Method and device used in wireless communication

Abstract

The invention discloses a method and a device used in wireless communication. A first node receives a first signaling, wherein the first signaling indicates that the first node is switched from a first cell to a second cell; switching a target radio bearer set to the second cell as a response to the reception of the first signaling; wherein the target radio bearer set is a first radio bearer set or a second radio bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained through at least the former of channel measurement and channel prediction; the first set of radio bearers is a proper subset of the second set of radio bearers. According to the invention, the cell switching can be triggered in advance, and the system robustness is improved while the QoS is ensured.

Description

Technical Field

[0001] The present application relates to a method and a device in a wireless communication system, and more particularly to a method and a device for cell switching in wireless communication. Background Art

[0002] In the future, the application scenarios of wireless communication systems will become more and more diversified, and different application scenarios will put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to study the new radio (NR) (or 5G), and the WI (Work Item) of the new radio (NR) was passed at the 3GPP RAN #75 plenary meeting, and the standardization work on NR began.

[0003] Wireless communication technology has increasingly higher requirements for mobility, transmission delay and system capacity. In NRR (Release) 18, projects based on AI (Artificial Intelligence) or ML (Machine Learning) were established. Considering the advantages of AI or ML, expanding the technical fields of AI or ML has become an important direction for 3GPP to continue to evolve in the future. Summary of the invention

[0004] The inventors have found through research that predicting an upcoming cell switching event has certain use value in ensuring QoS (Quality of Service) and system robustness, so it is necessary to study how to trigger cell switching in advance while avoiding unnecessary switching.

[0005] In response to the above problems, the present application discloses a solution that can trigger cell switching in advance based on AI / ML channel prediction, and perform the switching of radio bearers in steps to ensure QoS while improving system robustness. In the absence of conflict, the embodiments and features in the first node of the present application can be applied to the second node, and vice versa. In the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily. Further, although the original intention of the present application is for the Uu air interface, the present application can also be used for the PC5 air interface. Further, although the original intention of the present application is for the terminal and base station scenario, the present application is also applicable to relays and base stations to achieve similar technical effects in terminal and base station scenarios. In addition, the use of a unified solution for different scenarios (including but not limited to V2X scenarios and communication scenarios between terminals and base stations) also helps to reduce hardware complexity and cost. In particular, the interpretation of terms (Terminology), nouns, functions, and variables in this application (if not otherwise specified) can refer to the definitions in the 3GPP specification protocols TS36 series, TS38 series, and TS37 series.

[0006] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0007] receiving first signaling, where the first signaling instructs the first node to switch from a first cell to a second cell;

[0008] In response to receiving the first signaling, switching the target radio bearer set to the second cell;

[0009] Among them, whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first radio bearer set is a true subset of the second radio bearer set.

[0010] As an embodiment, the above method is applicable to a scenario where AI-assisted channel measurement is deployed in a communication system.

[0011] As an embodiment, the above method is applicable to mobility management, and in particular to cell switching.

[0012] As an embodiment, the characteristic of the above method is that when a first signaling indicating a cell switch is received, it is further determined whether to switch the first wireless bearer set to the target cell or the second wireless bearer set to the target cell based on the channel quality of the source cell and the channel quality of the target cell.

[0013] As an embodiment, the characteristic of the above method is that: when the channel quality of either the source cell or the target cell is obtained by including channel prediction, the first wireless bearer set is switched to the target cell; otherwise, the second wireless bearer set is switched to the target cell.

[0014] As an embodiment, after the first radio bearer set is switched to the target cell, the radio bearers in the second radio bearer set except the first radio bearer set temporarily remain in the source cell without being switched.

[0015] As an embodiment, the above method can trigger cell switching earlier through channel prediction.

[0016] As an embodiment, the above method is backward compatible, which helps to reduce hardware complexity and cost.

[0017] According to one aspect of the present application, the above method is characterized in that it includes:

[0018] receiving a second signaling;

[0019] In response to receiving the second signaling, switching the radio bearers in the second radio bearer set except the first radio bearer set to the second cell;

[0020] The target radio bearer set is the first radio bearer set.

[0021] As an embodiment, the above method is characterized in that: after switching the first radio bearer set to the target cell, a second signaling indicating cell switching is received, and the radio bearers in the second radio bearer set except the first radio bearer set are switched to the target cell.

[0022] As an embodiment, the characteristic of the above method is that the second signaling implicitly indicates the correctness of the channel prediction before receiving the first signaling, which is conducive to the training of the ML or AI model.

[0023] As an embodiment, the above method requires two cell switching commands to switch all radio bearers, which is beneficial to improving the robustness of cell switching based on channel prediction.

[0024] According to one aspect of the present application, the above method is characterized in that it includes:

[0025] Switching a third radio bearer set after a first time interval when the first signaling is received, the third radio bearer set being the first radio bearer set or the third radio bearer set being composed of radio bearers in the second radio bearer set except the first radio bearer set;

[0026] The target radio bearer set is the first radio bearer set.

[0027] According to one aspect of the present application, the above method is characterized in that when the third wireless bearer set is the first wireless bearer set, the third wireless bearer set is switched from the second cell to the first cell; when the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set, the third wireless bearer set is switched from the first cell to the second cell.

[0028] As an embodiment, the characteristic of the above method is that: after the first time interval after the first signaling is received, it is further determined whether to switch the switched first wireless bearer set from the target cell back to the source cell, or to switch the wireless bearers in the second wireless bearer set except the first wireless bearer set from the source cell to the target cell.

[0029] As an embodiment, the characteristic of the above method is that when the correctness of the channel prediction is further confirmed after the first time interval, the wireless bearers in the second wireless bearer set except the first wireless bearer set are switched from the source cell to the target cell, which is conducive to the training of the ML or AI model.

[0030] As an embodiment, the above method divides the radio bearer switching into two steps, which is beneficial to improving the robustness of the cell switching based on channel prediction.

[0031] As an embodiment, the above method is characterized in that: when it is found that the channel prediction is incorrect or inaccurate after the first time interval, the first radio bearer set is switched from the target cell back to the source cell.

[0032] As an embodiment, the above method is helpful to avoid unnecessary switching due to incorrect or inaccurate prediction.

[0033] As an embodiment, the above method is helpful to reduce reconfiguration overhead.

[0034] According to one aspect of the present application, the above method is characterized in that it includes:

[0035] Sending a first measurement report in the first cell before receiving the first signaling;

[0036] The triggering of the first measurement report is based on a prediction result, and the prediction result is that a switching condition is met, or the prediction result is that the channel quality of the second cell is better than the channel quality of the first cell by more than a first threshold; at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction.

[0037] As an embodiment, the characteristic of the above method is that the prediction result based on the channel quality can trigger the measurement report earlier.

[0038] As an embodiment, the above method is conducive to early cell switching and ensuring QoS.

[0039] According to one aspect of the present application, the above method is characterized in that it includes:

[0040] receiving a third signaling, where the third signaling configures a measurement object for the first cell and the second cell respectively;

[0041] Wherein, before a first moment, at least one channel measurement result is obtained by measuring the measurement object; and based on the at least one channel measurement result, prediction is performed to obtain at least one channel prediction result after the first moment.

[0042] As an embodiment, the characteristic of the above method is that at least one channel measurement result before the first moment is used to predict at least one channel prediction result after the first moment.

[0043] As an embodiment, the above method is characterized in that at least one channel prediction result is used to determine a cell switching event at a future time.

[0044] According to one aspect of the present application, the above method is characterized in that the first signaling includes a first field, and the first field indicates that the target radio bearer set is the first radio bearer set.

[0045] As an embodiment, the above method can reduce the equipment complexity of UE.

[0046] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0047] Sending a first signaling, where the first signaling instructs a recipient of the first signaling to switch from a first cell to a second cell;

[0048] In which, as a response to the first signaling being received, the target wireless bearer set is switched to the second cell; whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a true subset of the second wireless bearer set.

[0049] According to one aspect of the present application, the above method is characterized in that it includes:

[0050] Sending a second signaling;

[0051] In response to the second signaling being received, the radio bearers in the second radio bearer set except the first radio bearer set are switched to the second cell;

[0052] The target radio bearer set is the first radio bearer set.

[0053] As an embodiment, the serving base station of the second cell is the second node.

[0054] According to one aspect of the present application, the above method is characterized in that it includes:

[0055] The second signaling is sent;

[0056] In response to receiving the second signaling, the radio bearers in the second radio bearer set except the first radio bearer set are switched to the second cell;

[0057] The target radio bearer set is the first radio bearer set.

[0058] As an embodiment, the serving base station of the second cell is a node other than the second node.

[0059] According to one aspect of the present application, the above method is characterized in that it includes:

[0060] A third radio bearer set is switched after a first time interval in which the first signaling is received, the third radio bearer set being the first radio bearer set, or the third radio bearer set being composed of radio bearers in the second radio bearer set except the first radio bearer set;

[0061] The target radio bearer set is the first radio bearer set.

[0062] According to one aspect of the present application, the above method is characterized in that, when the third wireless bearer set is the first wireless bearer set, the third wireless bearer set is switched from the second cell to the first cell; when the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set, the third wireless bearer set is switched from the first cell to the second cell.

[0063] According to one aspect of the present application, the above method is characterized in that it includes:

[0064] receiving a first measurement report in the first cell before sending the first signaling;

[0065] The triggering of the first measurement report is based on a prediction result, and the prediction result is that a switching condition is met, or the prediction result is that the channel quality of the second cell is better than the channel quality of the first cell by more than a first threshold; at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction.

[0066] According to one aspect of the present application, the above method is characterized in that it includes:

[0067] Sending a third signaling, where the third signaling configures a measurement object for the first cell and the second cell respectively;

[0068] Wherein, before a first moment, at least one channel measurement result is obtained by measuring the measurement object; and based on the at least one channel measurement result, prediction is performed to obtain at least one channel prediction result after the first moment.

[0069] According to one aspect of the present application, the above method is characterized in that the first signaling includes a first field, and the first field indicates that the target radio bearer set is the first radio bearer set.

[0070] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0071] A first receiver receives a first signaling, where the first signaling indicates that the first node is switched from a first cell to a second cell;

[0072] The first processor switches the target radio bearer set to the second cell in response to the first signaling being received;

[0073] Among them, whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first radio bearer set is a true subset of the second radio bearer set.

[0074] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0075] A first transmitter sends a first signaling, where the first signaling instructs a receiver of the first signaling to switch from a first cell to a second cell;

[0076] In which, as a response to the first signaling being received, the target wireless bearer set is switched to the second cell; whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a true subset of the second wireless bearer set. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0078] Figure 1 An example of a transmission flow chart of a first node according to an embodiment of the present application is provided;

[0079] Figure 2 A schematic diagram illustrating a network architecture according to an embodiment of the present application is illustrated;

[0080] Figure 3 A schematic diagram illustrating a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0081] Figure 4 A hardware module schematic diagram of a communication device according to an embodiment of the present application is illustrated;

[0082] Figure 5 A signal transmission flow chart according to an embodiment of the present application is illustrated;

[0083] Figure 6 Another signal transmission flow chart according to an embodiment of the present application is illustrated;

[0084] Figure 7A flowchart illustrating the operation of a first node according to an embodiment of the present application;

[0085] Figure 8 A schematic diagram illustrating the deployment of RAN domain AI / ML functions according to an embodiment of the present application is illustrated;

[0086] Fig. 9 A schematic diagram illustrating the deployment of AI / ML functions of a UE according to an embodiment of the present application is illustrated;

[0087] Fig.10 A schematic diagram illustrating a processing system based on artificial intelligence or machine learning according to an embodiment of the present application is illustrated;

[0088] Fig.11 An example of a flowchart based on artificial intelligence or machine learning according to an embodiment of the present application is provided;

[0089] Fig.12 An example structural block diagram of a processing device in a first node according to an embodiment of the present application is shown;

[0090] Fig.13 The structural block diagram of the processing device in the second node according to an embodiment of the present application is illustrated. DETAILED DESCRIPTION

[0091] 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, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0092] Example 1

[0093] Embodiment 1 illustrates a transmission flow chart of a first node according to an embodiment of the present application, as shown in the attached Figure 1 shown.

[0094] In Example 1, the first node 100 receives a first signaling in step 101, and the first signaling instructs the first node to switch from a first cell to a second cell; in step 102, as a response to the first signaling being received, the target wireless bearer set is switched to the second cell; wherein, whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a proper subset of the second wireless bearer set.

[0095] As an embodiment, the first node receives the first signaling on the first cell.

[0096] As an embodiment, the first cell is a serving cell of the first node.

[0097] As an embodiment, the first cell is a source cell of cell switching.

[0098] As an embodiment, the first cell is a primary cell (PCell).

[0099] As an embodiment, the first cell is a special cell (Special cell, SpCell).

[0100] As an embodiment, receiving on a cell means: receiving through air interface resources of a cell.

[0101] As an embodiment, sending on a cell means: sending through the air interface resources of a cell.

[0102] As an embodiment, the air interface resources include at least one of time domain resources, frequency domain resources, space domain resources and code domain resources.

[0103] As an embodiment, the first signaling is a cell switching command.

[0104] As an embodiment, the first signaling is RRC (Radio Recourse Control, radio resource control) signaling.

[0105] As an embodiment, the first signaling is an RRC message.

[0106] As an embodiment, the first signaling is RRCReconfiguration (RRC reconfiguration).

[0107] As an embodiment, the first signaling is protocol layer signaling below the RRC sublayer.

[0108] As an embodiment, the first signaling is physical layer signaling.

[0109] As an embodiment, the first signaling is a physical layer signal.

[0110] As an embodiment, the first signaling is DCI (Downlink Control Information).

[0111] As an embodiment, the first signaling is MAC (Medium Access Control) CE (Control Element).

[0112] As an embodiment, the first signaling is LTM (L1 / L2-triggeredmobility, layer 1 / layer 2 triggered mobility) cell switching command (LTM Cell Switch Command) MAC CE.

[0113] As an embodiment, the first signaling instructs the first node to perform cell switching.

[0114] As an embodiment, the first signaling instructs the first node to switch from the first cell to the second cell.

[0115] As an embodiment, the first signaling indicates a target configuration identifier, the target configuration identifier is associated with a candidate target configuration (candidate target configuration), and the candidate target configuration is for the second cell.

[0116] As an embodiment, the first signaling indicates the second cell.

[0117] As an embodiment, the first signaling includes an identifier of the second cell.

[0118] As an embodiment, the first signaling includes a cell identifier, and the cell identifier is used to identify the second cell.

[0119] As an embodiment, the cell identity is a physical cell identity.

[0120] As an embodiment, the one cell identifier is a serving cell index.

[0121] As an embodiment, the second cell is a candidate cell for cell switching.

[0122] As an embodiment, the second cell is a target cell of cell switching.

[0123] As an embodiment, the second cell is a main cell.

[0124] As an embodiment, the second cell is a special cell.

[0125] As an embodiment, the first signaling includes information required to access the second cell.

[0126] As an embodiment, the first signaling is received via one of SRB1 and SRB3.

[0127] As an embodiment, the first node initiates a random access procedure for the second cell.

[0128] As an embodiment, the random access procedure includes sending a random access preamble in the second cell.

[0129] As an embodiment, the initiating random access process includes sending a random access preamble.

[0130] As an embodiment, the random access process is CFRA (Contention Free Random Access, contention-free random access).

[0131] As an embodiment, the random access process is CBRA (Contention based Random Access, contention-based random access process).

[0132] As an embodiment, the random access preamble is indicated by the third signaling.

[0133] As a sub-embodiment of the above embodiment, the random access process is a 4-step random access process or a 2-step random access process.

[0134] As an embodiment, the random access preamble is indicated by the first signaling.

[0135] As a sub-embodiment of the above embodiment, the random access process is a 4-step random access process.

[0136] As an embodiment, the event that triggers the random access process is cell switching.

[0137] As an embodiment, the event triggering the random access process is a prediction of cell switching.

[0138] As an embodiment, the first node receives a random access response, and the random access response indicates a TA (time advance) for the second cell.

[0139] As an embodiment, the first signaling explicitly indicates the TA.

[0140] As an embodiment, the first signaling does not indicate the TA for the second cell.

[0141] As an embodiment, the first node obtains the TA through UE-based TA measurement (UE-basedTAmeasurement).

[0142] As an embodiment, in response to receiving the first signaling, the first node is switched from the first cell to the second cell; switching from the first cell to the second cell includes switching the target radio bearer set to the second cell.

[0143] As an embodiment, in response to the first signaling being received, at least the target radio bearer set is switched from the first cell to the second cell.

[0144] As an embodiment, the target radio bearer set is one of the first radio bearer set and the second radio bearer set.

[0145] As an embodiment, the first radio bearer set includes at least one SRB (Signalling Radio Bearer).

[0146] As an embodiment, the SRB includes a split SRB.

[0147] As an embodiment, the first radio bearer set includes at least part of the SRBs configured by the first node.

[0148] As an embodiment, the first radio bearer set includes all SRBs configured by the first node.

[0149] As an embodiment, the first radio bearer set includes at least part of {SRB0, SRB1, SRB2, SRB3, SRB4, SRB5}.

[0150] As an embodiment, the first radio bearer set does not include DRB (Data Radio Bearer).

[0151] As an embodiment, the first radio bearer set does not include MRB (MBS (Multicast / Broadcast Services) Radio Bearer, MBS radio bearer)

[0152] As an embodiment, the first radio bearer set is a proper subset of the second radio bearer set including: the second radio bearer set includes all the radio bearers in the first radio bearer set.

[0153] As an embodiment, the first radio bearer set is a proper subset of the second radio bearer set including: at least one radio bearer in the second radio bearer set does not belong to the first radio bearer set.

[0154] As an embodiment, the second radio bearer set includes at least one DRB.

[0155] As an embodiment, the DRB includes a split DRB.

[0156] As an embodiment, the second radio bearer set includes at least part of the DRBs configured by the first node.

[0157] As an embodiment, the second radio bearer set includes all DRBs configured by the first node.

[0158] As an embodiment, the second radio bearer set includes at least one MRB.

[0159] As an embodiment, the second radio bearer set includes at least part of the MRBs configured by the first node.

[0160] As an embodiment, the second radio bearer set includes all MRBs configured by the first node.

[0161] As an embodiment, the second radio bearer set includes at least one SRB that is not in the first radio bearer set.

[0162] As an embodiment, the second radio bearer set includes all radio bearers configured by the first node.

[0163] As an embodiment, it is determined that the target radio bearer set is switched to the second cell according to the channel quality of the first cell and the channel quality of the second cell.

[0164] As an embodiment, the first signaling indicates a first set of conditions; when any condition in the first set of conditions is met, the first node is switched from the first cell to the second cell.

[0165] As an embodiment, when any condition in the first condition set is met, at least the target radio bearer set is switched from the first cell to the second cell.

[0166] As an embodiment, the first condition set includes at least one condition.

[0167] As an embodiment, the first condition set includes a first condition.

[0168] As an embodiment, the first condition is that the channel quality of the second cell is better than the channel quality of the first cell by more than the first threshold; wherein at least one of the channel quality of the first cell and the channel quality of the second cell is obtained simultaneously through channel measurement and channel prediction.

[0169] As a sub-embodiment of the above embodiment, a result of subtracting the channel quality of the first cell from the channel quality of the second cell is greater than the first threshold.

[0170] As a sub-embodiment of the above embodiment, the sum of the channel quality of the second cell plus a first offset minus the sum of the channel quality of the first cell plus a second offset is greater than the first threshold; wherein the first offset and the second offset are respectively configured by the network.

[0171] As a sub-embodiment of the above embodiment, Mn1+Ofn+Ocn–Hys1>Mp1+Ofp+Ocp+Off1; wherein, Mn1 is the channel quality of the second cell excluding offset, Ofn is a specific offset configured for the measurement object of the reference signal of the second cell, Ocn is a specific offset configured for the second cell, Hys1 is a hysteresis parameter for the first condition, Mp1 is the channel quality of the first cell excluding offset, the parameter Ofp is a specific offset configured for the measurement object of the first cell, the parameter Ocp is a specific offset configured for the first cell, and Off1 is an offset parameter configured for the first condition.

[0172] As an embodiment, the Hys1 is the first threshold.

[0173] As an embodiment, the first threshold is configured by the network.

[0174] As an embodiment, the first threshold is pre-configured.

[0175] As an embodiment, the first threshold is greater than 0.

[0176] As an embodiment, one of the conditions included in the first condition set is that the channel quality of the second cell is better than a third threshold, and the channel quality of the first cell is worse than a fourth threshold; wherein at least one of the channel quality of the first cell and the channel quality of the second cell is obtained simultaneously through channel measurement and channel prediction.

[0177] As a sub - embodiment of the above - mentioned embodiment, the channel quality of the second cell is greater than the second threshold, and the channel quality of the first cell is less than the third threshold.

[0178] As a sub - embodiment of the above - mentioned embodiment, the sum of the channel quality of the second cell and a third offset is greater than the second threshold, and the sum of the channel quality of the first cell and a fourth offset is less than the third threshold; wherein, the third offset and the fourth offset are respectively configured by the network.

[0179] As a sub - embodiment of the above - mentioned embodiment, Mp1 + Hys1 < Thresh1, and Mn1+Ofn + Ocn–Hys1 > Thresh2; wherein, Mp1 is the channel quality of the first cell without offset, Thresh1 is the third threshold, Hys1 is the hysteresis parameter for this condition, Mn1 is the channel quality of the second cell without offset, Ofn is the specific offset configured for the measurement object of the second cell, Ocn is the specific offset configured for the second cell, and Thresh2 is the second threshold.

[0180] As an embodiment, the second threshold and the third threshold are respectively configured by the network.

[0181] As an embodiment, the second threshold and the third threshold are respectively pre - configured.

[0182] As an embodiment, one of the conditions included in the first condition set is that the condition for switching from the first cell to the second cell is satisfied according to the channel quality of the first cell and the channel quality of the second cell; wherein, at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction simultaneously.

[0183] As an embodiment, the condition for the first cell to switch to the second cell is configured by the network.

[0184] As an embodiment, the first threshold, the second threshold, and the third threshold are indicated by the first signaling.

[0185] As an embodiment, the first threshold, the second threshold, and the third threshold are indicated by RRC signaling other than the first signaling.

[0186] As an embodiment, the conditions in the first condition set are used for triggering CHO (Conditional Handover).

[0187] As an embodiment, the conditions in the first condition set are triggered by a conditional LTM.

[0188] As an embodiment, whether the target radio bearer set is the first radio bearer set or the second radio bearer set is determined according to the channel quality of the first cell and the channel quality of the second cell.

[0189] As an embodiment, whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on the first signaling; and the first signaling depends on the channel quality of the first cell and the channel quality of the second cell.

[0190] As an embodiment, the first signaling depends on the channel quality of the first cell and the channel quality of the second cell, including: at least one of the method for obtaining the channel quality of the first cell and the method for obtaining the channel quality of the second cell is used to determine the category of the first signaling.

[0191] As an embodiment, the category of the first signaling includes a first type of cell switching command and a second type of cell switching command.

[0192] As an embodiment, the first type of cell switching command indicates that the target radio bearer set is the first radio bearer set.

[0193] As an embodiment, the second type of cell switching command indicates that the target radio bearer set is the second radio bearer set.

[0194] As an embodiment, the first signaling includes a first field, and the first field is used to indicate a category of the first signaling.

[0195] As an embodiment, the first field is used to determine whether the target radio bearer set is the first radio bearer set or the second radio bearer set.

[0196] As a sub-embodiment of the above embodiment, the first domain indicates that the first signaling is the first type of cell switching command, and the target radio bearer set is the first radio bearer set.

[0197] As a sub-embodiment of the above embodiment, the first domain indicates that the first signaling is the second type of cell switching command, and the target radio bearer set is the second radio bearer set.

[0198] As an embodiment, whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on at least one of a method for obtaining the channel quality of the first cell and a method for obtaining the channel quality of the second cell.

[0199] As an embodiment, the channel quality of the first cell is obtained by at least the former of channel measurement and channel prediction.

[0200] As an embodiment, the channel quality of the second cell is obtained by at least the former of channel measurement and channel prediction.

[0201] As an embodiment, when at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction at the same time, the first signaling is the first type of cell switching command.

[0202] As an embodiment, when at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel prediction, the first signaling is the first type of cell switching command.

[0203] As an embodiment, when at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction at the same time, the first signaling is the first type of cell switching command or the second type of cell switching command.

[0204] As an embodiment, when at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel prediction, the first signaling is the first type of cell switching command or the second type of cell switching command.

[0205] As a sub-embodiment of the above two embodiments, whether the first signaling is the first type of cell switching command or the second type of cell switching command is related to base station implementation.

[0206] As an embodiment, when the channel quality of the first cell and the channel quality of the second cell are both obtained through channel measurement, the first signaling is the second type cell switching command.

[0207] As an embodiment, whether the first signaling is the first type of cell switching command or the second type of cell switching command is determined by the first node according to a method for obtaining the channel quality of the first cell and a method for obtaining the channel quality of the second cell.

[0208] As an embodiment, the channel measurement includes measuring the channel quality of one cell.

[0209] As an embodiment, the channel prediction includes inferring a prediction of the channel quality of a cell based on the result of the channel measurement.

[0210] As an embodiment, a first measurement report is sent in the first cell before receiving the first signaling; wherein the triggering of the first measurement report is based on a prediction result.

[0211] As an embodiment, the first measurement report is a layer 1 measurement report.

[0212] As an embodiment, the first measurement report is a layer 3 measurement report.

[0213] As an embodiment, the first measurement report is a MeasurementReport message.

[0214] As an embodiment, the first measurement report is sent via one of SRB1 and SRB3.

[0215] As an embodiment, the predicted result of triggering the first measurement report is satisfying a switching condition.

[0216] As an embodiment, the prediction result that triggers the first measurement report satisfies any one of the conditions in the first set of conditions; wherein at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction.

[0217] As an embodiment, the conditions in the first condition set are used to trigger the sending of the first measurement report.

[0218] As an embodiment, the triggering of the first measurement report is based on prediction, including prediction of an A3 event.

[0219] As an embodiment, the triggering of the first measurement report is based on prediction, including prediction of an A5 event.

[0220] As an embodiment, the triggering of the first measurement report is based on prediction, including prediction of an imminent handover from the first cell to the second cell.

[0221] As an embodiment, the triggering of the first measurement report is based on prediction, including predicting that the future cell channel quality satisfies any one of the first condition set based on the channel measurement in the first cell and the channel prediction in the second cell.

[0222] As an embodiment, the triggering of the first measurement report is based on prediction, including predicting that the future cell channel quality satisfies any one of the first condition set based on the channel prediction in the first cell and the channel measurement in the second cell.

[0223] As an embodiment, the triggering of the first measurement report is based on prediction, including predicting that the future cell channel quality satisfies any one of the first condition set based on the channel prediction in the first cell and the channel prediction in the second cell.

[0224] As an embodiment, the first measurement report includes a channel measurement result of the first cell and a channel prediction result of the second cell.

[0225] As an embodiment, the first measurement report includes a channel prediction result of the first cell and a channel measurement result of the second cell.

[0226] As an embodiment, the first measurement report includes the channel prediction result of the first cell and the channel prediction result of the second cell.

[0227] As an embodiment, the first measurement report is used to trigger the sending of the first signaling.

[0228] As an embodiment, the first node receives third signaling in the first cell.

[0229] As an embodiment, the first signaling is high-layer signaling.

[0230] As an embodiment, the first signaling is RRC signaling.

[0231] As an embodiment, the first signaling is RRCReconfiguration.

[0232] As an embodiment, the first signaling is at least one IE (Information element) included in the RRC signaling.

[0233] As an embodiment, the first signaling includes MeasConfig (measurement configuration) IE.

[0234] As an embodiment, the first signaling includes MeasObjectToAddModList (measurement object add modification list).

[0235] As an embodiment, the first signaling includes MeasIdToAddModList (measurement identifier add modification list).

[0236] As an embodiment, the third signaling includes at least one candidate configuration (candidate configuration(s)).

[0237] As an embodiment, each candidate configuration in the at least one candidate configuration is for a handover candidate cell.

[0238] As an embodiment, the third signaling includes LTM-config IE (information element).

[0239] As an embodiment, the third signaling includes CondReconfigToAddModList (conditional reconfiguration list to be added or modified) IE.

[0240] As an embodiment, the third signaling includes ConditionalReconfiguration IE.

[0241] As an embodiment, the candidate configuration is an LTM-candidate.

[0242] As an embodiment, the candidate configuration is condRRCReconfig (conditional RRC reconfiguration).

[0243] As an embodiment, the candidate configuration is applied to LTM cell switching.

[0244] As an embodiment, the candidate configuration is applied to CHO cell switching.

[0245] As an embodiment, the candidate configuration includes a configuration of a switching candidate cell.

[0246] As an embodiment, one of the at least one candidate configuration included in the third signaling is for the second cell.

[0247] As an embodiment, the second cell is a switching candidate cell.

[0248] As an embodiment, the third signaling indicates the second cell.

[0249] As an embodiment, the third signaling includes the cell identifier of the second cell.

[0250] As an embodiment, the third signaling configures the second cell.

[0251] As an embodiment, the third signaling configures the air interface resources of the second cell.

[0252] As an embodiment, the third signaling configures a C-RNTI (Cell-Radio Network Temporary Identifier) ​​of the first node in the second cell.

[0253] As an embodiment, the third signaling configures air interface resources for performing a random access process on the second cell.

[0254] As an embodiment, the third signaling configures measurement objects for the first cell and the second cell respectively.

[0255] As an embodiment, the parameters for configuring the measurement object include information of SS (Synchronization Signals) / PBCH (Physical Broadcast Channel) block intra-frequency / inter-frequency measurement.

[0256] As an embodiment, the parameters for configuring the measurement object include information of CSI-RS intra-frequency / inter-frequency measurement.

[0257] As an embodiment, the parameters for configuring the measurement object include measurement frequency information.

[0258] As an embodiment, the parameters for configuring the measurement object include measurement time information.

[0259] As an embodiment, the parameters for configuring the measurement object include a measurement period.

[0260] As an embodiment, the third signaling includes MeasConfig (measurement configuration) IE.

[0261] As an embodiment, the measurement object includes the frequency / time position and subcarrier spacing of the reference signal to be measured for the first cell and the second cell.

[0262] As an embodiment, the reference signal is one of SSB (SS / PBCH (Synchronization signal / Physical broadcast channel) block(s), synchronization signal / physical broadcast channel block), or CSI-RS (channel state information-reference signal, channel state information reference signal).

[0263] As an embodiment, the third signaling indicates measurement reporting configurations for the first cell and the second cell respectively.

[0264] As an embodiment, the third signaling includes a reportConfigNR (report configuration new radio) IE indicating the first measurement report.

[0265] As an embodiment, the first signaling includes ReportConfigNR (report configuration new air interface) IE.

[0266] As an embodiment, the first signaling includes ReportConfigToAddModList (report configuration to add modification list).

[0267] As an embodiment, the parameters for configuring the measurement reporting include criteria for triggering a measurement reporting event.

[0268] As an embodiment, a measurement report of a cell is associated with a measurement object of the cell.

[0269] As a sub-embodiment of the above embodiment, the measurement report of one cell includes a result obtained by performing channel measurement on a measurement object of the one cell.

[0270] As a sub-embodiment of the above embodiment, the measurement report of one cell includes a result obtained by performing channel prediction on a measurement object of the one cell.

[0271] As an embodiment, the third signaling indicates the first set of conditions.

[0272] As an embodiment, the third signaling includes a CondTriggerConfig (condition trigger configuration) field to indicate the first condition set.

[0273] As an embodiment, the third signaling includes an EventTriggerConfig (event trigger configuration) field to indicate the first condition set.

[0274] As an embodiment, the third signaling configures measurement identities for the first cell and the second cell respectively.

[0275] As an embodiment, the third signaling configures measurement filtering configurations for the first cell and the second cell respectively.

[0276] As an embodiment, the third signaling configures measurement gaps for the first cell and the second cell respectively.

[0277] As an embodiment, at least one channel measurement result is obtained by measuring the measurement object before a first moment; and at least one channel prediction result after the first moment is obtained by performing prediction based on the at least one channel measurement result.

[0278] As an embodiment, the first moment is a moment after receiving the third signaling and before triggering the sending of the first measurement report.

[0279] As an embodiment, at least one of the at least one channel prediction results predicted by the first node at the first moment satisfies the channel switching condition, or satisfies any condition in the first condition set.

[0280] As an embodiment, the at least one channel measurement result includes a channel measurement result for the first cell and at least one of the first cells.

[0281] As an embodiment, the channel measurement result is RSRP (Reference Signal Received Power).

[0282] As an embodiment, the channel measurement result is RSRQ (Reference Signal Received Quality).

[0283] As an embodiment, the channel measurement result is SINR (Signal to Interference plus Noise Ratio).

[0284] As an embodiment, the channel measurement results are not filtered.

[0285] As an embodiment, the channel measurement results are filtered through layer 1.

[0286] As an embodiment, the channel measurement results are subjected to layer 3 filtering.

[0287] As an embodiment, the channel measurement result is a layer 1 measurement result, or a layer 3 measurement result.

[0288] As an embodiment, the at least one channel prediction result refers to a prediction result of the channel prediction for the first cell.

[0289] As an embodiment, the at least one channel prediction result refers to a prediction result of the channel prediction for the second cell.

[0290] As an embodiment, the at least one channel prediction result is obtained by deducing the at least one channel measurement result in at least one of the time domain, frequency domain and spatial domain.

[0291] As an embodiment, the at least one channel prediction result is obtained by deducing the at least one channel measurement result in at least one of the time domain, frequency domain and spatial domain, including: the at least one channel prediction result is obtained by interpolation calculation of the at least one channel measurement result in at least one of the time domain, frequency domain and spatial domain.

[0292] As an embodiment, the at least one channel prediction result is obtained by deducing the at least one channel measurement result in at least one of the time domain, frequency domain and spatial domain, including: the at least one channel prediction result is obtained by extrapolating the at least one channel measurement result in at least one of the time domain, frequency domain and spatial domain.

[0293] Specifically, taking time domain prediction as an example, the at least one channel measurement result includes the channel measurement results at time {t1, t2, t3}, and the at least one channel prediction result is obtained by deducing the channel measurement results at time {t1, t2, t3}, and the at least one channel prediction result includes the channel prediction result at time {t4, t5}; wherein the time {t4, t5} are both located after the time {t1, t2, t3} in the time domain.

[0294] As an embodiment, the at least one channel prediction result includes the at least one channel prediction result on the second frequency domain resource set derived by the at least one channel measurement result on the first frequency domain resource set; wherein the frequency domain resources included in the first frequency domain resource set and the frequency domain resources included in the second frequency domain resource set are at least partially different.

[0295] As an embodiment, the at least one channel prediction result includes the at least one channel prediction result in the second beam set derived from the at least one channel measurement result in the first beam set; wherein, the first beam set and the second beam set are orthogonal, and the first beam set and the second beam set respectively include at least one beam.

[0296] As an embodiment, the at least one channel prediction result is obtained by deducing the at least one channel measurement result, including: the at least one channel prediction result is obtained through ML, the input of the ML is the at least one channel measurement result, and the output of the ML is the at least one channel prediction result.

[0297] As an embodiment, the ML includes AI.

[0298] Example 2

[0299] 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 shown. Figure 2A diagram illustrating a network architecture 200 for NR 5G, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems. The NR 5G, LTE or 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 may include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220 and Internet Services 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, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit switching services or other cellular networks. NG-RAN includes NR Node B (gNB, new radio Node B) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination towards UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., a backhaul link). The XnAP protocol of the Xn interface is used to transmit control plane messages of the wireless network, and the user plane protocol of the Xn interface is used to transmit user plane data. gNB203 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 (Transmission Reception Point) or some other suitable term. In a NTN (NonTerrestrialNetwork, non-terrestrial / satellite network) network, gNB203 may be a satellite, an aircraft or a ground base station relayed by a satellite. gNB203 provides an access point to 5GC / EPC210 for UE201.Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, 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, vehicle-mounted devices, vehicle-mounted communication units, 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. gNB203 is connected to 5GC / EPC210 via 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 the control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) 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 PS (Packet Switching) streaming services.

[0300] As an embodiment, the UE201 corresponds to the first node in this application.

[0301] As an embodiment, the gNB203 corresponds to the second node in this application.

[0302] As an embodiment, the UE201 is a user equipment.

[0303] As an embodiment, the gNB203 is a macro cell base station.

[0304] As an embodiment, the gNB203 is a micro cell base station.

[0305] As an embodiment, the gNB203 is a pico cell base station.

[0306] As an embodiment, the gNB203 is a home base station (Femtocell).

[0307] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0308] As an embodiment, the gNB203 is a flying platform device.

[0309] As an embodiment, the gNB203 is a satellite device.

[0310] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0311] As an embodiment, the gNB203 is a testing device (e.g., a transceiver that simulates some functions of a base station, a signaling tester).

[0312] As an embodiment, the wireless link from the UE201 to the gNB203 is an uplink, and the uplink is used to perform uplink transmission.

[0313] As an embodiment, the wireless link from the UE241 to the gNB203 is an uplink, and the uplink is used to perform uplink transmission.

[0314] As an embodiment, the wireless link from the gNB203 to the UE201 is a downlink, and the downlink is used to perform downlink transmission.

[0315] As an embodiment, the wireless link from the gNB203 to the UE241 is a downlink, and the downlink is used to perform downlink transmission.

[0316] As an embodiment, the UE201 and the gNB203 are connected via a Uu air interface.

[0317] As an embodiment, the UE241 and the gNB203 are connected via a Uu air interface.

[0318] As an embodiment, the UE201 and the UE241 are connected via a PC5 air interface.

[0319] Example 3

[0320] Embodiment 3 illustrates a schematic diagram of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in the attached figure. 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 3The radio protocol architecture of the control plane 300 of the UE and gNB 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 in this article. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the UE and the gNB through PHY 301. The L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. The PDCP sublayer 304 provides data encryption and integrity protection. The PDCP sublayer 304 also provides support for inter-zone mobility of UEs between gNBs. The RLC sublayer 303 provides segmentation and reassembly of data packets, and retransmits lost data packets through ARQ (Automatic Repeat Request). The RLC sublayer 303 also provides duplicate data packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical channels and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between UEs. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) 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 configuring the lower layers using RRC signaling between the gNB and the UE. The wireless protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The wireless protocol architecture in the user plane 350 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 wireless transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers to support the diversity of services.The wireless protocol architecture of the UE in the user plane 350 may include, at the L2 layer, a SDAP sublayer 356, a PDCP sublayer 354, a portion of or all of the protocol sublayers of the RLC sublayer 353 and the MAC sublayer 352. Although not shown, the UE may also have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0321] As an embodiment, the PDCP 304 sends data to the RLC 303 or receives data from the RLC 303 through an RLC channel.

[0322] As an embodiment, the PDCP354 sends data to the RLC353 or receives data from the RLC353 through the RLC channel.

[0323] As an embodiment, the RLC 303 sends data to the MAC 302 or receives data from the MAC 302 through a logical channel.

[0324] As an embodiment, the RLC353 sends data to the MAC352 or receives data from the MAC352 through a logical channel.

[0325] As an embodiment, the MAC 302 sends data to the PHY 301 or receives data from the PHY 301 through a transmission channel.

[0326] As an embodiment, the MAC 352 sends data to the PHY 351 or receives data from the PHY 351 through a transmission channel.

[0327] As an embodiment, the first receiver includes an inter-layer reception primitive.

[0328] As an embodiment, the first receiver includes a set of instructions for completing a receiving function.

[0329] As an example, Figure 3 The entities of multiple sublayers of the control plane form SRB in the vertical direction.

[0330] As an example, Figure 3 The entities of multiple sublayers of the user plane in the vertical direction form a DRB.

[0331] As an example, Figure 3 The entities of multiple sublayers of the user plane in the vertical direction form an MRB.

[0332] As an example, Figure 3The wireless protocol architecture in is applicable to the first node in this application.

[0333] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0334] As an embodiment, the first signaling in the present application is generated in the RRC306.

[0335] As an embodiment, the first signaling in the present application is generated by the MAC302.

[0336] As an embodiment, the first signaling in the present application is generated in the PHY301.

[0337] As an embodiment, the second signaling in the present application is generated in the RRC306.

[0338] As an embodiment, the second signaling in the present application is generated by the MAC302.

[0339] As an embodiment, the second signaling in the present application is generated in the PHY301.

[0340] As an embodiment, the third signaling in the present application is generated in the RRC306.

[0341] As an embodiment, the first measurement report in the present application is generated in the RRC306.

[0342] As an embodiment, the L2 layer 305 or 355 belongs to a higher layer.

[0343] As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

[0344] Example 4

[0345] Embodiment 4 illustrates a hardware module schematic diagram of a communication device according to an embodiment of the present application, as shown in the attached 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.

[0346] 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.

[0347] The second communication device 410 includes a controller / processor 475, a memory 476, a data source 477, 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.

[0348] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, the upper layer data packets from the core network or the upper layer data packets from the data source 477 are provided to the controller / processor 475. The core network and the data source 477 represent all the protocol layers above the L2 layer. The controller / processor 475 implements the functionality of the L2 layer. In the 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 the 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 FEC (forward error correction) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., BPSK (binary phase shift keying), QPSK (quadrature phase shift keying), M-PSK (M phase shift keying), M-QAM (M quadrature amplitude modulation)). 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 IFFT (inverse fast Fourier transform) 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.

[0349] 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 FFT (Fast Fourier Transform) 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 with the first communication device 450 as the destination. 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 first communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover higher layer data packets from the second communication device 410. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0350] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, the upper layer data packets are provided to the controller / processor 459 using the data source 467. The data source 467 represents all the 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, 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.

[0351] In the transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the reception functions 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 that stores 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 first communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network or all protocol layers above the L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.

[0352] As an embodiment, the first communication device 450 apparatus 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 apparatus at least: receives a first signaling, the first signaling instructing the first node to switch from a first cell to a second cell; as a response to the first signaling being received, switches a target wireless bearer set to the second cell; wherein, whether the target wireless bearer set is a first wireless bearer set or a second wireless bearer set depends on a channel quality of the first cell and a channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a proper subset of the second wireless bearer set.

[0353] As an embodiment, the first communication device 450 apparatus includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: receiving a first signaling, wherein the first signaling indicates that the first node switches from a first cell to a second cell; as a response to the first signaling being received, switching a target wireless bearer set to the second cell; wherein whether the target wireless bearer set is a first wireless bearer set or a second wireless bearer set depends on a channel quality of the first cell and a channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; and the first wireless bearer set is a proper subset of the second wireless bearer set.

[0354] As an embodiment, the second communication device 410 device includes: at least one processor and at least one memory, the at least one memory includes 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 device at least: sends a first signaling, the first signaling indicates that the recipient of the first signaling is switched from the first cell to the second cell; wherein, as a response to the first signaling being received, the target radio bearer set is switched to the second cell; whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first radio bearer set is a true subset of the second radio bearer set.

[0355] As an embodiment, the second communication device 410 device includes: at least one processor and at least one memory, the at least one memory includes 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 device at least: sends a first signaling, the first signaling indicates that the recipient of the first signaling is switched from the first cell to the second cell; wherein, as a response to the first signaling being received, the target radio bearer set is switched to the second cell; whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first radio bearer set is a true subset of the second radio bearer set.

[0356] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0357] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0358] As an embodiment, the second communication device 410 corresponds to the serving base station of the second cell in this application.

[0359] As an embodiment, the first communication device 450 is a UE.

[0360] As an embodiment, the first communication device 450 is a layer 3 relay node.

[0361] As an embodiment, the first communication device 450 is a RSU (Road Side Unit).

[0362] As an embodiment, the second communication device 410 is a base station.

[0363] As an embodiment, the second communication device 410 is a distribution unit of a base station.

[0364] As an embodiment, the second communication device 410 is a piece of code in a distributed unit of a base station.

[0365] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456 or the controller / processor 459 is used to receive the first signaling in the present application.

[0366] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to transmit the first signaling in the present application.

[0367] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456 or the controller / processor 459 is used to receive the second signaling in the present application.

[0368] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to transmit the second signaling in the present application.

[0369] As an embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468 or the controller / processor 459 is used to send the first measurement report in the present application.

[0370] As an embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470 or the controller / processor 475 is used to receive the first measurement report in the present application.

[0371] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456 or the controller / processor 459 is used to receive the third signaling in the present application.

[0372] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to transmit the third signaling in the present application.

[0373] Example 5

[0374] Embodiment 5 illustrates a signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 In the embodiment, the first node N51 and the second node N52 communicate via a wireless interface, and the first node N51 and the third node N53 communicate via a wireless interface. Embodiment 5 is applicable to the case where the serving base station of the second cell is a node other than the second node.

[0375] for First node N51, receiving a first signaling in step S511; switching the target radio bearer set to a second cell in step S512; receiving a second signaling in step S513; switching the radio bearers in the second radio bearer set except the first radio bearer set to the second cell in step S514.

[0376] for Second node N52 , sending the first signaling in step S521.

[0377] for The third node N53 , sending the second signaling in step S531.

[0378] In Example 5, the first node receives a first signaling, and the first signaling instructs the first node to switch from a first cell to a second cell; in response to the first signaling being received, the target wireless bearer set is switched to the second cell; wherein, whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a proper subset of the second wireless bearer set.

[0379] In embodiment 5, the first node receives a second signaling; in response to the second signaling being received, the radio bearers in the second radio bearer set except the target radio bearer set are switched to the second cell; wherein the target radio bearer set is the first radio bearer set.

[0380] As an embodiment, the first node N51 and the second node N52 are transmitted through at least the first cell.

[0381] As an embodiment, the first node N51 and the third node N53 are transmitted through at least the second cell.

[0382] As an embodiment, the first node N51 is a UE.

[0383] As an embodiment, the second node N52 is a serving base station of the first node N51 before performing cell switching.

[0384] As an embodiment, the third node N53 is a serving base station of the first node N51 after performing cell switching.

[0385] As an embodiment, the second node sends the first signaling on the first cell. In Embodiment 5, the first signaling is the first type of cell switching command.

[0386] As an embodiment, the first radio bearer set is switched from the first cell to the second cell.

[0387] As an embodiment, before step S513, the radio bearers in the second radio bearer set except the first radio bearer set are located in the first cell.

[0388] As an embodiment, the first node receives the second signaling on the second cell.

[0389] As an embodiment, the third node sends the second signaling on the second cell.

[0390] As an embodiment, the second node and the third node are the same node.

[0391] As an embodiment, the first cell and the second cell belong to the same gNB-DU (Distributed Unit).

[0392] As a sub-embodiment of the above embodiment, the second node and the third node are co-located.

[0393] As a sub-embodiment of the above embodiment, the second node and the third node are the same Transmit / Receive Point (TRP).

[0394] As a sub-embodiment of the above embodiment, the second node and the third node belong to the same base station.

[0395] As an embodiment, the second node and the third node are different nodes.

[0396] As an embodiment, the first cell and the second cell belong to different gNB-DUs.

[0397] As a sub-embodiment of the above embodiment, the different gNB-DUs belong to the same gNB-CU (Central Unit).

[0398] As a sub-embodiment of the above embodiment, the different gNB-DUs belong to different gNB-CUs.

[0399] As a sub-embodiment of the above embodiment, the second node and the third node are not co-located.

[0400] As a sub-embodiment of the above embodiment, the second node and the third node belong to different transceiver points.

[0401] As a sub-embodiment of the above embodiment, the second node and the third node belong to different base stations.

[0402] As an embodiment, the second signaling is a cell switching command.

[0403] As an embodiment, the second signaling is RRC signaling.

[0404] As an embodiment, the second signaling is an RRC message.

[0405] As an embodiment, the second signaling is RRCReconfiguration.

[0406] As an embodiment, the second signaling is protocol layer signaling below the RRC sublayer.

[0407] As an embodiment, the second signaling is physical layer signaling.

[0408] As an embodiment, the second signaling is a physical layer signal.

[0409] As an embodiment, the second signaling is DCI.

[0410] As an embodiment, the second signaling is MAC CE.

[0411] As an embodiment, the second signaling is LTM Cell Switch CommandMAC CE.

[0412] As an embodiment, the second signaling instructs the first node to perform cell switching.

[0413] As an embodiment, the second signaling depends on the first signaling.

[0414] As an embodiment, the second signaling depends on the first signaling, including: the second signaling is sent on the premise that the first signaling is sent, and the first signaling is the first type of cell switching command.

[0415] As an embodiment, the second signaling is dependent on the first signaling, including: when the first signaling is the second type of cell switching command, the second signaling is not sent.

[0416] As an embodiment, the second signaling being dependent on the first signaling includes: the second signaling is received after the first signaling.

[0417] As an embodiment, the time interval between the reception time of the second signaling and the reception time of the first signaling is not greater than a reference time interval, and the reference time interval is configurable, or the reference time interval is preconfigured.

[0418] As a sub-embodiment of the above embodiment, the reference time interval is the first time interval.

[0419] As an embodiment, the reference time interval is indicated by the first signaling.

[0420] As an embodiment, the reference time interval is indicated by the third signaling.

[0421] As an embodiment, the sending of the second signaling is decided by the network.

[0422] As an embodiment, the sending of the second signaling depends on the implementation of the first node.

[0423] As an embodiment, the sending of the second signaling is actively triggered by the first node.

[0424] As an embodiment, the first node sends a second measurement report in the second cell; wherein the triggering of the second measurement report is based on a prediction result.

[0425] As an embodiment, the second measurement report is a layer 1 measurement report.

[0426] As an embodiment, the second measurement report is a layer 3 measurement report.

[0427] As an embodiment, the second measurement report is a MeasurementReport message.

[0428] As an embodiment, the second measurement report is sent via one of SRB1 and SRB3.

[0429] As an embodiment, the third signaling indicates a reporting configuration of the second measurement report.

[0430] As an embodiment, the third signaling includes a reportConfigNR (report configuration new radio) IE indicating the second measurement report.

[0431] As an embodiment, the third signaling indicates a condition in the first condition set.

[0432] As an embodiment, the prediction result of triggering the second measurement report satisfies any one of the conditions in the first set of conditions; wherein at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction.

[0433] As an embodiment, the triggering of the second measurement report is based on prediction, including prediction of an A3 event.

[0434] As an embodiment, the triggering of the second measurement report is based on prediction, including prediction of an A5 event.

[0435] As an embodiment, the triggering of the second measurement report is based on prediction, including prediction of an imminent handover from the first cell to the second cell.

[0436] As an embodiment, the triggering of the second measurement report is based on prediction, including predicting that the future cell channel quality satisfies any one of the first condition set based on the channel measurement in the first cell and the channel prediction in the second cell.

[0437] As an embodiment, the triggering of the second measurement report is based on prediction, including predicting that the future cell channel quality satisfies any one of the first condition set based on the channel prediction in the first cell and the channel measurement in the second cell.

[0438] As an embodiment, the triggering of the second measurement report is based on prediction, including predicting that the future cell channel quality satisfies any one of the first condition set based on the channel prediction in the first cell and the channel prediction in the second cell.

[0439] As an embodiment, the second measurement report includes the channel prediction result of the first cell and the channel measurement result of the second cell.

[0440] As an embodiment, the second measurement report includes the channel prediction result of the first cell and the channel prediction result of the second cell.

[0441] As an embodiment, before the second moment, at least one new channel measurement result is obtained by measuring the measurement object; and at least one new channel prediction result after the second moment is obtained by making a prediction based on the at least one new channel measurement result.

[0442] As an embodiment, the second moment is a moment after the first moment and before the sending behavior of triggering the second measurement report.

[0443] As an embodiment, at least one new channel measurement is included between the first moment and the second moment.

[0444] As an embodiment, at least one of at least one new channel prediction result predicted by the first node after the second moment satisfies the channel switching condition, or satisfies any condition in the first condition set.

[0445] As an embodiment, the second measurement report is used to trigger the sending of the second signaling.

[0446] As an embodiment, the second signaling instructs the first node to switch the radio bearers in the second radio bearer set except the first radio bearer set to the second cell.

[0447] As an embodiment, after switching the wireless bearers in the second wireless bearer set except the first wireless bearer set to the second cell, the first node sends a fourth signaling in the second cell, and the third node receives the fourth signaling in the second cell; wherein, the fourth signaling is RRCReconfigurationComplete (RRC reconfiguration completed).

[0448] As an embodiment, the fourth signaling indicates completion of cell switching to the second cell.

[0449] Example 6

[0450] Embodiment 6 illustrates a signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 6 As shown in the attached Figure 6 In the embodiment, the first node N61 and the second node N62 communicate via a wireless interface.

[0451] for First node N61 , receiving the first signaling in step S611; switching the target radio bearer set to the second cell in step S612; and switching the third radio bearer set in step S613.

[0452] for Second node N62 , sending the first signaling in step S621.

[0453] In Example 6, the first node receives a first signaling, and the first signaling instructs the first node to switch from a first cell to a second cell; in response to the first signaling being received, the target wireless bearer set is switched to the second cell; wherein, whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a proper subset of the second wireless bearer set.

[0454] In Embodiment 6, the first node switches to a third radio bearer set after a first time interval in which the first signaling is received, the third radio bearer set being the first radio bearer set, or the third radio bearer set being composed of radio bearers in the second radio bearer set excluding the first radio bearer set; wherein the target radio bearer set is the first radio bearer set. When the third radio bearer set is the first radio bearer set, the third radio bearer set is switched from the second cell to the first cell; when the third radio bearer set is composed of radio bearers in the second radio bearer set excluding the first radio bearer set, the third radio bearer set is switched from the first cell to the second cell.

[0455] As an embodiment, the first node N61 and the second node N62 are transmitted through at least the first cell.

[0456] As an embodiment, the first node N61 is a UE.

[0457] As an embodiment, the second node N62 is a serving base station of the first node N61 before performing cell switching.

[0458] As an embodiment, the third radio bearer set is switched after a first time interval of switching the target radio bearer set to the second cell.

[0459] As an embodiment, the first node starts a first timer at a third moment, and an initial value of the first timer is the first time interval.

[0460] As a sub-embodiment of the above embodiment, the third moment is a moment of switching the target radio bearer set to the second cell.

[0461] As a sub-embodiment of the above embodiment, the third moment is the moment when the first signaling is received.

[0462] As an embodiment, when the value of the first timer decreases to zero, the first node switches the third wireless bearer set; wherein the third wireless bearer set is the first wireless bearer set, or the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set.

[0463] As a sub-embodiment of the above embodiment, when the value of the first timer decreases to zero, the first node switches the first radio bearer set from the second cell back to the first cell.

[0464] As a sub-embodiment of the above embodiment, when the value of the first timer decreases to zero, the first node switches the radio bearers in the second radio bearer set except the first radio bearer set from the first cell to the second cell.

[0465] As an embodiment, whether the third radio bearer set is the first radio bearer set or is composed of radio bearers in the second radio bearer set except the first radio bearer set depends on UE implementation.

[0466] As an embodiment, whether the third radio bearer set is the first radio bearer set or is composed of radio bearers in the second radio bearer set except the first radio bearer set is determined by the UE itself.

[0467] As an embodiment, after the first wireless bearer set is switched from the first cell to the second cell, when any condition in the second condition set is met, the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set; otherwise, the third wireless bearer set is the first wireless bearer set.

[0468] As an embodiment, when the first timer counts down to zero, if any condition in the second condition set is met, the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set; otherwise, the third wireless bearer set is the first wireless bearer set.

[0469] As an embodiment, during the operation of the first timer, if any condition in the second condition set is met, the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set; otherwise, the third wireless bearer set is the first wireless bearer set.

[0470] As an embodiment, the third signaling indicates the second condition set.

[0471] As an embodiment, the third signaling includes a CondTriggerConfig (condition trigger configuration) field to indicate the second condition set.

[0472] As an embodiment, the third signaling includes an EventTriggerConfig (event trigger configuration) field to indicate the second condition set.

[0473] As an embodiment, the second moment is a moment during which the first timer is running; wherein, between the third moment and the second moment includes obtaining at least one new channel measurement result.

[0474] As an embodiment, prediction is performed based on the at least one new channel measurement result between the third moment and the second moment to obtain at least one new channel prediction result after the second moment.

[0475] As an embodiment, a condition included in the second condition set is: the first node predicts that at least one of at least one new channel prediction results after the second moment satisfies the channel switching condition, or satisfies any condition in the first condition set.

[0476] As an embodiment, one condition included in the second condition set is: the difference between the channel quality measurement or prediction for the same measurement interval of at least one new channel measurement result between the third moment and the second moment and at least one channel prediction result after the first moment is less than a fourth threshold; wherein the fourth threshold is configurable.

[0477] Specifically, a measurement interval #1 is included between the third moment and the second moment, the at least one new channel measurement result between the third moment and the second moment includes a channel measurement result x1 in the measurement interval #1, and at least one channel prediction result after the first moment includes a channel prediction result y1 in the measurement interval #1, and the absolute error value (or relative error value) between x1 and y1 is less than the fourth threshold; wherein the one measurement interval #1 can be extended to more measurement intervals.

[0478] As an embodiment, one of the conditions included in the second condition set is that the difference between the channel quality prediction for the same measurement interval between at least one new channel prediction result after the second moment and at least one channel prediction result after the first moment is less than a fifth threshold; wherein the fifth threshold is configurable.

[0479] Specifically, after the second moment and before the expiration of the first timer, a measurement interval #2 is included, the at least one new channel measurement result after the second moment includes a channel prediction result x2 in the measurement interval #2, and the at least one channel prediction result after the first moment includes a channel prediction result y2 in the measurement interval #2, and the absolute error value (or relative error value) between x2 and y2 is less than the fifth threshold; wherein the one measurement interval #2 can be extended to more measurement intervals.

[0480] As an embodiment, when any condition in the second condition set is not met, the third radio bearer set is the first radio bearer set.

[0481] As an embodiment, after switching the third wireless bearer set, the first node sends a fourth signaling in the second cell; wherein the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set; and the fourth signaling is RRCReconfigurationComplete.

[0482] As a sub-embodiment of the above embodiment, the second node is a serving base station of the first node after performing cell switching, and the second node receives the fourth signaling in the second cell.

[0483] As a sub-embodiment of the above embodiment, the serving base station of the first node after performing cell switching is a third node other than the second node, and the third node receives the fourth signaling in the second cell.

[0484] As an embodiment, after switching the third radio bearer set, the first node sends a fifth signaling in the first cell; wherein the third radio bearer set is the first radio bearer set.

[0485] As an embodiment, the fifth signaling is RRCReestablishmentRequest (RRC reestablishment request).

[0486] As an embodiment, the fifth signaling is used to request to reestablish the RRC connection with the serving base station of the first cell.

[0487] As an embodiment, the first node indicates the reestablishment cause (reestablishmentCause) to the second node through the fifth signaling.

[0488] As a sub-embodiment of the above embodiment, the reconstruction reason is other failure (otherFailure).

[0489] As an embodiment, the reconstruction reason indication indicates that the channel prediction is inaccurate, which is beneficial to the training of the ML or AI model.

[0490] Example 7

[0491] Embodiment 7 illustrates a flowchart of the operation of the first node according to an embodiment of the present application, as shown in the attached Figure 7 As shown in the attached Figure 7 In the example, the first node N71 is the first node in this application.

[0492] for First node N71 ,

[0493] In step S711, receiving a first signaling;

[0494] In step S712, determining whether a second signaling is received within the first time interval;

[0495] In step S713, the radio bearers in the second radio bearer set except the first radio bearer set are switched to the second cell;

[0496] In step S714, switching the third radio bearer;

[0497] Among them, one of step S713 and step S714 is executed.

[0498] As an embodiment, in response to receiving the first signaling in step S711, the first node switches the target radio bearer set to the second cell; wherein the target radio bearer set is the first radio bearer set.

[0499] As an embodiment, the steps before step S711 include: receiving the third signaling

[0500] As an embodiment, the step before step S711 includes: sending the first measurement report.

[0501] As an embodiment, the behavior after step S712 includes: starting the first timer.

[0502] As an embodiment, the behavior after step S712 includes: sending the second measurement report.

[0503] As an embodiment, at least one new channel measurement is performed before sending the second measurement report to obtain the at least one new channel measurement result.

[0504] As an embodiment, before sending the second measurement report, at least one new channel prediction is performed based on the at least one new channel prediction result to obtain the at least one new channel prediction result.

[0505] As an embodiment, the at least one new channel measurement result and the at least one new channel prediction result trigger the sending of the second measurement report.

[0506] As an embodiment, the second measurement report is sent in the second cell within the first time interval.

[0507] As an embodiment, upon receiving the second signaling within the first time interval, the first node executes step S713.

[0508] As an embodiment, the first timer indicates a receiving window of the second signaling, and the first time interval is the length of the receiving window of the second signaling.

[0509] As an embodiment, when the second signaling is received, the first timer is reset to zero.

[0510] As an embodiment, when the first timer is reset to zero, the first node switches the radio bearers in the second radio bearer set except the first radio bearer set to the second cell.

[0511] As an embodiment, if the second signaling is not received within the first time interval, the first node executes step S714.

[0512] As an embodiment, in step S714, the third radio bearer set is the first radio bearer set, or the third radio bearer set is composed of radio bearers in the second radio bearer set except the first radio bearer set.

[0513] As a sub-embodiment of the above embodiment, step S714 includes step S714a, in which the third radio bearer set is switched from the second cell to the first cell, wherein the third radio bearer set is the first radio bearer set.

[0514] As a sub-embodiment of the above embodiment, step S714 includes step S714b, in which the third wireless bearer set is switched from the first cell to the second cell; the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set.

[0515] As an embodiment, one of step S714a and step S714b is performed.

[0516] As an embodiment, whether to perform step S714a or step S714b depends on UE implementation.

[0517] As an embodiment, whether to execute step S714a or step S714b depends on whether any condition in the second condition set is satisfied.

[0518] As a sub-embodiment of the above embodiment, when any condition in the second condition set is not met, step S714a is executed.

[0519] As a sub-embodiment of the above embodiment, when any condition in the second condition set is met, step S714b is executed.

[0520] As an embodiment, it is determined to execute step S714a based on the at least one new channel measurement result and the at least one new channel prediction result.

[0521] As an embodiment, it is determined to execute step S714b based on the at least one new channel measurement result and the at least one new channel prediction result.

[0522] Example 8

[0523] Embodiment 8 illustrates a schematic diagram of RAN domain AI / ML function deployment according to an embodiment of the present application, as shown in the attached figure. Figure 8 The gNB in ​​Example 8 may be replaced by a network device such as an eNB or a 6G base station.

[0524] AI / ML related functions include ML training function (also called AI training, or AI / ML training), ML testing function, ML reasoning (also called AI reasoning, or AI / ML reasoning) function, etc. ML training function, ML testing function, and ML reasoning function can be deployed independently or co-located. The deployment of AI / ML related functions can be achieved through software, such as downloading and / or running executable files; it can also be achieved through a combination of software and hardware, such as accelerating specific computing units through hardware to increase computing speed or save power consumption.

[0525] For ML training functions, they can be deployed in a cross-domain management system or a domain-specific management system; the domain-specific management system is used to manage the RAN domain or the CN (Core Network) domain. For example, the ML training function for MDA (Management Data Analytics) can be deployed in MDAF (MDA function); ML training for network data analysis can be deployed in NWDAF (Network Data Analytics Function), that is, the ML training function is MTLF (Model Training logical function).

[0526] The ML reasoning function can also be deployed in a cross-domain management system or a domain-specific management system; for example, the ML reasoning function is MDAF, or the ML reasoning function is AnLF (Analytics logical function) located in NWDAF.

[0527] Similarly, ML testing capabilities can also be deployed in cross-domain management systems, or domain-specific management systems.

[0528] In Example 8, the RAN domain ML training function 802 is located in the RAN domain management function 803; and the ML reasoning function is located in the base station, that is, the AI / ML reasoning function 804 is located in the gNB805, and the AI / ML reasoning function 806 is located in the gNB807.

[0529] In the attached Figure 8 In the example, the management of the ML inference functions of multiple base stations is completed by the RAN domain management function 803, that is, data interaction with the RAN domain MnS (Management Service) consumer / cross-domain management 801 (see attached Figure 8 ).

[0530] Optionally, the management of the ML reasoning function may also be performed by the base station itself, that is, each base station may independently interact with the RAN domain MnS consumer / cross-domain management 801 for data.

[0531] It should be noted that Example 8 is merely a non-restrictive implementation method; optionally, the ML training function of the RAN domain may also be deployed in the base station; or optionally, some base stations deploy the ML reasoning function and the ML training function of the RAN domain, while some base stations only deploy the ML reasoning function.

[0532] As an embodiment, a gNB (or base station) in Embodiment 8 is the second node of the present application.

[0533] As an example, Figure 4 The controller / processor 475 includes the following Figure 8 An AL / ML inference function in, i.e., 804 or 806.

[0534] As an example, Figure 8 An AL / ML inference function performs ML training based on the target precoding vector; the target reference signal is different from the first reference signal; any reference signal among the multiple reference signals except the first reference signal is associated with a precoding vector, wherein the target precoding vector is associated with the target reference signal.

[0535] Example 9

[0536] Embodiment 9 illustrates a schematic diagram of the AI / ML function deployment of a UE according to an embodiment of the present application, as shown in the attached Fig. 9 Attached Fig. 9 The RAN domain ML training functionality 1505 is optional.

[0537] The UE function 904 is deployed in the first node of the present application, and the UE function 904 includes an AI / ML reasoning function 906; the AI / ML reasoning function 906 uses an ML model (also called an AI model) for reasoning; an ML model is usually trained before being used for AI / ML reasoning.

[0538] As an embodiment, the UE function 904 is located in the adjacent Figure 4 Controller / processor 475 in.

[0539] As an embodiment, the UE function 904 includes a RAN domain ML training function 905, and the RAN domain ML training function 905 runs the training data through the ML model to derive relevant losses, and adjusts the parameters of the ML model based on the calculated losses; the ML training includes at least one of ML initial training, ML re-training, and reinforcement learning.

[0540] The above embodiments can reduce the complexity of the base station, or save air interface resources caused by reporting training data; however, the above embodiments place high demands on the processing capability of the UE side.

[0541] Optionally, the UE function 904 also includes a CN domain ML training function ( Fig. 9 not included).

[0542] Optionally, the UE function 904 further includes an AI / ML deployment function. Fig. 9 Not included, used to load ML models and data.

[0543] As an embodiment, the first node indicates whether the ML training function is supported (RAN domain or CN domain) through capability reporting, and the capability reporting is RRC signaling, or NAS (Non-Access Stratum) signaling.

[0544] As an embodiment, the ML model and related metadata are loaded by the first node from a network device or a remote server.

[0545] Optionally, the UE function 904 is a MnS (Management Service) producer (Producer), providing data to the CN domain MnF (Management Function) 901, and / or the RAN domain MnF902, and / or the cross-domain management system 903 for management or analysis (as shown by the double arrow 907).

[0546] Optionally, the UE function 904 is an MnS consumer, which loads data from the CN domain MnF (Management Function) 901, and / or the RAN domain MnF 902, and / or the cross-domain management system 903 for AI / ML related management, such as management data requests, ML model activation, and / or ML training, etc. (as shown by the double arrow 907).

[0547] As an embodiment, the first channel information in the present application is obtained through reasoning by the AI / ML reasoning function 906.

[0548] As an embodiment, the RAN domain ML training function 905 performs ML training according to a target precoding vector; wherein the target reference signal is different from the first reference signal; any reference signal among the multiple reference signals except the first reference signal is associated with a precoding vector, wherein the target precoding vector is associated with the target reference signal.

[0549] As an embodiment, the first processor includes an attached Fig. 9 An AL / ML reasoning function 906 in.

[0550] As an embodiment, the ML model is based on a neural network.

[0551] As an embodiment, the ML model is based on CNN (Conventional Neural Networks, convolutional neural network).

[0552] As an embodiment, the ML model is based on the Transformer architecture.

[0553] Example 10

[0554] Embodiment 10 illustrates a schematic diagram of a processing system based on artificial intelligence or machine learning according to an embodiment of the present application, as shown in the attached Fig.10 Attached Fig.10 It includes a second processor, a third processor, a fourth processor and a fifth processor.

[0555] In Example 10, the second processor sends a first data set to the third processor, and sends a second data set to the fourth processor; the third processor generates a target first-category parameter group based on the first data set, and the third processor sends the generated target first-category parameter group to the fourth processor; the fourth processor processes the second data set using the target first-category parameter group to obtain a first-category output, and (optionally) the fourth processor sends the first-category output to the fifth processor.

[0556] In the attached Fig.10 In the embodiment, the first type of feedback and the second type of feedback are optional; the third processor includes ML training function; and the fourth processor includes ML reasoning function.

[0557] As an embodiment, at least part of the second processor, the third processor, the fourth processor and the fifth processor is located in the adjacent Figure 4 Controller / processor 475 in.

[0558] As an embodiment, at least part of the second processor, the third processor, the fourth processor and the fifth processor is located in the adjacent Figure 4 Controller / processor 459 in.

[0559] As an embodiment, the fifth processor includes ML testing functionality.

[0560] As an embodiment, the fifth processor includes performance monitoring / evaluation of the ML model.

[0561] As an embodiment, the fourth processor sends the first type of feedback to the third processor, and the first type of feedback is used to trigger recalculation or updating of the target first type parameter group, that is, triggering ML initial training or ML retraining.

[0562] As an embodiment, the fifth processor sends a second type of feedback to the second processor, and the second type of feedback is used to generate the first data set or the second data set, or the second type of feedback is used to trigger the sending of the first data set or the sending of the second data set.

[0563] As an embodiment, the second processor generates the first data set and the second data set based on measurement of a reference signal.

[0564] As an embodiment, the fourth processor belongs to the first node, and the fifth processor belongs to the second node.

[0565] As an embodiment, the first type of output includes the first channel information.

[0566] As an embodiment, the first type of output includes an index of the target reference signal.

[0567] As an embodiment, the second data set includes measurements for the first reference signal, or includes measurements for the second reference signal.

[0568] As an embodiment, the first data set includes training data (Training Data).

[0569] As an embodiment, the third processor is used to train the ML model, and the trained model is described by the target first-category parameter group.

[0570] As an embodiment, the third processor belongs to the first node.

[0571] The above embodiment avoids transferring the first data set to the second node.

[0572] As an embodiment, the third processor belongs to the second node.

[0573] The above embodiments support joint training and optimize system performance.

[0574] As an embodiment, the third processor belongs to the core network.

[0575] The above embodiments support joint training of the entire network, further optimizing system performance.

[0576] As an embodiment, the second data set includes inference data.

[0577] As an embodiment, the fourth processor belongs to the first node.

[0578] As an embodiment, the fourth processing machine constructs a model according to the target first-category parameter group, and then inputs the second data set into the constructed model to obtain the first-category output.

[0579] As an embodiment, the fourth processing machine generates a restored data set according to the first type of output, and an error between the restored data set and the second data set is used to generate the first type of feedback.

[0580] As an embodiment, the first type of feedback is used to reflect the performance of the trained model; when the performance of the trained model cannot meet the requirements, the third processor will recalculate the target first type parameter group.

[0581] As an embodiment, when the error is too large or has not been updated for too long, the performance of the trained model is considered to be unable to meet the requirements.

[0582] As an embodiment, the target first category parameter group includes: one or more of: convolution kernel size, number of convolution layers, convolution step size, pooling kernel size, pooling kernel step size, pooling function, activation function, or number of feature maps.

[0583] As an embodiment, the target first-category parameter group includes: one or more of a convolution kernel, a pooling kernel, a pooling function, an activation function, parameters of a pooling function, or parameters of an activation function.

[0584] Embodiment 11

[0585] Embodiment 11 illustrates a flowchart based on artificial intelligence or machine learning according to an embodiment of the present application, as shown in the attached Fig.11 Attached Fig.11 Including a first operation, a second operation, a third operation, a fourth operation and a fifth operation. In Example 11, the first operation and the second operation belong to the first stage, the third operation belongs to the second stage, the fourth operation belongs to the third stage, and the fifth operation belongs to the fourth stage. Fig.11 In the diagram, the lines with arrows indicate the sequence of the processes.

[0586] As an embodiment, the first operation includes AI / ML training, the second operation includes AI / ML testing, the third operation includes AI / ML simulation, the fourth operation includes AI / ML entity loading, and the fifth operation includes AI / ML inference.

[0587] As an embodiment, the first phase includes a training phase, the second phase includes an emulation phase, the third phase includes a deployment phase, and the fourth phase includes an emulation phase.

[0588] As an embodiment, the first stage includes AI / ML model training.

[0589] As an embodiment, the first stage includes AI / ML model training and AI / ML testing.

[0590] As an embodiment, the AI / ML model training includes initial training and re-training of one or a group of AI / ML entities.

[0591] As an embodiment, the AI / ML model training relies on training data.

[0592] As an embodiment, the AI / ML model training includes AI / ML entity validation.

[0593] As an embodiment, the AI / ML entity verification is used to evaluate the performance of the AI / ML entity.

[0594] As an embodiment, the AI / ML entity verification relies on verification data.

[0595] As an example, if the result of AI / ML entity verification does not meet expectations, the AI / ML model will be retrained.

[0596] As an embodiment, the AI / ML testing includes testing the verified AI / ML entity to estimate the performance of the trained AI / ML model.

[0597] As an example, if the result of the AI / ML test meets expectations, the AI / ML entity proceeds to the next stage; otherwise the AI / ML model will be retrained.

[0598] As an embodiment, the AI / ML testing relies on test data.

[0599] As an embodiment, the second stage includes AI / ML simulation, which performs inference of AI / ML entities in a simulation environment.

[0600] As an embodiment, the AI / ML simulation estimates the performance of AI / ML entity reasoning in a simulation environment before using the AI / ML entity.

[0601] As an embodiment, the second stage is optional.

[0602] As an embodiment, the third stage includes AI / ML entity loading, and the AI / ML entity loading is to obtain the trained AI / ML entity to obtain the desired AI / ML reasoning function.

[0603] As an embodiment, the third stage is optional.

[0604] As an example, when the training function and the inference function are co-located, the third stage is no longer required.

[0605] As an embodiment, the fourth stage includes AI / ML reasoning.

[0606] Example 12

[0607] Embodiment 12 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in the attached figure. Fig.12 shown.

[0608] In the attached Fig.12 In the embodiment, the first node processing device 1200 includes a first receiver 1201 and a first processor 1202; the first node 1200 is a UE.

[0609] In Example 12, the first receiver 1201 receives a first signaling, and the first signaling instructs the first node to switch from the first cell to the second cell; the first processor 1202, in response to the reception of the first signaling, switches the target wireless bearer set to the second cell; wherein, whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a proper subset of the second wireless bearer set.

[0610] As an embodiment, the first receiver 1201 receives a second signaling; the first processor 1202, in response to the receipt of the second signaling, switches the wireless bearers in the second wireless bearer set except the first wireless bearer set to the second cell; wherein the target wireless bearer set is the first wireless bearer set.

[0611] As an embodiment, the first processor 1202 switches a third wireless bearer set after a first time interval in which the first signaling is received, wherein the third wireless bearer set is the first wireless bearer set, or the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set; wherein the target wireless bearer set is the first wireless bearer set.

[0612] As an embodiment, the first processor 1202 switches a third wireless bearer set after a first time interval when the first signaling is received, the third wireless bearer set is the first wireless bearer set, or the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set; wherein the target wireless bearer set is the first wireless bearer set; when the third wireless bearer set is the first wireless bearer set, the third wireless bearer set is switched from the second cell to the first cell; when the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set, the third wireless bearer set is switched from the first cell to the second cell.

[0613] As an embodiment, the first processor 1202 sends a first measurement report in the first cell before receiving the first signaling; wherein the first measurement report is triggered based on a prediction result, and the prediction result is that a switching condition is satisfied, or the prediction result is that the channel quality of the second cell is better than the channel quality of the first cell by more than a first threshold; at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction.

[0614] As an embodiment, the first receiver 1201 receives a third signaling, and the third signaling configures measurement objects for the first cell and the second cell respectively; wherein, before a first moment, at least one channel measurement result is obtained by measuring the measurement object; and at least one channel prediction result after the first moment is obtained by prediction based on the at least one channel measurement result.

[0615] As an embodiment, the first signaling includes a first field, and the first field indicates that the target radio bearer set is the first radio bearer set.

[0616] As an embodiment, the first node 1200 is the first node in this application.

[0617] As an embodiment, the first receiver 1201 includes the attached Figure 4 The receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 and controller / processor 459.

[0618] As an embodiment, the first receiver 1201 includes the attached Figure 4 At least one of the receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 or controller / processor 459.

[0619] As an embodiment, the first processor 1202 includes the attached Figure 4 At least one of the receive processor 456, the multi-antenna receive processor 458, the transmit processor 468, the multi-antenna receive processor 457 or the controller / processor 459.

[0620] As an embodiment, the first processor 1202 includes the attached Figure 4 The receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 and controller / processor 459.

[0621] As an embodiment, the first processor 1202 includes the attached Figure 4At least one of the receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 or controller / processor 459.

[0622] As an embodiment, the first processor 1202 includes the attached Figure 4 The transmitter 454 (including antenna 452), transmit processor 468, multi-antenna transmit processor 457 and controller / processor 459.

[0623] As an embodiment, the first processor 1202 includes the attached Figure 4 At least one of the transmitter 454 (including antenna 452), the transmit processor 468, the multi-antenna transmit processor 457 or the controller / processor 459.

[0624] Embodiment 13

[0625] Embodiment 13 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in the attached figure. Fig.13 shown.

[0626] In the attached Fig.13 In the embodiment, the second node processing device 1300 includes a first transmitter 1301 and a second receiver 1302. The second node 1300 is a base station.

[0627] In embodiment 13, the first transmitter 1301 sends a first signaling, wherein the first signaling indicates that a recipient of the first signaling switches from a first cell to a second cell; wherein, as a response to the first signaling being received, a target wireless bearer set is switched to the second cell; whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a proper subset of the second wireless bearer set.

[0628] As an embodiment, the first transmitter 1301 sends a second signaling; in response to the second signaling being received, the wireless bearers in the second wireless bearer set except the first wireless bearer set are switched to the second cell; wherein the target wireless bearer set is the first wireless bearer set.

[0629] As an embodiment, a second signaling is sent; the radio bearers in the second radio bearer set except the first radio bearer set are switched to the second cell; wherein the target radio bearer set is the first radio bearer set.

[0630] As an embodiment, a third wireless bearer set is switched, and the third wireless bearer set is the first wireless bearer set, or the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set; wherein the target wireless bearer set is the first wireless bearer set.

[0631] As an embodiment, a third wireless bearer set is switched, and the third wireless bearer set is the first wireless bearer set, or the third wireless bearer set is composed of wireless bearers in the second wireless bearer set excluding the first wireless bearer set; wherein the target wireless bearer set is the first wireless bearer set; when the third wireless bearer set is the first wireless bearer set, the third wireless bearer set is switched from the second cell to the first cell; when the third wireless bearer set is composed of wireless bearers in the second wireless bearer set excluding the first wireless bearer set, the third wireless bearer set is switched from the first cell to the second cell.

[0632] As an embodiment, the second receiver 1302 receives a first measurement report in the first cell before sending the first signaling; wherein the first measurement report is triggered based on a prediction result, and the prediction result is that a switching condition is satisfied, or the prediction result is that the channel quality of the second cell is better than the channel quality of the first cell by more than a first threshold; at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction.

[0633] As an embodiment, the first transmitter 1301 sends a third signaling, and the third signaling configures measurement objects for the first cell and the second cell respectively; wherein, before a first moment, at least one channel measurement result is obtained by measuring the measurement object; and at least one channel prediction result after the first moment is obtained based on the at least one channel measurement result.

[0634] As an embodiment, the first signaling includes a first field, and the first field indicates that the target radio bearer set is the first radio bearer set.

[0635] As an embodiment, the second node 1300 is the second node in this application.

[0636] As an embodiment, the first transmitter 1301 includes the attached Figure 4The transmitter 418 (including antenna 420), transmit processor 416, multi-antenna transmit processor 471 and controller / processor 475.

[0637] As an embodiment, the first transmitter 1301 includes the attached Figure 4 At least one of the transmitter 418 (including antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 and the controller / processor 475.

[0638] As an embodiment, the second receiver 1302 includes the attached Figure 4 Receiver 418 (including antenna 420), multi-antenna receive processor 472, receive processor 470 and controller / processor 475.

[0639] As an embodiment, the second receiver 1302 includes the attached Figure 4 At least one of the receiver 418 (including the antenna 420), the multi-antenna receive processor 472, the receive processor 470 and the controller / processor 475.

[0640] 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 related 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 functional module. The present application is not limited to any specific form of combination of software and hardware. The first type of communication node or UE or terminal in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC (enhanced Machine Type Communication) equipment, NB-IoT equipment, vehicle-mounted communication equipment, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication equipment. The second category of communication nodes or base stations or network-side devices in the present application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, transmission and reception nodes TRP (Transmission and Reception Point), relay satellites, satellite base stations, aerial base stations, test equipment, such as transceivers that simulate some functions of base stations, signaling testers and other wireless communication equipment.

[0641] It should be understood by those skilled in the art that the present invention may be implemented in other specified forms without departing from its core or essential features. Therefore, the embodiments disclosed herein should be considered illustrative rather than restrictive in any way. The scope of the invention is determined by the appended claims rather than the preceding description, and all modifications within their equivalent meanings and regions are considered to be included therein.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives a first signaling, where the first signaling indicates that the first node is switched from a first cell to a second cell; The first processor switches the target radio bearer set to the second cell in response to the first signaling being received; Among them, whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first radio bearer set is a true subset of the second radio bearer set.

2. The first node according to claim 1, characterized in that: include: The first receiver receives a second signaling; The first processor, in response to receiving the second signaling, switches the radio bearers in the second radio bearer set except the first radio bearer set to the second cell; The target radio bearer set is the first radio bearer set.

3. The first node according to claim 1 or 2, characterized in that: include: The first processor switches a third radio bearer set after a first time interval when the first signaling is received, the third radio bearer set being the first radio bearer set or the third radio bearer set being composed of radio bearers in the second radio bearer set except the first radio bearer set; The target radio bearer set is the first radio bearer set.

4. The first node according to claim 3, characterized in that: When the third wireless bearer set is the first wireless bearer set, the third wireless bearer set is switched from the second cell to the first cell; when the third wireless bearer set is composed of wireless bearers in the second wireless bearer set except the first wireless bearer set, the third wireless bearer set is switched from the first cell to the second cell.

5. The first node according to claim 3 or 4, characterized in that: include: The first processor sends a first measurement report in the first cell before receiving the first signaling; The triggering of the first measurement report is based on a prediction result, and the prediction result is that a switching condition is met, or the prediction result is that the channel quality of the second cell is better than the channel quality of the first cell by more than a first threshold; at least one of the channel quality of the first cell and the channel quality of the second cell is obtained through channel measurement and channel prediction.

6. The first node according to any one of claims 3 to 5, characterized in that: include: The first receiver receives a third signaling, where the third signaling configures a measurement object for the first cell and the second cell respectively; Wherein, before a first moment, at least one channel measurement result is obtained by measuring the measurement object; and based on the at least one channel measurement result, prediction is performed to obtain at least one channel prediction result after the first moment.

7. The first node according to any one of claims 1 to 6, characterized in that: The first signaling includes a first field, and the first field indicates that the target radio bearer set is the first radio bearer set.

8. A second node used for wireless communication, characterized in that: include: A first transmitter sends a first signaling, where the first signaling instructs a receiver of the first signaling to switch from a first cell to a second cell; In which, as a response to the first signaling being received, the target wireless bearer set is switched to the second cell; whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a true subset of the second wireless bearer set.

9. A method for a first node used in wireless communication, characterized in that: include: receiving first signaling, where the first signaling instructs the first node to switch from a first cell to a second cell; In response to receiving the first signaling, switching the target radio bearer set to the second cell; Among them, whether the target radio bearer set is the first radio bearer set or the second radio bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first radio bearer set is a true subset of the second radio bearer set.

10. A method for a second node used in wireless communication, characterized in that: include: Sending a first signaling, where the first signaling instructs a recipient of the first signaling to switch from a first cell to a second cell; In which, as a response to the first signaling being received, the target wireless bearer set is switched to the second cell; whether the target wireless bearer set is the first wireless bearer set or the second wireless bearer set depends on the channel quality of the first cell and the channel quality of the second cell; the channel quality of the first cell and the channel quality of the second cell are respectively obtained by at least the former of channel measurement and channel prediction; the first wireless bearer set is a true subset of the second wireless bearer set.

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