Method and device for improving mobility success rate of Redcap terminal in high traffic scene

Abstract

The invention relates to the technical field related to communication, in particular to a method and device for improving the mobility success rate of a Redcap terminal in a high traffic scene. The method comprises the following steps of: querying whether a terminal in a target range supports Redcap or not through UE (User Equipment) capability signaling, for example, issuing a strategy for a terminal in a high traffic scene area; identifying a Redcap cell in a target range through an XN process; modifying conventional measurement reconfiguration in the target terminal into special measurement reconfiguration; the target terminal is a terminal supporting Redcap; carrying out Redcap terminal connection state movement on the terminal supporting the Redcap; wherein the special measurement reconfiguration carries a neighbor cell list allowing the Redcap terminal to switch and other measurement configuration parameters. Through the setting, the mobility success rate of the Redcap terminal in the connection state can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication-related technologies, and in particular to a method and device for improving the mobility success rate of Redcap terminals in high-traffic scenarios. Background Art

[0002] RedCap is a feature in 5G, while UE capability signaling in 4G (such as UE capability in LTE) mainly targets 4G-related capabilities, such as supported frequency bands, modulation modes (such as 256QAM), UE Category, etc. Therefore, the design and protocol of 4G base stations do not include fields or signaling for querying RedCap capabilities, and 4G base stations may not be able to directly query whether the terminal supports RedCap capabilities through UE capability signaling. Only when the 5G network is upgraded to version R17 and Redcap technology is enabled can the normal access of Redcap terminals be supported. However, in actual deployment, only some 5G networks have been upgraded to version R17 and Redcap technology has been enabled. Therefore, when Redcap terminals switch from 4G to 5G, they often switch to 5G NR cells by mistake, resulting in handover failure. After that, Redcap terminals ping-pong between 4G and 5G networks. Especially in high-traffic scenarios, that is, multiple Redcap terminals are conducting 4 / 5G interoperability test scenarios at the same time, and in areas where the existing 5G deep coverage is insufficient and there are a large number of Redcap terminals, the above problems are very likely to occur. Not only does it affect terminal perception, but it also adds unnecessary signaling overhead to the base station. Summary of the invention

[0003] In view of this, the embodiments of the present application are directed to providing a method and apparatus for improving the mobility success rate of Redcap terminals in high traffic scenarios.

[0004] According to the first aspect of the present application, the present application provides a method for improving the success rate of Redcap terminal mobility in high traffic scenarios, including: Use UE capability signaling to query whether the terminals within the target range support Redcap; Identify the Redcap cells within the target range through the XN process; Modify the conventional measurement reconfiguration in the target terminal to special measurement reconfiguration; the target terminal is a terminal supporting Redcap; For terminals that support Redcap, move the Redcap terminal in connection state; The special measurement reconfiguration carries a list of neighboring cells that allow the Redcap terminal to switch and other measurement configuration parameters.

[0005] In some embodiments, whether the terminal within the target range has Redcap capability through UE capability signaling includes: The Redcap field in the UE capability information is used to identify whether the terminal supports both R17 and Redcap. If not, determine whether the terminal supports Redcap through the 4G capability field in the UE capability information.

[0006] In some embodiments, determining whether the terminal supports Redcap by using the 4G capability field in the UE capability information includes: If the 4G capability field of the terminal supports Cat4 at most, it is determined that the terminal supports Redcap; If the 4G capability field of the multi-mode terminal supports at least Cat6, then the terminal is judged to be a 5G NR standard terminal and does not support Redcap.

[0007] In some embodiments, the step of identifying a Redcap cell within a target range through an XN process includes: Add a field parameter to query whether Redcap terminal switching is supported in the standard signaling of the XN process; Based on the added field parameters, the Redcap cells within the target range are identified; that is, through resource status request and resource status response, whether the surrounding neighboring cells support Redcap terminal switching is queried, and through resource status update signaling, whether the Redcap terminal switching information is allowed is periodically updated to the source cell.

[0008] In some embodiments, the connection state movement includes: redirection and switching.

[0009] If the 4G cell is configured with a handover policy, the Redcap terminal is handed over from the 4G cell to the 5G cell through the normal process; If the 4G cell is configured with a blind redirection strategy, the frequency and PCI are directly extracted from the Redcap neighbor list obtained by the XN process query, and the 5G cell with the largest handover traffic with the 4G cell is selected, and then the RRC release signaling carrying the frequency and PCI information is sent to the Redcap terminal; If the 4G base station is configured with a measurement redirection strategy, the Redcap neighbor list frequency saved in the XN process is checked based on the reported cell PCI information, and then the RRC release signaling carrying the frequency and PCI information is sent to the Redcap terminal; By using the 4G capability field to determine whether a terminal supports Redcap, some terminals may be mistakenly identified as Redcap terminals and may not be able to switch to 5G cells that support Redcap. The original 4G cell will delete the special measurement reconfiguration for these abnormal terminals and re-issue the regular measurement reconfiguration, allowing them to move to regular 5G cells through regular switching or redirection.

[0010] In some embodiments, the modifying the conventional measurement reconfiguration in the target terminal to a special measurement reconfiguration includes: Sending a first measurement reconfiguration signaling to the target terminals to delete the conventional measurement configuration information of these terminals; The second measurement reconfiguration signaling is sent to the target terminal to configure special measurement reconfiguration for it. The information carried includes but is not limited to the list of neighbor cells that allow the Redcap terminal to switch and other measurement configuration parameters (measurement events, frequency points, PCI, Redcap identification, etc.).

[0011] According to the second aspect of the present application, the present application also provides a device for improving the success rate of Redcap terminal mobility in high traffic scenarios, including: The identification module is used to determine whether the terminal within the target range supports Redcap through UE capability signaling; and to identify the Redcap cell within the target range through the XN process; A modification module, used for modifying the conventional measurement reconfiguration in the target terminal to a special measurement reconfiguration; the target terminal is a terminal supporting Redcap; The mobile module is used to move the Redcap terminal connection state for the terminal supporting Redcap; The special measurement reconfiguration carries a list of neighboring cells that allow the Redcap terminal to switch and other measurement configuration parameters.

[0012] According to the third aspect of the present application, the present application further provides an electronic device, including: A processor, and a memory for storing a program executable by the processor; The processor is used to implement the method for improving the mobility success rate of Redcap terminals in high-traffic scenarios as described in any one of the first aspects of the present application by running the program in the memory.

[0013] According to the fourth aspect of the present application, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the processor executes a method for improving the mobility success rate of Redcap terminals in high-traffic scenarios as described in any one of the first aspect of the present application.

[0014] According to the fifth aspect of the present application, the present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the method for improving the success rate of Redcap terminal mobility in high-traffic scenarios as described in any one of the first aspect of the present application.

[0015] The present application provides a method for improving the success rate of Redcap terminal mobility in high-traffic scenarios. First, the UE capability signaling is used to query whether the terminal within the target range supports Redcap; the Redcap cell within the target range is identified through the XN process; the conventional measurement reconfiguration in the target terminal is modified to a special measurement reconfiguration; the target terminal is a terminal that supports Redcap; for the terminal that supports Redcap, the Redcap terminal is moved in a connected state; wherein the special measurement reconfiguration carries a list of neighboring cells that allow the Redcap terminal to switch and other measurement configuration parameters. In this way, before the connected state movement is performed, it is ensured that the corresponding terminal supports Redcap to avoid the ping-pong effect and improve the success rate of the Redcap terminal's connected state mobility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 It is a flowchart of a method for improving the success rate of Redcap terminal mobility in high-traffic scenarios provided by an embodiment of the present application.

[0018] Figure 2 It is a partial flow chart of a method provided by an embodiment of the present application.

[0019] Figure 3 It is a structural diagram of a device for improving the success rate of Redcap terminal mobility in high-traffic scenarios provided by an embodiment of the present application.

[0020] Figure 4 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Exemplary Methods Figure 1 FIG. 1 is a flow chart of a method for improving the success rate of Redcap terminal mobility in high traffic scenarios provided by an embodiment of the present application. Figure 1As shown, the method includes the following contents.

[0023] Step S110, whether the terminal in the target range supports Redcap through UE capability signaling; Specifically, when a terminal occupies a 4G base station, it is impossible to identify whether the terminal has Redcap capability through UE capability signaling. However, it can be judged based on the 4G capability field in the UE capability information. If the 4G capability field of a multi-mode terminal supports up to Cat4, the terminal is determined to be a Redcap terminal; if the 4G capability field of a multi-mode terminal supports up to Cat6, the terminal is identified as a 5G NR standard terminal, that is, it does not support Redcap. This identification method is based on the general rules of 4G capabilities of most 5G terminals on the market, which helps 4G base stations quickly and accurately determine the terminal type.

[0024] Step S120, identifying the Redcap cells within the target range through the XN process; In the existing standard signaling of the XN process (resource status request, resource status response, resource status update), a new field parameter is added to query whether Redcap terminal switching is supported. The original protocol only stipulates measurement parameters such as querying and reporting wireless resource status. The addition of this field provides a basis for identifying Redcap cells.

[0025] The source base station (4G base station) and the surrounding base stations (5G base stations) use the XN process to query whether the neighboring base stations support Redcap terminal switching through the two signalings of resource status request and resource status response. At the same time, the resource status request requires the surrounding base stations to periodically send information on whether Redcap terminal switching is supported, and pass this information to the source base station in a timely manner through resource status update signaling. Based on the information obtained, the source base station generates a list of neighboring areas that allow Redcap terminal switching, and updates the list in real time based on the resource status update signaling to ensure the timeliness and accuracy of the information.

[0026] Step S130, modifying the conventional measurement reconfiguration in the target terminal to a special measurement reconfiguration; the target terminal is a terminal supporting Redcap; First, measurement reconfiguration signaling is sent to these terminals. The purpose of this signaling is to delete the original conventional measurement configuration information of the terminal, including measurement events, frequency points, etc. This step is to prepare for the subsequent configuration of special measurement reconfiguration to avoid interference of conventional configuration on the optimization process.

[0027] The 4G base station sends the measurement reconfiguration signaling to the Redcap terminal again, this time carrying a special measurement configuration. The special measurement configuration includes a list of neighboring cells that the Redcap terminal is allowed to switch to, as well as other measurement configuration parameters, such as measurement events, frequency points, PCI (physical cell identifier), Redcap identifier, etc. These parameters provide a more accurate and more demand-oriented measurement basis for the Redcap terminal when performing network switching or redirection.

[0028] The special measurement reconfiguration carries a list of neighboring cells that allow the Redcap terminal to switch and other measurement configuration parameters.

[0029] In this way, before performing connected state mobility, ensure that the corresponding terminal supports Redcap to avoid ping-pong effect and improve the success rate of Redcap terminal connected state mobility.

[0030] Step S140, for a terminal supporting Redcap, performing Redcap terminal connection state movement; Specifically, the connection state movement includes: redirection and switching.

[0031] In mobile communication systems, connected mobility is crucial to ensuring the continuity and stability of user communications. Redirection and switching are the two main modes of connected mobility. The following is a detailed explanation of these two mobility modes in the Redcap terminal scenario: Redirection Concept: Redirection is a relatively lightweight connected mobility method, mainly used to guide the terminal to move from the current serving cell to another target cell. When the base station determines that the terminal needs to move to another cell but does not need to perform a complex handover process, the redirection method is used.

[0032] Features and optimization of Redcap terminal redirection Improved RRC release signaling: In traditional redirection, RRC (Radio Resource Control) release signaling usually only carries the frequency information of the target cell. However, for Redcap terminals, in order to improve the redirection success rate, the improved RRC release signaling will carry both frequency and PCI (Physical Cell Identifier) ​​information. In this way, the terminal can more accurately identify the target cell, reduce the search and access time, and improve the accuracy and efficiency of redirection.

[0033] Blind and measured redirects Blind redirection: The base station directly extracts the frequency and PCI information from the previously saved neighboring cell list that allows the Redcap terminal to switch. It gives priority to switching to the 5G base station cell with the largest traffic volume with the current 4G base station cell, and then sends the RRC release signaling carrying the frequency and PCI information to the Redcap terminal. The terminal directly tries to access the target cell based on this information without additional measurements.

[0034] Measurement redirection: The terminal first measures the surrounding cells and reports the measurement results (such as the PCI information of the cell) to the base station. The base station searches the saved neighboring cell list based on the PCI information reported by the terminal, obtains the corresponding frequency information, and then sends the RRC release signaling carrying the frequency and PCI information to the terminal to guide the terminal to access the target cell.

[0035] Handover Concept: Handover refers to the process in which the communication link is smoothly transferred from the source cell to the target cell when the terminal moves from one cell to another while maintaining a connection with the network. Handover usually involves more complex signaling interaction and resource allocation to ensure communication continuity and service quality.

[0036] Features and advantages of Redcap terminal switching Conventional switching process application: If the 4G base station is configured with a switching strategy, the Redcap terminal will switch from the 4G base station to the 5G base station according to the conventional switching process. Since the Redcap capability of the terminal has been identified through the 4G UE capability signaling, the cell supporting Redcap has been identified through the XN process, and the measurement reconfiguration of the terminal has been modified, the terminal can more accurately select the target cell during the switching process, avoiding some unnecessary failures, thereby significantly improving the switching success rate.

[0037] Ensure communication continuity: During the switching process, the network will allocate resources to the terminal in the target cell in advance to ensure that the terminal can resume communication immediately after switching to the target cell, reduce the time of communication interruption, and provide users with a smoother communication experience. For example, when a Redcap terminal moves from a 4G cell with a smaller coverage area to a 5G Redcap cell with a larger coverage area and stronger signal, the switching can ensure that the terminal's data transmission will not be interrupted and various services can continue to be used normally.

[0038] Specifically, if the 4G cell is configured with a handover policy, the Redcap terminal is handed over from the 4G cell to the 5G cell through a conventional process; If the 4G cell is configured with a blind redirection strategy, the frequency and PCI are directly extracted from the Redcap neighbor list obtained by the XN process query, and the 5G cell with the largest handover traffic with the 4G cell is selected, and then the RRC release signaling carrying the frequency and PCI information is sent to the Redcap terminal; If the 4G base station is configured with a measurement redirection strategy, the Redcap neighbor list frequency saved in the XN process is checked based on the reported cell PCI information, and then the RRC release signaling carrying the frequency and PCI information is sent to the Redcap terminal; The method of judging whether a terminal supports Redcap by the 4G capability field may cause some terminals to be mistakenly identified as Redcap terminals and may not be able to switch to a 5G cell that supports Redcap. The original 4G cell will delete the special measurement reconfiguration for these abnormal terminals and re-issue the regular measurement reconfiguration, allowing them to move to the regular 5G cell through regular switching or redirection; In some embodiments, the method of identifying whether the terminal within the target range has Redcap capability through UE capability signaling includes: identifying whether the terminal supports both R17 version and Redcap through the Redcap field carried in the UE capability information; if supported, recording it as a Redcap terminal; if not, judging whether the terminal supports Redcap through the 4G capability field in the UE capability information.

[0039] Specifically, in a 5G network, the terminal equipment (UE) will send UE capability information to the base station, which may carry the Redcap field. Redcap (Reduced Capability) is a function designed for some devices with lower capability requirements in 5G technology. R17 is a specific version of the 5G standard, which begins to support the Redcap function.

[0040] If there is a corresponding mark in the Redcap field of the UE capability information, the base station can use this field to identify whether the terminal supports both the R17 version and the Redcap capability. When the terminal meets both conditions, it can work normally in a 5G network environment that supports Redcap. For example, some low-speed, low-power IoT devices, if they support the R17 version and the Redcap field has a corresponding mark, can access the network in Redcap mode, thereby saving power consumption and cost.

[0041] Specifically, the method of judging whether the terminal supports Redcap through the 4G capability field in the UE capability information includes: if the 4G capability field of the terminal supports Cat4 at most, then judging that the terminal supports Redcap; if the 4G capability field of the multi-mode terminal supports Cat6 at least, then judging that the terminal is a 5G NR standard terminal and does not support Redcap.

[0042] When the UE occupies the 4G network, if there is no Redcap field in the UE capability information, it is impossible to determine whether the terminal supports Redcap through this field. The base station can make a judgment based on the 4G capability field in the UE capability information. This is a judgment method designed based on the characteristics of most terminal devices on the market.

[0043] The terminal's 4G capability supports up to Cat4: Cat (Category) indicates the capability level of the terminal. In a 4G network, different Cat levels represent different data transmission capabilities of the terminal. When the terminal's 4G capability field shows that it supports up to Cat4, it means that the terminal's data transmission capability is relatively low. This type of terminal is usually designed to meet some application scenarios that do not require high data rates, which is consistent with the characteristics of low-capability devices targeted by Redcap, so it can be determined that the terminal supports Redcap. For example, some simple smart sensor devices only need to transmit a small amount of data occasionally. Such devices may support up to Cat4 in terms of 4G capabilities, and are also suitable for accessing 5G networks in Redcap mode.

[0044] Multi-mode terminal 4G capability supports at least Cat6: If the 4G capability field of a multi-mode terminal (which can support multiple network modes at the same time, such as 4G and 5G) shows that it supports at least Cat6, it means that the terminal has a high data transmission capability. Such high-capability terminals are often designed according to the 5G NR (New Radio) standard and have stronger communication capabilities and performance, so they are judged as 5G NR standard terminals and do not support Redcap. For example, some high-end smartphones, which usually have high 4G capabilities, prefer to use the 5G NR standard for high-speed data transmission rather than the Redcap mode.

[0045] The method of identifying the Redcap cell within the target range through the XN process includes: adding a field parameter to query whether the Redcap terminal switching is supported in the standard signaling of the XN process; identifying the Redcap cell within the target range based on the added field parameter, that is, querying whether the surrounding neighboring cells support the Redcap terminal switching through resource status request and resource status response, and periodically updating the information of whether the Redcap terminal switching is allowed to the source cell through resource status update signaling. The details are as follows: (1) Add field parameters to the XN process standard signaling The XN interface is the interface between 5G base stations. The XN process is a series of standard processes for information exchange between base stations, which are used to achieve collaborative work and resource management between base stations. In the original XN process standard signaling, there is no field specifically used to query whether Redcap terminal switching is supported. In order to be able to identify which cells in the target range support Redcap terminal switching, it is necessary to add corresponding query field parameters in the standard signaling of the XN process.

[0046] For example, a field "whether Redcap terminal switching is supported" is added to the signaling such as resource status request and resource status response. This field can use a Boolean value (such as "yes" or "no") to indicate whether the cell supports the switching operation of Redcap terminals. In this way, when the base station is performing information exchange, it can obtain information about the Redcap support status of the cell through this newly added field.

[0047] (2) Identify Redcap cells based on added field parameters When the field parameters for querying whether Redcap terminal switching is supported are added to the standard signaling of the XN process, the source base station (such as a 4G base station) can interact with surrounding base stations (such as a 5G base station) and use these newly added field parameters to identify the Redcap cells within the target range.

[0048] The source base station sends a resource status request signaling with a newly added query field to the surrounding base stations. After receiving the request, the surrounding base stations fill in the value of the field (supported or not supported) in the resource status response signaling according to the actual situation of their own cells and return it to the source base station. Based on the received response signaling, the source base station can clearly identify which surrounding cells support Redcap terminal switching, thereby identifying these cells as Redcap cells and recording the relevant information for subsequent terminal switching or redirection operations. For example, the source base station can generate a list of neighboring cells that allow Redcap terminal switching based on this information, so as to guide the Redcap terminal to switch to a supported cell at the appropriate time.

[0049] Through resource status update signaling, whether to allow the Redcap terminal to switch information to the source cell is periodically updated, and the periodic update parameters can be flexibly configured according to needs. For example, 10 minutes, 30 minutes, etc.; In some embodiments, the modifying the conventional measurement reconfiguration in the target terminal to a special measurement reconfiguration includes: A first measurement reconfiguration signaling is sent to the target terminal to delete the conventional measurement configuration information of these terminals; and a second measurement reconfiguration signaling is sent to the target terminal to configure special measurement reconfiguration for the target terminal.

[0050] In mobile communication systems, terminals (UE) usually measure surrounding cells based on the measurement configuration information sent by the base station, so as to switch or redirect cells at the right time, thereby ensuring the continuity and stability of communication. Conventional measurement configuration is suitable for general terminals. However, for Redcap (Reduced Capability) terminals, their communication capabilities and usage scenarios are different. Conventional measurement configuration may not be optimal and may even bring additional signaling overhead and power consumption. Therefore, it is necessary to modify the conventional measurement reconfiguration of the target terminal (terminal supporting Redcap) to special measurement reconfiguration to optimize the mobility management of Redcap terminals.

[0051] 1. Send a first measurement reconfiguration signaling to the target terminals to delete the conventional measurement configuration information of these terminals.

[0052] Signaling function: The core function of the first measurement reconfiguration signaling is to delete the current conventional measurement configuration information of the target terminal. Conventional measurement configuration information generally covers measurement frequency, measurement events (such as A1 - A6 events, which are used to describe different measurement trigger conditions), measurement cycle, etc.

[0053] Specific operation: The base station sends a first measurement reconfiguration message to the target terminal through radio resource control (RRC) signaling, and the message clearly instructs the terminal to delete the existing regular measurement configuration.

[0054] Purpose: This is to clear old, possibly inapplicable measurement configurations to prevent them from interfering with subsequent special measurement configurations. At the same time, it can also reduce unnecessary measurement work for the terminal, reduce power consumption of the terminal, and prepare for receiving and executing special measurement configurations.

[0055] 2. Send a second measurement reconfiguration signaling to the target terminal to configure special measurement reconfiguration for it.

[0056] Signaling content: The second measurement reconfiguration signaling carries special measurement reconfiguration information, mainly including the neighboring cell list that allows the Redcap terminal to switch and other measurement configuration parameters. The neighboring cell list specifies which surrounding cells are available for the Redcap terminal to switch, and other measurement configuration parameters may be optimized according to the characteristics of the Redcap terminal, such as adjusting the measurement cycle, relaxing the measurement event triggering conditions, etc.

[0057] Specific operation: The base station also sends a second measurement reconfiguration message to the target terminal through RRC signaling, and the message includes detailed content of the special measurement reconfiguration.

[0058] Purpose and significance: To configure measurement reconfiguration for the target terminal that is suitable for its capabilities and usage scenarios. Special measurement reconfiguration enables Redcap terminals to measure surrounding cells more specifically, improve measurement efficiency and accuracy, and thus increase the mobility success rate of Redcap terminals in the connected state and ensure communication quality.

[0059] Example description: Assume that in the high-traffic scenario test area, multiple Redcap terminals are in the 4G network coverage area and are transmitting data. After the base station identifies certain terminals as target terminals that support Redcap, it first sends the first measurement reconfiguration signaling. After receiving the signaling, the terminal deletes the original conventional measurement configuration for all surrounding 4G and 5G cells. Then, the base station sends the second measurement reconfiguration signaling, in which the neighboring cell list only contains 5G cells that support Redcap switching. The terminal only measures these specific 5G cells based on the new special measurement reconfiguration. When the terminal detects that the signal quality of a 5G cell meets the conditions, it can switch more smoothly, avoiding resource waste and switching failure caused by measuring cells that do not support Redcap.

[0060] The following is a further explanation of the method provided by the present application in combination with the above-mentioned preferred embodiments: The present invention proposes a method for improving the mobility success rate of Redcap terminals in high-traffic scenarios. The main idea is that the 4G base station first identifies the Redcap capability of the terminal in the coverage area, and queries the cells that support Redcap through the XN interface. Secondly, the regular measurement configuration is deleted for the Redcap terminal and a special measurement configuration is issued. If the terminal switches from 4G to 5G, the existing regular process is reused. If the terminal is redirected from 4G to 5G, an optimized version of the redirection process is executed. The above measures can effectively improve the mobility success rate of Redcap terminals from 4G to 5G, effectively reduce the signaling load of the source cell and the surrounding cells, and effectively improve the perception of Redcap terminals. Reference Figure 2 , first of all, in the method provided by this application: 4G base stations identify terminal Redcap capabilities through UE capability signaling.

[0061] The 4G base station determines whether the terminal supports Redcap through the 4G capability field in the UE capability information. If the 4G capability field of the multi-mode terminal supports up to Cat4, the terminal is determined to be a Redcap terminal. If the 4G capability field of the multi-mode terminal supports up to Cat6, the terminal is determined to be a 5G NR standard terminal. The 4G capabilities of most 5G terminals on the market basically conform to this rule.

[0062] The 4G base station identifies the Redcap cell through the XN process.

[0063] The protocol only specifies the query and reporting of measurement parameters such as wireless resource status, hardware resource status, transmission resource status, and available capacity status for resource status request, resource status response, and resource status update. This time, the field parameters for querying whether Redcap terminal switching is supported are added to these standard signaling. The source base station (4G base station) and the surrounding base stations (5G base stations) query whether the neighboring cells of the surrounding base stations support Redcap terminal switching through the XN process, namely the resource status request and resource status response in the above figure. At the same time, in the resource status request, the surrounding base stations are required to periodically send information on whether Redcap terminal switching is supported, and update the information to the source base station in a timely manner through the resource status update signaling. The above periodic query time can be flexibly configured according to actual needs. The source base station generates a list of neighboring cells that allow Redcap terminal switching based on the information on whether the neighboring cells support Redcap terminal switching obtained by the query, and updates the list of neighboring cells for Redcap terminal switching based on the resource status update signaling.

[0064] 4G base station deletes regular measurement reconfiguration & issues special measurement reconfiguration.

[0065] For the identified Redcap terminals, the 4G base station first sends measurement reconfiguration signaling to delete the regular measurement configuration information (measurement events, frequency points, etc.) of these terminals.

[0066] For the identified Redcap terminal, the 4G base station sends the measurement reconfiguration signaling again, carrying the list of neighboring cells allowed to switch the Redcap terminal and other measurement configuration parameters (measurement events, frequency, PCI, Redcap identification and other information).

[0067] After the terminal reports the measurement event, the Redcap terminal switches / redirects from the 4G base station to the 5G base station.

[0068] If the 4G base station is configured with a switching strategy, the Redcap terminal is switched from the 4G base station to the 5G base station through a conventional process. In the method provided by the present application, the switching success rate will be greatly improved compared with the conventional switching method of the existing network.

[0069] If the 4G base station is configured with a redirection strategy, an improved version of the RRC release signaling is sent. The current protocol stipulates that the RRC release signaling only carries the frequency point, while the improved version of the RRC release signaling carries not only the frequency point but also the PCI information, which will greatly improve the redirection success rate.

[0070] For the blind redirection strategy, the frequency and PCI are directly extracted from the saved neighboring cell list, and the 5G base station cell with the largest handover business volume with the 4G base station cell is preferentially selected, and then the RRC release signaling carrying the frequency and PCI information is sent to the Redcap terminal.

[0071] For the measurement redirection strategy, according to the reported cell PCI information, the frequency of the saved neighboring cell list is checked, and then the RRC release signaling carrying the frequency and PCI information is sent to the Redcap terminal.

[0072] In some embodiments, by judging the 4G capability field, individual terminals may be mistakenly identified as Redcap terminals and may not be able to switch to a 5G base station cell that supports Redcap. The base station will delete the special measurement configuration for these terminals and re-issue the regular measurement reconfiguration, allowing them to move to the 5G base station cell through regular switching or redirection.

[0073] Exemplary Devices The device embodiments of the present application can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0074] Figure 3 FIG. 1 is a block diagram of a device for improving the success rate of Redcap terminal mobility in high traffic scenarios provided by an embodiment of the present application. Figure 3 As shown, the device comprises: The identification module 31 is used to determine whether the terminal within the target range supports Redcap through UE capability signaling; and identify the Redcap cell within the target range through the XN process; A modification module 32, used to modify the conventional measurement reconfiguration in the target terminal to a special measurement reconfiguration; the target terminal is a terminal supporting Redcap; A mobile module 33 is used to move a terminal supporting Redcap in a Redcap terminal connection state; The special measurement reconfiguration carries a list of neighboring cells that allow the Redcap terminal to switch and other measurement configuration parameters.

[0075] Exemplary Electronic Devices Below, reference Figure 4 To describe an electronic device according to an embodiment of the present application. Figure 4 A block diagram of an electronic device according to an embodiment of the present application is illustrated.

[0076] like Figure 4 As shown, electronic device 400 includes one or more processors 410 and memory 420 .

[0077] The processor 410 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 400 to perform desired functions.

[0078] The memory 420 may include one or more computer program products, and the computer program product may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 410 may run the program instructions to implement the method for improving the mobility success rate of Redcap terminals in high-traffic scenarios and / or other desired functions of the various embodiments of the present application described above. Various contents such as category correspondences may also be stored in the computer-readable storage medium.

[0079] In one example, the electronic device 400 may further include: an input device 430 and an output device 440 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0080] In addition, the input device 430 may also include, for example, a keyboard, a mouse, an interface, etc. The output device 440 may output various information to the outside, including analysis results, etc. The output device 440 may include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, etc.

[0081] Of course, to simplify, Figure 4 Only some of the components in the electronic device related to the present application are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, the electronic device may further include any other appropriate components according to specific application conditions.

[0082] Exemplary computer program products and computer-readable storage media In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the method for improving the mobility success rate of Redcap terminals in high-traffic scenarios according to various embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0083] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0084] In addition, an embodiment of the present application may also be a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, enables the processor to execute the steps of the method for improving the mobility success rate of Redcap terminals in high-traffic scenarios according to various embodiments of the present application described in the above “Exemplary Method” section of this specification.

[0085] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0086] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A method for improving the success rate of Redcap terminal mobility in high traffic scenarios, characterized in that: include: Use UE capability signaling to query whether the terminals within the target range support Redcap; Identify the Redcap cells within the target range through the XN process; Modify the conventional measurement reconfiguration in the target terminal to special measurement reconfiguration; the target terminal is a terminal supporting Redcap; For terminals that support Redcap, move the Redcap terminal in connection state; The special measurement reconfiguration carries a list of neighboring cells that allow the Redcap terminal to switch and other measurement configuration parameters.

2. The method for improving the success rate of Redcap terminal mobility in high traffic scenarios according to claim 1, characterized in that: The querying of whether the terminal within the target range has Redcap capability through UE capability signaling includes: The Redcap field carried in the UE capability information is used to identify whether the terminal supports both R17 version and Redcap; if supported, it is recorded as a Redcap terminal; if not, the 4G capability field in the UE capability information is used to determine whether the terminal supports Redcap.

3. The method for improving the success rate of Redcap terminal mobility in high traffic scenarios according to claim 2 is characterized in that: The determining whether the terminal supports Redcap by the 4G capability field in the UE capability information includes: If the 4G capability field of the terminal supports Cat4 at most, it is determined that the terminal supports Redcap; If the 4G capability field of the multi-mode terminal supports at least Cat6, then the terminal is judged to be a 5G NR standard terminal and does not support Redcap.

4. The method for improving the success rate of Redcap terminal mobility in high traffic scenarios according to claim 1, characterized in that: The method of identifying the Redcap cell within the target range through the XN process includes: Add a field parameter to query whether Redcap terminal switching is supported in the standard signaling of the XN process; Based on the added field parameters, the Redcap cells within the target range are identified, that is, through resource status request and resource status response, whether the surrounding neighboring cells support Redcap terminal switching is queried through resource status update signaling, and whether Redcap terminal switching is allowed is periodically updated to the source cell.

5. The method for improving the success rate of Redcap terminal mobility in high traffic scenarios according to claim 1, characterized in that: The modifying of the conventional measurement reconfiguration in the target terminal into the special measurement reconfiguration includes: Sending a first measurement reconfiguration signaling to the target terminals to delete the conventional measurement configuration information of these terminals; A second measurement reconfiguration signaling is sent to the target terminal to configure special measurement reconfiguration for it; the special measurement reconfiguration carries information including but not limited to allowing the Redcap terminal to switch neighbor cell lists and other measurement configuration parameters.

6. The method for improving the success rate of Redcap terminal mobility in high traffic scenarios according to claim 1, characterized in that: The connection state movement includes: redirection and switching.

7. A device for improving the success rate of Redcap terminal mobility in high traffic scenarios, characterized in that: include: An identification module is used to query whether the terminal within the target range supports Redcap through UE capability signaling; Identify the Redcap cells within the target range through the XN process; A modification module, used for modifying the conventional measurement reconfiguration in the target terminal to the special measurement reconfiguration; The target terminal is a terminal supporting Redcap; The mobile module is used to move the Redcap terminal in a connected state for a terminal supporting Redcap; wherein the special measurement reconfiguration carries a list of neighboring cells that allow the Redcap terminal to switch and other measurement configuration parameters.

8. An electronic device, characterized in that: include: A processor, and a memory for storing a program executable by the processor; The processor is used to implement the method for improving the mobility success rate of Redcap terminals in high-traffic scenarios as described in any one of claims 1 to 6 by running the program in the memory.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the processor executes the method for improving the mobility success rate of Redcap terminals in high-traffic scenarios according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the computer program implements the method for improving the mobility success rate of Redcap terminals in high traffic scenarios according to any one of claims 1 to 6.

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