A method and device in a communication node used for wireless communication

Abstract

The present application discloses a method and apparatus in a communication node used for wireless communication. The communication node receives a first message, the first message determines a first criterion and a second criterion; determines that a first cell meets a target criterion, the target criterion is one of the first criterion or the second criterion; sends a first signal on the first cell; the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node. The present application shortens the interruption delay caused by wireless connection problems in a large latency network.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a transmission method and device with a large delay. Background Art

[0002] Faced with the increasing communication demand, 3GPP (3rd Generation Partner Project) began to study non-terrestrial network (NTN) communication. The 3GPP RAN#80 meeting decided to carry out the "NR (New Radio) Support for Non-terrestrial Network Solutions" research project, which is a continuation of the previous "NR Support for Non-terrestrial Networks" research project (RP-171450). Among them, the mobility of NTN is an important research aspect. 3GPP supports the use of conditional handover (CHO) in NTN to reduce delay, and enhances the CHO execution conditions in the NTN system, adding trigger conditions based on time and location on the basis of the CHO execution conditions in R16 (Release 16). Summary of the invention

[0003] Due to the complexity of the communication environment, it is difficult to ensure the reliability of CHO in NTN. When wireless connection problems occur, how to avoid interruption delay as much as possible needs further research.

[0004] In view of the above problems, this application provides a solution. In the description of the above problems, the NTN scenario is used as an example; this application is also applicable to scenarios such as terrestrial network (TN) communication or NTN-TN hybrid network or V2X (vehicle-to-everything) or L2 (Layer 2) / L3 (Layer 3) relay, achieving similar technical effects in the NTN scenario. In addition, the use of a unified solution for different scenarios also helps reduce hardware complexity and cost.

[0005] As an embodiment, the interpretation of the terminology in the present application refers to the definition of the 3GPP specification protocol TS36 series.

[0006] As an example, the interpretation of the terms in the present application refers to the definition of the TS38 series of specification protocols of 3GPP.

[0007] As an example, the interpretation of the terms in the present application refers to the definition of the TS37 series of specification protocols of 3GPP.

[0008] As an embodiment, the interpretation of the terms in this application refers to the definition of the standard protocol of IEEE (Institute of Electrical and Electronics Engineers).

[0009] It should be noted that, in the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0010] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0011] receiving a first message, the first message being used to determine a first criterion and a second criterion; determining that a first cell satisfies a target criterion, the target criterion being one of the first criterion or the second criterion;

[0012] Sending a first signal on the first cell;

[0013] The first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is that the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node.

[0014] As an embodiment, the problem to be solved by the present application includes: how to avoid interruption delay as much as possible.

[0015] As an embodiment, the problem to be solved by the present application includes: how to recover as quickly as possible when a wireless connection problem occurs.

[0016] As an embodiment, the characteristics of the above method include: for the same cell, selecting the target criterion according to whether a wireless connection problem occurs.

[0017] As an embodiment, the characteristics of the above method include: configuring at least two cell selection criteria for one cell.

[0018] As an embodiment, the characteristics of the above method include: configuring at least two cell switching criteria for one cell.

[0019] As an embodiment, the characteristics of the above method include: the occurrence of a wireless connection problem is used to trigger a switch between the NTN and the TN.

[0020] As an embodiment, the characteristics of the above method include: the occurrence of a radio connection problem is used to determine the relaxation of the cell selection criterion.

[0021] As an embodiment, the characteristics of the above method include: the wireless connection problem includes handover failure (Handover Failure, HOF).

[0022] As an embodiment, the characteristics of the above method include: the wireless connection problem includes a radio link failure (Radio Link Failure, RLF).

[0023] As an embodiment, the characteristics of the above method include: the wireless connection problem includes no suitable cell is found.

[0024] As an embodiment, the characteristics of the above method include: the wireless connection problem includes cell selection failure.

[0025] As an embodiment, the benefits of the above method include: avoiding interruption delay.

[0026] As an embodiment, the benefits of the above method include: recovering the wireless connection problem as quickly as possible.

[0027] According to one aspect of the present application, it is characterized by comprising:

[0028] A second message is sent, the second message indicating the target criteria.

[0029] As an embodiment, the characteristics of the above method include: the UE notifies the base station whether the first cell is determined according to the first criterion or the second criterion.

[0030] As an embodiment, the benefits of the above method include: being conducive to self-organizing network (Self-Organizing Network, SON) / minimization of drive-test (Minimization of Drive-Test, MDT) optimization and enhancement.

[0031] According to one aspect of the present application, it is characterized by comprising:

[0032] receiving a first signaling, wherein the first signaling is used to determine a first time length; a relationship between a time interval at which the first node has the wireless connection problem and the first time length is used to determine the target criterion;

[0033] Wherein, the first time length includes at least 1 millisecond.

[0034] As an embodiment, the characteristics of the above method include: selecting the target criterion from the first criterion and the second criterion according to the time interval at which the wireless connection problem occurs in the UE.

[0035] As an embodiment, the characteristics of the above method include: determining according to the first criterion or the second criterion is related to the time interval during which the wireless connection problem occurs between the first cell and the first node.

[0036] As an embodiment, the characteristics of the above method include: when the time interval when the wireless connection problem occurs at the first node is not greater than the first time length, the target criterion is the first criterion; when the time interval when the wireless connection problem occurs at the first node is greater than the first time length, the target criterion is the second criterion.

[0037] As an embodiment, the benefits of the above method include: selecting a suitable criterion to determine the first cell according to the length of the time interval when the UE has the wireless connection problem, and shortening the interruption delay on the basis of selecting a good cell as much as possible.

[0038] As an embodiment, the benefits of the above method include: the longer the time interval between the occurrence of the wireless connection problem by the UE, the looser the target criterion, and the easier it is to select the first cell.

[0039] According to one aspect of the present application, it is characterized by comprising:

[0040] receiving a second signaling, wherein the second signaling is used to determine a first value; a relationship between the number of times the wireless connection problem occurs at the first node and the first value is used to determine the target criterion;

[0041] The first value is a non-negative integer.

[0042] As an embodiment, the characteristics of the above method include: selecting the target criterion from the first criterion and the second criterion according to the number of times the wireless connection problem occurs in the UE.

[0043] As an embodiment, the characteristics of the above method include: determining according to the first criterion or the second criterion is related to the number of times the wireless connection problem occurs between the first cell and the first node.

[0044] As an embodiment, the characteristics of the above method include: when the number of times the wireless connection problem occurs at the first node is not greater than the first value, the target criterion is the first criterion; when the number of times the wireless connection problem occurs at the first node is greater than the first value, the target criterion is the second criterion.

[0045] As an embodiment, the benefits of the above method include: selecting a suitable criterion to determine the first cell according to the number of times the UE has the wireless connection problem, and shortening the interruption delay on the basis of selecting a good cell as much as possible.

[0046] As an embodiment, the benefits of the above method include: the more times the UE encounters the wireless connection problem, the looser the target criterion is, and the easier it is to select a cell.

[0047] According to one aspect of the present application, it is characterized by comprising:

[0048] determining that the radio connection problem occurs on the second cell; the behavior determining that the radio connection problem occurs on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell;

[0049] The priority of the first cell being higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information; and the first cell and the second cell are different.

[0050] As an embodiment, the characteristics of the above method include: when the first node encounters the wireless connection problem on the second cell, the priority of the second cell is reduced.

[0051] According to one aspect of the present application, it is characterized by comprising:

[0052] receiving a third signaling indicating a first candidate cell group, the first candidate cell group including at least one candidate cell, each candidate cell in the first candidate cell group being associated with a candidate condition and a candidate configuration;

[0053] The first cell is a candidate cell in the first candidate cell group.

[0054] According to one aspect of the present application, it is characterized by comprising:

[0055] receiving a first offset;

[0056] The target criterion is related to both the candidate condition corresponding to the first cell and the first offset.

[0057] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0058] sending a first message, wherein the first message is used to determine a first criterion and a second criterion;

[0059] Receiving a first signal on a first cell;

[0060] It is determined that the first cell meets a target criterion, and the target criterion is one of the first criterion or the second criterion; the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is that the first criterion or the second criterion is related to whether a wireless connection problem occurs to a recipient of the first message.

[0061] According to one aspect of the present application, it is characterized in that a second message is sent, wherein the second message indicates the target criterion.

[0062] According to one aspect of the present application, it is characterized by comprising:

[0063] Sending a first signaling, wherein the first signaling is used to determine a first time length; a relationship between a time interval during which the wireless connection problem occurs to the receiver of the first message and the first time length is used to determine the target criterion;

[0064] Wherein, the first time length includes at least 1 millisecond.

[0065] According to one aspect of the present application, it is characterized by comprising:

[0066] sending a second signaling, wherein the second signaling is used to determine a first value; a relationship between the number of times the wireless connection problem occurs to the receiver of the first message and the first value is used to determine the target criterion;

[0067] The first value is a non-negative integer.

[0068] According to one aspect of the present application, it is characterized in that

[0069] It is determined that the wireless connection problem occurs on the second cell; the occurrence of the wireless connection problem on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; the priority of the first cell is higher than the priority of the second cell and is used to determine that the second criterion does not include time information and location information; the first cell and the second cell are different.

[0070] According to one aspect of the present application, it is characterized by comprising:

[0071] Sending a third signaling, where the third signaling indicates a first candidate cell group, where the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration;

[0072] The first cell is a candidate cell in the first candidate cell group.

[0073] According to one aspect of the present application, it is characterized by comprising:

[0074] Send the first offset;

[0075] The target criterion is related to both the candidate condition corresponding to the first cell and the first offset.

[0076] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0077] A first receiver receives a first message, wherein the first message is used to determine a first criterion and a second criterion; determines that a first cell satisfies a target criterion, wherein the target criterion is one of the first criterion or the second criterion;

[0078] A first transmitter, sending a first signal on the first cell;

[0079] The first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is that the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node.

[0080] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0081] A second transmitter sends a first message, wherein the first message is used to determine the first criterion and the second criterion;

[0082] A second receiver receives a first signal on a first cell;

[0083] It is determined that the first cell meets a target criterion, and the target criterion is one of the first criterion or the second criterion; the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is that the first criterion or the second criterion is related to whether a wireless connection problem occurs to a recipient of the first message.

[0084] As an embodiment, compared with the traditional solution, this application has the following advantages:

[0085] -.Avoid interruption delay;

[0086] -.Restore wireless connection issues as soon as possible;

[0087] -. Improve the probability of successful cell selection;

[0088] -.It is helpful to choose a more suitable community. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0090] Figure 1 A flow chart showing the transmission of a first message and a first signal according to an embodiment of the present application;

[0091] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0092] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0093] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0094] Figure 5 A wireless signal transmission flow chart according to an embodiment of the present application is shown;

[0095] Figure 6 A wireless signal transmission flow chart according to another embodiment of the present application is shown;

[0096] Figure 7A flow chart showing a relationship between a time interval in which a wireless connection problem occurs at a first node and a first time length according to an embodiment of the present application is used to determine a target criterion;

[0097] Figure 8 A flowchart showing a relationship between the number of times a wireless connection problem occurs at a first node and a first value according to an embodiment of the present application is used to determine a target criterion;

[0098] Fig. 9 A flowchart showing a relationship between the number of times a wireless connection problem occurs at a first node and a first value according to an embodiment of the present application is used to determine a target criterion;

[0099] Fig.10 A schematic diagram showing a relationship between the number of times a wireless connection problem occurs at a first node and a first value according to an embodiment of the present application;

[0100] Fig.11 A schematic diagram showing the relationship between a time interval at which a wireless connection problem occurs at a first node and a first time length according to an embodiment of the present application;

[0101] Fig.12 A structural block diagram of a processing device used in a first node according to an embodiment of the present application is shown;

[0102] Fig.13 A structural block diagram of a processing device used in a second node according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0103] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0104] Example 1

[0105] Embodiment 1 illustrates a flow chart of the transmission of a first message and a first signal according to an embodiment of the present application, as shown in the attached Figure 1 Attached Figure 1 In the figure, each box represents a step. It should be emphasized that the order of the boxes in the figure does not represent the temporal relationship between the steps represented.

[0106] In Example 1, the first node in the present application receives a first message in step 101, and the first message is used to determine a first criterion and a second criterion; determines that the first cell meets the target criterion, and the target criterion is one of the first criterion or the second criterion; in step 102, sends a first signal on the first cell; wherein the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node.

[0107] As an embodiment, a cell is an NTN cell, which means that a base station maintaining the cell is deployed in the air.

[0108] As an embodiment, a cell is an NTN cell means that a base station maintaining the cell is deployed in geostationary Earth Orbit (GEO), or airborne vehicles, or UAS (Unmanned Aircraft Systems), or LTA (Lighter than Air) UAS, or HTA (Heavier than Air) UAS, or spaceborne vehicles, or LEO (Low Earth Orbiting), or MEO (Medium Earth Orbiting), or HEO (Highly Elliptical Orbiting), or high altitude station (High Altitude Platform Station, HAPS), or NTN gateway (NTN-gateway), or satellite (Satellite).

[0109] As an embodiment, an NTN cell includes a beam.

[0110] As an embodiment, an NTN cell includes a PCI (Physical Cell Identity).

[0111] As an embodiment, one NTN cell includes multiple PCIs.

[0112] As an embodiment, an NTN cell includes at least one footprint.

[0113] As an embodiment, an NTN cell includes multiple beams.

[0114] As an embodiment, an NTN cell includes a CGI (Cell Global Identity).

[0115] As an embodiment, the first message is transmitted via an air interface.

[0116] As an embodiment, the first message is a higher layer message.

[0117] As an embodiment, the signaling radio bearer (SRB) of the first message includes SRB1.

[0118] As an embodiment, the first message signaling radio bearer includes SRB3.

[0119] As an embodiment, the first message includes at least one RRC (Radio Resource Control) message.

[0120] As an embodiment, the first message includes at least one IE (Information Element).

[0121] As an embodiment, the first message includes at least one field.

[0122] As an embodiment, an RRC message in the first message includes SIB2 (System Information Block 2).

[0123] As an embodiment, the first message includes at least one of SIB1 or SIB2 or SIB3 or SIB4 or SIB5.

[0124] As an embodiment, the first message includes SIBxx, where xx is equal to one of 15 to 30.

[0125] As an embodiment, the first message includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

[0126] As an embodiment, the first message includes an IE, and the name of the IE includes CellGroupConfig.

[0127] As an embodiment, the first message includes an IE, and the name of the IE includes CondReconfigToAddModList or CondReconfigurationToAddModList.

[0128] As an embodiment, the first message includes an IE, and the name of the IE includes CondReconfigId or condReconfigurationId.

[0129] As an embodiment, the first message includes a field, and the name of the field includes condExecutionCond or triggerCondition.

[0130] As an embodiment, the first message includes a domain, and the name of the domain includes condRRCReconfig or condReconfigurationToApply.

[0131] As an embodiment, the first message includes a domain, and the name of the domain includes ReconfigurationWithSync or mobilityControlInfo.

[0132] As an embodiment, the first message includes a domain, and the name of the domain includes t304.

[0133] As an embodiment, the first message includes an IE, and the name of the IE includes ConditionalReconfiguration.

[0134] As an embodiment, the first message includes a field, the name of the field includes attemptCondReconfig or attemptCondReconf, and the value of the field is set to true.

[0135] As an embodiment, the phrase that the first message is used to determine the first criterion and the second criterion includes: the first message is used to configure the first criterion and the second criterion.

[0136] As an embodiment, the phrase that the first message is used to determine the first criterion and the second criterion includes: the first message indicates the first criterion and the second criterion.

[0137] As an embodiment, the phrase said first message is used to determine a first criterion and a second criterion includes: one RRC message in said first message is used to determine said first criterion, and another RRC message in said first message is used to determine said second criterion.

[0138] As a sub-embodiment of this embodiment, the one RRC message and the another RRC message belong to different RRC messages.

[0139] As a sub-embodiment of this embodiment, the one RRC message and the another RRC message belong to the same RRC message.

[0140] As a sub-embodiment of this embodiment, the one RRC message and the another RRC message are received simultaneously.

[0141] As a sub-embodiment of this embodiment, the one RRC message and the another RRC message are not received at the same time.

[0142] As an embodiment, the conditional reconfiguration is for PCell (Primary Cell).

[0143] As an embodiment, the conditional reconfiguration is for a master cell of an MCG (Master Cell Group).

[0144] As an embodiment, the conditional reconfiguration includes CHO (Conditional Handover).

[0145] As an embodiment, the conditional reconfiguration is CHO.

[0146] As an embodiment, the first criterion is valid for NTN cells.

[0147] As an embodiment, the first criterion is only for NTN cells.

[0148] As an embodiment, the second criterion includes a cell reselection criterion (Cell Reselection Criterion).

[0149] As an embodiment, the second criterion includes a conditional reconfiguration execution condition.

[0150] As an embodiment, the second criterion is valid for TN cells.

[0151] As an embodiment, the second criterion is valid for NTN cells.

[0152] As an embodiment, the second criterion is valid for both TN cells and NTN cells.

[0153] As an embodiment, the conditional reconfiguration execution condition includes: an execution condition that needs to be met in order to trigger the execution of a conditional reconfiguration (The first criterion is the execution condition that needs to be fulfilled in order to trigger the execution of a conditional reconfiguration).

[0154] As an embodiment, for an NTN cell, the first node follows the first criterion.

[0155] As an embodiment, for an NTN cell, the first node follows the first criterion or the second criterion.

[0156] As an embodiment, for a TN cell, the first node does not follow the first criterion.

[0157] As an embodiment, for an NTN cell, the first node is configured with the first criterion and the second criterion at the same time.

[0158] As a sub-embodiment of this embodiment, for the one NTN cell, the first node does not follow the first criterion and the second criterion at the same time.

[0159] As a sub-embodiment of this embodiment, for the one NTN cell, the first node complies with the first criterion and the second criterion at the same time.

[0160] As an embodiment, an NTN cell is configured with one of the first criterion or the second criterion.

[0161] As an embodiment, the behavior of determining the first cell according to a target criterion includes determining that the first cell satisfies the target criterion.

[0162] As a sub-embodiment of the above embodiment, the target criterion is the second criterion, and the first cell is a cell with the highest RSRP (Reference Signal Received Power).

[0163] As a sub-embodiment of the above embodiment, the target criterion is the second criterion, and the first cell is a cell with the second highest RSRP.

[0164] As a sub-embodiment of the above embodiment, the target criterion is the first criterion, and the first cell is any cell among all detected cells.

[0165] As a sub-embodiment of the above embodiment, the target criterion is the first criterion, and the first cell is any cell among all detected cells that are not in the blacklist.

[0166] As an embodiment, the first cell is a non-serving cell that meets the target criteria.

[0167] As an embodiment, the first cell is a cell that meets the target criterion.

[0168] As an embodiment, the behavior of determining that the first cell meets the target criterion includes: selecting the first cell according to the target criterion.

[0169] As an embodiment, the behavior of determining that the first cell meets the target criteria includes: when the first cell meets the target criteria, selecting the first cell.

[0170] As an embodiment, the behavior of determining that the first cell meets the target criterion includes: evaluating the target criterion according to Section 5.3.5.13.4 of document 3GPP TS38.331; wherein the target criterion is a CHO execution condition associated with the first cell.

[0171] As an embodiment, the behavior of determining that the first cell meets the target criterion includes: determining that the first cell meets the target criterion according to a trigger quantity included in the target criterion.

[0172] As an embodiment, the behavior of determining that the first cell satisfies the target criterion includes: determining that the first cell satisfies the first criterion; wherein, the wireless connection problem occurs at the first node, and the target criterion is the first criterion.

[0173] As an embodiment, the behavior of determining that the first cell meets the target criterion includes: determining that the first cell meets the second criterion; wherein, the first node does not have the wireless connection problem, and the target criterion is the second criterion.

[0174] As an embodiment, the behavior of determining that the first cell meets the target criterion includes: determining that the first cell meets the first criterion; wherein, the first node does not have the wireless connection problem, and the target criterion is the first criterion.

[0175] As an embodiment, the behavior of determining that the first cell meets the target criterion includes: determining that the first cell meets the second criterion; wherein, the wireless connection problem occurs at the first node, and the target criterion is the second criterion.

[0176] As an embodiment, the behavior of determining that the first cell meets the target criterion includes: evaluating the first cell according to the target criterion to determine that the first cell meets the target criterion.

[0177] As an embodiment, the behavior of determining that the first cell satisfies the target criterion includes: determining that the first cell satisfies the Q1 first-type inequality constraints and the Q2 second-type inequality constraints; wherein the target criterion is the first criterion.

[0178] As an embodiment, the behavior of determining that the first cell satisfies a target criterion includes: determining that the first cell satisfies the Q1 first-type inequality constraints; wherein the target criterion is the second criterion.

[0179] As an embodiment, the phrase the target criterion is one of the first criterion or the second criterion includes: the target criterion is determined in the first criterion and the second criterion.

[0180] As an embodiment, the phrase the target criterion is one of the first criterion or the second criterion includes: the target criterion is the first criterion or the second criterion.

[0181] As an embodiment, the phrase that the target criterion is one of the first criterion or the second criterion includes: the target criterion is not a criterion other than the first criterion and the second criterion.

[0182] As an embodiment, the first cell includes a target cell.

[0183] As an embodiment, the first cell includes a CHO candidate cell (target cell).

[0184] As an embodiment, the first cell is a cell that meets the target criterion.

[0185] As an embodiment, the first cell is any one of a plurality of cells that meet the target criteria.

[0186] As an embodiment, the first cell is the best cell (bset cell) among multiple cells that meet the target criterion.

[0187] As an embodiment, the first cell is the highest ranked cell among multiple cells that meet the target criteria according to RSRP or RSRQ (Reference Signal Received Quality) or SINR (Signal to Interference plus Noise Ratio).

[0188] As an embodiment, the first cell is an acceptable cell (acceptable cell), and the acceptable cell is defined in reference document 3GPP TS 38.304.

[0189] As an embodiment, the first cell is a suitable cell (suitable cell), and the suitable cell is defined in reference document 3GPP TS 38.304.

[0190] As an embodiment, the first signal is transmitted through an air interface.

[0191] As an embodiment, the first signal is a physical layer signal.

[0192] As an embodiment, the first signal is an RRC message.

[0193] As an embodiment, the first signal includes a MAC (Medium Access Control) PDU (Protocol Data Unit).

[0194] As an embodiment, the first signal includes MAC CE (Control Element).

[0195] As an embodiment, the first signal includes PUSCH.

[0196] As an embodiment, the first signal includes PRACH.

[0197] As an embodiment, the signaling radio bearer of the first signal includes SRB0.

[0198] As an embodiment, the signaling radio bearer of the first signal includes SRB1.

[0199] As an embodiment, the phrase sending a first signal on the first cell includes: the first signal is associated with the first cell.

[0200] As an embodiment, the phrase sending a first signal on the first cell includes: the first signal is sent on the first cell.

[0201] As an embodiment, the phrase sending a first signal on the first cell includes: the first signal is sent using resources of the first cell.

[0202] As an embodiment, the phrase sending a first signal on the first cell includes: time and frequency resources of the first signal are allocated by the first cell.

[0203] As an embodiment, the phrase sending a first signal on the first cell includes: an identifier of the first signal is allocated by the first cell.

[0204] As an embodiment, the phrase that the first signal is used to establish a connection with the first cell includes: the first signal is used in a random access procedure.

[0205] As a sub-embodiment of this embodiment, the first signal includes at least a random access (Random Access) preamble (Preamble).

[0206] As a subsidiary embodiment of this sub-embodiment, the random access preamble includes a bit string.

[0207] As a subsidiary embodiment of this sub-embodiment, the random access preamble includes a sequence.

[0208] As a subsidiary embodiment of this sub-embodiment, the random access preamble is transmitted on PRACH (Physical Random Access Channel).

[0209] As a subsidiary embodiment of this sub-embodiment, the random access preamble includes a RACH (Random Access Channel) signal.

[0210] As a subsidiary embodiment of this sub-embodiment, the random access preamble includes a physical layer signal.

[0211] As a sub-embodiment of this embodiment, the first signal includes Msg1 (Message 1) of a 4-step random access (4-stepRA) process.

[0212] As a sub-embodiment of this embodiment, the first signal includes MsgA (Message A) of a 2-step random access (2-stepRA) process.

[0213] As a sub-embodiment of this embodiment, the first signal only includes a random access preamble.

[0214] As a sub-embodiment of this embodiment, the first signal includes a random access preamble and a given load, and the given load is transmitted on a PUSCH (Physical Uplink Shared Channel).

[0215] As an embodiment, the phrase "the first signal is used to establish a connection with the first cell" includes: the first signal is used to confirm the successful completion of an RRC connection reconfiguration (The first signal is used to confirm the successful completion of an RRC connection reconfiguration), and the RRC connection reconfiguration includes synchronous reconfiguration (ReconfigurationWithSync).

[0216] As a sub-embodiment of this embodiment, the first signal is used to determine that the RRC connection reconfiguration for the first cell in the first message is successfully completed.

[0217] As a sub-embodiment of this embodiment, the first signal is used to determine that the configuration of the first cell is successfully applied.

[0218] As a sub-embodiment of this embodiment, the first signal includes an RRCReconfigurationComplete message.

[0219] As a sub-embodiment of this embodiment, the first signal includes an IE, and the name of the IE includes UE-MeasurementsAvailable.

[0220] As a sub-embodiment of this embodiment, the first signal includes a field, the name of the field includes rlf-InfoAvailable, and the value of the field is set to true.

[0221] As a sub-embodiment of this embodiment, the first signal includes a field, the name of the field includes at least one of succ, ho, or InfoAvailable, and the value of the field is set to true.

[0222] As an embodiment, the phrase the first signal is used to establish a connection with the first cell includes: the first signal is used to request the reestablishment of an RRC connection (The first signal is used to request the establishment of an RRC connection).

[0223] As a sub-embodiment of this embodiment, the first signal includes an RRCReestablishmentRequest message or an RRCConnectionReestablishmentRequest message.

[0224] As a sub-embodiment of this embodiment, the first signal includes ue-Identity.

[0225] As a sub-embodiment of this embodiment, the first signal includes ReestablishmentCause.

[0226] As a sub-embodiment of this embodiment, the first signal includes newUE-Identity.

[0227] As a sub-embodiment of this embodiment, the first signal indicates a C-RNTI (Cell Radio Network Temporary Identifier).

[0228] As an embodiment, in response to the behavior determining that the first cell meets the target criteria, the first signal is sent on the first cell.

[0229] As an embodiment, in response to the behavior determining that the first cell meets the target criteria, the candidate configuration corresponding to the first cell is applied; in response to the candidate configuration corresponding to the first cell being applied, the first signal is sent on the first cell.

[0230] As a sub-embodiment of this embodiment, the candidate configuration corresponding to the first cell includes the configuration in the ReconfigurationWithSync domain or mobilityControlInfo.

[0231] As a subsidiary embodiment of this sub-embodiment, the candidate configuration corresponding to the first cell is configured by the third signaling.

[0232] As a subsidiary embodiment of this sub-embodiment, the candidate configuration corresponding to the first cell is configured by a field in the RRC message, and the name of the field includes condRRCReconfig.

[0233] As a subsidiary embodiment of this sub-embodiment, the first signal includes an RRCReconfigurationComplete message or an RRCConnectionReconfigurationComplete message.

[0234] As a subsidiary embodiment of this sub-embodiment, the first signal includes a preamble.

[0235] As a sub-embodiment of this embodiment, the candidate configuration corresponding to the first cell includes a default configuration, and the default configuration includes a default L1 parameter value, or the default MAC cell group configuration in Section 9.2.2 of document 3GPP TS38.331, or the default CCCH configuration in Section 9.1.1.2 of document 3GPP TS38.331, or at least one of timeAlignmentTimerCommon in SIB1.

[0236] As a subsidiary embodiment of this sub-embodiment, the first signal includes an RRCReestablishmentRequest message or an RRCConnectionReestablishmentRequest message.

[0237] As a subsidiary embodiment of this sub-embodiment, the first signal includes a preamble.

[0238] As an embodiment, the time information includes at least one moment.

[0239] As an embodiment, the time information includes at least one timer.

[0240] As an embodiment, the time information includes a system frame number (System Frame Number, SFN).

[0241] As an embodiment, the time information includes Universal Time Coordinated (UTC).

[0242] As an embodiment, the time information is related to satellite ephemeris.

[0243] As an embodiment, the time information is related to the satellite ephemeris and the position of the first node.

[0244] As an embodiment, the location information includes the location of the first node.

[0245] As an embodiment, the location information includes a geographic location.

[0246] As an embodiment, the location information includes a relative location.

[0247] As an embodiment, the location information includes an absolute location.

[0248] As an embodiment, the location information includes the distance between the first node and a reference point.

[0249] As a sub-embodiment of this embodiment, the reference point includes a cell center.

[0250] As a sub-embodiment of this embodiment, the reference point is a predefined position.

[0251] As a sub-embodiment of this embodiment, the reference point includes a reference point of a serving cell.

[0252] As a sub-embodiment of this embodiment, the reference point includes a reference point of the target cell.

[0253] As a sub-embodiment of this embodiment, the reference point includes a reference point of a candidate cell.

[0254] As a sub-embodiment of this embodiment, the reference point is configured through a network.

[0255] As a sub-embodiment of this embodiment, the reference point is obtained by calculating ephemeris information.

[0256] As an embodiment, the location information includes at least one of the longitude, latitude, or altitude of the first node.

[0257] As an embodiment, the location information includes an area identifier of an area where the first node is located.

[0258] As an embodiment, the reference signal (Reference Signal, RS) of the first cell includes CSI-RS (Channel State Information-Reference Signal), or SSB (Synchronization Signal Block), or at least one of SS (Synchronization Signal) / PBCH (Physical Broadcast Channel) blocks.

[0259] As an embodiment, the measurement result of the reference signal of the first cell includes at least one of RSRP, or RSRQ, or SINR, or RSCP (Received Signal Code Power), or EcN0.

[0260] As an embodiment, the measurement result of the reference signal of the first cell is RSRP.

[0261] As an embodiment, the measurement result of the reference signal of the first cell includes a cell measurement result of L3 (Layer 3) filtering.

[0262] As an embodiment, the first criterion also includes a measurement result of a reference signal of a serving cell.

[0263] As an embodiment, the second criterion also includes a measurement result of a reference signal of a serving cell.

[0264] As an embodiment, the serving cell includes a PCell.

[0265] As an embodiment, the service cell includes a source cell.

[0266] As an embodiment, the service cell includes a PSCell.

[0267] As an embodiment, the first criterion and the second criterion are configured through the same RRC message.

[0268] As an embodiment, the first criterion and the second criterion are configured through different RRC messages.

[0269] As an embodiment, the first criterion includes a cell selection criterion (Cell Selection Criterion, S criteria), and the second criterion includes another cell selection criterion.

[0270] As a sub-embodiment of this embodiment, the cell selection criterion refers to Section 5.2.3.2 of 3GPP TS 38.304.

[0271] As an embodiment, the first criterion includes a cell reselection criterion (Cell Reselection criteria, R criteria), and the second criterion includes another cell reselection criterion.

[0272] As an embodiment, the first criterion includes a CHO execution condition, and the second criterion includes another CHO execution condition.

[0273] As an embodiment, the first criterion includes a CHO execution condition, and the second criterion includes a cell selection criterion.

[0274] As an embodiment, the first criterion includes a CHO execution condition, and the second criterion includes a cell reselection criterion.

[0275] As an embodiment, the one CHO execution condition includes an entry condition.

[0276] As an embodiment, the first criterion is only used for NTN cells, and the second criterion is used for NTN cells and TN cells.

[0277] As an embodiment, the first criterion is only used for NTN cells, and the second criterion is used for NTN cells.

[0278] As an embodiment, the first criterion is only used for NTN cells, and the second criterion is used for TN cells.

[0279] As an embodiment, the first criterion includes an entering condition of an A3 event.

[0280] As an embodiment, the first criterion includes an entry condition of an A4 event (event A4).

[0281] As an embodiment, the first criterion includes an entry condition of an A5 event (event A5).

[0282] As an embodiment, the second criterion includes an entering condition of an A3 event.

[0283] As an embodiment, the second criterion includes an entry condition of an A4 event (event A4).

[0284] As an embodiment, the second criterion includes an entry condition of an A5 event (event A5).

[0285] As an embodiment, the first criterion includes Q1 first-type inequality constraints, and the first criterion includes Q2 second-type inequality constraints; Q1 is a positive integer, Q2 is a positive integer, Q1 is not greater than 8, and Q2 is not greater than 8.

[0286] As a sub-embodiment of this embodiment, Q1 is equal to 1 or Q1 is equal to 2.

[0287] As a sub-embodiment of this embodiment, Q2 is equal to 1 or Q2 is equal to 2.

[0288] As an embodiment, the first criterion includes Q1 first-type inequality constraints, and the first criterion is related to a given timer; Q1 is a positive integer, and Q1 is not greater than 8.

[0289] As an embodiment, the first criterion includes Q1 first-type inequality constraints, and the first criterion includes Q2 second-type inequality constraints, and the first criterion is related to a given timer; Q1 is a positive integer, Q2 is a positive integer, Q1 is not greater than 8, and Q2 is not greater than 8.

[0290] As an embodiment, the second criterion includes Q3 first-type inequality constraints, and the second criterion does not include a second-type inequality constraint; Q1 is a positive integer, and Q1 is not greater than 8.

[0291] As a sub-embodiment of this embodiment, Q3 is equal to 1 or Q3 is equal to 2.

[0292] As an embodiment, the behavior of determining that the first cell satisfies a target criterion includes: determining that the Q1 first-type inequality constraints and the Q2 first-type inequality constraints are all satisfied; wherein the target criterion is the first criterion.

[0293] As an embodiment, the behavior of determining that the first cell satisfies a target criterion includes: determining that all of the Q3 first-type inequality constraints are satisfied; wherein the target criterion is the second criterion.

[0294] As an embodiment, the first type of inequality includes measurement results of a reference signal of the first cell.

[0295] As an embodiment, the first type of inequality includes a measurement result of a reference signal of a PCell of the first node.

[0296] As an embodiment, the Q1 first-type inequality constraints include inequality constraint A3-1 (entry condition) in Section 5.5.4.4 of document 3GPP TS 38.331; wherein, Q1 is equal to 1.

[0297] As an embodiment, the Q1 first-type inequality constraints include inequality constraint A4-1 (entry condition) in Section 5.5.4.5 of document 3GPP TS 38.331; wherein, Q1 is equal to 1.

[0298] As an embodiment, the Q1 first-type inequality constraints include inequality constraint A5-1 (entry condition) and inequality constraint A5-2 (entry condition) in Section 5.5.4.6 of document 3GPP TS 38.331; wherein, Q1 is equal to 2.

[0299] As an embodiment, the Q3 first-type inequality constraints include inequality constraint A3-1 (entry condition) in Section 5.5.4.4 of document 3GPP TS 38.331; wherein, the Q3 is equal to 1.

[0300] As an embodiment, the Q3 first-type inequality constraints include inequality constraint A4-1 (entry condition) in Section 5.5.4.5 of document 3GPP TS 38.331; wherein, the Q3 is equal to 1.

[0301] As an embodiment, the Q3 first-type inequality constraints include inequality constraint A5-1 (entry condition) and inequality constraint A5-2 (entry condition) in Section 5.5.4.6 of document 3GPP TS 38.331; wherein, Q3 is equal to 2.

[0302] As an embodiment, at least one inequality constraint among the Q1 first-category inequality constraints in the first criterion is the same as at least one inequality constraint among the Q3 first-category inequality constraints in the second criterion.

[0303] As an embodiment, any inequality constraint among the Q1 first-category inequality constraints in the first criterion is different from any inequality constraint among the Q3 first-category inequality constraints in the second criterion.

[0304] As an embodiment, the second type of inequality constraint includes time information.

[0305] As an embodiment, the second type of inequality constraint includes position information.

[0306] As an embodiment, the second type of inequality constraints is related to timing information.

[0307] As an embodiment, the second type of inequality constraint is related to location information.

[0308] As an embodiment, the Q2 second type inequality constraints include: first distance < target distance threshold; wherein, Q2 is equal to 1.

[0309] As an embodiment, the Q2 second type inequality constraints include: first distance < target distance threshold, and second distance > given distance threshold; wherein, Q2 is equal to 2.

[0310] As an embodiment, the Q2 second-type inequality constraints include: first distance < second distance; wherein, Q2 is equal to 1.

[0311] As an embodiment, the first distance includes the distance from the first node to the cell center of the first cell.

[0312] As an embodiment, the first distance and the target distance threshold have the same unit.

[0313] As an embodiment, the first distance is determined based on satellite ephemeris and the geographic location of the first node.

[0314] As an embodiment, the first distance is determined by UE implementation.

[0315] As an embodiment, the first distance includes at least one offset.

[0316] As an embodiment, the second distance includes the distance from the first node to the cell center of the PCell.

[0317] As an embodiment, the second distance and the given distance threshold have the same unit.

[0318] As an embodiment, the second distance is determined based on satellite ephemeris and the geographic location of the first node.

[0319] As an embodiment, the second distance is determined by UE implementation.

[0320] As an embodiment, the second distance includes at least one offset.

[0321] As an embodiment, the target distance threshold is configurable.

[0322] As an embodiment, the target distance threshold includes at least one offset.

[0323] As an embodiment, the target distance threshold is a threshold.

[0324] As an embodiment, the given distance threshold is configurable.

[0325] As an embodiment, the given distance threshold includes at least one offset.

[0326] As an embodiment, the given distance threshold is a threshold.

[0327] As an embodiment, the Q2 second-type inequality constraints include: first ratio < target ratio threshold; wherein, Q2 is equal to 1.

[0328] As an embodiment, the Q2 second type inequality constraints include: first ratio < target ratio threshold, and second distance > given ratio threshold; wherein, Q2 is equal to 2.

[0329] As an embodiment, the Q2 second-type inequality constraints include: first ratio<second ratio; wherein, Q2 is equal to 1.

[0330] As an embodiment, the first ratio is equal to [the quotient of (the distance between the first node and the cell center of the first cell) and the coverage radius of the first cell].

[0331] As an embodiment, the second ratio is equal to [the quotient of (the distance between the first node and the cell center of the PCell) and the coverage radius of the PCell].

[0332] As an embodiment, the target ratio threshold is configurable.

[0333] As an embodiment, the target ratio threshold includes at least one offset.

[0334] As an embodiment, the target ratio threshold is a threshold.

[0335] As an embodiment, the target ratio threshold is a decimal between 0 and 1.

[0336] As an embodiment, the given ratio threshold is configurable.

[0337] As an embodiment, the given ratio threshold includes at least one offset.

[0338] As an embodiment, the given ratio threshold is a threshold.

[0339] As an embodiment, the given ratio threshold is a decimal between 0 and 1.

[0340] As an embodiment, the Q2 second-type inequality constraints include: first time value < target time length; wherein, Q2 is equal to 1.

[0341] As an embodiment, the Q2 second-type inequality constraints include: first time value < target time length, and second time value < given time length; wherein, Q2 is equal to 2.

[0342] As an embodiment, the first time value includes how long the first node can be served by the maintaining base station of the first cell.

[0343] As an embodiment, the second time value includes how long the first node can still be served by the base station maintaining the PCell.

[0344] As an embodiment, the target time length is configurable.

[0345] As an embodiment, the target time length includes at least one offset.

[0346] As an embodiment, the target time length is a threshold.

[0347] As an embodiment, the unit of the target time length is ms.

[0348] As an embodiment, the target time length is a non-negative integer.

[0349] As an embodiment, the target time length is configurable.

[0350] As an embodiment, the target time length includes at least one offset.

[0351] As an embodiment, the target time length is a threshold.

[0352] As an embodiment, the unit of the target time length is ms.

[0353] As an embodiment, the target time length is a non-negative integer.

[0354] As an embodiment, the phrase "the first criterion includes time information" includes: the first criterion is related to a given timer.

[0355] As a sub-embodiment of this embodiment, when a preconfigured time is reached, the given timer is started.

[0356] As a sub-embodiment of this embodiment, when a message is received, the given timer is started.

[0357] As a sub-embodiment of this embodiment, when another preconfigured time is reached, the given timer is stopped.

[0358] As a sub-embodiment of this embodiment, when starting to apply the one candidate configuration, the given timer is stopped.

[0359] As a sub-embodiment of this embodiment, the behavior of starting the given timer is related to at least one of time, satellite ephemeris, or the position of the first node.

[0360] As a sub-embodiment of this embodiment, the behavior of stopping the given timer is related to at least one of time, or satellite ephemeris, or the position of the first node.

[0361] As a sub-embodiment of this embodiment, the given timer is running and is used to determine that the first cell cannot provide service for the first node.

[0362] As a subsidiary embodiment of this sub-embodiment, when the given timer expires, the condition that the first criterion is related to time information is met.

[0363] As a subsidiary embodiment of this sub-embodiment, when the given timer expires, the Q1 first-type inequality constraints begin to be evaluated.

[0364] As a subsidiary embodiment of this sub-embodiment, when the given timer expires, the Q1 first-type inequality constraints and the Q2 second-type inequality constraints begin to be evaluated.

[0365] As a subsidiary embodiment of this sub-embodiment, the first criterion includes that the given timer is not running.

[0366] As a subsidiary embodiment of this sub-embodiment, the behavior of determining that the first cell satisfies the first criterion includes: determining that the given timer is not running.

[0367] As a sub-embodiment of this embodiment, the given timer is running and is used to determine that the first cell can provide service for the first node.

[0368] As a subsidiary embodiment of this sub-embodiment, the first criterion includes that the given timer is running.

[0369] As a subsidiary embodiment of this sub-embodiment, the behavior of determining that the first cell satisfies the first criterion includes: determining that the given timer is running.

[0370] As a subsidiary embodiment of this sub-embodiment, when the given timer is started, the condition that the first criterion is related to time information is met.

[0371] As a subsidiary embodiment of this sub-embodiment, when the given timer is started, the Q1 first-type inequality constraints begin to be evaluated.

[0372] As a subsidiary embodiment of this sub-embodiment, when the given timer is started, the Q1 first-type inequality constraints and the Q2 second-type inequality constraints begin to be evaluated.

[0373] As an embodiment, the sentence "the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell" includes: the trigger quality of the first criterion includes at least at least one of time information and location information, and a measurement result of a reference signal for the first cell.

[0374] As an embodiment, the sentence "the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell" includes: the measurement quality of the first criterion includes at least at least one of time information and location information, and a measurement result of a reference signal for the first cell.

[0375] As an embodiment, the sentence "The first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell" includes: the first criterion is related to at least one of time information and location information, and a measurement result of a reference signal for the first cell.

[0376] As an embodiment, the first criterion includes time information and a measurement result of a reference signal of the first cell.

[0377] As an embodiment, the first criterion includes location information and a measurement result of a reference signal of the first cell.

[0378] As an embodiment, the first criterion includes time information, location information and a measurement result of a reference signal of the first cell.

[0379] As an embodiment, the first criterion is related to time information and a measurement result of a reference signal of the first cell.

[0380] As an embodiment, the first criterion is related to location information and a measurement result of a reference signal of the first cell.

[0381] As an embodiment, the first criterion is related to time information, location information and a measurement result of a reference signal of the first cell.

[0382] As an embodiment, the sentence "the second criterion includes the measurement result of the reference signal for the first cell, and the second criterion does not include time information and location information" includes: the second criterion is related to the measurement result of the reference signal for the first cell, and is not related to time information and location information.

[0383] As an embodiment, the sentence that the target criterion is the first criterion or the second criterion is related to whether the first node has a wireless connection problem includes: whether the first node has the wireless connection problem is used to determine whether the target criterion is the first criterion or the second criterion.

[0384] As an embodiment, the sentence wherein the target criterion is the first criterion or the second criterion is related to whether the first node has a wireless connection problem, including: when the first node has the wireless connection problem, the target criterion is the second criterion; when the first node does not have the wireless connection problem, the target criterion is the first criterion.

[0385] As an embodiment, the sentence wherein the target criterion is the first criterion or the second criterion is related to whether the first node has a wireless connection problem, including: when the first node has the wireless connection problem, the target criterion is the first criterion; when the first node does not have the wireless connection problem, the target criterion is the second criterion.

[0386] As an embodiment, the wireless connection problem includes a synchronous reconfiguration failure (Reconfiguration with sync Failure).

[0387] As an embodiment, the wireless connection problem includes a radio link failure (Radio Link Failure, RLF).

[0388] As a sub-embodiment of this embodiment, when T310 expires in the source SpCell (upon T310 expiry in PCell), it is determined that the wireless connection problem occurs.

[0389] As a sub-embodiment of this embodiment, when T312 expires in the source SpCell (upon T312 expiry in PCell), it is determined that the wireless connection problem occurs.

[0390] As a sub-embodiment of this embodiment, upon receiving a random access problem indication from MCG MAC while neither T300, T301, T304, T311 nor T319 are running, it is determined that the wireless connection problem occurs.

[0391] As a sub-embodiment of this embodiment, when an indication is received from MCG RLC that the maximum number of retransmissions has been reached, it is determined that the radio connection problem has occurred.

[0392] As a sub-embodiment of this embodiment, if connected as an IAB (Integrated Access and Backhaul) node, when the BAP (Backhaul Adaptation Protocol) entity receives a BH (Backhaul) RLF indication from the MCG (if connected as an IAB-node, upon BH RLF indication received on BAP entity from the MCG), it is determined that the wireless connection problem occurs.

[0393] As a sub-embodiment of this embodiment, when a continuous uplink LBT (ListenBefore Talk) failure indication is received from MCG MAC while T304 is not running, it is determined that the wireless connection problem occurs.

[0394] As a sub-embodiment of this embodiment, the behavior for determining that the wireless connection problem occurs includes: considering that the MCG is detected as RLF, ie, MCG RLF.

[0395] As an embodiment, the wireless connection problem includes a handover failure (HOF).

[0396] As a sub-embodiment of this embodiment, when T304 of the MCG expires, it is determined that the wireless connection problem occurs.

[0397] As a sub-embodiment of this embodiment, when T304 of the SCG expires, it is determined that the wireless connection problem occurs.

[0398] As a sub-embodiment of this embodiment, when T307 of the SCG expires, it is determined that the wireless connection problem occurs.

[0399] As an embodiment, the wireless connection problem includes a conditional handover failure (CHOF).

[0400] As a sub-embodiment of this embodiment, the wireless connection problem includes a synchronous reconfiguration failure (Reconfiguration with sync Failure).

[0401] As an embodiment, the wireless connection problem includes no suitable cell is found.

[0402] As an embodiment, the wireless connection problem includes cell selection failure.

[0403] As an embodiment, a measurement result of a reference signal of the first cell being lower than a threshold is used to determine that the radio connection problem occurs; the threshold is configurable.

[0404] As an embodiment, the sum of the value of the first timer and the target offset is not less than the expiration value of the first timer, which is used to determine the occurrence of the wireless connection problem; wherein the target offset is an offset for the first timer, the target offset includes at least 1 millisecond, and the target offset is not greater than the expiration value of the first timer.

[0405] As a sub-embodiment of this embodiment, the first timer includes T310.

[0406] As a sub-embodiment of this embodiment, the first timer includes T304.

[0407] As a sub-embodiment of this embodiment, the first timer includes T312.

[0408] As a sub-embodiment of this embodiment, the first timer includes T311.

[0409] As an embodiment, an indication is received from a lower layer, which is used to determine that RLF is about to occur.

[0410] As a sub-embodiment of this embodiment, the lower layer includes a MAC layer.

[0411] As a sub-embodiment of this embodiment, the lower layer includes an RLC layer.

[0412] As a sub-embodiment of this embodiment, the lower layer includes a PHY layer.

[0413] As a sub-embodiment of this embodiment, the phrase that RLF is about to occur includes: the sum of the first counter and a given offset reaches the maximum value of the first counter; wherein the given offset is an offset for the first counter, the given offset is a non-negative integer, and the given offset is not greater than the maximum value of the first counter.

[0414] As a sub-embodiment of this embodiment, the first counter includes RETX_COUNT, the first counter is used to determine the number of RLC retransmissions, and the maximum value of the first counter includes maxRetxThreshold.

[0415] As a sub-embodiment of this embodiment, the first counter includes BFI_COUNTER, the first counter is used to determine the number of beam failure instance indications received from the physical layer, and the maximum value of the first counter includes beamFailureInstanceMaxCount.

[0416] As a sub-embodiment of this embodiment, the first counter includes LBT_COUNTER, the first counter is used to determine the number of LBT failure indications (LBT failure indication) received from the physical layer, and the maximum value of the first counter includes lbt-FailureInstanceMaxCount.

[0417] Example 2

[0418] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 Attached Figure 2The network architecture 200 of the 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system is illustrated. The 5G NR / LTE / LTE-A network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet switching services, but it will be readily understood by those skilled in the art that the various concepts presented throughout this application can be extended to networks or other cellular networks that provide circuit switching services. RAN includes node 203 and other nodes 204. Node 203 provides user and control plane protocol terminations toward UE 201. Node 203 can be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitting receiving node) or some other suitable terminology. Node 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.Node 203 is connected to 5GC / EPC210 via an S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is a control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocal) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-corresponding Internet protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and packet-switched streaming services.

[0419] As an embodiment, the UE201 corresponds to the first node in the present application.

[0420] As an embodiment, the UE201 is the first node in this application.

[0421] As an embodiment, the UE 201 is a user equipment (User Equipment, UE).

[0422] As an embodiment, the node 203 corresponds to the second node in the present application.

[0423] As an embodiment, the node 203 is the second node in this application.

[0424] As an embodiment, the node 203 is a base station (BS).

[0425] As an embodiment, the node 203 is a user equipment.

[0426] As an embodiment, the node 203 is a relay.

[0427] As an embodiment, the node 203 is a gateway.

[0428] As an embodiment, the node 204 corresponds to the third node in the present application.

[0429] As an embodiment, the node 204 is the third node in the present application.

[0430] As an embodiment, the node 204 is a base station (BS).

[0431] As an embodiment, the node 204 is a user equipment.

[0432] As an embodiment, the node 204 is a relay.

[0433] As an embodiment, the node 204 is a gateway.

[0434] As an embodiment, the user equipment supports transmission of a terrestrial network (Non-Terrestrial Network, NTN).

[0435] As an embodiment, the user equipment supports transmission of a non-terrestrial network (Terrestrial Network).

[0436] As an embodiment, the user equipment supports transmission in a network with a large delay difference.

[0437] As an embodiment, the user equipment supports dual connection (DC) transmission.

[0438] As an embodiment, the user equipment includes an aircraft.

[0439] As an embodiment, the user equipment includes a vehicle-mounted terminal.

[0440] As an embodiment, the user equipment includes a vessel.

[0441] As an embodiment, the user equipment includes an Internet of Things terminal.

[0442] As an embodiment, the user equipment includes a terminal of the industrial Internet of Things.

[0443] As an embodiment, the user equipment includes a device supporting low-latency and high-reliability transmission.

[0444] As an embodiment, the user equipment includes a test device.

[0445] As an embodiment, the user equipment includes a signaling tester.

[0446] As an embodiment, the base station device supports transmission in a non-terrestrial network.

[0447] As an embodiment, the base station device supports transmission in a network with a large delay difference.

[0448] As an embodiment, the base station device supports transmission of a terrestrial network.

[0449] As an embodiment, the base station device includes a macro cellular (Marco Cellular) base station.

[0450] As an embodiment, the base station device includes a micro cell base station.

[0451] As an embodiment, the base station device includes a pico cell (Pico Cell) base station.

[0452] As an embodiment, the base station device includes a home base station (Femtocell).

[0453] As an embodiment, the base station device includes a base station device that supports a large delay difference.

[0454] As an embodiment, the base station device includes a flying platform device.

[0455] As an embodiment, the base station device includes a satellite device.

[0456] As an embodiment, the base station device includes a TRP (Transmitter Receiver Point).

[0457] As an embodiment, the base station device includes a CU (Centralized Unit).

[0458] As an embodiment, the base station device includes a DU (Distributed Unit).

[0459] As an embodiment, the base station device includes a testing device.

[0460] As an embodiment, the base station equipment includes a signaling tester.

[0461] As an embodiment, the base station equipment includes an IAB (Integrated Access and Backhaul)-node.

[0462] As an embodiment, the base station device includes an IAB-donor.

[0463] As an embodiment, the base station device includes an IAB-donor-CU.

[0464] As an embodiment, the base station device includes an IAB-donor-DU.

[0465] As an embodiment, the base station device includes an IAB-DU.

[0466] As an embodiment, the base station device includes IAB-MT.

[0467] As an embodiment, the base station equipment includes a BTS (Base Transceiver Station, BTS).

[0468] As an embodiment, the base station device includes a Node B (NodeB, NB).

[0469] As an embodiment, the base station device includes a gNB.

[0470] As an embodiment, the base station device includes an eNB.

[0471] As an embodiment, the base station device includes ng-eNB.

[0472] As an embodiment, the base station device includes en-gNB.

[0473] As an embodiment, the relay includes a relay.

[0474] As an embodiment, the relay includes an L3 relay.

[0475] As an embodiment, the relay includes an L2 relay.

[0476] As an embodiment, the relay includes a router.

[0477] As an embodiment, the relay includes a switch.

[0478] As an embodiment, the relay includes a user equipment.

[0479] As an embodiment, the relay includes a base station device.

[0480] Example 3

[0481] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3 The radio protocol architecture for the control plane 300 is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY 301 herein. Layer 2 (L2 layer) 305 is above PHY 301 and includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides inter-zone mobility support. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and using RRC signaling to configure lower layers. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). In the user plane 350, the radio protocol architecture is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity.

[0482] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0483] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0484] As an example, Figure 3 The wireless protocol architecture in is applicable to the third node in this application.

[0485] As an embodiment, the first signal in the present application is generated by the RRC306.

[0486] As an embodiment, the first signal in the present application is generated by the MAC302 or MAC352.

[0487] As an embodiment, the first signal in the present application is generated by the PHY301 or PHY351.

[0488] As an embodiment, the first message in the present application is generated in the RRC306.

[0489] As an embodiment, the first message in the present application is generated by the MAC302 or MAC352.

[0490] As an embodiment, the first message in the present application is generated by the PHY301 or PHY351.

[0491] As an embodiment, the second message in the present application is generated in the RRC306.

[0492] As an embodiment, the second message in the present application is generated by the MAC302 or MAC352.

[0493] As an embodiment, the second message in the present application is generated by the PHY301 or PHY351.

[0494] As an embodiment, the first signaling in the present application is generated in the RRC306.

[0495] As an embodiment, the first signaling in the present application is generated by the MAC302 or MAC352.

[0496] As an embodiment, the first signaling in the present application is generated in the PHY301 or PHY351.

[0497] As an embodiment, the second signaling in the present application is generated in the RRC306.

[0498] As an embodiment, the second signaling in the present application is generated by the MAC302 or MAC352.

[0499] As an embodiment, the second signaling in the present application is generated in the PHY301 or PHY351.

[0500] As an embodiment, the third signaling in the present application is generated in the RRC306.

[0501] As an embodiment, the third signaling in the present application is generated by the MAC302 or MAC352.

[0502] As an embodiment, the third signaling in the present application is generated in the PHY301 or PHY351.

[0503] Example 4

[0504] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0505] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0506] The second communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0507] In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0508] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0509] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0510] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the reception function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0511] As an embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 at least: receives a first message, the first message is used to determine a first criterion and a second criterion; determines that the first cell meets a target criterion, the target criterion is one of the first criterion or the second criterion; sends a first signal on the first cell; wherein the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node.

[0512] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: receiving a first message, the first message being used to determine a first criterion and a second criterion; determining that a first cell satisfies a target criterion, the target criterion being one of the first criterion or the second criterion; sending a first signal on the first cell; wherein the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node.

[0513] As an embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 410 at least: sends a first message, the first message is used to determine a first criterion and a second criterion; receives a first signal on a first cell; wherein the first cell is determined to meet a target criterion, the target criterion is one of the first criterion or the second criterion; the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs to the recipient of the first message.

[0514] As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: sending a first message, the first message being used to determine a first criterion and a second criterion; receiving a first signal on a first cell; wherein the first cell is determined to meet a target criterion, the target criterion being one of the first criterion or the second criterion; the first criterion including at least one of time information and location information, and the first criterion including a measurement result of a reference signal for the first cell; the second criterion including a measurement result of a reference signal for the first cell, and the second criterion not including time information and location information; the first signal is used to establish a connection with the first cell; the target criterion being the first criterion or the second criterion being related to whether a wireless connection problem occurs to the recipient of the first message.

[0515] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive a first message; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a first message.

[0516] As an implementation, the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 are used to send a first signal; and at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a first signal.

[0517] As an implementation, the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 are used to send a second message; and at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a second message.

[0518] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive the first signaling; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send the first signaling.

[0519] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive a second signaling; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a second signaling.

[0520] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive a third signaling; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a third signaling.

[0521] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive a first offset; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a first offset.

[0522] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0523] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0524] As an embodiment, the second communication device 410 corresponds to the third node in this application.

[0525] As an embodiment, the first communication device 450 is a user equipment.

[0526] As an embodiment, the first communication device 450 is a terminal.

[0527] As an embodiment, the first communication device 450 is a user equipment supporting a large delay difference.

[0528] As an embodiment, the first communication device 450 is a user equipment supporting NTN.

[0529] As an embodiment, the first communication device 450 is an aircraft device.

[0530] As an embodiment, the first communication device 450 has a positioning capability.

[0531] As an embodiment, the first communication device 450 does not have a fixed energy capability.

[0532] As an embodiment, the first communication device 450 is a user equipment supporting TN.

[0533] As an embodiment, the second communication device 410 is a base station device (gNB / eNB / ng-eNB).

[0534] As an embodiment, the second communication device 410 is a user equipment.

[0535] As an embodiment, the second communication device 410 is a relay.

[0536] As an embodiment, the second communication device 410 is a base station device supporting a large delay difference.

[0537] As an embodiment, the second communication device 410 is a base station device supporting NTN.

[0538] As an embodiment, the second communication device 410 is a satellite device.

[0539] As an embodiment, the second communication device 410 is a flying platform device.

[0540] As an embodiment, the second communication device 410 is a base station device supporting TN.

[0541] Example 5

[0542] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0543] for First node U01In step S5101, a first signaling is received, and the first signaling is used to determine a first time length; in step S5102, a second signaling is received, and the second signaling is used to determine a first value; in step S5103, a first message is received, and the first message is used to determine a first criterion and a second criterion; in step S5104, it is determined that the first cell meets the target criterion, and the target criterion is one of the first criterion or the second criterion; in step S5105, a first signal is sent on the first cell; in step S5106, a second message is sent, and the second message indicates the target criterion.

[0544] for Second node N02 In step S5201, a first signaling is sent; in step S5202, a second signaling is sent; in step S5203, a first message is sent.

[0545] for The third node N03 In step S5301, a first signal is received; in step S5302, a second message is received.

[0546] In Example 5, the first criterion includes at least one of time information and location information, and the first criterion includes the measurement result of the reference signal of the first cell; the second criterion includes the measurement result of the reference signal of the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether the first node U01 has a wireless connection problem.

[0547] As an embodiment, the first node U01 is a user equipment.

[0548] As an embodiment, the first node U01 is a terminal.

[0549] As an embodiment, the second node N02 is a base station device.

[0550] As an embodiment, the second node N02 is a relay.

[0551] As an embodiment, the second node N02 is a user equipment.

[0552] As an embodiment, the second node N02 is a base station maintaining a service cell of the first node U01.

[0553] As an embodiment, the second node N02 is a maintaining base station of the second cell.

[0554] As an embodiment, the second node N02 is a base station maintaining the PCell of the first node.

[0555] As an embodiment, the second node N02 is a maintaining base station of a source service cell of the first node.

[0556] As an embodiment, the third node N03 is a base station device.

[0557] As an embodiment, the third node N03 is a relay.

[0558] As an embodiment, the third node N03 is a user equipment.

[0559] As an embodiment, the third node N03 is a base station maintaining a CHO candidate cell.

[0560] As an embodiment, the third node N03 is a maintaining base station of the first cell.

[0561] As an embodiment, the third node N03 is a maintaining base station of the second cell.

[0562] As an embodiment, the second node N02 is a maintaining base station of a source service cell of the first node U01; and the third node N03 is a maintaining base station of a target service cell of the first node U01.

[0563] As an embodiment, the second cell is a PCell.

[0564] As an embodiment, the second cell is a service cell of the first node.

[0565] As an embodiment, the second cell is a CHO candidate cell.

[0566] As an embodiment, the second cell is a target cell.

[0567] As an embodiment, the dashed box F5.1 is optional.

[0568] As an embodiment, the dashed box F5.1 exists.

[0569] As an embodiment, the dotted box F5.1 does not exist.

[0570] As an embodiment, the dashed box F5.2 is optional.

[0571] As an embodiment, the dashed box F5.2 exists.

[0572] As an embodiment, the dotted box F5.2 does not exist.

[0573] As an embodiment, the dashed box F5.3 is optional.

[0574] As an embodiment, the dashed box F5.3 exists.

[0575] As an embodiment, the dotted box F5.3 does not exist.

[0576] As an embodiment, one of the dashed box F5.1 and the dashed box F5.2 exists.

[0577] As an embodiment, both the dotted box F5.1 and the dotted box F5.2 exist.

[0578] As an embodiment, the dotted box F5.1 and the dotted box F5.2 do not exist.

[0579] As an embodiment, the phrase said second message indicates said target criteria includes: said second message is used to determine said target criteria.

[0580] As an embodiment, the phrase said second message indicating said target criteria includes: said second message including said target criteria.

[0581] As an embodiment, the phrase that the second message indicates the target criterion includes: the second message explicitly indicates the target criterion.

[0582] As an embodiment, the phrase that the second message indicates the target criterion includes: the second message implicitly indicates the target criterion.

[0583] As an embodiment, the phrase that the second message indicates the target criterion includes: the second message indicates whether the target criterion is the first criterion or the second criterion.

[0584] As an embodiment, the recipient of the second message includes a base station maintaining the first cell.

[0585] As an embodiment, the recipient of the second message includes a base station maintaining the current PCell of the first node U01.

[0586] As an embodiment, the recipient of the second message includes the second node N02.

[0587] As an embodiment, the recipient of the second message includes the third node N03.

[0588] As an embodiment, the recipient of the second message includes a node other than the second node N02 and the third node N03.

[0589] As an embodiment, the second message is used to report information stored by the first node U01 and requested by the network.

[0590] As an embodiment, the second message is an RRC message.

[0591] As a sub-embodiment of this embodiment, the RRC message is a UEInformationResponse message.

[0592] As a sub-embodiment of this embodiment, the RRC message is a ULInformationTransferMRDC message.

[0593] As a sub-embodiment of this embodiment, the one RRC message is an RRCReconfigurationComplete message or an RRCConnectionReconfigurationComplete message.

[0594] As an embodiment, the second message includes at least one IE in the one RRC message.

[0595] As an embodiment, the second message includes at least one field in the one RRC message.

[0596] As an embodiment, the second message includes a field in a UEInformationResponse message.

[0597] As an embodiment, the second message is a field in a UEInformationResponse message.

[0598] As an embodiment, the second message includes the target criteria.

[0599] As an embodiment, the second message indicates an identification of the target criterion.

[0600] As an embodiment, the second message indicates that the target criteria is for NTN or TN.

[0601] As an embodiment, the second message indicates whether the target criterion is related to satellite ephemeris.

[0602] As an embodiment, the second message indicates whether the target criterion is related to the location of the first node U01.

[0603] As an embodiment, the second message is a Boolean value.

[0604] As an embodiment, the second message is a positive integer.

[0605] As an embodiment, the second message is a non-negative integer.

[0606] As an embodiment, the second message is no greater than 16.

[0607] As an embodiment, the second message is no greater than 8.

[0608] As an embodiment, the second message is a true value (true) or a false value (false).

[0609] As an embodiment, the second message is equal to 0 or 1.

[0610] As an embodiment, the second message is set to a value indicating the first criterion, and the second message is set to another value indicating the second criterion, and the one value and the another value are different.

[0611] As an embodiment, the one value is equal to 1, and the other value is equal to 0.

[0612] As an embodiment, the one value is equal to 1, and the other value is equal to 0.

[0613] As an embodiment, the name of one value includes at least one of NTN or condition or cond or criterion or used or execute, and the name of the other value includes at least one of TN or condition or cond or criterion or used or execute.

[0614] As an embodiment, the second message is triggered by a UEInformationRequest message.

[0615] As an embodiment, the second message is sent as a response to receiving a UEInformationRequest message.

[0616] As an embodiment, when a UEInformationRequest message is received and a field in the UEInformationRequest message is set to true, the second message is sent.

[0617] As a sub-embodiment of this embodiment, the name of the domain includes rlf-ReportReq.

[0618] As a sub-embodiment of this embodiment, the name of the one domain includes mobilityHistoryReportReq.

[0619] As a sub-embodiment of this embodiment, the name of the one domain includes at least one of ho or ReportReq or succ, and the one domain is used to request switching information.

[0620] As an embodiment, the first signaling includes an RRC message.

[0621] As an embodiment, the first signaling includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

[0622] As an embodiment, the first signaling includes a SystemInformation message.

[0623] As an embodiment, the first signaling includes a SIB1 message or a SystemInformationBlockType1 message.

[0624] As an embodiment, the first signaling includes an IE in an RRC message.

[0625] As an embodiment, the first signaling includes a field in an RRC message.

[0626] As an embodiment, the first signaling includes a field in the RRC message, and the name of the field includes cellSelectionInfo.

[0627] As an embodiment, the phrase that the first signaling is used to determine a first time length includes: the first signaling explicitly indicates the first time length.

[0628] As an embodiment, the phrase that the first signaling is used to determine a first time length includes: the first signaling implicitly indicates the first time length.

[0629] As an embodiment, the phrase that the first signaling is used to determine a first time length includes: the first time length can be calculated by parameters in the first signaling.

[0630] As an embodiment, the phrase that the first signaling is used to determine a first time length includes: the first time length is configured by the first signaling.

[0631] As an embodiment, the first time length is configurable.

[0632] As an embodiment, the first time length is preconfigured.

[0633] As an embodiment, the first time length is no greater than 1000 milliseconds (ms).

[0634] As an embodiment, the first time length is no more than 100 seconds (s).

[0635] As an embodiment, the relationship between the time interval at which the wireless connection problem occurs in the first node U01 and the first time length is used to determine the target criterion; the first time length includes at least 1 millisecond; wherein the dotted box F5.1 exists.

[0636] As an embodiment, the phrase "the relationship between the time interval when the wireless connection problem occurs in the first node U01 and the first time length is used to determine the target criterion includes: the relationship between the time interval when the wireless connection problem occurs in the first node U01 and the first time length is used to determine whether the target criterion is the first criterion or the second criterion.

[0637] As an embodiment, the phrase "the relationship between the time interval when the wireless connection problem occurs in the first node U01 and the first time length" is used to determine the target criterion, including: whether the target criterion is the first criterion or the second criterion is related to the size relationship between the time interval when the wireless connection problem occurs in the first node U01 and the first time length.

[0638] As an embodiment, the phrase "the relationship between the time interval when the wireless connection problem occurs in the first node U01" and the first time length is used to determine the target criterion, including: the time interval when the wireless connection problem occurs in the first node U01 is less than the first time length, which is used to determine that the target criterion is the first criterion; the time interval when the wireless connection problem occurs in the first node U01 is not less than the first time length, which is used to determine that the target criterion is the second criterion.

[0639] As an embodiment, the phrase "the relationship between the time interval when the wireless connection problem occurs in the first node U01" and the first time length is used to determine the target criterion, including: "the time interval when the wireless connection problem occurs in the first node U01 is not less than the first time length" is used to determine that the target criterion is the first criterion; "the time interval when the wireless connection problem occurs in the first node U01" is less than the first time length" is used to determine that the target criterion is the second criterion.

[0640] As an embodiment, the meaning of “not less than” includes “greater than”.

[0641] As an embodiment, the meaning of “not less than” includes “greater than” or “equal to”.

[0642] As an embodiment, the second signaling includes an RRC message.

[0643] As an embodiment, the second signaling includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

[0644] As an embodiment, the second signaling includes a SystemInformation message.

[0645] As an embodiment, the second signaling includes a SIB1 message.

[0646] As an embodiment, the second signaling includes an IE in an RRC message.

[0647] As an embodiment, the second signaling includes a field in an RRC message.

[0648] As an embodiment, the second signaling includes a field in the RRC message, and the name of the field includes cellSelectionInfo.

[0649] As an embodiment, the second signaling is used to determine whether the target criterion is a threshold of the first criterion or the second criterion.

[0650] As an embodiment, the phrase that the second signaling is used to determine a first value includes: the second signaling explicitly indicates the first value.

[0651] As an embodiment, the phrase that the second signaling is used to determine a first value includes: the second signaling implicitly indicates the first value.

[0652] As an embodiment, the phrase that the second signaling is used to determine a first value includes: the first value can be calculated by using parameters in the second signaling.

[0653] As an embodiment, the phrase that the second signaling is used to determine the first value includes: the first value is configured through the second signaling.

[0654] As an embodiment, the first value is configurable.

[0655] As an embodiment, the first value is preconfigured.

[0656] As an embodiment, the first value is not greater than 64.

[0657] As an embodiment, the first value is not greater than 16.

[0658] As an embodiment, the first value is not greater than 8.

[0659] As an embodiment, the first value is equal to 2.

[0660] As an embodiment, the first value is equal to 1.

[0661] As an embodiment, the relationship between the number of times the wireless connection problem occurs in the first node U01 and the first value is used to determine the target criterion; the first value is a non-negative integer; wherein the dotted box F5.2 exists.

[0662] As an embodiment, the phrase "the relationship between the number of times the wireless connection problem occurs in the first node U01 and the first numerical value is used to determine the target criterion, including: the relationship between the number of times the wireless connection problem occurs in the first node U01 and the first numerical value is used to determine whether the target criterion is the first criterion or the second criterion.

[0663] As an embodiment, the phrase "the relationship between the number of times the wireless connection problem occurs in the first node U01 and the first numerical value" is used to determine the target criterion, including: whether the target criterion is the first criterion or the second criterion is related to the size relationship between the number of times the wireless connection problem occurs in the first node U01 and the first numerical value.

[0664] As an embodiment, the relationship between the phrase "the number of times the wireless connection problem occurs in the first node U01" and the first numerical value is used to determine the target criterion, including: the number of times the wireless connection problem occurs in the first node U01 is less than the first numerical value is used to determine that the target criterion is the first criterion; the number of times the wireless connection problem occurs in the first node U01 is not less than the first numerical value is used to determine that the target criterion is the second criterion.

[0665] As an embodiment, the relationship between the phrase "the number of times the wireless connection problem occurs in the first node U01" and the first numerical value is used to determine the target criterion, including: the number of times the wireless connection problem occurs in the first node U01 is not less than the first numerical value is used to determine that the target criterion is the first criterion; the number of times the wireless connection problem occurs in the first node U01 is less than the first numerical value is used to determine that the target criterion is the second criterion.

[0666] As an embodiment, the phrase "the number of times the wireless connection problem occurs to the first node U01" includes: the number of times the wireless connection problem occurs continuously to the first node U01 in the same cell.

[0667] As an embodiment, the phrase "the number of times the wireless connection problem occurs to the first node U01" includes: the number of times the wireless connection problem occurs continuously to the first node U01 in different cells.

[0668] As an embodiment, the phrase "the number of times the wireless connection problem occurs to the first node U01" includes: the number of times the wireless connection problem occurs continuously to the first node U01 in the same cell or in different cells.

[0669] As an embodiment, the number of times the wireless connection problem occurs in the first node U01 refers to the number of times the wireless connection problem occurs continuously.

[0670] As an embodiment, when the number of times the wireless connection problem occurs in the first node U01 is greater than 1, the causes of any two occurrences of the wireless connection problem are the same.

[0671] As an embodiment, when the number of times the wireless connection problem occurs in the first node U01 is greater than 1, the causes of any two wireless connection problems are different.

[0672] As an embodiment, when the number of times the wireless connection problem occurs in the first node U01 is greater than 1, the causes of any two wireless connection problems are the same or different.

[0673] As an embodiment, one cause of the wireless connection problem is RLF.

[0674] As an example, one cause of the wireless connection problem is HOF.

[0675] As an embodiment, one cause of the wireless connection problem is a synchronization reconfiguration failure.

[0676] Example 6

[0677] Embodiment 6 illustrates a wireless signal transmission flow chart according to another embodiment of the present application, as shown in the attached Figure 6 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0678] for First node U01 In step S6101, a third signaling is received, the third signaling indicating a first candidate cell group, the first candidate cell group including at least one candidate cell, each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; in step S6102, a first offset is received; in step S6103, a first message is received, the first message is used to determine a first criterion and a second criterion; in step S6104, it is determined that a wireless connection problem occurs on the second cell; in step S6105, it is determined that the first cell meets the target criterion, the target criterion is one of the first criterion or the second criterion; in step S6106, a first signal is sent on the first cell; in step S6107, a second message is sent, the second message indicates the target criterion.

[0679] for Second node N02 In step S6201, a third signaling is sent; in step S6202, a first offset is sent; in step S6203, a first message is sent.

[0680] for The third node N03 In step S6301, a first signal is received; in step S6302, a second message is received.

[0681] In embodiment 6, the first criterion includes at least one of time information and location information, and the first criterion includes the measurement result of the reference signal of the first cell; the second criterion includes the measurement result of the reference signal of the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether the first node U01 has a wireless connection problem.

[0682] As an embodiment, the dashed box F6.1 is optional.

[0683] As an embodiment, the dashed box F6.1 exists.

[0684] As an embodiment, the dotted box F6.1 does not exist.

[0685] As an embodiment, the dashed box F6.2 is optional.

[0686] As an embodiment, the dashed box F6.2 exists.

[0687] As an embodiment, the dotted box F6.2 does not exist.

[0688] As an embodiment, the dashed box F6.3 is optional.

[0689] As an embodiment, the dashed box F6.3 exists.

[0690] As an embodiment, the dotted box F6.3 does not exist.

[0691] As an embodiment, the dotted box F6.1 and the dotted box F6.2 do not exist.

[0692] As a sub-embodiment of this embodiment, a first receiver receives a first message, and the first message is used to determine a first criterion and a second criterion; determines that the wireless connection problem occurs on the second cell; determines that the first cell meets the target criterion, and the target criterion is one of the first criterion or the second criterion; a first transmitter sends a first signal on the first cell; wherein the behavior of determining that the wireless connection problem occurs on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result for a reference signal of the first cell; the second criterion includes a measurement result for a reference signal of the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether the wireless connection problem occurs on the first node U01; the priority of the first cell is higher than the priority of the second cell and is used to determine that the second criterion does not include time information and location information; the first cell and the second cell are different.

[0693] As an embodiment, the dotted box F6.1 exists, and the dotted box F6.2 does not exist.

[0694] As a sub-embodiment of this embodiment, a first receiver receives a first message, wherein the first message is used to determine a first criterion and a second criterion; receives a third signaling, wherein the third signaling indicates a first candidate cell group, wherein the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; determines that the first cell meets a target criterion, wherein the target criterion is one of the first criterion or the second criterion; a first transmitter sends a first signal on the first cell; wherein the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node U01; the first cell is a candidate cell in the first candidate cell group.

[0695] As an embodiment, both the dotted box F6.1 and the dotted box F6.2 exist.

[0696] As a sub-embodiment of this embodiment, a first receiver receives a first message, wherein the first message is used to determine a first criterion and a second criterion; receives a third signaling, wherein the third signaling indicates a first candidate cell group, wherein the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; determines that the radio connection problem occurs on the second cell; determines that the first cell satisfies a target criterion, wherein the target criterion is one of the first criterion or the second criterion; a first transmitter sends a first signal on the first cell; wherein the behavior determines that the radio connection problem occurs on the second cell and is used to determine that the priority of the first cell is higher than the priority of the second cell; The first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs with the first node U01; the priority of the first cell is higher than the priority of the second cell and is used to determine that the second criterion does not include time information and location information; the first cell and the second cell are different; the first cell is a candidate cell in the first candidate cell group.

[0697] As an embodiment, the phrase that the first cell and the second cell are different includes: the first cell is not the second cell.

[0698] As an embodiment, the phrase “the first cell and the second cell are different” includes: the first cell and the second cell are not the same cell.

[0699] As an embodiment, the phrase that the first cell and the second cell are different includes: the first cell is a cell other than the second cell.

[0700] As an embodiment, the first cell is a CHO candidate cell, and the second cell is a PCell.

[0701] As an embodiment, the first cell is a CHO candidate cell, and the second cell is another CHO candidate cell.

[0702] As an embodiment, the first cell is a CHO candidate cell, and the second cell is a target cell.

[0703] As an embodiment, the first cell is a cell determined through a cell selection process, and the second cell is a PCell.

[0704] As an embodiment, the first cell is a cell determined through a cell selection process, and the second cell is a CHO candidate cell.

[0705] As an embodiment, the first cell is a cell determined through a cell selection process, and the second cell is a target cell.

[0706] As an embodiment, the behavior of determining that the radio connection problem occurs on the second cell includes: considering that the second cell is detected as RLF; wherein the second cell is a PCell.

[0707] As an embodiment, the behavior of determining that the radio connection problem occurs on the second cell includes: considering that a cell group to which the second cell belongs is detected with RLF, and the cell group to which the second cell belongs is MCG; wherein the second cell is PCell.

[0708] As an embodiment, the behavior of determining that the radio connection problem occurs on the second cell includes: considering a CHOF for the second cell; wherein the second cell is a CHO candidate cell.

[0709] As an embodiment, the behavior of determining that the radio connection problem occurs on the second cell includes: considering a HOF for the second cell; wherein the second cell is a target cell.

[0710] As an embodiment, the sentence wherein the behavior of determining that the wireless connection problem occurs on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell includes: as a response to the behavior of determining that the wireless connection problem occurs on the second cell, the priority of the first cell is higher than the priority of the second cell.

[0711] As an embodiment, the sentence described in the behavior of determining that the wireless connection problem occurs on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell, including: when it is determined that the wireless connection problem occurs on the second cell, the priority of the first cell is higher than the priority of the second cell.

[0712] As an embodiment, the sentence wherein the behavior of determining that the wireless connection problem occurs on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell includes: the behavior of determining that the wireless connection problem occurs on the second cell causes the priority of the first cell to be higher than the priority of the second cell.

[0713] As an embodiment, the phrase "the priority of the first cell is higher than the priority of the second cell" includes: the ranking of the first cell is higher than the ranking of the second cell.

[0714] As an embodiment, the phrase that the priority of the first cell is higher than the priority of the second cell includes: the second cell is a cell in the CHO candidate cell list and the first cell is not a cell in the CHO candidate cell list is used to determine that the priority of the first cell is higher than the priority of the second cell.

[0715] As an embodiment, the phrase that the priority of the first cell is higher than the priority of the second cell includes: deleting the second cell in the CHO candidate cell list is used to determine that the priority of the first cell is higher than the priority of the second cell.

[0716] As an embodiment, the first cell is a cell with the highest priority.

[0717] As an embodiment, the first cell is a cell with the second highest priority, and the cell with the highest priority is not the second cell.

[0718] As an embodiment, the phrase "the priority of the first cell is higher than the priority of the second cell" is used to determine that the second criterion does not include time information and location information, and includes: "the priority of the first cell is higher than the priority of the second cell" is used to determine that the first cell is not determined based on time information and location information.

[0719] As an embodiment, the phrase "the priority of the first cell is higher than the priority of the second cell" is used to determine that the second criterion does not include time information and location information, and includes: "the priority of the first cell is higher than the priority of the second cell" is used to determine that the priority of the first cell is not determined based on time information and location information.

[0720] As an embodiment, the phrase "the priority of the first cell is higher than the priority of the second cell" is used to determine that the second criterion does not include time information and location information, including: the second criterion is related to the priority of the cell and has nothing to do with the time information and the location information.

[0721] As an embodiment, the phrase the priority of the first cell is higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information and includes: the second criterion includes that the priority of the first cell is higher than the priority of the second cell.

[0722] As an embodiment, the phrase that the priority of the first cell is higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information and includes: the second criterion includes selecting a cell that meets the cell selection criteria among cells outside the second cell.

[0723] As an embodiment, the phrase that the priority of the first cell is higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information, including: the second criterion includes determining a candidate cell that meets the execution condition among candidate cells outside the second cell.

[0724] As an embodiment, if the first cell satisfies the first type of inequality but does not satisfy the second type of inequality, and the second cell satisfies the first type of inequality and satisfies the second type of inequality, since the priority of the first cell is higher than the priority of the second cell, the second cell is selected and the first cell is not selected.

[0725] As an embodiment, the third signaling is used to add or modify the configuration of conditional reconfiguration.

[0726] As an embodiment, the conditional reconfiguration is conditional handover (CHO).

[0727] As an embodiment, the conditional reconfiguration is a PCell conditional change (Conditional PCellChange, CPC).

[0728] As an embodiment, the third signaling includes an RRC message.

[0729] As an embodiment, the third signaling includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

[0730] As an embodiment, the third signaling includes an IE in the RRC message, and the name of the IE includes ConditionalReconfiguration.

[0731] As an embodiment, the third signaling includes an IE in the RRC message, and the name of the IE includes CondReconfigToAddModList or CondReconfigurationToAddModList.

[0732] As an embodiment, the third signaling includes an IE in the RRC message, and the name of the IE includes CondReconfigId or condReconfigurationId.

[0733] As an embodiment, the third signaling includes an RRC message in the RRC message, and the name of the RRC message includes RRCReconfiguration or RRCConnectionReconfiguration.

[0734] As an embodiment, the third signaling includes a field in the RRC message, and the name of the field includes condExecutionCond or triggerCondition.

[0735] As an embodiment, the third signaling includes a field in the RRC message, and the name of the field includes condRRCReconfig or condReconfigurationToApply.

[0736] As an embodiment, the third signaling includes ConditionalReconfiguration, and the ConditionalReconfiguration includes condReconfigToAddModList or CondReconfigurationToAddModList.

[0737] As an embodiment, the phrase that the third signaling indicates the first candidate cell group includes: the third signaling is used to configure the first candidate cell group.

[0738] As an embodiment, the phrase that the third signaling indicates the first candidate cell group includes: the third signaling includes the configuration of at least one candidate cell in the first candidate cell group.

[0739] As an embodiment, the phrase that the third signaling indicates the first candidate cell group includes: the third signaling includes configurations of all candidate cells in the first candidate cell group.

[0740] As an embodiment, the phrase that the third signaling indicates the first candidate cell group includes: the third signaling includes the configuration of at least the first cell in the first candidate cell group.

[0741] As an embodiment, the phrase that the third signaling indicates the first candidate cell group includes: the third signaling includes the first candidate cell group.

[0742] As an embodiment, the phrase that the third signaling indicates the first candidate cell group includes: the third signaling includes a physical cell identifier (PCI) of each candidate cell in the first candidate cell group.

[0743] As an embodiment, the phrase that the first candidate cell group includes at least one candidate cell includes: the first candidate cell group includes one candidate cell or multiple candidate cells.

[0744] As an embodiment, the phrase that the first candidate cell group includes at least one candidate cell includes: the first candidate cell group includes at least the first cell.

[0745] As an embodiment, the first candidate cell group includes a maximum of 8 candidate cells.

[0746] As an embodiment, the first candidate cell group includes a maximum of 16 candidate cells.

[0747] As an embodiment, the first candidate cell group includes a maximum of 32 candidate cells.

[0748] As an embodiment, each candidate cell in the first candidate cell group corresponds to a conditional reconfiguration identifier (CondReconfigId), and the conditional reconfiguration identifier is a positive integer.

[0749] As a sub-embodiment of this embodiment, the conditional reconfiguration identifier is no greater than 8.

[0750] As a sub-embodiment of this embodiment, the conditional reconfiguration identifier is no greater than 16.

[0751] As a sub-embodiment of this embodiment, the conditional reconfiguration identifier is no greater than 32.

[0752] As an embodiment, the phrase each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration includes: each candidate cell in the first candidate cell group corresponds to a candidate condition and a candidate configuration respectively.

[0753] As an embodiment, a candidate condition corresponding to a candidate cell is associated with at least one measurement identifier (MeasId, MeasId).

[0754] As an embodiment, a candidate condition corresponding to a candidate cell includes a CHO triggering event.

[0755] As an embodiment, a candidate condition corresponding to a candidate cell includes a measurement report triggering event.

[0756] As an embodiment, the first criterion includes a candidate condition corresponding to the first cell; the second criterion includes another candidate condition corresponding to the first cell, and the first cell is a candidate cell in the first candidate cell group.

[0757] As an embodiment, the candidate condition is configured through a field in the third signaling, and the name of the field includes condExecutionCond or triggerCondition.

[0758] As an embodiment, the candidate configuration is configured through a field in the third signaling, and the name of the field includes condRRCReconfig or condReconfigurationToApply.

[0759] As an embodiment, a candidate condition and a candidate configuration associated with a candidate cell correspond to a condReconfigId or condReconfigurationId.

[0760] As an embodiment, the candidate conditions corresponding to the first cell include the first criterion and the second criterion.

[0761] As a sub-embodiment of this embodiment, when the first node U01 does not have the wireless connection problem, the candidate condition corresponding to the first cell is the first criterion.

[0762] As a sub-embodiment of this embodiment, when the wireless connection problem occurs in the first node U01, the candidate condition corresponding to the first cell is the second criterion.

[0763] As an embodiment, in response to the behavior determining that the first cell meets the target criteria, a candidate configuration corresponding to the first cell is applied.

[0764] As an embodiment, the phrase that the first cell is a candidate cell in the first candidate cell group includes: the first cell is a CHO candidate cell.

[0765] As an embodiment, the phrase that the first cell is a candidate cell in the first candidate cell group includes: the first cell is the only CHO candidate cell.

[0766] As an embodiment, the phrase that the first cell is a candidate cell in the first candidate cell group includes: the first cell is a candidate cell in a plurality of CHO candidate cells.

[0767] As an embodiment, the phrase that the first cell is a candidate cell in the first candidate cell group includes: the first cell is the only candidate cell that meets the candidate condition.

[0768] As an embodiment, the phrase that the first cell is a candidate cell in the first candidate cell group includes: the first cell is a candidate cell in a plurality of candidate cells that meet a candidate condition.

[0769] As an embodiment, the unit of the first offset is dBm.

[0770] As an embodiment, the unit of the first offset is meter.

[0771] As an embodiment, the unit of the first offset is milliseconds.

[0772] As an example, when the wireless connection problem occurs at the first node U01, the target criterion is related to both the candidate condition corresponding to the first cell and the first offset, and the target criterion is the second criterion.

[0773] As an example, when the wireless connection problem does not occur at the first node U01, the target criterion is related to the candidate condition corresponding to the first cell, and the target criterion is the first criterion.

[0774] As an example, the sum of the candidate condition corresponding to the first cell and the first offset is used to determine the target criterion.

[0775] As an example, the difference between the candidate condition corresponding to the first cell and the first offset is used to determine the target criterion.

[0776] As an example, the first type of inequality constraint in the candidate condition corresponding to the first cell includes: Mn + Ofn + Ocn – Hys > Mp + Ofp + Ocp + Off, and the first type of inequality constraint in the target criterion includes: Mn + Ofn + Ocn – Hys + the first offset > Mp + Ofp + Ocp + Off.

[0777] As an example, the first type of inequality constraint in the candidate condition corresponding to the first cell includes: Mn + Ofn + Ocn – Hys > Thresh, and the first type of inequality constraint in the target criterion includes: Mn + Ofn + Ocn – Hys + the first offset > Thresh.

[0778] As an example, the first type of inequality constraint in the candidate condition corresponding to the first cell includes: Mp + Hys < Thresh1 and Mn + Ofn + Ocn – Hys > Thresh2, and the first type of inequality constraint in the target criterion includes: Mp + Hys < Thresh1 and Mn + Ofn + Ocn – Hys + the first offset > Thresh2.

[0779] As an embodiment, a first receiver receives a third signaling, wherein the third signaling indicates a first candidate cell group, wherein the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; receives a first message, wherein the first message is used to determine a first criterion and a second criterion; determines that the first cell satisfies a target criterion; a first transmitter, as a response to the behavior determining that the first cell satisfies the target criterion, sends a first signal on the first cell; wherein the target criterion is the first criterion; the first cell is a candidate cell in the first candidate cell group; the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; and the first node U01 has no wireless connection problem.

[0780] As an embodiment, a first receiver receives a third signaling, wherein the third signaling indicates a first candidate cell group, wherein the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; receives a first message, wherein the first message is used to determine a first criterion and a second criterion; determines that the wireless connection problem occurs on a second cell; determines that the first cell satisfies a target criterion; a first transmitter sends a first signal on the first cell as a response to the behavior determining that the first cell satisfies the target criterion; wherein the target criterion is the second criterion; the first cell is a candidate cell in the first candidate cell group; the first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell.

[0781] As an embodiment, the first cell is an NTN cell.

[0782] As an embodiment, the first cell is a TN cell.

[0783] As an embodiment, the second cell is an NTN cell.

[0784] Example 7

[0785] Embodiment 7 illustrates a flow chart in which the relationship between the time interval at which the first node has a wireless connection problem and the first time length is used to determine a target criterion according to an embodiment of the present application.

[0786] In Embodiment 7, the first node determines in step S701 that a wireless connection failure occurs; in step S702, as a response to the behavior determining that a wireless connection failure occurs, initiates an RRC connection re-establishment process; in step S703, as a response to the behavior initiating the RRC connection re-establishment process, performs a cell selection process; in step S704, determines whether the time interval of the wireless connection failure occurring in the first node is less than a first time length; when the time interval of the wireless connection failure occurring in the first node is less than the first time length, proceeds to step S705(a), otherwise proceeds to step S705(b); in step S705(a), determines whether the first cell satisfies a first criterion, and when the first cell satisfies the first criterion, proceeds to step S706( a), otherwise, return to step S704; in step S705(b), determine whether the time interval for the occurrence of the wireless connection problem in the first node is less than the second time length; when the time interval for the occurrence of the wireless connection problem in the first node is less than the second time length, enter step S706(b), otherwise, enter step S706(c); in step S706(a), determine whether the first cell meets the first criterion; in step S706(b), determine whether the first cell meets the second criterion; when the first cell meets the second criterion, enter step S707, otherwise, return to step S704; in step S706(c), enter the RRC_IDLE state; in step S708, send a first signal on the first cell.

[0787] As an embodiment, the phrase "the target criterion is the first criterion or the second criterion is related to whether the first node has a wireless connection problem" includes: the target criterion is the first criterion or the second criterion is related to the relationship between the time interval between the occurrence of the wireless connection problem at the first node and the first time length.

[0788] As an embodiment, the phrase "the target criterion is the first criterion or the second criterion" is related to whether the first node has a wireless connection problem, including: when the time interval of the wireless connection failure of the first node is less than the first time length, the target criterion is the first criterion; when the time interval of the wireless connection failure of the first node is not less than the first time length, the target criterion is the second criterion.

[0789] As an embodiment, the behavior of initiating the RRC connection re-establishment process includes: starting timer T331.

[0790] As an embodiment, the behavior of initiating the RRC connection re-establishment process includes: if the timer T310 is running, stopping the timer T310.

[0791] As an embodiment, the behavior of initiating the RRC connection re-establishment process includes: if the timer T312 is running, stopping the timer T312.

[0792] As an embodiment, the behavior of initiating the RRC connection re-establishment process includes: starting timer T311.

[0793] As an embodiment, the behavior of initiating the RRC connection re-establishment process includes: if the first node is not configured with conditionalReconfiguration, resetting MAC.

[0794] As an embodiment, the behavior of initiating the RRC connection re-establishment process includes: if the first node is not configured with conditionalReconfiguration, suspending all RBs except SRB0.

[0795] Example 8

[0796] Embodiment 8 illustrates a flowchart in which the relationship between the number of times a wireless connection problem occurs at a first node and a first value is used to determine a target criterion according to an embodiment of the present application.

[0797] In Example 8, the first node determines in step S801 that the number of times the wireless connection problem occurs is equal to 0; in step S802, it is determined that the wireless connection problem occurs; in step S803, the number of times the wireless connection problem occurs is updated; in step S804, it is determined whether the number of times the wireless connection problem occurs at the first node is less than a first value; when the number of times the wireless connection problem occurs at the first node is less than the first value, the process proceeds to step S805(a), otherwise, the process proceeds to step S805(b); in step S805(a), it is determined whether there is a cell that meets the first criterion; when there is a cell that meets the first criterion, the process proceeds to step S806(a), otherwise, the process proceeds to step S806 (c); in step S805(b), determine whether there is a cell that meets the second criterion; when there is a cell that meets the second criterion, enter step S806(b), otherwise enter step S806(c); in step S806(a), determine whether the one cell meets the first criterion; in step S806(b), determine whether the one cell meets the second criterion; in step S806(c), execute the first process; in step S807, determine whether the wireless connection problem occurs; when it is determined that the wireless connection problem occurs, return to step S803, otherwise enter step S808; in step S808, send a first signal on the one cell.

[0798] As an embodiment, the phrase "the target criterion is the first criterion or the second criterion is related to whether the first node has a wireless connection problem" includes: the target criterion is the first criterion or the second criterion is related to the relationship between the number of times the wireless connection problem occurs at the first node and the first numerical value.

[0799] As an embodiment, the phrase "the target criterion is the first criterion or the second criterion" is related to whether the first node has a wireless connection problem and includes: when the number of times the wireless connection problem occurs to the first node is less than the first value, the target criterion is the first criterion; when the number of times the wireless connection problem occurs to the first node is not less than the first value, the target criterion is the second criterion.

[0800] As an embodiment, the behavior of executing the first process includes: entering the RRC_IDLE state.

[0801] As an embodiment, the behavior execution first process includes: returning to the step S804.

[0802] As an embodiment, the behavior executes the first process including: determining whether the number of times the wireless connection problem occurs at the first node is less than a second value; wherein the number of times the wireless connection problem occurs at the first node is not less than the first value.

[0803] As a sub-embodiment of this embodiment, when the number of times the wireless connection problem occurs at the first node is less than the second value, the process returns to step S805 (b).

[0804] As a sub-embodiment of this embodiment, when the number of times the wireless connection problem occurs in the first node is not less than the second value, the first node enters the RRC_IDLE state.

[0805] As a sub-embodiment of this embodiment, when the number of times the wireless connection problem occurs in the first node is not less than the second value, it enters the RRC_INACTIVE state.

[0806] As an embodiment, the behavior of executing the first process includes: returning to the source cell of the first node; wherein the radio connection failure is a handover failure (HOF), and the first cell is a target cell.

[0807] As an embodiment, the behavior execution first process includes: returning to the source cell of the first node; wherein the radio connection failure is a conditional handover failure (CHOF), and the first cell is a CHO candidate cell that meets the execution conditions.

[0808] As an embodiment, the first process when entering step S806(c) from step S805(a) is the same as the first process when entering step S806(c) from step S805(b).

[0809] As an embodiment, the first process when entering step S806(c) from step S805(a) is different from the first process when entering step S806(c) from step S805(b).

[0810] As an embodiment, step S801 and step S803 are implemented based on UE.

[0811] As an embodiment, step S801 and step S803 are implemented by a counter.

[0812] As an embodiment, the behavior of updating the number of times the wireless connection problem occurs includes: adding 1 to the number of times the wireless connection problem occurs.

[0813] As an embodiment, the behavior of updating the number of times the wireless connection problem occurs includes: adding 1 to the counter.

[0814] Example 9

[0815] Embodiment 9 illustrates a flowchart in which the relationship between the number of times a wireless connection problem occurs at a first node and a first value is used to determine a target criterion according to an embodiment of the present application.

[0816] In Example 9, the first node receives a third signaling in step S901, the third signaling indicating a first candidate cell group, the first candidate cell group including at least one candidate cell, each candidate cell in the first candidate cell group being associated with a candidate condition and a candidate configuration; in step S902, determining whether a wireless connection problem occurs to the first node on the second cell; when the wireless connection problem occurs to the first node on the second cell, proceeding to step S903(b), otherwise proceeding to step S903(a); in step S903(a), evaluating the first cell according to the first criterion; in step S903(b), evaluating the first cell according to the second criterion; in step S904(a), determining whether the first cell satisfies the first criterion; when the first cell satisfies the first criterion, proceeding to step S905(a), otherwise returning to step S902; in step S904(b), determining whether the first cell is whether the first cell satisfies the second criterion; when the first cell satisfies the second criterion, proceed to step S905(b), otherwise proceed to step S905(c); in step S905(a), determine whether the first cell satisfies the first criterion; in step S905(b), determine whether the first cell satisfies the second criterion; in step S905(c), execute the second process; in step S906, apply the candidate configuration corresponding to the first cell; in step S907, send a first signal on the first cell; wherein the first criterion includes at least one of time information and location information, and the first criterion includes the measurement result of the reference signal of the first cell; the second criterion includes the measurement result of the reference signal of the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the first cell is a candidate cell in the first candidate cell group.

[0817] As an embodiment, the phrase "the target criterion is the first criterion or the second criterion is related to whether the first node has a wireless connection problem, including: when the first node has the wireless connection problem on the second cell, the target criterion is the second criterion; when the first node does not have the wireless connection problem on the second cell, the target criterion is the first criterion.

[0818] As an embodiment, the behavior of executing the second process includes: entering the RRC_IDLE state.

[0819] As an embodiment, the behavior of executing the second process includes: executing the RRC connection re-establishment process.

[0820] As an embodiment, the behavior of executing the second process includes: returning to step S903 (b).

[0821] As an embodiment, if the wireless connection problem does not occur on the second cell, the first node evaluates the first cell according to the first criterion; if the wireless connection problem occurs on the second cell, the first node evaluates the first cell according to the second criterion.

[0822] As a sub-embodiment of this embodiment, the first criterion is a CHO execution condition, and the second criterion is a CHO execution condition.

[0823] As a sub-embodiment of this embodiment, the first criterion is a CHO execution condition, and the second criterion is a cell selection criterion.

[0824] As an embodiment, in response to the behavior determining that the wireless connection problem occurs on the second cell, an RRC connection re-establishment process is initiated; in response to the behavior initiating the RRC connection re-establishment process, a cell selection process (Cell Selection Process) is performed.

[0825] As a sub-embodiment of this embodiment, the behavior of executing the cell selection process includes: evaluating the first cell according to the second criterion.

[0826] As a sub-embodiment of this embodiment, the behavior of executing the cell selection process includes: evaluating whether there is a cell that meets the cell selection criteria.

[0827] As a sub-embodiment of this embodiment, the meaning of the cell selection refers to document 3GPP TS 38.304.

[0828] As an embodiment, in response to the behavior determining that the radio connection problem occurs on the second cell, a cell selection process is performed.

[0829] As an embodiment, in response to the behavior determining that the wireless connection problem occurs on the second cell, an RRC connection re-establishment process is initiated; in response to the behavior initiating the RRC connection re-establishment process, a conditional reconfiguration evaluation process is performed.

[0830] As a sub-embodiment of this embodiment, the behavior of executing the CHO evaluation process includes: evaluating the first cell according to the second criterion.

[0831] As a sub-embodiment of this embodiment, the behavior execution CHO evaluation process includes: for each candidate cell in the first candidate cell group, determining whether the corresponding candidate condition is met.

[0832] As a sub-embodiment of this embodiment, the meaning of the conditional reconfiguration evaluation refers to 5.3.5.13.4 of 3GPP TS38.331.

[0833] As an embodiment, in response to the behavior determining that the radio connection problem occurs on the second cell, a conditional reconfiguration evaluation process is performed.

[0834] As an embodiment, the behavior of evaluating the first cell according to the second criterion includes: determining whether the first cell satisfies the second criterion.

[0835] Example 10

[0836] Embodiment 10 illustrates a schematic diagram of the relationship between the number of times a wireless connection problem occurs at a first node and a first value according to an embodiment of the present application. The horizontal axis represents time, and T10.1, T10.2, T10.3, T10.4 and T10.5 are five moments increasing in time; at moment T10.1, the wireless connection failure occurs at the first node, and the number of times the wireless connection failure occurs at the first node is equal to 1; at moment T10.2, the wireless connection failure occurs at the first node, and the number of times the wireless connection failure occurs at the first node is equal to i; at moment T10.3, the wireless connection failure occurs at the first node, and the number of times the wireless connection failure occurs at the first node is equal to the first value; at moment T10.4, the wireless connection failure occurs at the first node, and the number of times the wireless connection failure occurs at the first node is equal to the sum of the first value and j; at moment T10.5, the wireless connection failure occurs at the first node, and the number of times the wireless connection failure occurs at the first node is equal to the second value; i is a non-negative integer, and i is not greater than the first value; j is a non-negative integer, and j is not greater than the difference between the second value and the first value.

[0837] In embodiment 10, the first node receives a second signaling, and the second signaling is used to determine a first value; the relationship between the number of times the wireless connection problem occurs at the first node and the first value is used to determine the target criterion; wherein the first value is a non-negative integer.

[0838] As an embodiment, the wireless connection failure occurs for the first time for the first node at the time T10.1.

[0839] As an embodiment, the wireless connection failure occurring in the first node at the time T10.1 includes RLF or HOF or CHOF.

[0840] As an embodiment, the wireless connection failure occurring at the first node at a time after T10.1 includes a failure to execute a reconfiguration with sync.

[0841] As an embodiment, the wireless connection failure occurring at the first node at a time after T10.1 includes a cell reselection failure.

[0842] As an embodiment, the wireless connection failure of the first node occurring at a time after T10.1 includes a configuration failure in applying reconfigurationWithSync.

[0843] As an embodiment, the wireless connection failure of the first node occurring at a time after T10.1 includes T304 expiration of MCG.

[0844] As an embodiment, the wireless connection failure of the first node occurring at a time after T10.1 includes expiration of T311 of the MCG.

[0845] As an embodiment, the wireless connection failure of the first node occurring at a time after T10.1 includes expiration of the second timer of the MCG.

[0846] As an embodiment, the wireless connection failure of the first node occurring at a time after T10.1 includes expiration of the third timer of the MCG.

[0847] As an embodiment, the first node fails to successfully establish an RRC connection from the time T10.1 to the time T10.5.

[0848] As an embodiment, the first node fails to successfully establish an RRC connection from the time T10.1 to the time T10.5.

[0849] As an embodiment, any two wireless connection failures of the first node occurring between the time T10.1 and the time T10.5 are for the same cell.

[0850] As an embodiment, the first node has at least two radio connection failures from the time T10.1 to the time T10.5 for different cells.

[0851] As an embodiment, the time T10.1, the time T10.2, the time T10.3, the time T10.4 and the time T10.5 are only used to illustrate the order in which the wireless connection failure occurs, and do not represent specific times.

[0852] As an embodiment, the time interval between any two consecutive wireless connection failures is the same.

[0853] As an embodiment, the time intervals between any two consecutive wireless connection failures are different.

[0854] Embodiment 11

[0855] Embodiment 11 illustrates a schematic diagram of the relationship between the time interval of the occurrence of a wireless connection problem in the first node and the first time length according to an embodiment of the present application. The horizontal axis represents time, T11.1, T11.2 and T11.3 are two moments increasing in time; at the moment T11.1, it is determined that the wireless connection failure occurs; the time interval between the moment T11.1 and the moment T11.2 is the first time length; the time interval between the moment T11.1 and the moment T11.3 is the second time length.

[0856] In embodiment 11, the first node receives a first signaling, and the first signaling is used to determine a first time length; the relationship between the time interval at which the wireless connection problem occurs at the first node and the first time length is used to determine the target criterion; wherein the first time length includes at least 1 millisecond.

[0857] As an embodiment, at the T11.1 moment, it is determined that the wireless connection failure occurs; as a response to the behavior determining that the wireless connection failure occurs, an RRC connection re-establishment process is initiated; as a response to the behavior initiating the RRC connection re-establishment process, a cell selection process is performed; before the T11.2 moment, the target criterion is the first criterion; after the T11.2 moment and before the T11.3 moment, the target criterion is the second criterion.

[0858] As a sub-embodiment of this embodiment, the RRC connection re-establishment process is initiated along with the behavior, and a second timer is started; the time interval between the T11.1 moment and the T11.3 moment includes the expiration value of the second timer.

[0859] As a subsidiary embodiment of this sub-embodiment, the second timer includes timer T311.

[0860] As a subsidiary embodiment of this sub-embodiment, at the time T11.3, the second timer reaches the expiration value of the second timer.

[0861] As a subsidiary embodiment of this sub-embodiment, the start time of the second timer is later than the T11.1 time.

[0862] As a subsidiary embodiment of this sub-embodiment, the RRC connection re-establishment process is initiated along with the behavior, and a third timer is started; the time interval between the T11.1 moment and the T11.2 moment includes the expiration value of the third timer.

[0863] As a subordinate embodiment of this subsidiary embodiment, at the time T11.2, the third timer reaches the expiration value of the third timer.

[0864] As a subsidiary embodiment of this sub-embodiment, the time interval between the time T11.1 and the time T11.2 includes a value of the second timer, and at the time T11.2, the second timer reaches the value of the second timer.

[0865] As an embodiment, the first time length is related to the timer T311.

[0866] As an embodiment, the first time length is not less than the expiration value of the timer T311.

[0867] As an embodiment, the first time length is not less than the product of K1 and the expiration value of the timer T311.

[0868] As an embodiment, the first time length is not greater than the second time length.

[0869] As an embodiment, the first time length is equal to the second time length.

[0870] As an embodiment, the first time length is shorter than the second time length.

[0871] As an embodiment, the second time length is equal to the expiration value of the timer T311.

[0872] As an embodiment, the second time length is equal to (the product of N1 and the expiration value of the timer T311); N1 is configurable, N1 is a positive integer, and N1 is not greater than 16.

[0873] As a sub-embodiment of this embodiment, N1 is equal to 1.

[0874] As a sub-embodiment of this embodiment, N1 is equal to 2.

[0875] As an embodiment, when the time interval during which the wireless connection problem occurs at the first node reaches the second time length, the first node enters the RRRC_IDLE state.

[0876] As an embodiment, when the time interval during which the wireless connection problem occurs at the first node reaches the second time length, it is determined that no suitable cell is found.

[0877] As an embodiment, the expiration value of the second timer refers to the maximum running time of the second timer.

[0878] As an embodiment, the expiration value of the second timer means that when the value of the second timer is equal to the expiration value of the second timer, the second timer expires.

[0879] As an embodiment, when the second timer is less than the one value of the second timer, the cell selection process is performed according to the first criterion; when the second timer is not less than the one value of the second timer and the second timer is less than the expiration value of the second timer, the cell selection process is performed according to the second criterion; the first criterion and the second criterion are both cell selection criteria.

[0880] As an embodiment, when the third timer is running, the cell selection process is performed according to the first criterion; when the third timer is not running and the second timer is running, the cell selection process is performed according to the second criterion; the first criterion and the second criterion are both cell selection criteria.

[0881] Example 12

[0882] Embodiment 12 illustrates a structural block diagram of a processing device used in a first node according to an embodiment of the present application; Fig.12 As shown in the attached Fig.12 In the embodiment, the processing device 1200 in the first node includes a first receiver 1201 and a first transmitter 1202.

[0883] A first receiver 1201 receives a first message, where the first message is used to determine a first criterion and a second criterion; determines that a first cell meets a target criterion, where the target criterion is one of the first criterion or the second criterion;

[0884] A first transmitter 1202 sends a first signal on the first cell;

[0885] In Example 12, the first criterion includes at least one of time information and location information, and the first criterion includes the measurement result of the reference signal of the first cell; the second criterion includes the measurement result of the reference signal of the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node.

[0886] As an embodiment, the first transmitter 1202 sends a second message, and the second message indicates the target criterion.

[0887] As an embodiment, the first receiver 1201 receives a first signaling, and the first signaling is used to determine a first time length; the relationship between the time interval when the wireless connection problem occurs at the first node and the first time length is used to determine the target criterion; wherein the first time length includes at least 1 millisecond.

[0888] As an embodiment, the first receiver 1201 receives a second signaling, and the second signaling is used to determine a first value; the relationship between the number of times the wireless connection problem occurs at the first node and the first value is used to determine the target criterion; wherein the first value is a non-negative integer.

[0889] As an embodiment, the first receiver 1201 determines that the wireless connection problem occurs in the second cell; the behavior determining that the wireless connection problem occurs in the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; wherein the priority of the first cell is higher than the priority of the second cell and is used to determine that the second criterion does not include time information and location information; the first cell and the second cell are different.

[0890] As an embodiment, the first receiver 1201 receives a third signaling, wherein the third signaling indicates a first candidate cell group, wherein the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; wherein the first cell is a candidate cell in the first candidate cell group.

[0891] As an embodiment, the first receiver 1201 receives a first offset; wherein the target criterion is related to both the candidate conditions corresponding to the first cell and the first offset.

[0892] As an embodiment, the first receiver 1201 includes the attached Figure 4 Antenna 452, receiver 454, multi-antenna reception processor 458, reception processor 456, controller / processor 459, memory 460 and data source 467.

[0893] As an embodiment, the first receiver 1201 includes the attached Figure 4 Antenna 452, receiver 454, multi-antenna receive processor 458, and receive processor 456.

[0894] As an embodiment, the first receiver 1201 includes the attached Figure 4 Antenna 452, receiver 454, and receive processor 456.

[0895] As an embodiment, the first transmitter 1202 includes the attached Figure 4 Antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0896] As an embodiment, the first transmitter 1202 includes the attached Figure 4 Antenna 452, transmitter 454, multi-antenna transmit processor 457, and transmit processor 468.

[0897] As an embodiment, the first transmitter 1202 includes the attached Figure 4 Antenna 452, transmitter 454, and transmit processor 468.

[0898] Embodiment 13

[0899] Embodiment 13 illustrates a structural block diagram of a processing device used in a second node according to an embodiment of the present application; Fig.13 As shown in the attached Fig.13 In the embodiment, the processing device 1300 in the second node includes a second transmitter 1301 and a second receiver 1302.

[0900] The second transmitter 1301 sends a first message, where the first message is used to determine the first criterion and the second criterion;

[0901] A second receiver 1302 receives a first signal on a first cell;

[0902] In Example 13, it is determined that the first cell meets the target criterion, and the target criterion is one of the first criterion or the second criterion; the first criterion includes at least one of time information and location information, and the first criterion includes the measurement result of the reference signal of the first cell; the second criterion includes the measurement result of the reference signal of the first cell, and the second criterion does not include time information and location information; the first signal is used to establish a connection with the first cell; the target criterion is that the first criterion or the second criterion is related to whether the recipient of the first message has a wireless connection problem.

[0903] As an embodiment, whether the first cell satisfies the target criteria is determined by a recipient of the first message.

[0904] As an embodiment, a second message is sent, the second message indicating the target criteria.

[0905] As an embodiment, the second message is sent by a recipient of the first message.

[0906] As an embodiment, the second receiver 1302 receives the second message, and the second message indicates the target criterion.

[0907] As an embodiment, the second message is received by a maintaining base station of the first cell.

[0908] As an embodiment, the second message is received by a base station maintaining a current serving cell of the first node.

[0909] As an embodiment, the second transmitter 1301 sends a first signaling, and the first signaling is used to determine a first time length; the relationship between the time interval during which the wireless connection problem occurs to the recipient of the first message and the first time length is used to determine the target criterion; wherein the first time length includes at least 1 millisecond.

[0910] As an embodiment, the second transmitter 1301 sends a second signaling, and the second signaling is used to determine a first value; the relationship between the number of times the wireless connection problem occurs to the recipient of the first message and the first value is used to determine the target criterion; wherein the first value is a non-negative integer.

[0911] As an embodiment, the occurrence of the wireless connection problem on the second cell is determined; the occurrence of the wireless connection problem on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; the priority of the first cell is higher than the priority of the second cell and is used to determine that the second criterion does not include time information and location information; the first cell and the second cell are different.

[0912] As an embodiment, the occurrence of the radio connection problem on the second cell is determined by a recipient of the first message.

[0913] As an embodiment, the second transmitter 1301 sends a third signaling, wherein the third signaling indicates a first candidate cell group, wherein the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; wherein the first cell is a candidate cell in the first candidate cell group.

[0914] As an embodiment, the second transmitter 1301 sends a first offset; wherein the target criterion is related to both the candidate conditions corresponding to the first cell and the first offset.

[0915] As an embodiment, the second transmitter 1301 includes the attached Figure 4Antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475, and memory 476.

[0916] As an embodiment, the second transmitter 1301 includes the attached Figure 4 Antenna 420, transmitter 418, multi-antenna transmit processor 471, and transmit processor 416.

[0917] As an embodiment, the second transmitter 1301 includes the attached Figure 4 Antenna 420, transmitter 418, and transmit processor 416.

[0918] As an embodiment, the second receiver 1302 includes the attached Figure 4 Antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller / processor 475, and memory 476.

[0919] As an embodiment, the second receiver 1302 includes the attached Figure 4 Antenna 420, receiver 418, multi-antenna receive processor 472, receive processor 470.

[0920] As an embodiment, the second receiver 1302 includes the attached Figure 4 Antenna 420, receiver 418, and receive processor 470.

[0921] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, Internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication, Machine Type Communication) terminals, eMTC (enhanced MTC, enhanced MTC) terminals, data cards, Internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system devices in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B) NR Node B, TRP (Transmitter Receiver Point) and other wireless communication devices.

[0922] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives a third signaling, the third signaling indicating a first candidate cell group, the first candidate cell group includes at least one candidate cell, each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; wherein the first cell is a candidate cell in the first candidate cell group; receives a first message, the first message is used to determine a first criterion and a second criterion; determines that the first cell meets a target criterion, the target criterion is one of the first criterion or the second criterion; A first transmitter, sending a first signal on the first cell; the first signal is used to establish a connection with the first cell; The first criterion includes only the latter of time information and location information, and the first criterion includes the measurement result of the reference signal of the first cell; the second criterion includes the measurement result of the reference signal of the first cell, and the second criterion does not include time information and location information; the time information includes the universal coordinated time; the target criterion is that the first criterion or the second criterion is related to whether the first node has a wireless connection problem.

2. The first node according to claim 1, characterized in that: include: The first transmitter sends a second message, wherein the second message indicates the target criterion.

3. The first node according to claim 1 or 2, characterized in that: include: The first receiver receives a first signaling, where the first signaling is used to determine a first time length; The relationship between the time interval at which the wireless connection problem occurs at the first node and the first time length is used to determine the target criterion; Wherein, the first time length includes at least 1 millisecond.

4. The first node according to any one of claims 1 to 3, characterized in that: include: The first receiver receives second signaling, where the second signaling is used to determine a first value; The relationship between the number of times the wireless connection problem occurs at the first node and the first value is used to determine the target criterion; The first value is a non-negative integer.

5. The first node according to any one of claims 1 to 4, characterized in that: include: The first receiver determines that the radio connection problem occurs on the second cell; the determination that the radio connection problem occurs on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; The priority of the first cell being higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information; and the first cell and the second cell are different.

6. The first node according to any one of claims 1 to 5, characterized in that: Each candidate cell in the first candidate cell group corresponds to a conditional reconfiguration identifier (CondReconfigId), and the conditional reconfiguration identifier is a positive integer; the conditional reconfiguration identifier is not greater than 8.

7. The first node according to any one of claims 1 to 6, characterized in that: include: The first receiver receives a first offset; The target criterion is related to both the candidate condition corresponding to the first cell and the first offset.

8. The first node according to any one of claims 1 to 7, characterized in that: The first message includes at least one RRC message; one RRC message in the first message is used to determine the first criterion, and another RRC message in the first message is used to determine the second criterion.

9. The first node according to any one of claims 1 to 8, characterized in that: The first message includes SIB1, and the first message includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

10. The first node according to any one of claims 1 to 9, characterized in that: The first message includes a field, a name of the field includes attemptCondReconfig or attemptCondReconf, and a value of the field is set to true.

11. The first node according to any one of claims 1 to 10, characterized in that: The wireless connection problem includes any one of a synchronization reconfiguration failure or a wireless link failure.

12. The first node according to any one of claims 1 to 11, characterized in that: If the radio connection problem does not occur on the second cell, the first node evaluates the first cell according to the first criterion; if the radio connection problem occurs on the second cell, the first node evaluates the first cell according to the second criterion; the second cell is a PCell.

13. The first node according to any one of claims 1 to 12, characterized in that: The first criterion includes a CHO execution condition, and the second criterion includes a cell selection criterion.

14. The first node according to any one of claims 1 to 13, characterized in that: The first criterion includes inequality constraints A5-1 and inequality constraints A5-2 in Section 5.5.4.6 of 3GPP TS 38.331, or inequality constraints A3-1 in Section 5.5.4.4 of 3GPP TS 38.331, or inequality constraints A4-1 in Section 5.5.4.5 of 3GPP TS 38.

331.

15. The first node according to any one of claims 1 to 14, characterized in that: The first criterion includes a first distance < target distance threshold, and a second distance > a given distance threshold; the first distance includes a distance from the first node to a cell center of the first cell; the second distance includes a distance from the first node to a cell center of a PCell.

16. A second node used for wireless communication, characterized in that: include: A second transmitter sends a third signaling, wherein the third signaling indicates a first candidate cell group, wherein the first candidate cell group includes at least one candidate cell, and each candidate cell in the first candidate cell group is associated with a candidate condition and a candidate configuration; wherein the first cell is a candidate cell in the first candidate cell group; and sends a first message, wherein the first message is used to determine a first criterion and a second criterion; A second receiver receives a first signal on the first cell; the first signal is used to establish a connection with the first cell; It is determined that the first cell meets a target criterion, and the target criterion is one of the first criterion or the second criterion; the first criterion includes only the latter of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the time information includes universal coordinated time; the target criterion is that the first criterion or the second criterion is related to whether a recipient of the first message has a wireless connection problem.

17. The second node according to claim 16, characterized in that: A second message is sent, the second message indicating the target criteria.

18. The second node according to claim 16 or 17, characterized in that: include: The second transmitter sends a first signaling, where the first signaling is used to determine a first time length; The relationship between the time interval during which the wireless connection problem occurs to the receiver of the first message and the first time length is used to determine the target criterion; Wherein, the first time length includes at least 1 millisecond.

19. The second node according to any one of claims 16 to 18, characterized in that: include: The second transmitter sends a second signaling, where the second signaling is used to determine the first value; The relationship between the number of times the wireless connection problem occurs to the recipient of the first message and the first value is used to determine the target criterion; The first value is a non-negative integer.

20. The second node according to any one of claims 16 to 19, characterized in that: The occurrence of the radio connection problem on the second cell is determined; the occurrence of the radio connection problem on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; The priority of the first cell being higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information; the first cell and the second cell are different.

21. The second node according to any one of claims 16 to 20, characterized in that: Each candidate cell in the first candidate cell group corresponds to a conditional reconfiguration identifier (CondReconfigId), and the conditional reconfiguration identifier is a positive integer; the conditional reconfiguration identifier is not greater than 8.

22. The second node according to any one of claims 16 to 21, characterized in that: include: The second transmitter sends a first offset; The target criterion is related to both the candidate condition corresponding to the first cell and the first offset.

23. The second node according to any one of claims 16 to 22, characterized in that: The first message includes at least one RRC message; one RRC message in the first message is used to determine the first criterion, and another RRC message in the first message is used to determine the second criterion.

24. The second node according to any one of claims 16 to 23, characterized in that: The first message includes SIB1, and the first message includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

25. The second node according to any one of claims 16 to 24, characterized in that: The first message includes a field, a name of the field includes attemptCondReconfig or attemptCondReconf, and a value of the field is set to true.

26. The second node according to any one of claims 16 to 25, characterized in that: The wireless connection problem includes any one of a synchronization reconfiguration failure or a wireless link failure.

27. The second node according to any one of claims 16 to 26, characterized in that: If the wireless connection problem does not occur on the second cell, the sender of the first signal evaluates the first cell according to the first criterion; if the wireless connection problem occurs on the second cell, the sender of the first signal evaluates the first cell according to the second criterion; the second cell is PCell.

28. The second node according to any one of claims 16 to 27, characterized in that: The first criterion includes a CHO execution condition, and the second criterion includes a cell selection criterion.

29. The second node according to any one of claims 16 to 28, characterized in that: The first criterion includes inequality constraints A5-1 and inequality constraints A5-2 in Section 5.5.4.6 of 3GPP TS 38.331, or inequality constraints A3-1 in Section 5.5.4.4 of 3GPP TS 38.331, or inequality constraints A4-1 in Section 5.5.4.5 of 3GPP TS 38.

331.

30. The second node according to any one of claims 16 to 29, characterized in that: The first criterion includes a first distance < target distance threshold, and a second distance > a given distance threshold; the first distance includes the distance from the sender of the first signal to the cell center of the first cell; the second distance includes the distance from the sender of the first signal to the cell center of the PCell.

31. A method in a first node for wireless communication, characterized in that: include: receiving a third signaling indicating a first candidate cell group, the first candidate cell group including at least one candidate cell, each candidate cell in the first candidate cell group being associated with a candidate condition and a candidate configuration; wherein the first cell is a candidate cell in the first candidate cell group; receiving a first message, the first message being used to determine a first criterion and a second criterion; determining that the first cell satisfies a target criterion, the target criterion being one of the first criterion or the second criterion; Sending a first signal on the first cell; the first signal is used to establish a connection with the first cell; The first criterion includes at least one of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the time information includes the Universal Coordinated Time; the target criterion is that the first criterion or the second criterion is related to whether a wireless connection problem occurs at the first node.

32. The method in a first node for wireless communication according to claim 31, characterized in that: include: A second message is sent, the second message indicating the target criteria.

33. The method in a first node used for wireless communication according to claim 31 or 32, characterized in that: include: receiving first signaling, wherein the first signaling is used to determine a first time length; The relationship between the time interval at which the wireless connection problem occurs at the first node and the first time length is used to determine the target criterion; Wherein, the first time length includes at least 1 millisecond.

34. The method in a first node for wireless communication according to any one of claims 31 to 33, characterized in that: include: receiving second signaling, wherein the second signaling is used to determine a first value; The relationship between the number of times the wireless connection problem occurs at the first node and the first value is used to determine the target criterion; The first value is a non-negative integer.

35. The method in a first node for wireless communication according to any one of claims 31 to 34, characterized in that: include: Determining that the radio connection problem occurs on the second cell; the determining that the radio connection problem occurs on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; The priority of the first cell being higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information; and the first cell and the second cell are different.

36. The method in a first node for wireless communication according to any one of claims 31 to 35, characterized in that: Each candidate cell in the first candidate cell group corresponds to a conditional reconfiguration identifier (CondReconfigId), and the conditional reconfiguration identifier is a positive integer; the conditional reconfiguration identifier is not greater than 8.

37. The method in a first node for wireless communication according to any one of claims 31 to 36, characterized in that: include: receiving a first offset; The target criterion is related to both the candidate condition corresponding to the first cell and the first offset.

38. The method in a first node for wireless communication according to any one of claims 31 to 37, characterized in that: The first message includes at least one RRC message; one RRC message in the first message is used to determine the first criterion, and another RRC message in the first message is used to determine the second criterion.

39. The method in a first node for wireless communication according to any one of claims 31 to 38, characterized in that: The first message includes SIB1, and the first message includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

40. The method in a first node for wireless communication according to any one of claims 31 to 39, characterized in that: The first message includes a field, a name of the field includes attemptCondReconfig or attemptCondReconf, and a value of the field is set to true.

41. The method in a first node for wireless communication according to any one of claims 31 to 40, characterized in that: The wireless connection problem includes any one of a synchronization reconfiguration failure or a wireless link failure.

42. The method in a first node for wireless communication according to any one of claims 31 to 41, characterized in that: If the radio connection problem does not occur on the second cell, the first node evaluates the first cell according to the first criterion; if the radio connection problem occurs on the second cell, the first node evaluates the first cell according to the second criterion; the second cell is a PCell.

43. The method in a first node for wireless communication according to any one of claims 31 to 42, characterized in that: The first criterion includes a CHO execution condition, and the second criterion includes a cell selection criterion.

44. The method in a first node for wireless communication according to any one of claims 31 to 43, characterized in that: The first criterion includes inequality constraints A5-1 and inequality constraints A5-2 in Section 5.5.4.6 of 3GPP TS 38.331, or inequality constraints A3-1 in Section 5.5.4.4 of 3GPP TS 38.331, or inequality constraints A4-1 in Section 5.5.4.5 of 3GPP TS 38.

331.

45. The method in a first node for wireless communication according to any one of claims 31 to 44, characterized in that: The first criterion includes a first distance < target distance threshold, and a second distance > a given distance threshold; the first distance includes a distance from the first node to a cell center of the first cell; the second distance includes a distance from the first node to a cell center of a PCell.

46. ​​A method in a second node for wireless communication, characterized in that: include: sending a third signaling indicating a first candidate cell group, the first candidate cell group including at least one candidate cell, each candidate cell in the first candidate cell group being associated with a candidate condition and a candidate configuration; wherein the first cell is a candidate cell in the first candidate cell group; sending a first message, the first message being used to determine a first criterion and a second criterion; receiving a first signal on the first cell; the first signal is used to establish a connection with the first cell; It is determined that the first cell meets a target criterion, and the target criterion is one of the first criterion or the second criterion; the first criterion includes only the latter of time information and location information, and the first criterion includes a measurement result of a reference signal for the first cell; the second criterion includes a measurement result of a reference signal for the first cell, and the second criterion does not include time information and location information; the time information includes universal coordinated time; the target criterion is that the first criterion or the second criterion is related to whether a recipient of the first message has a wireless connection problem.

47. The method in the second node used for wireless communication according to claim 46, characterized in that: A second message is sent, the second message indicating the target criteria.

48. The method in the second node used for wireless communication according to claim 46 or 47, characterized in that: include: Sending a first signaling, where the first signaling is used to determine a first time length; The relationship between the time interval during which the wireless connection problem occurs to the receiver of the first message and the first time length is used to determine the target criterion; Wherein, the first time length includes at least 1 millisecond.

49. The method in a second node for wireless communication according to any one of claims 46 to 48, characterized in that: include: sending a second signaling, wherein the second signaling is used to determine a first value; a relationship between the number of times the wireless connection problem occurs to the receiver of the first message and the first value is used to determine the target criterion; The first value is a non-negative integer.

50. The method in a second node for wireless communication according to any one of claims 46 to 49, characterized in that: The occurrence of the radio connection problem on the second cell is determined; the occurrence of the radio connection problem on the second cell is used to determine that the priority of the first cell is higher than the priority of the second cell; The priority of the first cell being higher than the priority of the second cell is used to determine that the second criterion does not include time information and location information; the first cell and the second cell are different.

51. The method in a second node for wireless communication according to any one of claims 46 to 50, characterized in that: Each candidate cell in the first candidate cell group corresponds to a conditional reconfiguration identifier (CondReconfigId), and the conditional reconfiguration identifier is a positive integer; the conditional reconfiguration identifier is not greater than 8.

52. The method in a second node for wireless communication according to any one of claims 46 to 51, characterized in that: include: Send the first offset; The target criterion is related to both the candidate condition corresponding to the first cell and the first offset.

53. The method in a second node for wireless communication according to any one of claims 46 to 52, characterized in that: The first message includes at least one RRC message; one RRC message in the first message is used to determine the first criterion, and another RRC message in the first message is used to determine the second criterion.

54. The method in a second node for wireless communication according to any one of claims 46 to 53, characterized in that: The first message includes SIB1, and the first message includes an RRCReconfiguration message or an RRCConnectionReconfiguration message.

55. The method in a second node for wireless communication according to any one of claims 46 to 54, characterized in that: The first message includes a field, a name of the field includes attemptCondReconfig or attemptCondReconf, and a value of the field is set to true.

56. The method in a second node for wireless communication according to any one of claims 46 to 55, characterized in that: The wireless connection problem includes any one of a synchronization reconfiguration failure or a wireless link failure.

57. The method in a second node for wireless communication according to any one of claims 46 to 56, characterized in that: If the wireless connection problem does not occur on the second cell, the sender of the first signal evaluates the first cell according to the first criterion; if the wireless connection problem occurs on the second cell, the sender of the first signal evaluates the first cell according to the second criterion; the second cell is PCell.

58. The method in a second node for wireless communication according to any one of claims 46 to 57, characterized in that: The first criterion includes a CHO execution condition, and the second criterion includes a cell selection criterion.

59. The method in a second node for wireless communication according to any one of claims 46 to 58, characterized in that: The first criterion includes inequality constraints A5-1 and inequality constraints A5-2 in Section 5.5.4.6 of 3GPP TS 38.331, or inequality constraints A3-1 in Section 5.5.4.4 of 3GPP TS 38.331, or inequality constraints A4-1 in Section 5.5.4.5 of 3GPP TS 38.

331.

60. The method in a second node for wireless communication according to any one of claims 46 to 59, characterized in that: The first criterion includes a first distance < target distance threshold, and a second distance > a given distance threshold; the first distance includes the distance from the sender of the first signal to the cell center of the first cell; the second distance includes the distance from the sender of the first signal to the cell center of the PCell.

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