reconstruction command. Upon receiving the command, one of the relay transition points establishes a communication channel with the terminal device to enable relay communication between the terminal device and the base station. After establishing a communication connection with the new relay, the terminal device disconnects its communication channel from the original relay. The new relay connected to the terminal device in the relay transition point performs RCC reconstruction to rebuild the communication connection with the cell it was originally connected to, or performs a cell handover procedure to connect to a new cell. Because the terminal device is connected to the new relay, regardless of whether the new relay completes RCC reconstruction or performs a new cell handover procedure, the terminal device can switch from the cell it was connected to when the wireless link failed to the cell connected to the new relay, thus completing the cell handover for the terminal device.

[0068] It should be noted that, in order to better illustrate the technical solution of the present invention, repeater 1 mentioned below is the repeater connected before the terminal device switches, and repeater 2 is the repeater connected after the terminal device switches. It refers to the target relay transition end in this solution. Repeater 1 is connected to cell 1 before switching cells, repeater 2 is connected to cell 1 or cell 2 before switching cells, and repeater 2 is connected to cell 3 after switching cells and maintains the connection with cell 1 or cell 2.

[0069] To address the above problems, in some embodiments, such as Figure 2 As shown, Figure 2 This is a flowchart illustrating a base station cell handover method applied to a base station. The present invention provides a base station cell handover method applied to a base station comprising several cells, including the following steps:

[0070] S110. Detect the communication status information between the terminal device and the first cell in the base station, and obtain the communication service information of all relay terminals;

[0071] S120. If the communication status information is communication interruption, determine the target relay terminal based on the communication service information of all relay terminals.

[0072] S130. Send a communication reconstruction command to the target relay transition terminal to enable the target relay transition terminal to establish a communication connection with the terminal device, and to enable the target relay transition terminal to establish a communication connection with the second cell and / or the third cell in the base station.

[0073] The relay transition end includes several repeaters, and the target relay transition end is one of these repeaters.

[0074] Communication status information includes communication interruptions and connections between the terminal device and the base station.

[0075] The communication service information includes the device status, data channel transmission rate, service quality, hop count to the terminal device, total number of communication links, and number of idle communication links for each relay device in the relay transition end.

[0076] The communication reconstruction instruction is used to trigger the operation of the target relay transition end and provide information for the operation of the target relay transition end. The communication reconstruction instruction includes the private key signature required for the relay 2 to establish an encrypted channel with the terminal device, the device information of cell 1 or cell 2 required for the relay 2 to connect with cell 1 or cell 2, the device information of cell 3 required for the relay 2 to connect with cell 2, and the pointing information obtained from cell 1 or cell 2.

[0077] The first and second cells can be the same cell or different cells, while the third cell should be a different cell from the first and second cells. For example, before the communication between the detection terminal device and cell 1 of the base station is interrupted, the target relay transition end is also connected to cell 1. At this time, both the first and second cells are cell 1. Before the communication between the detection terminal device and cell 1 of the base station is interrupted, the target relay transition end is connected to cell 2. At this time, the first cell is cell 1 and the second cell is cell 2. The first and second cells are different.

[0078] When the terminal device detects a wireless link failure or handover failure, i.e., when the terminal device is not communicating with repeater 1 in the relay transition end or when repeater 1 is not communicating with the aforementioned cell 1, the communication status information of the terminal device and cell 1 in the base station is detected as communication interruption. At this time, the base station obtains the communication service information of all repeaters connected to it, and identifies a repeater 2 from the repeaters connected to it based on the communication service information. Repeater 2 is the aforementioned target relay transition end. The base station sends a communication reconstruction command to repeater 2. After receiving the communication reconstruction command, repeater 2 establishes a communication connection with the terminal device and establishes a communication connection with the second cell and / or the third cell in the base station.

[0079] The above-mentioned repeater 2 establishes a communication connection with the second and / or third cell in the base station in the following situations:

[0080] When the second cell is cell 1 and the third cell is cell 3, repeater 2 can perform RRC reconstruction and communicate with cell 1; it can also find a new cell through the base station, establish a communication connection with cell 3 and communicate, and cut off the communication connection with cell 1; it can also establish a communication connection with the new cell 3 while connecting with cell 1.

[0081] When the second cell is cell 2 and the third cell is cell 3, repeater 2 can perform RRC reconstruction and communicate with cell 2; it can also find a new cell through the base station, establish a communication connection with cell 3 and communicate, and cut off the communication connection with cell 2; it can also establish a communication connection with the new cell 3 while connecting with cell 2.

[0082] Since the terminal device communicates with the base station via repeater 2, the cell connected to repeater 2 is equivalent to the cell connected to the terminal device. When the terminal device's network is not smooth or interrupted, a suitable and available repeater can be used as a relay to reconnect in a timely manner, reducing the latency in the process of restoring the RRC connection, enabling the terminal to quickly restore the RRC connection or data communication, and increasing the probability of the terminal restoring the RRC connection.

[0083] In some embodiments, such as Figure 3 As shown, Figure 3 This is a flowchart for determining a target relay endpoint based on communication service information. Step S120, which determines the target relay endpoint based on the communication service information of all relay endpoints, specifically includes:

[0084] S121. Obtain device status, data channel transmission rate, service quality, and hop count from the communication service information;

[0085] S122, the device is in an idle state, the data channel transmission rate meets the rate requirements of the terminal device, the service quality meets the quality requirements of the terminal device, and the relay terminal with the smallest hop count from the terminal device is identified as the target relay terminal.

[0086] The device status being idle can mean that the repeater has at least one idle communication link.

[0087] The base station obtains the device status, data channel transmission rate, service quality, and hop count of all repeaters connected to it. After comparison and screening, the base station selects one of the repeaters whose device status is idle, whose data channel transmission rate meets the rate requirements of the terminal device, whose service quality meets the quality requirements of the terminal device, and whose hop count is the smallest as the repeater 2 connected to the terminal device.

[0088] For example, a repeater with an idle communication link, a data channel transmission rate of 2M / S, a low connection failure rate, and a hop count of 1 from the terminal device is identified as repeater 2.

[0089] All mobile devices within the cells covered by the base station that can provide network access can act as repeaters. In this case, the base station automatically selects an ideal repeater as repeater 2. Through a mobile ad hoc network between repeaters, suitable repeaters provide relay services, offering wireless access and data relay to terminal devices. This eliminates the need for base station to reconfigure wireless resources, improving wireless resource utilization, reducing inter-cell interference, enhancing network signal continuity, and minimizing network outages.

[0090] In some embodiments, such as Figure 4 As shown, Figure 4 This is a flowchart of obtaining a communication reconstruction instruction. In step S130, the base station sends a communication reconstruction instruction to the target relay transition end. The communication reconstruction instruction is determined by the following method:

[0091] S131. Obtain cell information for all cells in the base station, wherein the cell information includes the device information and cell beam of the cell;

[0092] S132. Match the cell beam of the first cell with the cell beams of all cells to determine the third cell;

[0093] S133. Obtain pointing information from the second cell;

[0094] S134. Generate a communication reconstruction instruction based on the device information of the third cell and the pointing information.

[0095] The equipment information of a cell includes, but is not limited to, the cell's equipment status, data channel transmission rate, quality of service, total number of communication links, number of idle communication links, cell number, etc.

[0096] Specifically, the base station acquires the cell beams of all cells adjacent to cell 1, compares the acquired cell beams with the beam of cell 1, including but not limited to comparing the type, frequency band and orientation of the beams, selects cell 3 from all cells, determines that the cell beam of the selected cell 3 is different from the beam of cell 1, and uses cell 3 as the target cell for CHO handover.

[0097] The pointing information is obtained from cell 2 (or cell 1 when the second cell is cell 1). The pointing information includes signal pointing. A communication reconstruction instruction is generated based on the signal pointing and the equipment information of cell 3. When repeater 2 performs cell handover through CHO, it can find cell 3 based on the equipment information of cell 3 and find the connection method based on the signal pointing, which can reduce the probability of cell handover failure and improve the reliability of cell handover.

[0098] The signal direction is used to indicate that repeater 2 can find cell 2 through cell 1.

[0099] In some embodiments, the method further includes:

[0100] S140. Send a relay pause command to the target relay transition terminal so that the target relay transition terminal forwards the relay pause command to the terminal device.

[0101] Specifically, after repeater 2 establishes a communication connection with the base station and a communication connection with the terminal device, the base station sends a relay pause command to repeater 2. Repeater 2 then forwards the relay pause command to the terminal device. After receiving the relay pause command, the terminal device interrupts its communication connection with repeater 1 or cell 1.

[0102] The relay pause command can be sent in a PC5 RRC message or a PC5 adaptation layer control protocol data unit (PDU), or it can be broadcast to all terminal devices or multicast to a specific terminal device.

[0103] To address the above problems, in some embodiments, such as Figure 5 As shown, Figure 5 This is a flowchart illustrating a handover method for a base station cell applied at a target relay transition point. The present invention provides a handover method for a base station cell applied at a target relay transition point, comprising the following steps:

[0104] S210, Receive the communication reconstruction command sent by the base station;

[0105] S220. Parse the communication reconstruction instruction to obtain the first connection information between the target relay transition terminal and the terminal device, as well as the second connection information between the target relay transition terminal and the second cell and / or the third connection information between the base station and the third cell.

[0106] S230. Establish a communication connection with the terminal device based on the first connection information, establish a communication connection with the second cell through the second connection information, and / or establish a communication connection with the third cell through the third connection information.

[0107] The communication reconstruction command is used to trigger the target relay transition end to operate and to provide information for the target relay transition end to operate.

[0108] The first connection information includes the host address, and the second connection information includes the device information of the second cell.

[0109] The third connection information includes, but is not limited to, the device status of the third cell, data channel transmission rate, quality of service, total number of communication links, number of idle communication links, cell number, and signal direction.

[0110] The explanations for the first cell, the second cell, and the third cell are consistent with the cell handover method applied to base stations described above.

[0111] When the terminal device detects a wireless link failure or a handover failure, the repeater 2 receives a communication reconstruction instruction sent by the base station, and obtains the first connection information between the repeater 2 and the terminal device, the second connection information between the repeater 2 and cell 2 (or cell 1 when the second cell is cell 1) and / or cell 3 of the base station from the communication reconstruction instruction.

[0112] After obtaining the first connection information, the second connection information, and the third connection information, repeater 2 obtains the private key signature for connecting with the terminal device from the first connection information and uses the private key signature to establish a communication connection with the terminal device; it obtains the device information of cell 2 (or cell 1 if the second cell is cell 1) from the second connection information and performs RRC reconstruction in cell 2 (or cell 1 if the second cell is cell 1) to complete the communication connection; it obtains the device information and signal direction of cell 3 from the third connection information and establishes a communication connection with cell 3 through the signal direction.

[0113] The repeater 2 establishes a communication connection with the second cell through the second connection information and / or establishes a communication connection with the third cell through the third connection information, including the following situations:

[0114] When the second cell is cell 1 and the third cell is cell 3, repeater 2 can perform RRC reconstruction and communicate with cell 1; it can also find a new cell through the base station, establish a communication connection with cell 3 and communicate, and cut off the communication connection with cell 1; it can also establish a communication connection with the new cell 3 while connecting with cell 1.

[0115] When the second cell is cell 2 and the third cell is cell 3, repeater 2 can perform RRC reconstruction and communicate with cell 2; it can also find a new cell through the base station, establish a communication connection with cell 3 and communicate, and cut off the communication connection with cell 2; it can also establish a communication connection with the new cell 3 while connecting with cell 2.

[0116] Cell handover requires the exchange of resource configuration information. If the load on cell 1 or cell 2 increases during a specific period, and the allocated radio resources in cell 1 or cell 2 are insufficient, cell 1 or cell 2 may be in a resource-unavailable situation. In this case, even though the terminal device is connected to repeater 2, because cell 2 connected to repeater 2 has no available radio resources, repeater 2 cannot communicate with cell 1 or cell 2 during RRC reconstruction, and the terminal device remains in a state of infinite link failure. If cell 2 (or cell 1 if the second cell is cell 1) connected to repeater 2 has abundant radio resources, then the terminal device can resume communication after connecting to repeater 2.

[0117] To address the aforementioned issues and reduce the time required for terminal devices to restore communication, in some embodiments, such as... Figure 6 As shown, Figure 6 This is a flowchart illustrating the process of establishing a communication connection with a second cell using second connection information. Step S230 includes establishing a communication connection with the second cell using the second connection information, specifically including:

[0118] S231. Determine whether the second cell has wireless resources based on the second connection information;

[0119] S232. If the second cell has radio resources, perform radio resource RRC reconstruction to complete the communication connection with the second cell.

[0120] After receiving the second connection information, repeater 2 first parses the second connection information to determine whether cell 2 (or cell 1 if the second cell is cell 1) has radio resources. If there are radio resources, repeater 2 performs radio resource RRC reconstruction to complete the communication connection with cell 2.

[0121] If cell 2 has no wireless resources, repeater 2 connects to cell 3, which has wireless resources, based on the third connection information, thereby restoring communication for the terminal device.

[0122] When repeater 2 establishes a communication connection with the cell, it considers the utilization of the radio resources of cell 2 (or cell 1 when the second cell is cell 1). If cell 2 has no radio resources, it considers connecting with cell 3 and utilizing the radio resources of cell 3. Thus, this scheme can quickly complete the RRC reconstruction with cell 2, restore communication, and improve the utilization rate of cell radio resources.

[0123] For an established RRC connection, RRC can reconfigure radio resources and coordinate different radio resource bearers related to the RRC connection. Before cell handover, repeater 2 has been authenticated with cell 2 or cell 1. After confirming that cell 1 or cell 2 has radio resources, there is no need to authenticate again. The RRC reconstruction process can be initiated directly to restore the previously established RRC connection.

[0124] In order to restore communication as quickly as possible, in some embodiments, the target relay transition end establishes a communication connection with the third cell through the third connection information.

[0125] Specifically, repeater 2 obtains the device information of cell 3 from the third connection information and the signal direction obtained from cell 1 or cell 2. It finds cell 3 through the device information of cell 3 and guides repeater 2 to connect to cell 3 through the signal direction.

[0126] To improve the privacy and security of data transmission during cell handover, in some embodiments, such as Figure 7 As shown, Figure 7 This is a flowchart illustrating the establishment of a communication connection with a terminal device based on first connection information. Step S230, which includes establishing a communication connection with the terminal device based on the first connection information, specifically includes:

[0127] S233. Determine the host address of the terminal device based on the first connection information;

[0128] S234. Perform a second addition operation on the host address of the terminal device and the first random number to generate a terminal private key;

[0129] S235. Perform a first addition operation on the host address of the target relay terminal and the second random number to generate a relay private key;

[0130] S236. Generate a private key signature based on the relay private key and the terminal private key, and establish a communication connection with the terminal device based on the private key signature.

[0131] The first random number and the second random number can be the same or different, and the first addition operation and the second addition operation can be the same or different.

[0132] The base station generates a temporary random number using the existing random number generation mechanism. Then, it uses the uniqueness of the host address and the random number to perform corresponding addition and AND operations to obtain the relay private key and the terminal private key. Finally, by encrypting the relay private key and the terminal private key, a unique private key signature is obtained, and this private key signature is compiled into the first connection information.

[0133] Repeater 2 establishes an encrypted channel with the terminal device through this private key signature to conduct communication, thereby improving the security and privacy of communication signals and data transmission.

[0134] To address the above problems, in some embodiments, such as Figure 1 As shown, Figure 1 This is a schematic diagram of a handover system structure for a base station cell, including: a base station, terminal equipment, and several relay transition terminals. One or more of the relay transition terminals are communicatively connected to the base station. The terminal equipment is communicatively connected to one or more of the relay transition terminals. The relay transition terminals include a target relay transition terminal. Wherein:

[0135] The base station is configured to perform any one of the above-described methods for handover of a base station cell applied to a base station;

[0136] The target relay transition end is used to execute any one of the above-described methods for handover of a base station cell applied to the target relay transition end;

[0137] The terminal device is used to communicate with the target relay transition end.

[0138] In some embodiments, the terminal device is further configured to receive a relay pause command sent by the target relay transfer end.

[0139] It is evident that the content of the above method embodiments is applicable to this system embodiment. The specific functions implemented in this system embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0140] like Figure 8 As shown, Figure 8 This is an interaction diagram of a base station cell handover method in a specific embodiment. The implementation process of the base station cell handover method is explained in detail below from the perspective of information interaction between the base station, the target relay transition end and the terminal equipment.

[0141] Examples include:

[0142] S1. The base station obtains communication service information from all relay terminals.

[0143] When the terminal device loses connection with cell 1 due to wireless link failure or handover failure, the base station obtains the communication service information of all repeaters connected to it. The meaning of the communication service information is the same as described above.

[0144] S2. The base station determines the target relay terminal based on the communication service information of all relay terminals.

[0145] Based on the terminal device information, the base station designates the repeater that has an idle data channel, whose data channel transmission rate and service quality can meet the requirements of the terminal device, and whose distance from the terminal device has the fewest hops as the target relay transition end to provide relay services, such as repeater 2. Repeater 2 is used as a communication relay between the terminal device and the base station.

[0146] S3. The base station confirms the target cell based on the cell information of all cells.

[0147] The target cell is the third cell in the above-mentioned base station cell handover method. The purpose of identifying the target cell is to prevent cell 2 or cell 1 connected to repeater 2 from having no radio resources. Repeater 2 can connect to the third cell with radio resources so that the terminal equipment can resume communication.

[0148] The method for obtaining the target cell includes determining the cell with radio resources based on the equipment information of all cells connected to the base station, comparing the cell beam of the cell with surplus radio resources with the cell beam of cell 1, and identifying the cell whose cell beam is different from that of cell 1 as the target cell. The equipment information of the cell is interpreted in the same way as the cell equipment information in the above method.

[0149] S4. The base station sends a communication reconstruction command to the target relay terminal.

[0150] The base station generates a communication reconstruction command based on the equipment information of the target cell and the signal direction obtained from cell 1 or cell 2. The signal direction is used to instruct repeater 1 to connect to cell 3 from the equipment in cell 1 or cell 2, and the equipment information of the target cell is used to locate cell 3.

[0151] The communication reconstruction instruction also includes a private key signature used by the terminal device to establish an encrypted channel with repeater 2. The process of generating the private key signature is as follows:

[0152] The base station generates a relay private key by adding the host address of the repeater 2 host address to a random number, and generates a terminal private key by adding the host address of the terminal device host address to a random number. The relay private key and the terminal private key are converted into two corresponding binary codes, and the two binary codes are ANDed to obtain a private key signature. The terminal device and repeater 2 establish an encrypted channel using a temporary private key signature.

[0153] S5. The target relay transition terminal parses the communication reconstruction command to obtain the first connection information between the target relay transition terminal and the terminal equipment, as well as the second connection information between the target relay transition terminal and the second cell in the base station and / or the third connection information of the third cell.

[0154] Repeater 2 parses the communication reconstruction command to obtain first connection information, second connection information and third connection information; the first connection information includes a private key signature, the second connection information includes radio resource information of cell 1 or cell 2, and the third connection information includes device information of cell 3 and signal direction obtained from cell 1 or cell 2.

[0155] S6. The target relay transition end establishes a communication connection with the terminal device based on the first connection information, establishes a communication connection with the second cell through the second connection information, and / or establishes a communication connection with the third cell through the third connection information.

[0156] Repeater 2 establishes an encrypted channel with the terminal device based on the private key signature and sends the first data to the terminal device. The first data is a handshake signal, which is used to confirm that the established encrypted channel can communicate normally, thereby reducing the probability of data packet loss of the terminal device during cell handover.

[0157] After repeater 2 confirms that there are wireless resources in cell 1 or cell 2 based on the equipment information of cell 1 or cell 2, it performs RRC reconstruction, establishes a communication connection with cell 1 or cell 2, and restores the communication of the terminal equipment.

[0158] Repeater 2 can also bypass RRC to rebuild the connection with cell 1 or cell 2, and instead directly obtain the device information of cell 3 with radio resources from the third connection information, and establish a connection with cell 3 under the guidance of the signal direction. At the same time, repeater 2 does not disconnect the connection with cell 1 or cell 2, but does not communicate with cell 1 or cell 2.

[0159] S7. The base station sends a relay pause command to the target relay transition terminal.

[0160] After the terminal device connects to repeater 2, the base station sends a relay pause command to repeater 2.

[0161] S8. The target relay transfer end sends a relay pause command to the terminal device. The interpretation of the relay pause command is the same as above.

[0162] Repeater 2 forwards the relay pause command to the terminal device.

[0163] S9. The terminal device interrupts the communication connection with the original relay terminal.

[0164] After receiving the relay pause command, the terminal device disconnects from repeater 1.

[0165] The above method improves the utilization rate of base station network resources. During the entire cell handover process, the handover is completed between the target relay transition end and the base station, reducing the dependence on terminal equipment and terminal equipment data. This improves the efficiency of cell handover while increasing the utilization rate of network resources.

[0166] To address the above problems, in some embodiments, such as Figure 9 As shown, Figure 9 This invention provides a handover device for a base station cell, applied to a base station. The system includes: a detection module 901, a determination module 902, and a transmission module 903; wherein:

[0167] The detection module 901 is used to detect the communication status information between the terminal device and the first cell in the base station, and to obtain the communication service information of all relay terminals.

[0168] The determining module 902 is used to determine the target relay terminal based on the communication service information of all relay terminals if the communication status information is communication interruption.

[0169] The sending module 903 is used to send a communication reconstruction command to the target relay transition terminal so that the target relay transition terminal establishes a communication connection with the terminal device, and so that the target relay transition terminal establishes a communication connection with the second cell and / or the third cell in the base station.

[0170] To address the above problems, in some embodiments, such as Figure 10 As shown, Figure 10 This invention provides a handover device for a base station cell applied at a target relay transition point. The system includes: a receiving module 1001, a parsing module 1002, and a communication establishment module 1003; wherein:

[0171] The receiving module 1001 is used to receive the communication reconstruction instruction sent by the base station;

[0172] The parsing module 1002 is used to parse the communication reconstruction instruction to obtain the first connection information between the target relay transition terminal and the terminal device, as well as the second connection information between the target relay transition terminal and the second cell and / or the third connection information between the base station and the third cell.

[0173] The communication establishment module 1003 is used to establish a communication connection with the terminal device based on the first connection information, establish a communication connection with the second cell based on the second connection information, and / or establish a communication connection with the third cell based on the third connection information.

[0174] like Figure 11 As shown, Figure 11This is a schematic diagram of the structure of an electronic device provided by the present invention. The present invention also provides an electronic device, which includes a processor 1101 and a memory 1102. The memory 1101 stores a computer program, and the processor 1102 executes the computer program to implement any of the methods described in the above method embodiments.

[0175] The memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. The memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include remote memory located remotely relative to the processor, which can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0176] It is evident that the content of the above method embodiments is applicable to this device embodiment. The specific functions implemented in this device embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0177] Furthermore, this application also discloses a computer program product or computer program stored in a computer-readable storage medium. A processor of a computer device can read the computer program from the computer-readable storage medium, and the processor executes the computer program, causing the computer device to perform the described method. Similarly, the content of the above method embodiments is applicable to this storage medium embodiment. The specific functions implemented in this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0178] The present invention also provides a computer-readable storage medium storing a processor-executable program, which, when executed by a processor, is used to perform any of the methods described in the above method embodiments.

[0179] It is understood that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0180] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A method for handover of a base station cell, applied to a base station, the base station comprising a plurality of cells, characterized in that, Includes the following steps: The system detects the communication status information between the terminal device and the first cell in the base station, and obtains the communication service information of all relay terminals. If the communication status information indicates a communication interruption, the target relay terminal is determined based on the communication service information of all relay terminals. Send a communication reconstruction command to the target relay terminal to enable the target relay terminal to establish a communication connection with the terminal device, and to enable the target relay terminal to establish a communication connection with the third cell in the base station; The communication reconstruction instruction is determined by the following method: Obtain cell information for all cells in the base station, the cell information including the cell's equipment information and cell beam; The cell beam of the first cell is matched with the cell beams of all cells to determine the third cell; Obtain pointing information from the second cell of the base station; The second cell is the cell that the target relay transition end connects to before the communication between the detection terminal equipment and the first cell in the base station is interrupted; A communication reconstruction instruction is generated based on the device information of the third cell and the pointing information; The third cell is different from the first cell, and the third cell is different from the second cell.

2. The method according to claim 1, characterized in that, The step of determining the target relay terminal based on the communication service information of all relay terminals specifically includes: The device status, data channel transmission rate, service quality, and hop count from the terminal device are obtained from the communication service information. The relay endpoint that is idle, has a data channel transmission rate that meets the rate requirements of the terminal device, has a service quality that meets the quality requirements of the terminal device, and has the smallest hop count from the terminal device is identified as the target relay endpoint.

3. The method according to claim 1, characterized in that, The method further includes: A relay pause command is sent to the target relay transition terminal, so that the target relay transition terminal forwards the relay pause command to the terminal device.

4. A method for handover of a base station cell, applied to the target relay transition end in the method of any one of claims 1-3, characterized in that, Includes the following steps: Receive communication reconstruction instructions sent by the base station; Parse the communication reconstruction instruction to obtain the first connection information between the target relay transition terminal and the terminal device, and the third connection information between the target relay transition terminal and the third cell in the base station; A communication connection is established with the terminal device based on the first connection information, and a communication connection is established with the third cell based on the third connection information; The third cell is different from the first cell.

5. The method according to claim 4, characterized in that, The communication reconstruction instruction also includes second connection information between the target relay transition terminal and the second cell in the base station; the third cell is different from the second cell, which is the cell that the target relay transition terminal was connected to before the communication between the detection terminal device and the first cell in the base station was interrupted; Determine whether the second cell has wireless resources based on the second connection information; If the second cell has radio resources, perform radio resource RRC reconstruction to complete the communication connection with the second cell.

6. The method according to claim 4, characterized in that, Establishing a communication connection with the terminal device based on the first connection information specifically includes: The host address of the terminal device is determined based on the first connection information; The host address of the terminal device is added to a first random number to generate a terminal private key. The host address of the target relay terminal is added to the second random number to generate a relay private key. A private key signature is generated based on the relay private key and the terminal private key, and a communication connection is established with the terminal device based on the private key signature.

7. A handover system for a base station cell, characterized in that, include: The system comprises a base station, a terminal device, and a plurality of relay transition terminals, wherein one or more of the relay transition terminals are communicatively connected to the base station, the terminal device is communicatively connected to one or more of the relay transition terminals, and the plurality of relay transition terminals includes a target relay transition terminal; wherein: The base station is configured to perform the method according to any one of claims 1-3; The target relay terminal is used to perform the method described in any one of claims 4-6; The terminal device is used to communicate with the target relay transition end.

8. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, It contains a processor-executable program, which, when executed by a processor, is used to perform the method according to any one of claims 1-6.

Images