Method and device used for wireless communication

Abstract

Disclosed are a method and device for wireless communication, the method comprising: receiving a first signaling, the first signaling indicating to release an RRC connection; the cell selection unit is used as a response to receiving the first signaling, enters an RRC idle state or an RRC inactive state, enters the RRC idle state or the RRC inactive state along with the behavior, and executes cell selection; the behavioral performing cell selection includes evaluating a first cell within a target length of time; the target time length depends on whether the first SSB group is request-based; the first SSB group belongs to the first cell; wherein the meaning of whether the target time length of the sentence depends on the SSB of the first cell is based on the request comprises the following steps: when the SSB of the first cell is based on the request, the target time length is a first numerical value; the target time length is a second value when the SSB of the first cell is not request-based. According to the invention, cell selection can be better carried out in a complex environment through the first signaling.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and relates to measurement, cell selection, and energy saving. 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 Fifth Generation, 5G) technology, and the NR WI (Work Item) was passed at the 3GPP RAN #75 plenary meeting, and the standardization work on NR began.

[0003] In communication, both LTE (Long Term Evolution) and 5G NR involve accurate reception of reliable information, optimized energy efficiency, determination of information validity, flexible resource allocation, scalable system structure, efficient non-access layer information processing, low service interruption and drop rate, and support for low power consumption. This is of great significance to the normal communication between base stations and user equipment, the reasonable scheduling of resources, and the balancing of system loads. It can be said to be the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and improving service quality. It is indispensable for eMBB (ehanced Mobile BroadBand), URLLC (Ultra Reliable Low Latency Communication) and eMTC (enhanced Machine Type Communication). At the same time, in IIoT (Industrial Internet of Things, Industrial Internet of Things, V2X (Vehicular to X, vehicle-mounted communication), device-to-device communication, unlicensed spectrum communication, user communication quality monitoring, network planning optimization, NTN (Non Territerial Network, non-terrestrial network communication), TN (Territerial Network, terrestrial network communication), dual connectivity (Dual connectivity) system, wireless resource management and multi-antenna codebook selection, signaling design, neighbor management, business management, beamforming, there are extensive needs, information transmission methods are divided into broadcast and unicast, both transmission methods are essential for 5G systems, because they are very helpful to meet the above requirements. The UE can be connected to the network directly or through a relay.

[0004] As the scenarios and complexity of the system continue to increase, higher requirements are placed on reducing interruption rates, reducing latency, enhancing reliability, enhancing system stability, business flexibility, and power saving. At the same time, compatibility between different versions of different systems also needs to be considered during system design.

[0005] The 3GPP standardization organization has done relevant standardization work for 5G and formed a series of standards. The standard contents can be referenced:

[0006] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.101-1 / 38101-1- h00.zip

[0007] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.304 / 38304-h00.zip

[0008] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.321 / 38321-h00.zip

[0009] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.331 / 38331-h00.zip Summary of the invention

[0010] In a wireless communication system, when a terminal enters the RRC idle state (RRC_IDLE) or the RRC inactive state (RRC_INACTIVE), a cell selection is required. Cell selection involves cell evaluation, such as evaluating the first cell. The terminal evaluates the first cell within the target time length. The evaluation of the first cell is related to whether the first SSB group is based on a request. Therefore, how to determine the target time length is a problem that needs to be solved. The researchers also found that when the target time length is too short, the first node may not be able to complete the cell evaluation. When the target time length is too long, it may take a long time to evaluate the cell and may cause a delay in cell selection. Therefore, it is necessary to determine a reasonable target time length. The researchers also found that whether the first SSB group of the first cell is based on a request affects the time of the cell evaluation. Therefore, it is best to determine the evaluation time of the first cell based on whether the first SSB group of the first cell is based on a request, so that the cell evaluation can be completed within an appropriate time. The researchers further found that the first SSB group of the first cell is request-based, which is beneficial to saving electricity in the first cell and is beneficial to green environmental protection. However, it poses new challenges to the evaluation of the first cell. It is necessary to reasonably determine the evaluation time of the cell based on this new situation. At the same time, when the first SSB group of the first cell may be dynamically or semi-statically sent in a request-based manner, the target time length should be determined more flexibly.

[0011] In view of the above-mentioned problems, this application provides a solution.

[0012] It should be noted that, in the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other. At the same time, the method proposed in the present application can also be used to solve other problems in communication, such as related problems encountered in the evolving mobile communication system.

[0013] As an embodiment, the interpretation of the terminology in this application refers to the definition of the TS38 series of specification protocols of 3GPP.

[0014] As an example, the interpretation of the terms in the present application refers to the definitions of the TS37 series of specification protocols of 3GPP.

[0015] The present application discloses a method in a first node used for wireless communication, comprising:

[0016] receiving a first signaling indicating the release of an RRC connection; as a response to receiving the first signaling, entering an RRC idle state or an RRC inactive state, entering the RRC idle state or the RRC inactive state with the behavior, and performing cell selection; the behavior performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell;

[0017] Among them, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0018] As an embodiment, the problems to be solved by the present application include: how a node entering an RRC idle state or an inactive state determines the target time length, and / or how to determine the target time length based on whether the first SSB group is request-based, that is, how to evaluate the time of the first cell.

[0019] As an embodiment, the benefits of the above method include: saving electricity, especially network electricity; supporting the SSB of a cell to be sent in a request-based manner, which is more flexible; reducing the time for cell selection, improving the reliability of cell selection, and avoiding or shortening the time when the terminal is unreachable.

[0020] Specifically, according to one aspect of the present application, the first cell is a candidate cell for cell selection.

[0021] Specifically, according to one aspect of the present application, the phrase evaluating the first cell means or includes: measuring at least one SSB in the first SSB group and obtaining a first measurement result; the first measurement result measures the first quality.

[0022] Specifically, according to one aspect of the present application, the phrase evaluating the first cell means or includes: evaluating the quality of the first cell.

[0023] Specifically, according to one aspect of the present application, the phrase "evaluating the first cell" means or includes: evaluating whether the first cell is a suitable cell.

[0024] Specifically, according to one aspect of the present application, the phrase evaluating the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is request-based; when the first SSB group is request-based, the Srxlev of the first cell includes a first offset; when the first SSB group is not request-based, the Srxlev of the first cell does not include the first offset.

[0025] Specifically, according to one aspect of the present application, the behavior of performing cell selection includes: when no suitable cell is found within the time length of the first value, performing cell evaluation within the time length of the second value; when a suitable cell is found within the time length of the first value, selecting the suitable cell.

[0026] Specifically, according to one aspect of the present application, the second value depends on the period of requesting resources of the SSB included in the first SSB group.

[0027] Specifically, according to one aspect of the present application, paging is monitored on at least one time-frequency resource; the at least one time-frequency resource depends on whether the first SSB group is request-based.

[0028] Specifically, according to one aspect of the present application, as a response to a first condition being met, a first signal is sent, the first signal requesting the SSB of the first cell; the SSB of the first cell is received; wherein the first condition includes failure to receive the SSB of the first cell within a first value of time length.

[0029] Specifically, according to one aspect of the present application, as a response to the second condition being met, a first signal is sent, the first signal requesting the SSB of the first cell; the SSB of the first cell is received; wherein the second condition includes failure to find a suitable cell within a time length of a third value.

[0030] Specifically, according to one aspect of the present application, as a response to the first cell not satisfying the S criterion within a first time length, measurement of all neighboring cells is initiated; the first time length depends on whether the first SSB group is request-based; wherein the first node selects the first cell.

[0031] Specifically, according to one aspect of the present application, the first node is an Internet of Things terminal.

[0032] Specifically, according to one aspect of the present application, the first node is a user equipment.

[0033] Specifically, according to one aspect of the present application, the first node is a relay.

[0034] Specifically, according to one aspect of the present application, the first node is an access network device.

[0035] Specifically, according to one aspect of the present application, the first node is a vehicle-mounted terminal.

[0036] Specifically, according to one aspect of the present application, the first node is an aircraft.

[0037] Specifically, according to one aspect of the present application, the first node is a mobile phone.

[0038] The present application discloses a first node used for wireless communication, comprising:

[0039] A first receiver receives a first signaling, wherein the first signaling indicates releasing an RRC connection; as a response to receiving the first signaling, enters an RRC idle state or an RRC inactive state, enters the RRC idle state or the RRC inactive state with the behavior, and performs cell selection; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell;

[0040] Among them, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0041] As an embodiment, compared with the traditional solution, this application has the following advantages:

[0042] It helps users in RRC idle state or RRC inactive state to perform cell evaluation within a reasonable time, and can not only complete the evaluation of a suitable cell, but also stop the unlimited evaluation of unsuitable cells in time.

[0043] Less complexity and lower development cost.

[0044] More flexible.

[0045] Helps save power on your network.

[0046] It ensures the continuity of communication and coverage and shortens the access delay.

[0047] Request-based SSB is not supported by legacy users. If request-based SSB can be supported, it will be beneficial for obtaining services from cells that use request-based SSB. Therefore, it will be very beneficial for the sending and receiving of services and timely response to paging. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0049] Figure 1 A flowchart of receiving a first signaling, entering an RRC idle state or an RRC inactive state, and performing cell selection according to an embodiment of the present application is shown;

[0050] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0051] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0052] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0053] Figure 5 A flowchart of wireless signal transmission according to an embodiment of the present application is shown;

[0054] Figure 6 A schematic diagram of cell evaluation according to an embodiment of the present application is shown;

[0055] Figure 7 A schematic diagram of a first cycle according to an embodiment of the present application is shown;

[0056] Figure 8 A schematic diagram of a first timer according to an embodiment of the present application is shown;

[0057] Fig. 9 A schematic diagram illustrating a processing device in a first node according to an embodiment of the present application is illustrated;

[0058] Fig.10 A schematic diagram of a processing device used in a first node according to an embodiment of the present application is illustrated.

[0059] Implementation

[0060] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0061] Example 1

[0062] Embodiment 1 illustrates a flowchart of receiving a first signaling, entering an RRC idle state or an RRC inactive state, and performing cell selection according to an embodiment of the present application, as shown in the attached Figure 1 Attached Figure 1 In the figure, each box represents a step. It should be emphasized that the order of the boxes in the figure does not represent the temporal relationship between the steps represented.

[0063] In Embodiment 1, the first node in the present application receives the first signaling in step 101, enters the RRC idle state or the RRC inactive state in step 102; and performs cell selection in step 103.

[0064] Among them, the first signaling indicates the release of the RRC connection; the first signaling triggers the first node to enter the RRC idle state or the RRC inactive state; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell; the sentence "the target time length depends on whether the SSB of the first cell is based on a request" means: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0065] As an embodiment, the first node is a UE (User Equipment).

[0066] As an example, the interpretation of the terms in the present application refers to the definitions of the TS38 series of specification protocols of 3GPP.

[0067] As an embodiment, the first node is in an RRC connected state when receiving the first signaling.

[0068] As an embodiment, the method proposed in the present application is independent of the secondary link communication.

[0069] As an embodiment, the method proposed in the present application is applied to direct communication between the terminal and the network.

[0070] As an embodiment, the serving cell refers to the cell where the UE resides. Performing a cell search includes the UE searching for a suitable cell of the selected PLMN (Public Land Mobile Network) or SNPN (Stand-alone Non-Public Network), selecting the suitable cell to provide available services, and monitoring the control channel of the suitable cell. This process is defined as residing on the cell; that is, a residing cell is the serving cell of the UE relative to the UE. Residing on a cell in the RRC idle state or the RRC inactive state has the following benefits: it enables the UE to receive system information from the PLMN or SNPN; after registration, if the UE wishes to establish an RRC connection or continue a suspended RRC connection, the UE can do so by performing initial access on the control channel of the residing cell; the network can page the UE; and the UE can receive ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert System) notifications.

[0071] As an embodiment, for a UE in an RRC connected state that is not configured with CA / DC (carrier aggregation / dual connectivity), there is only one service cell including a primary cell. For a UE in an RRC connected state that is configured with CA / DC (carrier aggregation / dual connectivity), the service cell is used to indicate a set of cells including a special cell (SpCell) and all cells from the small cell. The primary cell (Primary Cell) is an MCG (Master Cell Group) cell that operates on the main frequency. The UE performs an initial connection establishment process or initiates connection reconstruction on the primary cell. For dual connection operations, the special cell refers to the PCell (Primary Cell) of the MCG or the PSCell (Primary SCGCell) of the SCG (Secondary Cell Group); if it is not a dual connection operation, the special cell refers to the PCell.

[0072] As an embodiment, the operating frequency of the SCell (Secondary Cell) is a secondary frequency.

[0073] As an example, individual contents of an information element are referred to as fields.

[0074] As an embodiment, MR-DC (Multi-Radio Dual Connectivity) refers to dual connectivity between E-UTRA and NR nodes, or dual connectivity between two NR nodes.

[0075] As an embodiment, in MR-DC, the wireless access node that provides the control plane connection to the core network is the master node, which may be a master eNB, a master ng-eNB, or a master gNB.

[0076] As an embodiment, MCG refers to a group of service cells associated with a master node in MR-DC, including SpCells, and may also, optionally, include one or more SCells.

[0077] As an embodiment, PCell is the SpCell of MCG.

[0078] As an embodiment, the PSCell is the SpCell of the SCG.

[0079] As an embodiment, in MR-DC, the control plane connection to the core network is not provided, and the radio access node that provides additional resources to the UE is a slave node. The slave node can be an en-gNB, a slave ng-eNB or a slave gNB.

[0080] As an embodiment, in MR-DC, a group of service cells associated with a slave node is a SCG (secondary cell group), including a SpCell and, optionally, one or more SCells.

[0081] As an embodiment, after the first node enters the RRC idle state or the RRC inactive state, there is no SCG and no MCG.

[0082] As an embodiment, MCG and SCG are configured in the RRC connected state.

[0083] As an embodiment, after the first node enters the RRC idle state or the RRC inactive state, it selects a cell and resides in the cell if a suitable cell is found.

[0084] As an embodiment, the RRC information block refers to an information block (information element) in an RRC message.

[0085] As an embodiment, SSB may be referred to as SS / PBCH, or SS block.

[0086] As an embodiment, the synchronization signal combined PBCH block (SSB) includes a master synchronization signal and a slave synchronization signal, and the master synchronization signal, the slave synchronization signal and the PBCH occupy fixed time-frequency resources.

[0087] As an embodiment, PBCH carries MIB (master Information block), and MIB indicates key information required for accessing the system including the system frame number.

[0088] As a sub-embodiment of this embodiment, the MIB carries information required for receiving SIB1.

[0089] As a sub-embodiment of this embodiment, the MIB determines a set of common control resources.

[0090] As a sub-embodiment of this embodiment, the MIB indicates a common subcarrier spacing.

[0091] As a sub-embodiment of this embodiment, the MIB indicates whether the cell is barred.

[0092] As an embodiment, the SS / PBCH block is used for measurement.

[0093] As an embodiment, in the prior art, the acquisition of SIB1 and MIB is independent of requests.

[0094] As an embodiment, those skilled in the art should understand that what is the RRC connected state, the RRC idle state, and the RRC inactive state are prior arts.

[0095] As an embodiment, the first signaling is RRC signaling.

[0096] As an embodiment, the first signaling is higher layer signaling.

[0097] As an embodiment, the first signaling includes NAS signaling.

[0098] As an embodiment, the first signaling includes a RRCRelease message.

[0099] As an embodiment, the first signaling includes an RRCConnectionRelease message.

[0100] As an embodiment, the first signaling includes a RRCReleaseNR message.

[0101] As an embodiment, before receiving the first signaling, the first node is in an RRC connected state.

[0102] As an embodiment, before receiving the first signaling, the first node is not in an RRC connected state.

[0103] As a sub-embodiment of this embodiment, the first signaling is a part of a random access procedure.

[0104] As a sub-embodiment of this embodiment, the first signaling is used to respond to the RRC establishment request sent by the first node.

[0105] As a sub-embodiment of this embodiment, the first signaling is used to respond to the RRC recovery request sent by the first node.

[0106] As an embodiment, releasing the RRC connection includes: leaving the RRC connection state.

[0107] As an embodiment, releasing the RRC connection includes: releasing wireless resources.

[0108] As an embodiment, releasing the RRC connection includes: resetting MAC.

[0109] As an embodiment, releasing the RRC connection includes: releasing the radio bearer.

[0110] As an embodiment, releasing the RRC connection includes: stopping at least one timer.

[0111] As an embodiment, releasing the RRC connection includes: releasing the key.

[0112] As an embodiment, releasing the RRC connection includes: releasing the measurement object.

[0113] As an embodiment, releasing the RRC connection includes: releasing dedicated random access resources.

[0114] As an embodiment, releasing the RRC connection includes: releasing the RLC bearer and / or the RLC entity.

[0115] As an embodiment, releasing the RRC connection includes: releasing radio bearers other than SRB0 (signaling radio bearer 0).

[0116] As an embodiment, the first signaling indicates at least a first cell.

[0117] As an embodiment, the first signaling indicates at least the first cell only when the first SSB group is based on a request.

[0118] As an embodiment, when the first SSB group is not based on a request, the first cell is any candidate cell for cell selection.

[0119] As an embodiment, when the first SSB group is not request-based, the first cell is any cell found in the cell search.

[0120] As an embodiment, when the first SSB group is not request-based, the system information broadcast by the cell in which the first node resides indicates the first cell.

[0121] As an embodiment, the first signaling indicating at least the first cell includes: the first signaling only indicates the first cell.

[0122] As an embodiment, the first signaling indicating at least a first cell includes: the first signaling indicating a cell list, and the cell list includes the first cell.

[0123] As a sub-embodiment of this embodiment, the cell list includes multiple cells.

[0124] As an embodiment, the first cell is the sender of the first signaling.

[0125] As an embodiment, the first cell is the PCell of the first node when receiving the first signaling.

[0126] As an embodiment, the first cell is a neighboring cell of the first node.

[0127] As an embodiment, the first signaling indicates the first cell by indicating a global identity of the first cell.

[0128] As an embodiment, the first signaling indicates the first cell by indicating a physical cell identity of the first cell.

[0129] As an embodiment, the first signaling indicates the first cell by indicating a physical cell identity and / or frequency of the first cell.

[0130] As an embodiment, the first signaling includes the identity of the first cell.

[0131] As an embodiment, upon receiving the first signaling, the first node releases the RRC connection.

[0132] As an embodiment, the first signaling triggers the first node to leave the RRC connection state.

[0133] As an embodiment, the first signaling triggers the first node to enter an RRC idle state.

[0134] As an embodiment, the first signaling triggers the first node to enter an RRC inactive state.

[0135] As an embodiment, the first signaling triggers the first node to enter an RRC idle state.

[0136] As an embodiment, the first signaling indicates whether the first node enters an RRC idle state or an RRC inactive state.

[0137] As an embodiment, when the first signaling does not instruct the first node to enter the RRC inactive state, the first node enters the RRC idle state.

[0138] As an embodiment, when the first signaling includes the first domain, the first node enters an RRC inactive state.

[0139] As an embodiment, when the first signaling does not include the first domain, the first node enters the RRC idle state.

[0140] As an embodiment, the first field is suspendConfig.

[0141] As an embodiment, the execution of the first signaling includes entering an RRC idle state or entering an RRC inactive state.

[0142] As an embodiment, the execution of the first signaling includes executing cell selection.

[0143] As an embodiment, upon receiving the first signaling, the first node must enter an RRC idle state or an RRC inactive state.

[0144] As an embodiment, upon receiving the first signaling, the first node must perform cell selection.

[0145] As an embodiment, when entering the RRC idle state, the first node must perform cell selection.

[0146] As an embodiment, when entering the RRC inactive state, the first node must perform cell selection.

[0147] As an embodiment, through cell selection, the first node searches for a suitable cell of a selected PLMN (Public Land Mobile Network).

[0148] As an embodiment, a network, such as a core network, configures the first node to select which PLMN.

[0149] As an embodiment, a SIM (Subscriber Identity Module) card of the first node may be pre-configured with which PLMN the first node selects.

[0150] As an embodiment, the cell selection includes: performing required measurements.

[0151] As an embodiment, the cell selection includes: detecting and synchronizing with a broadcast channel; receiving and processing broadcast information; and submitting system information of the non-access layer to the non-access layer.

[0152] As an embodiment, the cell selection includes: searching for a suitable cell.

[0153] As an embodiment, the cell selection includes: if a cell is found to satisfy the cell selection criteria, then camping on the cell.

[0154] As an embodiment, the measurement process included in the cell selection includes evaluating the first cell within the target time length.

[0155] As an embodiment, the first node needs to complete the evaluation of the first cell within the target time length.

[0156] As an embodiment, the target time length is for the first cell.

[0157] As an embodiment, evaluating the first cell within the target time length belongs to a measurement process or a measurement requirement.

[0158] As an embodiment, evaluating the first cell includes evaluating the quality of the first cell.

[0159] As an embodiment, evaluating the first cell includes evaluating whether the first cell is a suitable cell.

[0160] As an embodiment, evaluating the first cell includes performing measurement on the first cell and determining whether the measurement result meets a criterion for cell selection.

[0161] As an embodiment, evaluating the first cell includes performing measurement on the first cell and determining whether the measurement result is higher than a certain threshold.

[0162] As a sub-embodiment of this embodiment, the certain threshold is network configured.

[0163] As a sub-embodiment of this embodiment, if the measurement result of the first cell is higher than the certain threshold, the first cell may be selected.

[0164] As an embodiment, the first SSB group includes at least one SSB.

[0165] As an embodiment, the first SSB group is associated with at least one SSB-index.

[0166] As an embodiment, each SSB in the first SSB group is associated with an SSB-index respectively.

[0167] As an embodiment, an SSB-index is used to identify an SSB.

[0168] As an embodiment, an SSB-index is an index of an SSB.

[0169] As an embodiment, the first signaling indicates the first SSB group.

[0170] As an embodiment, the first signaling indicates the first SSB group by indicating each SSB in the first SSB group.

[0171] As an embodiment, the first signaling indicates the first SSB group by indicating the index of each SSB in the first SSB group.

[0172] As an embodiment, the first SSB group consists of all SSBs of the first cell.

[0173] As an embodiment, the first SSB group includes only one SSB.

[0174] As an embodiment, the first SSB group consists of the K SSBs with the best quality in the first cell.

[0175] As a sub-embodiment of this embodiment, K is a positive integer.

[0176] As a sub-embodiment of this embodiment, K is equal to 1.

[0177] As a sub-embodiment of this embodiment, the K SSBs with the best quality are the K SSBs with the best measurement results.

[0178] As an embodiment, the first SSB group consists of SSBs of the first cell that participate in evaluating the quality of the first cell.

[0179] As an embodiment, the first SSB group consists of all CD-SSBs (cell defining SSBs) of the first cell.

[0180] As an embodiment, CD-SSB is an SSB associated with SIB1.

[0181] As an embodiment, the first node may obtain SIB1 from CD-SSB or obtain the search space of the PDCCH that needs to be monitored to receive SIB1.

[0182] As an embodiment, NCD-SSB is an SSB that does not indicate SIB1.

[0183] As an embodiment, the first node cannot obtain SIB1 through NCD-SSB.

[0184] As an embodiment, the first node cannot obtain the search space of the PDCCH (physical downlink control channel) that needs to be monitored to receive SIB1 through NCD-SSB.

[0185] As an embodiment, when the first cell includes request-based SSBs, the first SSB group consists of all request-based SSBs of the first cell.

[0186] As an embodiment, the first SSB group consists of all request-based SSBs of the first cell.

[0187] As an embodiment, the first SSB group consists of all SSBs of the first cell indicated by the first signaling.

[0188] As an embodiment, the first SSB group consists of all SSBs for measurement of the first cell indicated by the first signaling.

[0189] As an embodiment, the first SSB group is based on a request, then each SSB of the first SSB group is based on a request.

[0190] As an embodiment, if the first SSB group is based on a request, the first SSB group will not be actively sent.

[0191] As an embodiment, the first SSB group is based on request (on demand), so the first node needs to send a request signal before the first cell sends the SSB.

[0192] As an embodiment, the first SSB group is based on request (on demand), so the first node needs to send a request signal, and the first cell will send the requested SSB.

[0193] As an example, request-based SSB is important for saving network power.

[0194] As an embodiment, if the first SSB is not request-based, then the SSBs in the first SSB group are actively sent by the network.

[0195] As an embodiment, the first SSB is not request-based, and the SSBs in the first SSB group can be received without being requested.

[0196] As an embodiment, the first SSB is not request-based, and to receive the SSB in the first SSB group, the first node does not need to send a request signal.

[0197] As an embodiment, the first signaling indicates the first SSB group through SSB-ToMeasure.

[0198] As an embodiment, the SSBs indicated by SSB-ToMeasure constitute the first SSB group.

[0199] As an embodiment, the phrase that the first SSB group belongs to the first cell means or includes: each SSB in the first SSB group belongs to the first cell.

[0200] As an embodiment, the phrase “the first SSB group belongs to the first cell” means or includes: the first SSB group is sent by the first cell.

[0201] As an embodiment, the phrase "the first SSB group belongs to the first cell" means or includes: the first signaling indicates the first cell, including indicating the first SSB group of the first cell.

[0202] As an embodiment, the phrase that the first SSB group belongs to the first cell means or includes: the first SSB group is composed of the SSBs of the first cell indicated by the first signaling.

[0203] As an embodiment, the phrase that the first SSB group belongs to the first cell means or includes: the first SSB group is composed of the SSBs used for measurement or cell selection of the first cell indicated by the first signaling.

[0204] As an embodiment, the phrase that the first SSB group is request-based means or includes: the synchronization signal included in any SSB in the first SSB group is request-based.

[0205] As an embodiment, the phrase that the first SSB group is request-based means or includes: the signal on the PBCH included in any SSB in the first SSB group is request-based.

[0206] As an embodiment, the phrase that the first SSB group is request-based means or includes: the MIB included in any SSB in the first SSB group is request-based.

[0207] As an embodiment, the phrase that the first SSB group is request-based means or includes: the MIB transmitted on the PBCH included in any SSB in the first SSB group is request-based.

[0208] As an embodiment, request-based means or includes: when no request signal is received, the network may not send.

[0209] As an embodiment, request-based means or includes: if you want to receive, you need to send a request signal.

[0210] As an embodiment, the unit of the target time length is milliseconds.

[0211] As an embodiment, the first value and the second value are different.

[0212] As an embodiment, the first value and the second value are configured separately.

[0213] As an embodiment, the first value and the second value are configured by two signalings respectively.

[0214] As a sub-embodiment of this embodiment, the benefits of the above method include: more flexible implementation.

[0215] As an embodiment, the first signaling indicates that the SSBs of the first cell are all request-based.

[0216] As an embodiment, if the first signaling does not indicate that the SSB of the first cell is request-based, then the SSB of the first cell is not request-based.

[0217] As an embodiment, the first signaling configuration requests resources for the SSB of the first cell.

[0218] As an embodiment, when the first signaling does not indicate that the SSB of the first cell is based on a request, the target time length is a second value.

[0219] As an embodiment, the first signaling indicates the first value.

[0220] As an embodiment, the first value is fixed.

[0221] As an embodiment, the first signaling indicates the second value.

[0222] As an embodiment, the second value is greater than the first value.

[0223] As a sub-embodiment of this embodiment, the benefits of the above method include: better evaluation of SSB is based on the quality of the requested cell, which is particularly important when requesting SSB requires additional signaling delay, resulting in the inability to complete the evaluation of the first cell within the time length of the first value.

[0224] As an embodiment, the first value and the second value are both positive integers.

[0225] As an embodiment, the unit of the target time length is milliseconds.

[0226] As an embodiment, the unit of the target time length is seconds.

[0227] As an embodiment, the unit of the target time length is a DRX (Discontinuous Reception) cycle.

[0228] As an embodiment, neither the first value nor the second value is explicitly indicated by the network.

[0229] As a sub-embodiment of this embodiment, the advantages of the above method include: being simpler and clearer to implement.

[0230] As an embodiment, it is necessary to define that the evaluation of a cell, such as the first cell, is completed within a target time length, which can ensure the user experience, ensure timely selection of a cell, and ensure that users can receive network paging in a timely manner.

[0231] As an embodiment, an SSB refers to, corresponds to or occupies certain time-frequency resources.

[0232] As an embodiment, the phrase evaluating the first cell means or includes: measuring at least one SSB in the first SSB group and obtaining a first measurement result; the first measurement result measures the quality of the first cell.

[0233] As a sub-embodiment of this embodiment, measuring at least one SSB in the first SSB group includes measuring one SSB in the first SSB group.

[0234] As a sub-embodiment of this embodiment, measuring at least one SSB in the first SSB group includes measuring any SSB in the first SSB group.

[0235] As a sub-embodiment of this embodiment, measuring at least one SSB in the first SSB group includes measuring all SSBs in the first SSB group.

[0236] As a sub-embodiment of this embodiment, the first node determines which SSBs in the first SSB group to measure based on implementation.

[0237] As a sub-embodiment of this embodiment, the first node determines which SSBs in the first SSB group to measure based on the capabilities of the physical device.

[0238] As a sub-embodiment of this embodiment, the first node measures the first discovered SSB in the first SSB group, and if the quality of the first discovered SSB does not meet the requirements, measures other SSBs in the first SSB group.

[0239] As a sub-embodiment of this embodiment, the first node measures the SSBs in the first SSB group in sequence.

[0240] As a sub-embodiment of this embodiment, the first node measures the SSBs in the first SSB group in sequence until an SSB that meets the quality requirements is found.

[0241] As an embodiment, the phrase “the first measurement result measures the quality of the first cell” means that: the first measurement result includes RSRP (Reference Signal Receiving Power).

[0242] As an embodiment, the phrase that the first measurement result measures the quality of the first cell includes: the first measurement result is an average of measurement results for multiple SSBs in the first SSB group.

[0243] As an embodiment, the phrase that the first measurement result measures the quality of the first cell includes: the first measurement result is the best one among the measurement results for the SSB in the first SSB group.

[0244] As an embodiment, the phrase that the first measurement result measures the quality of the first cell includes: the first measurement result describes the quality of the first cell.

[0245] As an embodiment, the phrase “the first measurement result measures the quality of the first cell” means that: if the first measurement result is large, the quality of the first cell is good; otherwise, the quality of the first cell is not good.

[0246] As an embodiment, the phrase “the first measurement result measures the quality of the first cell” means: if the first measurement result meets the requirement, the quality of the first cell is good; otherwise, the quality of the first cell is not good.

[0247] As a sub-embodiment of this embodiment, the first signaling indicates the requirement.

[0248] As a sub-embodiment of this embodiment, the first cell indicates the requirement.

[0249] As a sub-embodiment of this embodiment, the requirement is fixed.

[0250] As a sub-embodiment of this embodiment, the requirement is configured by the core network or the operator.

[0251] As a sub-embodiment of this embodiment, satisfying the requirement means satisfying a certain threshold.

[0252] As an embodiment, the phrase evaluating the first cell means or includes: evaluating the quality of the first cell.

[0253] As a sub-embodiment of this embodiment, the communication quality of the first cell or the quality of the wireless channel is evaluated.

[0254] As a sub-embodiment of this embodiment, if the quality of the first cell meets the requirement, the user can reside in the first cell.

[0255] As a sub-embodiment of this embodiment, if the quality of the first cell does not meet the requirement, it is impossible or not desirable to stay in the first cell.

[0256] As a sub-embodiment of this embodiment, if the quality of the first cell meets the requirement, then the first cell is a suitable cell.

[0257] As a sub-embodiment of this embodiment, the first signaling indicates the requirement.

[0258] As a sub-embodiment of this embodiment, the first cell indicates the requirement.

[0259] As a sub-embodiment of this embodiment, the requirement is fixed.

[0260] As a sub-embodiment of this embodiment, the requirement is configured by the core network or the operator.

[0261] As a sub-embodiment of this embodiment, satisfying the requirement means satisfying a certain threshold.

[0262] As an embodiment, the phrase evaluating the first cell means or includes: evaluating whether the first cell is a suitable cell.

[0263] As an example, those skilled in the art should understand that a suitable cell is a specific term in this field.

[0264] As an embodiment, a suitable cell is a cell in which the UE can reside. For the NR cell, certain conditions need to be met. The certain conditions refer to Section 4.5 of 3GPP TS 38.304.

[0265] As an embodiment, the phrase evaluating the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is request-based; when the first SSB group is request-based, the Srxlev of the first cell includes a first offset; when the first SSB group is not request-based, the Srxlev of the first cell does not include the first offset.

[0266] As a sub-embodiment of this embodiment, the first node obtains the Srxlev of the first cell by measuring at least one SSB group in the first SSB group.

[0267] As a sub-embodiment of this embodiment, the first offset is non-zero.

[0268] As a sub-embodiment of this embodiment, the first offset is a negative number.

[0269] As a sub-embodiment of this embodiment, the Srxlev of the first cell includes the first offset so that the first cell is less likely to be selected.

[0270] As a sub-embodiment of this embodiment, the first signaling indicates the first offset.

[0271] As a sub-embodiment of this embodiment, the first cell indicates the first offset.

[0272] As a sub-embodiment of this embodiment, the first offset is fixed.

[0273] As an embodiment, the first node performs cell reselection including: determining the Srxlev (cell selection reception level value) of the first cell, whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is request-based; when the first SSB group is request-based, the Srxlev of the first cell includes a first offset; when the first SSB group is not request-based, the Srxlev of the first cell does not include the first offset.

[0274] As a sub-embodiment of this embodiment, the first node obtains the Srxlev of the first cell by measuring at least one SSB group in the first SSB group.

[0275] As a sub-embodiment of this embodiment, the first offset is non-zero.

[0276] As a sub-embodiment of this embodiment, the first offset is a negative number.

[0277] As a sub-embodiment of this embodiment, the Srxlev of the first cell includes the first offset so that the first cell is less likely to be selected.

[0278] As a sub-embodiment of this embodiment, the first signaling indicates the first offset.

[0279] As a sub-embodiment of this embodiment, the first cell indicates the first offset.

[0280] As a sub-embodiment of this embodiment, the first offset is fixed.

[0281] As an embodiment, the behavior of performing cell selection includes: when no suitable cell is found within the time length of the first value, performing cell evaluation within the time length of the second value; when a suitable cell is found within the time length of the first value, selecting the suitable cell.

[0282] As a sub-embodiment of this embodiment, when performing cell evaluation, the first node first assumes that none of the SSBs of the first SSB group are request-based.

[0283] As a sub-embodiment of this embodiment, the first node first performs cell evaluation according to the fact that none of the SSBs of the first SSB group is request-based.

[0284] As a sub-embodiment of this embodiment, when the first node does not find a suitable cell within the time length of the first value, the first node considers that the SSB of the first SSB group is request-based.

[0285] As a sub-embodiment of this embodiment, when the first node does not find a suitable cell within the time length of the first value, the first node requests SSB.

[0286] As a sub-embodiment of this embodiment, the sentence "When no suitable cell is found within the time length of the first value, cell evaluation is performed within the time length of the second value" means: when no suitable cell is found within the time length of the first value, cell evaluation is performed again within the time length of the second value.

[0287] As a sub-embodiment of this embodiment, the sentence "when no suitable cell is found within the time length of the first value, performing cell evaluation within the time length of the second value" means: when no suitable cell is found within the time length of the first value, extending the time of cell evaluation from the first value to the second value.

[0288] As a sub-embodiment of this embodiment, the benefits of the above method include: the first node adaptively determines the time to perform cell evaluation, which is more flexible.

[0289] As an embodiment, the cell evaluation is to evaluate a cell.

[0290] As an embodiment, the cell evaluation is or includes a cell search.

[0291] As an embodiment, selecting the suitable cell includes camping on the selected cell.

[0292] Example 2

[0293] Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in the attached Figure 2 shown.

[0294] Attached Figure 2A diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems is illustrated. The 5G NR or LTE 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-switched 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-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitting receiving node), or some other suitable term. gNB 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.gNB203 is connected to 5GC / EPC210 via the 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 packet-switched streaming services.

[0295] As an embodiment, the first node in the present application is UE201.

[0296] As an embodiment, the base station of the second node in the present application is gNB203.

[0297] As an embodiment, the wireless link from the UE201 to the NR Node B is an uplink.

[0298] As an embodiment, the wireless link from the NR Node B to UE201 is a downlink.

[0299] As an embodiment, the UE 201 supports relay transmission.

[0300] As an embodiment, the UE 201 includes a mobile phone.

[0301] As an embodiment, the UE 201 is a vehicle including a car.

[0302] As an embodiment, the gNB203 is a macrocellular base station.

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

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

[0305] As an embodiment, the gNB203 is a flying platform device.

[0306] As an embodiment, the gNB203 is a satellite device.

[0307] Example 3

[0308] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 for a first node (UE, satellite or aircraft in gNB or NTN) and a second node (satellite or aircraft in gNB, UE or NTN), or between two UEs 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 PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first node and the second node and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides support for inter-zone mobility of the first node between the second node. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second node and the first node. The PC5-S (PC5 Signaling Protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). The radio protocol architecture for the first node and the second node 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 radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services. SRB can be regarded as a service or interface provided by the PDCP layer to a higher layer, such as the RRC layer. In the NR system, SRBs include SRB1, SRB2, SRB3, and SRB4 when it comes to sidelink communication, which are used to transmit different types of control signaling. SRB is a bearer between the UE and the access network, and is used to transmit control signaling including RRC signaling between the UE and the access network. SRB1 has special significance for the UE. After each UE establishes an RRC connection, there will be SRB1 for transmitting RRC signaling. Most of the signaling is transmitted through SRB1. If SRB1 is interrupted or unavailable, the UE must perform RRC reconstruction. SRB2 is generally only used to transmit NAS signaling or signaling related to security. The UE may not configure SRB3. Except for emergency services, the UE must establish an RRC connection with the network for subsequent communication. Although not shown, the first node may have several upper layers above the L2 layer 355. In addition, it also includes a network layer (e.g., 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., remote UE, server, etc.).

[0309] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0310] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0311] As an embodiment, the first signal in the present application is generated in PHY301, or MAC302, or RRC306.

[0312] As an embodiment, the first signaling in the present application is generated in RRC306.

[0313] As an embodiment, the first information in the present application is generated in RRC306.

[0314] As an embodiment, the SIB1 in the present application is generated in RRC306.

[0315] Example 4

[0316] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0317] 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, and may optionally also include a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0318] The second communication device 410 includes a controller / processor 475 , a memory 476 , a receiving processor 470 , a transmitting processor 416 , and may optionally also include a multi-antenna receiving processor 472 , a multi-antenna transmitting processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0319] 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 are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 (Layer-2) 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 forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0320] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0321] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0322] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the reception function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0323] 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 indicating the release of the RRC connection; as a response to receiving the first signaling, enters an RRC idle state or an RRC inactive state, enters the RRC idle state or the RRC inactive state accompanied by the behavior, and performs cell selection; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell; wherein, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0324] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: receiving a first signaling, the first signaling indicating the release of the RRC connection; as a response to receiving the first signaling, entering an RRC idle state or an RRC inactive state, accompanying the behavior of entering the RRC idle state or entering the RRC inactive state, and performing cell selection; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell; wherein, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0325] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0326] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0327] As an embodiment, the first communication device 450 is a UE.

[0328] As an embodiment, the first communication device 450 is a vehicle-mounted terminal.

[0329] As an embodiment, the second communication device 450 is a relay.

[0330] As an embodiment, the second communication device 410 is a satellite.

[0331] As an embodiment, the second communication device 410 is an aircraft.

[0332] As an embodiment, the second communication device 410 is a base station.

[0333] As an embodiment, the receiver 454 (including the antenna 452), the receiving processor 456 and the controller / processor 459 are used to receive the first signaling in the present application.

[0334] As an embodiment, the receiver 454 (including the antenna 452), the receiving processor 456 and the controller / processor 459 are used to receive the first information in the present application.

[0335] As an embodiment, the receiver 454 (including the antenna 452 ), the receiving processor 456 and the controller / processor 459 are used to receive the SIB1 in the present application.

[0336] As an embodiment, the transmitter 454 (including the antenna 452), the transmit processor 468 and the controller / processor 459 are used to send the first signal in the present application.

[0337] Example 5

[0338] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 Attached Figure 5 In the example, U01 corresponds to the first node of the present application. It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in the present application, wherein the steps in F51 are optional.

[0339] for First node U01 , receive the first signaling in step S5101; enter the RRC idle state or the RRC inactive state in step S5102; perform cell selection in step S5103; monitor paging in step S5104; send the first signal in step S5105; receive the SSB in step S5106; start measurement of all neighboring cells in step S5107.

[0340] for The second node U02 , sending the first signaling in step S5201; receiving the first signal in step S5202; sending SSB in step S5203.

[0341] In Example 5, the first signaling indicates the release of the RRC connection; as a response to receiving the first signaling, the first node U01 executes step S5102, and accompanying step S5102, the first node executes step S5103; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell; wherein, the sentence "the target time length depends on whether the SSB of the first cell is based on a request" means: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0342] As an embodiment, the second node U02 is the SpCell of the first node U01.

[0343] As an embodiment, the second node U02 is the MCG of the first node U01.

[0344] As an embodiment, the second node U02 is the first cell.

[0345] As an embodiment, the second node U02 is the PCell of the first node U01 or a base station corresponding to the PCell.

[0346] As an embodiment, the communication interface between the first node U01 and the second node U02 is a Uu interface.

[0347] As an embodiment, step S5102 depends on step S5101.

[0348] As an embodiment, step S5103 depends on step S5101.

[0349] As an embodiment, step S5102 is after step S5101.

[0350] As an embodiment, step S5103 and step S5102 do not need to have a definite timing relationship, for example, they may occur simultaneously.

[0351] As an embodiment, step S5104 is after step S5103.

[0352] As an embodiment, step S5105 is after step S5103.

[0353] As an embodiment, step S5106 is after step S5105.

[0354] As an embodiment, step S5105 triggers step S5106.

[0355] As an embodiment, step S5107 is after step S5203.

[0356] As an embodiment, the second node U02 belongs to the NR network.

[0357] As an embodiment, an RRC connection is established between the networks to which the first node U01 and the second node U02 belong.

[0358] As a sub-embodiment of this embodiment, the RRC connection is released after receiving the first signaling.

[0359] As an embodiment, no matter whether the first node enters the RRC idle state or the RRC inactive state, the first signaling includes: frequency information, and the first node performs cell selection on the frequency indicated by the frequency information.

[0360] As an embodiment, no matter whether the first node enters the RRC idle state or the RRC inactive state, the first signaling includes: measurement configuration.

[0361] As a sub-embodiment of this embodiment, the measurement configuration is for network optimization.

[0362] As an embodiment, the first signaling includes a first domain, the first domain is suspendConfig, the first signaling includes the first domain indicating that the first node U01 enters an RRC inactive state, the first domain indicates at least one of the I-RNTI of the first node U01, the paging cycle of the RAN, the value of the t380 timer, the RAN notification area information, and the SDT configuration.

[0363] As a sub-embodiment of this embodiment, the I-RNTI identifies a suspended UE context of a UE in an RRC inactive state.

[0364] As a sub-embodiment of this embodiment, the t380 timer is started periodically, the t380 is started when entering the RRC inactive state, and the expiration of the t380 triggers the initiation of a RAN area update.

[0365] As a sub-embodiment of this embodiment, the RAN notification area information is within the indicated RAN notification area, and the first node U01 does not need to initiate a RAN area update; when entering a new RAN notification area, the first node U01 needs to initiate a RAN area update.

[0366] As a sub-embodiment of this embodiment, the SDT (small data transmission) configuration includes configuring resources for sending SDT data.

[0367] As a sub-embodiment of this embodiment, the first signaling indicates the first cell.

[0368] As a sub-embodiment of this embodiment, the first signaling indicates the first SSB group.

[0369] As a sub-embodiment of this embodiment, the first signaling indicates that the first SSB group is request-based; the first section U01 evaluates the first cell within the target time length; and the target time length is a second value.

[0370] As a sub-embodiment of this embodiment, after evaluation, it is found that the first cell is a suitable cell, and the first node U01 selects the first cell.

[0371] As an embodiment, the first signaling includes a first domain, the first domain is suspendConfig, the first signaling includes the first domain indicating that the first node U01 enters an RRC inactive state, the first domain indicates at least one of the I-RNTI of the first node U01, the paging cycle of the RAN, the value of the t380 timer, the RAN notification area information, and the SDT configuration.

[0372] As a sub-embodiment of this embodiment, the I-RNTI identifies a suspended UE context of a UE in an RRC inactive state.

[0373] As a sub-embodiment of this embodiment, the t380 timer is started periodically, the t380 is started when entering the RRC inactive state, and the expiration of the t380 triggers the initiation of a RAN area update.

[0374] As a sub-embodiment of this embodiment, the RAN notification area information is within the indicated RAN notification area, and the first node U01 does not need to initiate a RAN area update; when entering a new RAN notification area, the first node U01 needs to initiate a RAN area update.

[0375] As a sub-embodiment of this embodiment, the SDT (small data transmission) configuration includes configuring resources for sending SDT data.

[0376] As a sub-embodiment of this embodiment, the first cell is any candidate cell in cell selection.

[0377] As a sub-embodiment of this embodiment, the first SSB group consists of all SSBs of the first cell.

[0378] As a sub-embodiment of this embodiment, the first SSB group consists of all discovered or detected SSBs of the first cell.

[0379] As a sub-embodiment of this embodiment, the first signaling indicates that the first SSB group is not request-based; the first section U01 evaluates the first cell within the target time length; and the target time length is a first numerical value.

[0380] As a sub-embodiment of this embodiment, after evaluation, it is found that the first cell is a suitable cell, and the first node U01 selects the first cell.

[0381] As an embodiment, the first signaling does not include a first field, and the first field is suspendConfig. If the first signaling does not include the first field, the first node U01 enters an RRC idle state.

[0382] As a sub-embodiment of this embodiment, the first signaling indicates the first cell.

[0383] As a sub-embodiment of this embodiment, the first signaling indicates the first SSB group.

[0384] As a sub-embodiment of this embodiment, the first signaling indicates that the first SSB group is request-based; the first section U01 evaluates the first cell within the target time length; and the target time length is a second value.

[0385] As a sub-embodiment of this embodiment, after evaluation, it is found that the first cell is a suitable cell, and the first node U01 selects the first cell.

[0386] As an embodiment, the first signaling does not include a first field, and the first field is suspendConfig. If the first signaling does not include the first field, the first node U01 enters an RRC idle state.

[0387] As a sub-embodiment of this embodiment, the first cell is any candidate cell in cell selection.

[0388] As a sub-embodiment of this embodiment, the first SSB group consists of all SSBs of the first cell.

[0389] As a sub-embodiment of this embodiment, the first SSB group consists of all discovered or detected SSBs of the first cell.

[0390] As a sub-embodiment of this embodiment, the first signaling indicates that the first SSB group is not request-based; the first section U01 evaluates the first cell within the target time length; and the target time length is a first numerical value.

[0391] As a sub-embodiment of this embodiment, after evaluation, it is found that the first cell is a suitable cell, and the first node U01 selects the first cell.

[0392] As an embodiment, the first node U01 monitors paging on at least one time-frequency resource, and the at least one time-frequency resource depends on whether the first SSB group is request-based.

[0393] As a sub-embodiment of this embodiment, when the first SSB group is not request-based, the at least one time-frequency resource includes K time-frequency resources within the time length of each first numerical value, and K is greater than 0; when the first SSB group is request-based, the at least one time-frequency resource includes K time-frequency resources within the time length of each second numerical value, and K is greater than 0.

[0394] As a sub-embodiment of this embodiment, when the first SSB group is request-based, the at least one time-frequency resource includes fewer time-frequency resources than when the first SSB group is not request-based.

[0395] As a sub-embodiment of this embodiment, when the first SSB group is request-based, the at least one time-frequency resource is more concentrated in the time domain than when the first SSB group is not request-based.

[0396] As a sub-embodiment of this embodiment, when the first SSB group is not request-based, the at least one time-frequency resource is more dispersed in the time domain than when the first SSB group is request-based.

[0397] As a sub-embodiment of this embodiment, the benefits of the above method include that it can save more network power; it also helps to save UE power.

[0398] As an embodiment, the first node U01, in response to the first condition being met, executes step S5105.

[0399] As a sub-embodiment of this embodiment, the first signal requests the SSB of the first cell.

[0400] As a sub-embodiment of this embodiment, the first condition includes failure to receive the SSB of the first cell within a time length of a first value.

[0401] As a sub-embodiment of this embodiment, the first condition includes failure to detect the SSB of the first cell within a time length of a first value.

[0402] As a sub-embodiment of this embodiment, the first condition includes failure to receive or detect the SSB in the first SSB group within a first value of time length.

[0403] As a sub-embodiment of this embodiment, the first SSB group is request-based.

[0404] As a sub-embodiment of this embodiment, the first signal includes a physical layer signal.

[0405] As a sub-embodiment of this embodiment, the first signal is or includes a signal sent on a PRACH (physical random access channel).

[0406] As a sub-embodiment of this embodiment, the first signal is or includes a Preamble signal.

[0407] As a sub-embodiment of this embodiment, the first signal is or includes msg3 of a 4-step random access procedure.

[0408] As a sub-embodiment of this embodiment, the first signal is or includes a MSGA of a 2-step random access procedure.

[0409] As an embodiment, the first node U01, in response to the second condition being met, executes step S5105.

[0410] As a sub-embodiment of this embodiment, the first signal requests the SSB of the first cell.

[0411] As a sub-embodiment of this embodiment, the first condition includes that the second condition includes failure to find a suitable cell within a time length of a third value.

[0412] As a sub-embodiment of this embodiment, the first condition includes that the second condition includes failure to complete the evaluation of the first cell within a time length of a third value.

[0413] As a sub-embodiment of this embodiment, the first SSB group is request-based.

[0414] As a sub-embodiment of this embodiment, the first signal includes a physical layer signal.

[0415] As a sub-embodiment of this embodiment, the first signal is or includes a signal sent on a PRACH (physical random access channel).

[0416] As a sub-embodiment of this embodiment, the first signal is or includes a Preamble signal.

[0417] As a sub-embodiment of this embodiment, the first signal is or includes msg3 of a 4-step random access procedure.

[0418] As a sub-embodiment of this embodiment, the first signal is or includes a MSGA of a 2-step random access procedure.

[0419] As a sub-embodiment of this embodiment, the first signaling indicates the third value.

[0420] As a sub-embodiment of this embodiment, the first cell indicates the third value.

[0421] As a sub-embodiment of this embodiment, the third value is fixed.

[0422] As a sub-embodiment of this embodiment, the third value depends on the first value or the third value depends on the second value.

[0423] As an embodiment, the first node U01 receives the SSB of the first cell in step S5106.

[0424] As a sub-embodiment of this embodiment, in this embodiment, the second node U02 is the first cell, but the present application does not limit this, and the first cell may be a cell other than the second node U02, that is, the SSB received by the first node U01 in step S5106 is sent by a cell other than the second node U02.

[0425] As an embodiment, step S5107 is performed after the first node U01 completes cell selection.

[0426] As a sub-embodiment of this embodiment, the first node U01 selects the first cell in cell selection.

[0427] As an embodiment, when the first cell does not meet the S criterion within a first time length, the first node U01 initiates measurement of all neighboring cells.

[0428] As a sub-embodiment of this embodiment, the first time length depends on whether the first SSB group is request-based.

[0429] As an embodiment, the system information broadcast by the second node U02 indicates all the neighboring cells.

[0430] As an embodiment, the system information broadcast by the cell where the first node U01 resides indicates all the neighboring cells.

[0431] As an embodiment, the system information stored by the first node U01 indicates all the neighboring cells.

[0432] As an embodiment, measurement of all neighboring cells is started to find a suitable cell as quickly as possible.

[0433] As an embodiment, failure to meet the S criterion indicates that the current cell is no longer a suitable cell.

[0434] As an embodiment, the first time length is longer when the first SSB group is based on a request compared to when the first SSB group is not based on a request.

[0435] As an embodiment, when the first SSB group is not based on a request, the first time length is a positive integer multiple of a first value; when the first SSB group is based on a request, the first time length is a positive integer multiple of the second value.

[0436] As an embodiment, the first signaling is not a system information block.

[0437] As an embodiment, the phrase “the first node selects the first cell” means that the first cell is a cell where the first node resides.

[0438] As an embodiment, the phrase “the first node selects the first cell” means that the first cell is a service cell of the first node.

[0439] Example 6

[0440] Embodiment 6 illustrates a schematic diagram of a cell evaluation according to an embodiment of the present application, as shown in the attached figure. Figure 6 shown.

[0441] As an example, Figure 6 The S criterion for cell selection is shown. Figure 6 When the formula in is satisfied, the S criterion for cell selection is satisfied.

[0442] As an example, Figure 6 The Srxlev in the figure is the RX level value selected by the cell, in dB.

[0443] As an example, Figure 6Squal in the cell selection is the quality value in dB.

[0444] As an example, Figure 6 Qoffset in temp It is a temporary offset applied to a cell, in dB.

[0445] As a sub-embodiment of this embodiment, the Qoffset temp It is indicated by the network.

[0446] As a sub-embodiment of this embodiment, when continuous connection establishment failure occurs, the Qoffset temp is applied.

[0447] As an example, Figure 6 Q rxlevmeas It is the measured cell RX level value, namely RSRP.

[0448] As an example, Figure 6 Q qualmeas It is the measured cell quality value, namely RSRQ.

[0449] As an example, Figure 6 Q rxlevmin is the minimum RX level value required.

[0450] As a sub-embodiment of this embodiment, the Q rxlevmin It is indicated by the network, for example via the system information block.

[0451] As a sub-embodiment of this embodiment, the Q rxlevmin It is indicated by the first signaling.

[0452] As an example, Figure 6 Q qualmin is the minimum quality level required, expressed in dB.

[0453] As a sub-embodiment of this embodiment, the Q qualmin It is indicated by the network, for example via the system information block.

[0454] As a sub-embodiment of this embodiment, the Q qualmin It is indicated by the first signaling.

[0455] As an example, Figure 6 Q rxlevminoffset Is applied to Q rxlevmin The offset of

[0456] As an example, Figure 6 Qqualminoffset Is applied to Q qualmin The offset of

[0457] As an example, Figure 6 P compensation is for FR1, that is, for FR2, P compensation is 0.

[0458] As an example, Figure 6 P compensation When indicated by SIB1, SIB2, SIB4, max(P EMAX1 –P PowerClass ,0)–(min(P EMAX2 ,P PowerClass )–min(P EMAX1 ,P PowerClass )); when P compensation When indicated by signaling other than SIB1, SIB2, and SIB4, P compensation Satisfy max(P EMAX1 –P PowerClass ,0); max() is the maximum value operation, min() is the minimum value operation; P EMAX1 ,P EMAX2 It is the maximum transmit power that a UE can use for uplink transmission in a cell, as defined by 3GPP TS 38.101-1; P PowerClass It is the maximum RF transmit power of the UE according to the UE power level, in dBm, P PowerClass For detailed definition, please refer to 3GPP TS 38.101-1.

[0459] As an example, P compensation Only used when the first node supports additional maximum transmit power.

[0460] As an example, Q rxlevminoffset and Q qualminoffset It is only used during cell evaluation in cell selection when periodically searching for a higher priority PLMN.

[0461] As an embodiment, a suitable cell must satisfy the S criterion.

[0462] As an embodiment, when the first SSB group is based on a request, the Srxlev also includes a first offset, and the first offset is not 0.

[0463] As a sub-embodiment of this embodiment, when the first SSB group is not request-based, the Srxlev includes a first offset, and the first offset is equal to 0.

[0464] As an embodiment, when the first SSB group is based on a request, the Squal also includes a first offset, and the first offset is not 0.

[0465] As a sub-embodiment of this embodiment, when the first SSB group is not request-based, the Squal includes a first offset, and the first offset is equal to 0.

[0466] As an embodiment, the benefits of the above method include: it can help the UE to give priority to cells that can receive SSB without request when selecting cells, which is conducive to reducing the delay of cell selection and avoiding missing paging.

[0467] Example 7

[0468] Example 7 illustrates a schematic diagram of the first cycle according to an embodiment of the present application, as shown in the attached Figure 7 shown.

[0469] As an example, Figure 7 Each small square in represents a piece of resource used to request SSB, the resource used to request the SSB is periodic, and the period is the first period.

[0470] As a sub-embodiment of this embodiment, the first signaling indicates the first period.

[0471] As a sub-embodiment of this embodiment, the first signaling indication is used to request resources for the SSB.

[0472] As a sub-embodiment of this embodiment, the first signaling respectively indicates the resources used to request each SSB in the first SSB group.

[0473] As a sub-embodiment of this embodiment, the resources used to request each SSB in the first SSB group are the same.

[0474] As a sub-embodiment of this embodiment, the requested SSB is a request for the SSB in the first SSB group.

[0475] As a sub-embodiment of this embodiment, the SSB is the SSB in the first SSB group.

[0476] As a sub-embodiment of this embodiment, the SSB is any SSB in the first SSB group.

[0477] As a sub-embodiment of this embodiment, the first information indicates the resources used to request the SSB.

[0478] As a sub-embodiment of this embodiment, the first node is only allowed to send a signal requesting SSB on the resources configured for requesting SSB.

[0479] As an embodiment, the period for requesting resources of the SSB included in the first SSB group is the first period.

[0480] As a sub-embodiment of this embodiment, the SSB included in the requesting first SSB group is any SSB in the first SSB group.

[0481] As an embodiment, the second value depends on the first period.

[0482] As an embodiment, the second value is equal to the first period.

[0483] As an embodiment, the second value is equal to the larger one between the first period and the second time length of the first node.

[0484] As an embodiment, the second value is not less than N1 times of the first period, where N1 is a positive integer.

[0485] As a sub-embodiment of this embodiment, the N1 depends on whether the operating frequency is FR1 or FR2. When the operating frequency is FR1, the N1 is equal to 1, and when the operating frequency is FR2, the N1 is not equal to 1.

[0486] As an embodiment, the second value is not less than N1 times the larger one between the first period and the second time length of the first node, where N1 is a positive integer.

[0487] As a sub-embodiment of this embodiment, the N1 depends on whether the operating frequency is FR1 or FR2. When the operating frequency is FR1, the N1 is equal to 1, and when the operating frequency is FR2, the N1 is not equal to 1.

[0488] As an embodiment, the second value is not less than M2 times of the first period, where M2 is a positive integer.

[0489] As a sub-embodiment of this embodiment, M2 is equal to 2.

[0490] As a sub-embodiment of this embodiment, M2 is equal to 4.

[0491] As an embodiment, the second value is not less than M2 times the larger one of the first period and the second time length of the first node, where M2 is a positive integer.

[0492] As a sub-embodiment of this embodiment, M2 is equal to 2.

[0493] As a sub-embodiment of this embodiment, M2 is equal to 4.

[0494] As an embodiment, the second time length is the DRX cycle of the first node.

[0495] As an embodiment, the second time length is the value of the first timer of the first node.

[0496] As an embodiment, the second time length is the larger of the value of the first timer of the first node and the DRX cycle of the first node.

[0497] As an embodiment, the benefits of the above method include: averaging more than one measurement value is conducive to obtaining more accurate results. Therefore, the number of measurement results that can be obtained by estimating the number of SSBs that can be received according to the period of the requestable resources is conducive to obtaining enough measurement results, and the cell evaluation is more accurate. At the same time, the evaluation time on one cell will not be too long, which will affect the evaluation of other cells.

[0498] Example 8

[0499] Example 8 illustrates a schematic diagram of a first timer according to an embodiment of the present application.

[0500] As an embodiment, during the running of the first timer, the first node is not allowed to send a signal requesting SSB.

[0501] As an embodiment, the serving cell of the first node indicates the value of the first timer.

[0502] As an embodiment, the first signaling indicates the value of the first timer.

[0503] As an embodiment, the first information indicates the value of the first timer.

[0504] As an embodiment, the value of the first timer is greater than 0.

[0505] As an embodiment, the first timer is started periodically.

[0506] As an embodiment, the first timer is stopped when entering the RRC connected state.

[0507] As an embodiment, the first timer is started when entering the RRC idle state.

[0508] As an embodiment, the first timer is started when entering the RRC inactive state.

[0509] As an embodiment, the first node is allowed to send a signal requesting SSB only when the first timer is not running.

[0510] As an embodiment, the first timer is not T350.

[0511] As an embodiment, the first timer is for one cell.

[0512] As an embodiment, the first timer is for all cells using request-based SSB.

[0513] As an embodiment, the benefits of the above method include: the first node can be restricted from requesting SSB, which is beneficial to network power saving.

[0514] Example 9

[0515] Embodiment 9 illustrates a structural block diagram of a processing device used in a first node according to an embodiment of the present application; Fig. 9 As shown in the attached Fig. 9 In the embodiment 9, the processing device 900 in the first node includes a first receiver 901 and a first transmitter 902.

[0516] The first receiver 901 receives a first signaling, wherein the first signaling indicates releasing the RRC connection; as a response to receiving the first signaling, enters an RRC idle state or an RRC inactive state, enters the RRC idle state or the RRC inactive state with the behavior, and performs cell selection; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell;

[0517] Among them, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0518] As an embodiment, the phrase evaluating the first cell means or includes: measuring at least one SSB in the first SSB group and obtaining a first measurement result; the first measurement result measures the quality of the first cell.

[0519] As an embodiment, the phrase evaluating the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is request-based; when the first SSB group is request-based, the Srxlev of the first cell includes a first offset; when the first SSB group is not request-based, the Srxlev of the first cell does not include the first offset.

[0520] As an embodiment, the behavior of performing cell selection includes: when no suitable cell is found within the time length of the first value, performing cell evaluation within the time length of the second value; when a suitable cell is found within the time length of the first value, selecting the suitable cell.

[0521] As an embodiment, the second value depends on a period of requesting resources of the SSB included in the first SSB group.

[0522] As an embodiment, the first receiver 901 monitors paging on at least one time-frequency resource; the at least one time-frequency resource depends on whether the first SSB group is request-based.

[0523] As an embodiment, the first transmitter 902, in response to a first condition being met, sends a first signal requesting the SSB of the first cell; the first receiver 901 receives the SSB of the first cell; wherein the first condition includes failure to receive the SSB of the first cell within a first value of time length.

[0524] As an embodiment, the first transmitter 902, in response to the second condition being satisfied, sends a first signal requesting the SSB of the first cell; the first receiver 901 receives the SSB of the first cell; wherein the second condition includes failure to find a suitable cell within a time length of a third value.

[0525] As an embodiment, the first receiver 901, in response to the first cell not satisfying the S criterion within a first time length, initiates measurement of all neighboring cells; the first time length depends on whether the first SSB group is request-based; wherein the first node selects the first cell.

[0526] As an embodiment, the first node is a user equipment (UE).

[0527] As an embodiment, the first node is a terminal supporting NTN.

[0528] As an embodiment, the first node is an aircraft or a ship.

[0529] As an embodiment, the first node is a mobile phone or a vehicle-mounted terminal.

[0530] As an embodiment, the first node is a relay UE and / or a U2N remote UE.

[0531] As an embodiment, the first node is an Internet of Things terminal or an industrial Internet of Things terminal.

[0532] As an embodiment, the first node is a device supporting low-latency and high-reliability transmission.

[0533] As an embodiment, the first receiver 901 includes at least one of the antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller / processor 459, memory 460, or data source 467 in Example 4.

[0534] As an embodiment, the first transmitter 902 includes at least one of the antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, or data source 467 in Embodiment 4.

[0535] Example 10

[0536] Embodiment 10 illustrates a structural block diagram of a processing device used in a first node according to an embodiment of the present application; Fig.10 As shown in the attached Fig.10 In the embodiment 10, the processing device 1000 in the first node includes a first receiver 1001 and a first transmitter 1002.

[0537] A first receiver 1001 receives first information, the first information being broadcast; the first information indicating at least a first cell; performing cell reselection; the behavior of performing cell reselection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell;

[0538] Among them, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

[0539] As an embodiment, the first information includes a system information block.

[0540] As an embodiment, the first information includes one of SIB1, SIB2, SIB3, SIB4, and SIB5.

[0541] As an embodiment, the neighboring cell list included in the first information includes the first cell.

[0542] As an embodiment, the first cell is a neighboring cell.

[0543] As an embodiment, the first information is not SSB.

[0544] As an embodiment, the problem to be solved by the above method is: how to determine the target evaluation time in cell reselection.

[0545] As an embodiment, the advantages of the above method are: in cell reselection, cells that adopt request-based SSB can be better supported; cell evaluation can be completed without spending too much time on the evaluation of a cell.

[0546] As an embodiment, the phrase evaluating the first cell means or includes: measuring at least one SSB in the first SSB group and obtaining a first measurement result; the first measurement result measures the quality of the first cell.

[0547] As an embodiment, the phrase evaluating the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is request-based; when the first SSB group is request-based, the Srxlev of the first cell includes a first offset; when the first SSB group is not request-based, the Srxlev of the first cell does not include the first offset.

[0548] As an embodiment, the behavior of performing cell reselection includes: when no suitable cell is found within the time length of the first value, performing cell evaluation within the time length of the second value; when a suitable cell is found within the time length of the first value, selecting the suitable cell.

[0549] As an embodiment, the second value depends on a period of requesting resources of the SSB included in the first SSB group.

[0550] As an embodiment, the first receiver 1001 monitors paging on at least one time-frequency resource; the at least one time-frequency resource depends on whether the first SSB group is request-based.

[0551] As an embodiment, the first transmitter 1002, in response to a first condition being satisfied, sends a first signal requesting the SSB of the first cell; the first receiver 1001 receives the SSB of the first cell; wherein the first condition includes failure to receive the SSB of the first cell within a first value of time length.

[0552] As an embodiment, the first transmitter 1002, in response to the second condition being satisfied, sends a first signal requesting the SSB of the first cell; the first receiver 1001 receives the SSB of the first cell; wherein the second condition includes failure to find a suitable cell within a time length of a third value.

[0553] As an embodiment, the first receiver 1001, in response to the first cell not satisfying the S criterion within a first time length, initiates measurement of all neighboring cells; the first time length depends on whether the first SSB group is request-based; wherein the first node selects the first cell.

[0554] As an embodiment, the first node is a user equipment (UE).

[0555] As an embodiment, the first node is a terminal supporting NTN.

[0556] As an embodiment, the first node is an aircraft or a ship.

[0557] As an embodiment, the first node is a mobile phone or a vehicle-mounted terminal.

[0558] As an embodiment, the first node is a relay UE and / or a U2N remote UE.

[0559] As an embodiment, the first node is an Internet of Things terminal or an industrial Internet of Things terminal.

[0560] As an embodiment, the first node is a device supporting low-latency and high-reliability transmission.

[0561] As an embodiment, the first receiver 1001 includes at least one of the antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller / processor 459, memory 460, or data source 467 in Example 4.

[0562] As an embodiment, the first transmitter 1002 includes at least one of the antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, or data source 467 in Embodiment 4.

[0563] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, Internet cards, Internet of Things terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication, machine type communication) terminals, eMTC (enhancedMTC, enhanced MTC) terminals, data cards, Internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers, satellite communication equipment, ship communication equipment, NTN user equipment and other wireless communication equipment. The base stations or system equipment in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B) NR Node B, TRP (Transmitter Receiver Point, sending and receiving node), NTN base stations, satellite equipment, flight platform equipment and other wireless communication equipment.

[0564] 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 as 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 for wireless communication, wherein: include: A first receiver receives a first signaling, where the first signaling indicates releasing the RRC connection; In response to receiving the first signaling, entering an RRC idle state or entering an RRC inactive state, accompanied by the behavior of entering the RRC idle state or entering the RRC inactive state, performing cell selection; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; The first SSB group belongs to the first cell; Among them, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

2. The first node according to claim 1, characterized in that: The phrase evaluating the first cell means or includes: measuring at least one SSB in the first SSB group and obtaining a first measurement result; the first measurement result measures the quality of the first cell.

3. The first node according to claim 1 or 2, characterized in that: The phrase evaluating the first cell means or includes: determining the Srxlev of the first cell, whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is request-based; when the first SSB group is request-based, the Srxlev of the first cell includes a first offset; when the first SSB group is not request-based, the Srxlev of the first cell does not include the first offset.

4. The first node according to any one of claims 1 to 3, characterized in that: The behavior of performing cell selection includes: when no suitable cell is found within the time length of the first value, performing cell evaluation within the time length of the second value; when a suitable cell is found within the time length of the first value, selecting the suitable cell.

5. The first node according to any one of claims 1 to 4, characterized in that: The second value depends on a period for requesting resources of the SSBs included in the first SSB group.

6. The first node according to any one of claims 1 to 5, characterized in that: include: A first receiver monitors paging on at least one time-frequency resource; the at least one time-frequency resource depends on whether the first SSB group is request-based.

7. The first node according to any one of claims 1 to 6, characterized in that: include: A first transmitter, in response to a first condition being satisfied, transmits a first signal requesting an SSB for the first cell; The first receiver receives the SSB of the first cell; The first condition includes failure to receive the SSB of the first cell within a first value of time length.

8. The first node according to any one of claims 1 to 7, characterized in that: include: The first transmitter transmits a first signal in response to a second condition being satisfied, the first signal requesting an SSB of the first cell; The first receiver receives the SSB of the first cell; The second condition includes failure to find a suitable cell within a time length of a third value.

9. The first node according to any one of claims 1 to 8, characterized in that: include: A first receiver, in response to the first cell not satisfying the S criterion within a first time length, initiating measurement of all neighboring cells; the first time length depends on whether the first SSB group is based on a request; The first node selects the first cell.

10. A method in a first node for wireless communication, wherein: include: receiving a first signaling indicating to release the RRC connection; In response to receiving the first signaling, entering an RRC idle state or entering an RRC inactive state, accompanied by the behavior of entering the RRC idle state or entering the RRC inactive state, performing cell selection; the behavior of performing cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is based on a request; The first SSB group belongs to the first cell; Among them, the sentence that the target time length depends on whether the SSB of the first cell is based on a request includes: when the SSB of the first cell is based on a request, the target time length is a first value; when the SSB of the first cell is not based on a request, the target time length is a second value.

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