Information recording method and apparatus, information receiving method and apparatus, terminal, network device, and storage medium

Abstract

The present disclosure relates to the technical field of communications, and specifically to an information recording method and apparatus, an information receiving method and apparatus, a terminal, a network device, and a storage medium. The information recording method comprises: when a radio link failure (RLF) or a handover failure occurs, recording mobility LTM information triggered by Layer 1 or Layer 2. According to the present disclosure, a terminal can record LTM information in the event of an RLF or a handover failure, so that the LTM information can be subsequently sent to a network device according to requirements or a network device request. Compared with the terminal recording RLF- and handover failure-related information in the case of an RLF or a handover failure, the LTM information can be used for the network device to accurately determine an LTM-related status of the terminal, helping to ensure that the network device can promptly and accurately determine, on the basis of the LTM information, whether to execute LTM, adjust LTM configurations and perform other operations.

Description

Information recording, receiving method and device, terminal, network equipment and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to an information recording method, an information receiving method, an information recording device, an information receiving device, a terminal, a network device, a communication system, and a storage medium. Background Art

[0002] In a wireless network environment, a terminal can perform a handover (HO) between cells. When a handover fails or a radio link failure (RLF) occurs in a serving cell, the terminal can record information related to the handover failure or RLF in an RLF report and send it to the network device. The network device can then perform appropriate actions based on the information reported by the terminal to ensure communication quality between the network device and the terminal. However, there are still some technical issues that need to be resolved regarding the terminal's recording of information in the RLF report.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide information recording and receiving methods and devices, terminals, network devices, and storage media to solve technical problems in related technologies.

[0005] According to a first aspect of an embodiment of the present disclosure, an information recording method is proposed, which is executed by a terminal. The method includes: when a radio link failure or a handover failure occurs, recording mobility LTM information triggered by layer 1 or layer 2.

[0006] According to the second aspect of an embodiment of the present disclosure, a method for receiving information is proposed, which is executed by a network device. The method includes: receiving layer 1 or layer 2 triggered mobility LTM information sent by a terminal, wherein the LTM information is recorded when a wireless link failure or a switching failure occurs at the terminal.

[0007] According to a third aspect of an embodiment of the present disclosure, an information recording device is proposed, comprising: a processing module configured to record mobility LTM information triggered by layer 1 or layer 2 in response to a radio link failure or a handover failure.

[0008] According to the fourth aspect of an embodiment of the present disclosure, an information receiving device is proposed, which is executed by a network device, and the device includes: a receiving module, configured to receive layer 1 or layer 2 triggered mobility LTM information sent by a terminal, wherein the LTM information is recorded when a wireless link failure or a switching failure occurs at the terminal.

[0009] According to a fifth aspect of the embodiments of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is used to execute the information recording method described in any one of the first aspect and the optional embodiments of the first aspect.

[0010] According to a sixth aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; wherein the network device is used to execute the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0011] According to the seventh aspect of the embodiments of the present disclosure, a communication system is proposed, including a terminal and a network device, wherein the terminal is configured to implement the information recording method described in any one of the first aspect and the optional embodiments of the first aspect, and the network device is configured to implement the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0012] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the information recording method described in any one of the first aspect and the optional embodiments of the first aspect, and / or the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0013] According to an embodiment of the present disclosure, a terminal can record LTM information in the event of a radio link failure or handover failure, so that the LTM information can be subsequently sent to a network device as needed or requested by the network device. While the terminal records information related to RLF and handover failure in the event of a radio link failure or handover failure, LTM information can be used by the network device to accurately determine the terminal's LTM status, thereby ensuring that the network device can promptly and accurately execute operations such as whether to perform LTM and whether to adjust the LTM configuration based on the LTM information. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0016] FIG2 is an interactive schematic diagram illustrating an information recording method according to an embodiment of the present disclosure.

[0017] FIG3 is a schematic flow chart of an information recording method according to an embodiment of the present disclosure.

[0018] FIG4 is a schematic flowchart showing a method for receiving information according to an embodiment of the present disclosure.

[0019] FIG5 is a schematic block diagram showing an information recording device according to an embodiment of the present disclosure.

[0020] FIG6 is a schematic block diagram of an information receiving device according to an embodiment of the present disclosure.

[0021] FIG7A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0022] FIG7B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure provide information recording and receiving methods and devices, terminals, network devices, and storage media.

[0024] In a first aspect, an embodiment of the present disclosure proposes an information recording method, which is executed by a terminal. The method includes: when a radio link failure or a handover failure occurs, recording mobility LTM information triggered by layer 1 or layer 2.

[0025] In the above embodiment, the terminal can record LTM information in the event of a radio link failure or handover failure, so that the LTM information can be subsequently sent to the network device upon demand or upon request from the network device. While the terminal records information related to RLF and handover failure in the event of a radio link failure or handover failure, LTM information can be used by the network device to accurately determine the terminal's LTM status. This helps ensure that the network device can promptly and accurately determine whether to perform LTM or adjust the LTM configuration based on the LTM information.

[0026] In combination with some embodiments of the first aspect, in some embodiments, the LTM information includes at least one of the following: a cell identity based on LTM recovery; an LTM measurement result of a neighboring cell; LTM information related to the radio link failure; LTM information related to the handover failure; and a reconstructed cell identity.

[0027] In combination with some embodiments of the first aspect, in some embodiments, the information recording method further includes: sending indication information to a network device, wherein the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

[0028] In combination with some embodiments of the first aspect, in some embodiments, the LTM measurement result includes at least one of the following: an L1 measurement result; or an L3 measurement result.

[0029] In combination with some embodiments of the first aspect, in some embodiments, the LTM measurement results of the neighboring cells include LTM measurement results of a first cell, wherein the first cell includes at least one of the following: a cell among the neighboring cells that meets the first condition; or a cell among the neighboring cells that does not meet the first condition.

[0030] In combination with some embodiments of the first aspect. In some embodiments, the first condition includes at least one of the following: the relationship between the offset of the LTM measurement result of the first cell relative to the corresponding measurement result of the second cell and the first threshold satisfies a first predefined relationship; the relationship between the LTM measurement result of the first cell and the second threshold satisfies a second predefined relationship.

[0031] In combination with some embodiments of the first aspect, the second cell includes at least one of the following: a current serving cell of the terminal, a cell where the radio link failure occurs, a cell where the handover failure occurs, and an LTM candidate cell.

[0032] In combination with some embodiments of the first aspect. In some embodiments, the LTM information related to the radio link failure includes at least one of the following: first time information, wherein the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the radio link failure; the type of cell handover performed by the terminal before the radio link failure; and information of LTM candidate cells.

[0033] In combination with some embodiments of the first aspect. In some embodiments, the LTM information related to the handover failure includes at least one of the following: second time information, wherein the second time information is used to indicate the time interval from the terminal receiving the LTM configuration to the handover failure; the type of cell handover performed by the terminal before the handover failure; and information of LTM candidate cells.

[0034] In combination with some embodiments of the first aspect, in some embodiments, the LTM candidate cell does not include a neighboring cell corresponding to the LTM measurement result.

[0035] In combination with some embodiments of the first aspect, in some embodiments, the information recording method further includes: sending the LTM information to a network device.

[0036] In combination with some embodiments of the first aspect. In some embodiments, the information recording method further includes: sending capability information to the network device, wherein the capability information is used to indicate at least one of the following: whether the terminal supports recording LTM information related to wireless link failure or handover failure; whether the terminal sends LTM information related to wireless link failure or handover failure.

[0037] In the second aspect, an embodiment of the present disclosure proposes an information receiving method, which is executed by a network device, and the method includes: receiving layer 1 or layer 2 triggered mobility LTM information sent by a terminal, wherein the LTM information is recorded when a wireless link failure or a switching failure occurs in the terminal.

[0038] In combination with some embodiments of the second aspect, in some embodiments, the LTM information includes at least one of the following: a cell identity based on LTM recovery; an LTM measurement result of a neighboring cell; LTM information related to the radio link failure; LTM information related to the handover failure; and a reconstructed cell identity.

[0039] In combination with some embodiments of the second aspect, in some embodiments, the information receiving method further comprises: receiving indication information sent by the terminal, wherein the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

[0040] In conjunction with some embodiments of the second aspect, in some embodiments, the LTM measurement result includes at least one of the following: an L1 measurement result; or an L3 measurement result.

[0041] In combination with some embodiments of the second aspect, in some embodiments, the LTM measurement results of the neighboring cells include LTM measurement results of a first cell, wherein the first cell includes at least one of the following: a cell among the neighboring cells that meets the first condition; or a cell among the neighboring cells that does not meet the first condition.

[0042] In combination with some embodiments of the second aspect. In some embodiments, the first condition includes at least one of the following: a relationship between an offset of the LTM measurement result of the first cell relative to the measurement result corresponding to the second cell and a first threshold satisfies a first predefined relationship; a relationship between the LTM measurement result of the first cell and the second threshold satisfies a second predefined relationship.

[0043] In combination with some embodiments of the second aspect, the second cell includes at least one of the following: a current serving cell of the terminal, a cell where the radio link failure occurs, a cell where the handover failure occurs, and an LTM candidate cell.

[0044] In combination with some embodiments of the second aspect. In some embodiments, the LTM information related to the radio link failure includes at least one of the following: first time information, wherein the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the occurrence of the radio link failure; the type of cell handover performed by the terminal before the radio link failure; and information of LTM candidate cells.

[0045] In combination with some embodiments of the second aspect. In some embodiments, the LTM information related to the handover failure includes at least one of the following: second time information, wherein the second time information is used to indicate the time interval from the terminal receiving the LTM configuration to the occurrence of the handover failure; the type of cell handover performed by the terminal before the handover failure; and information about LTM candidate cells.

[0046] In conjunction with some embodiments of the second aspect, in some embodiments, the information of the LTM candidate cell does not include a neighboring cell corresponding to the LTM measurement result.

[0047] In combination with some embodiments of the second aspect. In some embodiments, the information receiving method further includes: receiving capability information sent by the terminal, wherein the capability information is used to indicate at least one of the following: whether the terminal supports recording LTM information related to wireless link failure or handover failure; whether the terminal sends LTM information related to recording wireless link failure or handover failure.

[0048] In a third aspect, an embodiment of the present disclosure proposes an information recording device, comprising: a processing module configured to record mobility LTM information triggered by layer 1 or layer 2 in response to a radio link failure or a handover failure.

[0049] In the fourth aspect, an embodiment of the present disclosure proposes an information receiving device, which is executed by a network device, and the device includes: a receiving module, configured to receive layer 1 or layer 2 triggered mobility LTM information sent by a terminal, wherein the LTM information is recorded when a wireless link failure or switching failure occurs in the terminal.

[0050] In a fifth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the information recording method described in any one of the first aspect and the optional embodiments of the first aspect.

[0051] In a sixth aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the network device is used to execute the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0052] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including a terminal and a network device, wherein the terminal is configured to implement the information recording method described in any one of the first aspect and the optional embodiments of the first aspect, and the network device is configured to implement the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0053] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when the instructions are executed on a communication device, enables the communication device to execute the information recording method described in any one of the first aspect and the optional embodiments of the first aspect, and / or the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0054] In the ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the information recording method described in any one of the first aspect and the optional embodiments of the first aspect, and / or the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0055] In the tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the information recording method described in any one of the first aspect and the optional embodiments of the first aspect, and / or the information receiving method described in any one of the second aspect and the optional embodiments of the second aspect.

[0056] It is understandable that the above-mentioned information record, receiving device, communication device, communication system, storage medium, program product, and computer program are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0057] The present disclosure provides information recording and receiving methods and devices, terminals, network devices, and storage media. In some embodiments, the terms information recording and receiving methods, information processing methods, and communication methods are interchangeable; the terms information recording and receiving devices, information processing devices, and communication devices are interchangeable; and the terms information processing system and communication system are interchangeable.

[0058] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0059] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0060] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0061] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc.

[0062] For example, when using articles such as “a”, “an”, and “the” in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

[0063] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0064] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0065] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0066] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0067] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description objects, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be constituted due to the use of prefixes.

[0068] For example, if the description object is "field," the ordinal number preceding "field" in "first field" and "second field" does not restrict the position or order of the "fields." "First" and "second" do not restrict whether the modified "fields" are in the same message, nor do they restrict the order of the "first field" and "second field." For another example, if the description object is "level," the ordinal number preceding "level" in "first level" and "second level" does not restrict the priority of the "levels." For another example, the number of description objects is not restricted by the ordinal number and can be one or more. For example, in the case of "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the description object is "device," "first device" and "second device" can be the same or different devices, and their types can be the same or different. For another example, if the description object is "information," "first information" and "second information" can be the same or different information, and their content can be the same or different.

[0069] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0070] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0071] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0072] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0073] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0074] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0075] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0076] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0077] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0078] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0079] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0080] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0081] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0082] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 , wherein the network device includes at least one of the following: an access network device and a core network device.

[0083] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0084] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0085] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0086] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0087] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0088] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0089] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0090] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0091] In some embodiments, a terminal may perform a handover (HO) operation. When the terminal fails to perform the handover operation or a radio link failure (RLF) occurs in a serving cell, information related to the handover failure or RLF may be recorded in an RLF report for transmission to a network device. For example, the network device may appropriately understand the terminal's network environment based on the information reported by the terminal and then perform appropriate operations to ensure the communication quality between the network device and the terminal.

[0092] In some embodiments, the RLF report may record the measurement results of the terminal on the cell, but the measurement results do not include information related to Layer 1 or Layer 2 triggered mobility (L1 / L2-Triggered Mobility, LTM). For some scenarios, the RLF report that does not record LTM information is insufficient for the network device, making it difficult to ensure that the network device properly understands the network environment of the terminal.

[0093] For example, in an LTM scenario, the network device can configure LTM configuration information for the terminal. The LTM configuration information includes LTM candidate cells (which can be a single cell or a cell group consisting of multiple cells) and related information used for communication in the candidate cells.

[0094] The terminal can perform LTM cell switching. For example, the network device can instruct the terminal to change the cell through layer 1 (for example, through downlink control information (DCI)) or layer 2 (for example, through a media access control layer control element (MAC CE)), for example, instruct the terminal to change the cell from candidate cell #1 to candidate cell #2.

[0095] Since the relevant information used for communication in the candidate cell is pre-configured to the terminal by the network device through LTM configuration, after the terminal switches to candidate cell #2, the network device does not need to configure the relevant information used for communication in candidate cell #2 for the terminal, which is conducive to the terminal completing cell switching and communication as soon as possible.

[0096] L3-triggered mobility cell switching, such as traditional handover (HO) and conditional handover (CHO), is triggered by radio resource control (RRC) signaling. Compared with LTM cell switching, this takes longer and is not conducive to the terminal completing cell switching and communication as quickly as possible.

[0097] In the related art, the terminal can perform LTM cell switching based on the LTM configuration information configured by the network device and the switching command sent by the network device. However, the RLF report in the related art does not include LTM information, and thus cannot be accurately used by the network device to determine the terminal's LTM-related situation. Therefore, it is necessary to improve the information recorded by the terminal when a wireless link failure or switching failure occurs.

[0098] FIG2 is an interactive schematic diagram illustrating an information recording method according to an embodiment of the present disclosure.

[0099] As shown in FIG2 , the information recording method includes the following steps:

[0100] In step S201, the terminal may record the mobility LTM information triggered by layer 1 or layer 2.

[0101] In some embodiments, in response to a radio link failure or a handover failure occurring, the terminal records LTM information.

[0102] For example, the handover failure includes at least one of the following: traditional handover failure, conditional handover (CHO) failure, LTM handover failure, and DAPS (Dual Active Protocol Stack) handover.

[0103] In some embodiments, the terminal may record the LTM information in a report variable, or may record it in other ways, which is not limited by the present disclosure.

[0104] In step S202, the terminal may send LTM information to the network device.

[0105] In some embodiments, the terminal may send the LTM information to the network device through an RLF report, or may send the LTM information to the network device through other means.

[0106] In some embodiments, the terminal may send the LTM information to the network device only after receiving the request information sent by the network device.

[0107] The request information sent by the network device may reuse traditional request information (eg, a request for obtaining an RLF report), or the request information may be newly defined request information, which may be dedicated to requesting the terminal to send LTM information.

[0108] In some embodiments, the terminal may send LTM information to the network device not based on the request information of the network device. For example, the terminal may determine the time t1 for recording the LTM information. When no request information from the network device is received within the time range from t1 to T1, the terminal may automatically send the LTM information to the network device (for example, on pre-configured resources). This helps to avoid the terminal LTM information being deleted during the storage time, resulting in waste of measurement operation overhead.

[0109] In embodiments of the present disclosure, a terminal may record LTM information in the event of a radio link failure or handover failure, so that the LTM information can be subsequently transmitted to a network device upon demand or upon request from the network device. While the terminal may record information related to RLF or handover failure in the event of a radio link failure or handover failure, LTM information can be used by the network device to accurately determine the terminal's LTM status. This helps ensure that the network device can promptly and accurately determine whether to perform LTM or adjust the LTM configuration based on the LTM information.

[0110] In some embodiments, the LTM information includes at least one of the following:

[0111] Cell identity recovered based on LTM;

[0112] LTM measurement results of neighboring cells;

[0113] LTM information related to radio link failure;

[0114] LTM information related to handover failure;

[0115] Rebuild the cell ID.

[0116] In some embodiments, the LTM information may include a cell identity based on LTM recovery.

[0117] For example, when RLF or handover failure occurs in the current cell (eg, serving cell) of the terminal, the terminal may perform cell selection.

[0118] When the LTM configuration of the terminal is available, the selected cell is an LTM candidate cell in the LTM configuration, and the terminal is allowed to perform LTM based recovery, the terminal can perform recovery in the selected LTM candidate cell, for example, communicating in the selected LTM candidate cell based on the relevant information used for communication in the candidate cell. In this case, the terminal can record the identifier of the selected LTM candidate cell as the cell identifier based on LTM recovery.

[0119] When the terminal's LTM configuration is unavailable, or the selected cell is not an LTM candidate cell in the LTM configuration, or the terminal is not allowed to perform LTM-based recovery, the terminal can perform radio resource control reestablishment in the selected cell. In this case, the terminal does not need to record the cell identifier based on LTM recovery.

[0120] In some embodiments, the LTM information may include LTM measurement results of neighboring cells.

[0121] For example, when RLF or handover failure occurs in the current cell (eg, serving cell), the terminal can measure the neighboring cell to obtain the LTM measurement result of the neighboring cell, and then record the LTM measurement result of the neighboring cell as one of the LTM information.

[0122] In some embodiments, when RLF occurs, the LTM cell change (switch) configuration in the LTM configuration variable (VarLTM-Config) is available, or when the switch fails or the switch is successful, the last executed radio resource control reconfiguration (RRCReconfiguration) message including the synchronous reconfiguration (reconfigurationWithSync) is about the LTM cell change, and the terminal can use the first measurement result list (e.g., measResultListNR-r18), for example, record the LTM measurement result in the first measurement result list, otherwise, the terminal can use the second measurement result list (e.g., measResultListNR-r16), for example, record the LTM measurement result in the second measurement result list.

[0123] In some embodiments, the terminal may send indication information to the network device, where the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

[0124] For example, the neighboring cells corresponding to the LTM measurement results recorded by the terminal may include only LTM candidate cells, or may include only non-LTM candidate cells, or may include both LTM candidate cells and non-LTM candidate cells.

[0125] In the case where the neighboring cells corresponding to the LTM measurement results recorded by the terminal may include LTM candidate cells, the terminal may indicate the type of the neighboring cells corresponding to the recorded LTM measurement results, for example, through indication information, so that the network device can determine which neighboring cells corresponding to the LTM measurement results sent by the terminal are LTM candidate cells, and / or which neighboring cells corresponding to the measurement results are not LTM candidate cells.

[0126] In some embodiments, the indication information used to indicate whether a neighboring cell is an LTM candidate cell may be explicit indication information.

[0127] For example, the terminal may record LTM measurement results of n neighboring cells, and the indication information may include n bits, where the i-th bit among the n bits may be used to indicate whether the neighboring cell corresponding to the i-th LTM measurement result among the n LTM measurement results is an LTM candidate cell.

[0128] For example, the i-th bit value is 0, indicating that the i-th cell is not an LTM candidate cell, and the i-th bit value is 1, indicating that the i-th cell is not an LTM candidate cell; or, the i-th bit value is 1, indicating that the i-th cell is not an LTM candidate cell, and the i-th bit value is 0, indicating that the i-th cell is not an LTM candidate cell.

[0129] For example, when the indication information exists, it can be indicated that the neighboring cells corresponding to the measurement results corresponding to the LTM measurement results include LTM candidate cells or are all LTM candidate cells, and when the indication information exists, it can be indicated that the neighboring cells corresponding to the measurement results corresponding to the LTM measurement results do not include LTM candidate cells.

[0130] In some embodiments, the indication information may be a specific list including at least one of identification information of neighboring cells and LTM measurement results. The list may indicate that the neighboring cells corresponding to the LTM measurement results in the list are LTM candidate cells.

[0131] In some embodiments, the LTM measurement result of the neighboring cell may be achieved based on at least one of the following measurement operations: Minimization Drive Test (MDT) and Self-Organizing Network (SON).

[0132] In some embodiments, the terminal can measure the beam of the neighboring cell, for example, it can measure the synchronization broadcast signal block (SS (Synchronization Signal) and PBCH (Physical downlink Broadcast Channel) Block, SSB) in the beam. Of course, the measured signal is not limited to measuring SSB, and other signals can also be measured, such as channel state information (Channel State Information Reference Signal, CSI-RS), etc. The embodiments of the present disclosure are not limited to this.

[0133] In some embodiments, the LTM measurement result includes at least one of the following: an L1 measurement result; an L3 measurement result.

[0134] For example, when a terminal measures a signal in a cell, the signal may first be filtered through an L1 filter to obtain an L1 measurement result, and then the L1 measurement result may be input into an L3 filter to obtain an L3 filtering result.

[0135] For example, relevant parameters of the L1 filter may be determined based on UE implementation specifics.

[0136] For example, relevant parameters of the L3 filter may be determined based on Radio Resource Control (RRC) configures parameters.

[0137] For example, the measurement result corresponding to the neighboring cell may include only the measurement result of L1; for example, the measurement result corresponding to the neighboring cell may include the measurement result of L1 and the measurement result of L3; for example, the measurement result corresponding to the neighboring cell may include only the measurement result of L3.

[0138] In some embodiments, when the measurement results corresponding to the neighboring cells only include the measurement results of L1, the measurement results corresponding to the neighboring cells can be used by the network device to decide at least one of the following: whether to perform LTM, how to perform LTM (for example, on which time-frequency resources).

[0139] In some embodiments, when the measurement results corresponding to the neighboring cell include the measurement results of L1 and the measurement results of L3, the measurement results corresponding to the neighboring cell can be used by the network device to decide at least one of the following: whether to perform LTM or to perform switching based on the L3 measurement results (for example, traditional HO, CHO, etc.), how to perform LTM (for example, on which time-frequency resources), and how to perform switching based on the L3 measurement results (for example, on which time-frequency resources).

[0140] In some embodiments, when the measurement results corresponding to the neighboring cells only include L3 measurement results, the measurement results corresponding to the neighboring cells can be used by the network device to decide at least one of the following: whether switching based on the L3 measurement results is reasonable, and whether LTM is still required.

[0141] As for the measurement results corresponding to the neighboring cells, whether they specifically include the measurement results of L1, or include the measurement results of L3, or include the measurement results of L1 and L3, may be indicated by the network device or agreed upon by the protocol.

[0142] In some embodiments, the L1 measurement result and the L3 measurement result may be measurement results for the same neighboring cell (for example, the L1 measurement result is the L1 measurement result for neighboring cell #1, and the L3 measurement result is the L3 measurement result for neighboring cell #1).

[0143] In some embodiments, the L1 measurement result and the L3 measurement result may be measurement results for different neighboring cells (for example, the L1 measurement result is the L1 measurement result for neighboring cell #1, and the L3 measurement result is the L3 measurement result for neighboring cell #2).

[0144] As for whether the L1 measurement result and the L3 measurement result are measurement results for the same neighboring cell or measurement results for different neighboring cells, the terminal may determine this based on network device instructions or protocol agreements, and this disclosure does not limit this.

[0145] In some embodiments, since the L1 measurement results include physical layer measurement results, when the terminal sends LTM information to the network device through RRC signaling, the terminal can first perform internal interaction, for example, obtain the L1 measurement results from the physical layer through the RRC layer, and then send the LTM information containing the L1 measurement results to the network device through RRC signaling.

[0146] In some embodiments, the LTM measurement results of the neighboring cells include an LTM measurement result of a first cell, where the first cell includes at least one of the following:

[0147] A cell in the neighboring cells that meets the first condition;

[0148] The neighboring cells do not meet the first condition.

[0149] For example, the terminal may record LTM measurement results only for neighboring cells that meet the first condition, or may record LTM measurement results only for neighboring cells that do not meet the first condition, or may record LTM measurement results for neighboring cells that meet the first condition and do not meet the first condition (for example, all neighboring cells).

[0150] In some embodiments, the first condition includes at least one of the following:

[0151] A relationship between an offset of an LTM measurement result of the first cell relative to a corresponding measurement result of the second cell and a first threshold satisfies a first predefined relationship, for example, the first relationship includes at least one of the following: the offset is greater than the first threshold, the offset is less than the first threshold, and the offset is equal to the first threshold;

[0152] The relationship between the LTM measurement result of the first cell and the second threshold satisfies a second predefined relationship. For example, the second predefined relationship includes at least one of the following: the LTM measurement result is greater than the second threshold, the LTM measurement result is less than the second threshold, and the LTM measurement result is equal to the second threshold.

[0153] It should be noted that at least one of the first threshold and the second threshold may be agreed upon by a protocol or configured by a network device. At least one of the first predefined relationship and the second predefined relationship may be agreed upon by a protocol or configured by a network device.

[0154] For example, the second cell includes at least one of the following: a current serving cell of the terminal, a cell where RLF occurs, a cell where handover failure occurs, and an LTM candidate cell.

[0155] The following describes the first condition in detail through several embodiments, taking four neighboring cells, cell#1, cell#2, cell#3, and cell#4, as examples.

[0156] In some embodiments, the terminal may measure four neighboring cells respectively to obtain four measurement results, namely LTM measurement result #1 corresponding to cell#1, LTM measurement result #2 corresponding to cell#2, LTM measurement result #3 corresponding to cell#3, and LTM measurement result #4 corresponding to cell#4.

[0157] For example, the first condition includes a relationship between an offset of an LTM measurement result of the first cell relative to a corresponding measurement result of the second cell and a first threshold, which satisfies a first predefined relationship.

[0158] The terminal may also measure the second cell and obtain measurement result #0. The terminal may compare LTM measurement result #1, LTM measurement result #2, LTM measurement result #3, and LTM measurement result #4 with measurement result #0 (e.g., calculate the difference) to determine the offset relative to measurement result #0.

[0159] For example, the offset #1 of the LTM measurement result #1 relative to the measurement result #0 satisfies the relationship with the first threshold and satisfies the first predefined relationship; the offset #2 of the LTM measurement result #2 relative to the measurement result #0, the offset #3 of the LTM measurement result #3 relative to the measurement result #0, and the offset #4 of the LTM measurement result #4 relative to the measurement result #0 and the first threshold do not satisfy the first predefined relationship. In this case, the terminal can only record the LTM measurement result #1.

[0160] For example, the first condition includes a relationship between the LTM measurement result of the first cell and the second threshold, which satisfies a second predefined relationship.

[0161] The terminal may respectively determine the relationships between LTM measurement result #1, LTM measurement result #2, LTM measurement result #3, LTM measurement result #4 and the second threshold.

[0162] For example, LTM measurement result #2 satisfies the second predefined relationship with the second threshold, LTM measurement result #3 satisfies the second predefined relationship with the second threshold, LTM measurement result #1 does not satisfy the second predefined relationship with the second threshold, and LTM measurement result #4 does not satisfy the second predefined relationship with the second threshold. Then the terminal can only record LTM measurement result #2 and LTM measurement result #3.

[0163] In some embodiments, the LTM information related to the radio link failure includes at least one of the following:

[0164] First time information, where the first time information is used to indicate a time interval from when the terminal receives the LTM configuration to when the radio link fails;

[0165] The type of cell handover performed by the terminal before the radio link fails, such as traditional handover, CHO, LTM handover, DAPS handover, etc.

[0166] Information about LTM candidate cells.

[0167] In some embodiments, before the radio link fails, only when the type of cell handover performed by the terminal is a specific type (eg, one of traditional handover, CHO, LTM handover, and DAPS handover), the terminal records the type in the LTM information related to RLF.

[0168] In some embodiments, in response to the occurrence of a RLF, and the terminal has an available LTM, the terminal records LTM information related to the RLF.

[0169] After the network device sends LTM configuration information to the terminal, it needs to reserve some resources for the terminal so that the terminal can smoothly switch to the LTM candidate cell when the terminal is triggered to perform LTM handover. However, if the resources are reserved for the terminal for a long time, the resources will not be available to other terminals for a long time, which will result in a certain degree of resource waste.

[0170] According to this embodiment, the LTM information related to RLF may include first time information. Since the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the RLF, the network device can determine whether the time interval from the terminal receiving the LTM configuration information to the RLF meets the requirements (for example, the time interval is greater than the interval threshold, or the time interval is less than the interval threshold, or the time interval is equal to the interval threshold), and then, if the time interval does not meet the requirements, the LTM configuration information can be adjusted.

[0171] In some embodiments, when the LTM information related to RLF includes the type of cell switching performed by the terminal before the RLF, the network device can determine whether the type meets the requirements (for example, whether the type is a specific type of switching (for example, at least one of traditional switching, CHO, LTM switching, and DAPS switching)), and then adjust the LTM configuration information if the type does not meet the requirements.

[0172] In some embodiments, when the LTM information related to RLF includes information about LTM candidate cells, the network device can determine whether the information about the LTM candidate cells in the LTM information related to RLF meets the requirements (for example, whether the duration of resources reserved for the LTM candidate cells is within a preset duration range), and then adjust the LTM configuration information if the information about the LTM candidate cells in the LTM information related to RLF does not meet the requirements.

[0173] It should be noted that whether the network device adjusts the LTM configuration information based on the RLF-related LTM information, and how to adjust the LTM configuration information, can be implemented based on the network device's own policy, or based on protocol agreements, or can be instructed by the core network function module (such as Access and Mobility Management Function (AMF)) or Operation Administration and Maintenance (OAM).

[0174] In some embodiments, the LTM information related to the handover failure includes at least one of the following:

[0175] Second time information, where the second time information is used to indicate a time interval from when the terminal receives the LTM configuration to when the handover fails;

[0176] The type of cell handover performed by the terminal before the handover failed;

[0177] Information about LTM candidate cells.

[0178] In some embodiments, before the handover fails, only when the type of cell handover performed by the terminal is a specific type (eg, one of traditional handover, CHO, LTM handover, and DAPS handover), the terminal records the type in the LTM information related to RLF.

[0179] In some embodiments, in response to a handover failure occurring and the terminal having an available LTM, the terminal records LTM information related to the RLF.

[0180] After the network device sends LTM configuration information to the terminal, it needs to reserve some resources for the terminal so that the terminal can smoothly switch to the LTM candidate cell when the terminal is triggered to perform LTM handover. However, if the resources are reserved for the terminal for a long time, the resources will not be available to other terminals for a long time, which will result in a certain degree of resource waste.

[0181] According to this embodiment, the LTM information related to the switching failure may include the first time information. Since the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the switching failure, the network device can determine whether the time interval from the terminal receiving the LTM configuration information to the switching failure meets the requirements (for example, the time interval is greater than the interval threshold, or the time interval is less than the interval threshold, or the time interval is equal to the interval threshold), and then, if the time interval does not meet the requirements, the LTM configuration information can be adjusted.

[0182] In some embodiments, when the LTM information related to the handover failure includes the type of cell handover performed by the terminal before the handover failure, the network device can determine whether the type meets the requirements (for example, whether the type is a specific type of handover (for example, at least one of traditional handover, CHO, LTM handover, and DAPS handover)), and then adjust the LTM configuration information if the type does not meet the requirements.

[0183] In some embodiments, when the LTM information related to the switching failure includes information about the LTM candidate cells, the network device can determine whether the information about the LTM candidate cells in the LTM information related to the switching failure meets the requirements (for example, whether the duration of the reserved resources for the LTM candidate cells is within a preset duration range), and then adjust the LTM configuration information if the information about the LTM candidate cells in the LTM information related to the switching failure does not meet the requirements.

[0184] It should be noted that whether the network device adjusts the LTM configuration information based on the LTM information related to the switching failure, and how to adjust the LTM configuration information, can be implemented based on the network device's own policy, or based on protocol agreements, or can be instructed by the core network functional module (such as AMF) or OAM.

[0185] In some embodiments, the LTM candidate cell does not include a neighboring cell corresponding to the LTM measurement result.

[0186] The terminal may carry information about LTM candidate cells in LTM information related to RLF or LTM information related to handover failure and send it to the network device.

[0187] For example, the LTM candidate cell information may indicate a candidate target cell list, which may be a candidate target cell list for LTM cell changes in the LTM candidate configuration (ltm-CandidateConfig) upon connection failure. Furthermore, the LTM candidate cell information does not indicate a candidate target cell included in the cell corresponding to the neighbor cell measurement result (measResulNeighCell).

[0188] In some embodiments, the terminal may send capability information to the network device, where the capability information is used to indicate at least one of the following:

[0189] Does the terminal support recording LTM information related to RLF or handover failure?

[0190] Whether the terminal sends LTM information related to recording RLF or handover failure.

[0191] In some embodiments, the terminal will notify the network device of its support for recording LTM information related to RLF or switching failure and sending LTM information related to RLF or switching failure to the network device, so that the network device can perform appropriate operations later and avoid waste of resources.

[0192] For example, the terminal supports recording LTM information related to RLF or switching failure, and supports sending LTM information related to RLF or switching failure to the network device, then the capability information sent by the terminal to the network device can indicate that the terminal supports recording LTM information related to RLF or switching failure, and supports sending LTM information related to RLF or switching failure to the network device.

[0193] In this case, when the network device needs LTM information related to RLF or handover failure, it can choose to send a request message to the terminal to request the terminal to send the LTM information related to RLF or handover failure to the network device.

[0194] For example, the terminal supports recording LTM information related to RLF or switching failure, but does not support sending LTM information related to RLF or switching failure to the network device. Then the capability information sent by the terminal to the network device can indicate that the terminal supports recording LTM information related to RLF or switching failure, but does not support sending LTM information related to RLF or switching failure to the network device.

[0195] In this case, when the network device needs LTM information, it can choose to send a request message to other devices that can communicate with the terminal to request other devices to obtain LTM information related to RLF or switching failure from the terminal, and then obtain LTM information related to RLF or switching failure from other devices.

[0196] For example, the terminal does not support recording LTM information related to RLF or switching failure, but supports sending LTM information related to RLF or switching failure to the network device. Then the capability information sent by the terminal to the network device can indicate that the terminal does not support recording LTM information related to RLF or switching failure, but supports sending LTM information related to RLF or switching failure to the network device.

[0197] In this case, since the terminal does not record LTM information related to RLF or handover failure, the network device does not need to try to obtain LTM information related to RLF or handover failure from the terminal.

[0198] In some embodiments, before recording the LTM information in the RLF report, the terminal may choose to first record the LTM information in a related report variable of the RLF report.

[0199] Of course, before the terminal records the LTM information in the RLF report, it is not limited to recording the LTM information by reporting variables, and the LTM information may also be recorded in other ways, which is not limited by the present disclosure.

[0200] In some embodiments, the RLF report used to record LTM information can reuse existing RLF reports, or a new RLF report can be defined specifically for recording LTM information; in some embodiments, the RLF report-related report variables used to record LTM information can reuse existing RLF report-related report variables, or a new RLF report-related report variables can be defined specifically for recording LTM information.

[0201] In some embodiments, when the terminal sends the RLF report containing LTM information to the network device, it can also indicate the identifier of the LTM candidate cell (for example, the identifier of the available LTM candidate cell) to the network device. The network device can determine the LTM candidate cell based on the identifier of the LTM candidate cell, and then forward the RLF report sent by the terminal to the LTM candidate cell.

[0202] In some embodiments, the terminal may further send availability indication information to the network device, where the availability indication information is used to indicate at least one of the following: available LTM information stored in the terminal, available LTM candidate cells (e.g., identifiers indicating LTM candidate cells). Based on this, the network device determines which LTM candidate cells are available and / or determines whether available LTM information is stored in the terminal.

[0203] In some embodiments, the availability indication information may reuse traditional availability indication information; or it may be newly defined availability indication information, which may be specifically used to indicate that available LTM-related measurement results and / or available LTM candidate cells are stored in the terminal.

[0204] In addition, in some embodiments, the report used to record LTM information is not limited to RLF reports (such as traditional RLF reports or newly defined RLF reports). For example, LTM information can also be recorded through other reports. Other reports can be traditional reports, such as traditional SON reports (such as traditional switching success reports, traditional connection establishment failure reports, etc.), traditional MDT reports, etc.; they can also be newly defined reports, such as newly defined SON reports (such as newly defined switching success reports, newly defined connection establishment failure reports, etc.), such as newly defined MDT reports.

[0205] The communication method involved in the embodiments of the present disclosure may include at least one of steps S201 and S202. For example, step S201 may be implemented as an independent embodiment, step S202 may be implemented as an independent embodiment, and steps S201+S202 may be implemented as independent embodiments, but are not limited thereto.

[0206] In some embodiments, step S201 may be performed in a swapped order or simultaneously.

[0207] In some embodiments, step S201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0208] In some embodiments, step S202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0209] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0210] In a first aspect, embodiments of the present disclosure provide an information recording method. Figure 3 is a schematic flow chart illustrating an information recording method according to an embodiment of the present disclosure. The information recording method illustrated in this embodiment can be executed by a terminal.

[0211] As shown in FIG3 , the information recording method may include the following steps:

[0212] In step S301, a radio link failure or a handover failure occurs, and mobility LTM information triggered by layer 1 or layer 2 is recorded.

[0213] It should be noted that the embodiment shown in FIG. 3 can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed and the present disclosure does not limit it.

[0214] In some embodiments, the LTM information includes at least one of the following: a cell identity based on LTM recovery; LTM measurement results of neighboring cells; LTM information related to the radio link failure; LTM information related to the handover failure; and a reconstructed cell identity.

[0215] In some embodiments, the information recording method further includes: sending indication information to a network device, wherein the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

[0216] In some embodiments, the LTM measurement result includes at least one of the following: an L1 measurement result; an L3 measurement result.

[0217] In some embodiments, the LTM measurement results of the neighboring cells include LTM measurement results of a first cell, wherein the first cell includes at least one of the following: a cell among the neighboring cells that meets the first condition; a cell among the neighboring cells that does not meet the first condition.

[0218] In some embodiments, the first condition includes at least one of the following: a relationship between an offset of the LTM measurement result of the first cell relative to the measurement result corresponding to the second cell and a first threshold satisfies a first predefined relationship; a relationship between the LTM measurement result of the first cell and a second threshold satisfies a second predefined relationship.

[0219] In some embodiments, the second cell includes at least one of the following: a current serving cell of the terminal, a cell where the radio link failure occurs, a cell where the handover failure occurs, and an LTM candidate cell.

[0220] In some embodiments, the LTM information related to the wireless link failure includes at least one of the following: first time information, wherein the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the wireless link failure; the type of cell switching performed by the terminal before the wireless link failure; and information about LTM candidate cells.

[0221] In some embodiments, the LTM information related to the switching failure includes at least one of the following: second time information, wherein the second time information is used to indicate the time interval from the terminal receiving the LTM configuration to the switching failure; the type of cell switching performed by the terminal before the switching failure; and information about LTM candidate cells.

[0222] In some embodiments, the LTM candidate cell does not include a neighboring cell corresponding to the LTM measurement result.

[0223] In some embodiments, the information recording method further includes: sending the LTM information to a network device.

[0224] In some embodiments, the information recording method further includes: sending capability information to the network device, wherein the capability information is used to indicate at least one of the following:

[0225] Whether the terminal supports recording LTM information related to radio link failure or handover failure

[0226] Whether the terminal sends LTM information related to recording radio link failure or handover failure.

[0227] For the first aspect and the optional implementation of the optional embodiment of the first aspect, reference can be made to the optional implementation in the embodiment shown in FIG2 and other related parts in the embodiment involved in FIG2 , which will not be described in detail here.

[0228] In a second aspect, embodiments of the present disclosure provide a method for receiving information. Figure 4 is a schematic flow chart illustrating a method for receiving information according to an embodiment of the present disclosure. The method for receiving information illustrated in this embodiment can be executed by a terminal.

[0229] As shown in FIG4 , the information recording method may include the following steps:

[0230] In step S401, layer 1 or layer 2 triggered mobility LTM information sent by a terminal is received, wherein the LTM information is recorded when a radio link failure or a handover failure occurs to the terminal.

[0231] It should be noted that the embodiment shown in FIG. 4 can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed and the present disclosure does not limit it.

[0232] In some embodiments, the LTM information includes at least one of the following: a cell identity based on LTM recovery; LTM measurement results of neighboring cells; LTM information related to the radio link failure; LTM information related to the handover failure; and a reconstructed cell identity.

[0233] In some embodiments, the information receiving method further includes: receiving indication information sent by the terminal, wherein the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

[0234] In some embodiments, the LTM measurement result includes at least one of the following: an L1 measurement result; an L3 measurement result.

[0235] In some embodiments, the LTM measurement results of the neighboring cells include LTM measurement results of a first cell, wherein the first cell includes at least one of the following: a cell among the neighboring cells that meets the first condition; a cell among the neighboring cells that does not meet the first condition.

[0236] In some embodiments, the first condition includes at least one of the following: a relationship between an offset of the LTM measurement result of the first cell relative to the measurement result corresponding to the second cell and a first threshold satisfies a first predefined relationship; a relationship between the LTM measurement result of the first cell and a second threshold satisfies a second predefined relationship.

[0237] In some embodiments, the second cell includes at least one of the following: a current serving cell of the terminal, a cell where the radio link failure occurs, a cell where the handover failure occurs, and an LTM candidate cell.

[0238] In some embodiments, the LTM information related to the wireless link failure includes at least one of the following: first time information, wherein the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the wireless link failure; the type of cell switching performed by the terminal before the wireless link failure; and information about LTM candidate cells.

[0239] In some embodiments, the LTM information related to the switching failure includes at least one of the following: second time information, wherein the second time information is used to indicate the time interval from the terminal receiving the LTM configuration to the switching failure; the type of cell switching performed by the terminal before the switching failure; and information about LTM candidate cells.

[0240] In some embodiments, the LTM candidate cell does not include a neighboring cell corresponding to the LTM measurement result.

[0241] In some embodiments, the information receiving method further includes: receiving capability information sent by the terminal, wherein the capability information is used to indicate at least one of the following: whether the terminal supports recording LTM information related to wireless link failure or switching failure; whether the terminal sends LTM information related to recording wireless link failure or switching failure.

[0242] In some embodiments, in the event of consecutive LTM correlation failures, the terminal may store two RLF-related information in an RLF report and report (eg, send the RLF report to a network device).

[0243] The above-mentioned continuous LTM-related failures may include at least one of the following:

[0244] A terminal with LTM configuration declares RLF in the source cell. The terminal selects a candidate LTM target cell (i.e., a cell among the LTM candidate cells) for connection reestablishment. The terminal fails to reestablish to the selected LTM candidate cell.

[0245] A terminal with LTM configuration performs LTM towards a target cell when the configured conditions are met and a handover failure occurs. The terminal selects a candidate LTM target cell (i.e., a cell from the LTM candidate cell list) for connection reestablishment. The terminal fails to reestablish to the selected LTM candidate cell.

[0246] A terminal with LTM configuration performs a normal handover (also known as a traditional handover) to a target cell and experiences a handover failure. The terminal selects a configured candidate LTM target cell for connection re-establishment. The UE fails to re-establish to the selected LTM candidate cell using the LTM procedure.

[0247] In some embodiments, the LTM-related information may include at least one of the following:

[0248] Time information. For example, the time from the execution of LTM to the connection failure; for example, the multiplexed until re-establishment time (timeUntilReconnection, for continuous LTM failure cases, it can represent the time from the first failure to reconnection), the since failure time (timeSinceFailure). For example, the first time (for example, called Time C) can represent the time elapsed between the first execution of LTM and the corresponding latest LTM configuration received for the selected target cell, and can be a newly introduced timer, such as the time since LMT reconfiguration (timeSinceLTMReconfig). For example, the second time (for example, called Time D) can be represented by the connection failure time (timeConnFailure), which should start when LTM is executed and stop when a handover failure or a radio link failure occurs.

[0249] Measurements of cells and / or beams associated with LTM. For example, the source cell for LTM. For example, the target cell for performing LTM, e.g., the cell where reestablishment is performed after LTM failure or source RLF.

[0250] Information used to distinguish at least one of common switching failure, LTM failure, and LTM recovery failure.

[0251] The neighbor cell measurement results (measResultNeighCells) in the RLF report are reused and include an indication of whether the measured neighbor cell is configured as an LTM candidate cell.

[0252] Candidate cell identifier list.

[0253] Add a display indication in the RLF report to indicate whether the last handover performed before the RLF in the target cell was an LTM handover.

[0254] Cell identifier. For example, the LTM cell identifier is used to indicate the LTM cell selected before the connection is reestablished after the first connection failure. For example, the cell identifier is used to indicate the cell where the terminal attempts to reestablish for the second time after the first reestablishment failure after a handover failure or RLF. For example, the first reestablishment cell identifier is used to indicate the cell where the terminal attempts to reestablish for the second time after the LTM recovery failure after a handover failure or RLF. For example, the second reestablishment cell identifier is used to indicate the cell in the RLF report. If the cell is not an LTM candidate cell, the terminal performs connection reestablishment in the cell (for example, the first connection reestablishment). The failed primary cell identifier can be reused to indicate the cell where the first connection failure was detected in the case of LTM. The previous primary cell identifier is used to indicate the cell where the handover failure or RLF occurred.

[0255] Temporary identifier of the cell wireless network.

[0256] RLF reason, if the first failure is RLF (that is, not a handover failure).

[0257] No suitable community was found.

[0258] Add an explicit indication in the RLF report to indicate whether the handover performed before the RLF of the target cell is an LTM handover.

[0259] In some embodiments, if the failure is detected to be due to synchronization failure reconfiguration as described in 3GPP protocol 5.3.5.8.3, the fields in the radio link failure report variable (VarRLF-report) are set based on the following:

[0260] If the terminal supports RLF reporting for LTM cell change, and when the cell change fails, the configuration of LTM cell change (i.e., LTM configuration) in the LTM configuration report variable (VarLTM-Config) of the master cell group (MCG) is available:

[0261] If the terminal performs an LTM change to the target primary cell according to the LTM candidate configuration (ltm-CandidateConfig) of the target primary cell:

[0262] The time since LTM reconfiguration (timeSinceLTM-Reconfig) may be set to an interval between a first operation and a second operation, wherein the first operation includes executing a last RRCReconfiguration message including a synchronous reconfiguration (reconfigurationWithSync) of a target PCell of a failed LTM cell change, and the second operation includes receiving, in a source primary cell, a last LTM configuration of an LTM candidate of a target PCell of a failed LTM cell change;

[0263] Otherwise (that is, the terminal does not perform an LTM change to the target primary cell according to the LTM candidate configuration of the target primary cell): the self-LT reconfiguration time can be set to the interval time between the third operation and the fourth operation, wherein the third operation includes executing the last RRCReconfiguration message of the synchronous reconfiguration (reconfigurationWithSync) of the target PCell including the failed handover, and the second operation includes receiving the last LTM configuration including the LTM candidate in the source primary cell.

[0264] The conditional handover candidate cell list (choCandidateCellList) is set to include the global cell identifier (if available), otherwise, the physical cell identifier and carrier frequency of each candidate target cell for LTM cell handover included in the LTM candidates in the primary cell group LTM configuration variable when the handover fails are set, but the candidate target cells included in the neighboring cell measurement results are not included.

[0265] If the terminal supports RLF reporting for LTM cell change, and the last executed RRCReconfiguration message including synchronization reconfiguration is related to LTM cell change, the last handover type (lastHO-Type) can be set to LTM.

[0266] In some embodiments, if the failure is detected to be due to a radio link failure as described in 3GPP protocol 5.3.10.3, the fields in the radio link failure report variable (VarRLF-report) are set based on the following:

[0267] If an RRCReconfiguration message containing synchronization reconfiguration is received before the connection fails:

[0268] If timer T311 (specific functions can be found in the relevant protocols and are not described here) is not running before entering the primary cell where RLF is detected:

[0269] If the last executed RRCReconfiguration message containing synchronous reconfiguration is related to LTM cell change, the last handover type is set to LTM.

[0270] If a radio link failure is declared, the LTM cell change configuration in the MCG's LTM configuration variables is available:

[0271] Set timeSinceLTM-Reconfig to the time interval from detection of RLF to receipt of the LTM configuration including the LTM candidate message in the source PCell;

[0272] The LTM candidate cell list (ltmCandidateCellList) is set to include the global cell identity (if available), otherwise, it is set to the physical cell identity and carrier frequency of each candidate target cell among all candidate target cells for LTM cell handover included in the LTM candidates in the LTM configuration variable of the MCG at RLF, but does not include the candidate target cells in the neighbor cell measurement results.

[0273] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0274] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0275] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0276] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0277] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0278] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0279] Corresponding to the aforementioned embodiments of the information recording method and the information receiving method, the present disclosure also provides embodiments of an information recording device and an information receiving device.

[0280] FIG5 is a schematic block diagram of an information recording device according to an embodiment of the present disclosure. As shown in FIG5 , the information recording device includes: a processing module 501 .

[0281] In some embodiments, the processing module is configured to record layer 1 or layer 2 triggered mobility LTM information in response to a radio link failure or a handover failure.

[0282] In some embodiments, the LTM information includes at least one of the following: a cell identity based on LTM recovery; LTM measurement results of neighboring cells; LTM information related to the radio link failure; LTM information related to the handover failure; and a reconstructed cell identity.

[0283] In some embodiments, the apparatus further includes: a sending module configured to send indication information to a network device, wherein the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

[0284] In some embodiments, the LTM measurement result includes at least one of the following: an L1 measurement result; an L3 measurement result.

[0285] In some embodiments, the LTM measurement results of the neighboring cells include LTM measurement results of a first cell, wherein the first cell includes at least one of the following: a cell among the neighboring cells that meets the first condition; a cell among the neighboring cells that does not meet the first condition.

[0286] In some embodiments, the first condition includes at least one of the following: a relationship between an offset of the LTM measurement result of the first cell relative to the measurement result corresponding to the second cell and a first threshold satisfies a first predefined relationship; a relationship between the LTM measurement result of the first cell and a second threshold satisfies a second predefined relationship.

[0287] In some embodiments, the second cell includes at least one of the following: a current serving cell of the terminal, a cell where the radio link failure occurs, a cell where the handover failure occurs, and an LTM candidate cell.

[0288] In some embodiments, the LTM information related to the wireless link failure includes at least one of the following: first time information, wherein the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the wireless link failure; the type of cell switching performed by the terminal before the wireless link failure; and information about LTM candidate cells.

[0289] In some embodiments, the LTM information related to the switching failure includes at least one of the following: second time information, wherein the second time information is used to indicate the time interval from the terminal receiving the LTM configuration to the switching failure; the type of cell switching performed by the terminal before the switching failure; and information about LTM candidate cells.

[0290] In some embodiments, the LTM candidate cell does not include a neighboring cell corresponding to the LTM measurement result.

[0291] In some embodiments, the apparatus further includes: a sending module configured to send the LTM information to a network device.

[0292] In some embodiments, the apparatus further includes: a sending module configured to send capability information to the network device, wherein the capability information is used to indicate at least one of the following: whether the terminal supports recording LTM information related to wireless link failure or switching failure; whether the terminal sends LTM information related to recording wireless link failure or switching failure.

[0293] In some embodiments, the information receiving device may be provided in the terminal and work independently of the modules in the terminal, or work in conjunction with the modules in the terminal.

[0294] FIG6 is a schematic block diagram of an information receiving device according to an embodiment of the present disclosure. As shown in FIG6 , the information receiving device includes: a receiving module 601 .

[0295] In some embodiments, the receiving module is configured to receive layer 1 or layer 2 triggered mobility LTM information sent by the terminal, wherein the LTM information is recorded when a radio link failure or a handover failure occurs to the terminal.

[0296] In some embodiments, the LTM information includes at least one of the following: a cell identity based on LTM recovery; LTM measurement results of neighboring cells; LTM information related to the radio link failure; LTM information related to the handover failure; and a reconstructed cell identity.

[0297] In some embodiments, the receiving module is further configured to receive indication information sent by the terminal, wherein the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

[0298] In some embodiments, the LTM measurement result includes at least one of the following: an L1 measurement result; an L3 measurement result.

[0299] In some embodiments, the LTM measurement results of the neighboring cells include LTM measurement results of a first cell, wherein the first cell includes at least one of the following: a cell among the neighboring cells that meets the first condition; a cell among the neighboring cells that does not meet the first condition.

[0300] In some embodiments, the first condition includes at least one of the following: a relationship between an offset of the LTM measurement result of the first cell relative to the measurement result corresponding to the second cell and a first threshold satisfies a first predefined relationship; a relationship between the LTM measurement result of the first cell and a second threshold satisfies a second predefined relationship.

[0301] In some embodiments, the second cell includes at least one of the following: a current serving cell of the terminal, a cell where the radio link failure occurs, a cell where the handover failure occurs, and an LTM candidate cell.

[0302] In some embodiments, the LTM information related to the wireless link failure includes at least one of the following: first time information, wherein the first time information is used to indicate the time interval from the terminal receiving the LTM configuration to the wireless link failure; the type of cell switching performed by the terminal before the wireless link failure; and information about LTM candidate cells.

[0303] In some embodiments, the LTM information related to the switching failure includes at least one of the following: second time information, wherein the second time information is used to indicate the time interval from the terminal receiving the LTM configuration to the switching failure; the type of cell switching performed by the terminal before the switching failure; and information about LTM candidate cells.

[0304] In some embodiments, the LTM candidate cell does not include a neighboring cell corresponding to the LTM measurement result.

[0305] In some embodiments, the receiving module is further configured to receive capability information sent by the terminal, wherein the capability information is used to indicate at least one of the following: whether the terminal supports recording LTM information related to wireless link failure or switching failure; whether the terminal sends LTM information related to recording wireless link failure or switching failure.

[0306] In some embodiments, the information receiving device may be provided in the network device and work independently of the modules in the network device, or work in conjunction with the modules in the network device.

[0307] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can be referred to the partial description of the method embodiment. The device embodiment described above is merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art can understand and implement it without paying any creative work.

[0308] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0309] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0310] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0311] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0312] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 7100 is used to perform any of the above methods. Optionally, one or more processors 7101 are used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0313] In some embodiments, the communication device 7100 further includes one or more transceivers 7102. When the communication device 7100 includes one or more transceivers 7102, the transceiver 7102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, steps S201 and S202, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, steps S201 and S202, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0314] In some embodiments, the communication device 7100 further includes one or more memories 7103 for storing data. Alternatively, all or part of the memories 7103 may be located outside the communication device 7100. In alternative embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuits 7104 are connected to the memory 7102 and may be configured to receive data from the memory 7102 or other devices, or to send data to the memory 7102 or other devices. For example, the interface circuits 7104 may read data stored in the memory 7102 and send the data to the processor 7101.

[0315] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0316] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0317] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0318] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Alternatively, terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data. Alternatively, all or part of memory 7203 may be located external to chip 7200. Optionally, interface circuit 7202 is connected to memory 7203 and may be used to receive data from memory 7203 or other devices, or may be used to send data to memory 7203 or other devices. For example, interface circuit 7202 may read data stored in memory 7203 and send the data to processor 7201.

[0319] In some embodiments, the interface circuit 7202 performs at least one of the communication steps (e.g., steps S201 and S202, but not limited thereto) of the aforementioned method. For example, the interface circuit 7202 performing the communication steps (e.g., steps S201 and S202) of the aforementioned method means that the interface circuit 7202 performs data exchange between the processor 7201, chip 7200, memory 7203, or a transceiver device. In some embodiments, the processor 7201 performs at least one of the other steps (e.g., steps S201 and S202, but not limited thereto).

[0320] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0321] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0322] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0323] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. An information recording method, characterized in that, Executed by a terminal, the method includes: When a radio link failure or a handover failure occurs, record mobility LTM information triggered by layer 1 or layer 2.

2. The method according to claim 1, wherein The LTM information includes at least one of the following: Cell identifier based on LTM recovery; LTM measurement results of neighboring cells; LTM information related to the radio link failure; LTM information related to the handover failure; Reconstruction cell identifier.

3. The method according to claim 2, wherein The method further includes: Send indication information to a network device, where the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

4. The method according to claim 2 or 3, characterized in that The LTM measurement results include at least one of the following: L1 measurement results; L3 measurement results.

5. The method according to any one of claims 2 to 4, characterized in that The LTM measurement results of the neighboring cell include the LTM measurement results of a first cell, where the first cell includes at least one of the following: Cells in the neighboring cell that meet a first condition.

6. The method according to claim 5, wherein The first condition includes at least one of the following: The relationship between the offset of the LTM measurement results of the first cell relative to the corresponding measurement results of a second cell and a first threshold satisfies a first predefined relationship; The relationship between the LTM measurement results of the first cell and a second threshold satisfies a second predefined relationship.

7. The method according to claim 6, wherein The second cell includes at least one of the following: The current serving cell of the terminal, the cell where the radio link failure occurs, the cell where the handover failure occurs, LTM candidate cells.

8. The method according to claim 2, wherein The LTM information related to the radio link failure includes at least one of the following: First time information, where the first time information is used to indicate the time interval from when the terminal receives the LTM configuration to the radio link failure; The type of cell handover performed by the terminal before the radio link failure; Information of LTM candidate cells.

9. The method according to claim 2, wherein The LTM information related to the handover failure includes at least one of the following: Second time information, where the second time information is used to indicate the time interval from when the terminal receives the LTM configuration to the handover failure; The type of cell handover performed by the terminal before the handover failure; Information of LTM candidate cells.

10. The method according to claim 8 or 9, characterized in that, The LTM candidate cells do not include the neighboring cell corresponding to the LTM measurement results.

11. The method according to any one of claims 1 to 10, characterized in that, The method further includes: Send the LTM information to the network device.

12. The method according to any one of claims 1 to 11, characterized in that The method further includes: Send capability information to the network device, where the capability information is used to indicate at least one of the following: Whether the terminal supports recording LTM information related to radio link failure or handover failure Whether the terminal sends LTM information related to radio link failure or handover failure.

13. An information receiving method, characterized in that, Executed by a network device, the method includes: Receive mobility LTM information triggered by layer 1 or layer 2 sent by a terminal, where the LTM information is recorded when the terminal has a radio link failure or a handover failure.

14. The method according to claim 13, characterized in that, The LTM information includes at least one of the following: Cell identifier based on LTM recovery; LTM measurement results of neighboring cells; LTM information related to the radio link failure; LTM information related to the handover failure; Reconstruction cell identifier.

15. The method according to claim 14, wherein The method further includes: Receive the indication information sent by the terminal, where the indication information is used to indicate whether the neighboring cell is an LTM candidate cell.

16. The method according to claim 14 or 15, characterized in that The LTM measurement result includes at least one of the following: L1 measurement result; L3 measurement result.

17. The method according to any one of claims 14 to 16, characterized in that The LTM measurement result of the neighboring cell includes the LTM measurement result of the first cell, where the first cell includes at least one of the following: The cell in the neighboring cell that meets the first condition.

18. The method according to claim 17, characterized in that, The first condition includes at least one of the following: The relationship between the offset of the LTM measurement result of the first cell relative to the corresponding measurement result of the second cell and the first threshold satisfies the first predefined relationship; The relationship between the LTM measurement result of the first cell and the second threshold satisfies the second predefined relationship.

19. The method according to claim 18, wherein The second cell includes at least one of the following: The current serving cell of the terminal, the cell where the radio link failure occurs, the cell where the handover failure occurs, the LTM candidate cell.

20. The method according to claim 14, wherein The LTM information related to the radio link failure includes at least one of the following: First time information, where the first time information is used to indicate the time interval from when the terminal receives the LTM configuration to the radio link failure; The type of cell handover performed by the terminal before the radio link failure; Information of the LTM candidate cell.

21. The method according to claim 14, characterized in that, The LTM information related to the handover failure includes at least one of the following: Second time information, where the second time information is used to indicate the time interval from when the terminal receives the LTM configuration to the handover failure; The type of cell handover performed by the terminal before the handover failure; Information of the LTM candidate cell.

22. The method according to claim 20 or 21, characterized in that, The LTM candidate cell does not include the neighboring cell corresponding to the LTM measurement result.

23. The method according to any one of claims 13 to 22, characterized in that, The method further includes: Receiving the capability information sent by the terminal, where the capability information is used to indicate at least one of the following: Whether the terminal supports recording LTM information related to radio link failure or handover failure; Whether the terminal sends LTM information related to radio link failure or handover failure.

24. An information recording apparatus, characterized in that, The device includes: A processing module, configured to record the mobility LTM information triggered by layer 1 or layer 2 in response to a radio link failure or a handover failure.

25. An information receiving device, characterized in that, Executed by a network device, the device includes: A receiving module, configured to receive the mobility LTM information triggered by layer 1 or layer 2 sent by the terminal, where the LTM information is recorded when the terminal has a radio link failure or a handover failure.

26. A terminal, characterized in that, Includes: One or more processors; Wherein, the terminal is used to execute the information recording method according to any one of claims 1 to 11.

27. A network device, characterized in that, Includes: One or more processors; Wherein, the network device is used to execute the information receiving method according to any one of claims 12 to 23.

28. A communication system, characterized in that, Includes a terminal and a network device, where the terminal is configured to implement the information recording method according to any one of claims 1 to 11, and the network device is configured to implement the information receiving method according to any one of claims 12 to 23.

29. A storage medium, the storage medium stores instructions, characterized in that, When the instruction runs on a communication device, the communication device is caused to execute the information recording method according to any one of claims 1 to 11, and / or the information receiving method according to any one of claims 12 to 23.

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