Method and apparatus used in wireless communication

Abstract

The present application discloses a method and apparatus in wireless communication. The method comprises: a first node receives an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; sends a PRACH on a first random access resource, the first random access resource being for the on-demand SIB1 transmission; in response to sending the PRACH, monitors an RAR; in response to receiving the RAR, monitors the on-demand SIB1 on the first cell within a first time window; and sends a first report on a second cell, the first report comprising, for the first cell, one of a first information block or a second information block. Whether the first report comprises the first information block or the second information block depends on whether the on-demand SIB1 was received. The first information block indicates a network identity, and the second information block indicates noSIB1. The first cell is a neighbor cell of the second cell. The present application is beneficial for determining the specific content of reporting CGI information for a neighbor cell supporting on-demand SIB1 transmission.

Description

A method and apparatus for use in wireless communication

[0001] This application claims priority to Chinese Patent Application No. 202411603639.9, filed on November 11, 2024, entitled "A method and apparatus for use in wireless communication", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to methods and apparatus in wireless communication systems, and more particularly to methods and apparatus for reporting CGI (Cell Global Identifier) ​​for NES cells in wireless communication. Background Technology

[0003] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. To meet the diverse performance needs of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to research NR (New Radio) technology (or Fifth Generation, 5G). The NR WI (Work Item) was approved at the 3GPP RAN #75 plenary meeting, initiating standardization work for NR. The design of the 5G system in Release 15 has already considered some major application scenarios. Subsequent versions will not only consider enhancements to the 5G system architecture but will also further enhance vertical applications to provide more flexible service matching, more robust transmission, and a more consistent user experience.

[0004] Self-Organizing Networks (SONs) encompass network self-configuration and self-optimization, enabling terminals to measure and collect key metrics and adaptively adjust parameters to provide reliable support for optimizing mobility performance. Existing 3GPP protocols support User Equipment (UE) storing and collecting relevant information, accompanied by information reporting of the availability and indication of the stored and collected information, facilitating base station scheduling. Automatic Neighbour Relation (ANR), as one SON solution, effectively establishes neighbor relationships between adjacent base station units based on UE measurement and CGI reporting.

[0005] With the rapid development of 5G, base station deployments are becoming denser, and the periodic transmission of system information consumes a significant portion of the network's power. Network energy saving (NES) is crucial for environmental sustainability, reducing environmental impact, and saving operating costs. Due to the demands of higher data rates, denser networks, more antennas, greater bandwidth, and more frequency bands, the environmental impact of wireless communication systems needs to be controlled. 3GPP Release 19 (Release 19) established the "Enhancing Network Energy Saving for NR" working group to research more effective network energy saving solutions. Summary of the Invention

[0006] The inventors discovered through research that in ANR (Application Not Responding), the UE may be instructed by the network to report CGI (Cellular Geographic Information) from neighboring cells. The specific information included in the CGI depends on whether SIB1 (System Information Block 1) is received in the neighboring cell. In conventional technology, if SIB1 can be received in the neighboring cell, the reported CGI information can include the plmn-Identity (Public Land Mobile Network-Identity) or npn-Identity (Non-Public Network Identity) of the first cell; if the neighboring cell does not periodically broadcast SIB1, the UE can report noSIB1 to the base station. However, when the neighboring cell is an NES (Network Elementary System) cell that transmits SIB1 on demand, whether and how to report the CGI requires further research.

[0007] To address the aforementioned issues, this application discloses a solution: First, it is determined that the neighboring cell is an NES cell transmitting on-demand SIB1. Then, on-demand SIB1 is requested from the neighboring cell. If on-demand SIB1 is successfully received through the on-demand SIB1 request, then plmn-Identity or npn-Identity is included in the reported CGI information; otherwise, noSIB1 is included in the reported CGI information. Where there is no conflict, the embodiments and features in the embodiments of the first node of this application can be applied to the second node, and vice versa. Where there is no conflict, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. Where there is no conflict, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. Although the initial purpose of this application is for network energy-saving scenarios, it is also applicable to other non-network energy-saving scenarios facing similar problems, including but not limited to on-demand downlink data transmission. Furthermore, although the initial purpose of this application is for CGI reporting, it can also be used for other types of reporting to achieve similar technical effects. In addition, adopting a unified solution for different scenarios also helps to reduce hardware complexity and cost. In particular, the interpretation of terms, nouns, functions and variables in this application (unless otherwise specified) can be found in the definitions in the 3GPP specification protocols TS36, TS38 and TS37 series.

[0008] This application discloses a method used in a first node of wireless communication, characterized by comprising:

[0009] Receive SSB (SS (Synchronization Signals) / PBCH (Physical Broadcast Channel) block) on the first cell, the SSB indicating on-demand SIB1 (OD-SIB1) transmission;

[0010] A PRACH (Physical Random Access Channel) is transmitted on a first random access resource, which is for the on-demand SIB1 transmission.

[0011] In response to sending the PRACH, monitor the RAR (Random Access Response).

[0012] In response to receiving the RAR, the on-demand SIB1 is monitored on the first cell within the first time window;

[0013] Send a first report on the second cell, the first report being for the first cell including either a first information block or a second information block;

[0014] The first report includes either the first information block or the second information block, depending on whether the on-demand SIB1 is received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0015] As one example, the first node is a terminal.

[0016] As an example, the first node is an R19 NES UE.

[0017] As an example, the first node supports OD-SIB1.

[0018] As an example, the first node supports on-demand requests for SIB1.

[0019] As an example, the first node is in an RRC connected (RRC_CONNECTED) state.

[0020] As an example, the SSB confirms that the first cell is an NES cell that transmits SIB1 on demand.

[0021] As an example, SIB1 is requested on demand in the first cell based on the random access procedure.

[0022] As an example, this application is applicable to scenarios where the on-demand SIB1 is obtained based on a random access procedure.

[0023] As an example, the first random access resource for the on-demand SIB1 transmission includes: the first random access resource is a dedicated resource for requesting the on-demand SIB1 transmission. The advantage of the above method is that there is no contention, which helps to reduce the latency of obtaining SIB1.

[0024] As an example, the RAR implicitly indicates that the network has received the on-demand SIB1 request in the first cell.

[0025] As an example, monitoring the on-demand SIB1 after receiving the RAR helps the first node determine when to start monitoring and scheduling the DCI (Downlink Control Information) of the on-demand SIB1.

[0026] As an example, the specific content of the first report depends on whether the on-demand SIB1 is received in the first cell.

[0027] As an example, the advantage of the above method is that it helps the terminal determine the specific content included in the reported CGI information.

[0028] According to one aspect of this application, the above method is characterized in that when the on-demand SIB1 is received within the first time window, the first report includes the first information block; when the on-demand SIB1 is not received within the first time window, the first report includes the second information block.

[0029] According to one aspect of this application, the above method is characterized by comprising:

[0030] Receive a first RRC (Radio Resource Control) message on the second cell. The first RRC message indicates that the CGI (Cell Global Identifier) ​​of the first cell should be reported.

[0031] The first report is a response to the first RRC message.

[0032] As an example, the first report is requested by the network.

[0033] As an example, the first report is triggered by the network.

[0034] As an example, the CGI is NCGI (NR Cell Global Identifier).

[0035] According to one aspect of this application, the above method is characterized by comprising:

[0036] A second report is sent on the second cell, the second report indicating at least one of the channel quality of the first cell and the first cell supporting the on-demand SIB1 transmission;

[0037] The channel quality of the first cell is obtained by measuring the SSB; the second report is used to trigger the first report.

[0038] As an example, the second report helps the network decide whether to send the first RRC information to trigger the first report.

[0039] As an example, instructing the network via the second report that the first cell supports the on-demand SIB1 transmission facilitates the network scheduling an appropriate time length for the terminal to read the CGI of the neighboring cell in order to receive the first report.

[0040] According to one aspect of this application, the above method is characterized by comprising:

[0041] Receive a second RRC configuration, the second RRC configuration indicating a first cell list and a first resource set; the first resource set includes the first random access resource and the first PDCCH (Physical Downlink Control Channel) resource for monitoring and scheduling the RAR transmission;

[0042] The first resource set is applied to any cell in the first cell list, and the first cell list includes the first cell.

[0043] According to one aspect of this application, the above method is characterized in that the start time of the first time window is offset by M time units from the end of reception time of the RAR.

[0044] Wherein, M is equal to 0 or a positive integer greater than 0.

[0045] According to one aspect of this application, the above method is characterized in that the SSB indicates a PDCCH parameter, the PDCCH parameter indicating at least one of a control resource set and a search space;

[0046] The monitoring of the on-demand SIB1 includes monitoring the second PDCCH in the resources indicated by the PDCCH parameters.

[0047] According to one aspect of this application, the above method is characterized in that the second PDCCH indicates the position of the frequency domain resource for receiving the on-demand SIB1 in the second frequency domain resource;

[0048] Wherein, the SSB occupies the first frequency domain resource; the SSB indicates that the starting position of the second frequency domain resource is offset from the starting position of the first frequency domain resource by K subcarriers, where K is an integer.

[0049] According to one aspect of this application, the above method is characterized in that the second PDCCH indicates a first index, which is applied to a first table to determine the time-domain resources for receiving the on-demand SIB1;

[0050] The first table is applied to the on-demand SIB1.

[0051] As an example, the above method can reduce signaling overhead and simplify standardization work by applying the first table to determine the time-domain resources in the on-demand SIB1 transmission.

[0052] As an example, the above method can flexibly schedule the time-domain resources for receiving the on-demand SIB1.

[0053] According to one aspect of this application, the above method is characterized in that the SSB indicates periodically sending SIB1, or not sending SIB1, or sending the SIB1 on demand.

[0054] This application discloses a terminal, characterized in that it includes:

[0055] The terminal includes: one or more processors and memory;

[0056] The memory is coupled to the one or more processors and is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the terminal to execute the method described above in the first node.

[0057] As one example, the terminal is a UE (User Equipment).

[0058] This application discloses a method used in a second node for wireless communication, characterized by comprising:

[0059] An SSB is sent on the first cell, the SSB indicating on-demand SIB1 transmission;

[0060] Receive PRACH on a first random access resource, the first random access resource being for the on-demand SIB1 transmission;

[0061] In response to receiving the PRACH, a RAR is sent;

[0062] In response to sending the RAR, the on-demand SIB1 is sent on the first cell within the first time window;

[0063] In this process, a first report is sent on the second cell, and the first report for the first cell includes either a first information block or a second information block; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 is received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0064] or,

[0065] Receive a first report on the second cell, the first report being for the first cell including either a first information block or a second information block;

[0066] In this process, an SSB is received on a first cell, the SSB indicating on-demand SIB1 transmission; a PRACH is sent on a first random access resource for the on-demand SIB1 transmission; a RAR is monitored in response to the PRACH transmission; the on-demand SIB1 is monitored on the first cell within a first time window in response to the RAR reception; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0067] In one embodiment, the second node is a base station.

[0068] According to one aspect of this application, the above method is characterized in that when the on-demand SIB1 is received within the first time window, the first report includes the first information block; when the on-demand SIB1 is not received within the first time window, the first report includes the second information block.

[0069] According to one aspect of this application, the above method is characterized by including...

[0070] Send a first RRC message on the second cell, the first RRC message indicating that the CGI of the first cell should be reported;

[0071] The first report is a response to the first RRC message.

[0072] According to one aspect of this application, the above method is characterized by comprising:

[0073] A second report is received on the second cell, the second report indicating at least one of the channel quality of the first cell and the first cell supporting the on-demand SIB1 transmission;

[0074] The channel quality of the first cell is obtained by measuring the SSB; the second report is used to trigger the first report.

[0075] According to one aspect of this application, the above method is characterized by comprising:

[0076] Send a second RRC configuration, which indicates a first cell list and a first resource set; the first resource set includes the first random access resource and the resource for monitoring and scheduling the first PDCCH of the RAR transmission;

[0077] The first resource set is applied to any cell in the first cell list, and the first cell list includes the first cell.

[0078] As an example, the second node sends the first PDCCH.

[0079] According to one aspect of this application, the above method is characterized in that the start time of the first time window is offset by M time units from the end time of the RAR reception.

[0080] Wherein, M is equal to 0 or a positive integer greater than 0.

[0081] According to one aspect of this application, the above method is characterized in that the SSB indicates a PDCCH parameter, the PDCCH parameter indicating at least one of a control resource set and a search space;

[0082] The monitoring of the on-demand SIB1 includes monitoring the second PDCCH in the resources indicated by the PDCCH parameters.

[0083] As an example, the second node sends the second PDCCH.

[0084] According to one aspect of this application, the above method is characterized in that the second PDCCH indicates the position of the frequency domain resource for receiving the on-demand SIB1 in the second frequency domain resource;

[0085] Wherein, the SSB occupies the first frequency domain resource; the SSB indicates that the starting position of the second frequency domain resource is offset from the starting position of the first frequency domain resource by K subcarriers, where K is an integer.

[0086] According to one aspect of this application, the above method is characterized in that the second PDCCH indicates a first index, which is applied to a first table to determine the time-domain resources for receiving the on-demand SIB1;

[0087] The first table is applied to the on-demand SIB1.

[0088] According to one aspect of this application, the above method is characterized in that the SSB indicates periodically sending SIB1, or not sending SIB1, or sending the SIB1 on demand.

[0089] This application discloses a base station, characterized in that it includes:

[0090] The base station includes: one or more processors and a memory;

[0091] The memory is coupled to the one or more processors and is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the base station to perform the methods described above in the second node. Attached Figure Description

[0092] 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:

[0093] Figure 1 illustrates a transmission flowchart in a first node according to an embodiment of this application;

[0094] Figure 2 illustrates a schematic diagram of a network architecture according to an embodiment of this application;

[0095] Figure 3 illustrates a schematic diagram of the wireless protocol architecture of the user plane and control plane according to an embodiment of this application;

[0096] Figure 4 illustrates a schematic diagram of the hardware modules of a communication device according to an embodiment of this application;

[0097] Figure 5 illustrates a flowchart of wireless signal transmission according to an embodiment of this application;

[0098] Figure 6 illustrates a signal processing flowchart in a first node according to an embodiment of this application;

[0099] Figure 7 illustrates another wireless signal transmission flowchart according to an embodiment of this application;

[0100] Figure 8 illustrates a schematic diagram of the timing relationship between the RAR reception end time and the first time window according to an embodiment of this application;

[0101] Figure 9 illustrates a schematic diagram of a first frequency domain resource, a second frequency domain resource, and K subcarriers according to an embodiment of this application;

[0102] Figure 10 illustrates a schematic diagram of a first index and a first table according to an embodiment of this application;

[0103] Figure 11 illustrates a structural block diagram of a processing apparatus in a first node according to an embodiment of this application;

[0104] Figure 12 illustrates a structural block diagram of a processing apparatus in a second node according to an embodiment of this application. Detailed Implementation

[0105] 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.

[0106] Example 1

[0107] Example 1 illustrates a transmission flowchart in a first node according to an embodiment of this application, as shown in Figure 1.

[0108] In Example 1, the first node 100 receives an SSB on a first cell in step 101, the SSB indicating on-demand SIB1 transmission; in step 102, it sends a PRACH on a first random access resource for the on-demand SIB1 transmission; in step 103, it monitors the RAR in response to sending the PRACH; in step 104, it monitors the on-demand SIB1 on the first cell within a first time window in response to receiving the RAR; and in step 105, it sends a first report on a second cell, the first report including either a first information block or a second information block for the first cell; wherein, whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0109] As an example, the first cell is an NES cell.

[0110] As an example, the first cell supports sending SIB1 transmissions on demand.

[0111] As an example, the SSB is searched on the synchronization raster.

[0112] As an example, the SSB is periodically broadcast in the first cell.

[0113] As an example, the SSB is always-on.

[0114] As an example, the SSB is transmitted on the synchronization grid.

[0115] As an example, the SSB is a CD (cell-defined)-SSB.

[0116] As one embodiment, the SSB includes a synchronization signal.

[0117] As one embodiment, the synchronization signal includes the primary synchronization signal (PSS).

[0118] As one embodiment, the synchronization signal includes a secondary synchronization signal (SSS).

[0119] As an example, the SSB includes the PBCH (Physical broadcast channel).

[0120] As an example, the PBCH carries broadcast information.

[0121] As an example, the broadcast information is located in the PBCH payload.

[0122] As one example, the broadcast information includes a MIB (Master Information Block).

[0123] As an example, the broadcast information is a MIB.

[0124] As an example, the broadcast information includes at least one field in the MIB.

[0125] As one example, the broadcast information includes all fields in the MIB.

[0126] As an example, the SSB indicates the cell identifier of the first cell.

[0127] As an example, the SSB indicates the PCI (Physical Cell Identifier) ​​of the first cell.

[0128] As an example, the PCI of the first cell is obtained through the primary synchronization signal and the secondary synchronization signal, specifically referring to the 3GPP standard, which will not be elaborated here.

[0129] As an example, time-domain synchronization and frequency-domain synchronization with the first cell are obtained according to the SSB. For details, please refer to the 3GPP standard, which will not be elaborated here.

[0130] As an example, the SSB indicates the carrier frequency of the first cell.

[0131] As an example, the SSB indicates the ARFCN (Absolute Radio Frequency Channel Number)-ValueNR (ARFCN value for NR) of the first cell.

[0132] As an example, the first node is configured to perform measurements for the SSB.

[0133] As an example, the first node is configured with MeasObjectNR (Measurement Object for NE) IE (Information Element).

[0134] As an example, the MeasObjectNR IE indicates the ARFCN-ValueNR of the first cell.

[0135] As an example, the first node maintains a first cell list, and supports the on-demand SIB1 transmission in each cell included in the first cell list; the SSB indicates a cell in the first cell list.

[0136] As an example, the SSB indicates that the first cell is a cell in the first cell list.

[0137] As an example, one cell in the first cell list is identified by a PCI, and the first cell list includes at least one PCI that includes the PCI of the first cell.

[0138] As a sub-implementation of the above embodiments, the above method implicitly indicates support for the on-demand SIB1 transmission in the first cell through PCI, which can simplify signaling overhead.

[0139] As an example, one cell in the first cell list is identified by an ARFCN-ValueNR, and at least one ARFCN-ValueNR included in the first cell list includes the ARFCN-ValueNR of the first cell.

[0140] As a sub-implementation of the above embodiments, the above method implicitly indicates support for the on-demand SIB1 transmission in the first cell through ARFCN-ValueNR, which can simplify signaling overhead.

[0141] As an example, the SSB includes the MIB instruction to send the on-demand SIB1.

[0142] As one embodiment, the SSB indicates a first value, which indicates periodically sending SIB1, not sending SIB1, or sending the on-demand SIB1.

[0143] As an example, the SSB indicating the first value includes: the ssb-SubcarrierOffset (SSB subcarrier offset) field included in the MIB indicating the first value.

[0144] As an example, the SSB indicating the first value includes: the ssb-SubcarrierOffset field included in the MIB and the PBCH indicating the first value.

[0145] As an example, when the first value is periodically transmitted as SIB1, SIB1 is periodically transmitted in the first cell.

[0146] As an example, when the first value indicates that SIB1 is not being sent, there is no periodically sent SIB1 in the first cell.

[0147] As an example, when the first value indicates that the on-demand SIB1 should be sent, the on-demand SIB1 is sent in the first cell.

[0148] As an example, the first value is indicated by K bits; where K is a positive integer greater than 1.

[0149] As an example, the K bits indicating the first value are provided by the ssb-SubcarrierOffset field.

[0150] As a sub-example of the above embodiment, K equals 4.

[0151] As an example, the highest 1 bit of the K bits of the first value is provided by the PBCH, and the lowest (K-1) bits of the K bits of the first value are provided by the ssb-SubcarrierOffset field.

[0152] As a sub-example of the above embodiment, K equals 5.

[0153] As an example, the first value ranges from 0 to 2K-1; wherein, the first part of the value indicates that SIB1 is sent periodically, the second part of the value indicates that SIB1 is not sent, and the third part of the value indicates that the on-demand SIB1 is sent; wherein, the first part of the value, the second part of the value, and the third part of the value are orthogonal; wherein, K is a positive integer greater than 1.

[0154] Specifically, the first value is indicated by 4 bits. When the first value is between 0000 and 1011, it indicates that SIB1 is sent periodically; when the first value is between 1100 and 1110, it indicates that SIB1 is sent on demand; when the first value indicates 1111, it indicates that SIB1 is not sent.

[0155] Specifically, the first value is indicated by 5 bits. When the first value is between 00000 and 01011, it indicates that SIB1 is sent periodically; when the first value is between 11000 and 11011, it indicates that the on-demand SIB1 is sent; when the first value is any other remaining value, it indicates that SIB1 is not sent.

[0156] As an example, the SSB includes a first field indicating the transmission of the on-demand SIB1; wherein the first field is 1 bit.

[0157] As a sub-implementation of the above embodiments, the first field is in the MIB message.

[0158] As a sub-implementation of the above embodiments, the above method explicitly indicates whether the on-demand SIB1 is transmitted in the first cell through the first field.

[0159] As a sub-implementation of the above embodiment, when the first field is 1, it indicates that the on-demand SIB1 is sent.

[0160] As a sub-implementation of the above embodiment, when the first field is true, it indicates that the on-demand SIB1 should be sent.

[0161] As an example, when the first field indicates that the on-demand SIB1 is not sent, it is further determined whether to send SIB1 periodically based on the ssb-SubcarrierOffset field.

[0162] As a sub-implementation of the above embodiments, the above method jointly instructs, through the first field and the ssb-SubcarrierOffset field, to periodically send SIB1 in the cell, or not to send SIB1, or to send the on-demand SIB1.

[0163] As an example, when the first field indicates the transmission of the on-demand SIB1, the ssb-SubcarrierOffset field indicates the frequency domain offset in number of subcarriers between the SSB and the overall resource block grid, wherein at least one of the frequency domain resources for receiving the RAR and the frequency domain resources for receiving the on-demand SIB1 is located within the overall resource block grid.

[0164] As an example, when the first field indicates that the on-demand SIB1 is not transmitted, and the ssb-SubcarrierOffset field indicates that the SIB1 is transmitted periodically, the ssb-SubcarrierOffset indicates the frequency domain offset in the number of subcarriers between the SSB and the overall resource block grid.

[0165] As an example, the name of the first domain includes SIB1.

[0166] As an example, the name of the first domain includes OD-SIB1.

[0167] As an example, the first field is SIB1status (SIB1 status).

[0168] As an example, the SSB indicates that the on-demand SIB1 transmission includes: the first cell is a cell in the first cell list.

[0169] As one embodiment, the SSB instructing the on-demand SIB1 transmission includes: the first value instructing that only the on-demand SIB1 is transmitted in the first cell.

[0170] As a sub-example of the above embodiment, the first value is a value between 1100 and 1110.

[0171] As a sub-example of the above embodiment, the first value is a value between 11000 and 11011.

[0172] As an example, the SSB indicates that the on-demand SIB1 transmission includes: the first field is 1, or true.

[0173] As an example, when the SSB instructs the on-demand SIB1 transmission, a random access procedure is initiated for the first cell to request the on-demand SIB1.

[0174] As an example, the PRACH is transmitted in the first cell.

[0175] As an example, the PRACH is sent on the first random access resource.

[0176] As an example, when the SSB instructs the on-demand SIB1 transmission, the PRACH is transmitted on the first random access resource.

[0177] As an example, the frequency domain resources of the first cell include the frequency domain resources corresponding to the first random access resources.

[0178] As an example, the frequency domain resources corresponding to the first random access resources are a subset of the frequency domain resources of the first cell.

[0179] As one example, the frequency domain resources corresponding to the first random access resource overlap with the frequency domain resources of the first cell.

[0180] As one example, the first random access resource is network-configured.

[0181] As an example, the first random access resource is used at least to request the on-demand SIB1 transmission.

[0182] As an example, the first random access resource is used only to request the on-demand SIB1 transmission.

[0183] As one embodiment, the first random access resource for the on-demand SIB1 transport includes: the first random access resource is a dedicated random access resource configured to request the on-demand SIB1 transport.

[0184] As one embodiment, the first random access resource for the on-demand SIB1 transport includes: the first random access resource is a CFRA (Contention-Free Random Access) resource configured to request the on-demand SIB1 transport.

[0185] As an example, the power used to transmit the PRACH is the UE's maximum transmit power.

[0186] As an example, the PRACH is sent to request the on-demand SIB1.

[0187] As one embodiment, sending the PRACH includes: sending a signal on the PRACH.

[0188] As one embodiment, sending the PRACH includes: sending a random access preamble on the PRACH; wherein the random access preamble is indicated by the first random access resource.

[0189] As one embodiment, sending the PRACH includes: sending a random access preamble at a RACH timing; wherein the RACH timing is indicated by the first random access resource.

[0190] As an example, a random access preamble sent on the PRACH is used at least to request the on-demand SIB1 transmission.

[0191] As an example, a random access preamble sent on the PRACH is used only to request the on-demand SIB1 transmission.

[0192] As an example, in response to sending the PRACH, the RAR is monitored in the first cell.

[0193] As an example, monitoring of the RAR begins on the first PDCCH occasion after the PRACH transmission ends.

[0194] As an example, the end of PRACH transmission includes the end of transmission of a random access preamble sent on the PRACH.

[0195] As an example, the end of PRACH transmission includes the end of the transmission of the last transmission of all repetitions of a random access preamble transmitted on the PRACH; wherein the PRACH includes repetitions.

[0196] As an example, the RAR is monitored in a second time window.

[0197] As an example, the time interval between the start time of the second time window and the end time of the PRACH transmission is predefined.

[0198] As an example, the time interval between the start time of the second time window and the end time of the PRACH transmission is fixed.

[0199] As an example, the start time of the second time window is the boundary of the first symbol in the first PDCCH timing after the end of the PRACH transmission.

[0200] As an example, the duration of the second time window is configured.

[0201] As an example, the duration of the second time window is indicated by the second RRC configuration.

[0202] As an example, the second time window is ra-ResponseWindow (random access response window).

[0203] As one embodiment, monitoring the RAR includes: monitoring the first PDCCH that schedules the RAR transmission.

[0204] As one embodiment, monitoring the first PDCCH includes monitoring the signal on the first PDCCH.

[0205] As an example, monitoring the first PDCCH includes: blind decoding of the DCI carried by the first PDCCH.

[0206] As an example, the first PDCCH is addressed to RA-RNTI (Radio Network Temporary Identifier).

[0207] As an example, the CRC (Cyclic Redundancy Check) of the transport block (TB) generated by the RAR is scrambled by the RA-RNTI.

[0208] As an example, the resource for monitoring and scheduling the first PDCCH of the RAR transmission is configured.

[0209] As an example, the resource of the first PDCCH that monitors and schedules the RAR transmission is indicated by pdcch-ConfigRAR (PDCCH Configuration for Random Access Response) IE.

[0210] As an example, the resource of the first PDCCH that monitors and schedules the RAR transmission is indicated by pdcch-ConfigOD-SIB1-RAR (PDCCH configuration for random access response of SIB1 on demand) IE.

[0211] As an example, the resource of the first PDCCH that monitors and schedules the RAR transmission is indicated by the SSB.

[0212] As an example, the resources of the first PDCCH that monitors and schedules the RAR transmission are indicated by the searchSpaceZero field and the controlResourceSetZero field.

[0213] As an example, the searchSpaceZero field and the controlResourceSetZero field are located in PDCCH-ConfigSIB1 IE.

[0214] As an example, the SSB includes the MIB indicating the PDCCH-ConfigSIB1 IE.

[0215] As an example, the first PDCCH indicates the receipt of the RAR's scheduling information.

[0216] As an example, the first PDCCH includes a valid downlink assignment, which indicates the time-domain and frequency-domain resources for receiving the RAR.

[0217] As one embodiment, monitoring the RAR includes receiving the RAR in the downlink allocation included in the first PDCCH.

[0218] As an example, the RAR is received in the first cell; wherein, the first PDCCH is received.

[0219] As an example, the RAR is a MAC (Medium Access Control) RAR.

[0220] As an example, receiving the RAR includes: receiving the first PDSCH, the first PDSCH carrying a MAC PDU (Protocol Data Unit), the MAC PDU including at least one MAC subPDU, and one of the at least one MAC subPDU including the RAR.

[0221] As an example, the MAC subheader corresponding to the RAR includes at least a random access preamble identifier (RAPID); wherein the random access preamble identifier indicates the random access preamble transmitted on the PRACH.

[0222] As one embodiment, receiving the first PDSCH includes: receiving a signal transmitted on the first PDSCH.

[0223] As an example, receiving the first PDSCH includes: decoding the TB (transport block) carried by the first PDSCH.

[0224] As an example, in response to receiving the RAR, the on-demand SIB1 is monitored on the first cell within a first time window.

[0225] As an example, the first time window is the receiving window of the on-demand SIB1.

[0226] As one embodiment, monitoring the on-demand SIB1 includes: monitoring the second PDCCH that schedules the on-demand SIB1.

[0227] As one embodiment, monitoring the second PDCCH includes monitoring the signal on the second PDCCH.

[0228] As an example, monitoring the second PDCCH includes blind decoding of the DCI carried by the second PDCCH.

[0229] As an example, the second PDCCH is addressed to SI (System Information) - RNTI.

[0230] As an example, the CRC of the transport block generated by the on-demand SIB1 is scrambled by the RA-RNTI.

[0231] As an example, the resources used to monitor the second PDCCH are configured by the network.

[0232] As an example, the resources of the second PDCCH are monitored to be configured by the PDCCH-ConfigSIB1 IE.

[0233] As an example, the resources monitoring the second PDCCH are configured by PDCCH-ConfigOD-SIB1 (SIB1 Physical Downlink Control Channel Configuration on Demand) IE.

[0234] As an example, the resource monitoring the second PDCCH is indicated by the SSB.

[0235] As a sub-implementation of the two embodiments described above, the first value is not 1110.

[0236] As a sub-implementation of the two embodiments described above, the first value is not 11011.

[0237] As an example, the SSB indicates the PDCCH parameters, which in turn indicate the resource for monitoring the second PDCCH.

[0238] As an example, the PDCCH parameter indicates the search space for monitoring the second PDCCH.

[0239] As an example, the PDCCH parameter indicates the control resource set for monitoring the second PDCCH.

[0240] As an example, the PDCCH parameters are provided by the PDCCH-ConfigSIB1 IE.

[0241] As an example, the PDCCH parameters are provided by the PDCCH-ConfigOD-SIB1 IE.

[0242] As an example, the searchSpaceZero field indicates the search space for monitoring the second PDCCH.

[0243] As an example, the controlResourceSetZero field indicates the control resource set that monitors the second PDCCH.

[0244] As an example, monitoring the on-demand SIB1 includes monitoring the second PDCCH in the resource indicated by the PDCCH parameters.

[0245] As an example, the second PDCCH indicates the receipt of the on-demand SIB1 scheduling information.

[0246] As one embodiment, the second PDCCH includes a valid downlink allocation, the downlink allocation of the second PDCCH indicating the receipt of the time-domain and frequency-domain resources of the on-demand SIB1.

[0247] As an example, monitoring the on-demand SIB1 includes: receiving the second PDCCH within the first time window, and receiving the on-demand SIB1 in the downlink allocation indicated by the second PDCCH.

[0248] As an example, the on-demand SIB1 was not received in the first cell within the first time window.

[0249] As an example, the on-demand SIB1 is received in the first cell within the first time window.

[0250] As one embodiment, receiving the on-demand SIB1 includes: receiving the second PDSCH; wherein the second PDCCH indicates the second PDSCH.

[0251] As one embodiment, receiving the second PDSCH includes receiving a signal transmitted on the second PDSCH.

[0252] As one embodiment, receiving the second PDSCH includes: decoding the TB carried by the second PDSCH, wherein the TB carried by the second PDSCH includes the on-demand SIB1.

[0253] As an example, the second PDCCH indicates at least one PDSCH, which carries the on-demand SIB1 respectively; wherein the on-demand SIB1 is repeatedly transmitted.

[0254] As an example, the advantage of the above method is that it can improve the transmission robustness of the on-demand SIB1.

[0255] As an example, the at least one PDSCH includes the second PDSCH.

[0256] As an example, a PDSCH carrying the on-demand SIB1 includes: the PDSCH carrying a MAC PDU, the MAC PDU including the on-demand SIB1.

[0257] As an example, a PDSCH carrying the on-demand SIB1 includes: the PDSCH carrying a MAC PDU, the MAC PDU including at least one MAC subPDU, and one of the at least one MAC subPDU including the on-demand SIB1.

[0258] As an example, a PDSCH carrying the on-demand SIB1 includes: the PDSCH carrying an RRC message, the RRC message including the on-demand SIB1.

[0259] As a sub-example of the above embodiment, the RRC message is RRCReconfiguration.

[0260] As an example, the first report is sent on the second cell.

[0261] As an example, the second cell is the serving cell of the first node.

[0262] As an example, the second cell and the first cell are different cells.

[0263] As one example, the second cell and the first cell are adjacent cells.

[0264] As an example, the first report is a Layer 3 report.

[0265] As an example, the first report is an RRC message.

[0266] As an example, the first report is used at least to report CGI.

[0267] As an example, the first report includes CGI-InfoNR (CGI Information for NR) IE.

[0268] As one embodiment, the first report includes one of a first information block and a second information block.

[0269] As an example, the first information block indicates the plmn-Identity of the first cell.

[0270] As an example, the first information block includes a plmb-IdentityInfoList (Public Land Mobile Network Identifier List) field, the plmb-IdentityInfoList field indicating at least one PLMN-IdentityInfo (Public Land Mobile Network Identifier Information), a PLMN-IdentityInfo including a plmn-IdentityList (Public Land Mobile Network Identifier List), the plmn-IdentityList indicating at least one plmn-Identity; wherein, one of the at least one plmn-Identity is the plmn-Identity of the first cell.

[0271] As an example, a plmn-Identity indicates the MCC (Mobile Country Code) and MNC (Mobile Network Code).

[0272] As an example, the first information block indicates the npn-Identity of the first cell.

[0273] As an example, the first information block includes an npn-IdentityInfoList field, the npn-IdentityInfoList field indicating at least one NPN-IdentityInfo (non-public network identification information), an NPN-IdentityInfo including an npn-IdentityList (non-public network identification information list), the npn-IdentityList indicating at least one npn-Identity; wherein, one of the at least one npn-Identity is the npn-Identity of the first cell.

[0274] As an example, an npn-Identity identifies a PNI-NPN (Public Network Integrated NPN).

[0275] As an example, an npn-Identity identifies an SNPN (Stand-alone NPN, independent non-public network).

[0276] As one embodiment, the first information block includes the TrackingAreaCode of the first cell.

[0277] As one embodiment, the first information block includes the RAN-AreaCode of the first cell.

[0278] As an example, the first information block includes the CellIdentity of the first cell.

[0279] As an example, the first report for the first cell includes: the first report includes the plmn-Identity of the first cell.

[0280] As an example, the first report for the first cell includes: the first report includes the npn-Identity of the first cell.

[0281] As an example, the second information block indicates noSIB1.

[0282] As an example, the second information block indicates that SIB1 was not broadcast in the first cell.

[0283] As one embodiment, the second information block includes the ssb-SubcarrierOffset field obtained from the MIB included in the SSB.

[0284] As one embodiment, the second information block includes the pdcch-ConfigSIB1 domain obtained from the MIB included in the SSB.

[0285] As an example, the first report for the first cell includes: the first report includes the ssb-SubcarrierOffset field and the pdcch-ConfigSIB1 field obtained from the MIB of the first cell; wherein, the first report includes the second information block.

[0286] As an example, one of the first information block and the second information block is reported.

[0287] As one embodiment, whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 is received.

[0288] As an example, when the on-demand SIB1 is received, the first report includes the first information block.

[0289] As one embodiment, receiving the on-demand SIB1 includes: receiving the RAR after sending the PRACH; and receiving the on-demand SIB1 within the first time window.

[0290] As an example, the on-demand SIB1 indicates the plmn-Identity of the first cell.

[0291] As an example, the on-demand SIB1 indicates the npn-Identity of the first cell.

[0292] As an example, the on-demand SIB1 indicates a CellAccessRelatedInfo (cell access related information) IE.

[0293] As an example, the CellAccessRelatedInfo IE includes the plmb-IdentityInfoList field.

[0294] As an example, the CellAccessRelatedInfo IE includes the npn-IdentityInfoList field.

[0295] As an example, the first information block includes a portion of the fields in the on-demand SIB1.

[0296] As an example, when the on-demand SIB1 is not received, the first report includes the second information block.

[0297] As an example, the failure to receive the on-demand SIB1 includes: receiving the RAR after sending the PRACH; and not receiving the on-demand SIB1 within the first time window.

[0298] As a sub-example of the above embodiment, the second PDCCH is monitored.

[0299] As a sub-example of the above embodiment, the second PDCCH was not detected.

[0300] As an example, the failure to receive the on-demand SIB1 includes: the random access procedure for requesting the on-demand SIB1 fails.

[0301] As an example, the PRACH is sent, and if the first PDCCH is not received when the first counter expires, the value of the first counter is incremented by one.

[0302] As an example, the first counter is PREAMBLE_TRANSMISSION_COUNTER.

[0303] As an example, the initial value of the first counter is 1.

[0304] As an example, when initiating the random access procedure to request the on-demand SIB1, the first timer is set to the initial value.

[0305] As an example, when the value of the first counter is less than the first threshold, the PRACH is sent again; for details, please refer to the 3GPP standard, which will not be repeated here.

[0306] As an example, when the value of the first counter is equal to the first threshold, it is considered that the random access procedure for requesting the on-demand SIB1 has failed.

[0307] As an example, the first threshold is 1 + preambleTransMax (preamble maximum value).

[0308] As an example, the preambleTransMax is configured.

[0309] As an example, the preambleTransMax is indicated by the second RRC configuration.

[0310] As an example, the first report is sent, the first report including the second information block; wherein, in order to request the failure of the random access procedure of the on-demand SIB1.

[0311] Example 2

[0312] Example 2 illustrates a network architecture diagram according to one embodiment of this application, as shown in Figure 2. Figure 2 illustrates a network architecture 200 of an NR 5G, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) system. The NR 5G, LTE, or LTE-A network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. The 5GS / EPS 200 may include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. The 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the 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. The NG-RAN includes NR Node Bs (gNBs) 203 and other gNBs 204. gNBs 203 provide user and control plane protocol termination toward the UE 201. gNBs 203 may connect to other gNBs 204 via Xn interfaces (e.g., backhaul links). The XnAP protocol of the Xn interface is used to transmit control plane messages for the wireless network, while the user plane protocol of the Xn interface is used to transmit user plane data. The gNB203 can also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), TRP (Transmission Reception Point), or some other suitable term. In NTN (Non-Terrestrial Network) networks, the gNB203 can be a satellite, an aircraft, or a ground base station relayed via satellite. The gNB203 provides the UE201 with an access point to the 5GC / EPC210.Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, in-vehicle equipment, in-vehicle communication units, 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, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless 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 Internet, intranet, IMS (IP Multimedia Subsystem), and PS (Packet Switching) streaming services.

[0313] As an example, UE201 corresponds to the first node in this application.

[0314] As an example, gNB203 corresponds to the second node in this application.

[0315] As an example, the UE201 is NES-aware.

[0316] As an example, the UE201 supports NES.

[0317] As an example, the gNB203 supports NES.

[0318] As an example, the gNB203 is a macrocell base station.

[0319] As an example, the gNB203 is a microcell base station.

[0320] As an example, the gNB203 is a pico cell base station.

[0321] As an example, the gNB203 is a femtocell.

[0322] As an example, the gNB203 is a base station device that supports large latency differences.

[0323] As one example, the gNB203 is a flight platform device.

[0324] As an example, the gNB203 is a satellite device.

[0325] As an example, the gNB203 is a base station device that supports large latency differences.

[0326] As one embodiment, the gNB203 is a test device (e.g., a transceiver device simulating part of the functions of a base station, a signaling tester).

[0327] As an example, the radio link from the UE201 to the gNB203 is an uplink, which is used to perform uplink transmissions.

[0328] As an example, the wireless link from the UE241 to the gNB203 is an uplink, which is used to perform uplink transmissions.

[0329] As an example, the radio link from the gNB203 to the UE201 is a downlink, which is used to perform downlink transmissions.

[0330] As an example, the radio link from the gNB203 to the UE241 is a downlink, which is used to perform downlink transmissions.

[0331] As an example, the UE201 and the gNB203 are connected via the Uu air interface.

[0332] As an example, the UE241 and the gNB203 are connected via the Uu air interface.

[0333] As an example, UE201 and UE241 are connected via a PC5 air interface.

[0334] Example 3

[0335] Example 3 illustrates a schematic diagram of the wireless protocol architecture for the user plane and control plane according to an embodiment of this application, as shown in Figure 3. Figure 3 is a schematic diagram illustrating an embodiment of the wireless protocol architecture for the user plane 350 and control plane 300. Figure 3 shows the wireless protocol architecture of the control plane 300 of the UE and gNB 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. The L1 layer will be referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the UE and gNB through PHY 301. L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. PDCP sublayer 304 provides data encryption and integrity protection, and also supports inter-gNB mobility for UEs. RLC sublayer 303 provides packet segmentation and reassembly, and implements retransmission of lost packets via ARQ (Automatic Repeat Request). RLC sublayer 303 also provides duplicate packet detection and protocol error detection. MAC sublayer 302 provides mapping between logical channels and transport channels, and multiplexing of logical channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among UEs. MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) operations. RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the gNB and the UE. The wireless protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The wireless protocol architecture 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 data packets to reduce wireless transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers to support service diversity. The radio protocol architecture of the UE in the user plane 350 at the L2 layer may include some or all of the protocol sublayers of the SDAP sublayer 356, PDCP sublayer 354, RLC sublayer 353, and MAC sublayer 352. Although not illustrated, the UE may also have several upper layers above the L2 layer 355, including 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., a remote UE, server, etc.).

[0336] As an example, the PDCP304 sends data to or receives data from the RLC303 via the RLC channel.

[0337] As an example, the PDCP354 sends data to or receives data from the RLC353 via the RLC channel.

[0338] As an example, the RLC303 sends data to or receives data from the MAC302 via a logical channel.

[0339] As an example, the RLC353 sends data to or receives data from the MAC352 via a logical channel.

[0340] As one embodiment, the MAC302 sends data to or receives data from the PHY301 through the transmission channel.

[0341] As one embodiment, the MAC352 sends data to or receives data from the PHY351 via the transmission channel.

[0342] As an example, the wireless protocol architecture in Figure 3 is applicable to the first node in this application.

[0343] As an example, the wireless protocol architecture in Figure 3 is applicable to the second node in this application.

[0344] As an example, the SSB in this application is generated in the PHY301 or the PHY351.

[0345] As an example, the PRACH in this application is generated in the PHY301 or the PHY351.

[0346] As an example, the RAR in this application is generated by MAC302 or MAC352.

[0347] As an example, the on-demand SIB1 in this application is generated in the RRC306.

[0348] As an example, the first report in this application is generated in the RRC306.

[0349] As an example, the second report in this application is generated in the RRC306.

[0350] As an example, the first RRC message in this application is generated in RRC306.

[0351] As an example, the second RRC configuration in this application is generated in RRC306.

[0352] As an example, the first PDCCH in this application is generated in the PHY301 or the PHY351.

[0353] As an example, the second PDCCH in this application is generated in the PHY301 or the PHY351.

[0354] As an example, the L2 layer 305 or 355 belongs to a higher layer.

[0355] As an example, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

[0356] Example 4

[0357] Example 4 illustrates a hardware module schematic diagram of a communication device according to an embodiment of this application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0358] 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, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0359] The second communication device 410 includes a controller / processor 475, a memory 476, a data source 477, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0360] 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 or from the data source 477 are provided to the controller / processor 475. The core network and data source 477 represent all protocol layers above the L2 layer. The controller / processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation for 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 FEC (Forward Error Correction) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying), M-PSK (M-Phase Shift Keying), M-QAM (M-Quadrature Amplitude Modulation)). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based precoding 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 IFFT (Inverse Fast Fourier Transform) 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.

[0361] 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 FFT (Fast Fourier Transform) 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 first 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 higher-layer data packets from the second communication device 410. 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.

[0362] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, upper-layer data packets are provided to the controller / processor 459 using a data source 467. 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 the logical and transport channels, 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.

[0363] 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 function. The controller / processor 475 implements the L2 layer function. The controller / processor 475 may be associated with a memory 476 storing 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 the upper-layer data packets from the first communication device 450. Upper-layer data packets from the controller / processor 475 can be provided to the core network or all protocol layers above the L2 layer, and various control signals can also be provided to the core network or L3 for L3 processing.

[0364] 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 an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; transmits a PRACH on a first random access resource for the on-demand SIB1 transmission; monitors a RAR in response to transmitting the PRACH; monitors the on-demand SIB1 on the first cell within a first time window in response to receiving the RAR; transmits a first report on a second cell, the first report including either a first information block or a second information block for the first cell; wherein, whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 is received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0365] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; transmitting a PRACH on a first random access resource for the on-demand SIB1 transmission; monitoring a RAR in response to transmitting the PRACH; monitoring the on-demand SIB1 on the first cell within a first time window in response to receiving the RAR; and transmitting a first report on a second cell, the first report including either a first information block or a second information block for the first cell; wherein whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0366] As one embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 at least: transmits an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; receives a PRACH on a first random access resource for the on-demand SIB1 transmission; transmits a RAR in response to receiving the PRACH; and transmits the on-demand SIB1 on the first cell within a first time window in response to transmitting the RAR; wherein a first report is transmitted on a second cell, the first report including either a first information block or a second information block for the first cell; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0367] or,

[0368] Receive a first report on the second cell, the first report being for the first cell including either a first information block or a second information block;

[0369] In this process, an SSB is received on a first cell, the SSB indicating on-demand SIB1 transmission; a PRACH is sent on a first random access resource for the on-demand SIB1 transmission; a RAR is monitored in response to the PRACH transmission; the on-demand SIB1 is monitored on the first cell within a first time window in response to the RAR reception; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0370] As one embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: transmitting an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; receiving a PRACH on a first random access resource for the on-demand SIB1 transmission; transmitting a RAR in response to receiving the PRACH; and transmitting the on-demand SIB1 on the first cell within a first time window in response to transmitting the RAR; wherein a first report is transmitted on a second cell, the first report including either a first information block or a second information block for the first cell; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0371] or,

[0372] Receive a first report on the second cell, the first report being for the first cell including either a first information block or a second information block;

[0373] In this process, an SSB is received on a first cell, the SSB indicating on-demand SIB1 transmission; a PRACH is sent on a first random access resource for the on-demand SIB1 transmission; a RAR is monitored in response to the PRACH transmission; the on-demand SIB1 is monitored on the first cell within a first time window in response to the RAR reception; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0374] As an example, the first communication device 450 corresponds to the first node in this application.

[0375] As an example, the second communication device 410 corresponds to the second node in this application.

[0376] As an example, the first communication device 450 is a user equipment.

[0377] As an example, the first communication device 450 is a Layer 3 relay node.

[0378] As an example, the first communication device 450 is an RSU (Road Side Unit).

[0379] As one embodiment, the second communication device 410 is a base station.

[0380] As one embodiment, the second communication device 410 is a base station distribution unit.

[0381] As one embodiment, the second communication device 410 is a piece of code in the distribution unit of a base station.

[0382] As one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, or the controller / processor 459 is used to receive the SSB in this application.

[0383] As one embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, or the controller / processor 475 is used to transmit the SSB in this application.

[0384] As one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmitter processor 457, the transmitter processor 468, or the controller / processor 459 is used to transmit the PRACH in this application.

[0385] As one embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna receiver processor 472, the receiver processor 470, or the controller / processor 475 is used to receive PRACH in this application.

[0386] As one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiver processor 458, the receiver processor 456, or the controller / processor 459 is used to receive the RAR in this application.

[0387] As one embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, or the controller / processor 475 is used to transmit the RAR in this application.

[0388] As one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, or the controller / processor 459 is used to receive the on-demand SIB1 in this application.

[0389] As one embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, or the controller / processor 475 is used to transmit the on-demand SIB1 in this application.

[0390] As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmitter processor 457, the transmitter processor 468, or the controller / processor 459 is used to transmit the first report in this application.

[0391] As an example, at least one of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, or the controller / processor 475 is used to receive the first report in this application.

[0392] As one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmitter processor 457, the transmitter processor 468, or the controller / processor 459 is used to transmit the second report in this application.

[0393] As one embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, or the controller / processor 475 is used to receive the second report in this application.

[0394] As one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, or the controller / processor 459 is used to receive the first RRC message in this application.

[0395] As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, or the controller / processor 475 is used to transmit the first RRC message in this application.

[0396] As one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiver processor 458, the receiver processor 456, or the controller / processor 459 is used to receive the second RRC configuration in this application.

[0397] As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, or the controller / processor 475 is used to transmit the second RRC configuration in this application.

[0398] As one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiver processor 458, the receiver processor 456, or the controller / processor 459 is used to receive the first PDCCH in this application.

[0399] As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, or the controller / processor 475 is used to transmit the first PDCCH in this application.

[0400] As one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiver processor 458, the receiver processor 456, or the controller / processor 459 is used to receive the second PDCCH in this application.

[0401] As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, or the controller / processor 475 is used to transmit the second PDCCH in this application.

[0402] Example 5

[0403] Example 5 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in Figure 5. In Figure 5, the first node N51 and the first transceiver N52, and the second transceiver N53 communicate via an air interface. It should be noted that the order in this example does not limit the signal transmission order or the order of implementation in this application. In Figure 5, the steps included in the dashed box S501 are optional.

[0404] For the first node N51, in step S511, an SSB is received on the first cell; in step S512, a second report is sent on the second cell; in step S513, a first RRC message is received on the second cell; in step S514, on-demand SIB1 is monitored on the first cell; and in step S515, a first report is sent on the second cell.

[0405] For the first transceiver N52, in step S521, an SSB is transmitted on the first cell; in step S522, an on-demand SIB1 is transmitted on the first cell.

[0406] For the second transceiver N53, in step S531, a second report is received on the second cell; in step S532, a first RRC message is sent on the second cell; and in step S533, a first report is received on the second cell.

[0407] In Example 5, a first node receives an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; transmits a PRACH on a first random access resource for the on-demand SIB1 transmission; monitors a RAR in response to transmitting the PRACH; monitors the on-demand SIB1 on the first cell within a first time window in response to receiving the RAR; and transmits a first report on a second cell, the first report including either a first information block or a second information block for the first cell; wherein, whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information... The first information block indicates either plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell; a first RRC message is received on the second cell, the first RRC message indicating that the CGI of the first cell is reported; wherein, the first report is a response to the first RRC message; a second report is sent on the second cell, the second report indicating at least one of the channel quality of the first cell and the first cell supporting the on-demand SIB1 transmission; wherein, the channel quality of the first cell is obtained by measurement for the SSB; the second report is used to trigger the first report.

[0408] In embodiment 5, the first node N51 and the first transceiver N52 transmit through the first cell; the first node N51 and the second transceiver N53 transmit through the second cell.

[0409] As an example, the first node N51 is the first node in this application.

[0410] As an example, the first cell and the second cell belong to the same gNB (New Radio Node B) - DU (Distributed Unit).

[0411] As a sub-implementation of the above embodiments, the first transceiver N52 and the second transceiver N53 are co-located.

[0412] As a sub-example of the above embodiments, the first transceiver N52 and the second transceiver N53 belong to the same Transmit / Receive Point (TRP).

[0413] As an example, the first cell and the second cell belong to different gNB-DUs.

[0414] As a sub-implementation of the above embodiments, the different gNB-DUs belong to the same gNB-CU (Central Unit).

[0415] As a sub-implementation of the above embodiments, the different gNB-DUs belong to different gNB-CUs.

[0416] As a sub-implementation of the above embodiments, the first transceiver N52 and the second transceiver N53 do not share the same address.

[0417] As a sub-example of the above embodiments, the first transceiver N52 and the second transceiver N53 belong to different transceiver points.

[0418] As a sub-example of the above embodiments, the first transceiver N52 and the second transceiver N53 belong to different base stations.

[0419] As an example, the first transceiver N52 belongs to the base station of the first cell.

[0420] As an example, the first transceiver N52 belongs to the transceiver point of the first cell.

[0421] As an example, the second transceiver N53 belongs to the base station of the second cell.

[0422] As an example, the second transceiver N53 belongs to the transceiver point of the second cell.

[0423] As an example, the second node in this application is the sustaining base station of the first cell.

[0424] As an example, the second node in this application is the transceiver point of the first cell.

[0425] As an example, the second node in this application is the sustaining base station of the second cell.

[0426] As an example, the second node in this application is the transceiver point of the second cell.

[0427] As an example, the second node in this application includes the first transceiver N52.

[0428] As an example, the second node in this application includes the second transceiver N53.

[0429] As an example, the second cell is the SpCell (Special Cell) of the first node.

[0430] As an example, the second cell is the PCell (Primary Cell) of the first node.

[0431] As an example, the second cell is the PSCell (Primary SCG (Secondary Cell Group) Cell) of the first node.

[0432] As an example, the second cell is the SCell (Secondary Cell) of the first node.

[0433] As an example, measurements for neighboring cells are configured in the second cell.

[0434] As an example, the second cell is configured to report measurements to neighboring cells.

[0435] As a sub-implementation of the two embodiments described above, the neighboring cell includes the first cell.

[0436] As a sub-implementation of the two embodiments described above, the specific methods and times for performing the measurements and reporting of the measurements for neighboring cells are referred to the 3GPP standard and will not be elaborated here.

[0437] As an example, the SSB is measured in the first cell to obtain the channel quality of the first cell.

[0438] As an example, in step S511, at least the synchronization signal included in the SSB is measured.

[0439] As an example, the channel quality of the first cell is RSRP (Reference Signal Received Power).

[0440] As an example, the channel quality of the first cell is SS-RSRP (RSRP based on synchronization signal).

[0441] As an example, the channel quality of the first cell is RSRQ (Reference Signal Received Quality).

[0442] As an example, the channel quality of the first cell is SS-RSRP (RSRQ based on synchronization signal).

[0443] As an example, the channel quality of the first cell is SINR (Signal to Interference plus Noise Ratio).

[0444] As an example, the channel quality of the first cell is SS-SINR (SINR based on synchronization signal).

[0445] As an example, the channel quality of the first cell is subjected to L3 (layer 3) filtering.

[0446] As an example, the second report is sent on the second cell.

[0447] As an example, the second report is a measurement report.

[0448] As an example, the second report is an L3 measurement report.

[0449] As an example, the second report indicates the channel quality of the first cell.

[0450] As an example, the second report includes the PCI of the first cell.

[0451] As an example, the second report indicates to the network that the first cell is a strong signal cell.

[0452] As an example, the second report indicates to the network that the first cell supports the on-demand SIB1 transmission.

[0453] As a sub-implementation of the above embodiment, the SSB indicates the transmission of the on-demand SIB1.

[0454] As an example, the second report only indicates the channel quality of the first cell.

[0455] As an example, the second report only indicates that the first cell supports the on-demand SIB1 transmission.

[0456] As an example, the second report simultaneously indicates the channel quality of the first cell and that the first cell supports the on-demand SIB1 transmission.

[0457] As a sub-implementation of the above embodiments, the first node maintains the first cell list, and the SSB indicates that the first cell is a cell in the first cell list.

[0458] As one embodiment, the second report is used to trigger the first report by: the first report being used to trigger the network to send the first RRC message, and the first RRC message triggering the first report.

[0459] As an example, in response to receiving the second report, the second transceiver N53 sends the first RRC message.

[0460] As an example, the PCI of the first cell is not in the Automatic Neighbour Relation Table maintained by the second node.

[0461] As an example, the first RRC message is received on the second cell, and the first RRC message indicates that the CGI of the first cell should be reported.

[0462] As an example, the first RRC message is RRCReconfiguration.

[0463] As an example, the first RRC message includes a ReportConfigNR (reporting configuration for NR) IE, which indicates reportCGI (reporting CGI).

[0464] As an example, the first RRC message includes measGapConfig, which configures the measurement gap; the first node receives at least one of the SSB and the on-demand SIB1 in the measurement gap.

[0465] As one embodiment, the first RRC message includes drx-Config, which configures active and inactive times; the first node receives at least one of the SSB and the on-demand SIB1 during the inactive time.

[0466] As an example, the SSB is received on the first-time resource.

[0467] As a sub-implementation of the above embodiments, the first time resource is the measurement gap.

[0468] As a sub-implementation of the above embodiments, the first time resource is the inactive time.

[0469] As an example, the on-demand SIB1 is requested in the second time resource request.

[0470] As one embodiment, the first RRC message configures the first time resource, and the first time resource includes the second time resource.

[0471] As a sub-implementation of the above embodiments, the advantage of the above method is that it saves signaling overhead.

[0472] As one embodiment, the first time resource and the second time resource are configured separately; wherein, the second time resource is a measurement gap configured by signaling other than the first RRC message, or an inactive time.

[0473] As a sub-implementation of the above embodiments, the durations of the first time resource and the second time resource are different.

[0474] As a sub-implementation of the above embodiments, the first time resource and the second time resource are orthogonal.

[0475] As a sub-implementation of the above embodiments, the advantage of the above method is that it has greater flexibility.

[0476] As one embodiment, requesting the on-demand SIB1 in the second time resource includes: requesting the on-demand SIB1 in the first cell in the second time resource.

[0477] As one embodiment, requesting the on-demand SIB1 in the second time resource includes: sending the PRACH on the first random access resource in the first cell in the second time resource.

[0478] As an example, requesting the on-demand SIB1 in the second time resource includes: monitoring the RAR in the first cell in the second time resource and receiving the RAR.

[0479] As one embodiment, requesting the on-demand SIB1 in the second time resource includes: monitoring the RAR in the first cell in the second time resource, but not receiving the RAR.

[0480] As one embodiment, the on-demand SIB1 is monitored in the first cell within the first time window; wherein the RAR is received within the second time resource, the second time resource including the first time window.

[0481] As an example, the SSB is received multiple times by the first node.

[0482] As an example, the broadcast information included in the SSB is read, and the broadcast information is used to generate the first report.

[0483] As an example, after receiving the first RRC message, the SSB is received and the broadcast information is read at the first time resource.

[0484] As an example, the first report is sent on the second cell; wherein the first report is a response to the first RRC message.

[0485] Example 6

[0486] Example 6 illustrates a signal processing flowchart in a first node according to an embodiment of this application, as shown in Figure 6.

[0487] In Example 6, for the first node N600, in step S601, the on-demand SIB1 is monitored on the first cell within the first time window; in step S602, it is determined whether the on-demand SIB1 is received within the first time window. If yes, step S603 is executed; if no, step S604 is executed; in step S603, a first report is sent, the first report including the first information block; in step S604, a first report is sent, the first report including the second information block.

[0488] Example 7

[0489] Example 7 illustrates another wireless signal transmission flowchart according to an embodiment of this application, as shown in Figure 7. In Figure 7, the first node N71 and the first transceiver N72, and the second transceiver N73 communicate via an air interface, respectively. It should be noted that the order in this example does not limit the signal transmission order or the order of implementation in this application. In Figure 7, the steps included in the dashed box F701 are optional.

[0490] For the first node N71, in step S711, the second RRC configuration is received; in step S712, a PRACH is sent on the first random access resource; in step S713, in response to sending the PRACH, the RAR is monitored.

[0491] For the first transceiver N72, in step S721, it receives PRACH on the first random access resource; in step S722, it sends RAR.

[0492] For the second transceiver N73, in step S731, the second RRC configuration is sent.

[0493] In Embodiment 7, the first node receives a second RRC configuration, which indicates a first cell list and a first resource set; the first resource set includes the first random access resource and the resource for monitoring and scheduling the first PDCCH of the RAR transmission; wherein the first resource set is applied to any cell in the first cell list, which includes the first cell.

[0494] The first node N71, the first transceiver N72, and the second transceiver N73 included in Embodiment 7 are the same as the first node N51, the first transceiver N52, and the second transceiver N53 in Embodiment 5, and will not be described again here.

[0495] As one embodiment, the first node receives the second RRC configuration; wherein, the second transceiver N73 transmits the second RRC configuration in the second cell.

[0496] As one embodiment, the second RRC configuration indicates a cell list, in each cell of the cell list supporting the on-demand SIB1 transmission. The first node receives the SSB and obtains a cell identifier. When the cell identifier indicates a cell in the cell list, the first node determines that the on-demand SIB1 transmission is supported in that cell.

[0497] As a sub-example of the above embodiment, the cell list includes at least one PCI, and the cell identifier is a PCI.

[0498] As a sub-example of the above embodiment, the cell list includes at least one ARFCN-ValueNR, and the cell identifier is ARFCN-ValueNR.

[0499] As an example, the on-demand SIB1 transmission is provided in each cell included in the first cell list.

[0500] As an example, in response to receiving the second RRC configuration, the first node maintains the first cell list.

[0501] As an example, the first node confirms that the first cell list includes the cell identifier of the first cell, and in the second report indicates that the first cell supports the on-demand SIB1 transmission.

[0502] As one embodiment, the second RRC configuration includes a system information block that indicates the first resource set.

[0503] As an example, the system information block is SIBx; where x is a positive integer greater than 25.

[0504] As an example, the second RRC configuration includes an uplink WUS (Wake Up Signal) configuration.

[0505] As an example, the second RRC configuration includes an uplink WUS configuration for requesting the on-demand SIB1.

[0506] As one embodiment, the first resource set is used to request the on-demand SIB1.

[0507] As one embodiment, the PRACH is transmitted on the first random access resource; wherein the first resource set includes the first random access resource.

[0508] As an example, the first random access resource overlaps with the frequency domain resources of the first cell in the frequency domain.

[0509] As one embodiment, the first random access resource overlaps with the first frequency domain resource in the frequency domain; wherein, the SSB occupies the first frequency domain resource.

[0510] As one embodiment, the first resource set includes the resources that monitor and schedule the first PDCCH for the RAR transmission.

[0511] As a sub-example of the above embodiments, the second RRC configuration includes the PDCCH-ConfigRAR IE.

[0512] As a sub-example of the above embodiments, the second RRC configuration includes the PDCCH-ConfigOD-SIB1-RAR IE.

[0513] As one embodiment, the first node N71 receives the first PDCCH on the resource that monitors and schedules the first PDCCH for the RAR transmission; wherein, the first transceiver N72 sends the first PDCCH.

[0514] As one embodiment, the first node N71 receives the RAR in the downlink allocation indicated by the first PDCCH; wherein the first transceiver N72 transmits the RAR on the first cell.

[0515] As one embodiment, the first node N71 receives the second PDCCH on the first cell; wherein, the first transceiver N72 transmits the second PDCCH on the first cell.

[0516] As one embodiment, the first node N71 receives the on-demand SIB1 on the first cell in the downlink allocation indicated by the second PDCCH; wherein the first transceiver N72 transmits the on-demand SIB1 on the first cell.

[0517] As an example, the second RRC configuration instructs the resources of the second PDCCH that monitor and schedule the on-demand SIB1 transmission.

[0518] As a sub-example of the above embodiments, the second RRC configuration includes the PDCCH-ConfigSIB1 IE.

[0519] As a sub-example of the above embodiment, the second RRC configuration includes the PDCCH-ConfigOD-SIB1IE.

[0520] Example 8

[0521] Example 8 illustrates a schematic diagram of the timing relationship between the RAR reception end time and the first time window according to an embodiment of this application, as shown in Figure 8.

[0522] As an example, the start time of the first time window is offset by M time units from the end time of the RAR reception; wherein M is equal to 0 or a positive integer greater than 0.

[0523] As one example, the time unit is a subframe.

[0524] As one example, the time unit is a time slot.

[0525] As an example, the time unit is a symbol.

[0526] As a sub-implementation of the above embodiments, the symbol is a single carrier symbol.

[0527] As a sub-implementation of the above embodiments, the symbol is a multicarrier symbol.

[0528] As a sub-implementation of the above embodiments, the symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0529] As an example, the reception end time of the RAR is the reception end time of the first PDSCH carrying the RAR.

[0530] As an example, the reception end time of the RAR is the end time of the symbols occupied by the first PDSCH carrying the RAR.

[0531] As an example, the reception end time of the RAR is the end time of the time slot in which the symbol occupied by the first PDSCH carrying the RAR is located.

[0532] As an example, the RAR implicitly indicates the start time of the first time window.

[0533] As an example, the start time of the first time window is the end time of the RAR reception.

[0534] As an example, the start time of the first time window is offset from the end time of the RAR reception by a positive integer number of time units.

[0535] As an example, the start time of the first time window is the start time of the first PDCCH occasion after the end time of reception of the RAR.

[0536] As an example, monitoring of the on-demand SIB1 begins at the start time of the first time window.

[0537] As an example, the second PDCCH for monitoring and scheduling the on-demand SIB1 transmission begins at the start time of the first time window.

[0538] Example 9

[0539] Example 9 illustrates a schematic diagram of a first frequency domain resource, a second frequency domain resource, and K subcarriers according to an embodiment of this application, as shown in Figure 9. In Figure 9, the length of the diagonally filled rectangle in the frequency domain represents the frequency domain resource for receiving the on-demand SIB1.

[0540] As one embodiment, the SSB occupies the first frequency domain resource; wherein, the first frequency domain resource belongs to the frequency domain resource of the first cell.

[0541] As an example, the first node obtains information about the first frequency domain resource through cell search, including the starting position and bandwidth of the first frequency domain resource.

[0542] As one embodiment, the first frequency domain resource includes a plurality of resource blocks (RBs) that are consecutive in the frequency domain.

[0543] As an example, a resource block includes 12 subcarriers.

[0544] As an example, the SSB indicates the location of the second frequency domain resource in the frequency domain.

[0545] As an example, the SSB indicates the starting position and bandwidth of the second frequency domain resource in the frequency domain.

[0546] As an example, the second frequency domain resource is a common resource block (CRB).

[0547] As one embodiment, the second frequency domain resource is the total resource block grid.

[0548] As an example, the bandwidth of the second frequency domain resource is the same as the bandwidth of the first frequency domain resource.

[0549] As an example, the SSB indicates the offset of the starting position of the second frequency domain resource relative to the starting position of the first frequency domain resource.

[0550] As an example, the SSB indicates that the starting position of the second frequency domain resource is offset by K subcarriers relative to the starting position of the first frequency domain resource, where K is an integer.

[0551] As an example, the SSB indicates that the starting position of the second frequency domain resource is offset by K resource blocks relative to the starting position of the first frequency domain resource, where K is an integer.

[0552] As an example, K is predefined.

[0553] As an example, K is fixed.

[0554] As an example, K is a positive integer.

[0555] As an example, K is a negative integer.

[0556] As an example, K is 0.

[0557] As an example, K is the first value.

[0558] As an example, K is the first value multiplied by 12.

[0559] As an example, the starting position of the first frequency domain resource is the lowest subcarrier of the lowest resource block included in the first frequency domain resource.

[0560] As an example, the starting position of the second frequency domain resource is the lowest subcarrier of the lowest resource block included in the second frequency domain resource.

[0561] As one embodiment, the starting position of the second frequency domain resource is the same as the starting position of the first frequency domain resource.

[0562] As an example, the frequency domain resources for receiving the on-demand SIB1 are a subset of the second frequency domain resources.

[0563] As an example, the second PDCCH indicates receiving the frequency domain resources of the on-demand SIB1.

[0564] As an example, the second PDCCH indicates the location of the frequency domain resource for receiving the on-demand SIB1 within the second frequency domain resource.

[0565] As an example, the second PDCCH indicates the starting position of the frequency domain resource of the on-demand SIB1 in the second frequency domain resource and the number of resource blocks included.

[0566] As an example, the first node determines the location for receiving the frequency domain resources of the on-demand SIB1 based on the SSB and the second PDCCH.

[0567] In case A of Figure 9, the first frequency domain resource and the second frequency domain resource have the same starting position and bandwidth.

[0568] In case B of Figure 9, the first frequency domain resource and the second frequency domain resource have the same bandwidth, and the starting position of the first frequency domain resource is offset relative to the starting position of the second frequency domain resource by K subcarriers; where K is an integer.

[0569] Example 10

[0570] Example 10 illustrates a schematic diagram of a first index and a first table according to an embodiment of this application, as shown in Figure 10.

[0571] In embodiment 10, the second PDCCH indicates a first index, which is applied to a first table to determine the time-domain resources for receiving the on-demand SIB1; wherein the first table is applied to the on-demand SIB1.

[0572] As an example, the first table is the default one.

[0573] As an example, the first table is predefined.

[0574] As an example, the first table is related to the frequency of the first cell.

[0575] As an example, the first table is selected based on the frequency of the first cell.

[0576] As an example, the first table is selected based on the ARFCN-ValueNR of the first cell.

[0577] As an example, the first table relates to the subcarrier spacing of the first cell.

[0578] As an example, the first table is configured.

[0579] As an example, the first table is indicated by the second RRC configuration.

[0580] As an example, the first table is used to determine the time-domain resources for receiving the on-demand SIB1.

[0581] As an example, the first table is used to determine the time-domain resources of the second PDSCH.

[0582] As an example, the first table indicates a time-domain resource by time slot offset, the starting symbol in the time slot, and the number of symbols included.

[0583] As an example, the second PDCCH indicates the receipt of the time-domain resources of the on-demand SIB1.

[0584] As an example, the second PDCCH indicates the first index, which is applied to a first table to determine the time-domain resources for receiving the on-demand SIB1.

[0585] As an example, the first index determines the time-domain resources for receiving the on-demand SIB1 from the first table.

[0586] As an example, determining the time-domain resources for receiving the on-demand SIB1 is determining the time-domain resources for receiving the second PDSCH, which carries the on-demand SIB1.

[0587] As an example, the first index is K2 bits, with a value from 0 to 2K2-1, where K2 is a positive integer; the first table consists of 2K2 rows, and each row in the first table indicates time-domain resource information; the value of the first index plus 1 indicates a row in the first table.

[0588] Specifically, K2 is 4 bits, the first table consists of 16 rows, each row indicating a time-domain resource information; the first index is 5, indicating the time-domain resource information indicated by the 6th row in the first table.

[0589] As one embodiment, the downlink allocation indicated by the second PDCCH includes a first index, the value of which indicates the slot offset of the slot occupied by the second PDSCH from the reference time.

[0590] As a sub-implementation of the above embodiments, the above method simplifies UE operation by directly indicating the time domain resources for receiving the on-demand SIB1 by indicating the time slot offset.

[0591] Figure 10 illustrates that the first table includes N rows, each row including three parameters: K0, S, and L; wherein K0 indicates the time slot offset, S indicates the starting symbol in a time slot, and L indicates the number of symbols included; wherein the first index indicates the 3rd row, corresponding to K0 being 1, S being 2, and L being 9, that is, the time domain resources occupied by the second PDSCH are the 2nd to 11th symbols in the first time slot after the reference time.

[0592] Example 11

[0593] Example 11 illustrates a structural block diagram of a processing apparatus in a first node according to an embodiment of the present application, as shown in Figure 11.

[0594] In Figure 11, the first node processing device 1100 includes a first receiver 1101 and a first transmitter 1102; the first node 1100 is a terminal, or the first node 1100 is a UE.

[0595] In embodiment 11, the first receiver 1101 receives an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; the first transmitter 1102 transmits a PRACH on a first random access resource for the on-demand SIB1 transmission; in response to transmitting the PRACH, the first receiver 1101 monitors a RAR; in response to receiving the RAR, the first receiver 1101 monitors the on-demand SIB1 on the first cell within a first time window; the first transmitter 1102 transmits a first report on a second cell, the first report for the first cell including either a first information block or a second information block; wherein, whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 is received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0596] As an example, when the on-demand SIB1 is received within the first time window, the first report includes the first information block; when the on-demand SIB1 is not received within the first time window, the first report includes the second information block.

[0597] As an example, the first receiver 1101 receives a first RRC message on the second cell, the first RRC message indicating that the CGI of the first cell should be reported; wherein, the first report is a response to the first RRC message.

[0598] As one embodiment, the first receiver 1101 receives a first RRC message on the second cell, the first RRC message indicating that the CGI of the first cell should be reported; wherein, the first report is a response to the first RRC message; the first transmitter 1102 sends a second report on the second cell, the second report indicating at least one of the channel quality of the first cell and the first cell supporting the on-demand SIB1 transmission; wherein, the channel quality of the first cell is obtained by measurement of the SSB; the second report is used to trigger the first report.

[0599] As one embodiment, the first receiver 1101 receives a second RRC configuration, the second RRC configuration indicating a first cell list and a first resource set; the first resource set includes the first random access resource and the resource for monitoring and scheduling the first PDCCH of the RAR transmission; wherein, the first resource set is applied to any cell in the first cell list, the first cell list including the first cell.

[0600] As an example, the start time of the first time window is offset by M time units from the end time of the RAR reception; wherein M is equal to 0 or a positive integer greater than 0.

[0601] As one embodiment, the SSB indicates PDCCH parameters, which indicate at least one of a control resource set and a search space; wherein, monitoring the on-demand SIB1 includes monitoring a second PDCCH in the resources indicated by the PDCCH parameters.

[0602] As one embodiment, the SSB indicates PDCCH parameters, which indicate at least one of a control resource set and a search space; wherein, monitoring the on-demand SIB1 includes monitoring a second PDCCH in the resources indicated by the PDCCH parameters; the second PDCCH indicates the position of the frequency domain resource receiving the on-demand SIB1 in a second frequency domain resource; wherein, the SSB occupies a first frequency domain resource; the SSB indicates that the starting position of the second frequency domain resource is offset from the starting position of the first frequency domain resource by K subcarriers, where K is an integer.

[0603] As one embodiment, the SSB indicates PDCCH parameters, which indicate at least one of a control resource set and a search space; wherein, monitoring the on-demand SIB1 includes monitoring a second PDCCH in the resources indicated by the PDCCH parameters; the second PDCCH indicates a first index, which is applied to a first table to determine the temporal resources for receiving the on-demand SIB1; wherein, the first table is applied to the on-demand SIB1.

[0604] As one embodiment, the SSB indicates that SIB1 may be sent periodically, or not sent, or the on-demand SIB1 may be sent.

[0605] As an example, the first node 1100 is the first node in this application.

[0606] As one embodiment, the first receiver 1101 includes a receiver 454 (including an antenna 452) as shown in Figure 4 of this application, a receiver processor 456, a multi-antenna receiver processor 458, and a controller / processor 459.

[0607] As one embodiment, the first receiver 1101 includes at least one of the receiver 454 (including antenna 452) in Figure 4 of this application, a receiver processor 456, a multi-antenna receiver processor 458, or a controller / processor 459.

[0608] As one embodiment, the first transmitter 1102 includes the transmitter 454 (including antenna 452) shown in Figure 4 of this application, the transmission processor 468, the multi-antenna transmission processor 457, and the controller / processor 459.

[0609] As one embodiment, the first transmitter 1102 includes at least one of the transmitter 454 (including antenna 452) in Figure 4 of this application, a transmission processor 468, a multi-antenna transmission processor 457, or a controller / processor 459.

[0610] Example 12

[0611] Example 12 illustrates a structural block diagram of a processing apparatus in a second node according to an embodiment of the present application, as shown in Figure 12.

[0612] In Figure 12, the second node processing device 1200 includes a first transceiver 1201, or the second node processing device 1200 includes a second transceiver 1202, or the second node processing device 1200 includes both the first transceiver 1201 and the second transceiver 1202. The second node 1200 is a base station, or a gNB DU (Distributed Unit).

[0613] In embodiment 12, the first transceiver 1201 transmits an SSB on a first cell, the SSB indicating on-demand SIB1 transmission; the first transceiver 1201 receives a PRACH on a first random access resource for the on-demand SIB1 transmission; in response to receiving the PRACH, the first transceiver 1201 transmits a RAR; in response to transmitting the RAR, the first transceiver 1201 transmits the on-demand SIB1 on the first cell within a first time window; wherein, a first report is transmitted on a second cell, the first report for the first cell including either a first information block or a second information block; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0614] or,

[0615] The second transceiver 1202 receives a first report on the second cell, the first report for the first cell including either a first information block or a second information block; wherein, an SSB is received on the first cell, the SSB indicating on-demand SIB1 transmission; a PRACH is sent on a first random access resource, the first random access resource for the on-demand SIB1 transmission; in response to the PRACH being sent, a RAR is monitored; in response to the RAR being received, the on-demand SIB1 is monitored on the first cell within a first time window; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 is received; the first information block indicates plmn-Identity or npn-Identity, the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

[0616] As one embodiment, the second node includes both the first transceiver 1201 and the second transceiver 1202.

[0617] As an example, when the on-demand SIB1 is received within the first time window, the first report includes the first information block; when the on-demand SIB1 is not received within the first time window, the first report includes the second information block.

[0618] As an example, the second transceiver 1202 sends a first RRC message on the second cell, the first RRC message indicating that the CGI of the first cell should be reported; wherein, the first report is a response to the first RRC message.

[0619] As one embodiment, the second transceiver 1202 sends a first RRC message on the second cell, the first RRC message indicating that the CGI of the first cell should be reported; wherein, the first report is a response to the first RRC message; the second transceiver 1202 receives a second report on the second cell, the second report indicating at least one of the channel quality of the first cell and the first cell supporting the on-demand SIB1 transmission; wherein, the channel quality of the first cell is obtained by measurement of the SSB; the second report is used to trigger the first report.

[0620] As one embodiment, the second transceiver 1202 sends a second RRC configuration, the second RRC configuration indicating a first cell list and a first resource set; the first resource set includes the first random access resource and the resource for monitoring and scheduling the first PDCCH of the RAR transmission; wherein, the first resource set is applied to any cell in the first cell list, the first cell list including the first cell.

[0621] As an example, the first transceiver 1201 transmits the first PDCCH.

[0622] As an example, the start time of the first time window is offset by M time units from the end time of the RAR reception; wherein M is equal to 0 or a positive integer greater than 0.

[0623] As one embodiment, the SSB indicates PDCCH parameters, which indicate at least one of a control resource set and a search space; wherein, monitoring the on-demand SIB1 includes monitoring a second PDCCH in the resources indicated by the PDCCH parameters.

[0624] As an example, the first transceiver 1201 transmits the second PDCCH.

[0625] As one embodiment, the SSB indicates PDCCH parameters, which indicate at least one of a control resource set and a search space; wherein, monitoring the on-demand SIB1 includes monitoring a second PDCCH in the resources indicated by the PDCCH parameters; the second PDCCH indicates the position of the frequency domain resource receiving the on-demand SIB1 in a second frequency domain resource; wherein, the SSB occupies a first frequency domain resource; the SSB indicates that the starting position of the second frequency domain resource is offset from the starting position of the first frequency domain resource by K subcarriers, where K is an integer.

[0626] As one embodiment, the SSB indicates PDCCH parameters, which indicate at least one of a control resource set and a search space; wherein, monitoring the on-demand SIB1 includes monitoring a second PDCCH in the resources indicated by the PDCCH parameters; the second PDCCH indicates a first index, which is applied to a first table to determine the temporal resources for receiving the on-demand SIB1; wherein, the first table is applied to the on-demand SIB1.

[0627] As an example, the second node 1200 is the second node in this application.

[0628] As one embodiment, the first transceiver 1201 includes a receiver 418 (including an antenna 420) as shown in Figure 4 of this application, a receiver processor 470, a multi-antenna receiver processor 472, and a controller / processor 475.

[0629] As one embodiment, the first transceiver 1201 includes at least one of the following in Figure 4 of this application: receiver 418 (including antenna 420), receiver processor 470, multi-antenna receiver processor 472, or controller / processor 475.

[0630] As one embodiment, the first transceiver 1201 includes a transmitter 418 (including an antenna 420) as shown in Figure 4 of this application, a transmission processor 416, a multi-antenna transmission processor 471, and a controller / processor 475.

[0631] As one embodiment, the first transceiver 1201 includes at least one of the transmitter 418 (including antenna 420) in Figure 4 of this application, the transmission processor 416, the multi-antenna transmission processor 471, and the controller / processor 475.

[0632] As one embodiment, the second transceiver 1202 includes a receiver 418 (including an antenna 420) as shown in Figure 4 of this application, a receiver processor 470, a multi-antenna receiver processor 472, and a controller / processor 475.

[0633] As one embodiment, the second transceiver 1202 includes at least one of the receiver 418 (including antenna 420) in Figure 4 of this application, a receiver processor 470, a multi-antenna receiver processor 472, or a controller / processor 475.

[0634] As one embodiment, the second transceiver 1202 includes a transmitter 418 (including an antenna 420) as shown in Figure 4 of this application, a transmission processor 416, a multi-antenna transmission processor 471, and a controller / processor 475.

[0635] As one embodiment, the second transceiver 1202 includes at least one of the transmitter 418 (including antenna 420) in Figure 4 of this application, a transmission processor 416, a multi-antenna transmission processor 471, and a controller / processor 475.

[0636] 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. Correspondingly, 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 first type of communication node or UE or terminal in this application includes, but is not limited to, mobile phones, tablets, laptops, network cards, low-power devices, eMTC (enhanced Machine Type Communication) devices, NB-IoT devices, vehicle communication devices, aircraft, drones, remote-controlled aircraft, and other wireless communication devices. The second type of communication node or base station or network-side equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, Transmission and Reception Points (TRPs), relay satellites, satellite base stations, airborne base stations, and testing equipment, such as transceivers simulating some functions of a base station, signaling testers, and other wireless communication equipment.

[0637] Those skilled in the art will understand that the present invention can 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 method used in a first node of wireless communication, characterized in that, include: Receive an SSB on the first cell, the SSB indicating on-demand SIB1 transmission; A PRACH is sent on a first random access resource for the on-demand SIB1 transmission. In response to sending the PRACH, monitor RAR; In response to receiving the RAR, the on-demand SIB1 is monitored on the first cell within the first time window; Send a first report on the second cell, the first report being for the first cell including either a first information block or a second information block; The first report includes either the first information block or the second information block, depending on whether the on-demand SIB1 is received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

2. The method in the first node according to claim 1, characterized in that, When the on-demand SIB1 is received within the first time window, the first report includes the first information block; when the on-demand SIB1 is not received within the first time window, the first report includes the second information block.

3. The method in the first node according to any one of claims 1 or 2, characterized in that, include Receive a first RRC message on the second cell, the first RRC message indicating that the CGI of the first cell should be reported; The first report is a response to the first RRC message.

4. The method in the first node according to claim 3, characterized in that, include: A second report is sent on the second cell, the second report indicating at least one of the channel quality of the first cell and the first cell supporting the on-demand SIB1 transmission; The channel quality of the first cell is obtained by measuring the SSB; the second report is used to trigger the first report.

5. The method in the first node according to any one of claims 1 to 4, characterized in that, include: Receive a second RRC configuration, the second RRC configuration indicating a first cell list and a first resource set; the first resource set includes the first random access resource and the resource for monitoring and scheduling the first PDCCH of the RAR transmission; The first resource set is applied to any cell in the first cell list, and the first cell list includes the first cell.

6. The method in the first node according to any one of claims 1 to 5, characterized in that, The start time of the first time window is offset by M time units from the end time of the RAR reception; Wherein, M is equal to 0 or a positive integer greater than 0.

7. The method in the first node according to any one of claims 1 to 6, characterized in that, The SSB indicates the PDCCH parameter, which indicates at least one of the control resource set and the search space; The monitoring of the on-demand SIB1 includes monitoring the second PDCCH in the resources indicated by the PDCCH parameters.

8. The method in the first node according to claim 7, characterized in that, The second PDCCH indicates the location of the frequency domain resources for receiving the on-demand SIB1 within the second frequency domain resources; Wherein, the SSB occupies the first frequency domain resource; the SSB indicates that the starting position of the second frequency domain resource is offset from the starting position of the first frequency domain resource by K subcarriers, where K is an integer.

9. The method in the first node according to claim 7 or 8, characterized in that, The second PDCCH indicates a first index, which is applied to a first table to determine the time-domain resources for receiving the on-demand SIB1; The first table is applied to the on-demand SIB1.

10. The method in the first node according to any one of claims 1 to 9, characterized in that, The SSB indicates that SIB1 may be sent periodically, or SIB1 may not be sent, or SIB1 may be sent as needed.

11. A method used in a second node for wireless communication, characterized in that, include: An SSB is sent on the first cell, the SSB indicating on-demand SIB1 transmission; Receive PRACH on a first random access resource, the first random access resource being for the on-demand SIB1 transmission; In response to receiving the PRACH, a RAR is sent; In response to sending the RAR, the on-demand SIB1 is sent on the first cell within the first time window; In this process, a first report is sent on the second cell, and the first report for the first cell includes either a first information block or a second information block; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 is received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell; or, Receive a first report on the second cell, the first report being for the first cell including either a first information block or a second information block; In this process, an SSB is received on a first cell, the SSB indicating on-demand SIB1 transmission; a PRACH is sent on a first random access resource for the on-demand SIB1 transmission; a RAR is monitored in response to the PRACH transmission; the on-demand SIB1 is monitored on the first cell within a first time window in response to the RAR reception; whether the first report includes the first information block or the second information block depends on whether the on-demand SIB1 has been received; the first information block indicates plmn-Identity or npn-Identity, and the second information block indicates noSIB1; the first cell is a neighboring cell of the second cell.

12. The method in the second node according to claim 11, characterized in that, When the on-demand SIB1 is received within the first time window, the first report includes the first information block; when the on-demand SIB1 is not received within the first time window, the first report includes the second information block.

13. The method in the second node according to any one of claims 11 or 12, characterized in that, include Send a first RRC message on the second cell, the first RRC message indicating that the CGI of the first cell should be reported; The first report is a response to the first RRC message.

14. The method in the second node according to claim 13, characterized in that, include: A second report is received on the second cell, the second report indicating at least one of the channel quality of the first cell and the first cell supporting the on-demand SIB1 transmission; The channel quality of the first cell is obtained by measuring the SSB; the second report is used to trigger the first report.

15. The method in the second node according to any one of claims 11 to 14, characterized in that, include: Send a second RRC configuration, which indicates a first cell list and a first resource set; the first resource set includes the first random access resource and the resource for monitoring and scheduling the first PDCCH of the RAR transmission; The first resource set is applied to any cell in the first cell list, and the first cell list includes the first cell.

16. The method in the second node according to any one of claims 11 to 15, characterized in that, The start time of the first time window is offset by M time units from the end time of the RAR reception; Wherein, M is equal to 0 or a positive integer greater than 0.

17. The method in the second node according to any one of claims 11 to 16, characterized in that, The SSB indicates the PDCCH parameter, which indicates at least one of the control resource set and the search space; The monitoring of the on-demand SIB1 includes monitoring the second PDCCH in the resources indicated by the PDCCH parameters.

18. The method in the second node according to claim 17, characterized in that, The second PDCCH indicates the location of the frequency domain resources for receiving the on-demand SIB1 within the second frequency domain resources; Wherein, the SSB occupies the first frequency domain resource; the SSB indicates that the starting position of the second frequency domain resource is offset from the starting position of the first frequency domain resource by K subcarriers, where K is an integer.

19. The method in the second node according to claim 17 or 18, characterized in that, The second PDCCH indicates a first index, which is applied to a first table to determine the time-domain resources for receiving the on-demand SIB1; The first table is applied to the on-demand SIB1.

20. The method in the second node according to any one of claims 11 to 19, characterized in that, The SSB indicates that SIB1 may be sent periodically, or SIB1 may not be sent, or SIB1 may be sent as needed.

21. A terminal, characterized in that, The terminal includes: one or more processors and memory; The memory is coupled to the one or more processors, the memory being used to store computer program code, the computer program code including computer instructions, the one or more processors invoking the computer instructions to cause the terminal to perform the method as described in any one of claims 1-10.

22. A base station, characterized in that, The base station includes: one or more processors and a memory; The memory is coupled to the one or more processors, the memory being used to store computer program code, the computer program code including computer instructions, the one or more processors invoking the computer instructions to cause the base station to perform the method as described in any one of claims 11 to 20.

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