A method and apparatus for wireless communication

Abstract

This application discloses a method and apparatus for wireless communication, including receiving a first signaling, the first signaling indicating the release of an RRC connection; in response to receiving the first signaling, entering an RRC idle state or an RRC inactive state, and performing cell selection; the cell selection includes evaluating a first cell within a target time length; the target time length depends on whether a first SSB group is request-based; the first SSB group belongs to the first cell; wherein, the meaning of the sentence "the target time length depends on whether the SSB of the first cell is request-based" includes: when the SSB of the first cell is request-based, the target time length is a first value; when the SSB of the first cell is not request-based, the target time length is a second value. This application can better perform cell selection in complex environments through the first signaling.

Description

Technical Field

[0001] This application relates to transmission methods and apparatus in wireless communication systems, and relates to measurement, cell selection, and energy saving. Background Technology

[0002] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on 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 conduct research on New Radio (NR) (or Fifth Generation, 5G). The 3GPP RAN #75 plenary meeting adopted the NR WI (Work Item), and began the standardization work of NR.

[0003] In communications, both LTE (Long Term Evolution) and 5G NR involve reliable and accurate information reception, optimized energy efficiency, determination of information validity, flexible resource allocation, scalable system architecture, efficient non-access stratum information processing, low service interruption and drop rate, and support for low power consumption. These are crucial for normal communication between base stations and user equipment, rational resource scheduling, and balanced system load. They are the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and enhancing service quality. They are indispensable for eMBB (enhanced Mobile Broadband), URLLC (Ultra Reliable Low Latency Communication), and eMTC (enhanced Machine Type Communication). Meanwhile, there are extensive needs in IIoT (Industrial Internet of Things), V2X (Vehicle-to-X), Device-to-Device communication, unlicensed spectrum communication, user communication quality monitoring, network planning and optimization, NTN (Non-Territorial Network), TN (Territorial Network), dual connectivity systems, radio resource management and codebook selection for multiple antennas, signaling design, neighbor cell management, service management, and beamforming. Information transmission methods are divided into broadcast and unicast, both essential for 5G systems as they are highly helpful in meeting the above requirements. The UE can connect to the network directly or via a relay.

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

[0005] The 3GPP standardization organization has done relevant standardization work on 5G, resulting in a series of standards. The content of these standards can be found here:

[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 wireless communication systems, when a terminal enters the RRC idle state (RRC_IDLE) or the RRC inactive state (RRC_INACTIVE), cell selection is required. Cell selection involves cell evaluation, such as evaluating a first cell. The terminal evaluates the first cell within a target time period. The evaluation of the first cell depends on whether the first SSB group is request-based. Therefore, determining the target time period is a problem that needs to be solved. Researchers have also found that if the target time period is too short, the first node may not be able to complete the cell evaluation; if the target time period is too long, the evaluation may take too long and may cause a delay in cell selection. Therefore, determining a reasonable target time period is essential. Researchers have also found that whether the first SSB group of the first cell is request-based affects the cell evaluation time. 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 request-based, so that the cell evaluation can be completed within an appropriate time. Researchers further discovered that the first SSB group in the first cell is request-based, which is beneficial for saving electricity in the first cell and is environmentally friendly. However, it poses new challenges to the evaluation of the first cell. The evaluation time of the cell needs to be reasonably determined according to this new situation. At the same time, when the first SSB group in the first cell may be sent in a request-based manner dynamically or semi-statically, the target time length should be determined more flexibly.

[0011] To address the problems mentioned above, this application provides a solution.

[0012] It should be noted that, unless otherwise specified, the embodiments and features in any node of this application can be applied to any other node. Unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. Furthermore, the method proposed in this application can also be used to solve other problems in communication, such as those encountered in evolved mobile communication systems.

[0013] As an example, the interpretation of the terminology in this application is based on the definitions in the 3GPP specification protocol TS38 series.

[0014] As an example, the interpretation of terms in this application is based on the definitions in the 3GPP specification protocol TS37 series.

[0015] This application discloses a method used in a first node of wireless communication, comprising:

[0016] Receive a first signaling instruction indicating the release of the RRC connection; in response to receiving the first signaling instruction, enter an RRC idle state or an RRC inactive state, and perform cell selection; the cell selection includes evaluating a first cell within a target time period; the target time period depends on whether the first SSB group is based on a request; the first SSB group belongs to the first cell;

[0017] The statement that the target duration depends on whether the SSB of the first cell is request-based includes the following meanings: when the SSB of the first cell is request-based, the target duration is a first value; when the SSB of the first cell is not request-based, the target duration is a second value.

[0018] As an example, the problems to be solved by this application include: how a node entering the RRC idle state or inactive state determines the target time length, and / or how to determine the target time length based on whether the first SSB group is based on a request, i.e., the time for evaluating the first cell.

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

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

[0021] Specifically, according to one aspect of this application, the phrase assessment of 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.

[0022] Specifically, according to one aspect of this application, the phrase "assess the first cell" means or includes: assessing the quality of the first cell.

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

[0024] Specifically, according to one aspect of this application, the phrase evaluation of the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, wherein 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 the 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 this application, the cell selection action includes: performing cell evaluation within a second time period when no suitable cell is found within the first time period; and selecting the suitable cell when a suitable cell is found within the first time period.

[0026] Specifically, according to one aspect of this application, the second value depends on the period during which the resources of the SSBs included in the first SSB group are requested.

[0027] Specifically, according to one aspect of this application, paging is listened to 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 this application, in response to the fulfillment of a first condition, 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 numerical time length.

[0029] Specifically, according to one aspect of this application, in response to the fulfillment of a second condition, 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 third numerical time length.

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

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

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

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

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

[0035] Specifically, according to one aspect of this application, the first node is an in-vehicle terminal.

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

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

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

[0039] A first receiver receives a first signaling instruction indicating the release of an RRC connection; in response to receiving the first signaling instruction, it enters an RRC idle state or an RRC inactive state, and performs cell selection; the cell selection includes evaluating a first cell within a target time period; the target time period depends on whether a first SSB group is request-based; the first SSB group belongs to the first cell;

[0040] The statement that the target duration depends on whether the SSB of the first cell is request-based includes the following meanings: when the SSB of the first cell is request-based, the target duration is a first value; when the SSB of the first cell is not request-based, the target duration is a second value.

[0041] As an example, compared with conventional solutions, this application has the following advantages:

[0042] This helps users in the RRC idle or inactive state to conduct cell assessments within a reasonable timeframe, enabling them to complete assessments of suitable cells and promptly stop unrestricted assessments of unsuitable cells.

[0043] It has low complexity and low development cost.

[0044] More flexible.

[0045] It helps save network power.

[0046] This ensures the continuity of communication and coverage, and reduces access latency.

[0047] Request-based SSB is not supported by legacy users. Supporting request-based SSB would be beneficial for obtaining services from cells that use it, thus greatly improving service transmission and reception and timely paging response. Attached Figure Description

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

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

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

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

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

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

[0054] Figure 6 A schematic diagram of cell assessment according to an embodiment of this application is shown;

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

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

[0057] Figure 9 A schematic diagram of a processing apparatus for a first node according to an embodiment of this application is illustrated;

[0058] Figure 10 A schematic diagram of a processing apparatus for a first node according to an embodiment of this application is illustrated. Implementation

[0059] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0060] Example 1

[0061] Example 1 illustrates a flowchart of receiving first signaling, entering the RRC idle state or the RRC inactive state, and performing cell selection according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown. (Attached) Figure 1 In the diagram, each box represents a step. It is particularly important to emphasize that the order of the boxes does not represent the chronological order of the steps they represent.

[0062] In Embodiment 1, the first node in this 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.

[0063] Wherein, 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 action of cell selection includes evaluating the first cell within a target time length; the target time length depends on whether the first SSB group is request-based; the first SSB group belongs to the first cell; the meaning of the sentence "the target time length depends on whether the SSB of the first cell is request-based" includes: when the SSB of the first cell is request-based, the target time length is a first value; when the SSB of the first cell is not request-based, the target time length is a second value.

[0064] As an example, the first node is UE (User Equipment).

[0065] As an example, the interpretation of terms in this application is based on the definitions in the 3GPP specification protocol TS38 series.

[0066] As an example, the first node is in RRC connected state when receiving the first signaling.

[0067] As an example, the method proposed in this application is unrelated to secondary link communication.

[0068] As an example, the method proposed in this application is applied to direct communication between a terminal and a network.

[0069] As an example, the serving cell refers to the cell where the UE camps. Performing a cell search includes the UE searching for a suitable cell within a 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 camping on a cell; that is, a camped cell is the serving cell for the UE. Camping on a cell in RRC idle or RRC inactive state has the following advantages: it allows 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 perform initial access on the control channel of the camped 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.

[0070] As an example, for a UE in RRC connected state without CA / DC (carrier aggregation / dual connectivity) configured, there is only one serving cell, including the primary cell. For a UE in RRC connected state with CA / DC configured, the serving cell is used to indicate the set of cells including the special cell (SpCell) and all cells from smaller cells. The primary cell is an MCG (Master Cell Group) cell, operating on the primary frequency. The UE performs the initial connection establishment process or initiates connection reconstruction on the primary cell. For dual connectivity 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 connectivity operation, the special cell refers to the PCell.

[0071] As an example, the frequency at which the SCell (Secondary Cell) operates is the frequency of the cell.

[0072] As an example, the individual content of an information element is called a field.

[0073] As an example, MR-DC (Multi-Radio Dual Connectivity) refers to dual connectivity between an E-UTRA and an NR node, or dual connectivity between two NR nodes.

[0074] As an example, in MR-DC, the radio access node that provides control plane connection to the core network is the master node, which can be a master eNB, a master ng-eNB, or a master gNB.

[0075] As an example, MCG refers to a group of serving cells associated with the master node in MR-DC, including SpCell, and optionally, one or more SCell.

[0076] As an example, PCell is the SpCell of MCG.

[0077] As an example, PSCell is the SpCell of SCG.

[0078] As an example, in MR-DC, no control plane connection to the core network is provided; instead, the radio access node that provides additional resources to the UE is a slave node. The slave node can be an en-gNB, an ng-eNB, or a gNB.

[0079] As an example, in MR-DC, the group of serving cells associated with a slave node is an SCG (secondary cell group), which includes SpCell and, optionally, one or more SCells.

[0080] As an example, after the first node enters the RRC idle state or the RRC inactive state, there is neither SCG nor MCG.

[0081] As an example, both MCG and SCG are configured in RRC connected state.

[0082] As an example, after the first node enters the RRC idle state or RRC inactive state, it selects a cell and, if a suitable cell is found, camps on that cell.

[0083] As an example, an RRC information block refers to an information element in an RRC message.

[0084] As an example, the SSB may be referred to as SS / PBCH, or SS block.

[0085] As an example, the synchronization signal PBCH block (SSB) includes master and slave synchronization signals, and the master and slave synchronization signals and the PBCH occupy fixed time and frequency resources.

[0086] As an example, the PBCH carries the MIB (master information block), which indicates key information required for accessing the system, including the system frame number.

[0087] As a sub-implementation of this embodiment, the MIB carries the information required to receive SIB1.

[0088] As a sub-implementation of this embodiment, the MIB determines a set of common control resources.

[0089] As a sub-implementation of this embodiment, MIB indicates the common subcarrier spacing.

[0090] As a sub-implementation of this embodiment, the MIB indicates whether the cell is barred.

[0091] As an example, the SS / PBCH block is used for measurement.

[0092] As an example, in the prior art, the acquisition of SIB1 and MIB is independent of requests.

[0093] As an example, those skilled in the art should understand that the concepts of RRC connected state, RRC idle state, and RRC inactive state are existing technologies.

[0094] As an example, the first signaling is RRC signaling.

[0095] As an example, the first signaling is higher-layer signaling.

[0096] As one embodiment, the first signaling includes NAS signaling.

[0097] As an example, the first signaling includes an RRRCRelease message.

[0098] As one example, the first signaling includes an RRCConnectionRelease message.

[0099] As an example, the first signaling includes the RRCReleaseNR message.

[0100] As an example, the first node is in RRC connected state before receiving the first signaling.

[0101] As an example, the first node was not in RRC connected state before receiving the first signaling.

[0102] As a sub-implementation of this embodiment, the first signaling is part of a random access procedure.

[0103] As a sub-implementation of this embodiment, the first signaling is used to respond to the RRC establishment request sent by the first node.

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

[0105] As an example, releasing an RRC connection includes leaving the RRC connection state.

[0106] As one example, releasing an RRC connection includes releasing radio resources.

[0107] As an example, releasing an RRC connection includes resetting the MAC.

[0108] As one example, releasing an RRC connection includes releasing the radio bearer.

[0109] As one example, releasing an RRC connection includes stopping at least one timer.

[0110] As an example, releasing an RRC connection includes: releasing the key.

[0111] As one example, releasing the RRC connection includes: releasing the measurement object.

[0112] As one example, releasing an RRC connection includes releasing dedicated random access resources.

[0113] As one example, releasing an RRC connection includes releasing the RLC bearer and / or RLC entity.

[0114] As an example, releasing an RRC connection includes releasing radio bearers other than SRB0 (signaling radio bearer 0).

[0115] As one embodiment, the first signaling indicates at least a first cell.

[0116] As an example, the first signaling indicates at least the first cell only when the first SSB group is based on a request.

[0117] As an example, when the first SSB group is not based on a request, the first cell is any candidate cell selected by cell selection.

[0118] As an example, when the first SSB group is not based on a request, the first cell is any cell discovered during cell search.

[0119] As an example, when the first SSB group is not based on a request, the system information broadcast by the cell where the first node resides indicates the first cell.

[0120] As one embodiment, the first signaling indicating at least the first cell includes: the first signaling indicating only the first cell.

[0121] As one embodiment, the first signaling indicating at least a first cell includes: the first signaling indicating a cell list, the cell list including the first cell.

[0122] As a sub-example of this embodiment, the cell list includes multiple cells.

[0123] In one embodiment, the first cell is the sender of the first signaling.

[0124] As an example, the first cell is the PCell of the first node when it receives the first signaling.

[0125] As an example, the first cell is a neighboring cell of the first node.

[0126] As an example, the first signaling indicates the first cell by indicating the global identity of the first cell.

[0127] As an example, the first signaling indicates the first cell by indicating the physical cell identity of the first cell.

[0128] As an example, the first signaling indicates the first cell by indicating the physical cell identity and / or frequency of the first cell.

[0129] As one embodiment, the first signaling includes the identity of the first cell.

[0130] As an example, upon receiving the first signaling, the first node releases the RRC connection.

[0131] As an example, the first signaling triggers the first node to leave the RRC connection state.

[0132] As an example, the first signaling triggers the first node to enter the RRC idle state.

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

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

[0135] As an example, the first signaling indicates whether the first node enters the RRC idle state or the RRC inactive state.

[0136] As an example, if the first signaling does not indicate that the first node enters the RRC inactive state, then the first node enters the RRC idle state.

[0137] As an example, when the first signaling includes the first field, the first node enters the RRC inactive state.

[0138] As an example, when the first signaling does not include the first field, the first node enters the RRC idle state.

[0139] As an example, the first domain is suspendConfig.

[0140] As an example, the execution of the first signaling includes entering the RRC idle state or entering the RRC inactive state.

[0141] As one example, the execution of the first signaling includes performing cell selection.

[0142] As an example, upon receiving the first signaling, the first node will necessarily enter the RRC idle state or the RRC inactive state.

[0143] As an example, upon receiving the first signaling, the first node will necessarily perform cell selection.

[0144] As an example, upon entering the RRC idle state, the first node will necessarily perform cell selection.

[0145] As an example, upon entering the RRC inactive state, the first node will necessarily perform cell selection.

[0146] As an example, through cell selection, the first node searches for a suitable cell in a selected PLMN (Public Land Mobile Network).

[0147] As an example, the network, such as the core network, will configure which PLMN the first node selects.

[0148] As an example, the SIM (Subscriber Identity Module) card of the first node is pre-configured to select which PLMN the first node selects.

[0149] As one example, the cell selection includes performing the required measurements.

[0150] As one 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 stratum to the non-access stratum.

[0151] As one example, the cell selection includes: searching for suitable cells.

[0152] As an example, the cell selection includes: if a cell is found to meet the cell selection criteria, then the user stays in that cell.

[0153] As an example, the measurement process included in the cell selection includes evaluating the first cell within the target time length.

[0154] As an example, the first node needs to complete the evaluation of the first cell within the target time period.

[0155] As an example, the target time length is for the first cell.

[0156] As an example, the first cell is assessed to be part of a measurement process or measurement requirement within the target time period.

[0157] As one example, evaluating the first cell includes evaluating the quality of the first cell.

[0158] As an example, evaluating the first cell includes evaluating whether the first cell is a suitable cell.

[0159] As one embodiment, evaluating the first cell includes measuring the first cell and determining whether the measurement results meet the cell selection criteria.

[0160] As one example, evaluating the first cell includes measuring the first cell and determining whether the measurement result is higher than a certain threshold.

[0161] As a sub-implementation of this embodiment, the certain threshold is configured by the network.

[0162] As a sub-example of this embodiment, if the measurement result of the first cell is higher than the certain threshold, then the first cell can be selected.

[0163] As an example, the first SSB group includes at least one SSB.

[0164] As an example, the first SSB group is associated with at least one SSB-index.

[0165] As an example, each SSB in the first SSB group is associated with an SSB-index.

[0166] As an example, an SSB-index is used to identify an SSB.

[0167] As an example, an SSB-index is an index of an SSB.

[0168] As an example, the first signaling indicates the first SSB group.

[0169] As an example, the first signaling indicates the first SSB group by indicating each SSB in the first SSB group.

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

[0171] As an example, the first SSB group consists of all the SSBs of the first cell.

[0172] As an example, the first SSB group includes only one SSB.

[0173] As an example, the first SSB group consists of the K SSBs with the best quality in the first cell.

[0174] As a sub-example of this embodiment, K is a positive integer.

[0175] As a sub-example of this embodiment, K is equal to 1.

[0176] As a sub-example of this embodiment, the K SSBs with the best quality are the K SSBs with the best measurement results.

[0177] As an example, the first SSB group consists of SSBs from the first cell that participate in evaluating the quality of the first cell.

[0178] As an example, the first SSB group consists of all CD-SSBs (cell defining SSBs) of the first cell.

[0179] As an example, CD-SSB is an SSB associated with SIB1.

[0180] As an example, the first node can obtain SIB1 from CD-SSB or obtain the search space of the PDCCH that needs to be monitored to receive SIB1.

[0181] As an example, the NCD-SSB is an SSB that does not indicate SIB1.

[0182] As an example, the first node cannot obtain SIB1 through NCD-SSB.

[0183] As an example, the first node cannot obtain the search space of the PDCCH (physical downlink control channel) that it needs to listen to for receiving SIB1 through NCD-SSB.

[0184] As an example, when the first cell includes a request-based SSB, the first SSB group consists of all request-based SSBs of the first cell.

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

[0186] As an example, the first SSB group consists of all the SSBs of the first cell indicated by the first signaling.

[0187] As an example, the first SSB group is composed of all the SSBs available for measurement in the first cell indicated by the first signaling.

[0188] As an example, if the first SSB group is request-based, then each SSB in the first SSB group is request-based.

[0189] As an example, if the first SSB group is based on a request, then the first SSB group will not be sent proactively.

[0190] As an example, if the first SSB group is based on demand, then the first node needs to send a request signal before the first cell will send an SSB.

[0191] As an example, if the first SSB group is based on demand, then the first node needs to send a request signal before the first cell will send the requested SSB.

[0192] As an example, request-based SSBs are important for saving network power.

[0193] As an example, if the first SSB is not based on a request, then the SSBs in the first SSB group are sent proactively by the network.

[0194] As an example, if the first SSB is not based on a request, then the SSBs in the first SSB group can be received without being requested.

[0195] As an example, the first SSB is not based on a request; to receive an SSB from the first SSB group, the first node does not need to send a request signal.

[0196] As an example, the first signaling indicates the first SSB group via SSB-ToMeasure.

[0197] As an example, the SSBs indicated by SSB-ToMeasure constitute the first SSB group.

[0198] As an example, the phrase "the first SSB group belongs to the first cell" means or includes: each SSB in the first SSB group belongs to the first cell.

[0199] As an example, the phrase "the first SSB group belongs to the first cell" means or includes: the first SSB group was sent by the first cell.

[0200] As an example, the phrase "the first SSB group belongs to the first cell" means or includes: the first signaling indicates the first cell, including the first SSB group indicating the first cell.

[0201] As an example, the phrase "the first SSB group belongs to the first cell" means or includes: the first SSB group consists of the SSBs of the first cell indicated by the first signaling.

[0202] As an example, the phrase "the first SSB group belongs to the first cell" means or includes: the first SSB group consists of the SSBs of the first cell indicated by the first signaling for measurement or cell selection.

[0203] As an example, the phrase "first SSB group is based on request" means or includes: the synchronization signal included by any SSB in the first SSB group is based on request.

[0204] As an example, the phrase "first SSB group is based on request" means or includes: the signals on the PBCH included by any SSB in the first SSB group are based on request.

[0205] As an example, the phrase "first SSB group is request-based" means or includes: the MIB included in any SSB in the first SSB group is request-based.

[0206] As an example, the phrase "first SSB group is based on request" means or includes: the MIB transmitted on the PBCH included by any SSB in the first SSB group is based on request.

[0207] As an example, the meaning of "based on request" is or includes: the network may not send a request if no request signal is received.

[0208] As an example, the meaning of a request is or includes: to receive, a request signal needs to be sent.

[0209] As an example, the unit of the target time length is milliseconds.

[0210] As an example, the first value and the second value are different.

[0211] As an example, the first value and the second value are configured separately.

[0212] As an example, the first value and the second value are configured by two separate signaling schemes.

[0213] As a sub-implementation of this embodiment, the advantages of the above method include: it is more flexible in implementation.

[0214] As an example, the first signaling indicates that the SSBs of the first cell are all request-based.

[0215] As an example, 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.

[0216] As an example, the first signaling configuration requests resources of the SSB of the first cell.

[0217] As an example, 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.

[0218] As an example, the first signaling indicates the first value.

[0219] As an example, the first value is fixed.

[0220] As one example, the first signaling indicates the second value.

[0221] As an example, the second value is greater than the first value.

[0222] As a sub-implementation of this embodiment, the advantages of the above method include: better evaluation of the quality of the SSB-based cell, which is especially important when requesting the SSB requires additional signaling delay, making it impossible to complete the evaluation of the first cell within the first numerical time length.

[0223] As an example, both the first value and the second value are positive integers.

[0224] As an example, the unit of the target time length is milliseconds.

[0225] As an example, the unit of the target time length is seconds.

[0226] As an example, the target time length is measured in units of DRX (Discontinuous Reception) periods.

[0227] As an example, neither the first nor the second value is explicitly indicated by the network.

[0228] As a sub-implementation of this embodiment, the advantages of the above method include: it is simpler and more explicit to implement.

[0229] As an example, it is essential to define the evaluation of a cell, such as the first cell, within a target time period. This ensures a good user experience, guarantees timely selection of a cell, and ensures timely reception of network paging.

[0230] As an example, an SSB refers to, corresponds to, or occupies a certain time-frequency resource.

[0231] As an example, the phrase "evaluate 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.

[0232] As a sub-example of this embodiment, measuring at least one SSB in the first SSB group includes measuring one SSB in the first SSB group.

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

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

[0235] As a sub-implementation of this embodiment, the first node determines which SSBs in the first SSB group to measure based on the implementation.

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

[0237] As a sub-example of this embodiment, the first node measures the first SSB discovered in the first SSB group. If the quality of the first discovered SSB does not meet the requirements, the other SSBs in the first SSB group are measured.

[0238] As a sub-example of this embodiment, the first node is measured sequentially according to the order of the SSBs in the first SSB group.

[0239] As a sub-example 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.

[0240] As an example, 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).

[0241] As an example, the phrase "the first measurement result measures the quality of the first cell" means that the first measurement result is the average of the measurement results for multiple SSBs in the first SSB group.

[0242] As an example, the phrase "the first measurement result measures the quality of the first cell" means that the first measurement result is the best among the measurement results for the SSBs in the first SSB group.

[0243] As an example, the phrase "the first measurement result measures the quality of the first cell" means that: the first measurement result describes the quality of the first cell.

[0244] As an example, the phrase "the first measurement result measures the quality of the first cell" means that: a large first measurement result indicates good quality of the first cell; conversely, a small first measurement result indicates poor quality of the first cell.

[0245] As an example, the phrase "the first measurement result measures the quality of the first cell" means that if the first measurement result meets the requirements, then the quality of the first cell is good; otherwise, the quality of the first cell is poor.

[0246] As a sub-implementation of this embodiment, the first signaling indicates the requirement.

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

[0248] As a sub-implementation of this embodiment, the requirements are fixed.

[0249] As a sub-example of this embodiment, the requirement is configured by the core network or operator.

[0250] As a sub-implementation of this embodiment, meeting the requirements means meeting a certain threshold.

[0251] As an example, the phrase "evaluate the first cell" means or includes: evaluating the quality of the first cell.

[0252] As a sub-example of this embodiment, the communication quality or wireless channel quality of the first cell is evaluated.

[0253] As a sub-implementation of this embodiment, if the quality of the first cell meets the requirements, then the user can stay in the first cell.

[0254] As a sub-example of this embodiment, if the quality of the first cell does not meet the requirements, then it is neither possible nor best not to camp on the first cell.

[0255] As a sub-implementation of this embodiment, if the quality of the first cell meets the requirements, then the first cell is a suitable cell.

[0256] As a sub-implementation of this embodiment, the first signaling indicates the requirement.

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

[0258] As a sub-implementation of this embodiment, the requirements are fixed.

[0259] As a sub-example of this embodiment, the requirement is configured by the core network or operator.

[0260] As a sub-implementation of this embodiment, meeting the requirements means meeting a certain threshold.

[0261] As an example, the phrase "evaluate the first cell" means or includes: evaluating whether the first cell is a suitable cell.

[0262] As an example, those skilled in the art should understand that "suitable cell" is a specific proper noun in the art.

[0263] As an example, a suitable cell is a cell in which the UE can camp. For NR cells, certain conditions need to be met, and these conditions are referred to in section 4.5 of 3GPP TS 38.304.

[0264] As an example, the phrase evaluation of the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, wherein whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is requested; when the first SSB group is requested, the Srxlev of the first cell includes the first offset; when the first SSB group is not requested, the Srxlev of the first cell does not include the first offset.

[0265] As a sub-example 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.

[0266] As a sub-implementation of this embodiment, the first offset is non-zero.

[0267] As a sub-implementation of this embodiment, the first offset is a negative number.

[0268] As a sub-example of this embodiment, the Srxlev of the first cell includes the first offset, making the first cell less likely to be selected.

[0269] As a sub-implementation of this embodiment, the first signaling indicates the first offset.

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

[0271] As a sub-implementation of this embodiment, the first offset is fixed.

[0272] As an example, the first node performing cell reselection includes: determining the Srxlev (cell selection reception level value) of the first cell, wherein 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 the first offset; when the first SSB group is not request-based, the Srxlev of the first cell does not include the first offset.

[0273] As a sub-example 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.

[0274] As a sub-implementation of this embodiment, the first offset is non-zero.

[0275] As a sub-implementation of this embodiment, the first offset is a negative number.

[0276] As a sub-example of this embodiment, the Srxlev of the first cell includes the first offset, making the first cell less likely to be selected.

[0277] As a sub-implementation of this embodiment, the first signaling indicates the first offset.

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

[0279] As a sub-implementation of this embodiment, the first offset is fixed.

[0280] As an example, the cell selection action includes: when no suitable cell is found within the first numerical time period, performing cell evaluation within the second numerical time period; when a suitable cell is found within the first numerical time period, selecting the suitable cell.

[0281] As a sub-example of this embodiment, when the first node performs cell evaluation, it first assumes that none of the SSBs in the first SSB group are request-based.

[0282] As a sub-implementation of this embodiment, the first node first performs cell assessment according to the fact that none of the SSBs in the first SSB group are based on requests.

[0283] As a sub-example of this embodiment, when the first node fails to find a suitable cell within the time length of the first value, the first node considers the SSB of the first SSB group to be request-based.

[0284] As a sub-example of this embodiment, when the first node fails to find a suitable cell within the time length of the first value, the first node requests an SSB.

[0285] As a sub-implementation of this embodiment, the meaning of the sentence "When no suitable cell is found within the first numerical time length, cell assessment is performed within the second numerical time length" includes: when no suitable cell is found within the first numerical time length, cell assessment is performed again within the second numerical time length.

[0286] As a sub-example of this embodiment, the meaning of the sentence "When no suitable cell is found within the time length of the first value, cell assessment is performed within the time length of the second value" includes: when no suitable cell is found within the time length of the first value, the cell assessment time is extended from the first value to the second value.

[0287] As a sub-implementation of this embodiment, the advantages of the above method include: the first node adaptively determines the time for performing cell assessment, which is more flexible.

[0288] As an example, cell assessment is the evaluation of a cell.

[0289] As an example, cell assessment is or includes cell search.

[0290] As an example, selecting the suitable cell includes residing on the selected cell.

[0291] Example 2

[0292] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in the attached diagram. Figure 2 As shown.

[0293] Appendix Figure 2This diagram illustrates the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. 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 term. 5GS / EPS 200 may include one or more UE (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. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, 5GS / EPS provides packet-switched services; however, those skilled in the art will readily understand 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 termination to UE 201. gNB 203 can connect to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP (Transmitter Receiver Node), or some other suitable term. gNB 203 provides UE 201 with an access point to 5GC / EPC 210. Examples of UE201 include cellular phones, smartphones, 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 IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term.gNB203 connects 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 / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. MME / AMF / SMF 211 is the control node handling signaling between UE201 and 5GC / EPC210. ​​Generally, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF 212, which is itself connected to P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 connects to Internet service 230. Internet service 230 includes carrier-compliant Internet protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0294] As an example, the first node in this application is UE201.

[0295] As an example, the base station of the second node in this application is gNB203.

[0296] As an example, the radio link from UE201 to NR node B is an uplink.

[0297] As an example, the radio link from NR node B to UE201 is a downlink.

[0298] As an example, the UE201 supports relay transmission.

[0299] As an example, the UE201 includes a mobile phone.

[0300] As an example, the UE201 is a vehicle including a car.

[0301] As an example, the gNB203 is a macrocell base station.

[0302] As an example, the gNB203 is a microcell base station.

[0303] As an example, the gNB203 is a PicoCell base station.

[0304] As one example, the gNB203 is a flight platform device.

[0305] As an example, the gNB203 is a satellite device.

[0306] Example 3

[0307] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first node (a satellite or aircraft in the gNB or NTN) and the second node (a satellite or aircraft in the gNB, UE, or NTN), or between two UEs, is illustrated using 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. L1 layer will be referred to as PHY301 in this document. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first and second nodes and between the two UEs via PHY301. L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets and supports cross-cell mobility between second nodes to the first node. RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between first nodes. MAC sublayer 302 is also responsible for HARQ operations. RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second and first nodes. PC5-S (PC5 Signaling Protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first and second nodes in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes the SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and Data Radio Bearers (DRBs) to support service diversity. SRBs can be seen as services or interfaces provided by the PDCP layer to higher layers, such as the RRC layer. In NR systems, SRBs include SRB1, SRB2, and SRB3, and SRB4 is also included when secondary link communication is involved, each used to transmit different types of control signaling. SRBs are bearers between the UE and the access network, used to transmit control signaling, including RRC signaling, between the UE and the access network. SRB1 is particularly important for the UE; after each UE establishes an RRC connection, there will be an SRB1 used to transmit RRC signaling. Most signaling is transmitted through SRB1. If SRB1 is interrupted or unavailable, the UE must re-establish RRC. SRB2 is generally only used to transmit NAS signaling or security-related signaling. UEs may not configure SRB3. Except for emergency services, the UE must establish an RRC connection with the network for subsequent communication. Although not illustrated, the first node may have several upper layers above L2 layer 355. It also includes a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., remote UE, server, etc.).

[0308] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node in this application.

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

[0310] As an example, the first signal in this application is generated by PHY301, or MAC302, or RRC306.

[0311] As an example, the first signaling in this application is generated in RRC306.

[0312] As an example, the first information in this application is generated in RRC306.

[0313] As an example, the SIB1 in this application is generated in RRC306.

[0314] Example 4

[0315] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of this application, as shown in the attached diagram. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in the access network.

[0316] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, and optionally may also include a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0317] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, and optionally may also include a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0318] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 (Layer-2) layer functionality. 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 retransmitting 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). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0319] 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 radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations 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 receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive 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 over 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 Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0320] 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 functions 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, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0321] 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 receiving 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 radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper-layer data packets from the UE 450. Upper-layer packets from the controller / processor 475 can be provided to the core network.

[0322] As one embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 at least: receives a first signaling, the first signaling indicating the release of an RRC connection; in response to receiving the first signaling, enters an RRC idle state or an RRC inactive state, and performs cell selection accompanying the action of entering the RRC idle state or entering the RRC inactive state; the action of performing cell selection includes evaluating a first cell within a target time length; the target time length depends on whether a first SSB group is request-based; the first SSB group belongs to the first cell; wherein, the meaning of the sentence "the target time length depends on whether the SSB of the first cell is request-based" includes: when the SSB of the first cell is request-based, the target time length is a first value; when the SSB of the first cell is not request-based, the target time length is a second value.

[0323] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, which, when executed by at least one processor, generates actions including: receiving a first signaling, the first signaling indicating the release of an RRC connection; in response to receiving the first signaling, entering an RRC idle state or an RRC inactive state, and accompanying the action of entering the RRC idle state or the RRC inactive state, performing cell selection; the action of performing cell selection includes evaluating a first cell within a target time length; the target time length depends on whether a first SSB group is request-based; the first SSB group belongs to the first cell; wherein, the meaning of the sentence "the target time length depends on whether the SSB of the first cell is request-based" includes: when the SSB of the first cell is request-based, the target time length is a first value; when the SSB of the first cell is not request-based, the target time length is a second value.

[0324] As an example, the first communication device 450 corresponds to the first node in this application.

[0325] As an example, the second communication device 410 corresponds to the second node in this application.

[0326] As an example, the first communication device 450 is a UE.

[0327] As an example, the first communication device 450 is a vehicle-mounted terminal.

[0328] As one embodiment, the second communication device 450 is a relay.

[0329] As one embodiment, the second communication device 410 is a satellite.

[0330] As one embodiment, the second communication device 410 is an aircraft.

[0331] As one embodiment, the second communication device 410 is a base station.

[0332] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the first signaling.

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

[0334] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used to receive the SIB1 in this application.

[0335] As one embodiment, a transmitter 454 (including an antenna 452), a transmitter processor 468, and a controller / processor 459 are used in this application to transmit the first signal.

[0336] Example 5

[0337] Example 5 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. (Attached) Figure 5 In this example, U01 corresponds to the first node of this application. It should be noted that the order in this example does not limit the signal transmission order and the implementation order in this application, and the steps in F51 are optional.

[0338] for First node U01 In step S5101, the first signaling is received; in step S5102, the RRC idle state or RRC inactive state is entered; in step S5103, cell selection is performed; in step S5104, paging is listened for; in step S5105, the first signal is sent; in step S5106, the SSB is received; and in step S5107, the measurement of all neighboring cells is started.

[0339] for Second node U02 In step S5201, a first signaling is sent; in step S5202, a first signal is received; and in step S5203, an SSB is sent.

[0340] In Embodiment 5, the first signaling indicates the release of the RRC connection; in response to receiving the first signaling, the first node U01 executes step S5102, and along with step S5102, the first node executes step S5103; the action of cell selection includes evaluating the first cell within a target time length; 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 the sentence "the target time length depends on whether the SSB of the first cell is request-based" includes: when the SSB of the first cell is request-based, the target time length is a first value; when the SSB of the first cell is not request-based, the target time length is a second value.

[0341] As an example, the second node U02 is the SpCell of the first node U01.

[0342] As an example, the second node U02 is the MCG of the first node U01.

[0343] In one embodiment, the second node U02 is the first cell.

[0344] As one embodiment, the second node U02 is the PCell of the first node U01 or the base station corresponding to the PCell.

[0345] As an example, the communication interface between the first node U01 and the second node U02 is the Uu interface.

[0346] As an example, step S5102 depends on step S5101.

[0347] As an example, step S5103 depends on step S5101.

[0348] As an example, step S5102 follows step S5101.

[0349] As an example, steps S5103 and S5102 do not need to have a definite timing relationship; for example, they can occur simultaneously.

[0350] As an example, step S5104 follows step S5103.

[0351] As an example, step S5105 follows step S5103.

[0352] As an example, step S5106 follows step S5105.

[0353] As an example, step S5105 triggers step S5106.

[0354] As an example, step S5107 follows step S5203.

[0355] As an example, the second node U02 belongs to the NR network.

[0356] As an example, an RRC connection was established between the networks to which the first node U01 and the second node U02 belong.

[0357] As a sub-implementation of this embodiment, the RRC connection is released after receiving the first signaling.

[0358] As an example, regardless of 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.

[0359] As an example, regardless of whether the first node enters the RRC idle state or the RRC inactive state, the first signaling includes: measurement configuration.

[0360] As a sub-example of this embodiment, the measurement configuration is for network optimization.

[0361] As an example, the first signaling includes a first field, which is suspendConfig. The first signaling includes at least one of the following: the first field indicates that the first node U01 enters the RRC inactive state; the first field indicates the I-RNTI of the first node U01; the RAN paging cycle; the value of the t380 timer; RAN notification area information; and SDT configuration.

[0362] As a sub-example of this embodiment, the I-RNTI identifies the suspended UE context of the UE in the RRC inactive state.

[0363] As a sub-example 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 RAN area update.

[0364] As a sub-implementation 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.

[0365] As a sub-example of this embodiment, the SDT (small data transmission) configuration includes configuring resources for sending SDT data.

[0366] As a sub-implementation of this embodiment, the first signaling indicates the first cell.

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

[0368] As a sub-implementation of this embodiment, the first signaling indicates that the first SSB group is based on a request; the first section U01 evaluates the first cell within the target time length; and the target time length is a second value.

[0369] As a sub-example of this embodiment, after evaluation, the first cell was found to be a suitable cell, and the first node U01 selected the first cell.

[0370] As an example, the first signaling includes a first field, which is suspendConfig. The first signaling includes at least one of the following: the first field indicates that the first node U01 enters the RRC inactive state; the first field indicates the I-RNTI of the first node U01; the RAN paging cycle; the value of the t380 timer; RAN notification area information; and SDT configuration.

[0371] As a sub-example of this embodiment, the I-RNTI identifies the suspended UE context of the UE in the RRC inactive state.

[0372] As a sub-example 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 RAN area update.

[0373] As a sub-implementation 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.

[0374] As a sub-example of this embodiment, the SDT (small data transmission) configuration includes configuring resources for sending SDT data.

[0375] As a sub-example of this embodiment, the first cell is any candidate cell in the cell selection.

[0376] As a sub-implementation of this embodiment, the first SSB group consists of all the SSBs of the first cell.

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

[0378] As a sub-implementation of this embodiment, the first signaling indicates that the first SSB group is not based on a request; the first section U01 evaluates the first cell within the target time length; and the target time length is a first value.

[0379] As a sub-example of this embodiment, after evaluation, the first cell was found to be a suitable cell, and the first node U01 selected the first cell.

[0380] As an example, if the first signaling does not include the first domain, and the first domain is suspendConfig, then the first node U01 enters the RRC idle state.

[0381] As a sub-implementation of this embodiment, the first signaling indicates the first cell.

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

[0383] As a sub-implementation of this embodiment, the first signaling indicates that the first SSB group is based on a request; the first section U01 evaluates the first cell within the target time length; and the target time length is a second value.

[0384] As a sub-example of this embodiment, after evaluation, the first cell was found to be a suitable cell, and the first node U01 selected the first cell.

[0385] As an example, if the first signaling does not include the first domain, and the first domain is suspendConfig, then the first node U01 enters the RRC idle state.

[0386] As a sub-example of this embodiment, the first cell is any candidate cell in the cell selection.

[0387] As a sub-implementation of this embodiment, the first SSB group consists of all the SSBs of the first cell.

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

[0389] As a sub-implementation of this embodiment, the first signaling indicates that the first SSB group is not based on a request; the first section U01 evaluates the first cell within the target time length; and the target time length is a first value.

[0390] As a sub-example of this embodiment, after evaluation, the first cell was found to be a suitable cell, and the first node U01 selected the first cell.

[0391] As an example, the first node U01 listens for paging on at least one time-frequency resource, the at least one time-frequency resource depending on whether the first SSB group is request-based.

[0392] As a sub-implementation of this embodiment, when the first SSB group is not based on a request, the at least one time-frequency resource includes K time-frequency resources within a time length of each first value, where K is greater than 0; when the first SSB group is based on a request, the at least one time-frequency resource includes K time-frequency resources within a time length of each second value, where K is greater than 0.

[0393] As a sub-implementation of this embodiment, when the first SSB group is requested, the at least one time-frequency resource includes fewer time-frequency resources compared to when the first SSB group is not requested.

[0394] As a sub-implementation of this embodiment, when the first SSB group is requested, the at least one time-frequency resource is more concentrated in the time domain compared to when the first SSB group is not requested.

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

[0396] As a sub-implementation of this embodiment, the advantages of the above method include that it can save more network power and also helps to save UE power.

[0397] As an example, the first node U01, in response to the first condition being met, executes step S5105.

[0398] As a sub-implementation of this embodiment, the first signal requests the SSB of the first cell.

[0399] As a sub-implementation of this embodiment, the first condition includes failure to receive the SSB of the first cell within a first numerical time length.

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

[0401] As a sub-implementation of this embodiment, the first condition includes failing to receive or detect an SSB in the first SSB group within a time length of the first numerical value.

[0402] As a sub-implementation of this embodiment, the first SSB group is request-based.

[0403] As a sub-implementation of this embodiment, the first signal includes a physical layer signal.

[0404] As a sub-implementation of this embodiment, the first signal is or includes a signal transmitted on PRACH (physical random access channel).

[0405] As a sub-implementation of this embodiment, the first signal is or includes a Preamble signal.

[0406] As a sub-implementation of this embodiment, the first signal is or includes msg3 of a 4-step random access procedure.

[0407] As a sub-implementation of this embodiment, the first signal is or includes a MSGA with a two-step random access procedure.

[0408] As an example, the first node U01, in response to the second condition being met, executes step S5105.

[0409] As a sub-implementation of this embodiment, the first signal requests the SSB of the first cell.

[0410] As a sub-example of this embodiment, the first condition includes the second condition including the failure to find a suitable cell within a third numerical time length.

[0411] As a sub-example of this embodiment, the first condition includes the second condition including the failure to complete the evaluation of the first cell within the third numerical time length.

[0412] As a sub-implementation of this embodiment, the first SSB group is request-based.

[0413] As a sub-implementation of this embodiment, the first signal includes a physical layer signal.

[0414] As a sub-implementation of this embodiment, the first signal is or includes a signal transmitted on PRACH (physical random access channel).

[0415] As a sub-implementation of this embodiment, the first signal is or includes a Preamble signal.

[0416] As a sub-implementation of this embodiment, the first signal is or includes msg3 of a 4-step random access procedure.

[0417] As a sub-implementation of this embodiment, the first signal is or includes a MSGA with a two-step random access procedure.

[0418] As a sub-implementation of this embodiment, the first signaling indicates the third value.

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

[0420] As a sub-example of this embodiment, the third value is fixed.

[0421] As a sub-implementation of this embodiment, the third value depends on the first value or the third value depends on the second value.

[0422] As an example, the first node U01 receives the SSB of the first cell in step S5106.

[0423] As a sub-example of this embodiment, in this embodiment, the second node U02 is the first cell. However, this application is not limited to this. The first cell can 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.

[0424] As an example, step S5107 is executed after the first node U01 completes cell selection.

[0425] As a sub-example of this embodiment, the first node U01 selects the first cell in cell selection.

[0426] As an example, when the first cell does not meet the S criterion within a first time period, the first node U01 initiates a measurement of all neighboring cells.

[0427] As a sub-implementation of this embodiment, the first time length depends on whether the first SSB group is based on a request.

[0428] As an example, the system information broadcast by the second node U02 indicates all the neighboring cells.

[0429] As an example, the system information broadcast by the cell where the first node U01 resides indicates all the neighboring cells.

[0430] As an example, the system information stored in the first node U01 indicates all the neighboring cells.

[0431] As an example, measurements of all neighboring cells are initiated to identify suitable cells as quickly as possible.

[0432] As an example, failure to meet the S criterion indicates that the current cell is no longer a suitable cell.

[0433] As an example, the first time length is longer when the first SSB group is request-based, compared to when the first SSB group is not request-based.

[0434] As an example, when the first SSB group is not based on a request, the first time length is a positive integer multiple of the 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.

[0435] As an example, the first signaling is not a system information block.

[0436] As an example, the phrase "the first node selected the first cell" means that the first cell is the cell where the first node is stationed.

[0437] As an example, the phrase "the first node selected the first cell" means that the first cell is the serving cell of the first node.

[0438] Example 6

[0439] Example 6 illustrates a schematic diagram of cell assessment according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown.

[0440] As an example, Appendix Figure 6 The S-criteria for cell selection is shown, when attached Figure 6 When the formula in the formula is satisfied, the S criterion for cell selection is satisfied.

[0441] As an example, Appendix Figure 6 Srxlev in the value is the RX level selected for the cell, and the unit is dB.

[0442] As an example, Appendix Figure 6Squal in this context is the cell selection quality value, measured in dB.

[0443] As an example, Appendix Figure 6 Qoffset in temp It is a temporary offset applied to a cell, and the unit is dB.

[0444] As a sub-implementation of this embodiment, the Qoffset temp It's indicated by the network.

[0445] As a sub-implementation of this embodiment, when consecutive connection establishment failures occur, the Qoffset... temp It is applied.

[0446] As an example, Appendix Figure 6 Q in rxlevmeas It is the measured cell RX level value, i.e., RSRP.

[0447] As an example, Appendix Figure 6 Q in qualmeas It is the measured cell quality value, i.e., RSRQ.

[0448] As an example, Appendix Figure 6 Q in rxlevmin It is the minimum required RX level value.

[0449] As a sub-implementation of this embodiment, Q rxlevmin It is a network indication, such as through a system information block.

[0450] As a sub-implementation of this embodiment, Q rxlevmin It is indicated by the first signaling.

[0451] As an example, Appendix Figure 6 Q in qualmin It is the minimum required quality level, measured in dB.

[0452] As a sub-implementation of this embodiment, Q qualmin It is a network indication, such as through a system information block.

[0453] As a sub-implementation of this embodiment, Q qualmin It is indicated by the first signaling.

[0454] As an example, Appendix Figure 6 Q in rxlevminoffset It is applied to Q rxlevmin The offset.

[0455] As an example, Appendix Figure 6 Q inqualminoffset It is applied to Q qualmin The offset.

[0456] As an example, Appendix Figure 6 P in compensation This applies to FR1; that is, when applying to FR2, P compensation It is 0.

[0457] As an example, Appendix Figure 6 P in compensation When indicated by SIB1, SIB2, and SIB4, the condition max(P) is satisfied. 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); where max() is the maximum value operation and min() is the minimum value operation; P EMAX1 ,P EMAX2 This is the maximum transmit power a UE can use for uplink transmission within a cell, defined by 3GPP TS 38.101-1; P PowerClass It is the UE's maximum radio frequency transmit power based on the UE's power level, measured in dBm (p). PowerClass For a detailed definition, please refer to 3GPP TS 38.101-1.

[0458] As an example, P compensation It is used only when the first node supports additional maximum transmit power.

[0459] As an example, Q rxlevminoffset and Q qualminoffset It is used only in cell evaluation during cell selection when periodically searching for higher-priority PLMNs.

[0460] As an example, a suitable cell must meet the S criterion.

[0461] As an example, when the first SSB group is based on a request, the Srxlev also includes a first offset, which is non-zero.

[0462] As a sub-implementation of this embodiment, when the first SSB group is not based on a request, the Srxlev includes a first offset, which is equal to 0.

[0463] As an example, when the first SSB group is request-based, the Squal further includes a first offset, which is non-zero.

[0464] As a sub-implementation of this embodiment, when the first SSB group is not based on a request, the Squal includes a first offset, which is equal to 0.

[0465] As an example, the advantages of the above method include: it can help the UE prioritize the selection of cells that can receive SSB without requesting them during cell selection, which helps reduce cell selection latency and avoids missing paging.

[0466] Example 7

[0467] Example 7 illustrates a schematic diagram of a first cycle according to an embodiment of this application, as shown in the attached diagram. Figure 7 As shown.

[0468] As an example, Appendix Figure 7 Each small square in the diagram represents a resource used to request the SSB. The resource used to request the SSB is periodic, and the period is the first period.

[0469] As a sub-implementation of this embodiment, the first signaling indicates the first cycle.

[0470] As a sub-implementation of this embodiment, the first signaling indicates a request for resources from the SSB.

[0471] As a sub-implementation of this embodiment, the first signaling respectively indicates the request for resources of each SSB in the first SSB group.

[0472] As a sub-implementation of this embodiment, it is used to request that each SSB in the first SSB group have the same resources.

[0473] As a sub-example of this embodiment, the requested SSB is an SSB request in the first SSB group.

[0474] As a sub-implementation of this embodiment, the SSB is an SSB in the first SSB group.

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

[0476] As a sub-example of this embodiment, the first information indicates a request for resources from the SSB.

[0477] As a sub-example of this embodiment, the first node is only allowed to send a signal request for an SSB on the resources configured for requesting an SSB.

[0478] As an example, the period for requesting resources from the SSBs included in the first SSB group is the first period.

[0479] As a sub-implementation of this embodiment, it is requested that the SSBs included in the first SSB group be any SSB in the first SSB group.

[0480] As one example, the second value depends on the first period.

[0481] As an example, the second value is equal to the first period.

[0482] As an example, the second value is equal to the larger of the first period and the second time length of the first node.

[0483] As an example, the second value is not less than N1 times the first period, where N1 is a positive integer.

[0484] As a sub-example of this embodiment, N1 depends on whether the operating frequency is FR1 or FR2. When the operating frequency is FR1, N1 is equal to 1, and when the operating frequency is FR2, N1 is not equal to 1.

[0485] As an example, the second value is not less than N1 times the larger of the first period and the second time length of the first node, where N1 is a positive integer.

[0486] As a sub-example of this embodiment, N1 depends on whether the operating frequency is FR1 or FR2. When the operating frequency is FR1, N1 is equal to 1, and when the operating frequency is FR2, N1 is not equal to 1.

[0487] As an example, the second value is not less than M2 times the first period, where M2 is a positive integer.

[0488] As a sub-implementation of this embodiment, M2 is equal to 2.

[0489] As a sub-example of this embodiment, M2 equals 4.

[0490] As an example, the second value is not less than M2 times the larger of the first period and the second time length of the first node, where M2 is a positive integer.

[0491] As a sub-implementation of this embodiment, M2 is equal to 2.

[0492] As a sub-example of this embodiment, M2 equals 4.

[0493] As an example, the second time length is the DRX period of the first node.

[0494] As one example, the second time length is the value of the first timer of the first node.

[0495] As one embodiment, the second time length is the greater of the value of the first timer of the first node and the DRX period of the first node.

[0496] As an example, the advantages of the above method include: averaging more than one measurement value helps to obtain more accurate results. Therefore, the number of measurement results obtained by estimating the number of SSBs that can be received based on the period of the requested resources is conducive to obtaining a sufficient number of measurement results, making cell assessment more accurate, and at the same time, it will not take too long to assess a cell, which will affect the assessment of other cells.

[0497] Example 8

[0498] Example 8 illustrates a schematic diagram of a first timer according to an embodiment of this application.

[0499] As an example, during the operation of the first timer, the first node is not allowed to send a signal requesting an SSB.

[0500] As one example, the serving cell of the first node indicates the value of the first timer.

[0501] As one embodiment, the first signaling indicates the value of the first timer.

[0502] As one example, the first information indicates the value of the first timer.

[0503] As an example, the value of the first timer is greater than 0.

[0504] As an example, the first timer is started periodically.

[0505] As an example, the first timer is stopped when entering the RRC connection state.

[0506] As an example, the first timer is started when entering the RRC idle state.

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

[0508] As an example, the first node is only allowed to send a request SSB signal when the first timer is not running.

[0509] As an example, the first timer is not T350.

[0510] As one example, the first timer is for a single community.

[0511] As an example, the first timer is for all cells using request-based SSBs.

[0512] As an example, the advantages of the above method include: it can limit the first node's request for SSB, which is beneficial for saving network power.

[0513] Example 9

[0514] Example 9 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of this application; as shown in the appendix. Figure 9 As shown. In the appendix Figure 9 In the first node, the processing device 900 includes a first receiver 901 and a first transmitter 902. In embodiment 9,

[0515] A first receiver 901 receives a first signaling instruction indicating the release of an RRC connection; in response to receiving the first signaling instruction, it enters an RRC idle state or an RRC inactive state, and performs cell selection; the cell selection includes evaluating a first cell within a target time period; the target time period depends on whether a first SSB group is request-based; the first SSB group belongs to the first cell;

[0516] The statement that the target duration depends on whether the SSB of the first cell is request-based includes the following meanings: when the SSB of the first cell is request-based, the target duration is a first value; when the SSB of the first cell is not request-based, the target duration is a second value.

[0517] As an example, the phrase "evaluate 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.

[0518] As an example, the phrase evaluation of the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, wherein whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is requested; when the first SSB group is requested, the Srxlev of the first cell includes the first offset; when the first SSB group is not requested, the Srxlev of the first cell does not include the first offset.

[0519] As an example, the cell selection action includes: when no suitable cell is found within the first numerical time period, performing cell evaluation within the second numerical time period; when a suitable cell is found within the first numerical time period, selecting the suitable cell.

[0520] As one example, the second value depends on the period during which resources of the SSBs included in the first SSB group are requested.

[0521] As one embodiment, a first receiver 901 listens for 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.

[0522] As one embodiment, a first transmitter 902, in response to a first condition being met, sends a first signal requesting the SSB of the first cell; a 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 numerical time length.

[0523] As one embodiment, a first transmitter 902, in response to the fulfillment of a second condition, sends a first signal requesting the SSB of the first cell; a first receiver 901 receives the SSB of the first cell; wherein the second condition includes failure to find a suitable cell within a third numerical time length.

[0524] As one embodiment, a first receiver 901, in response to the first cell not meeting the S criterion within a first time length, initiates measurements of all neighboring cells; the first time length depends on whether the first SSB group is based on a request; wherein the first node selects the first cell.

[0525] As an example, the first node is a user equipment (UE).

[0526] As an example, the first node is an NTN-enabled terminal.

[0527] As an example, the first node is an aircraft or a ship.

[0528] As an example, the first node is a mobile phone or vehicle terminal.

[0529] As one example, the first node is a relay UE and / or a U2N remote UE.

[0530] As an example, the first node is an Internet of Things (IoT) terminal or an industrial IoT terminal.

[0531] As an example, the first node is a device that supports low-latency, high-reliability transmission.

[0532] As one embodiment, the first receiver 901 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, or data source 467.

[0533] As one embodiment, the first transmitter 902 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, or data source 467.

[0534] Example 10

[0535] Example 10 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of this application; as shown in the appendix. Figure 10 As shown. In the appendix Figure 10 In the first node, the processing device 1000 includes a first receiver 1001 and a first transmitter 1002. In embodiment 10,

[0536] A first receiver 1001 receives first information, which is broadcast; the first information indicates at least a first cell; performs cell reselection; the cell reselection includes evaluating the first cell within a target time period; the target time period depends on whether a first SSB group is based on a request; the first SSB group belongs to the first cell;

[0537] The statement that the target duration depends on whether the SSB of the first cell is request-based includes the following meanings: when the SSB of the first cell is request-based, the target duration is a first value; when the SSB of the first cell is not request-based, the target duration is a second value.

[0538] As one embodiment, the first information includes a system information block.

[0539] As an example, the first information includes one of SIB1, SIB2, SIB3, SIB4, and SIB5.

[0540] As an example, the list of neighboring cells included in the first information includes the first cell.

[0541] As an example, the first cell is a neighboring cell.

[0542] As an example, the first information is not an SSB.

[0543] As an example, the problem that the above method aims to solve is: how to determine the target evaluation time during cell reselection.

[0544] As an example, the advantages of the above method are: it can better support cells that use request-based SSBs during cell reselection; it can complete cell evaluation without spending too much time on the evaluation of a single cell.

[0545] As an example, the phrase "evaluate 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.

[0546] As an example, the phrase evaluation of the first cell means or includes: determining the Srxlev (cell selection reception level value) of the first cell, wherein whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is requested; when the first SSB group is requested, the Srxlev of the first cell includes the first offset; when the first SSB group is not requested, the Srxlev of the first cell does not include the first offset.

[0547] As an example, the cell reselection behavior includes: when no suitable cell is found within the first numerical time length, performing cell evaluation within the second numerical time length; when a suitable cell is found within the first numerical time length, selecting the suitable cell.

[0548] As one example, the second value depends on the period during which resources of the SSBs included in the first SSB group are requested.

[0549] As one embodiment, a first receiver 1001 listens for 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.

[0550] As one embodiment, a first transmitter 1002, in response to a first condition being met, sends a first signal requesting the SSB of the first cell; a 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 numerical time length.

[0551] As one embodiment, a first transmitter 1002, in response to the fulfillment of a second condition, sends a first signal requesting the SSB of the first cell; a first receiver 1001 receives the SSB of the first cell; wherein the second condition includes failure to find a suitable cell within a third numerical time length.

[0552] As an example, the first receiver 1001, in response to the first cell not meeting the S criterion within a first time length, initiates measurements of all neighboring cells; the first time length depends on whether the first SSB group is based on a request; wherein the first node selects the first cell.

[0553] As an example, the first node is a user equipment (UE).

[0554] As an example, the first node is an NTN-enabled terminal.

[0555] As an example, the first node is an aircraft or a ship.

[0556] As an example, the first node is a mobile phone or vehicle terminal.

[0557] As one example, the first node is a relay UE and / or a U2N remote UE.

[0558] As an example, the first node is an Internet of Things (IoT) terminal or an industrial IoT terminal.

[0559] As an example, the first node is a device that supports low-latency, high-reliability transmission.

[0560] As one embodiment, the first receiver 1001 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, or data source 467.

[0561] As one embodiment, the first transmitter 1002 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, or data source 467.

[0562] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication equipment, wireless sensors, internet cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablets, satellite communication equipment, ship communication equipment, NTN user equipment, and other wireless communication equipment. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B), TRP (Transmitter Receiver Point), NTN base stations, satellite equipment, flight platform equipment, and other wireless communication equipment.

[0563] This invention may be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A first node for wireless communication, wherein, include: A first receiver receives a first signaling instruction, wherein the first signaling instruction indicates the release of a Radio Resource Control (RRC) connection; The first processor, in response to receiving the first signaling, enters either the RRC idle state or the RRC inactive state, and performs cell selection in conjunction with entering the RRC idle state or the RRC inactive state; Based on the first signaling, determine whether the first synchronization signal block (SSB) group is based on a request; The target duration for evaluating the first cell is determined based on whether the first SSB group is based on a request. The specific method is as follows: In response to determining that the first SSB group is based on a request, the target duration is determined to be equal to the second value; In response to determining that the first SSB group is not based on a request, the target duration is determined to be equal to a first value; and The first cell is evaluated within the target duration; Wherein, the first SSB group belongs to the first cell, and the second value is greater than the first value.

2. The first node according to claim 1, characterized in that, The evaluation of the first cell 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, characterized in that, The evaluation of the first cell includes: determining the cell selection reception level value Srxlev of the first cell, wherein whether the Srxlev of the first cell includes a first offset depends on whether the first SSB group is requested; when the first SSB group is requested, the Srxlev of the first cell includes the first offset; when the first SSB group is not requested, the Srxlev of the first cell does not include the first offset.

4. The first node according to claim 1, characterized in that, The cell selection process includes: if no suitable cell is found within the first time period, performing cell evaluation within the second time period; and if a suitable cell is found within the first time period, selecting the suitable cell.

5. The first node according to claim 1, characterized in that, The second value depends on the period during which the resources of the SSBs included in the first SSB group are requested.

6. The first node according to claim 1, characterized in that, include: A first receiver listens for 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 claim 1, characterized in that, include: The first transmitter, in response to the fulfillment of the first condition, sends a first signal that requests the SSB of the first cell; The first receiver receives the SSB of the first cell; The first condition includes failing to receive the SSB of the first cell within the time length of the first value.

8. The first node according to claim 1, characterized in that, include: The first transmitter, in response to the fulfillment of the second condition, sends a first signal that requests the SSB of the first cell; The first receiver receives the SSB of the first cell; The second condition includes the failure to find a suitable cell within the time length of the third value.

9. The first node according to claim 1, characterized in that, include: The first receiver, in response to the first cell not meeting the S criterion within a first time length, initiates measurements of all neighboring cells; the first time length depends on whether the first SSB group is based on a request. The first node selected the first cell.

10. A method for a first node in wireless communication, wherein, include: Receive a first signaling message, wherein the first signaling message indicates the release of the Radio Resource Control (RRC) connection; In response to receiving the first signaling, it enters the RRC idle state or the RRC inactive state. Cell selection is performed when the cell enters the RRC idle state or the RRC inactive state. Based on the first signaling, determine whether the first synchronization signal block (SSB) group is based on a request; The target duration for evaluating the first cell is determined based on whether the first SSB group is based on a request. The specific method is as follows: In response to determining that the first SSB group is based on a request, the target duration is determined to be equal to the second value; In response to determining that the first SSB group is not based on a request, the target duration is determined to be equal to a first value; and The first cell is evaluated within the target duration; Wherein, the first SSB group belongs to the first cell, and the second value is greater than the first value.

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