Method, device and equipment for triggering cell to send SSB and / or SIB

Abstract

The invention discloses a method, device and equipment for triggering a cell to send SSB and / or SIB, and belongs to the technical field of communication, and the method comprises the steps that a terminal sends a first signal to a second cell; the terminal executes a target operation according to first information from a first cell and / or a second cell; wherein the first signal is used for triggering the second cell to execute adjustment related to a synchronization signal block SSB and / or a system information block SIB, and the first cell and the second cell are different cells.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a method, apparatus, and device for triggering a cell to send an SSB and / or an SIB. Background Art

[0002] In the related art, when the network side sends a Synchronization Signal Block (SSB), the terminal will calculate the position of Control Resource Set 0 (CORESET 0) based on the ssb-SubcarrierOffset and other parameters included in the Master Information Block (MIB) of the Physical Broadcast Channel (PBCH) carried in the SSB, and then blindly detect the scheduling information of the Remaining Minimum SI (RMSI) in the Type 0 Common Search Space (CSS) corresponding to CORESET0 using the System Information Radio Network Temporary Identifier (SI-RNTI). However, in the on-demand SIB scenario, for energy saving, the SIB may not be sent. Therefore, in the energy-saving scenario, the terminal itself does not need to blindly detect the scheduling information of the SIB.

[0003] For the solution where the terminal sends an uplink signal to trigger an energy-saving cell to send a System Information Block (SIB), the behavior of the terminal after sending the uplink signal and the behavior of the network side after receiving the signal have not been defined. Therefore, the terminal may not be able to accurately receive the SSB and / or the SIB. Summary of the Invention

[0004] Embodiments of this application provide a method, apparatus, and device for triggering a cell to send an SSB and / or an SIB, which are used to solve the problem that the terminal cannot accurately receive the SSB and / or the SIB.

[0005] In a first aspect, a method for triggering a cell to send an SSB and / or an SIB is provided, which is executed by a terminal. The method includes:

[0006] The terminal sends a first signal to a second cell;

[0007] The terminal performs a target operation according to first information from the first cell and / or the second cell;

[0008] Wherein, the first signal is used to trigger the second cell to perform adjustments related to the Synchronization Signal Block (SSB) and / or the System Information Block (SIB), and the first cell and the second cell are different cells;

[0009] The target operation includes at least one of the following:

[0010] Receiving the SSB and / or SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed by the protocol;

[0011] Receiving the SSB and / or SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried by the first signal feedback information;

[0012] Receiving the SSB and / or SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal;

[0013] Starting to monitor the Type 0 Physical Downlink Control Channel (PDCCH) associated with the target SSB, where the target SSB is the SSB associated with the Random Access Channel Occasion (RO) of sending the first signal;

[0014] Blind detecting the scheduling information of the Remaining Minimum System Information (RMSI) in the Type 0 Common Search Space (CSS) corresponding to the Control Resource Set 0 (CORESET 0) using the System Information Radio Network Temporary Identity (SI-RNTI);

[0015] Blind detecting the Downlink Control Information (DCI 1_0) in the Type 0 CSS corresponding to the CORESET 0;

[0016] Receiving the first signal feedback information at a second position, where the second position is determined according to the configuration of the first signal or agreed by the protocol;

[0017] Skipping the detection of the DCI scrambled by the Random Access RNTI;

[0018] Detecting the DCI scrambled by the Random Access RNTI;

[0019] Send the first signal again under the first condition, where the first condition includes: the terminal does not receive the second message Msg2 for contention-based random access within the random access response (RAR) time window;

[0020] Do not send a physical uplink shared channel (PUSCH) transmission scheduled by the RAR uplink grant after receiving a physical downlink shared channel (PDSCH) carrying an RAR message;

[0021] After receiving Msg2, do not send the third message Msg3 for contention-based random access;

[0022] Receive the on-demand sent SIB within type 1 CSS;

[0023] Receive the on-demand sent SIB within the target search space, where the target search space is a search space dedicated to receiving the on-demand sent SIB;

[0024] Determine the validity of the RO of the second cell according to the time division duplex (TDD) configuration information of the second cell, where the TDD configuration information is from the first cell;

[0025] Determine the valid uplink timing for sending the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is from the first cell.

[0026] In a second aspect, a method for triggering a cell to send an SSB and / or SIB is provided, which is executed by a second cell, and the method includes:

[0027] The second cell receives a first signal sent by a terminal; the first signal is used to trigger the second cell to perform adjustments related to the SSB and / or SIB;

[0028] The second cell performs the adjustments related to the SSB and / or SIB.

[0029] In a third aspect, a method for triggering a cell to send an SSB and / or SIB is provided, which is executed by a first cell, and the method includes:

[0030] The first cell sends first information to the terminal, where the first information is used for the terminal to perform a target operation after sending the first signal to the second cell; the first signal is used to trigger the second cell to perform adjustments related to the synchronization signal block SSB and / or the system information block SIB.

[0031] Fourthly, a device for triggering a cell to send an SSB and / or an SIB is provided, which is applied to a terminal and includes:

[0032] A first transceiver unit, configured to send a first signal to a second cell;

[0033] A first processing unit, configured to perform a target operation according to first information from a first cell and / or the second cell;

[0034] Wherein, the first signal is used to trigger the second cell to perform an adjustment related to an SSB and / or an SIB, and the first cell and the second cell are different cells;

[0035] The target operation includes at least one of the following:

[0036] Receiving the SSB and / or the SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed by a protocol;

[0037] Receiving the SSB and / or the SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried by the first signal feedback information;

[0038] Receiving the SSB and / or the SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal;

[0039] Starting to monitor type 0 PDCCH associated with a target SSB, where the target SSB is the SSB associated with the RO that sends the first signal;

[0040] Using SI-RNTI to blindly detect the scheduling information of RMSI within type 0 CSS corresponding to control resource set 0;

[0041] Blindly detecting DCI 1_0 within type 0 CSS corresponding to control resource set 0;

[0042] Receiving first signal feedback information at a second position, where the second position is determined according to the configuration of the first signal or agreed by a protocol;

[0043] Skipping the detection of DCI scrambled by a random access RNTI;

[0044] Detecting DCI scrambled by a random access RNTI;

[0045] Resending the first signal under a first condition, where the first condition includes: the terminal does not receive a second message Msg2 based on contention-based random access within the RAR time window;

[0046] Do not send a PUSCH transmission scheduled by a RAR uplink grant after receiving a PDSCH carrying a RAR message;

[0047] After receiving Msg2, do not send a third message Msg3 based on contention-based random access;

[0048] Receive on-demand sent SIB within type 1 CSS;

[0049] Receive on-demand sent SIB within a target search space, where the target search space is a search space dedicated to receiving the on-demand sent SIB;

[0050] Determine the validity of the RO of the second cell according to the time-division duplex (TDD) configuration information of the second cell, where the TDD configuration information is sourced from the first cell;

[0051] Determine a valid uplink timing for sending the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is sourced from the first cell.

[0052] In a fifth aspect, there is provided an apparatus for triggering a cell to send an SSB and / or SIB, applied to a second cell, including:

[0053] A second transceiver unit, configured to receive a first signal sent by a terminal; the first signal is used to trigger the second cell to perform adjustments related to the SSB and / or SIB,

[0054] A second processing unit, configured to perform the adjustments related to the SSB and / or SIB.

[0055] In a sixth aspect, there is provided an apparatus for triggering a cell to send an SSB and / or SIB, applied to a first cell, including:

[0056] A fifth transceiver unit, configured to send a first message to a terminal, where the first message is used for the terminal to perform a target operation after sending a first signal to the second cell; the first signal is used to trigger the second cell to perform adjustments related to the synchronization signal block (SSB) and / or the system information block (SIB).

[0057] In a seventh aspect, there is provided a terminal, which includes a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0058] In an eighth aspect, a terminal is provided, including a processor and a communication interface. The communication interface is configured to send a first signal to a second cell. The processor is configured to perform a target operation according to first information from a first cell and / or the second cell. The first signal is used to trigger the second cell to perform an adjustment related to a synchronization signal block (SSB) and / or a system information block (SIB). The first cell and the second cell are different cells.

[0059] The target operation includes at least one of the following:

[0060] Receiving the SSB and / or SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed by a protocol;

[0061] Receiving the SSB and / or SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried in the first signal feedback information;

[0062] Receiving the SSB and / or SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal;

[0063] Starting to monitor a type 0 physical downlink control channel (PDCCH) associated with a target SSB, where the target SSB is the SSB associated with the random access opportunity (RO) of sending the first signal;

[0064] Blind detecting scheduling information of the remaining minimum system information (RMSI) using a system information radio network temporary identity (SI-RNTI) within a type 0 common search space (CSS) corresponding to control resource set 0;

[0065] Blind detecting downlink control information (DCI) 1_0 within the type 0 CSS corresponding to control resource set 0;

[0066] Receiving first signal feedback information at a second position, where the second position is determined according to the configuration of the first signal or agreed by a protocol;

[0067] Skipping the detection of DCI scrambled by a random access radio network temporary identity (RNTI);

[0068] Detecting DCI scrambled by a random access RNTI;

[0069] Resending the first signal under a first condition, where the first condition includes: the terminal does not receive a second message (Msg2) based on contention-based random access within a random access response (RAR) time window;

[0070] Do not transmit a Physical Uplink Shared Channel (PUSCH) transmission scheduled by a Random Access Response (RAR) uplink grant after receiving a Physical Downlink Shared Channel (PDSCH) carrying an RAR message;

[0071] After receiving Msg2, do not transmit a third message Msg3 based on contention-based random access;

[0072] Receive on-demand sent System Information Blocks (SIBs) within Type 1 CSS;

[0073] Receive on-demand sent SIBs within a target search space, where the target search space is a search space dedicated to receiving the on-demand sent SIBs;

[0074] Determine the validity of the Random Access Opportunity (RO) of the second cell according to the Time Division Duplex (TDD) configuration information of the second cell, where the TDD configuration information is sourced from the first cell;

[0075] Determine a valid uplink timing for transmitting the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is sourced from the first cell.

[0076] In a ninth aspect, a network-side device is provided. The network-side device is a second cell, and the network-side device includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0077] In a tenth aspect, a network-side device is provided. The network-side device is a second cell and includes a processor and a communication interface. The communication interface is used to receive a first signal sent by a terminal. The first signal is used to trigger the second cell to perform adjustments related to Synchronization Signal Block (SSB) and / or System Information Block (SIB). The processor is used to perform the adjustments related to SSB and / or SIB.

[0078] In an eleventh aspect, a network-side device is provided. The network-side device is a first cell, and the network-side device includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the third aspect are implemented.

[0079] In a twelfth aspect, a network-side device is provided. The network-side device is a second cell and includes a processor and a communication interface. The communication interface is used to send first information to a terminal. The first information is used for the terminal to perform a target operation after sending a first signal to the second cell. The first signal is used to trigger the second cell to perform adjustments related to Synchronization Signal Block (SSB) and / or System Information Block (SIB).

[0080] In a thirteenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect are implemented.

[0081] In a fourteenth aspect, a communication system is provided, including: a terminal and a network-side device. The terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect or the third aspect.

[0082] In a fifteenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or the method described in the second aspect, or the method described in the third aspect.

[0083] In a sixteenth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method for triggering a cell to send an SSB and / or an SIB described in the first aspect, or the steps of the method for triggering a cell to send an SSB and / or an SIB described in the second aspect, or the steps of the method for triggering a cell to send an SSB and / or an SIB described in the third aspect.

[0084] In the embodiments of the present application, the UE behavior after the UE sends the first signal, and the direction of the network side to send the SIB are provided. The direction of sending the SIB is related to the RO of the UE sending the first signal, which can avoid the network side from sending the SIB omnidirectionally and improve the accuracy of the UE receiving the SIB. The present application can carry the SIB sending status information of the target cell in the SSB to help the UE determine whether it can trigger the target cell to send the SIB by sending the first signal. Description of the Drawings

[0085] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0086] Figure 2 is a schematic diagram of the association between the SSB and the RO in the embodiments of the present application;

[0087] Figure 3 is one of the flow diagrams of the method for triggering a cell to send an SSB and / or an SIB in the embodiments of the present application;

[0088] Figure 4 is one of the schematic diagrams of the mapping relationship between the SSB and the RO in the embodiments of the present application;

[0089] Figure 5 It is the second schematic diagram of the mapping relationship between the SSB and the RO in the embodiment of the present application;

[0090] Figure 6 It is the third schematic diagram of the mapping relationship between the SSB and the RO in the embodiment of the present application;

[0091] Figure 7 It is the fourth schematic diagram of the mapping relationship between the SSB and the RO in the embodiment of the present application;

[0092] Figure 8 It is the fifth schematic diagram of the mapping relationship between the SSB and the RO in the embodiment of the present application;

[0093] Figure 9 It is the first schematic diagram of the process for the terminal to receive the SIB in the embodiment of the present application;

[0094] Figure 10 It is the second schematic diagram of the process for the terminal to receive the SIB in the embodiment of the present application;

[0095] Figure 11 It is the second schematic diagram of the process of the method for triggering a cell to send an SSB and / or an SIB in the embodiment of the present application;

[0096] Figure 12 It is the third schematic diagram of the process of the method for triggering a cell to send an SSB and / or an SIB in the embodiment of the present application;

[0097] Figure 13 It is the first schematic diagram of the structure of the device for triggering a cell to send an SSB and / or an SIB in the embodiment of the present application;

[0098] Figure 14 It is the second schematic diagram of the structure of the device for triggering a cell to send an SSB and / or an SIB in the embodiment of the present application;

[0099] Figure 15 It is the third schematic diagram of the structure of the device for triggering a cell to send an SSB and / or an SIB in the embodiment of the present application;

[0100] Figure 16 It is the schematic diagram of the structure of the communication device in the embodiment of the present application;

[0101] Figure 17 It is the schematic diagram of the structure of the terminal in the embodiment of the present application;

[0102] Figure 18 It is the schematic diagram of the structure of the network-side device in the embodiment of the present application. Detailed implementation manners

[0103] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0104] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0105] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0106] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes and uses the NR term in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0107] Figure 1The block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0108] When explaining the embodiments of this application, some concepts used in the following description will be explained first.

[0109] I. RACH

[0110] (1) Mapping rule of SSB to RO in 5G NR:

[0111] The configuration parameters of the Physical Random Access Channel (PRACH) resources and SSB-RO are configured in the System Information Block SIB1. In NR, a cell can configure multiple Frequency Division Multiplex (FDM) Physical Random Access Channel transmission opportunities (PRACH transmission occasion, RO) at a time domain position for transmitting PRACH. At a certain moment, the number of ROs that can perform FDM can be: {1, 2, 4, 8}, which is configured and determined by the high-layer parameter msg1-FDM.

[0112] The random access preamble can only be transmitted on the time domain resources configured by the parameter PRACH configuration index (PRACHConfigurationIndex) and the frequency domain resources configured by the parameter Msg1-FDM. PRACH frequency domain resource n RA ∈ {0, 1, …, M - 1}, where M is equal to the higher layer parameter Msg1-FDM. At the initial access, the PRACH frequency domain resource n RA is numbered in ascending order starting from the lowest frequency RO resource within the initial active uplink bandwidth part, otherwise, the PRACH frequency domain resource n RA is numbered in ascending order starting from the lowest frequency RO resource within the active uplink bandwidth part. For example, in Figure 2 , the number of ROs for FDM at a certain moment is 8 (msg1-FDM = 8), and the RO resources are numbered as RO#0 to RO#7 in ascending order of frequency.

[0113] In NR, there is an association relationship between the RO and the actually transmitted SSB. The RO is associated with the SSB in the order of frequency domain (from low frequency to high frequency) first and then time domain. One SSB may be associated with multiple consecutive ROs, or multiple SSBs may be associated with 1 RO (in this case, different SSBs correspond to different preambles), which is configured by the network through the parameter "ssb-perRACH-OccasionAndCB-PreamblesPerSSB".

[0114] The base station can use different beams to transmit different SSBs, where the number of SSBs is configured by the parameter "ssb-PositionsInBurst". For FR2, the maximum number of SSBs is 64. The UE selects the RO / "RO and preamble combination" associated with the SSB with better signal according to the strength of the received downlink beam / SSB to send Msg1. In this way, the network side device can determine the SSB selected by the UE according to the RO / "RO and preamble combination" of the received preamble. And send Msg2 on the downlink beam corresponding to the SSB to ensure the reception quality of the downlink signal.

[0115] Before the UE sends a PRACH, it first selects an SSB with an RSRP higher than the threshold based on the reference signal received power (RSRP) of the received beam (or SSB); if there are multiple SSBs with RSRP higher than the threshold, the terminal can select any SSB with RSRP higher than the threshold; when there is no SSB with RSRP higher than the threshold, the UE selects an SSB based on implementation.

[0116] Based on the configuration of the network (NW), the UE obtains the correspondence between SSBs and ROs. After selecting an SSB, the RO corresponding to the selected SSB is used as the RO for sending PRACH / Preamble / Msg1. If the selected SSB is associated with multiple ROs, the terminal can select one of them to send PRACH / Preamble / Msg1.

[0117] II. SIB1

[0118] (1) Type0-PDCCH common search space set (CSS set):

[0119] This search space set is used to monitor the SIB1 system message, corresponding to the DCI scrambled with SI-RNTI in the primary cell of the master cell group (MCG), configured by "IE: pdcch-ConfigSIB1" in the signaling MIB or by "IE: serachSpaceZero" in the signaling PDCCH-ConfigCommon, or configured by "IE: searchSpaceZero" or "searchSpaceSIB1" in the signaling PDCCH-ConfigCommon.

[0120] (2) SSB and CORESET 0

[0121] The multiplexing patterns of SSB and CORESET 0 are divided into three types: Pattern 1 (Pattern 1) is time-division multiplexing (the frequency domain range of CORESET 0 includes SSB), and Pattern 2 and Pattern 3 are frequency-division multiplexing (CORESET 0 and SSB are in the same system frame). The difference between Pattern 2 and Pattern 3 is that in the time domain, CORESET 0 of Pattern 2 is ahead of the SSB in position. After the UE decodes the SSB, it can know the specific time-frequency resource position to blindly detect the scheduling information of SIB1.

[0122] (3) SIB1

[0123] After detecting the PBCH, the terminal has completed downlink synchronization. Before performing uplink synchronization, the terminal needs to further receive SIB1 (System Information Block Type 1) to obtain the configuration information related to uplink synchronization.

[0124] SIB1 is transmitted on the PDSCH and scheduled by the PDCCH, and the resource allocation range of the PDSCH is within the frequency range of the initial BWP; specifically:

[0125] 1) PDCCH time-frequency resource allocation of SIB1:

[0126] a: The PDCCH of SIB1 is mapped within the CSS of type 0-PDCCH;

[0127] b: In the frequency domain, the CSS of Type 0-PDCCH is mapped in CORESET 0, and the frequency range of CORESET 0 is exactly the same as that of the initial bandwidth part (Bandwidth Part, BWP);

[0128] c: The lower 4 bits of the signaling "pdcch-ConfigSIB1" carried in the PBCH indicate the configuration of the type 0-PDCCH CSS, and the upper 4 bits indicate the configuration of CORESET 0;

[0129] 2) PDSCH time-frequency resource allocation of SIB1:

[0130] a: The regular PDSCH uses the TDRA table configured by Radio Resource Control (RRC), and the time-domain resource allocation is indicated by the index in the table by the PDCCCH. However, since the RRC connection has not been established when the UE receives the SIB1 PDSCH, a default TDRA needs to be defined.

[0131] b: The three multiplexing modes of CORESET0 and SSB respectively correspond to three default time-domain resource allocation (Time DomainResource Assignment, TDRA) tables;

[0132] c: In the frequency domain, SIB1 performs frequency-domain resource allocation within the initial access bandwidth range and uses resource allocation type type 1.

[0133] III. SSB

[0134] (1) Cell-defining / non cell-defining SSB:

[0135] In the NR system, the cell-defining SSB (CD-SSB) is defined as the SSB associated with SIB1 (i.e., RMSI). SIB1 defines the scheduling information of other SIBs and contains information for the initial access of the terminal. The frequency position of the CD-SSB must be on the system synchronization raster.

[0136] The non cell-defining SSB (NCD-SSB) is defined as the SSB not associated with SIB1. The NCD-SSB can be used for secondary cell synchronization or as a measurement signal configured for the terminal. The NCD-SSB does not necessarily lie on the system synchronization raster. If the NCD-SSB is on the system synchronization raster, it can indicate the GSFN of the CD-SSB through the information it carries.

[0137] (2) Subcarrier offset value k SSB :

[0138] The subcarrier offset information field (ssb-SubcarrierOffset) of the SSB is used to indicate the value k of the subcarrier offset between the SSB and CORESET #0. SSB . The range of this offset includes 0 - 23 subcarriers and 0 - 11 subcarriers, which are represented by 5 bits (4 bits are indicated by ssb-SubcarrierOffset, and 1 bit of the highest bit is indicated by the Physical (PHY) layer of the PBCH) and 4 bits respectively, corresponding to the frequency ranges FR1 and FR2. 4 bits can represent 16 values, and only 12 (0 - 11) are used for k in FR2. 5 bits can represent 32 values, and only 24 (0 - 23) are used for k in FR1. To avoid waste of the remaining values, 3GPP divides k into two parts: normal k SSB (in FR1, k SSB is 0 - 23; in FR2, k SSB is 0 - 11) and abnormal k SSB (in FR1, k SSB is 0 - 23; in FR2, k SSB is 0 - 11) and abnormal k SSB .

[0139] In FR1, if k SSB> 23, or, in FR2, if kSSB > 11, both belong to abnormal kSSB, indicating that there is no Type 0 CSS for the SSB, that is, the current SSB is not associated with SIB1. However, the role of abnormal kSSB is not limited to this. To enable the UE to find the Cell Defining SSB as soon as possible, the abnormal kSSB can also be used as an index to combine with the RMSI PDCCH configuration to indicate the Global synchronization channel number (GSCN) of the next SSB.

[0140] When k SSB > 23 (FR1) or k SSB > 11 (FR2), some of the values in this range can be used to indicate the GSCN of the CD-SSB. As shown in Table 1 and Table 2:

[0141] Table 1: FR1

[0142]

[0143] Table 2: FR2

[0144]

[0145] Among them, when the value of k SSB = 31 (FR1) or k SSB = 15 (FR2), the UE considers that there is no CD-SSB within a certain GSCN range.

[0146] Next, in combination with the accompanying drawings, through some embodiments and their application scenarios, the method, apparatus, and device for triggering a cell to send an SSB and / or SIB provided by the embodiments of the present application will be described in detail.

[0147] As Figure 3 shown, the embodiments of the present application provide a method for triggering a cell to send an SSB and / or SIB, which is executed by a terminal. The method includes:

[0148] Step 301, the terminal sends a first signal to a second cell;

[0149] Step 302, the terminal performs a target operation according to the first information from the first cell and / or the second cell;

[0150] Among them, the first signal is used to trigger the second cell to perform adjustments related to the Synchronization Signal Block (SSB) and / or the System Information Block (SIB). The first cell and the second cell are different cells;

[0151] The target operation includes at least one of the following:

[0152] (1) Receive the SSB and / or SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed upon by the protocol; the first information may directly or indirectly indicate the position for receiving the SSB and / or SIB, or the protocol agrees on the position for receiving the SSB and / or SIB.

[0153] (2) Receive the SSB and / or SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried in the first signal feedback information; in this case, the terminal receives the first signal feedback information and receives the SSB and / or SIB for which the first signal triggering is successful according to the direction corresponding to the SSB index carried therein.

[0154] (3) Receive the SSB and / or SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal; in this case, the terminal receives the SSB and / or SIB for which the first signal triggering is successful according to the direction corresponding to the SSB associated with the timing of sending the first signal.

[0155] (4) Start monitoring the type 0 (Type 0) physical downlink control channel PDCCH associated with the target SSB, where the target SSB is the SSB associated with the random access opportunity RO for sending the first signal; in this case, the terminal may start monitoring the Type 0 PDCCH associated with the SSB corresponding to the RO for sending the first signal.

[0156] (5) Blind-detect the scheduling information of the remaining minimum system information RMSI using the system information radio network temporary identity SI-RNTI within the type 0 common search space CSS corresponding to the control resource set 0 (CORESET 0); in this embodiment, the terminal starts blind-detecting the scheduling information of the RMSI (SIB1) using the SI-RNTI within the Type 0 CSS corresponding to the CORESET 0.

[0157] (6) Blind-detect the downlink control information DCI 1_0 within the type 0 CSS corresponding to the control resource set 0; in this embodiment, the terminal may blind-detect the DCI 1_0 within the Type 0 CSS corresponding to the CORESET 0.

[0158] (7) Receive the first signal feedback information at a second position, where the second position is determined according to the configuration of the first signal or agreed upon by the protocol; in this embodiment, the terminal may monitor the feedback of the first signal according to the configuration information of the first signal or according to the position agreed upon by the protocol.

[0159] (8) Skip detecting the DCI scrambled by the random access RNTI; in this case, the terminal does not detect the DCI scrambled by the random access RNTI. Optionally, the terminal does not listen for the second message Msg2 of the contention-based random access.

[0160] (9) Detect the DCI scrambled by the random access RNTI; in this case, optionally, the terminal listens for the second message Msg2 of the contention-based random access.

[0161] (10) Resend the first signal under a first condition, where the first condition includes: the terminal does not receive the second message Msg2 of the contention-based random access within the random access response RAR time window; in this embodiment, if the terminal does not receive Msg2 within the RAR time window, it resends the first signal. Optionally, the time window starts from the first symbol of the earliest CORESET of the PDCCH when the terminal is configured with a Type1-PDCCH CSS set.

[0162] (11) Do not send a physical uplink shared channel PUSCH transmission scheduled by the RAR uplink grant (UL Grant) after receiving the physical downlink shared channel PDSCH carrying the RAR message; in this embodiment, the terminal does not send a PUSCH transmission (Msg3) scheduled by the RAR UL Grant after receiving the PDSCH (Msg2) with the RAR message.

[0163] (12) Do not send the third message Msg3 of the contention-based random access after receiving Msg2; in this embodiment, the terminal does not send Msg3 after receiving Msg2.

[0164] (13) Receive the on-demand SIB within the type 1 CSS; in this case, the terminal receives the on-demand SIB within the type1 CSS, e.g., instead of receiving the RAR, it receives the SIB.

[0165] (14) Receive the on-demand SIB within the target search space, where the target search space is a search space dedicated to receiving the on-demand SIB; in this embodiment, the terminal receives the on-demand SIB within the search space dedicated to receiving the on-demand SIB.

[0166] (15) Determine the validity of the RO of the second cell according to the time division duplex TDD configuration information of the second cell, where the TDD configuration information is from the first cell; in this embodiment, the terminal can determine the RO validity of the second cell according to the TDD configuration of the second cell from the first cell.

[0167] (16) Determine an effective uplink occasion for sending the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is from the first cell. In this embodiment, the terminal can determine the effective uplink occasion for sending the first signal according to the TDD configuration of the second cell from the first cell.

[0168] In this embodiment, after the terminal sends the first signal, it can perform a target operation according to the first information, where the first information is from the first cell and / or the second cell, and the first cell and the second cell are two different cells. The first signal is used to trigger one or more second cells to perform SSB- and / or SIB-related adjustments. After sending the first signal, the terminal performs the above one or more target operations.

[0169] Optionally, the SIB includes SIB1. In the embodiments of the present application, the SIB may be SIB1, and SIB1 may be on-demand SIB1.

[0170] Optionally, the first signal may be an uplink wake-up signal (WUS), and the first signal may be in the form of a preamble sequence. When the first signal is WUS, the first signal feedback information is WUS feedback.

[0171] In the embodiments of the present application, the terminal sends a first signal to the second cell to trigger the second cell to perform SSB- and / or SIB-related adjustments. After sending the first signal, the terminal can perform a target operation according to the first information from the first cell and / or the second cell, so as to ensure accurate reception of the SSB and / or SIB sent by the second cell.

[0172] As an optional embodiment, the adjustments related to the synchronization signal block SSB and / or the system information block SIB include:

[0173] Changing from not sending SSB to sending SSB;

[0174] Changing from not sending SIB to sending SIB;

[0175] Changing from sending long-period SSB to sending short-period SSB; for example, changing from sending long-period SSB to sending SSB with a short period of 20 ms;

[0176] Changing from sending long-period SIB to sending short-period SIB;

[0177] Adjust from only transmitting the Primary Synchronisation Signal (PSS) and the Secondary Synchronisation Signal (SSS) to transmitting the SSB. For example, the SSB that only transmits the PSS and the SSS can be referred to as a light SSB, and the adjustment of the second cell can be from transmitting the light SSB to transmitting a normal SSB.

[0178] In this embodiment, the first signal transmitted by the terminal is used to trigger the second cell to perform adjustments related to the SSB and / or SIB. After receiving the first signal, the second cell can perform one or more of the above adjustment operations.

[0179] As an optional embodiment, the relationship between the first cell and the second cell includes one of the following:

[0180] The first cell and the second cell are intra-frequency cells;

[0181] The first cell and the second cell are inter-frequency cells;

[0182] The first cell and the second cell belong to the same cell group;

[0183] The first cell and the second cell belong to the same Timing Advance Group (TAG);

[0184] The first cell and the second cell belong to the same tracking area.

[0185] In this embodiment, the first cell and the second cell can be intra-frequency cells or inter-frequency cells, or the first cell and the second cell belong to the same cell group or cells of the same TAG, or belong to the same interior.

[0186] As an optional embodiment, before performing the target operation, the method further includes:

[0187] Obtain second information carried by the SSB transmitted by the second cell;

[0188] Determine the transmission status of the SIB of the second cell according to the second information, and the transmission status of the SIB of the second cell includes at least one of the following:

[0189] Send the SIB status;

[0190] Do not send the status of the SIB;

[0191] Support the on-demand SIB sending mode;

[0192] Do not support the on-demand SIB sending mode.

[0193] In this embodiment, before the terminal performs the target operation, it determines the sending status of the SIB of the second cell according to the second information. Optionally, the second information may belong to the first information, and the second information may be carried by the SSB of the second cell. Among them, the sending status may also be referred to as the sending mode.

[0194] Optionally, the manner in which the SSB of the second cell carries the second information includes at least one of the following:

[0195] (1) Indicated by the synchronization sequence included in the SSB of the second cell; for example: the second information may be carried in the synchronization sequence included in the SSB sent by the second cell.

[0196] (2) Indicated by the existing target field in the MIB carried by the PBCH of the SSB of the second cell;

[0197] Optionally, there is a one-to-one mapping relationship between the specific value of the existing target field of the MIB carried by the PBCH and the sending status of the SIB. For example: when k SSB is a specific value, it means that the second cell is in the state of not sending SIB1, or in the state of normally sending SIB1, or in the sending mode of supporting on-demand triggering of SIB1; or, when k SSB is a specific value, and PDCCH-ConfigSIB1 (pdcch-ConfigSIB1) is a specific value, it means that the second cell is in the state of not sending SIB1, or in the state of normally sending SIB1, or in the sending mode of supporting on-demand triggering of SIB1.

[0198] In this embodiment, the second information may be carried in the SSB sent by the second cell, and is indicated by an existing target field in the message included in the SSB. For example, it is indicated by the MIB carried by the PBCH included in the SSB. Optionally, the existing fields in the MIB include one or more of the following: system frame number, subCarrierSpacingCommon, ssb-SubcarrierOffset, dmrs-TypeA-Position, pdcch-ConfigSIB1, cellBarred, intraFreqReselection, spare. When any of the above existing fields has a specific value, the second information may be indicated.

[0199] For example, use the ssb-SubcarrierOffset (k SSB ) indicated by the SSB to indicate the energy-saving state of the second cell. When k SSB is equal to a specific value, the UE considers the SIB transmission status / SIB transmission mode of the second cell as follows:

[0200] Normally transmit SIB;

[0201] Do not transmit SIB;

[0202] Support the on-demand SIB mode.

[0203] Among them, the specific value is, for example, a reserved value. For example, k SSB = 30 (FR1) or kSSB = 14 (FR2)), indicating that the network side is now in the on-demand SIB1 mode and does not transmit SIB1 now.

[0204] (3) Indicated by the new payload of the synchronization sequence included in the SSB of the second cell;

[0205] In this embodiment, additional payload may be added to the synchronization sequence included in the SSB of the second cell to indicate the energy-saving state of the second cell. For example, it indicates that the second cell is in the state of normally transmitting SIB, not transmitting SIB, or supporting the on-demand SIB mode.

[0206] (4) Indicated by the additional payload in the PBCH of the SSB of the second cell; in this embodiment, additional payload can be added to the PBCH included in the SSB of the second cell to indicate the energy-saving status of the second cell.

[0207] (5) Implicitly indicated by the PBCH demodulation reference signal DMRS included in the SSB of the second cell; wherein, there is a mapping relationship between the DMRS sequence of the PBCH and the transmission status of the SIB or SSB. In this embodiment, the transmission status of the SIB and / or SSB can be implicitly indicated by the PBCH DMRS in the SSB sent by the second cell.

[0208] The manner of the implicit indication is as follows: for example, if the UE receives the DMRS sequence A, the DMRS sequence A indicates that the second cell is in the state of not transmitting the SIB; if the UE receives the DMRS sequence B, the DMRS sequence B indicates that the second cell is in the state of transmitting the SIB; the corresponding relationship of the above implicit indication is configured for the UE in advance by the network side or agreed in advance by the protocol.

[0209] The following is an example to illustrate the manner of indicating the transmission status of the SIB and / or SSB of the second cell through one or more fields.

[0210] For example: certain indication information (such as the second information) is carried by the SSB of the second cell to indicate the transmission status of the SIB and / or SSB of the second cell. These indication information can be carried in the synchronization sequence or PBCH. For example: re-interpreted using one or more existing fields and specific values are used as the verification of the SIB and / or SSB transmission status.

[0211] The information fields included in the traditional MIB (obtained from the PBCH of the SSB), and the available values of each information field are as follows:

[0212]

[0213]

[0214] When a certain field in the above information fields is a specific value, it can be used to implicitly indicate the transmission status of the SIB and / or SSB of the second cell. For example: when the SFN is a certain specific value, such as all 0s or all 1s, it is used to represent that the second cell has / has not normally transmitted the SIB1 / SSB; or the SFN is 7 bits, compared with the 6 bits in the current protocol, the lowest / highest bit added in this embodiment can be used to represent that the second cell has / has not normally transmitted the SIB1 / SSB.

[0215] In addition, ssb-SubcarrierOffset can also be set to a special value to indicate the SIB1 and / or SSB transmission status of the second cell. k SSB It is 5 bits in FR1 and 4 bits in FR2. For FR1, it has corresponding meanings in the range of 0 - 29, and for FR2, it has corresponding meanings in the range of 0 - 13. To avoid conflicts with the existing mechanisms mentioned above, it can be set that when ssb-SubcarrierOffset is a specific value, such as in FR1, when ssb-SubcarrierOffset included in the SSB sent by the second cell is 30, it represents that the second cell is in the normal SIB1 transmission state; when ssb-SubcarrierOffset = 31, it represents that the second cell is in the on-demand SIB1 transmission state (i.e., SIB1 is not being sent currently); in FR2, when ssb-SubcarrierOffset included in the SSB sent by the second cell is 14, it represents that the second cell is in the on-demand SIB1 transmission state (i.e., SIB1 is not being sent currently), as shown in Table 1 and Table 2.

[0216] The transmission status of SIB and / or SSB can also be implicitly indicated by the PBCH DMRS in the SSB sent by the second cell, or a combination of the above methods can be used to indicate the transmission status of SIB and / or SSB.

[0217] Optionally, k SSB can also be used to indicate whether the cell supports the on-demand SIB1 mode.

[0218] For example: For FR1, when k SSB = 30, and the value of RMSI-PDCCH-config (CORESET0 + searchspace0) or pdcch-ConfigSIB1 is a specific value, it can be used to indicate the current SIB1 transmission status of the cell that sends the SSB.

[0219] Among them, k SSB = 30 + RMSI-PDCCH-config = 0, indicating that the cell that sends the SSB is in the state of not sending SIB1;

[0220] k SSB = 30 + RMSI-PDCCH-config = 1, indicating that the cell that sends the SSB is in the normal SIB1 transmission state;

[0221] k SSB = 30 + RMSI-PDCCH-config = 2, indicating that the cell that sends the SSB is a cell that supports on-demand SIB1;

[0222] In the above embodiments, since the value of RMSI-PDCCH-config (or pdcch-ConfigSIB1) is bound to k SSB to indicate the status of sending SIB1 in the target cell, pdcch-ConfigSIB1 cannot be used to indicate the configuration information of CORESET0 and search space 0 (searchspace0). Also, since the target cell is in the on-demand SIB1 state, that is, SIB1 is not sent during energy saving, the UE itself does not need to obtain the configuration information of CORESET0 and searchspace0 (i.e., does not need to listen for the scheduling information of SIB1 according to the configuration of CORESET0 and searchspace0). However, when the first signal triggers successfully, the UE needs to start receiving SIB1. At this time, the UE can obtain the configuration information of CORESET0 and searchspace0 from the first information.

[0223] As an optional embodiment, the first information includes at least one of the following:

[0224] The second cell identifier;

[0225] Whether the second cell supports or does not support on-demand SIB sending; that is, it indicates whether the second cell supports on-demand SIB in the first information.

[0226] Whether the second cell supports or does not support on-demand SSB sending; that is, it indicates whether the second cell supports on-demand SIB in the first information.

[0227] The TDD configuration of the second cell;

[0228] Unified Access Control (UAC) configuration;

[0229] The bar configuration for prohibiting cell residence;

[0230] The first signal configuration for triggering SSB sending;

[0231] The first signal configuration for triggering SSB adaptation;

[0232] The first signal configuration for triggering SIB sending;

[0233] The first signal configuration for triggering SIB adaptation;

[0234] The transmission condition information of the first signal;

[0235] The SIB configuration of the second cell after being successfully triggered by the first signal; being successfully triggered by the first signal may mean successfully triggering the second cell to perform SSB and / or SIB-related adjustments. For example: triggering the second cell to change from not transmitting SSB to transmitting SSB, or triggering the second cell to change from transmitting long-period SSB to transmitting short-period SSB.

[0236] The SSB configuration of the second cell after being successfully triggered by the first signal.

[0237] In this embodiment, the first information corresponds to one or more second cells. The first information may be configured by the first cell or the second cell through broadcast information display, or may default to be the same as the corresponding information content of the first cell. Optionally, the first signal configuration is configured for each cell, or for each cell group.

[0238] Optionally, the SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0239] The period of transmitting SIB; refers to the period of the second cell transmitting SIB after being successfully triggered.

[0240] The control resource set 0 configuration; refers to the CORESET0 configuration of the second cell transmitting SIB after being successfully triggered.

[0241] The search space 0 (searchspace0) configuration; refers to the search space 0 configuration of the second cell transmitting SIB after being successfully triggered.

[0242] The type 0 PDCCH configuration; refers to the type 0 PDCCH configuration of the second cell transmitting SIB after being successfully triggered.

[0243] The SIB listening window; refers to the listening window for the terminal to listen to SIB after being successfully triggered. The terminal can listen to SIB within this listening window.

[0244] The time length of transmitting SIB; refers to the time length of the second cell transmitting SIB after being successfully triggered.

[0245] The number of times of transmitting SIB; refers to the number of times of the second cell transmitting SIB after being successfully triggered.

[0246] The number of SIB transmission periods; refers to the number of periods of the second cell transmitting SIB after being successfully triggered.

[0247] The frequency domain information of SIB; may include: the starting point position in the frequency domain, the number of frequency bands occupied in the frequency domain, the bandwidth size of the signal, etc. The starting point position in the frequency domain, for example: the carrier, BWP, or the position in the frequency band where it is located.

[0248] Time domain information of the SIB; it may include time domain position (such as the offset relative to the synchronization / broadcast channel), the size or period of the listening window, the number of time domain repetitions, and the mode, etc.

[0249] Transmission mode of the SIB.

[0250] Optionally, the transmission mode of the SIB includes at least one of the following:

[0251] Normal SIB transmission mode; it is the traditional SIB transmission mode compared to the simplified SIB transmission mode;

[0252] Simplified SIB transmission mode; for example, only the core configurations such as RACH are sent;

[0253] Aggregate SIB transmission mode; for example, there is no time domain gap between multiple SIBs;

[0254] Long-period SIB transmission mode, that is, the period of sending SIB1 is long.

[0255] Optionally, the SSB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0256] Frequency point for sending the SSB; it refers to the frequency point at which the second cell sends the SSB after being successfully triggered by the first signal; it can also refer to the period of sending the SSB by the second cell after being triggered successfully, the number of SSBs sent in each period, etc.;

[0257] Time domain index or time domain position for sending the SSB; it refers to one or more time domain indexes or positions at which the second cell sends the SSB after being triggered successfully;

[0258] Listening window for the SSB; it refers to the listening window at which the terminal listens to the SSB sent by the second cell after being successfully triggered by the first signal, and the terminal can listen to the SSB sent by the second cell within the listening window;

[0259] Time length for transmitting the SSB; it refers to the time length of transmitting the SSB of the second cell after being successfully triggered by the first signal;

[0260] Number of times of sending the SSB; it refers to the number of times of sending the SSB of the second cell after being successfully triggered by the first signal;

[0261] Number of transmission periods of the SSB; it refers to the number of transmission periods of the SSB sent by the second cell after being successfully triggered by the first signal;

[0262] The time-domain relationship between the triggered SSB and the SSB of the first carrier; the first carrier is the carrier that can be used as the time-frequency reference synchronization for the second cell; it refers to the time-domain relationship between the SSB sent by the second cell after being successfully triggered by the first signal and the first carrier;

[0263] The frequency-domain relationship between the triggered SSB and the SSB of the first carrier; it refers to the frequency-domain relationship between the SSB sent by the second cell after being successfully triggered by the first signal and the first carrier;

[0264] The spatial-domain relationship between the triggered SSB and the SSB of the first carrier; it refers to the spatial-domain relationship between the SSB sent by the second cell after being successfully triggered by the first signal and the first carrier;

[0265] The time-domain position of sending the first SSB; it refers to the time-domain position where the second cell starts to send the first SSB after being successfully triggered by the first signal, for example: sending at the nearest SSB period of X time slots / symbols after the sending time of the trigger signal (the first signal).

[0266] The transmission mode of the SSB.

[0267] Optionally, the transmission mode of the SSB includes at least one of the following:

[0268] Normal SSB transmission mode; it is the traditional SSB transmission mode compared to the simplified SSB transmission mode;

[0269] Simplified SSB transmission mode; for example, only sending PSS and SSS;

[0270] Aggregated SSB transmission mode; for example, there is no time-domain gap between multiple SSBs;

[0271] Long-period SSB transmission mode; for example, the period of the second cell sending the SSB is longer.

[0272] As an optional embodiment, the first signal configuration includes at least one of the following:

[0273] (1) Configuration for listening to the first signal feedback information; the first signal feedback information is such as the PDCCH of msg2;

[0274] Optionally, the configuration for listening to the first signal feedback information includes at least one of the following:

[0275] Configuration of the control resource set for listening to the first signal feedback information;

[0276] Configuration of the search space for listening to the first signal feedback information;

[0277] PDCCH configuration for listening to the first signal feedback information;

[0278] Time window for listening to the first signal feedback information;

[0279] Starting position for listening to the first signal feedback information.

[0280] (2) Transmission configuration of the first signal.

[0281] Optionally, the transmission configuration of the first signal includes at least one of the following:

[0282] 1) Signal synchronization reference configuration; it can include at least one of the following: SSB of the first carrier, Channel State Information Reference Signal (CSI-RS), Phase-tracking reference signal (TRS), Global Positioning System (GPS) timing, etc.

[0283] 2) Signal form configuration; such as RACH, SRS, or PUCCH, etc.

[0284] 3) Signal time-domain resource configuration;

[0285] 4) Signal frequency-domain resource configuration;

[0286] 5) Signal sequence configuration; for example: including preamble index or preamble index range or preamble group index; for example: preamble grouping, indicating preamble group index, representing that this group of preambles is used to trigger the transmission of SSB of the second carrier or carrier group.

[0287] 6) Signal power configuration;

[0288] Optionally, the signal power configuration includes at least one of the following:

[0289] Initial signal power;

[0290] Climbing power step of the signal power;

[0291] Number of repetitions corresponding to each signal transmission;

[0292] Maximum number of repetitions for signal transmission.

[0293] 7) Signal spatial domain parameter configuration;

[0294] The signal spatial domain parameter configuration may include at least one of the following: the correspondence between the signal and the first carrier or the second carrier or the carrier group SSB; the configuration of the signal transmission timer (Timer). Wherein, the Timer is used to avoid the first signal being sent too frequently. After the first signal is sent, the Timer is started, and the first signal is not allowed to be sent repeatedly before the Timer times out.

[0295] As an optional embodiment, when the target operation is to receive the SSB and / or SIB sent by the second cell at the first position, the first position includes at least one of the following:

[0296] (1) After X time units after sending the first signal, where X>0; the time unit is, for example, a time slot, a symbol, or a millisecond (ms). The terminal may start detecting or receiving one or more SSBs and / or SIBs sent by the second cell after X time units after sending the first signal.

[0297] (2) After Y time units after receiving the feedback information of the first signal, where Y>0; the terminal may start detecting or receiving one or more SSBs and / or SIBs sent by the second cell after Y time units after receiving the feedback of the first signal.

[0298] The value of X and / or Y may include: a predefined value plus a target offset value, and the target offset value is determined according to the first SSB / SIB of the next SSB / SIB1 period. The predefined value can ensure the time for the network side to receive and detect the first signal, that is, after the terminal receives the feedback of the first signal, it receives SSB / SIB1 at the transmission position of the first SSB / SIB of the next SSB / SIB1 period after the predefined time unit.

[0299] (3) The time position determined according to the scheduling information of the SIB monitored at the third position, where the third position is the first PDCCH occasion of the scheduling SIB closest to the moment of sending the first signal; the terminal may start listening to the scheduling information of the SSB and / or SIB at the first PDCCH Occasion of the scheduling SIB closest to the moment of sending the first signal.

[0300] (4) The time position determined according to the scheduling information of the SIB monitored at the fourth position, where the fourth position is the first PDCCH occasion of the scheduling SIB closest to the moment of receiving the feedback information of the first signal; the terminal may start listening to the scheduling information of the SSB and / or SIB at the first PDCCH Occasion of the scheduling SIB closest to the moment of receiving the feedback of the first signal.

[0301] Within the timing duration of the first timer started after sending the first signal; the terminal starts the first timer after sending the first signal, and monitors or detects the SSB and / or SIB within the timing duration of this first timer.

[0302] At the time after the timeout of the second timer started after sending the first signal; the terminal starts the second timer after sending the first signal, and monitors or detects the SSB and / or SIB after the timeout of the timing duration of this second timer.

[0303] Within the monitoring window opened after Z time units after sending the first signal, where Z > 0; the terminal opens the monitoring window after Z time units after sending the first signal, and monitors or detects the SSB and / or SIB within this monitoring window.

[0304] Within the monitoring window opened after receiving the feedback information of the first signal; the terminal opens the monitoring window after receiving the feedback of the first signal, and monitors or detects the SSB and / or SIB within this monitoring window. Optionally, if the terminal does not receive the SSB and / or SIB within this monitoring window, it sends the first signal again.

[0305] Among them, the values of X, Y, and Z are configured by the network side device, or agreed by the protocol or included in the first signal configuration;

[0306] The timing duration of the first timer and / or the second timer is configured by the network side device, or agreed by the protocol or included in the first signal configuration; the start position, end position, and duration of the monitoring window are configured by the network side device, or agreed by the protocol or included in the first signal configuration.

[0307] As an optional embodiment, when the target operation is to receive the feedback information of the first signal at the second position, the second position includes at least one of the following:

[0308] (a) After Q time units after sending the first signal, the value of Q is configured by the network side device, or agreed by the protocol or included in the first signal configuration; the terminal starts to detect the feedback information of the first signal after Q time units after sending the first signal. The time unit is, for example, a time slot, a symbol, or a millisecond (ms).

[0309] (b) The moment after the timeout of the third timer started after sending the first signal; the terminal starts the third timer after sending the first signal, and starts to detect the feedback information of the first signal after the timeout of this third timer.

[0310] (c) During the timing period of the fourth timer started after sending the first signal; the terminal starts the fourth timer after sending the first signal, and detects the first signal feedback information during the timing period of this fourth timer.

[0311] (d) Within the listening window started after sending the first signal; the terminal starts the listening window after sending the first signal, and detects the first signal feedback information within this listening window. Optionally, if the terminal does not receive the first signal feedback information within the listening window, it sends the first signal again.

[0312] Wherein, the timing duration of the third timer and / or the fourth timer is configured by the network side device, or agreed by the protocol or included in the first signal configuration; the start position, end position and duration of the listening window are configured by the network side device, or agreed by the protocol or included in the first signal configuration.

[0313] As an optional embodiment, the starting point of the time for listening to the type 0 physical downlink control channel PDCCH includes at least one of the following:

[0314] (A) The first PDCCH occasion after sending the first signal; the terminal can start listening to the Type0 PDCCH at the first PDCCH Occasion after sending the first signal.

[0315] (B) The first PDCCH occasion after S time units after sending the first signal, where S>0; the terminal can start listening to the Type0 PDCCH at the first PDCCH Occasion after S time units after sending the first signal. The time unit is, for example, a time slot, a symbol, or a millisecond (ms).

[0316] (C) The first PDCCH occasion after T time units after receiving the feedback information of the first signal, where T>0; the terminal can start listening to the Type0 PDCCH at the first PDCCH Occasion after T time units after receiving the first signal feedback.

[0317] (D) The first symbol of the earliest control resource set for receiving the type 0 PDCCH after sending the first signal; the terminal can start listening to the Type0 PDCCH from the first symbol of the earliest CORESET for receiving the Type0 PDCCH after sending the first signal.

[0318] (E) After U time units after sending the first signal, receive the first symbol of the earliest control resource set for Type 0 PDCCH, where U > 0; the terminal can start listening for Type 0 PDCCH from the first symbol of the earliest CORESET for receiving Type 0 PDCCH after U time units after sending the first signal.

[0319] (F) After V time units after receiving the first signal feedback information, receive the first symbol of the earliest control resource set for Type 0 PDCCH, where V > 0; the terminal can start listening for Type 0 PDCCH from the first symbol of the earliest CORESET for receiving Type 0 PDCCH after V time units after receiving the first signal feedback.

[0320] (G) The moment when the fifth timer started after sending the first signal expires; the terminal starts the fifth timer after sending the first signal and starts listening for Type 0 PDCCH after the fifth timer expires.

[0321] (H) The moment after receiving the first signal feedback information; the terminal can start listening for Type 0 PDCCH after receiving the first signal feedback.

[0322] Among them, the values of S, T, U, and V are configured by the network side device, or agreed by the protocol, or included in the first signal configuration; the timing duration of the fifth timer is configured by the network side device, or agreed by the protocol, or included in the first signal configuration.

[0323] As an optional embodiment, the sending of the first signal to the second cell includes:

[0324] Sending the first signal to the second cell according to a second condition; in this embodiment, the condition for the terminal to send the first signal can be pre-defined by the protocol, configured by the network side, or determined according to the first information.

[0325] Among them, the second condition includes at least one of the following:

[0326] 1) Performing cell selection; the terminal can send the first signal to the second cell when performing cell selection;

[0327] 2) Performing cell reselection; the terminal can send the first signal to the second cell when performing cell reselection;

[0328] 3) After completing cell reselection or cell selection, the terminal needs to access the second cell, where the second cell is a cell that supports sending SIBs on demand, and the terminal receives a first signal configuration that triggers the second cell to send SIBs;

[0329] 4) The terminal receives a first signal configuration that triggers the second cell to send SIBs; when the terminal receives a first signal configuration for triggering the SIB transmission of the second cell, it can send a first signal.

[0330] 5) The terminal receives a first signal configuration that triggers the second cell to send SIBs, and the second cell supports sending SIBs on demand; when the terminal receives a first signal configuration for triggering the SIB transmission of the second cell and the second cell supports the on-demand SIB mode, it can send a first signal.

[0331] 6) The terminal receives a first signal configuration that triggers the second cell to send SIBs, and the second cell is configured to prohibit residence; when the terminal receives a first signal configuration for triggering the SIB transmission of the second cell and the second cell is configured to be in a prohibited residence state (bar), it can send a first signal. The second cell being configured to prohibit residence means that the second cell is barred.

[0332] 7) The terminal receives a first signal configuration that triggers the second cell to send SIBs, and the second cell is configured to prohibit residence, and the terminal needs to access the second cell;

[0333] 8) The terminal receives a first signal configuration that triggers the second cell to send SIBs, and the terminal cannot camp on the current cell; when the terminal receives a first signal configuration for triggering the SIB transmission of the second cell and determines that it cannot camp on the current cell, it can send a first signal to the second cell.

[0334] 9) The terminal receives a first signal configuration that triggers the second cell to send SIBs, and the terminal cannot camp on the current cell, and the second cell is a suitable cell;

[0335] 10) The terminal receives a first signal configuration that triggers the second cell to send SIBs, and the terminal needs to send a Physical Random Access Channel (PRACH) on the second cell;

[0336] 11) The terminal receives a first signal configuration for triggering the second cell to send SIBs, and the first information or the second information indicates that the second cell is in a state that prohibits the terminal from camping;

[0337] 12) The first cell does not meet the residence condition, and the terminal receives the first signal configuration for triggering the second cell to send the SIB; if the terminal determines that the first cell does not meet the terminal residence condition and the terminal receives the first signal configuration for triggering the SIB transmission of the second cell, the terminal may send the first signal.

[0338] 13) The terminal initiates random access; the first signal may be sent when the terminal initiates random access.

[0339] 14) The terminal determines that the first cell cannot be resident and the second cell is a suitable cell; if the terminal determines that the first cell cannot be resident and the second cell is a suitable cell, the terminal may send the first signal.

[0340] As an optional embodiment, the condition for the terminal to send the first signal may further include: the terminal performs cell detection, receives the SSB, but does not detect the SIB1, and the first signal can be used to wake up the target cell.

[0341] For example: If k SSB indicates CD-SSB (in FR1, k SSB is from 0 to 23; in FR2, k SSB is from 0 to 11), usually the SIB1 can be detected in the CORESET0 and SSB associated with these CD-SSBs, but if the terminal does not detect the SIB1 at the corresponding position, the terminal can use the first signal to wake up the second cell;

[0342] If k SSB indicates NCD-SSB, that is, in FR1, if k SSB > 23, in FR2, if k SSB > 11, it means that the SSB does not have Type 0 CSS, then the terminal will, according to the indicated k SSB , in combination with the RMSIPDCCH configuration (PDCCH ConfigSIB1 of the MIB), find the GSCN of the next SSB, and then detect whether the next SSB is CD-SSB or NCD-SSB.

[0343] As an optional embodiment, sending the first signal to the second cell includes: sending the first signal to the second cell on the target resource; wherein, the target resource is carried by the first information or is agreed by the protocol.

[0344] Wherein, the target resource includes at least one of the following:

[0345] Resources for the second cell to perform random access; the terminal may send the first signal on the resources for the second cell to perform random access;

[0346] Part of the timing in the resources for random access in the second cell; The terminal may send a first signal at part of the timing of the resources for random access in the second cell;

[0347] One timing in the resources for random access in the second cell; The terminal may send a first signal at one timing of the resources for random access in the second cell;

[0348] Resources only for sending the first signal and not the resources for random access in the second cell; Optionally, this resource is completely independent of the resources for random access in the second cell and is dedicated to sending the first signal. In this case, the RO for sending the first signal is only used for the first signal transmission, and the association relationship between the SSB and the RO does not need to be specified.

[0349] As an optional embodiment, the sending of the first signal to the second cell includes at least one of the following:

[0350] Select the RO corresponding to the SSB according to the reference signal measurement result of the second cell and send the first signal;

[0351] Send the first signal on the time-domain resources dedicated to sending the first signal;

[0352] Send the first signal on the frequency-domain resources dedicated to sending the first signal;

[0353] Send the first signal on the RO associated with the target SSB index, where the target SSB index is configured by the network-side device, or agreed by the protocol, or included in the first signal configuration.

[0354] In this embodiment, when the terminal sends the first signal, it may select the RO corresponding to the SSB according to the reference signal measurement result of the second cell and send the first signal, such as Msg1 can be used as the first signal; The terminal may send the first signal on the time-domain resources or frequency-domain resources dedicated to the first signal transmission; The terminal may send the first signal on the RO associated with the target SSB index.

[0355] As an optional embodiment, the first signal feedback information includes at least one of the following:

[0356] 1) Simplified Msg2, where the Simplified Msg2 includes the random access preamble identifier RAPID; The Simplified Msg2 may only include the RAPID, while the traditional Msg2 (Legacy Msg2) includes contents such as RAPID, Timing Advance (TA) command, uplink grant (UL grant), BI, etc.

[0357] 2) SSB index; The SSB index can be used to inform the UE that the transmission direction of the next SIB can refer to the transmission direction of the SSB index.

[0358] 3) RAPID; If the RAPID is the same as the ID of the first signal preamble sent by the terminal, the terminal considers that the first signal is successfully sent; if not, the terminal considers that the first signal is sent unsuccessfully.

[0359] 4) Direction information of the SIB; for example, Quasi co-location (QCL) information, which is used to inform the terminal of the transmission direction of the next SIB.

[0360] 5) The first indication information, which is used to indicate that the terminal does not need to send the first signal again. The first indication information is DCI or a Media Access Control MAC control element CE; the first indication information can be a dedicated first signal feedback (DCI), which is used to tell the terminal that the second cell has woken up and there is no need to send the first signal again. Optionally, it can be indicated by 1-bit information whether the current SIB is in the normal transmission state.

[0361] 6) The PDSCH carrying the SIB after the trigger is successful; the terminal can know the PDSCH of the SIB after the trigger is successful based on this feedback information.

[0362] 7) Type 0 Common Search Space PDCCH (Type 0 CSS PDCCH), and the terminal can monitor the Type 0 CSS PDCCH based on this feedback information.

[0363] As an optional embodiment, the receiving direction of the first signal feedback information includes at least one of the following:

[0364] The direction of the SSB associated with the timing when the terminal sends the first signal;

[0365] The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal;

[0366] Omnidirectional.

[0367] In this embodiment, the second cell may send the first signal feedback according to the direction of the SSB associated with the occasion when the terminal sends the first signal; then the terminal may receive the first signal feedback in the direction of the SSB associated with the occasion when the first signal is sent; the second cell may send the first signal feedback according to the direction of one or more SSBs adjacent to the SSB associated with the occasion when the terminal sends the first signal, then the terminal may receive the first signal feedback in the direction of one or more SSBs adjacent to the SSB associated with the occasion when the first signal is sent; the second cell may send the first signal feedback omnidirectionally, then the terminal may receive the first signal feedback omnidirectionally.

[0368] As an optional embodiment, when the terminal receives the SIB sent by the second cell, the receiving direction of the PDCCH of the SIB and / or the receiving direction of the SIB include at least one of the following:

[0369] The direction of the SSB associated with the occasion when the terminal sends the first signal;

[0370] The direction of one or more SSBs adjacent to the SSB associated with the occasion when the terminal sends the first signal;

[0371] Omnidirectionally.

[0372] In this embodiment, the second cell may send the PDCCH of the SIB and / or the SIB according to the direction of the SSB associated with the occasion when the terminal sends the first signal; then the terminal may receive the PDCCH of the SIB and / or the SIB in the direction of the SSB associated with the occasion when the first signal is sent; the second cell may send the PDCCH of the SIB and / or the SIB according to the direction of one or more SSBs adjacent to the SSB associated with the occasion when the terminal sends the first signal, then the terminal may receive the PDCCH of the SIB and / or the SIB in the direction of one or more SSBs adjacent to the SSB associated with the occasion when the first signal is sent; the second cell may send the PDCCH of the SIB and / or the SIB omnidirectionally, then the terminal may receive the PDCCH of the SIB and / or the SIB omnidirectionally.

[0373] Taking the SIB as the on-demand SIB1 as an example, assume that the terminal obtains the first information from the first cell. The first information includes resource configurations for sending the first signal (such as RACH resource configuration, preamble configuration), SSB-related information of the second cell (such as the transmission period of the SSB, the number of transmissions, etc.), the second cell supports on-demand SIB1, and the SIB1 configuration of the second cell after successful triggering, etc. Examples of multiple ways for the terminal to receive on-demand SIB1 are described as follows:

[0374] Method 1: The network side configures the RO for sending the first signal as the RO for RACH in the second cell. The mapping schematic diagram of the SSB and the RO is as Figure 4 shown. Assume that each RO maps to an SSB. Taking the first signal as WUS as an example, the method for the terminal to receive on-demand SIB1 includes:

[0375] Step 41: The UE selects the RO corresponding to SSB6 to send WUS according to the SSB measurement result; After X ms after sending WUS, start listening for WUS feedback (PDCCH for Msg2) in the CORESET and SS configured for WUS listening;

[0376] Step 42: The network side detects the WUS sent by the UE on this RO, sends Msg2 as the feedback information for this WUS; and sends SIB1 to the UE in the direction of SSB6 or multiple SSBs adjacent to SSB6;

[0377] Step 43: After the UE listens for WUS feedback in the CORESET and SS for WUS listening, it does not send Msg3, and starts listening for the scheduling information of SIB1 at the first PDCCH Occasion for scheduling SIB1 closest to the moment of receiving WUS feedback (Msg2);

[0378] Among them, the listening duration for listening to SIB1 or the number of SIB1s listened to depends on the first information or prior agreement in the protocol. For example, it is agreed that the terminal listens for X cycles, or listens for Y slots.

[0379] Method 2: The RO for the terminal to send the first signal is part of or one of the legacy ROs. The network side configures the RO associated with the target SSB index to be used for sending the first signal. The UE does not consider the SSB with the largest RSRP and can only send the first signal in the RO corresponding to the specified target SSB index, as Figure 5As shown, assuming the target SSB index is SSB3, and taking the first signal being WUS as an example, after the second cell receives the WUS, it needs to send SIB1 in all directions. The method for the terminal to receive on-demand SIB1 includes:

[0380] Step 51: The UE cannot camp on the first cell and receives the WUS configuration of the second cell. The network side configures the UE to be able to send WUS (Msg1) within the RO associated with the target SSB index (SSB index = 3) to trigger the sending of SIB1 by the second cell. WUS is a preamble configured by the network side or agreed upon by the protocol and has a specific random access preamble index.

[0381] Step 52: The UE sends WUS on the RO associated with the SSB of SSB index = 3; After Z slots after the UE sends WUS, it starts to listen for SIB1 on the first PDCCH Occasion that schedules SIB1 nearest.

[0382] Step 53: The network side detects the WUS sent by the UE on the RO associated with the SSB of SSB index = 3; Subsequently, it starts to send SIB1 in all directions.

[0383] Among them, the listening duration for listening to SIB1 or the number of SIB1s listened to depends on the first information or the prior agreement of the protocol. For example, it is agreed that the terminal listens for X cycles or listens for Y slots.

[0384] Method 3: Taking the first signal being WUS as an example, the network side configures the occasion (WO) for sending WUS to be the RO used for RACH by the second cell, and there is no mapping between the SSB and the WO, as Figure 6 shown, there is no mapping relationship between the SSB and the RO. The method for the terminal to receive on-demand SIB1 includes:

[0385] Step 61: The UE cannot camp on the first cell and receives the WUS configuration of the second cell. The WUS configuration configures the time domain and frequency domain configurations of the occasion that can be used to send WUS.

[0386] Step 62: The UE sends WUS on the occasion for sending WUS indicated by the WUS configuration; After X ms after the UE sends WUS, it starts to listen for SIB1 on the first PDCCH Occasion that schedules SIB1 nearest.

[0387] Step 63: The network side detects the WUS sent by the UE on the WUS occasion, and then starts to send SIB1 omnidirectionally;

[0388] Among them, the monitoring duration of SIB1 or the number of monitored SIB1s depends on the first information or the prior agreement of the protocol. For example, it is agreed that the terminal monitors X cycles or Y slots.

[0389] Method 4: Taking the first signal being WUS as an example, the RO configured by the network side to send WUS is a separate resource (WUS occasion) that is completely independent of the resources for random access in the second cell, as Figure 7 shown. This WUS occasion is only used to send WUS, and there is no need to stipulate the association relationship between the SSB and the occasion. After receiving the WUS, the network side sends SIB1 omnidirectionally. The method for the terminal to receive on-demand SIB1 includes:

[0390] Step 71: The UE cannot camp on the first cell and has received the WUS configuration of the second cell. The UE sends WUS (Msg1) under the WUS occasion configured by the network side to trigger the second cell to send SIB1;

[0391] Step 72: The network side detects the WUS sent by the UE on the WUS occasion;

[0392] Step 73: After Y slots after sending the WUS, the UE starts to monitor the scheduling information of SIB1 on the first PDCCH Occasion that schedules SIB1 recently;

[0393] Among them, the monitoring duration of SIB1 or the number of monitored SIB1s depends on the first information or the prior agreement of the protocol. For example, it is agreed that the terminal monitors X cycles or Y slots.

[0394] Method 5: Taking the first signal being WUS as an example, the RO configured by the network side to send WUS is a separate resource (WUS occasion) other than the resources for random access in the second cell. This WUS occasion is only used for WUS transmission, and there is a mapping between the SSB and the WUS occasion, as Figure 8 shown; after receiving the WUS, the network side sends SIB1 in the direction of the SSB associated with the occasion of sending the WUS. The method for the terminal to receive on-demand SIB1 includes:

[0395] Step 81: The UE fails to camp on the first cell and receives the WUS configuration of the second cell. Under the WUS occasion configured by the network side, the UE sends WUS (Msg1) on the WUS occasion associated with the SSB whose measurement result meets the target threshold, for triggering the second cell to send SIB1.

[0396] Step 82: The network side detects the WUS sent by the UE on the WUS occasion; the network side sends SIB1 along the direction of the SSB associated with the occasion where the UE sends WUS or the directions of several nearby SSBs.

[0397] Step 83: After Y slots after the UE sends WUS, the UE starts to listen for the scheduling information of SIB1 on the first PDCCH Occasion that schedules SIB1 closest to it.

[0398] Among them, the listening duration for listening to SIB1 or the number of SIB1s listened to depends on the first information or the prior agreement of the protocol. For example, it is agreed that the terminal listens for X cycles, or listens for Y slots.

[0399] As an optional embodiment, before the second cell sends on-demand SIB1, it may send the first signal feedback information to the terminal, or may not send the first signal feedback information. Taking the first signal as WUS and the second cell sending WUS feedback information as an example, as Figure 9 shown, the method for the terminal to receive on-demand SIB1 includes:

[0400] Step 91: The UE obtains the first information from the first cell, and the first information includes the WUS configuration and the SIB1 sending configuration of the second cell after the WUS trigger is successful.

[0401] Step 92: The UE sends WUS (using a specific preamble) on the RO configured by the first information.

[0402] Step 93: The second cell receives the WUS and sends a simplified Msg2 (simplified Msg2) as the WUS feedback, and the UE receives the WUS feedback.

[0403] Step 94: The second cell sends SIB1, and the UE starts to listen for the scheduling information of SIB1 on the first PDCCH Occasion that schedules SIB1 closest to the moment when it receives the WUS feedback.

[0404] Among them, the listening duration for listening to SIB1 or the number of cycles for listening to SIB1 depends on the network side configuration or the prior agreement of the protocol.

[0405] As another optional embodiment, taking the case where the first signal feedback information is not sent before the second cell sends the on-demand SIB1 as an example, as Figure 10 shown, taking the first signal as WUS as an example, the method for a terminal to receive on-demand SIB1 includes:

[0406] Step 101: The UE obtains first information from the first cell, and the first information includes the WUS configuration and the SIB1 transmission configuration of the second cell after the WUS trigger is successful;

[0407] Step 102: The UE sends WUS (a specific preamble) on the SSB RO selected according to the measurement result;

[0408] Step 103: The second cell receives the WUS and sends SIB1 in the SSB direction associated with the RO selected by the UE; The UE starts listening to the Type 0 PDCCH associated with the SSB associated with the RO where the WUS is sent X ms after sending the WUS.

[0409] Among them, the listening duration for listening to SIB1 or the number of cycles for listening to SIB1 depends on the network side configuration or the prior agreement of the protocol.

[0410] Optionally, the direction for the second cell to send the feedback information of the first signal or the direction for sending the SIB1 PDCCH or the direction for sending the triggered SIB1 is related to the occasion when the UE sends the first signal:

[0411] Specifically: (1) If the occasion of the first signal is not mapped to the SSB, the sending direction of the feedback (feedback) / SIB1 PDCCH / SIB1 of the first signal by the second cell is a full-direction transmission;

[0412] (2) If the occasion of the first signal is mapped to the SSB, the sending direction of the first signal feedback / SIB1 PDCCH / SIB1 by the second cell is: the direction of the SSB associated with the occasion when the first signal is sent;

[0413] For example: The first signal is WUS, and the UE selects the occasion associated with the SSB index = 1 to send WUS, then the second cell sends the downlink WUS feedback / SIB1 PDCCH / SIB1 in the direction of the SSB index = 1;

[0414] (3) If the occasion of the first signal is mapped to the SSB, the transmission directions of the first signal feedback / SIB1 PDCCH / SIB1 sent by the second cell are: the directions of one or more SSBs near the SSB associated with the WSU occasion.

[0415] For example, if the first signal is WUS and the UE selects the occasion associated with SSB index = 1 to send WUS, the network side can send downlink WUS feedback / SIB1 PDCCH / SIB1 in the directions of SSB index = 0, 1, 2.

[0416] The following uses examples to illustrate the behavior of the terminal after sending the first signal.

[0417] After sending the first signal on the target resource, the UE performs a target operation according to the first information obtained from the first cell and / or the second cell. The first signal is used to trigger one or more second cells to send SIB1, and the SSBs of the second cells are sent normally. The target operations include:

[0418] (1) The UE starts to monitor the Type 0 PDCCH associated with the SSB corresponding to the RO where the first signal is sent.

[0419] (2) The UE starts to blindly detect the scheduling information of RMSI (or SIB1) using SI-RNTI within the Type 0 CSS corresponding to CORESET 0; or, the UE starts to blindly detect DCI 1_0 within the Type 0 CSS corresponding to CORESET 0.

[0420] In this embodiment, although the network side normally sends SSBs in the energy-saving state, SIB1 is not sent. Therefore, the UE does not need to monitor the Type 0 PDCCHs associated with these SSBs; after the UE meets the conditions to send the first signal, the UE is default to start monitoring the scheduling information of SIB1. Therefore, after the UE sends the first signal, it starts to blindly detect the scheduling information of RMSI (or SIB1) using SI-RNTI within the Type 0 CSS corresponding to the CORESET 0 associated with the SSB, or blindly detect DCI 1_0, and only monitors the Type 0 PDCCH associated with the SSB corresponding to the RO where the first signal is sent.

[0421] (3) The UE monitors the first signal feedback according to the first information or protocol agreement at the corresponding position. The monitoring position of the first signal feedback and the information content of the first signal eedback are not elaborated here.

[0422] (4) The UE does not monitor the DCI (Msg2) scrambled by the RA-RNTI.

[0423] In this embodiment, although the UE sends Msg1 (preamble), this preamble is only used to wake up the second cell and not for random access. Therefore, there is no need for Msg2 as the feedback of Msg1, and the UE does not need to monitor the DCI (Msg2) scrambled by the RA-RNTI.

[0424] (5) The UE monitors the DCI (MSg2) scrambled by the RA-RNTI.

[0425] In this embodiment, the UE sends Msg1 (preamble), but this preamble is only used to wake up the second cell and not for RACH. It is not necessary to execute all RACH procedures. The Msg2 or simplified Msg2 sent by the second cell can be used as a kind of first signal feedback. Therefore, the UE needs to monitor the DCI (Msg2) scrambled by the RA-RNTI to determine whether to directly receive SIB1 or retransmit the first signal next.

[0426] (6) After receiving the PDSCH (Msg2) with the RAR message, the UE does not send the PUSCH transmission (Msg3) scheduled by the RAR UL Grant.

[0427] In this embodiment, the UE sends Msg1 (preamble), but this preamble is only used to wake up the base station and not for RACH. It is not necessary to execute all RACH procedures. The Msg2 or simplified Msg2 sent by the second cell can be used as a simple first signal feedback. Therefore, after the terminal sends the first signal, it needs to monitor the DCI (Msg2) scrambled by the RA-RNTI, and after detecting the first signal feedback, it will not execute the remaining random access procedures. Therefore, the terminal will not send Msg3 anymore.

[0428] (7) The UE decides whether to retransmit the first signal according to the measurement results.

[0429] In this embodiment, if the UE does not receive the first signal feedback within the monitoring window, or does not detect the triggered successful SSB or SIB1, the UE can retransmit the first signal.

[0430] (8) The UE receives the on-demand SIB1 in type 1 CSS (that is, does not receive RAR but receives SIB1 instead); The traditional use of Type1 CSS is for receiving the PDCCH of RACH, and in this application, it can be used to receive the PDCCH scheduling SIB1.

[0431] (9) The UE receives the on-demand SIB1 within the SS dedicated to on-demand SIB1 reception; for example, a dedicated search space for NES is configured specifically for receiving the on-demand SIB1.

[0432] (10) The UE determines the RO validity of the second cell according to the TDD configuration of the second cell included in the first information;

[0433] In the existing solution, the RO validity is determined according to the following rules:

[0434] a: If the UE does not receive the tdd-UL-DL-Configuration, the RACH opportunity is valid when the following conditions are met;

[0435] The UE does not process the SSB in the RACH time slot corresponding to the RACH opportunity, and the RACH opportunity is at least Ngap symbols away from the nearest SSB in front; where, if the preamble SCS is 1.25KHz or 5KHz, or the preamble format is B4, Ngap is 0; if the preamble SCS is 15KHz, 30KHz, 60KHz or 120KHz, Ngap is 2.

[0436] b: If the UE receives the tdd-UL-DL-Configuration, the RACH opportunity is valid when one of the following conditions is met;

[0437] The RACH opportunity is within the UL symbol range;

[0438] The UE does not process the SSB in the RACH time slot corresponding to the RACH opportunity, and the RACH opportunity is at least Ngap symbols away from the nearest SSB in front, and the RACH opportunity is at least Ngap symbols away from the nearest DL symbol in front, then the RACH opportunity is valid. The value of Ngap is not elaborated here.

[0439] In the existing solution, the RO validity determination needs to avoid collisions with the time slots configured as uplink by the tdd-UL-DL-Configuration. However, before the UE obtains the SIB1 of the second cell, it is unable to obtain the tdd-UL-DL-Configuration of the second cell. Therefore, in this application, the tdd-UL-DL-Configuration of the second cell (or the target cell) can be provided by the first cell, and the UE determines which ROs are valid according to the tdd-UL-DL-Configuration of the second cell provided by the first cell.

[0440] (11) The UE determines a valid uplink occasion for transmitting the first signal according to the TDD configuration of the second cell included in the first information.

[0441] Embodiments of the present application provide UE behavior after the UE transmits the first signal, and the direction in which the network side transmits the SIB. The direction of transmitting the SIB is related to the RO of the UE transmitting the first signal, which can avoid the network side transmitting the SIB omnidirectionally and improve the accuracy of the UE receiving the SIB. The present application can carry the SIB transmission status information of the target cell in the SSB to help the UE determine whether it can trigger the target cell to transmit the SIB by transmitting the first signal.

[0442] As Figure 11 shown, embodiments of the present application further provide a method for triggering a cell to transmit an SSB and / or an SIB, which is executed by a second cell. The method includes:

[0443] Step 1101, the second cell receives a first signal sent by a terminal; the first signal is used to trigger the second cell to perform adjustments related to the SSB and / or the SIB;

[0444] Step 1102, the second cell performs the adjustments related to the SSB and / or the SIB.

[0445] In this embodiment, the terminal sends a first signal to the second cell, and the first signal is used to trigger the second cell to perform adjustments related to the SSB and / or the SIB. After receiving the first signal, the second cell can perform adjustments related to the SSB and / or the SIB.

[0446] Optionally, the first signal may be an uplink wake-up signal WUS sent by the UE, and the first signal may be in the form of a preamble sequence.

[0447] As an optional embodiment, the performing the adjustments related to the SSB and / or the SIB includes:

[0448] Adjusting from not transmitting the SSB to transmitting the SSB;

[0449] Adjusting from not transmitting the SIB to transmitting the SIB;

[0450] Adjusting from transmitting a long-period SSB to transmitting a short-period SSB;

[0451] Adjusting from transmitting a long-period SIB to transmitting a short-period SIB;

[0452] Adjusting from transmitting only the PSS and SSS to transmitting a normal SSB.

[0453] In this embodiment, after receiving the first signal, the second cell may perform one or more of the above adjustment operations. For example: the second cell originally does not transmit the SSB, and after receiving the first signal, it is adjusted to transmit the SSB; the second cell originally transmits the long-period SSB, and after receiving the first signal, it is adjusted to transmit the short-period SSB.

[0454] Optionally, after receiving the first signal sent by the terminal, the method further includes: sending first signal feedback information to the terminal.

[0455] In this embodiment, after receiving the first signal, the second cell may send first signal feedback information to the terminal, or may not send first signal feedback information.

[0456] Optionally, the first signal feedback information includes at least one of the following:

[0457] 1) Simplified Msg2, the Simplified Msg2 includes the Random Access Preamble Identifier (RAPID); the Simplified Msg2 may only include the RAPID, while the traditional Msg2 (Legacy Msg2) contains contents such as RAPID, TA command, Uplink Grant (UL grant), BI, etc.

[0458] 2) SSB index; the SSB index can be used to notify the UE that the transmission direction of the next SIB can refer to the transmission direction of the SSB index.

[0459] 3) RAPID; if the RAPID is the same as the ID of the preamble of the first signal sent by the terminal, the terminal considers that the first signal is successfully sent, and if it is different, the terminal considers that the first signal is sent failed.

[0460] 4) SIB direction information; for example, Quasi co-location (QCL) information, which is used to inform the terminal of the transmission direction of the next SIB.

[0461] 5) First indication information, which is used to indicate that the terminal does not need to send the first signal again, and the first indication information is DCI or a Media Access Control (MAC) Control Element (CE); this first indication information can be a dedicated first signal feedback (DCI), which is used to tell the terminal that the second cell has woken up and there is no need to send the first signal again. Optionally, it can be indicated by 1-bit information whether the current SIB is in the normal transmission state.

[0462] 6) The PDSCH carrying the SIB after the trigger is successful; the terminal can know the PDSCH of the SIB after the trigger is successful based on this feedback information.

[0463] 7) Type 0 Common Search Space PDCCH (Type 0 CSS PDCCH). The terminal can monitor the Type 0 CSS PDCCH based on this feedback information.

[0464] Optionally, the transmission direction of the first signal feedback information includes at least one of the following:

[0465] The direction of the SSB associated with the occasion when the terminal sends the first signal;

[0466] The direction of one or more adjacent SSBs of the SSB associated with the occasion when the terminal sends the first signal;

[0467] Omnidirectional.

[0468] In this embodiment, the second cell can send the feedback of the first signal according to the direction of the SSB associated with the occasion when the terminal sends the first signal; then the terminal can receive the feedback of the first signal in the direction of the SSB associated with the occasion when the first signal is sent; the second cell can send the feedback of the first signal according to the direction of one or more adjacent SSBs of the SSB associated with the occasion when the terminal sends the first signal, then the terminal can receive the feedback of the first signal in the direction of one or more adjacent SSBs of the SSB associated with the occasion when the first signal is sent; the second cell can send the feedback of the first signal omnidirectionally, then the terminal can receive the feedback of the first signal omnidirectionally.

[0469] As an optional embodiment, the method further includes:

[0470] Sending first information to the terminal, where the first information is used for the terminal to perform a target operation after sending a first signal to a second cell;

[0471] Wherein, the first information includes at least one of the following:

[0472] Second cell identifier;

[0473] Whether the second cell supports or does not support sending SIBs on demand;

[0474] Whether the second cell supports or does not support sending SSCs on demand;

[0475] TDD configuration of the second cell;

[0476] Unified Access Control (UAC) configuration;

[0477] Bar configuration for prohibiting cell residence;

[0478] The configuration of the first signal for triggering SSB transmission;

[0479] The configuration of the first signal for triggering SSB adjustment;

[0480] The configuration of the first signal for triggering SIB transmission;

[0481] The configuration of the first signal for triggering SIB adjustment;

[0482] The transmission condition information of the first signal;

[0483] The SIB configuration of the second cell after being successfully triggered by the first signal;

[0484] The SSB configuration of the second cell after being successfully triggered by the first signal.

[0485] In this embodiment, the first information corresponds to one or more second cells, and the first information can be configured by the second cell through broadcast information. Optionally, the first signal configuration is configured for each cell, or for each cell group.

[0486] Optionally, the SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0487] The period for transmitting SIB;

[0488] The control resource set 0 configuration;

[0489] The search space 0 configuration;

[0490] The type 0 PDCCH configuration;

[0491] The SIB listening window;

[0492] The time length for transmitting SIB;

[0493] The number of times for transmitting SIB;

[0494] The number of SIB transmission periods;

[0495] The frequency domain information of SIB;

[0496] The time domain information of SIB;

[0497] The transmission mode of SIB.

[0498] Optionally, the transmission mode of SIB includes at least one of the following:

[0499] The normal SIB transmission mode;

[0500] The simplified SIB transmission mode;

[0501] The aggregated SIB transmission mode;

[0502] Long - period transmission SIB mode.

[0503] Optionally, the SSB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0504] The frequency point for transmitting the SSB;

[0505] The time - domain index or time - domain position for transmitting the SSB;

[0506] The listening window of the SSB;

[0507] The time length for transmitting the SSB;

[0508] The number of times the SSB is transmitted;

[0509] The number of transmission cycles of the SSB;

[0510] The time - domain relationship between the triggered SSB and the SSB of the first carrier; the first carrier is the carrier used by the terminal for time - frequency reference synchronization for the second cell;

[0511] The frequency - domain relationship between the triggered SSB and the SSB of the first carrier;

[0512] The spatial - domain relationship between the triggered SSB and the SSB of the first carrier;

[0513] The time - domain position for transmitting the first SSB;

[0514] The transmission mode of the SSB.

[0515] Optionally, the transmission mode of the SSB includes at least one of the following:

[0516] Normal SSB transmission mode;

[0517] Simplified SSB transmission mode;

[0518] Aggregated SSB transmission mode;

[0519] Long - period SSB transmission mode.

[0520] As an optional embodiment, the first - signal configuration includes at least one of the following:

[0521] (1) Configuration for listening to the first - signal feedback information; the first - signal feedback information is, for example, the PDCCH of msg2;

[0522] Optionally, the configuration for listening to the first - signal feedback information includes at least one of the following:

[0523] Configuration of the control resource set for listening to the first - signal feedback information;

[0524] Search space configuration for listening to the first signal feedback information;

[0525] PDCCH configuration for listening to the first signal feedback information;

[0526] Time window for listening to the first signal feedback information;

[0527] Starting position for listening to the first signal feedback information.

[0528] (2) Transmission configuration of the first signal.

[0529] Optionally, the transmission configuration of the first signal includes at least one of the following:

[0530] 1) Signal synchronization reference configuration; it may include at least one of the following: SSB, CSI-RS, TRS, GPS timing, etc. of the first carrier.

[0531] 2) Signal form configuration; such as RACH, SRS, or PUCCH, etc.

[0532] 3) Signal time-domain resource configuration;

[0533] 4) Signal frequency-domain resource configuration;

[0534] 5) Signal sequence configuration; for example: including preamble index or preamble index range or preamble group index; for example: preamble grouping, indicating preamble group index, representing that this group of preambles is used to trigger the transmission of SSB of the second carrier or carrier group.

[0535] 6) Signal power configuration;

[0536] Optionally, the signal power configuration includes at least one of the following:

[0537] Initial signal power;

[0538] Climbing power step of the signal power;

[0539] Number of repetitions corresponding to each signal transmission;

[0540] Maximum number of repetitions for signal transmission.

[0541] 7) Signal spatial domain parameter configuration;

[0542] The signal spatial domain parameter configuration may include at least one of the following: the correspondence between the signal and the first carrier or the second carrier or the carrier group SSB; the configuration of the signal transmission timer (Timer). Wherein, the Timer is used to avoid overly frequent transmission of the first signal. After the first signal is transmitted, the Timer is started, and it is not allowed to repeatedly transmit the first signal before the Timer times out.

[0543] As an optional embodiment, the first signal sent by the receiving terminal includes:

[0544] The first signal sent by the receiving terminal on the target resource; wherein, the target resource is carried by the first information or agreed by the protocol.

[0545] Wherein, the target resource includes at least one of the following:

[0546] Resources for random access in the second cell; the second cell can send and receive the first signal on the resources for random access in the second cell;

[0547] Some timing in the resources for random access in the second cell; the second cell can receive the first signal at some timing in the resources for random access in the second cell;

[0548] One timing in the resources for random access in the second cell; the second cell can receive the first signal at one timing in the resources for random access in the second cell;

[0549] Resources only for receiving the first signal and not resources for random access in the second cell. Optionally, this resource is completely independent of the resources for random access in the second cell and is a resource dedicated to sending or receiving the first signal.

[0550] As an optional embodiment, when sending the SIB to the terminal, the transmission direction of the PDCCH of the SIB and / or the transmission direction of the SIB include at least one of the following:

[0551] The direction of the SSB associated with the timing when the terminal sends the first signal;

[0552] The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal;

[0553] Omnidirectional.

[0554] In this embodiment, the second cell may send the PDCCH and / or SIB of the SIB according to the direction of the SSB associated with the occasion when the terminal sends the first signal; then the terminal may receive the PDCCH and / or SIB of the SIB in the direction of the SSB associated with the occasion when the first signal is sent; the second cell may send the PDCCH and / or SIB of the SIB according to the direction of one or more SSBs adjacent to the SSB associated with the occasion when the terminal sends the first signal, then the terminal may receive the PDCCH and / or SIB of the SIB in the direction of one or more adjacent SSBs of the SSB associated with the occasion when the first signal is sent; the second cell may send the PDCCH and / or SIB of the SIB omnidirectionally, then the terminal may receive the PDCCH and / or SIB of the SIB omnidirectionally.

[0555] Optionally, the method further includes: sending an SSB to the terminal, and carrying second information in the SSB; the second information is used to indicate the sending status of the SIB of the second cell, and the sending status of the SIB of the second cell includes at least one of the following:

[0556] Sending SIB status;

[0557] Status of not sending SIB;

[0558] Supporting the on-demand sending SIB mode;

[0559] Not supporting the on-demand sending SIB mode.

[0560] It should be noted that the second cell in this embodiment may implement the technical solutions related to the second cell in the method embodiment executed by the terminal described above, and achieve the same or corresponding technical effects. To avoid repetition, it will not be elaborated here.

[0561] The embodiment of the present application provides the direction for the network side to send the SIB. The direction for sending the SIB is related to the RO of the UE to send the first signal, which can avoid the network side sending the SIB omnidirectionally and improve the accuracy of the UE to receive the SIB. The present application may carry the SIB sending status information of the target cell in the SSB to help the UE determine whether it can trigger the target cell to send the SIB by sending the first signal.

[0562] As Figure 12 shown, the embodiment of the present application also provides a method for triggering a cell to send an SSB and / or SIB, which is executed by the first cell, and the method includes:

[0563] Step 1201: The first cell sends the first information to the terminal, where the first information is used for the terminal to perform a target operation after sending a first signal to the second cell; the first signal is used to trigger the second cell to perform adjustments related to the synchronization signal block (SSB) and / or the system information block (SIB).

[0564] In this embodiment, the first cell sends the first information to the terminal, and the terminal can perform the target operation according to the first information after sending the first signal to the second cell. Among them, when the terminal sends the first signal to the second cell, after sending the first signal, it can perform the target operation according to the first information. The first signal is used to trigger one or more second cells to perform adjustments related to the SSB and / or the SIB.

[0565] Optionally, the first signal may be an uplink wake-up signal (WUS) sent by the UE, and the first signal may be in the form of a preamble sequence.

[0566] Optionally, the first information includes at least one of the following:

[0567] The second cell identifier;

[0568] Whether the second cell supports or does not support on-demand SIB transmission;

[0569] Whether the second cell supports or does not support on-demand SSB transmission;

[0570] The TDD configuration of the second cell;

[0571] The unified access control (UAC) configuration;

[0572] The prohibited cell reselection configuration;

[0573] The first signal configuration for triggering SSB transmission;

[0574] The first signal configuration for triggering SSB adjustment;

[0575] The first signal configuration for triggering SIB transmission;

[0576] The first signal configuration for triggering SIB adjustment;

[0577] The transmission condition information of the first signal;

[0578] The SIB configuration of the second cell after being successfully triggered by the first signal;

[0579] The SSB configuration of the second cell after being successfully triggered by the first signal.

[0580] In this embodiment, the first information corresponds to one or more second cells. The first information may be configured by the first cell through broadcast information display, or may default to the same content as the corresponding information of the first cell. Optionally, the first signal configuration is configured for each cell or for each cell group.

[0581] Optionally, the SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0582] The period of sending the SIB;

[0583] The control resource set 0 configuration;

[0584] The search space 0 configuration;

[0585] The type 0 PDCCH configuration;

[0586] The SIB listening window;

[0587] The time length of transmitting the SIB;

[0588] The number of times of sending the SIB;

[0589] The number of SIB transmission periods;

[0590] The frequency domain information of the SIB;

[0591] The time domain information of the SIB;

[0592] The SIB transmission mode.

[0593] Optionally, the SIB transmission mode includes at least one of the following:

[0594] The normal SIB transmission mode; it is the traditional SIB transmission mode compared to the simplified SIB transmission mode;

[0595] The simplified SIB transmission mode; for example, only the core configurations such as RACH are sent;

[0596] The aggregated SIB transmission mode; for example, there is no time domain gap between multiple SIBs;

[0597] The long-period SIB transmission mode, that is, the period of sending SIB1 is long.

[0598] Optionally, the SSB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0599] The frequency point of sending the SSB;

[0600] The time domain index or time domain position of sending the SSB;

[0601] Listening window of SSB;

[0602] Time length for transmitting SSB;

[0603] Transmission times of SSB;

[0604] Number of transmission periods of SSB;

[0605] Time domain relationship between the triggered SSB and the first carrier SSB; the first carrier is the carrier used by the terminal for time-frequency reference synchronization for the second cell;

[0606] Frequency domain relationship between the triggered SSB and the first carrier SSB;

[0607] Spatial domain relationship between the triggered SSB and the first carrier SSB;

[0608] Time domain position for transmitting the first SSB;

[0609] Transmission mode of SSB.

[0610] Optionally, the transmission mode of the SSB includes at least one of the following:

[0611] Normal SSB transmission mode; it is the traditional SSB transmission mode compared to the simplified SSB transmission mode;

[0612] Simplified SSB transmission mode; for example, only PSS and SSS are transmitted;

[0613] Aggregated SSB transmission mode; for example, there is no time domain gap between multiple SSBs;

[0614] Long-period SSB transmission mode; for example, the transmission period of the SSB in the second cell is long.

[0615] As an optional embodiment, the first signal configuration includes at least one of the following:

[0616] (1) Configuration for listening to the first signal feedback information; the first signal feedback information is, for example, the PDCCH of msg2;

[0617] Optionally, the configuration for listening to the first signal feedback information includes at least one of the following:

[0618] Configuration of the control resource set for listening to the first signal feedback information;

[0619] Configuration of the search space for listening to the first signal feedback information;

[0620] PDCCH configuration for listening to the first signal feedback information;

[0621] Listening window for the first signal feedback information;

[0622] Monitor the start position of the first signal feedback information.

[0623] (2) Transmission configuration of the first signal.

[0624] Optionally, the transmission configuration of the first signal includes at least one of the following:

[0625] 1) Signal synchronization reference configuration; it can include at least one of the following: SSB, CSI-RS, TRS, GPS timing (timing), etc. of the first carrier.

[0626] 2) Signal form configuration; such as RACH, SRS or PUCCH, etc.

[0627] 3) Signal time-domain resource configuration;

[0628] 4) Signal frequency-domain resource configuration;

[0629] 5) Signal sequence configuration; for example: including preamble index or preamble index range or preamble group index; for example: preamble grouping, indicating preamble group index, which means that this group of preambles is used to trigger the transmission of SSB of the second carrier or carrier group.

[0630] 6) Signal power configuration;

[0631] Optionally, the signal power configuration includes at least one of the following:

[0632] Initial signal power;

[0633] Climbing power step of signal power;

[0634] Number of repetitions corresponding to each signal transmission;

[0635] Maximum number of repetitions of signal transmission.

[0636] 7) Signal spatial domain parameter configuration;

[0637] The signal spatial domain parameter configuration can include at least one of the following: the correspondence between the signal and the SSB of the first carrier or the second carrier or the carrier group; the signal transmission timer (Timer) configuration. Among them, the Timer is used to avoid too frequent transmission of the first signal. After the first signal is transmitted, the Timer is started, and it is not allowed to repeat the transmission of the first signal before the Timer times out.

[0638] It should be noted that the first cell in this embodiment can implement all the technical solutions related to the first cell in the method embodiment executed by the terminal described above, and achieve the same or corresponding technical effects. To avoid repetition, details are not described herein again.

[0639] In an embodiment of the present application, the first cell sends first information to the terminal, so that the terminal can perform a target operation according to the first information after sending a first signal to the second cell. The first signal is used to trigger one or more second cells to perform adjustments related to SSB and / or SIB. After sending the first signal, the terminal can perform the target operation according to the first information from the first cell and / or the second cell, so as to ensure accurate reception of the SSB and / or SIB sent by the second cell.

[0640] In the method for triggering a cell to send SSB and / or SIB provided in the embodiment of the present application, the execution subject may be a device for triggering a cell to send SSB and / or SIB. In the embodiment of the present application, taking the device for triggering a cell to send SSB and / or SIB to execute the method for triggering a cell to send SSB and / or SIB as an example, the device for triggering a cell to send SSB and / or SIB provided in the embodiment of the present application is described.

[0641] As Figure 13 shown, the embodiment of the present application further provides a device 1300 for triggering a cell to send SSB and / or SIB, which is applied to a terminal. The device includes:

[0642] A first transceiver unit 1310, configured to send a first signal to the second cell;

[0643] A first processing unit 1320, configured to perform a target operation according to the first information from the first cell and / or the second cell;

[0644] Wherein, the first signal is used to trigger the second cell to perform adjustments related to SSB and / or SIB, and the first cell and the second cell are different cells;

[0645] The target operation includes at least one of the following:

[0646] Receiving the SSB and / or SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed by the protocol;

[0647] Receiving the SSB and / or SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried in the first signal feedback information;

[0648] Receiving the SSB and / or SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal;

[0649] Start monitoring type 0 PDCCH associated with the target SSB, where the target SSB is the SSB associated with the RO that sends the first signal;

[0650] Use SI-RNTI to blindly detect the scheduling information of RMSI within type 0 CSS corresponding to control resource set 0;

[0651] Blindly detect DCI 1_0 within type 0 CSS corresponding to control resource set 0;

[0652] Receive the first signal feedback information at a second location, where the second location is determined according to the configuration of the first signal or agreed by the protocol;

[0653] Skip detecting DCI scrambled by the random access RNTI;

[0654] Detect DCI scrambled by the random access RNTI;

[0655] Resend the first signal under a first condition, where the first condition includes: the terminal does not receive the second message Msg2 based on contention-based random access within the RAR time window;

[0656] Do not send the PUSCH transmission scheduled by the RAR uplink grant after receiving the PDSCH carrying the RAR message;

[0657] After receiving Msg2, do not send the third message Msg3 based on contention-based random access;

[0658] Receive the on-demand SIB within type 1 CSS;

[0659] Receive the on-demand SIB within the target search space, where the target search space is a search space dedicated to receiving the on-demand SIB;

[0660] Determine the validity of the RO of the second cell according to the time division duplex (TDD) configuration information of the second cell, where the TDD configuration information is from the first cell;

[0661] Determine the valid uplink timing for sending the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is from the first cell.

[0662] Optionally, the adjustment related to the SSB and / or SIB includes:

[0663] Adjust from never sending the SSB to sending the SSB;

[0664] Adjust from never sending the SIB to sending the SIB;

[0665] Adjust from transmitting long-period SSB to transmitting short-period SSB;

[0666] Adjust from transmitting long-period SIB to transmitting short-period SIB;

[0667] Adjust from transmitting only PSS and SSS to transmitting SSB.

[0668] Optionally, the relationship between the first cell and the second cell includes one of the following:

[0669] The first cell and the second cell are co-frequency cells;

[0670] The first cell and the second cell are different-frequency cells;

[0671] The first cell and the second cell belong to the same cell group;

[0672] The first cell and the second cell belong to the same Timing Advance Group (TAG);

[0673] The first cell and the second cell belong to the same tracking area.

[0674] Optionally, the device further includes:

[0675] A first acquisition unit, configured to acquire second information carried by the SSB sent by the second cell;

[0676] A first determination unit, configured to determine the transmission status of the SIB of the second cell according to the second information, where the transmission status of the SIB of the second cell includes at least one of the following:

[0677] Transmission SIB status;

[0678] Status of not transmitting SIB;

[0679] Support the on-demand SIB transmission mode;

[0680] Do not support the on-demand SIB transmission mode.

[0681] Optionally, the manner in which the SSB of the second cell carries the second information includes at least one of the following:

[0682] Indicated by the synchronization sequence included in the SSB of the second cell;

[0683] Indicated by an existing target field in the PBCH of the SSB of the second cell;

[0684] Indicated by the additional payload of the synchronization sequence included in the SSB of the second cell;

[0685] Indicated by the additional payload in the PBCH of the SSB of the second cell;

[0686] Implicitly indicated by the PBCH demodulation reference signal DMRS included in the SSB of the second cell; wherein, there is a mapping relationship between the DMRS sequence of the PBCH and the transmission status of the SIB or SSB.

[0687] Optionally, there is a one-to-one mapping relationship between the specific value of the existing target domain of the master system message block MIB carried by the PBCH and the transmission status of the SIB.

[0688] Optionally, the first information includes at least one of the following:

[0689] Second cell identifier;

[0690] Whether the second cell supports or does not support on-demand SIB transmission;

[0691] Whether the second cell supports or does not support on-demand SSB transmission;

[0692] TDD configuration of the second cell;

[0693] Unified access control UAC configuration;

[0694] Bar configuration for prohibiting cell residence;

[0695] First signal configuration for triggering SSB transmission;

[0696] First signal configuration for triggering SSB adjustment;

[0697] First signal configuration for triggering SIB transmission;

[0698] First signal configuration for triggering SIB adjustment;

[0699] Transmission condition information of the first signal;

[0700] SIB configuration of the second cell after being successfully triggered by the first signal;

[0701] SSB configuration of the second cell after being successfully triggered by the first signal.

[0702] Optionally, the SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0703] Period for transmitting the SIB;

[0704] Control resource set 0 configuration;

[0705] Search space 0 configuration;

[0706] Type 0 PDCCH configuration;

[0707] SIB monitoring window;

[0708] Time length for transmitting SIB;

[0709] Transmission times of SIB;

[0710] Number of transmission cycles of SIB;

[0711] Frequency domain information of SIB;

[0712] Time domain information of SIB;

[0713] Transmission mode of SIB.

[0714] Optionally, the transmission mode of the SIB includes at least one of the following:

[0715] Normal SIB transmission mode;

[0716] Simplified SIB transmission mode;

[0717] Aggregated SIB transmission mode;

[0718] Long period SIB transmission mode.

[0719] Optionally, the SSB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0720] Frequency point for transmitting SSB;

[0721] Time domain index or time domain position for transmitting SSB;

[0722] SSB monitoring window;

[0723] Time length for transmitting SSB;

[0724] Transmission times of SSB;

[0725] Number of transmission cycles of SSB;

[0726] Time domain relationship between the triggered SSB and the SSB of the first carrier; the first carrier is a carrier that can be used as a time-frequency reference synchronization for the second cell;

[0727] Frequency domain relationship between the triggered SSB and the SSB of the first carrier;

[0728] Spatial domain relationship between the triggered SSB and the SSB of the first carrier;

[0729] Time domain position for transmitting the first SSB;

[0730] Transmission mode of SSB.

[0731] Optionally, the transmission mode of the SSB includes at least one of the following:

[0732] Normal SSB transmission mode;

[0733] Simplified SSB transmission mode;

[0734] Aggregated SSB transmission mode;

[0735] Long-period SSB transmission mode.

[0736] Optionally, the first signal configuration includes at least one of the following:

[0737] Configuration for listening to the feedback information of the first signal;

[0738] Transmission configuration of the first signal.

[0739] Optionally, the configuration for listening to the feedback information of the first signal includes at least one of the following:

[0740] Configuration of the control resource set for listening to the feedback information of the first signal;

[0741] Search space configuration for listening to the feedback information of the first signal;

[0742] PDCCH configuration for listening to the feedback information of the first signal;

[0743] Time window for listening to the feedback information of the first signal;

[0744] Starting position for listening to the feedback information of the first signal.

[0745] Optionally, the transmission configuration of the first signal includes at least one of the following:

[0746] Signal synchronization reference configuration;

[0747] Signal form configuration;

[0748] Signal time-domain resource configuration;

[0749] Signal frequency-domain resource configuration;

[0750] Signal sequence configuration;

[0751] Signal power configuration;

[0752] Signal spatial domain parameter configuration.

[0753] Optionally, the signal power configuration includes at least one of the following:

[0754] Initial signal power;

[0755] Climbing power step of the signal power;

[0756] The number of repetitions corresponding to each transmitted signal;

[0757] The maximum number of repetitions of the transmitted signal.

[0758] Optionally, the first signal configuration is configured for each cell, or for each cell group.

[0759] Optionally, in the case where the target operation is to receive the SSB and / or SIB sent by the second cell at the first position, the first position includes at least one of the following:

[0760] After X time units after transmitting the first signal, where X>0;

[0761] After Y time units after receiving the feedback information of the first signal, where Y>0;

[0762] The time position determined according to the scheduling information of the SIB monitored at the third position, where the third position is the first PDCCH occasion for scheduling the SIB closest to the moment of transmitting the first signal;

[0763] The time position determined according to the scheduling information of the SIB monitored at the fourth position, where the fourth position is the first PDCCH occasion for scheduling the SIB closest to the moment of receiving the feedback information of the first signal;

[0764] Within the timing time of the first timer started after transmitting the first signal;

[0765] The time after the second timer started after transmitting the first signal times out;

[0766] Within the monitoring window opened after Z time units after transmitting the first signal, where Z>0;

[0767] Within the monitoring window opened after receiving the feedback information of the first signal;

[0768] Wherein, the values of X, Y, and Z are configured by the network side device, or agreed by the protocol or included in the first signal configuration;

[0769] The timing duration of the first timer and / or the second timer is configured by the network side device, or agreed by the protocol or included in the first signal configuration;

[0770] The start position, end position, and duration of the monitoring window are configured by the network side device, or agreed by the protocol or included in the first signal configuration.

[0771] Optionally, the values of at least one of X, Y, and Z include: predefined values and target offset values;

[0772] The target offset value is determined by the first SSB or SIB in the next SSB or SIB period sent by the second cell after the first signal is sent.

[0773] Optionally, when the target operation is to receive the first signal feedback information at the second location, the second location includes at least one of the following:

[0774] After Q time units after the first signal is sent, the value of Q is configured by the network side device, or agreed by the protocol or included in the first signal configuration;

[0775] The moment after the third timer started after the first signal is sent times out;

[0776] During the timing time of the fourth timer started after the first signal is sent;

[0777] Within the listening window started after the first signal is sent;

[0778] Wherein, the timing duration of the third timer and / or the fourth timer is configured by the network side device, or agreed by the protocol or included in the first signal configuration;

[0779] The start position, end position and duration of the listening window are configured by the network side device, or agreed by the protocol or included in the first signal configuration.

[0780] Optionally, the starting point of listening to the type 0 physical downlink control channel PDCCH includes at least one of the following:

[0781] The first PDCCH occasion after the first signal is sent;

[0782] The first PDCCH occasion after S time units after the first signal is sent, where S>0;

[0783] The first PDCCH occasion after T time units after the feedback information of the first signal is received, where T>0;

[0784] After the first signal is sent, the first symbol of the earliest control resource set for receiving the type 0 PDCCH;

[0785] After U time units after the first signal is sent, the first symbol of the earliest control resource set for receiving the type 0 PDCCH, where U>0;

[0786] After V time units after the feedback information of the first signal is received, the first symbol of the earliest control resource set for receiving the type 0 PDCCH, where V>0;

[0787] The moment after the fifth timer started after the first signal is sent times out;

[0788] The moment after receiving the first signal feedback information;

[0789] Wherein, the values of S, T, U, and V are configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration;

[0790] The timing duration of the fifth timer is configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration.

[0791] Optionally, the first transceiver unit is specifically configured to:

[0792] Send a first signal to a second cell according to a second condition;

[0793] Wherein, the second condition includes at least one of the following:

[0794] Perform cell reselection;

[0795] Perform cell selection;

[0796] After performing cell reselection or cell selection, the terminal needs to access the second cell, the second cell is a cell that supports on-demand SIB transmission, and the terminal receives a first signal configuration that triggers the second cell to send SIB;

[0797] The terminal receives a first signal configuration that triggers the second cell to send SIB;

[0798] The terminal receives a first signal configuration that triggers the second cell to send SIB, and the second cell supports on-demand SIB transmission;

[0799] The terminal receives a first signal configuration that triggers the second cell to send SIB, and the second cell is configured to prohibit residence;

[0800] The terminal receives a first signal configuration that triggers the second cell to send SIB, and the second cell is configured to prohibit residence, and the terminal needs to access the second cell;

[0801] The terminal receives a first signal configuration that triggers the second cell to send SIB, and the terminal cannot camp on the current cell;

[0802] The terminal receives a first signal configuration that triggers the second cell to send SIB, and the terminal cannot camp on the current cell, and the second cell is a suitable cell;

[0803] The terminal receives a first signal configuration that triggers the second cell to send SIB, and the terminal needs to send a Physical Random Access Channel (PRACH) on the second cell;

[0804] The terminal receives a first signal configuration for triggering the second cell to send the SIB, and the first information or the second information indicates that the second cell is in a state where the terminal is prohibited from camping;

[0805] The first cell does not meet the camping conditions, and the terminal receives a first signal configuration for triggering the second cell to send the SIB;

[0806] The terminal initiates random access;

[0807] The terminal determines that the first cell cannot be camped on, and the second cell is a suitable cell.

[0808] Optionally, the first transceiver unit is specifically configured to:

[0809] Send a first signal to the second cell on a target resource;

[0810] Wherein, the target resource includes at least one of the following:

[0811] Resources for random access of the second cell;

[0812] Some timing in the resources for random access of the second cell;

[0813] One timing in the resources for random access of the second cell;

[0814] Resources only for sending the first signal and not resources for random access of the second cell;

[0815] Wherein, the target resource is carried by the first information or is agreed upon by the protocol.

[0816] Optionally, the first transceiver unit is specifically configured to perform at least one of the following:

[0817] Select the RO corresponding to the SSB according to the reference signal measurement result of the second cell to send the first signal;

[0818] Send the first signal on the time domain resources dedicated to sending the first signal;

[0819] Send the first signal on the frequency domain resources dedicated to sending the first signal;

[0820] Send the first signal on the RO associated with the target SSB index, where the target SSB index is configured by the network device, or is agreed upon by the protocol or is included in the first signal configuration.

[0821] Optionally, the first signal feedback information includes at least one of the following:

[0822] Simplified Msg2, where the simplified Msg2 includes the random access preamble identifier RAPID;

[0823] SSB index;

[0824] RAPID;

[0825] Direction information of SIB;

[0826] The first indication information for indicating that the terminal does not need to send the first signal again, where the first indication information is DCI or a media access control (MAC) control element (CE);

[0827] The PDSCH carrying the SIB after the trigger is successful;

[0828] Type 0 common search space PDCCH.

[0829] Optionally, the receiving direction of the first signal feedback information includes at least one of the following:

[0830] The direction of the SSB associated with the timing when the terminal sends the first signal;

[0831] The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal;

[0832] Omnidirectional.

[0833] Optionally, when the terminal receives the SIB sent by the second cell, the receiving direction of the PDCCH of the SIB and / or the receiving direction of the SIB includes at least one of the following:

[0834] The direction of the SSB associated with the timing when the terminal sends the first signal;

[0835] The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal;

[0836] Omnidirectional.

[0837] Optionally, the SIB includes SIB1.

[0838] The device for triggering a cell to send an SSB and / or an SIB in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the above-listed terminal 11, and other devices may be a server, a network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0839] The device for triggering a cell to send an SSB and / or an SIB provided in the embodiments of the present application can achieve Figures 3 to 10The processes implemented by the method embodiments achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0840] As Figure 14 shown, an embodiment of the present application further provides a device 1400 for triggering a cell to send an SSB and / or an SIB, which is applied to a second cell. The device includes:

[0841] A second transceiver unit 1410, configured to receive a first signal sent by a terminal; the first signal is used to trigger the second cell to perform adjustments related to the SSB and / or the SIB.

[0842] A second processing unit 1420, configured to perform the adjustments related to the SSB and / or the SIB.

[0843] Optionally, the device further includes:

[0844] A third transceiver unit, configured to send first signal feedback information to the terminal.

[0845] Optionally, the device further includes:

[0846] A fourth transceiver unit, configured to send first information to the terminal, where the first information is used for the terminal to perform a target operation after sending the first signal to the second cell.

[0847] Wherein, the first information includes at least one of the following:

[0848] The second cell identifier;

[0849] Whether the second cell supports or does not support sending the SIB on demand;

[0850] Whether the second cell supports or does not support sending the SS on demand;

[0851] The TDD configuration of the second cell;

[0852] The unified access control (UAC) configuration;

[0853] The bar configuration for prohibiting cell residence;

[0854] The first signal configuration for triggering the SSB transmission;

[0855] The first signal configuration for triggering the SSB adjustment;

[0856] The first signal configuration for triggering the SIB transmission;

[0857] The first signal configuration for triggering the SIB adjustment;

[0858] The transmission condition information of the first signal;

[0859] SIB configuration of the second cell after being successfully triggered by the first signal;

[0860] SSB configuration of the second cell after being successfully triggered by the first signal.

[0861] Optionally, the SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0862] Period for sending SIB;

[0863] Control resource set 0 configuration;

[0864] Search space 0 configuration;

[0865] Type 0 PDCCH configuration;

[0866] SIB listening window;

[0867] Time length for transmitting SIB;

[0868] Number of times to send SIB;

[0869] Number of SIB transmission periods;

[0870] Frequency domain information of SIB;

[0871] Time domain information of SIB;

[0872] SIB transmission mode.

[0873] Optionally, the SIB transmission mode includes at least one of the following:

[0874] Normal SIB transmission mode;

[0875] Simplified SIB transmission mode;

[0876] Aggregated SIB transmission mode;

[0877] Long-period SIB transmission mode.

[0878] Optionally, the SSB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0879] Frequency point for sending SSB;

[0880] Time domain index or time domain position for sending SSB;

[0881] SSB listening window;

[0882] Time length for transmitting SSB;

[0883] Number of times to send SSB;

[0884] The number of SSB transmission periods;

[0885] The time-domain relationship between the triggered SSB and the SSB of the first carrier; the first carrier is the carrier used by the terminal for time-frequency reference synchronization of the second cell;

[0886] The frequency-domain relationship between the triggered SSB and the SSB of the first carrier;

[0887] The spatial-domain relationship between the triggered SSB and the SSB of the first carrier;

[0888] The time-domain position of sending the first SSB;

[0889] The SSB transmission mode.

[0890] Optionally, the SSB transmission mode includes at least one of the following:

[0891] Normal SSB transmission mode;

[0892] Simplified SSB transmission mode;

[0893] Aggregated SSB transmission mode;

[0894] Long-period SSB transmission mode.

[0895] Optionally, the first signal configuration includes at least one of the following:

[0896] Configuration for listening to the first signal feedback information;

[0897] Transmission configuration of the first signal.

[0898] Optionally, the configuration for listening to the first signal feedback information includes at least one of the following:

[0899] Configuration of the control resource set for listening to the first signal feedback information;

[0900] Search space configuration for listening to the first signal feedback information;

[0901] PDCCH configuration for listening to the first signal feedback information;

[0902] Time window for listening to the first signal feedback information;

[0903] Starting position for listening to the first signal feedback information.

[0904] Optionally, the transmission configuration of the first signal includes at least one of the following:

[0905] Signal synchronization reference configuration;

[0906] Signal form configuration;

[0907] Signal time-domain resource allocation;

[0908] Signal frequency-domain resource allocation;

[0909] Signal sequence configuration;

[0910] Signal power configuration;

[0911] Signal spatial-domain parameter configuration.

[0912] Optionally, the signal power configuration includes at least one of the following:

[0913] Initial signal power;

[0914] Ramp power step of the signal power;

[0915] Number of repetitions corresponding to each signal transmission;

[0916] Maximum number of repetitions of the transmitted signal.

[0917] Optionally, the second transceiver unit is specifically configured to:

[0918] Receive a first signal sent by a terminal on a target resource;

[0919] Wherein, the target resource includes at least one of the following:

[0920] Resources for random access in the second cell;

[0921] Some timing in the resources for random access in the second cell;

[0922] One timing in the resources for random access in the second cell;

[0923] Resources only for receiving the first signal and not being the resources for random access in the second cell.

[0924] Optionally, when sending an SIB to the terminal, the transmission direction of the PDCCH of the SIB and / or the transmission direction of the SIB include at least one of the following:

[0925] The direction of the SSB associated with the timing when the terminal sends the first signal;

[0926] The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal;

[0927] Omnidirectional.

[0928] Optionally, the transmission direction of the first signal feedback information includes at least one of the following:

[0929] The direction of the SSB associated with the timing when the terminal sends the first signal;

[0930] The direction of one or more adjacent SSBs associated with the timing when the terminal sends the first signal;

[0931] Omnidirectional.

[0932] Optionally, the first signal feedback information includes at least one of the following:

[0933] Simplified Msg2, where the simplified Msg2 includes RAPID;

[0934] SSB index;

[0935] RAPID;

[0936] Direction information of SIB;

[0937] The first indication information, used to indicate that the terminal does not need to send the first signal again, and the first indication information is DCI or MAC CE;

[0938] The PDSCH carrying the SIB after the trigger is successful;

[0939] Type 0 common search space PDCCH.

[0940] Optionally, the execution of the adjustment related to the SSB and / or SIB includes:

[0941] Changing from never sending the SSB to sending the SSB;

[0942] Changing from never sending the SIB to sending the SIB;

[0943] Changing from sending long-period SSBs to sending short-period SSBs;

[0944] Changing from sending long-period SIBs to sending short-period SIBs;

[0945] Changing from sending only PSS and SSS to sending normal SSBs.

[0946] The device for triggering the cell to send the SSB and / or SIB in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than the terminal. Exemplarily, the terminal can include, but is not limited to, the types of terminal 11 listed above, and other devices can be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0947] The device for triggering the cell to send the SSB and / or SIB provided by the embodiments of the present application can achieve Figure 11The processes implemented by the method embodiments achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0948] As Figure 15 shown, an embodiment of the present application further provides a device 1500 for triggering a cell to send an SSB and / or an SIB, which is applied to a first cell. The device includes:

[0949] A fifth transceiver unit 1510, configured to send first information to a terminal, where the first information is used for the terminal to perform a target operation after sending a first signal to a second cell; the first signal is used to trigger the second cell to perform adjustments related to a synchronization signal block (SSB) and / or a system information block (SIB).

[0950] Optionally, the first information includes at least one of the following:

[0951] A second cell identifier;

[0952] Whether the second cell supports or does not support sending the SIB on demand;

[0953] Whether the second cell supports or does not support sending the SSB on demand;

[0954] The TDD configuration of the second cell;

[0955] A unified access control (UAC) configuration;

[0956] A prohibited cell residence configuration;

[0957] A first signal configuration for triggering the SSB transmission;

[0958] A first signal configuration for triggering the SSB adjustment;

[0959] A first signal configuration for triggering the SIB transmission;

[0960] A first signal configuration for triggering the SIB adjustment;

[0961] Transmission condition information of the first signal;

[0962] The SIB configuration of the second cell after being successfully triggered by the first signal;

[0963] The SSB configuration of the second cell after being successfully triggered by the first signal.

[0964] Optionally, the SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[0965] The period for sending the SIB;

[0966] The control resource set 0 configuration;

[0967] The search space 0 configuration;

[0968] Type 0 PDCCH configuration;

[0969] SIB monitoring window;

[0970] Time length for transmitting SIB;

[0971] Transmission times of SIB;

[0972] Number of transmission cycles of SIB;

[0973] Frequency domain information of SIB;

[0974] Time domain information of SIB;

[0975] Transmission mode of SIB.

[0976] Optionally, after being successfully triggered by the first signal, the SSB configuration of the second cell includes at least one of the following:

[0977] Frequency point for transmitting SSB;

[0978] Time domain index or time domain position for transmitting SSB;

[0979] SSB monitoring window;

[0980] Time length for transmitting SSB;

[0981] Transmission times of SSB;

[0982] Number of transmission cycles of SSB;

[0983] Time domain relationship between the triggered SSB and the first carrier SSB; the first carrier is the carrier used by the terminal for time-frequency reference synchronization of the second cell;

[0984] Frequency domain relationship between the triggered SSB and the first carrier SSB;

[0985] Spatial domain relationship between the triggered SSB and the first carrier SSB;

[0986] Time domain position for transmitting the first SSB;

[0987] Transmission mode of SSB.

[0988] Optionally, the first signal configuration includes at least one of the following:

[0989] Configuration for monitoring the feedback information of the first signal;

[0990] Transmission configuration of the first signal.

[0991] Optionally, the configuration for monitoring the feedback information of the first signal includes at least one of the following:

[0992] Configuration of the control resource set for monitoring the first signal feedback information;

[0993] Configuration of the search space for monitoring the first signal feedback information;

[0994] PDCCH configuration of the first signal feedback information;

[0995] Time window for monitoring the first signal feedback information;

[0996] Starting position for monitoring the first signal feedback information.

[0997] Optionally, the transmission configuration of the first signal includes at least one of the following:

[0998] Signal synchronization reference configuration;

[0999] Signal form configuration;

[1000] Signal time-domain resource configuration;

[1001] Signal frequency-domain resource configuration;

[1002] Signal sequence configuration;

[1003] Signal power configuration;

[1004] Signal spatial domain parameter configuration.

[1005] Optionally, the signal power configuration includes at least one of the following:

[1006] Initial signal power;

[1007] Climbing power step of the signal power;

[1008] Number of repetitions corresponding to each signal transmission;

[1009] Maximum number of repetitions for transmitting the signal.

[1010] The device for triggering the cell to send SSB and / or SIB in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the above-mentioned terminal 11, and other devices may be a server, a network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[1011] The device for triggering the cell to send SSB and / or SIB provided in the embodiments of the present application can achieve Figure 12The various processes implemented by the method embodiments achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[1012] As Figure 16 shown, an embodiment of the present application further provides a communication device 1600, including a processor 1601 and a memory 1602. A program or instruction that can run on the processor 1601 is stored on the memory 1602. For example, when the communication device 1600 is a terminal, when the program or instruction is executed by the processor 1601, it implements the various steps of the method embodiment of triggering a cell to send an SSB and / or an SIB executed by the terminal, and can achieve the same technical effect. When the communication device 1600 is a network-side device, when the program or instruction is executed by the processor 1601, it implements the various steps of the method embodiment of triggering a cell to send an SSB and / or an SIB executed by the second cell or the first cell, and can achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[1013] An embodiment of the present application further provides a terminal, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the steps in the method embodiment as Figure 3 shown. This terminal embodiment corresponds to the above terminal-side method embodiment. The various implementation processes and implementation manners of the above method embodiment can all be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, Figure 17 is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[1014] The terminal 1700 includes, but is not limited to: at least some components such as a radio frequency unit 1701, a network module 1702, an audio output unit 1703, an input unit 1704, a sensor 1705, a display unit 1706, a user input unit 1707, an interface unit 1708, a memory 1709, and a processor 1710.

[1015] Those skilled in the art can understand that the terminal 1700 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1710 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 17 The terminal structure shown in does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[1016] It should be understood that in the embodiments of the present application, the input unit 1704 may include a Graphics Processing Unit (GPU) 17041 and a microphone 17042. The graphics processor 17041 processes the image data of static pictures or videos obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The display unit 1706 may include a display panel 17061, and the display panel 17061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 1707 includes at least one of a touch panel 17071 and other input devices 17072. The touch panel 17071 is also referred to as a touch screen. The touch panel 17071 may include two parts: a touch detection device and a touch controller. The other input devices 17072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here.

[1017] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 1701 may transmit it to the processor 1710 for processing; in addition, the radio frequency unit 1701 may send uplink data to the network-side device. Generally, the radio frequency unit 1701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[1018] The memory 1709 can be used to store software programs or instructions and various data. The memory 1709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1709 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1709 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[1019] The processor 1710 may include one or more processing units; optionally, the processor 1710 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1710.

[1020] Among them, the radio frequency unit 1701 is used to send a first signal to the second cell;

[1021] The processor 1710 is used to perform a target operation according to the first information from the first cell and / or the second cell;

[1022] Among them, the first signal is used to trigger the second cell to perform adjustments related to the synchronization signal block (SSB) and / or the system information block (SIB), and the first cell and the second cell are different cells;

[1023] The target operation includes at least one of the following:

[1024] Receiving the SSB and / or SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed by the protocol;

[1025] Receiving the SSB and / or SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried by the first signal feedback information;

[1026] Receiving the SSB and / or SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal;

[1027] Starting to monitor the type 0 physical downlink control channel PDCCH associated with the target SSB, where the target SSB is the SSB associated with the random access opportunity RO for sending the first signal;

[1028] Blind detecting the scheduling information of the remaining minimum system information RMSI using the system information radio network temporary identity SI-RNTI within the type 0 common search space CSS corresponding to the control resource set 0;

[1029] Blind detecting the downlink control information DCI 1_0 within the type 0 CSS corresponding to the control resource set 0;

[1030] Receiving the first signal feedback information at a second position, where the second position is determined according to the configuration of the first signal or agreed by the protocol;

[1031] Skipping the detection of the DCI scrambled by the random access RNTI;

[1032] Detecting the DCI scrambled by the random access RNTI;

[1033] Resending the first signal under a first condition, where the first condition includes: the terminal does not receive the second message Msg2 based on contention-based random access within the random access response RAR time window;

[1034] Not sending the physical uplink shared channel PUSCH transmission scheduled by the RAR uplink grant after receiving the physical downlink shared channel PDSCH carrying the RAR message;

[1035] Not sending the third message Msg3 based on contention-based random access after receiving Msg2;

[1036] Receiving the on-demand sent SIB within the type 1 CSS;

[1037] Receive the on-demand SIB in the target search space, where the target search space is a search space dedicated to receiving the on-demand SIB;

[1038] Determine the validity of the RO of the second cell according to the time-division duplex (TDD) configuration information of the second cell, where the TDD configuration information is from the first cell;

[1039] Determine the valid uplink timing for sending the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is from the first cell.

[1040] Optionally, the adjustment related to the synchronization signal block (SSB) and / or the system information block (SIB) includes:

[1041] Adjust from never sending the SSB to sending the SSB;

[1042] Adjust from never sending the SIB to sending the SIB;

[1043] Adjust from sending the long-period SSB to sending the short-period SSB;

[1044] Adjust from sending the long-period SIB to sending the short-period SIB;

[1045] Adjust from only sending the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) to sending the SSB.

[1046] Optionally, the relationship between the first cell and the second cell includes one of the following:

[1047] The first cell and the second cell are co-frequency cells;

[1048] The first cell and the second cell are different-frequency cells;

[1049] The first cell and the second cell belong to the same cell group;

[1050] The first cell and the second cell belong to the same timing advance group (TAG);

[1051] The first cell and the second cell belong to the same tracking area.

[1052] Optionally, the radio frequency unit 1701 is further configured to:

[1053] Obtain second information carried by the SSB sent by the second cell;

[1054] The processor 1710 is further configured to: determine the sending status of the SIB of the second cell according to the second information, where the sending status of the SIB of the second cell includes at least one of the following:

[1055] Send the SIB status;

[1056] Do not send the status of the SIB;

[1057] Support the on-demand SIB transmission mode;

[1058] Do not support the on-demand SIB transmission mode.

[1059] Optionally, the manner in which the SSB of the second cell carries the second information includes at least one of the following:

[1060] Indicated by the synchronization sequence included in the SSB of the second cell;

[1061] Indicated by an existing target field in the PBCH of the SSB of the second cell;

[1062] Indicated by an additional payload of the synchronization sequence included in the SSB of the second cell;

[1063] Indicated by an additional payload in the PBCH of the SSB of the second cell;

[1064] Implicitly indicated by the PBCH demodulation reference signal DMRS included in the SSB of the second cell; wherein, there is a mapping relationship between the DMRS sequence of the PBCH and the transmission status of the SIB or SSB.

[1065] Optionally, a specific value of an existing target field of the master system information block MIB carried by the PBCH has a one-to-one mapping relationship with the transmission status of the SIB.

[1066] Optionally, the first information includes at least one of the following:

[1067] Second cell identifier;

[1068] Whether the second cell supports or does not support on-demand SIB transmission;

[1069] Whether the second cell supports or does not support on-demand SSB transmission;

[1070] TDD configuration of the second cell;

[1071] Unified access control UAC configuration;

[1072] Bar configuration for prohibiting cell residence;

[1073] First signal configuration for triggering SSB transmission;

[1074] First signal configuration for triggering SSB adjustment;

[1075] First signal configuration for triggering SIB transmission;

[1076] Configuration of the first signal for triggering SIB adjustment;

[1077] Transmission condition information of the first signal;

[1078] SIB configuration of the second cell after being successfully triggered by the first signal;

[1079] SSB configuration of the second cell after being successfully triggered by the first signal.

[1080] Optionally, the SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[1081] Period for transmitting SIB;

[1082] Control resource set 0 configuration;

[1083] Search space 0 configuration;

[1084] Type 0 PDCCH configuration;

[1085] SIB listening window;

[1086] Time length for transmitting SIB;

[1087] Number of times to transmit SIB;

[1088] Number of SIB transmission periods;

[1089] Frequency domain information of SIB;

[1090] Time domain information of SIB;

[1091] Transmission mode of SIB.

[1092] Optionally, the transmission mode of SIB includes at least one of the following:

[1093] Normal SIB transmission mode;

[1094] Simplified SIB transmission mode;

[1095] Aggregated SIB transmission mode;

[1096] Long period SIB transmission mode.

[1097] Optionally, the SSB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following:

[1098] Frequency point for transmitting SSB;

[1099] Time domain index or time domain position for transmitting SSB;

[1100] SSB listening window;

[1101] The time length for transmitting the SSB;

[1102] The number of times the SSB is sent;

[1103] The number of SSB transmission periods;

[1104] The time-domain relationship between the triggered SSB and the SSB of the first carrier; the first carrier is a carrier that can be used as a time-frequency reference for synchronization of the second cell;

[1105] The frequency-domain relationship between the triggered SSB and the SSB of the first carrier;

[1106] The spatial-domain relationship between the triggered SSB and the SSB of the first carrier;

[1107] The time-domain position for sending the first SSB;

[1108] The SSB transmission mode.

[1109] Optionally, the SSB transmission mode includes at least one of the following:

[1110] Normal SSB transmission mode;

[1111] Simplified SSB transmission mode;

[1112] Aggregated SSB transmission mode;

[1113] Long-period SSB transmission mode.

[1114] Optionally, the first signal configuration includes at least one of the following:

[1115] Configuration for listening to the feedback information of the first signal;

[1116] Transmission configuration of the first signal.

[1117] Optionally, the configuration for listening to the feedback information of the first signal includes at least one of the following:

[1118] Configuration of the control resource set for listening to the feedback information of the first signal;

[1119] Search space configuration for listening to the feedback information of the first signal;

[1120] PDCCH configuration for listening to the feedback information of the first signal;

[1121] Time window for listening to the feedback information of the first signal;

[1122] Starting position for listening to the feedback information of the first signal.

[1123] Optionally, the transmission configuration of the first signal includes at least one of the following:

[1124] Signal synchronization reference configuration;

[1125] Signal form configuration;

[1126] Signal time-domain resource configuration;

[1127] Signal frequency-domain resource configuration;

[1128] Signal sequence configuration;

[1129] Signal power configuration;

[1130] Signal spatial domain parameter configuration.

[1131] Optionally, the signal power configuration includes at least one of the following:

[1132] Initial signal power;

[1133] Ramp power step of signal power;

[1134] Number of repetitions corresponding to each signal transmission;

[1135] Maximum number of repetitions of signal transmission.

[1136] Optionally, the first signal configuration is configured for each cell, or for each cell group.

[1137] Optionally, in the case where the target operation is to receive the SSB and / or SIB sent by the second cell at the first position, the first position includes at least one of the following:

[1138] After X time units after sending the first signal, where X>0;

[1139] After Y time units after receiving the feedback information of the first signal, where Y>0;

[1140] Time position determined according to the scheduling information of the SIB monitored at the third position, where the third position is the first PDCCH occasion that schedules the SIB closest to the moment of sending the first signal;

[1141] Time position determined according to the scheduling information of the SIB monitored at the fourth position, where the fourth position is the first PDCCH occasion that schedules the SIB closest to the moment of receiving the feedback information of the first signal;

[1142] Within the timing time of the first timer started after sending the first signal;

[1143] Time after the second timer started after sending the first signal times out;

[1144] Within a listening window that is opened Z time units after sending the first signal, where Z > 0;

[1145] Within a listening window that is opened after receiving feedback information of the first signal;

[1146] Among them, the values of X, Y, and Z are configured by the network side device, or agreed upon by the protocol, or included in the first signal configuration;

[1147] The timing duration of the first timer and / or the second timer is configured by the network side device, or agreed upon by the protocol, or included in the first signal configuration;

[1148] The start position, end position, and duration of the listening window are configured by the network side device, or agreed upon by the protocol, or included in the first signal configuration.

[1149] Optionally, the values of at least one of X, Y, and Z include: predefined values and target offset values;

[1150] The target offset value is determined by the first SSB or SIB of the next SSB or SIB period sent by the second cell after sending the first signal.

[1151] Optionally, in the case where the target operation is to receive the first signal feedback information at the second position, the second position includes at least one of the following:

[1152] After Q time units after sending the first signal, the value of Q is configured by the network side device, or agreed upon by the protocol, or included in the first signal configuration;

[1153] The moment after the third timer started after sending the first signal times out;

[1154] During the timing time of the fourth timer started after sending the first signal;

[1155] Within a listening window started after sending the first signal;

[1156] Among them, the timing duration of the third timer and / or the fourth timer is configured by the network side device, or agreed upon by the protocol, or included in the first signal configuration;

[1157] The start position, end position, and duration of the listening window are configured by the network side device, or agreed upon by the protocol, or included in the first signal configuration.

[1158] Optionally, the starting point of the time for listening to the type 0 physical downlink control channel PDCCH includes at least one of the following:

[1159] The first PDCCH opportunity after sending the first signal;

[1160] The first PDCCH occasion after S time units after sending the first signal, where S > 0;

[1161] The first PDCCH occasion after T time units after receiving the feedback information of the first signal, where T > 0;

[1162] The first symbol of the earliest control resource set for receiving type 0 PDCCH after sending the first signal;

[1163] The first symbol of the earliest control resource set for receiving type 0 PDCCH after U time units after sending the first signal, where U > 0;

[1164] The first symbol of the earliest control resource set for receiving type 0 PDCCH after V time units after receiving the first signal feedback information, where V > 0;

[1165] The moment after the timeout of the fifth timer started after sending the first signal;

[1166] The moment after receiving the feedback information of the first signal;

[1167] Wherein, the values of S, T, U, and V are configured by the network side device, or agreed by the protocol, or included in the first signal configuration;

[1168] The timing duration of the fifth timer is configured by the network side device, or agreed by the protocol, or included in the first signal configuration.

[1169] Optionally, the radio frequency unit 1701 is specifically configured to:

[1170] Send the first signal to the second cell according to the second condition;

[1171] Wherein, the second condition includes at least one of the following:

[1172] Performing cell reselection;

[1173] Performing cell selection;

[1174] After performing cell reselection or cell selection, the terminal needs to access the second cell, the second cell is a cell that supports sending SIB on demand, and the terminal receives the first signal configuration that triggers the second cell to send SIB;

[1175] The terminal receives the first signal configuration that triggers the second cell to send SIB;

[1176] The terminal receives the first signal configuration that triggers the second cell to send SIB, and the second cell supports sending SIB on demand;

[1177] The terminal receives a first signal configuration triggering the second cell to send the SIB, and the second cell is configured to prohibit residence.

[1178] The terminal receives a first signal configuration triggering the second cell to send the SIB, the second cell is configured to prohibit residence, and the terminal needs to access the second cell.

[1179] The terminal receives a first signal configuration triggering the second cell to send the SIB, and the terminal cannot reside in the current cell.

[1180] The terminal receives a first signal configuration triggering the second cell to send the SIB, the terminal cannot reside in the current cell, and the second cell is a suitable cell.

[1181] The terminal receives a first signal configuration triggering the second cell to send the SIB, and the terminal needs to send a Physical Random Access Channel (PRACH) on the second cell.

[1182] The terminal receives a first signal configuration for triggering the second cell to send the SIB, and the first information or the second information indicates that the second cell is in a state of prohibiting the terminal from residing.

[1183] The first cell does not meet the residence condition, and the terminal receives a first signal configuration for triggering the second cell to send the SIB.

[1184] The terminal initiates random access.

[1185] The terminal determines that the first cell cannot be resident, and the second cell is a suitable cell.

[1186] Optionally, the radio frequency unit 1701 is specifically configured to:

[1187] Send a first signal to the second cell on the target resource.

[1188] Wherein, the target resource includes at least one of the following:

[1189] Resources for random access of the second cell;

[1190] Some timing in the resources for random access of the second cell;

[1191] One timing in the resources for random access of the second cell;

[1192] Resources only for sending the first signal and not being resources for random access of the second cell;

[1193] Wherein, the target resource is carried by the first information or is agreed upon by the protocol.

[1194] Optionally, the radio frequency unit 1701 is specifically configured to perform at least one of the following:

[1195] Select the RO corresponding to the SSB according to the reference signal measurement result of the second cell and send the first signal;

[1196] Send the first signal on the time domain resource dedicated to sending the first signal;

[1197] Send the first signal on the frequency domain resource dedicated to sending the first signal;

[1198] Send the first signal on the RO associated with the target SSB index, where the target SSB index is configured by the network device, or agreed by the protocol or included in the first signal configuration.

[1199] Optionally, the first signal feedback information includes at least one of the following:

[1200] Simplified Msg2, where the simplified Msg2 includes the random access preamble identifier RAPID;

[1201] SSB index;

[1202] RAPID;

[1203] Direction information of the SIB;

[1204] The first indication information, which is used to indicate that the terminal does not need to send the first signal again, and the first indication information is DCI or a media access control MAC control element CE;

[1205] The PDSCH carrying the SIB after the trigger is successful;

[1206] Type 0 common search space PDCCH.

[1207] Optionally, the receiving direction of the first signal feedback information includes at least one of the following:

[1208] The direction of the SSB associated with the timing when the terminal sends the first signal;

[1209] The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal;

[1210] Omnidirectional.

[1211] Optionally, when the terminal receives the SIB sent by the second cell, the receiving direction of the PDCCH of the SIB and / or the receiving direction of the SIB includes at least one of the following:

[1212] The direction of the SSB associated with the timing when the terminal sends the first signal;

[1213] The direction of one or more adjacent SSBs associated with the timing when the terminal sends the first signal;

[1214] Omnidirectional.

[1215] Optionally, the SIB includes SIB1.

[1216] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the method for triggering the cell to send the SSB and / or SIB in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[1217] The embodiment of the present application further provides a network-side device. The network-side device can be the second cell or the first cell. The network-side device includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement as Figure 11 Or Figure 12 The steps shown in the method embodiment. This embodiment of the network-side device corresponds to the above-mentioned method embodiment of the network-side device. The various implementation processes and implementation manners of the above method embodiment can all be applied to this embodiment of the network-side device, and the same technical effect can be achieved.

[1218] Specifically, the embodiment of the present application further provides a network-side device. The network-side device can be the second cell or the first cell. As Figure 18 shown, the network-side device 1800 includes: an antenna 181, a radio frequency device 182, a baseband device 183, a processor 184, and a memory 185. The antenna 181 is connected to the radio frequency device 182. In the uplink direction, the radio frequency device 182 receives information through the antenna 181 and sends the received information to the baseband device 183 for processing. In the downlink direction, the baseband device 183 processes the information to be sent and sends it to the radio frequency device 182. The radio frequency device 182 processes the received information and then sends it out through the antenna 181.

[1219] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 183. The baseband device 183 includes a baseband processor.

[1220] The baseband device 183 can include, for example, at least one baseband board. A plurality of chips are provided on the baseband board. As Figure 18 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 185 through a bus interface to call the program in the memory 185 and execute the network device operations shown in the above method embodiment.

[1221] The network-side device may further include a network interface 186, which is, for example, a Common Public Radio Interface (CPRI).

[1222] Specifically, the network-side device 1800 in the embodiments of the present invention further includes instructions or programs stored in the memory 185 and executable on the processor 184. The processor 184 calls the instructions or programs in the memory 185 to execute Figure 14 or Figure 15 the methods executed by the modules shown, and achieves the same technical effects. To avoid repetition, they will not be elaborated here.

[1223] The embodiments of the present application further provide a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, the various processes of the method embodiments for triggering a cell to send an SSB and / or an SIB are implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[1224] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[1225] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the method embodiments for triggering a cell to send an SSB and / or an SIB, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[1226] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[1227] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the method embodiments for triggering a cell to send an SSB and / or an SIB, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[1228] An embodiment of the present application further provides a communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the method for triggering a cell to send an SSB and / or an SIB executed by the terminal as described above, and the network-side device can be used to execute the steps of the method for triggering a cell to send an SSB and / or an SIB executed by the second cell or the first cell as described above.

[1229] It should be noted that in this document, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[1230] Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, it can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing the terminal or the network-side device to execute the methods described in various embodiments of the present application.

[1231] The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit and scope protected by the claims of the present application, can also make many forms of embodiments, and these embodiments are all within the protection scope of the present application.

Claims

1. A method for triggering a cell to transmit an SSB and / or an SIB, characterized in that, Including: The terminal sends a first signal to a second cell; The terminal performs a target operation according to first information from a first cell and / or the second cell; Wherein, the first signal is used to trigger the second cell to perform adjustments related to a synchronization signal block (SSB) and / or a system information block (SIB), and the first cell and the second cell are different cells; The target operation includes at least one of the following: Receiving the SSB and / or SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed by the protocol; Receiving the SSB and / or SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried in the first signal feedback information; Receiving the SSB and / or SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal; Starting to monitor a type 0 physical downlink control channel (PDCCH) associated with a target SSB, where the target SSB is the SSB associated with the random access opportunity (RO) of sending the first signal; Blind detecting scheduling information of remaining minimum system information (RMSI) using a system information radio network temporary identity (SI-RNTI) within a type 0 common search space (CSS) corresponding to control resource set 0; Blind detecting a downlink control information (DCI) 1_0 within the type 0 CSS corresponding to control resource set 0; Receiving first signal feedback information at a second position, where the second position is determined according to the configuration of the first signal or agreed by the protocol; Skipping the detection of DCI scrambled by a random access RNTI; Detecting DCI scrambled by a random access RNTI; Resending the first signal under a first condition, where the first condition includes: the terminal does not receive a second message (Msg2) for contention-based random access within a random access response (RAR) time window; Not sending a physical uplink shared channel (PUSCH) transmission scheduled by a RAR uplink grant after receiving a physical downlink shared channel (PDSCH) carrying a RAR message; Not sending a third message (Msg3) for contention-based random access after receiving Msg2; Receiving on-demand sent SIB within a type 1 CSS; Receiving on-demand sent SIB within a target search space, where the target search space is a search space dedicated to receiving the on-demand sent SIB; Determining the validity of the RO of the second cell according to the time division duplex (TDD) configuration information of the second cell, where the TDD configuration information is from the first cell; Determining an effective uplink timing for sending the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is from the first cell.

2. The method according to claim 1, wherein The adjustments related to the synchronization signal block (SSB) and / or the system information block (SIB) include: Changing from not sending an SSB to sending an SSB; Changing from not sending an SIB to sending an SIB; Changing from sending a long-period SSB to sending a short-period SSB; Changing from sending a long-period SIB to sending a short-period SIB; Changing from only sending a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) to sending an SSB.

3. The method according to claim 1, wherein The relationship between the first cell and the second cell includes one of the following: The first cell and the second cell are co-frequency cells; The first cell and the second cell are different-frequency cells; The first cell and the second cell belong to the same cell group; The first cell and the second cell belong to the same Timing Advance Group (TAG); The first cell and the second cell belong to the same Tracking Area.

4. The method according to claim 1, wherein Before performing the target operation, the method further includes: Obtaining second information carried by the SSB sent by the second cell; Determining the transmission status of the SIB of the second cell according to the second information, where the transmission status of the SIB of the second cell includes at least one of the following: Transmission SIB status; Status of not transmitting SIB; Supporting on-demand SIB transmission mode; Not supporting on-demand SIB transmission mode.

5. The method according to claim 4, wherein The way that the SSB of the second cell carries the second information includes at least one of the following: Indicating through the synchronization sequence included in the SSB of the second cell; Indicating through the existing target field in the PBCH of the SSB of the second cell; Indicating through the additional payload of the synchronization sequence included in the SSB of the second cell; Indicating through the additional payload in the PBCH of the SSB of the second cell; Implicitly indicating through the PBCH Demodulation Reference Signal (DMRS) included in the SSB of the second cell; wherein, there is a mapping relationship between the DMRS sequence of the PBCH and the transmission status of the SIB or SSB.

6. The method according to claim 5, wherein A specific value of the existing target field of the Master System Information Block (MIB) carried by the PBCH has a one-to-one mapping relationship with the transmission status of the SIB.

7. The method according to claim 1, characterized in that, The first information includes at least one of the following: Second cell identifier; Whether the second cell supports or does not support on-demand SIB transmission; Whether the second cell supports or does not support on-demand SSB transmission; TDD configuration of the second cell; Unified Access Control (UAC) configuration; Bar configuration for prohibiting cell residence; First signal configuration for triggering SSB transmission; First signal configuration for triggering SSB adjustment; First signal configuration for triggering SIB transmission; First signal configuration for triggering SIB adjustment; Transmission condition information of the first signal; SIB configuration of the second cell after being successfully triggered by the first signal; SSB configuration of the second cell after being successfully triggered by the first signal.

8. The method according to claim 7, wherein The SIB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following: Period for transmitting SIB; Control Resource Set 0 configuration; Search Space 0 configuration; Type 0 PDCCH configuration; SIB listening window; Time length for transmitting SIB; Number of times for transmitting SIB; Number of SIB transmission cycles; Frequency domain information of SIB; Time domain information of SIB; Transmission mode of SIB.

9. The method according to claim 8, wherein The transmission mode of the SIB includes at least one of the following: Normal SIB transmission mode; Simplified SIB transmission mode; Aggregated SIB transmission mode; Long-period SIB transmission mode.

10. The method according to claim 7, characterized in that, The SSB configuration of the second cell after being successfully triggered by the first signal includes at least one of the following: Frequency point for transmitting SSB; The time domain index or time domain position for transmitting the SSB; The listening window of the SSB; The time length for transmitting the SSB; The number of times the SSB is transmitted; The number of SSB transmission periods; The time domain relationship between the triggered SSB and the SSB of the first carrier; The first carrier is a carrier that can be used as a time-frequency reference for synchronization in the second cell; The frequency domain relationship between the triggered SSB and the SSB of the first carrier; The spatial domain relationship between the triggered SSB and the SSB of the first carrier; The time domain position for transmitting the first SSB; The transmission mode of the SSB.

11. The method according to claim 10, wherein The transmission mode of the SSB includes at least one of the following: Normal SSB transmission mode; Simplified SSB transmission mode; Aggregated SSB transmission mode; Long-period SSB transmission mode.

12. The method according to claim 7, wherein The first signal configuration includes at least one of the following: Configuration for listening to the feedback information of the first signal; Transmission configuration of the first signal.

13. The method according to claim 12, wherein The configuration for listening to the feedback information of the first signal includes at least one of the following: Control resource set configuration for listening to the feedback information of the first signal; Search space configuration for listening to the feedback information of the first signal; PDCCH configuration for listening to the feedback information of the first signal; Time window for listening to the feedback information of the first signal; Starting position for listening to the feedback information of the first signal.

14. The method according to claim 12, wherein The transmission configuration of the first signal includes at least one of the following: Signal synchronization reference configuration; Signal form configuration; Signal time domain resource configuration; Signal frequency domain resource configuration; Signal sequence configuration; Signal power configuration; Signal spatial domain parameter configuration.

15. The method according to claim 14, wherein The signal power configuration includes at least one of the following: Initial signal power; Climbing power step of the signal power; Number of repetitions corresponding to each signal transmission; Maximum number of repetitions for signal transmission.

16. The method according to any one of claims 7, 12 - 15, characterized in that, The first signal configuration is configured for each cell, or for each cell group.

17. The method according to claim 1, wherein In the case where the target operation is to receive the SSB and / or SIB transmitted by the second cell at the first position, the first position includes at least one of the following: After X time units after transmitting the first signal, where X > 0; After Y time units after receiving the feedback information of the first signal, where Y > 0; Time position determined according to the scheduling information of the SIB monitored at the third position, where the third position is the first PDCCH opportunity for scheduling the SIB closest to the moment of transmitting the first signal; Time position determined according to the scheduling information of the SIB monitored at the fourth position, where the fourth position is the first PDCCH opportunity for scheduling the SIB closest to the moment of receiving the feedback information of the first signal; Within the timing time of the first timer started after transmitting the first signal; Time after the second timer times out after transmitting the first signal; Within the listening window opened after Z time units after transmitting the first signal, where Z > 0; Within the listening window opened after receiving the feedback information of the first signal; Wherein, the values of X, Y, and Z are configured by the network side device, or agreed upon by the protocol or included in the first signal configuration; The timing duration of the first timer and / or the second timer is configured by the network side device, or agreed upon by the protocol or included in the first signal configuration; The start position, end position, and duration of the monitoring window are configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration; The value of at least one of X, Y, and Z includes: a predefined value and a target offset value; The target offset value is determined by the first SSB or SIB of the next SSB or SIB period sent by the second cell after the first signal is sent.

18. The method according to claim 1, characterized in that, When the target operation is to receive the first signal feedback information at the second position, the second position includes at least one of the following: After Q time units after the first signal is sent, the value of Q is configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration; The moment after the third timer started after the first signal is sent times out; During the timing period of the fourth timer started after the first signal is sent; Within the monitoring window started after the first signal is sent; Wherein, the timing duration of the third timer and / or the fourth timer is configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration; The start position, end position, and duration of the monitoring window are configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration.

19. The method according to claim 1, wherein The time starting point for monitoring the type 0 physical downlink control channel PDCCH includes at least one of the following: The first PDCCH opportunity after the first signal is sent; The first PDCCH opportunity after S time units after the first signal is sent, where S > 0; The first PDCCH opportunity after T time units after the feedback information of the first signal is received, where T > 0; The first symbol of the earliest control resource set for receiving the type 0 PDCCH after the first signal is sent; The first symbol of the earliest control resource set for receiving the type 0 PDCCH after U time units after the first signal is sent, where U > 0; The first symbol of the earliest control resource set for receiving the type 0 PDCCH after V time units after the feedback information of the first signal is received, where V > 0; The moment after the fifth timer started after the first signal is sent times out; The moment after the feedback information of the first signal is received; Wherein, the values of S, T, U, and V are configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration; The timing duration of the fifth timer is configured by the network-side device, or agreed upon by the protocol, or included in the first signal configuration.

20. The method according to claim 1, characterized in that, Sending the first signal to the second cell includes: Sending the first signal to the second cell according to the second condition; Wherein, the second condition includes at least one of the following: Performing cell reselection; Performing cell selection; After performing cell reselection or cell selection, the terminal needs to access the second cell, the second cell is a cell that supports sending SIB on demand, and the terminal receives the first signal configuration that triggers the second cell to send SIB; The terminal receives the first signal configuration that triggers the second cell to send SIB; The terminal receives the first signal configuration that triggers the second cell to send SIB, and the second cell supports sending SIB on demand; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the second cell is configured to prohibit residence; The terminal receives a first signal configuration for triggering the second cell to send SIB, the second cell is configured to prohibit residence, and the terminal needs to access the second cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the terminal cannot camp on the current cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, the terminal cannot camp on the current cell, and the second cell is a suitable cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the terminal needs to send a Physical Random Access Channel (PRACH) on the second cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the first information or the second information indicates that the second cell is in a state of prohibiting the terminal from camping; The first cell does not meet the camping condition, and the terminal receives a first signal configuration for triggering the second cell to send SIB; The terminal initiates random access; The terminal determines that the first cell cannot be camped on, and the second cell is a suitable cell.

21. The method according to claim 1, wherein Sending the first signal to the second cell includes: Sending the first signal to the second cell on the target resource; Wherein, the target resource includes at least one of the following: Resources for random access of the second cell; Some time instants in the resources for random access of the second cell; One time instant in the resources for random access of the second cell; Resources only for sending the first signal and not the resources for random access of the second cell; Wherein, the target resource is carried by the first information or is agreed by the protocol.

22. The method according to claim 1, characterized in that, Sending the first signal to the second cell includes at least one of the following: Selecting the RO corresponding to the SSB according to the reference signal measurement result of the second cell to send the first signal; Sending the first signal on the time domain resource dedicated to sending the first signal; Sending the first signal on the frequency domain resource dedicated to sending the first signal; Sending the first signal on the RO associated with the target SSB index, where the target SSB index is configured by the network side device, or agreed by the protocol or included in the first signal configuration.

23. The method according to claim 1, characterized in that, The first signal feedback information includes at least one of the following: Simplified Msg2, the simplified Msg2 includes the Random Access Preamble Identifier (RAPID); SSB index; RAPID; Direction information of the SIB; The first indication information for indicating that the terminal does not need to send the first signal again, and the first indication information is DCI or a Medium Access Control (MAC) Control Element (CE); The Physical Downlink Shared Channel (PDSCH) carrying the SIB after the trigger is successful; Type 0 common search space Physical Downlink Control Channel (PDCCH).

24. The method according to claim 1, wherein The receiving direction of the first signal feedback information includes at least one of the following: The direction of the SSB associated with the time instant when the terminal sends the first signal; The direction of one or more adjacent SSBs of the SSB associated with the time instant when the terminal sends the first signal; Omnidirectional; In the case where the terminal receives the SIB sent by the second cell, the receiving direction of the PDCCH of the SIB and / or the receiving direction of the SIB includes at least one of the following: The direction of the SSB associated with the timing when the terminal sends the first signal; The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal; Omnidirectional.

25. A method for triggering a cell to send SSB and / or SIB, characterized in that, Including: The second cell receives the first signal sent by the terminal; The first signal is used to trigger the second cell to perform adjustments related to SSB and / or SIB; The second cell performs the adjustments related to SSB and / or SIB.

26. The method according to claim 25, wherein After receiving the first signal sent by the terminal, the method further includes: Sending first signal feedback information to the terminal.

27. The method according to claim 25, characterized in that The method further includes: Sending first information to the terminal, where the first information is used for the terminal to perform a target operation after sending the first signal to the second cell; Wherein, the first information includes at least one of the following: Second cell identifier; Whether the second cell supports or does not support sending SIB on demand; Whether the second cell supports or does not support sending SS on demand; TDD configuration of the second cell; Unified access control UAC configuration; Bar configuration for prohibiting cell residence; First signal configuration for triggering SSB transmission; First signal configuration for triggering SSB adjustment; First signal configuration for triggering SIB transmission; First signal configuration for triggering SIB adjustment; Transmission condition information of the first signal; SIB configuration of the second cell after being successfully triggered by the first signal; SSB configuration of the second cell after being successfully triggered by the first signal.

28. The method according to claim 25, wherein Receiving the first signal sent by the terminal includes: Receiving the first signal sent by the terminal on the target resource; Wherein, the target resource includes at least one of the following: Resources used by the second cell for random access; Some timings in the resources used by the second cell for random access; One timing in the resources used by the second cell for random access; Resources only used for receiving the first signal and not the resources used by the second cell for random access.

29. The method according to claim 25, wherein When sending SIB to the terminal, the transmission direction of the PDCCH of the SIB and / or the transmission direction of the SIB include at least one of the following: The direction of the SSB associated with the timing when the terminal sends the first signal; The direction of one or more adjacent SSBs of the SSB associated with the timing when the terminal sends the first signal; Omnidirectional.

30. The method according to claim 25, characterized in that, Performing the adjustments related to SSB and / or SIB includes: Changing from never sending SSB to sending SSB; Changing from never sending SIB to sending SIB; Changing from sending long-period SSB to sending short-period SSB; Changing from sending long-period SIB to sending short-period SIB; Changing from sending only PSS and SSS to sending normal SSB.

31. A method for triggering a cell to send an SSB and / or an SIB, characterized in that, Including: The first cell sends first information to the terminal, where the first information is used for the terminal to perform a target operation after sending the first signal to the second cell; the first signal is used to trigger the second cell to perform adjustments related to synchronization signal block SSB and / or system information block SIB.

32. The method according to claim 31, wherein The first information includes at least one of the following: Second cell identifier; Whether the second cell supports or does not support sending SIB on demand; Whether the second cell supports or does not support sending SSB on demand; TDD configuration of the second cell; Unified access control UAC configuration; Forbidden cell reselection configuration; First signal configuration for triggering SSB transmission; First signal configuration for triggering SSB adjustment; First signal configuration for triggering SIB transmission; First signal configuration for triggering SIB adjustment; Transmission condition information of the first signal; SIB configuration of the second cell after being successfully triggered by the first signal; SSB configuration of the second cell after being successfully triggered by the first signal.

33. A device for triggering a cell to transmit an SSB and / or an SIB, characterized in that, Including: A first transceiver unit for sending a first signal to a second cell; A first processing unit for performing a target operation according to first information from a first cell and / or a second cell; Wherein, the first signal is used to trigger the second cell to perform adjustments related to SSB and / or SIB, and the first cell and the second cell are different cells; The target operation includes at least one of the following: Receiving the SSB and / or SIB sent by the second cell at a first position, where the first position is determined according to the first information or agreed by the protocol; Receiving the SSB and / or SIB sent by the second cell in a first direction, where the first direction is the direction corresponding to the SSB index carried by the first signal feedback information; Receiving the SSB and / or SIB sent by the second cell in a second direction, where the second direction is the direction corresponding to the SSB associated with the timing of sending the first signal; Starting to monitor type 0 PDCCH associated with the target SSB, where the target SSB is the SSB associated with the RO that sends the first signal; Using SI-RNTI to blindly detect the scheduling information of RMSI within type 0 CSS corresponding to control resource set 0; Blindly detecting DCI 1_0 within type 0 CSS corresponding to control resource set 0; Receiving first signal feedback information at a second position, where the second position is determined according to the configuration of the first signal or agreed by the protocol; Skipping the detection of DCI scrambled by random access RNTI; Detecting DCI scrambled by random access RNTI; Resending the first signal under a first condition, where the first condition includes: the terminal does not receive the second message Msg2 based on contention-based random access within the RAR time window; Not sending the PUSCH transmission scheduled by the RAR uplink grant after receiving the PDSCH carrying the RAR message; Not sending the third message Msg3 based on contention-based random access after receiving Msg2; Receiving on-demand sent SIB within type 1 CSS; Receiving on-demand sent SIB within the target search space, where the target search space is a search space dedicated to receiving the on-demand sent SIB; Determining the validity of the RO of the second cell according to the time division duplex (TDD) configuration information of the second cell, where the TDD configuration information is from the first cell; Determining the effective uplink timing for sending the first signal according to the TDD configuration information of the second cell, where the TDD configuration information is from the first cell.

34. The apparatus according to claim 33, wherein The adjustments related to SSB and / or SIB include: Changing from not sending SSB to sending SSB; Changing from not sending SIB to sending SIB; Changing from sending long-period SSB to sending short-period SSB; Adjust from transmitting long - period SIBs to transmitting short - period SIBs; Adjust from transmitting only PSS and SSS to transmitting SSB.

35. The device according to claim 33, characterized in that, The device further includes: A first obtaining unit, configured to obtain second information, where the second information is carried by the SSB sent by the second cell; A first determining unit, configured to determine the transmission status of the SIB of the second cell according to the second information, where the transmission status of the SIB of the second cell includes at least one of the following: Transmission SIB status; Status of not transmitting SIB; Support for on - demand SIB transmission mode; Do not support on - demand SIB transmission mode.

36. The apparatus according to claim 33, wherein The first transceiver unit is specifically configured to: Send a first signal to the second cell according to a second condition; Wherein, the second condition includes at least one of the following: Perform cell reselection; Perform cell selection; After performing cell reselection or cell selection, the terminal needs to access the second cell, the second cell is a cell that supports on - demand SIB transmission, and the terminal receives a first signal configuration for triggering the second cell to send SIB; The terminal receives a first signal configuration for triggering the second cell to send SIB; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the second cell supports on - demand SIB transmission; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the second cell is configured to prohibit residence; The terminal receives a first signal configuration for triggering the second cell to send SIB, the second cell is configured to prohibit residence, and the terminal needs to access the second cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the terminal cannot camp on the current cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, the terminal cannot camp on the current cell, and the second cell is a suitable cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the terminal needs to send a physical random access channel PRACH on the second cell; The terminal receives a first signal configuration for triggering the second cell to send SIB, and the first information or the second information indicates that the second cell is in a state of prohibiting the terminal from camping; The first cell does not meet the camping condition, and the terminal receives a first signal configuration for triggering the second cell to send SIB; The terminal initiates random access; The terminal determines that the first cell cannot be camped on, and the second cell is a suitable cell.

37. The device according to claim 33, characterized in that, The first transceiver unit is specifically configured to: Send a first signal to the second cell on a target resource; Wherein, the target resource includes at least one of the following: Resources for random access of the second cell; Some time instants in the resources for random access of the second cell; One time instant in the resources for random access of the second cell; Resources only for sending the first signal and not the resources for random access of the second cell; Wherein, the target resource is carried by the first information or is agreed by the protocol.

38. A device for triggering a cell to send SSB and / or SIB, characterized in that, Includes: A second transceiver unit, configured to receive the first signal sent by the terminal; The first signal is used to trigger the second cell to perform SSB - and / or SIB - related adjustments, A second processing unit, configured to perform the SSB - and / or SIB - related adjustments.

39. The device according to claim 38, wherein The device further includes: A third transceiver unit, configured to send first signal feedback information to the terminal.

40. The device according to claim 38, characterized in that, The device further includes: A fourth transceiver unit, configured to send first information to the terminal, where the first information is used for the terminal to perform a target operation after sending a first signal to a second cell; Wherein, the first information includes at least one of the following: A second cell identifier; Whether the second cell supports or does not support sending System Information Blocks (SIBs) on demand; Whether the second cell supports or does not support sending Synchronization Signals (SSs) on demand; The Time Division Duplex (TDD) configuration of the second cell; Unified Access Control (UAC) configuration; Barred cell reselection configuration; A first signal configuration for triggering the transmission of a Synchronization Signal Block (SSB); A first signal configuration for triggering the adjustment of an SSB; A first signal configuration for triggering the transmission of an SIB; A first signal configuration for triggering the adjustment of an SIB; Transmission condition information of the first signal; The SIB configuration of the second cell after being successfully triggered by the first signal; The SSB configuration of the second cell after being successfully triggered by the first signal.

41. The device according to claim 38, characterized in that, The second transceiver unit is specifically configured to: Receive a first signal sent by the terminal on a target resource; Wherein, the target resource includes at least one of the following: Resources used for random access in the second cell; Some time instances among the resources used for random access in the second cell; One time instance among the resources used for random access in the second cell; Resources only used for receiving the first signal and not being the resources used for random access in the second cell.

42. A device for triggering a cell to send an SSB and / or an SIB, characterized in that, Includes: A fifth transceiver unit, configured to send first information to the terminal, where the first information is used for the terminal to perform a target operation after sending a first signal to a second cell; the first signal is used to trigger the second cell to perform adjustments related to a Synchronization Signal Block (SSB) and / or a System Information Block (SIB).

43. A terminal, characterized in that, Includes a processor and a memory, where the memory stores a program or instructions that can run on the processor, and when the program or instructions are executed by the processor, the steps of the method for triggering a cell to send an SSB and / or an SIB as described in any one of claims 1 to 27 are implemented.

44. A network-side device, characterized in that, Includes a processor and a memory, where the memory stores a program or instructions that can run on the processor, and when the program or instructions are executed by the processor, the steps of the method for triggering a cell to send an SSB and / or an SIB as described in any one of claims 28 to 43 are implemented, or the steps of the method for triggering a cell to send an SSB and / or an SIB as described in any one of claims 44 to 51 are implemented.

45. A readable storage medium, characterized in that, The program or instructions stored on the readable storage medium, when executed by the processor, implement the steps of the method for triggering a cell to send an SSB and / or an SIB as described in any one of claims 1 to 24, or implement the steps of the method for triggering a cell to send an SSB and / or an SIB as described in any one of claims 25 to 30, or implement the steps of the method for triggering a cell to send an SSB and / or an SIB as described in any one of claims 31 to 32.

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