Signal transmission methods and apparatuses, terminal and network side device

Abstract

Disclosed in the present application are signal transmission methods and apparatuses, a terminal and a network side device, belonging to the technical field of communications. A signal transmission method of the embodiments of the present application comprises: a terminal sending a target signal to a network side device of a first cell, the target signal being used for triggering the network side device of the first cell to send a system information block (SIB); the terminal receiving the SIB from the network side device of the first cell; and on the basis of the SIB, the terminal receiving the paging of the network side device of the first cell.

Description

Signal transmission method, device, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410165623.8 filed in China on February 5, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a signal transmission method, apparatus, terminal and network-side equipment. Background Art

[0004] Without network energy saving, network-side equipment in coverage cells, hotspot cells, or indoor small base stations needs to remain activated even when there is no service. For energy saving purposes, the network-side equipment in a cell can reduce some downlink transmissions, such as System Information Block 1 (SIB1), to achieve energy saving. However, after the network-side equipment in a cell reduces downlink transmissions, such as SIB1, further consideration is needed as to how user equipment (UE) can access or reside in the cell. Summary of the Invention

[0005] The embodiments of the present application provide a signal transmission method, apparatus, terminal, and network-side equipment to solve the problem of how to access or reside in a cell after the network-side equipment of the cell reduces downlink transmission.

[0006] In a first aspect, a signal transmission method is provided, comprising:

[0007] The terminal sends a target signal to a network side device of the first cell, where the target signal is used to trigger the network side device of the first cell to send a system information block SIB;

[0008] The terminal receives the SIB from a network side device of the first cell;

[0009] The terminal receives paging from a network side device of the first cell according to the SIB.

[0010] In a second aspect, a signal transmission method is provided, comprising:

[0011] A network side device of the first cell receives a target signal sent by a terminal device, where the target signal is used to trigger the network side device to send at least one of a system information block SIB and a paging signal;

[0012] The network side device of the first cell sends at least one of SIB and paging.

[0013] In a third aspect, a signal transmission device is provided, comprising:

[0014] A first sending module, configured to send a target signal to a network-side device of a first cell, where the target signal is used to trigger the network-side device of the first cell to send a system information block SIB;

[0015] The first receiving module is configured to receive the SIB from the network side device of the first cell; and receive paging from the network side device of the first cell according to the SIB.

[0016] In a fourth aspect, a signal transmission device is provided, comprising:

[0017] A second receiving module, configured for a network-side device of the first cell to receive a target signal sent by a terminal device, wherein the target signal is used to trigger the network-side device to send at least one of a system information block SIB and a paging signal;

[0018] The second sending module is configured to send at least one of the SIB and the paging.

[0019] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be 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.

[0020] In the sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to send a target signal to the network side device of the first cell, and the target signal is used to trigger the network side device of the first cell to send a system information block SIB; receive the SIB from the network side device of the first cell; and receive paging from the network side device of the first cell according to the SIB.

[0021] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0022] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used for the network side device of the first cell to receive a target signal sent by a terminal device, and the target signal is used to trigger the network side device to send at least one of a system information block SIB and paging; and send at least one of the SIB and paging.

[0023] In the ninth 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 are implemented, or the steps of the method described in the second aspect are implemented.

[0024] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein 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.

[0025] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0026] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product includes computer instructions, and the computer program / program product is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0027] In an embodiment of the present application, a target signal is sent to the network side device of the first cell through the terminal, and the target signal is used to trigger the network side device of the first cell to send a system information block SIB; the terminal receives the SIB from the network side device of the first cell; and the terminal receives the paging of the network side device of the first cell according to the SIB. The embodiment of the present application clarifies the interaction behavior between the terminal and the network side device of the first cell when the network side device of the first cell is in a low power consumption mode (for example, reducing downlink transmission), so that the terminal can access or reside in the first cell. Therefore, in the embodiment of the present application, the network side device can be in a low power consumption mode, reducing the power loss and resource overhead of the network side device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0029] FIG2 is a schematic flow chart of a signal transmission method provided in an embodiment of the present application;

[0030] FIG3 is a schematic diagram of a flow chart of another signal transmission method provided in an embodiment of the present application;

[0031] FIG4 is one of example diagrams of a scenario in which a signal transmission method is applied according to an embodiment of the present application;

[0032] FIG5 is a second example diagram of a scenario in which a signal transmission method is applied according to an embodiment of the present application;

[0033] FIG6 is a third example diagram of a scenario in which a signal transmission method is applied according to an embodiment of the present application;

[0034] FIG7 is a schematic flow chart of another signal transmission method provided in an embodiment of the present application;

[0035] FIG8 is a schematic structural diagram of a signal transmission device provided in an embodiment of the present application;

[0036] FIG9 is a schematic structural diagram of another signal transmission device provided in an embodiment of the present application;

[0037] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0038] FIG11 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0039] FIG12 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, 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 generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0041] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0042] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, 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 the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0043] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (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 (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may 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 (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0044] For ease of understanding, some of the contents involved in the embodiments of this application are described below:

[0045] Cell selection and cell reselection. In the cell selection and reselection process, cells can be divided into:

[0046] Acceptable cell: According to the S criterion, it can meet the minimum access requirements;

[0047] Suitable cell: A cell that can provide normal services to the UE according to the S criteria and to which the Public Land Mobile Network (PLMN) to which the cell belongs is consistent with the UE's subscription data.

[0048] Reserved cell: The cell is indicated as Reserved in the system information;

[0049] Barred cell: The cell is indicated as Barred in the system information.

[0050] The cell selection criterion may also be referred to as the S criterion.

[0051] During cell selection, the terminal needs to measure the channel quality of the cell being selected, even performing a channel quality assessment, to determine whether it meets the criteria for camping. This measurement criterion for cell selection is called the S criterion. If the channel quality and signal strength of a cell meet the S criterion, it may be selected as the camping cell. Meeting the S criterion requires that both Srxlev > 0 and Squal > 0. The power criterion is the received power (Srxlev > 0), and the quality criterion is the signal quality received during cell search (Squal > 0).

[0052] Srxlev=Q rxlevmeas –(Q rxlevmin +Q rxlevminoffset )–P compensation -Qoffset temp ;

[0053] Srxlev: cell selection receiving level value;

[0054] Q rxlevmeas : The received signal level value / signal strength (RSPR) of the measured cell;

[0055] Q rxlevmin (Network-side device configuration): Minimum cell receive level. Increasing this value for a cell makes it more difficult for the cell to meet the S criteria and become a suitable cell, making it more difficult for the UE to select the cell, and vice versa. This parameter should be set so that the selected cell can provide the signal quality requirements for basic services.

[0056] Q rxlevminoffset (Network-side device configuration): Cell minimum receive level offset. This parameter is used only when the UE is camping on a Visited Public Land Mobile Network (VPLMN) and cell selection is triggered by periodic searches for high-priority PLMNs. Increasing this value for a cell makes it more difficult for the cell to meet the S criterion and become a suitable cell, making it more difficult for the UE to select the cell, and vice versa.

[0057] P compensation (Network side equipment configuration): Used to punish UEs that cannot reach the maximum power of the cell. When the UE's maximum allowed transmit power is less than or equal to the maximum transmit power supported by the UE's capabilities, P compensation = 0. When the maximum allowed transmit power of the UE is greater than the maximum transmit power supported by the UE capability, P compensation = UE maximum allowed transmit power - UE capability supported maximum transmit power.

[0058] Qoffset temp(Network-side device configuration): The temporary offset applied to this cell. This value is configured with the ConnEstFailOffset parameter in the Radio Resource Control (RRC) and is used for connection failure control.

[0059] Squal=Q qualmeas –(Q qualmin +Q qualminoffset )-Qoffset temp ;

[0060] Squal: cell selection quality value;

[0061] Q qualmeas : Measured cell quality value (Reference Signal Received Quality, RSRQ);

[0062] Q qualmin (Network-side device configuration): Minimum received signal quality. This parameter indicates the minimum received signal quality required for reselection and is used to control the difficulty of cell reselection. This parameter is issued in SIB5. Increasing this value for a cell makes it more difficult for the cell to meet the S criterion and become a suitable cell, making it more difficult for the UE to select the cell, and vice versa.

[0063] Q qualminoffset (Network-side device configuration): Minimum received signal quality offset. This parameter indicates the minimum received signal quality offset for a cell and is applied to the cell selection criterion (S-criterion). This parameter is used only when the UE is residing in a VPLMN and cell selection is triggered by periodic searches for high-priority PLMNs. Increasing this value for a cell makes it more difficult for the cell to meet the S-criterion and become a suitable cell, making it more difficult for the UE to select the cell, and vice versa.

[0064] Qoffset temp Configured by network-side devices.

[0065] The cell reselection criterion may also be referred to as the R criterion.

[0066] When a UE is idle / inactive, after cell selection, it continuously monitors the signal quality of neighboring cells and the current cell in order to camp on a cell with higher priority or better channel quality. If the signal quality and rating of a neighboring cell meet the S criterion and certain reselection criteria, the UE will camp on that cell.

[0067] Measurement criteria for cell reselection:

[0068] After the UE successfully camps on the cell, it will continue to measure the cell. To minimize UE energy consumption caused by the measurement, the RRC layer calculates the S criterion based on the measured cell signal strength (RSRP) / RSRQ measurement results and compares it with the intra-frequency measurement start threshold (Sintrasearch) and the inter-frequency measurement start threshold (Snonintrasearch) as the decision condition for whether to start neighboring cell measurement.

[0069] The UE measures the serving cell signal and detects the serving cell signal strength Srxlev or quality Squal.

[0070] Intra-frequency measurement start criteria: Srxlev ≤ SintrasearchP or Squal ≤ SintrasearchQ.

[0071] Inter-frequency measurement startup criteria (for frequencies of the same or lower priority): Srxlev ≤ SnonintrasearchP or Squal ≤ SnonintrasearchQ.

[0072] During the reselection process, the network can control the UE's stay by setting the priority of different frequencies. The UE will select the cell with the best channel quality at a certain frequency to provide the best service. There are three ways for the UE to obtain the frequency priority information it needs to use:

[0073] (1) System information: For a certain frequency point, the corresponding absolute priority is provided in the system information;

[0074] (2) RRC Release message: If the frequency priority is provided by dedicated RRC signaling, the priority in the SI is ignored;

[0075] (3) Inherited from other RATs.

[0076] The reselection criteria (R criteria) for intra-frequency and inter-frequency cells of equal priority are defined as follows, where Rs is used for the serving cell and Rn is used for the neighboring cell;

[0077] Rs=Qmeas,s+Qhyst–Qoffsettemp;

[0078] Rn=Qmeas,n-Qoffset–Qoffsettemp;

[0079] Qmeas: RSRP measurement;

[0080] Qoffset: The offset between the target candidate cell and the current resident cell. It is used to adjust the difficulty of reselection and reduce the ping-pong effect. When other parameters remain constant, increasing the offset increases the difficulty of reselecting same-frequency or same-priority cells, and vice versa. For same-frequency reselection, this parameter is equal to inter-cell Qoffsets,n (inter-cell Qoffsets,n exists in the system broadcast) or 0 (inter-cell Qoffsets,n does not exist in the system broadcast). For inter-frequency reselection, this parameter is equal to 'inter-frequency Qoffsetfrequency + inter-cell Qoffsets,n' (inter-cell Qoffsets,n exists in the system broadcast) or 'inter-frequency Qoffsetfrequency' (inter-cell Qoffsets,n does not exist in the system broadcast).

[0081] Qhyst: Hysteresis value of the serving cell measurement. This parameter is related to the slow fading characteristics of the cell environment. A larger slow fading variance indicates a larger hysteresis value. A larger hysteresis value also increases the serving cell boundary, making it more difficult to reselect to a neighboring cell. This value is used to adjust the reselection difficulty and reduce the ping-pong effect. An excessively large value can lead to delayed reselection. If the terminal initiates a connection at this time, RRC connection establishment may fail.

[0082] The signal transmission method provided in the embodiments of the present application is described in detail below through some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0083] 2 , an embodiment of the present application provides a signal transmission method. As shown in FIG2 , the signal transmission method includes:

[0084] Step 201: The terminal sends a target signal to a network-side device of a first cell, where the target signal is used to trigger the network-side device of the first cell to send a system information block (SIB).

[0085] Step 202: The terminal receives the SIB from a network-side device of the first cell;

[0086] Step 203: The terminal receives paging from the network side device of the first cell according to the SIB.

[0087] In the embodiment of the present application, after the network side device of the first cell receives the target signal, it can send SIB according to the target signal and send paging when a service arrives.

[0088] It should be understood that after receiving the SIB, the first terminal may receive paging according to the paging configuration in the SIB. Receiving paging may be understood as camping on the first cell, that is, the terminal camps on the first cell after receiving the SIB.

[0089] In some embodiments, the terminal is camped in other cells when sending the target signal.

[0090] In some embodiments, the terminal is not camped in any cell when sending the target signal and is an initial search UE.

[0091] In some embodiments, the target signal may be an uplink wake-up signal.

[0092] It should be noted that before the network side device of the first cell receives the target signal, the network side device of the first cell is in a low power consumption mode, which can be referred to as an energy-saving mode or a sleep mode. The low power consumption mode can also be referred to as a low power consumption state, the energy-saving mode can also be referred to as an energy-saving state, and the sleep mode can also be referred to as a sleep state. When the network side device of the first cell performs the first behavior, the network side device of the first cell is in a non-low power consumption mode or state, for example, in an awake mode or state, or in an activated state.

[0093] In an embodiment of the present application, a target signal is sent to the network side device of the first cell through the terminal, and the target signal is used to trigger the network side device of the first cell to send a system information block SIB; the terminal receives the SIB from the network side device of the first cell; and the terminal receives the paging of the network side device of the first cell according to the SIB. The embodiment of the present application clarifies the interaction behavior between the terminal and the network side device of the first cell when the network side device of the first cell is in a low power consumption mode (for example, reducing downlink transmission), so that the terminal can access or reside in the first cell. Therefore, in the embodiment of the present application, the network side device can be in a low power consumption mode, reducing the power loss and resource overhead of the network side device.

[0094] Optionally, in some embodiments, the terminal sending the target signal to the network side device of the first cell includes:

[0095] The terminal sends a target signal to a network side device of the first cell based on a first criterion;

[0096] The first criterion includes at least one of the following:

[0097] The second cell does not meet the S criterion;

[0098] The first cell satisfies the S criterion;

[0099] The signal strength of the second cell measured by the terminal is lower than or equal to a first preset threshold;

[0100] The signal quality of the second cell measured by the terminal is lower than or equal to a second preset threshold;

[0101] The signal strength of the first cell measured by the terminal is higher than or equal to a third preset threshold;

[0102] The signal quality of the first cell measured by the terminal is higher than or equal to a fourth preset threshold;

[0103] The difference between the signal strength of the first cell and the signal strength of the second cell measured by the terminal is greater than or equal to a fifth preset threshold;

[0104] The difference between the signal quality of the first cell and the signal quality of the second cell measured by the terminal is greater than or equal to a sixth preset threshold;

[0105] The terminal has a service that needs to be sent;

[0106] The terminal upper layer requests to establish an RRC connection;

[0107] The terminal is paged;

[0108] The frequency priority of the first cell is higher than that of the second cell;

[0109] A difference between the signal quality of the first cell and the target offset value is greater than or equal to a seventh preset threshold;

[0110] The difference between the signal strength of the first cell and the target offset value is greater than or equal to an eighth preset threshold;

[0111] The first cell supports on-demand triggering of SIB 1;

[0112] The first cell does not send SIB 1;

[0113] The first cell is a suitable cell;

[0114] The synchronization signal block (Synchronization Signal Block, SSB) of the first cell is indicated as a non-cell definition synchronization signal block (Narrowband Cell Discovery Synchronization Signal Block, NCD-SSB);

[0115] The public land mobile network PLMN list of the first cell includes the PLMN registered by the terminal;

[0116] The cell priority of the first cell is higher than the cell priority of a third cell, the third cell is a neighboring cell having the same R value as the first cell, and the R value is determined based on an R criterion;

[0117] The R value of the first cell is one of the first X R values ​​of a plurality of R values ​​sorted in descending order, and the plurality of R values ​​are R values ​​obtained by the terminal by calculating the plurality of neighboring cells based on the R criterion;

[0118] When the cell is a network energy-saving cell, the R value of the cell is calculated as follows: R value = Qmeas,n-Qoffset-Qoffsettemp+OFFSET, where Qmeas,n represents the signal measurement result of the cell, Qoffset and Qoffsettemp are offset values ​​configured by the network side device, and OFFSET is an offset value dedicated to the network energy-saving cell.

[0119] In the embodiment of the present application, the above-mentioned signal strength can be understood or replaced by Reference Signal Receiving Power (RSRP), and the above-mentioned signal quality can be understood or replaced by Reference Signal Receiving Quality (RSRQ).

[0120] Optionally, a network energy-saving cell refers to a cell that adopts energy-saving technologies such as on-demand SIB1 technology, on-demand SSB technology, SSB adaptation technology, and PRACH adaptation technology.

[0121] Optionally, the first preset threshold and the second preset threshold may include at least one of the following:

[0122] the minimum reception level of the second cell;

[0123] the minimum receiving level of the second cell plus an offset value, a compensation value, or a correction term;

[0124] The absolute threshold value at which the second cell can reside;

[0125] The absolute threshold value at which the second cell can reside plus an offset value or a compensation value or a correction term;

[0126] Dedicated to determining the threshold value for sending a wake-up signal (WUS);

[0127] The first threshold value dedicated to the network energy saving feature;

[0128] The sum of one or more offset values ​​of the current S criterion (including Qrxlevmeas, Qrxlevmin, Qrxlevminoffset, Pcompensation, Qoffsettemp, Qqualmin, Qqualminoffset).

[0129] Optionally, the above-mentioned offset value, compensation value or correction term may be a positive value or a negative value.

[0130] Optionally, the third preset threshold and the fourth preset threshold may include at least one of the following:

[0131] the minimum reception level of the first cell;

[0132] The minimum receiving level of the first cell plus an offset value, a compensation value, or a correction term;

[0133] An absolute threshold value at which the first cell can reside;

[0134] An absolute threshold value at which the first cell may reside plus an offset value or a compensation value or a correction term;

[0135] Dedicated to judging the threshold value of WUS transmission;

[0136] Threshold value dedicated to Network energy saving (NES) cells;

[0137] The sum of one or more offset values ​​of the current S criterion.

[0138] Optionally, the threshold value dedicated to the NES cell may be configured for the terminal through the second cell, or may be pre-agreed upon in a protocol.

[0139] Optionally, for a service that needs to be sent by the terminal, for example, an upper layer of the terminal establishes an RRC connection, indicating that the terminal has a service that needs to be sent.

[0140] Optionally, the terminal being paged can be understood or replaced by: the UE being paged (paging), or having a service to receive.

[0141] Optionally, in some embodiments, at least one of the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold, the sixth preset threshold, the seventh preset threshold, and the eighth preset threshold satisfies at least one of the following:

[0142] Determined by the protocol or configured by network-side devices;

[0143] A threshold dedicated to network energy-saving cells;

[0144] A threshold is configured with at least two threshold values, and different threshold values ​​correspond one-to-one to different types of target signals, wherein different types of target signals are used to trigger different functions;

[0145] A threshold is configured with a first type threshold value and a second type threshold value. The first type threshold value is associated with a service sending of a terminal, and the second type threshold value is not associated with a service sending of a terminal.

[0146] In the embodiment of the present application, for any one of the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold, the sixth preset threshold, the seventh preset threshold, and the eighth preset threshold, multiple thresholds may be configured, each corresponding to a WUS of different WUS purposes. For example, when the WUS is used to trigger on-demand SIB1, the first threshold value is A, and when the WUS is used to trigger paging adaptation, the first threshold value is B.

[0147] Optionally, in some embodiments, when a threshold is configured with a first type threshold value and a second type threshold value, the first type threshold value may be referenced when the terminal has service transmission, and the second type threshold value may be referenced when the terminal has no service transmission, wherein the first type threshold value is higher than the second type threshold value. In some embodiments, a WUS (i.e., target signal) may be triggered as long as the reference signal measurement result of the resident cell is lower than the corresponding threshold value.

[0148] Optionally, in some embodiments, the method further comprises:

[0149] The terminal determines whether the first cell is a suitable cell based on at least one of the following:

[0150] a measurement result of a reference signal of the first cell;

[0151] the PLMN of the first cell;

[0152] SIB1 triggered by the first cell;

[0153] The PLMN of the first cell is obtained from the second cell, or the PLMN of the first cell is the same as the PLMN of the second cell by default.

[0154] Optionally, in some embodiments, the method further comprises:

[0155] The terminal receives measurement configuration information of at least one cell, where the measurement configuration information is used to send the target signal, and the measurement configuration information includes at least one of the following:

[0156] Sharing the neighboring cell measurement configuration of the second cell;

[0157] Cell measurement configuration for each frequency layer (Per frequency layer);

[0158] Cell measurement configuration for each cell (Per cell);

[0159] Independent cell measurement configuration.

[0160] In an embodiment of the present application, the measurement configuration information used to send the target signal can be understood as the measurement configuration information being used to determine at least one of whether to send the target signal and how to send (for example, at what resource location to send) the target signal.

[0161] Optionally, the terminal may perform cell measurement according to the measurement configuration information, obtain a measurement result, and determine whether to send the target signal based on the measurement result. The terminal may also determine how to send the target signal according to the configuration of the target signal in the measurement configuration information.

[0162] Optionally, the neighboring cell measurement configuration of the shared second cell may be understood to be the same as the measurement configuration of the second cell. The terminal may determine whether a cell meets the first condition based on the content of the measurement signal in the neighboring cell measurement configuration.

[0163] Optionally, in some embodiments, the cell measurement configuration for each frequency layer includes at least one of the following:

[0164] A list of neighboring cells that meet the first condition on the frequency layer;

[0165] first indication information, where the first indication information is used to indicate whether all cells on the frequency layer meet a first condition;

[0166] Configuration of target signals corresponding to cells on the frequency layer.

[0167] Optionally, in some embodiments, if the target signal corresponding to the cell on the frequency layer is not configured, it can be understood that the cell on the frequency layer is a normal cell, that is, the cell that does not have the target signal configured on a certain frequency layer is a cell that normally sends SIB1.

[0168] Optionally, in some embodiments, the cell measurement configuration for the cell includes at least one of the following:

[0169] second indication information, where the second indication information is used to indicate whether the cell meets the first condition;

[0170] Configuration of the target signal corresponding to the cell.

[0171] Optionally, in some embodiments, if the target signal configuration corresponding to the cell is not configured, it can be understood that the cell is a normal cell, that is, the cell without the target signal configuration is a cell that normally sends SIB1.

[0172] Optionally, in some embodiments, the independent cell measurement configuration may include at least one of the following:

[0173] Frequency associated with the cell measurement configuration;

[0174] The cell measurement configuration is associated with the cell;

[0175] The target signal configuration corresponding to the cell associated with the cell measurement configuration;

[0176] Thresholds related to measurement result decisions;

[0177] The thresholds related to the measurement result decision include a high-priority cell reselection threshold, a low-priority cell reselection threshold, and a same-frequency or same-priority cell reselection threshold.

[0178] Optionally, the cell associated with the cell measurement configuration in the target signal configuration corresponding to the cell associated with the cell measurement configuration meets the first condition.

[0179] Optionally, in some embodiments, the first condition includes at least one of the following:

[0180] The system information block needs to send a target signal to obtain;

[0181] The synchronization signal block SSB sent by the cell is indicated as NCD-SSB;

[0182] Kssb indicated by the SSB sent by the cell is a first preset value;

[0183] The pdcch-ConfigSIB1 indicated by the SSB sent by the cell is a second preset value;

[0184] No residency is allowed in the community;

[0185] The cell does not allow cell selection;

[0186] The cell does not allow cell reselection;

[0187] The cell allows uplink access;

[0188] The cell does not provide paging;

[0189] Only uplink traffic is allowed in the cell.

[0190] Optionally, in some embodiments, the target signal includes at least one of the following: an uplink wake-up signal; a preamble sequence; a message A; or a message 3.

[0191] Optionally, in some embodiments, the target signal is used to indicate at least one of the following:

[0192] Temporary Mobile Subscriber Identity (TMSI);

[0193] Terminal identification;

[0194] Third indication information, the third indication information is used to indicate whether the terminal has subsequent business to send;

[0195] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0196] Optionally, in some embodiments, the conditions, reasons or events for sending the target signal include:

[0197] Triggered by a target criterion or event in the first criteria, the target criterion or event being one of the criterion or event in the first criteria.

[0198] Optionally, in some embodiments, the manner of indicating the condition, cause, or event that triggers sending the target signal includes at least one of the following:

[0199] Indicates the target condition number, cause number or event number that triggers the sending of the target signal. The target condition number, cause number or event number is agreed in advance by the protocol or configured on the network side;

[0200] Indicates the threshold value that triggers the sending of the target signal;

[0201] Indicates that the reason for triggering the sending of the target signal is that the UE has business to send;

[0202] Indicates that the reason for triggering the sending of the target signal is not that the UE has business to send;

[0203] Indicates that the reason for triggering the sending of the target signal is that the second cell cannot be camped on;

[0204] Indicates whether the second cell meets or does not meet the residency condition before the target signal is sent.

[0205] Optionally, in some embodiments, after the terminal receives the SIB from the network side device of the first cell, the method further includes:

[0206] The terminal sends a target uplink transmission to a network side device of the first cell, and the target uplink transmission includes at least one of the following: message 1; message 3; message A; an uplink transmission scheduled by a first uplink authorization, and the first uplink authorization is included in a random access response; an uplink transmission scheduled by a second uplink authorization, and the second uplink authorization is included in a physical downlink shared channel (PDSCH) scheduled by a physical downlink control channel (PDCCH) scrambled by a preset radio network temporary identifier (RNTI).

[0207] In the embodiment of the present application, the network side device of the first cell may determine the number of terminals residing in the first cell according to the target uplink transmission.

[0208] Optionally, the target uplink transmission including the message 1 may be understood or replaced with the target uplink transmission including a specific preamble (preamble), that is, the preamble corresponding to the message 1.

[0209] Optionally, in some embodiments, the preset RNTI may be a PDCCH specifically used for scrambling and scheduling a target PDSCH, where the target PDSCH is a PDSCH including a target uplink transmission uplink grant (UL grant).

[0210] Optionally, in some embodiments, the sending time of the target uplink transmission is determined based on at least one of the following:

[0211] a time domain position of the uplink transmission scheduled by the first uplink grant;

[0212] The moment when the first timer times out;

[0213] The Xth time unit after the time unit in which the target signal is sent, where X is a positive integer;

[0214] The Yth time unit after the time unit in which the feedback of the target signal is received, where Y is a positive integer;

[0215] The first timer is started or restarted when the target signal is sent, and during the running of the first timer, the terminal receives the SIB.

[0216] In the embodiment of the present application, the values ​​of X and Y may be determined by protocol agreement or configured by network-side devices.

[0217] Optionally, in some embodiments, the target uplink transmission may be sent at a time domain position of the uplink transmission scheduled by the first uplink grant.

[0218] In some embodiments, after sending the target signal, a first timer may be started. During the operation of the first timer, the terminal receives the SIB of the first cell and then receives the paging of the first cell, and sends the target uplink transmission after the first timer expires.

[0219] Optionally, in some embodiments, the terminal sending the target uplink transmission to the network side device of the first cell includes:

[0220] When the second condition is met, the terminal sends a target uplink transmission to the network side device of the first cell;

[0221] The second condition includes at least one of the following:

[0222] The terminal has camped in the first cell;

[0223] The terminal receives SIB1 of the first cell;

[0224] The terminal receives the paging;

[0225] The target uplink transmission is the uplink transmission scheduled by the first uplink grant;

[0226] The target uplink transmission is the uplink transmission scheduled by the second uplink grant;

[0227] The first random access preamble identifier received by the terminal is the same as the random access preamble identifier corresponding to the target signal, and the first random access preamble identifier is included in the random access response;

[0228] The second random access preamble identifier received by the terminal is the same as the random access preamble identifier corresponding to the target signal, and the second random access preamble identifier is included in the PDSCH scheduled by the PDCCH scrambled by the preset RNTI.

[0229] Optionally, in some embodiments, the target uplink transmission includes at least one of the following:

[0230] TMSI;

[0231] Terminal identification;

[0232] Whether the second cell allows the terminal to camp;

[0233] Whether the terminal has business to send;

[0234] Whether the terminal has a service that is higher than or equal to the preset priority level to send;

[0235] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0236] In an embodiment of the present application, the target uplink transmission includes the above content, which can be understood as the content carried in the target uplink transmission including TMSI, terminal identification, an indication of whether the second cell allows the terminal to reside, an indication of whether the terminal has any service to send, an indication of whether the terminal has any service to send that is higher than or equal to a preset priority, and one of the fourth indications.

[0237] In order to better understand the present application, some examples are given below for detailed description.

[0238] Embodiment 1: Initial search for the NES cell where the UE resides.

[0239] For the initial search UE, it can receive both the synchronization signal block (Synchronization Signal and PBCH block, SSB) and system information block (System Information Block, SIB) 1 (which contains the WUS configuration for waking up the NES cell) of the coverage cell, and the SSB of the NES cell.

[0240] The UE can measure the reference signals of each cell and find that the measurement results of the coverage cell do not meet the S criterion, and the NES cell supports on-demand SIB1;

[0241] The UE sends a WUS to the NES cell and receives the SIB1 from the NES cell.

[0242] If the reference signal measurement result of the NES cell is found to meet the S criterion, the NES cell is retained.

[0243] In some embodiments, for an initially searched UE, if there are only two candidate cells, normal cell A and NES cell, the UE has the following basic cell selection process: first, the WUS configuration of the NES cell is obtained from cell A that normally sends SIB1, and the UE measures each cell. If cell A is a suitable cell, the UE selects cell A to reside on. If cell A is not a suitable cell, and certain conditions in the first criterion are met, the UE sends a UL WUS signal to the NES cell to trigger the NES cell to send SIB1. The UE receives the SIB1 of the NES cell and determines whether the NES cell is a suitable cell based on the SIB1 of the NES cell. If the NES cell is a suitable cell, the UE resides on the NES cell.

[0244] Embodiment 2: The UE that has camped on the NES reselects to the NES cell.

[0245] For a UE that is reselecting a cell, that is, a UE that has already resided in a coverage cell (a second cell), it has received the SIB of the second cell (which contains the WUS configuration for waking up the NES cell) and can also receive the SSB sent by the NES cell. The UE determines whether to start measurement based on the same-frequency and different-frequency measurement thresholds. Assuming that the measurement of same-frequency and equal-priority different-frequency cells is started, the R value of each cell needs to be calculated, and the calculated R value of the NES cell is the highest.

[0246] If the UE has determined that the NES cell is a suitable cell before sending the WUS (for example, the PLMN is carried by the second cell): the UE directly sends the WUS to the NES cell, receives the SIB1 of the NES cell, and then reselects the NES cell.

[0247] If the UE cannot determine that the NES cell is a suitable cell before sending the WUS: the UE determines whether it needs to send a WUS to the NES cell based on the SSB measurement result of the NES cell and the information provided by the coverage cell (the measurement configuration of the NES cell, including the NES-specific threshold value, offset value, etc.) combined with the first criterion. If the first criterion is met, the UE sends a WUS to the NES cell, triggering the sending of the SIB1 of the NES cell. The UE receives the SIB1 of the NES cell. If it is determined that the NES cell is a suitable cell, it reselects to the NES cell.

[0248] Example 3: Impact of NES cells sending different types of SSBs on legacy UEs and R19 UEs.

[0249] In the energy-saving state, the NES cell does not send SIB1 but sends SSB.

[0250] If the NES cell sends a Cell Discovery Synchronization Signal Block (CD-SSB):

[0251] For legacy UEs using older standards, blindly detecting a non-existent SIB1 wastes power. Legacy UEs will blindly detect SIB1 on Control Resource Set #0 (CORESET0) associated with the CD-SSB. However, the NES cell is in an energy-saving state and does not transmit SIB1. If the legacy UE cannot detect SIB1 at CORESET0, it will assume the cell is barred and will not reselect the NES cell.

[0252] A terminal using the 19th version of the mobile communication standard (Release 19 UE, R19 UE) can learn through the second cell that the NES cell is currently in energy-saving mode (supporting on-demand SIB1). Since SIB1 is not sent in energy-saving mode, there is no need to detect SIB1 in CORESET0 associated with the CD-SSB. The UE determines whether to send a WUS to the NES cell based on the SSB measurement results of the NES cell and corresponding criteria. After sending the WUS, it obtains the SIB1 of the NES cell and, if the residency conditions are met, resides in the NES cell.

[0253] If the NES cell sends NCD-SSB:

[0254] There is no impact on legacy UEs because NCD-SSB is not associated with SIB1. UEs will not receive SIB1 and will not reside in NES cells.

[0255] For R19 UEs, although NCD-SSB is not associated with SIB1, the SIB message of the coverage cell (second cell) notifies the UE that the NES cell allows SIB1 to be triggered by WUS, and the CORESET 0 configuration of the NES cell is also configured for the UE. The UE then determines whether to send WUS to the NES cell based on the SSB measurement results of the NES cell and the corresponding criteria. After sending the WUS, it receives the SIB1 of the NES cell. If the residency conditions are met, it resides in the NES cell. The behavior here is different from that of legacy UEs. Legacy UEs directly ignore the NES cell that sends NCD-SSB and will not reside in the NES cell. The current R19 UE will determine whether to send WUS to the NES cell based on the NES cell information obtained from the coverage cell and the NES cell measurement results. After sending the WUS and receiving the SIB1 of the NES cell, it will determine whether the NES cell is allowed to reside.

[0256] In the fourth embodiment, the UE determines whether to reselect according to the R criterion and the PLMN.

[0257] Method 1: First determine whether it is a suitable cell, then send a WUS and then camp on it: The UE meets the conditions for triggering intra-frequency and inter-frequency measurements. The UE first calculates the R value of each cell and finds that the NES cell has the highest R value. The coverage cell has previously configured the NES cell's PLMN to the UE (or the NES cell and coverage cell have the same priority by default). The UE finds that the PLMN to which the NES cell belongs is consistent with the UE's subscription data. Then, the UE knows that the NES cell is a suitable cell. Before reselecting the NES cell, the UE sends a WUS to the NES cell, obtains the NES cell's SIB1, and camps on the NES cell.

[0258] Optionally, the PLMN in mode 1 is carried by the first cell or is a default, and does not need to be triggered by the UE.

[0259] Method 2: Send a WUS first, confirm whether it is a suitable cell based on SIB1, and then camp on it: The UE meets the conditions for triggering intra-frequency and inter-frequency measurements. The UE first calculates the R value of each cell and finds that the NES cell has the highest R value. However, it needs to send a WUS to obtain the SIB1 of the NES cell to confirm whether the NES cell is a suitable cell. After sending the WUS and obtaining the SIB1 of the NES cell, the UE finds that the PLMN matches and then reselects to the cell.

[0260] Mode 2: The PLMN of Mode 2 is triggered by WUS.

[0261] Embodiment 5: Reselection of cells with different priorities.

[0262] For high-priority cell reselection, NES cell can be configured with NES-specific offset value (specific offset) and NES-specific time interval;

[0263] Higher priority NR frequency or inter-RAT frequency than the serving frequency High priority cell reselection:

[0264] If the system information broadcasts threshServingLowQ and more than 1 second has passed since the terminal camped on the current serving cell, the terminal should reselect to a cell on an NR frequency or inter-RAT frequency with a higher priority than the current serving frequency if the following condition 1 is met.

[0265] Condition 1 includes: in a time interval Treselection RAT Within the range, a higher priority NR or EUTRAN RAT / frequency cell satisfies Squal>ThreshX,HighP,NES (quality threshold dedicated to high priority cell reselection for NES).

[0266] Otherwise, if the following condition 2 is met, the terminal should reselect to a cell on an NR frequency or inter-RAT frequency with a higher priority than the current serving frequency.

[0267] Condition 2 includes at least one of the following: RATWithin, a cell of a higher-priority RAT / frequency satisfies Srxlev > ThreshX,HighP,NES (power threshold for reselection to a high-priority cell dedicated to NES); since the UE has been camped on the current serving cell for more than 1 second.

[0268] Optionally, the above time interval Treselection RAT can be a time interval dedicated to NES:

[0269] For example, Treselection RAT,NES .

[0270] For reselection to a low-priority cell, for a NES cell, a NES specific offset and a NES specific time interval can be configured;

[0271] Reselection to a low-priority cell with a NR frequency or inter-RAT frequency lower than the serving frequency (lower priority NR frequency or inter-RAT frequency than the serving frequency):

[0272] If the system information broadcasts threshServingLowQ, and since the UE has been camped on the current serving cell for more than 1 second, if the following condition 3 is satisfied, the UE shall reselect to a cell on a NR frequency or inter-RAT frequency with a lower priority than the current serving frequency.

[0273] Condition 3 includes:

[0274] Within a time interval Treselection RAT the serving cell satisfies Squal < ThreshServing,LowQ,NES (quality threshold for reselection to a low-priority cell dedicated to NES), and the lower-priority NR or E-UTRAN RAT / frequency satisfies Squal > ThreshX,LowQ,NES (quality threshold for reselection to a low-priority cell dedicated to NES).

[0275] Otherwise, if the following condition 4 is satisfied, the UE shall reselect to a cell on a NR frequency or inter-RAT frequency with a lower priority than the current serving frequency.

[0276] Condition 4 includes at least one of the following:

[0277] Within a time interval Treselection RATInside, the serving cell satisfies Srxlev < ThreshServing,LowP,NES (quality threshold dedicated to NES for reselection to lower-priority cells), and a cell in a lower-priority RAT / frequency satisfies Srxlev > ThreshX,LowP,NES (quality threshold dedicated to NES for reselection to lower-priority cells);

[0278] Since the UE has been camped on the current serving cell for more than 1 second.

[0279] Optionally, the above time interval Treselection RAT can be a time interval dedicated to NES:

[0280] For example, Treselection RAT,NES .

[0281] Example 6: Introduction of cell priority.

[0282] For reselection of co-frequency cells (R criterion), cell priority is further introduced. For example, the priority of non-NES cells is higher and the priority of NES cells is lower.

[0283] The UE can learn whether a cell is a NES cell or a non-NES cell through the SIB of the second cell or the SSB of the first cell. When the R values of multiple cells are the same, the non-NES cell with a higher cell priority is selected according to the cell priority.

[0284] Example 7: Criteria for reselection of co-frequency and equal-priority inter-frequency cells.

[0285] The UE can judge according to the following criteria:

[0286] If the R value of the NES cell is the highest among all co-frequency and equal-priority inter-frequency cells but there is no service, and the serving cell can camp (satisfies the S criterion), then cell reselection is not performed;

[0287] If the R value of the NES cell is the highest among all co-frequency and equal-priority inter-frequency cells but there is no service, and the serving cell cannot camp (does not satisfy the S criterion), cell reselection is performed;

[0288] If the R value of the NES cell is the highest among all co-frequency and equal-priority inter-frequency cells and there is traffic to send, cell reselection is performed;

[0289] If the R value of the NES cell is the highest among all same-frequency and same-priority inter-frequency cells, and there is a low-priority service to be sent, and the serving cell can reside (the S criterion is met), cell reselection is not performed;

[0290] If the R value of the NES cell is the highest among all same-frequency and same-priority inter-frequency cells and there is a high-priority service to be sent, cell reselection is performed.

[0291] Optionally, the network side device triggers: the network side device notifies the UE of a high priority service through a paging message. If the R value of the NES cell is the highest among all same-frequency and same-priority inter-frequency cells, the UE performs cell reselection.

[0292] Example 8: Operations after residency. As shown in Figure 3, it includes the following process:

[0293] The UE sends a WUS to the first cell (the configuration of sending the WUS is obtained through the second cell), starts a first timer at the first symbol of the earliest CORESET, and receives the SIB1 of the first cell within the running time of the first timer;

[0294] receiving paging according to SIB1 of the first cell and residing in the first cell;

[0295] Detecting a downlink control signal (DCI) scrambled by a random access radio network temporary identifier (RA-RNTI), which may be a random access response (RAR);

[0296] Decode received RAR.

[0297] Subsequently, the UE sends a target uplink transmission to the first cell at the corresponding time-frequency position according to the UL grant in the RAR. The target uplink transmission carries information such as the UE ID. The target cell receives the target uplink transmission and learns that the UE resides in the target cell. Subsequently, it only needs to send paging to these UEs that send target uplink transmissions, reducing paging overhead.

[0298] Example 9: For scenario A shown in FIG4 , signal transmission includes the following process:

[0299] 1. The UE is currently residing in a coverage cell and can detect the SSB sent by the NES cell;

[0300] 2. When the signal strength of the coverage cell is lower than the first threshold and the signal strength of the reference signal measurement result of the NES cell is greater than the second target threshold, the UE sends an uplink UE WUS signal to the NES cell;

[0301] 3. The NES cell receives the UE WUS signal, wakes up, and starts sending SIB1;

[0302] 4. The UE starts receiving the SIB1 of the NES cell. The UE receives paging according to the SIB1 configuration contained in the NES cell and resides in the NES cell.

[0303] 5. The UE initiates a single or double target uplink transmission (Message 1 (Msg1)).

[0304] 6. The network receives the target uplink transmission and learns that the UE resides in an NES cell. Subsequent paging only requires sending paging messages to the UE starting from the NES cell. Furthermore, the paging message only needs to be sent to the UE that sent the target uplink transmission. This avoids having to send paging messages to all base stations in the entire TA area, reducing paging overhead.

[0305] Example 10: For scenario B as shown in FIG5 , signal transmission includes the following process:

[0306] 1. The UE is currently residing in coverage cell A and can detect the SSB sent by the NES cell (coverage cell B);

[0307] 2. When the signal strength of coverage cell A is lower than the first threshold, and the difference between the signal strength of the reference signal measurement result of the NES cell and the signal strength of coverage cell A is greater than the third target threshold, the UE sends an uplink UE WUS signal to the NES cell.

[0308] 3. The NES cell receives the UE WUS signal, wakes up, and starts sending SIB1;

[0309] 4. The UE starts receiving the SIB1 of the NES cell. The UE receives paging according to the SIB1 configuration contained in the NES cell and resides in the NES cell.

[0310] 5. The UE initiates a single or double target uplink transmission (Msg1);

[0311] 6. The network receives the target uplink transmission and learns that the UE resides in an NES cell. Subsequent paging only needs to start from the NES cell and send paging messages to the UE. This avoids having to send paging messages to all base stations in the entire TA area and only needs to send paging messages to the UE that sent the target uplink transmission, reducing paging overhead.

[0312] Example 11: For scenario B as shown in FIG6 , signal transmission includes the following process:

[0313] 1. There are multiple indoor small cells in the on-demand SIB1 state (i.e., in energy-saving mode) under the coverage cell. When a UE moves from outdoors to indoors, the uplink service rate may decrease due to the obstruction of the building, which degrades the user experience. However, the UE can receive the WUS configuration information to wake up the NES cell through the coverage cell.

[0314] 2. After the UE enters an indoor location, the signal strength of the coverage cell it originally resides on falls below the first threshold, and the UE can receive the SSB of small cell B. The UE identifies small cell B as supporting on-demand SIB1 and begins sending WUS to the NES cell.

[0315] 3. The NES cell receives the UE WUS signal, wakes up, and starts sending SIB1;

[0316] 4. The UE starts to receive the SIB1 of the NES cell. The UE receives paging according to the SIB1 configuration contained in the NES cell and resides in the NES cell.

[0317] Embodiment 12: The conditions for the UE to send WUS to trigger the NES cell to send SIB1 include various conditions corresponding to the first criterion. When configuring NES cell-related configurations, the network-side device can configure appropriate absolute values ​​or offset values ​​according to the purpose to solve problems such as high RACH collision probability.

[0318] Optionally, if the NES cell is an inter-frequency cell with a frequency priority different from that of the currently camped cell:

[0319] During the initial configuration, the network-side device can configure a higher or lower frequency priority for the NES cell. The UE can obtain the frequency priority information of the NES cell through the cell it originally resides in, the serving cell, or the second cell. When the signal strength of the second cell is lower than the NES-specific first threshold and the frequency priority of the NES cell is very high, the UE can send a WUS to the NES cell, triggering the NES cell to send SIB1, and then receive the NES cell's SIB1, receive paging according to the NES cell's SIB1, and reside in the NES cell.

[0320] Optionally, if the NES cell is a cell with the same frequency or an inter-frequency cell with the same priority as the currently camped cell:

[0321] The conditions for sending WUS can be determined based on the R criterion. When a cell is reselected, the cell ranking criterion is defined as follows, where Rs is used for the serving cell and Rn is used for the neighboring cell. The formula expression and meaning in the protocol are as follows:

[0322] Rs=Qmeas,s+Qhyst–Qoffsettemp;

[0323] Rn=Qmeas,n-Qoffset–Qoffsettemp;

[0324] Qmeas: RSRP measurement value;

[0325] Qoffset: The offset between the target candidate cell and the current resident cell. It is used to adjust the difficulty of reselection and reduce the ping-pong effect. When other parameters remain constant, increasing the offset makes it more difficult to reselect cells with the same or different frequencies and the same priority level, and vice versa.

[0326] Qhyst: The hysteresis value of the serving cell measurement quantity is configured by the network side equipment.

[0327] As can be seen from the protocol, in addition to the offset value (Qoffsettemp) and hysteresis value (Qhyst) configured by the network-side equipment, cell reselection is mainly related to the relative value (Qoffset) between the signal strength of the target candidate cell and the current cell. Qoffset is configured by the network-side equipment and is used to adjust the reselection difficulty and reduce the ping-pong effect. To take NES cells into account and consider the conditions that trigger NES cells to send SIB1, the R criterion formula can be modified to include NES-specific offset values, as shown below:

[0328] Rnes=Qmeas,n-Qoffset–Qoffsettemp+OFFSET (if the cell is NES cell);

[0329] This OFFSET can be either positive or negative. That is, as long as the cell is an NES cell, the OFFSET (configured by the network device) must be added when calculating Rn using the R criterion. When the Rn of the NES cell is the largest among neighboring cells, or ranks among the top X, the UE can send a WUS to trigger the NES cell to send SIB1.

[0330] The above method modifies the original R value calculation method in the protocol. In addition to modifying the above formula, multiple Qoffset values ​​can be configured (where Qoffset is an item in the existing formula). For example, the Qoffset value of the NES cell corresponds to A, and the Qoffset value of the non-NES cell corresponds to B. Then, Rn is calculated. When the Rn of the NES cell is the largest among the neighboring cells, or ranks among the top X (X ≥ 1), the UE can send a WUS to trigger the NES cell to send SIB1.

[0331] Example 13: The following reasons and corresponding numbers are provided by the protocol or the network side device configuration to trigger the sending of WUS:

[0332] Number 1: The terminal measures that the signal strength or signal quality of the second cell is lower than a first threshold (including the first preset threshold and the second preset threshold); and the terminal measures that the signal strength or signal quality of the first cell is higher than a second threshold (including the third preset threshold and the fourth preset threshold).

[0333] Number 2: The signal strength or signal quality of the second cell measured by the terminal is lower than a first threshold; and the relative value or difference between the signal strength or signal quality of the first cell and the signal strength or signal quality of the second cell measured by the terminal is greater than a third threshold;

[0334] Number 3: The terminal measures that the signal strength or signal quality of the second cell is higher than the first threshold; and the UE has a service to send;

[0335] Number 4: The terminal measures that the signal strength or signal quality of the second cell is higher than the first threshold; and the terminal measures that the frequency priority of the first cell is higher than that of the second cell;

[0336] When the UE sends a target signal to the network-side device, the target signal may carry a number identifier to indicate the reason why the network-side device triggers the sending of the WUS.

[0337] Embodiment 14: Before sending the first signal, the UE receives measurement configuration information of multiple cells.

[0338] For example, the measurement configuration of the first cell may include at least one of the following:

[0339] The cell ID of the associated first cell; the frequency of the first cell; whether the first cell supports on-demand SIB1; the frequency priority of the first cell; whether the first cell allows WUS to trigger the sending of SIB1; whether the first cell allows UE to reside; whether the first cell sends paging; whether the indication is the same as the measurement configuration of the second cell; the first signal configuration of the first cell; the high priority cell reselection threshold; the low priority cell reselection threshold; the same frequency or same priority cell reselection threshold; the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold and the sixth preset threshold.

[0340] Example 15: A scenario in which an idle UE resides in a normal cell A and moves toward an NES cell B.

[0341] For example, an idle UE first resides in normal cell A and obtains its SIB1, which contains the WUS configuration used to trigger the NES cell's SIB1 transmission. As the UE moves toward NES cell B, it performs neighbor measurements. If certain conditions are met (such as the first criterion), the UE sends a UL WUS toward NES cell B, triggering NES cell B to transmit its SIB1. The UE then receives NES cell B's SIB1 and determines whether it can reselect to cell B. If the reselection conditions are met, the UE resides in NES cell B.

[0342] Example 16: A scenario where an idle UE resides in NES cell B.

[0343] For example, an idle UE has been staying in NES cell B. However, after a period of time, the UE finds that the previously retained SIB1 of NES cell B has expired and is invalid. At this time, the UE needs to send an UL WUS again to trigger cell B to send SIB1, and then the UE receives the SIB1 of cell B.

[0344] Example 17: An idle UE camps on NES cell B and moves to NES cell C.

[0345] For example, an idle UE has been camped on NES cell B. Before camping, it has obtained the SIB1 of NES cell B. The SIB1 of NES cell B includes the WUS configuration that triggers the SIB1 of NES cell C. When the UE moves toward cell C and performs some neighboring cell measurements, if certain conditions (such as the first criterion) are met, the UE sends a UL WUS to NES cell C, triggering the sending of SIB1 of NES cell C. The UE receives the SIB1 of NES cell C and determines whether cell C meets the conditions for cell reselection. If the conditions for cell reselection are met, the UE performs cell reselection and camps on NES cell C.

[0346] Example 18: An idle UE resides in NES cell B and moves towards normal cell A.

[0347] For example, an idle UE has been camping on NES cell B. When the UE moves toward cell A, if the cell reselection conditions are met, the UE performs cell reselection and camps on normal cell A.

[0348] 7 , an embodiment of the present application further provides a signal transmission method. As shown in FIG7 , the signal transmission method includes:

[0349] Step 701: A network-side device of a first cell receives a target signal sent by a terminal device, where the target signal is used to trigger the network-side device to send at least one of a system information block (SIB) and a paging signal.

[0350] Step 702: The network side device of the first cell sends at least one of SIB and paging.

[0351] Optionally, the target signal includes at least one of the following: an uplink wake-up signal; a preamble sequence; a message A; or a message 3.

[0352] Optionally, the target signal is used to indicate at least one of the following:

[0353] Temporary Mobile Subscriber Identity TMSI;

[0354] Terminal identification;

[0355] Third indication information, the third indication information is used to indicate whether the terminal has subsequent business to send;

[0356] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0357] Optionally, after the network side device of the first cell sends the SIB, the method further includes:

[0358] The network side device of the first cell receives a target uplink transmission from the terminal, and the target uplink transmission includes at least one of the following: message 1; message 3; message A; an uplink transmission scheduled by a first uplink authorization, and the first uplink authorization is included in a random access response; an uplink transmission scheduled by a second uplink authorization, and the second uplink authorization is included in a physical downlink shared channel PDSCH scheduled by a physical downlink control channel PDCCH scrambled by a preset radio network temporary identifier RNTI.

[0359] Optionally, the target uplink transmission includes at least one of the following:

[0360] TMSI;

[0361] Terminal identification;

[0362] Whether the second cell allows the terminal to camp;

[0363] Whether the terminal has business to send;

[0364] Whether the terminal has a service that is higher than or equal to the preset priority;

[0365] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0366] The signal transmission method provided in the embodiment of the present application can be executed by a signal transmission device. In the embodiment of the present application, the signal transmission device provided in the embodiment of the present application is described by taking the signal transmission method executed by the signal transmission device as an example.

[0367] 8 , an embodiment of the present application further provides a signal transmission device. As shown in FIG8 , the signal transmission device 800 includes:

[0368] A first sending module 801 is configured to send a target signal to a network-side device of a first cell, where the target signal is used to trigger the network-side device of the first cell to send a system information block SIB;

[0369] The first receiving module 802 is configured to receive the SIB from the network side device of the first cell; and receive paging from the network side device of the first cell according to the SIB.

[0370] Optionally, the first sending module is specifically configured to: send a target signal to a network side device of the first cell based on a first criterion;

[0371] The first criterion includes at least one of the following:

[0372] The second cell does not meet the S criterion;

[0373] The first cell satisfies the S criterion;

[0374] The signal strength of the second cell measured by the terminal is lower than or equal to the first preset threshold;

[0375] The signal quality of the second cell measured by the terminal is lower than or equal to a second preset threshold;

[0376] The terminal measures that the signal strength of the first cell is greater than or equal to a third preset threshold;

[0377] The terminal measures that the signal quality of the first cell is higher than or equal to a fourth preset threshold;

[0378] The difference between the signal strength of the first cell and the signal strength of the second cell measured by the terminal is greater than or equal to a fifth preset threshold;

[0379] The terminal measures that a difference between the signal quality of the first cell and the signal quality of the second cell is greater than or equal to a sixth preset threshold;

[0380] The terminal has services that need to be sent;

[0381] The terminal upper layer requests to establish an RRC connection;

[0382] The terminal is paged;

[0383] The frequency priority of the first cell is higher than that of the second cell;

[0384] A difference between the signal quality of the first cell and the target offset value is greater than or equal to a seventh preset threshold;

[0385] The difference between the signal strength of the first cell and the target offset value is greater than or equal to an eighth preset threshold;

[0386] The first cell supports on-demand triggering of SIB 1;

[0387] The first cell does not send SIB 1;

[0388] The first cell is a suitable cell;

[0389] The SSB indication of the first cell is a non-cell definition synchronization signal block NCD-SSB;

[0390] The public land mobile network PLMN list of the first cell includes the PLMN registered by the terminal;

[0391] The cell priority of the first cell is higher than the cell priority of a third cell, the third cell is a neighboring cell having the same R value as the first cell, and the R value is determined based on an R criterion;

[0392] The R value of the first cell is one of the first X R values ​​of a plurality of R values ​​sorted in descending order, and the plurality of R values ​​are R values ​​obtained by the terminal by calculating the plurality of neighboring cells based on the R criterion;

[0393] When the cell is a network energy-saving cell, the R value of the cell is calculated as follows: R value = Qmeas,n-Qoffset-Qoffsettemp+OFFSET, where Qmeas,n represents the signal measurement result of the cell, Qoffset and Qoffsettemp are offset values ​​configured by the network side device, and OFFSET is an offset value dedicated to energy-saving cells.

[0394] Optionally, the second cell is a cell configured for the terminal to receive the target signal.

[0395] Optionally, at least one of the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold, the sixth preset threshold, the seventh preset threshold, and the eighth preset threshold satisfies at least one of the following:

[0396] Determined by the protocol or configured by network-side devices;

[0397] A threshold dedicated to network energy-saving cells;

[0398] A threshold is configured with at least two threshold values, and different threshold values ​​correspond one-to-one to different types of target signals, wherein different types of target signals are used to trigger different functions;

[0399] A threshold is configured with a first type threshold value and a second type threshold value. The first type threshold value is associated with a service sending of a terminal, and the second type threshold value is not associated with a service sending of a terminal.

[0400] Optionally, the signal transmission device further includes:

[0401] a determining module, configured to determine whether the first cell is a suitable cell based on at least one of the following:

[0402] a measurement result of a reference signal of the first cell;

[0403] the PLMN of the first cell;

[0404] SIB1 triggered by the first cell;

[0405] The PLMN of the first cell is obtained from the second cell, or the PLMN of the first cell is the same as the PLMN of the second cell by default.

[0406] Optionally, the first receiving module 802 is further configured to receive measurement configuration information of at least one cell, where the measurement configuration information is used to send the target signal, and the measurement configuration information includes at least one of the following:

[0407] Sharing the neighboring cell measurement configuration of the second cell;

[0408] Cell measurement configuration for each frequency layer;

[0409] Cell measurement configuration for each cell;

[0410] Independent cell measurement configuration.

[0411] Optionally, the cell measurement configuration for each frequency layer includes at least one of the following:

[0412] A list of neighboring cells that meet the first condition on the frequency layer;

[0413] first indication information, where the first indication information is used to indicate whether all cells on the frequency layer meet a first condition;

[0414] Configuration of target signals corresponding to cells on the frequency layer.

[0415] Optionally, the cell measurement configuration for the cell includes at least one of the following:

[0416] second indication information, where the second indication information is used to indicate whether the cell meets the first condition;

[0417] Configuration of the target signal corresponding to the cell.

[0418] Optionally, the first condition includes at least one of the following:

[0419] The system information block needs to send a target signal to obtain;

[0420] The synchronization signal block SSB sent by the cell is indicated as NCD-SSB;

[0421] Kssb indicated by the SSB sent by the cell is a first preset value;

[0422] The pdcch-ConfigSIB1 indicated by the SSB sent by the cell is a second preset value;

[0423] No residency is allowed in the community;

[0424] The cell does not allow cell selection;

[0425] The cell does not allow cell reselection;

[0426] The cell allows uplink access;

[0427] The cell does not provide paging;

[0428] Only uplink resident is allowed in the cell.

[0429] Optionally, the first condition includes at least one of the following:

[0430] The system information block needs to send a target signal to obtain;

[0431] The synchronization signal block SSB sent by the cell is indicated as NCD-SSB;

[0432] Kssb indicated by the SSB sent by the cell is a first preset value;

[0433] The pdcch-ConfigSIB1 indicated by the SSB sent by the cell is a second preset value;

[0434] No residency is allowed in the community;

[0435] The cell does not allow cell selection;

[0436] The cell does not allow cell reselection;

[0437] The cell allows uplink access;

[0438] The cell does not provide paging;

[0439] Only uplink resident is allowed in the cell.

[0440] Optionally, the target signal includes at least one of the following: an uplink wake-up signal; a preamble sequence; a message A; or a message 3.

[0441] Optionally, the target signal is used to indicate at least one of the following:

[0442] Temporary Mobile Subscriber Identity TMSI;

[0443] Terminal identification;

[0444] Third indication information, the third indication information is used to indicate whether the terminal has subsequent business to send;

[0445] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0446] Optionally, the first sending module 801 is also used to send a target uplink transmission to a network side device of the first cell, and the target uplink transmission includes at least one of the following: message 1; message 3; message A; an uplink transmission scheduled by a first uplink authorization, and the first uplink authorization is included in a random access response; an uplink transmission scheduled by a second uplink authorization, and the second uplink authorization is included in a physical downlink shared channel PDSCH scheduled by a physical downlink control channel PDCCH scrambled by a preset radio network temporary identifier RNTI.

[0447] Optionally, the sending time of the target uplink transmission is determined based on at least one of the following:

[0448] a time domain position of the uplink transmission scheduled by the first uplink grant;

[0449] The moment when the first timer times out;

[0450] The Xth time unit after the time unit in which the target signal is sent, where X is a positive integer;

[0451] The Yth time unit after the time unit in which the feedback of the target signal is received, where Y is a positive integer;

[0452] The first timer is started or restarted when the target signal is sent, and during the running of the first timer, the terminal receives the SIB.

[0453] Optionally, the first sending module 801 is specifically configured to send the target uplink transmission to the network side device of the first cell when the second condition is met;

[0454] The second condition includes at least one of the following:

[0455] The terminal has camped in the first cell;

[0456] The terminal receives SIB1 of the first cell;

[0457] The terminal receives the paging;

[0458] The target uplink transmission is the uplink transmission scheduled by the first uplink grant;

[0459] The target uplink transmission is the uplink transmission scheduled by the second uplink grant;

[0460] The first random access preamble identifier received by the terminal is the same as the random access preamble identifier corresponding to the target signal, and the first random access preamble identifier is included in the random access response;

[0461] The second random access preamble identifier received by the terminal is the same as the random access preamble identifier corresponding to the target signal, and the second random access preamble identifier is included in the PDSCH scheduled by the PDCCH scrambled by the preset RNTI.

[0462] Optionally, the target uplink transmission includes at least one of the following:

[0463] TMSI;

[0464] Terminal identification;

[0465] Whether the second cell allows the terminal to camp;

[0466] Whether the terminal has business to send;

[0467] Whether the terminal has a service that is higher than or equal to the preset priority level to send;

[0468] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0469] 9 , an embodiment of the present application further provides a signal transmission device. As shown in FIG9 , the signal transmission device 900 includes:

[0470] A second receiving module 901 is configured for a network-side device of a first cell to receive a target signal sent by a terminal device, where the target signal is used to trigger the network-side device to send at least one of a system information block (SIB) and a paging signal;

[0471] The second sending module 902 is configured to send at least one of the SIB and the paging.

[0472] Optionally, the target signal includes at least one of the following: an uplink wake-up signal; a preamble sequence; a message A; or a message 3.

[0473] Optionally, the target signal is used to indicate at least one of the following:

[0474] Temporary Mobile Subscriber Identity TMSI;

[0475] Terminal identification;

[0476] Third indication information, the third indication information is used to indicate whether the terminal has subsequent business to send;

[0477] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0478] Optionally, the second receiving module 901 is also used to receive a target uplink transmission from the terminal (such as after sending the SIB), and the target uplink transmission includes at least one of the following: message 1; message 3; message A; uplink transmission scheduled by a first uplink authorization, and the first uplink authorization is included in a random access response; uplink transmission scheduled by a second uplink authorization, and the second uplink authorization is included in a physical downlink shared channel PDSCH scheduled by a physical downlink control channel PDCCH scrambled by a preset radio network temporary identifier RNTI.

[0479] Optionally, the target uplink transmission includes at least one of the following:

[0480] TMSI;

[0481] Terminal identification;

[0482] Whether the second cell allows the terminal to camp;

[0483] Whether the terminal has business to send;

[0484] Whether the terminal has a service that is higher than or equal to the preset priority level to send;

[0485] Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

[0486] The signal transmission device 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 chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0487] The signal transmission device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 2 to 7 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0488] As shown in Figure 10, an embodiment of the present application also provides a communication device 1000, including a processor 1001 and a memory 1002, and the memory 1002 stores programs or instructions that can be run on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned signal transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0489] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG2 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment can be applied to this terminal embodiment and achieve the same technical effects. Specifically, FIG11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0490] The terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109 and at least some of the components of the processor 1110.

[0491] Those skilled in the art will appreciate that the terminal 1100 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1110 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG11 does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0492] It should be understood that in an embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes a touch panel 11071 and at least one of other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts: a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0493] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1101 may transmit the data to the processor 1110 for processing. Furthermore, the RF unit 1101 may send uplink data to the network-side device. Typically, the RF unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0494] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1109 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 random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0495] Processor 1110 may include one or more processing units. Optionally, processor 1110 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1110.

[0496] Among them, the radio frequency unit 1101 is used to send a target signal to the network side device of the first cell, and the target signal is used to trigger the network side device of the first cell to send a system information block SIB; receive the SIB from the network side device of the first cell; and receive paging of the network side device of the first cell according to the SIB.

[0497] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the terminal side method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0498] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG7 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0499] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 12, network-side device 1200 includes an antenna 1201, a radio frequency device 1202, a baseband device 1203, a processor 1204, and a memory 1205. Antenna 1201 is connected to radio frequency device 1202. In the uplink direction, radio frequency device 1202 receives information via antenna 1201 and sends the received information to baseband device 1203 for processing. In the downlink direction, baseband device 1203 processes the information to be transmitted and sends it to radio frequency device 1202. Radio frequency device 1202 processes the received information and then sends it through antenna 1201.

[0500] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1203 , which includes a baseband processor.

[0501] The baseband device 1203 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 12, one of which is a baseband processor, for example, which is connected to the memory 1205 through a bus interface to call the program in the memory 1205 and execute the network side device operations shown in the above method embodiment.

[0502] The network side device may further include a network interface 1206 , which is, for example, a Common Public Radio Interface (CPRI).

[0503] Specifically, the network side device 1200 of the embodiment of the present application also includes: instructions or programs stored in the memory 1205 and executable on the processor 1204. The processor 1204 calls the instructions or programs in the memory 1205 to execute the method of execution of each module shown in Figure 9 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0504] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal transmission method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0505] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0506] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0507] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0508] An embodiment of the present application further provides a computer program / program product, which includes computer instructions. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned signal transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0509] An embodiment of the present application also provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the terminal side signal transmission method described above, and the network side device can be used to execute the steps of the network side device signal transmission method described above.

[0510] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the 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 opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0511] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0512] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A signal transmission method, comprising: The terminal sends a target signal to a network side device of the first cell, where the target signal is used to trigger the network side device of the first cell to send a system information block SIB; The terminal receives the SIB from a network side device of the first cell; The terminal receives paging from a network side device of the first cell according to the SIB.

2. The method according to claim 1, wherein The terminal sending the target signal to the network side device of the first cell includes: The terminal sends a target signal to a network side device of the first cell based on a first criterion; The first criterion includes at least one of the following: The second cell does not meet the S criterion; The first cell satisfies the S criterion; The signal strength of the second cell measured by the terminal is lower than or equal to a first preset threshold; The signal quality of the second cell measured by the terminal is lower than or equal to a second preset threshold; The signal strength of the first cell measured by the terminal is higher than or equal to a third preset threshold; The signal quality of the first cell measured by the terminal is higher than or equal to a fourth preset threshold; The difference between the signal strength of the first cell and the signal strength of the second cell measured by the terminal is greater than or equal to a fifth preset threshold; The difference between the signal quality of the first cell and the signal quality of the second cell measured by the terminal is greater than or equal to a sixth preset threshold; The terminal has a service that needs to be sent; The terminal upper layer requests to establish a radio resource control RRC connection; The terminal is paged; The frequency priority of the first cell is higher than that of the second cell; A difference between the signal quality of the first cell and the target offset value is greater than or equal to a seventh preset threshold; The difference between the signal strength of the first cell and the target offset value is greater than or equal to an eighth preset threshold; The first cell supports on-demand triggering of SIB 1; The first cell does not send SIB 1; The first cell is a suitable cell; The SSB indication of the first cell is a non-cell definition synchronization signal block NCD-SSB; The public land mobile network PLMN list of the first cell includes the PLMN registered by the terminal; The cell priority of the first cell is higher than the cell priority of a third cell, the third cell is a neighboring cell having the same R value as the first cell, and the R value is determined based on an R criterion; The R value of the first cell is one of the first X R values of a plurality of R values sorted in descending order, and the plurality of R values are R values obtained by the terminal by calculating the plurality of neighboring cells based on the R criterion; In the case where the cell is a network energy-saving cell, the R value of the cell is calculated as follows: R value = Qmeas,n - Qoffset - Qoffsettemp + OFFSET, where Qmeas,n represents the signal measurement result of the cell, Qoffset and Qoffsettemp are offset values configured by the network-side device, and OFFSET is an offset value dedicated to the network energy-saving cell; The second cell is a cell configured for the terminal to receive the target signal; At least one of the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold, the sixth preset threshold, the seventh preset threshold, and the eighth preset threshold satisfies at least one of the following: Determined by the protocol or configured by network-side devices; A threshold dedicated to network energy-saving cells; A threshold is configured with at least two threshold values, and different threshold values correspond one-to-one to different types of target signals, wherein different types of target signals are used to trigger different functions; A threshold is configured with a first type threshold value and a second type threshold value. The first type threshold value is associated with a service sending of a terminal, and the second type threshold value is not associated with a service sending of a terminal.

3. The method according to claim 1 or 2, further comprising: The terminal determines whether the first cell is a suitable cell based on at least one of the following: a measurement result of a reference signal of the first cell; a public land mobile network PLMN of the first cell; SIB1 triggered by the first cell; The PLMN of the first cell is obtained from the second cell, or the PLMN of the first cell is the same as the PLMN of the second cell by default.

4. The method according to any one of claims 1 to 3, further comprising: The terminal receives measurement configuration information of at least one cell, where the measurement configuration information is used to send the target signal, and the measurement configuration information includes at least one of the following: Sharing the neighboring cell measurement configuration of the second cell; Cell measurement configuration for each frequency layer; Cell measurement configuration for each cell; Independent cell measurement configuration.

5. The method according to claim 4, wherein The cell measurement configuration for each frequency layer includes at least one of the following: A list of neighboring cells that meet the first condition on the frequency layer; first indication information, where the first indication information is used to indicate whether all cells on the frequency layer meet a first condition; Configuration of target signals corresponding to cells on the frequency layer.

6. The method according to claim 4, wherein: The cell measurement configuration for the cell includes at least one of the following: second indication information, where the second indication information is used to indicate whether the cell meets the first condition; Configuration of the target signal corresponding to the cell.

7. The method according to claim 5 or 6, wherein: The first condition includes at least one of the following: The system information block needs to send a target signal to obtain; The synchronization signal block SSB sent by the cell is indicated as NCD-SSB; Kssb indicated by the SSB sent by the cell is a first preset value; The pdcch-ConfigSIB1 indicated by the SSB sent by the cell is a second preset value; No residency is allowed in the community; The cell does not allow cell selection; The cell does not allow cell reselection; The cell allows uplink access; The cell does not provide paging; Only uplink resident is allowed in the cell.

8. The method according to claim 4, wherein The independent cell measurement configuration includes at least one of the following: Frequency associated with the cell measurement configuration; The cell measurement configuration is associated with the cell; The target signal configuration corresponding to the cell associated with the cell measurement configuration; Thresholds related to measurement result decisions; The thresholds related to the measurement result decision include a high-priority cell reselection threshold, a low-priority cell reselection threshold, and a same-frequency or same-priority cell reselection threshold.

9. The method according to any one of claims 1 to 8, wherein: The target signal includes at least one of the following: an uplink wake-up signal; a preamble sequence; a message A; or a message 3.

10. The method according to any one of claims 1 to 9, wherein: The target signal is used to indicate at least one of the following: Temporary Mobile Subscriber Identity TMSI; Terminal identification; Third indication information, the third indication information is used to indicate whether the terminal has subsequent business to send; Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

11. The method according to any one of claims 1 to 10, wherein: After the terminal receives the SIB from the network side device of the first cell, the method further includes: The terminal sends a target uplink transmission to a network side device of the first cell, and the target uplink transmission includes at least one of the following: message 1; message 3; message A; an uplink transmission scheduled by a first uplink authorization, and the first uplink authorization is included in a random access response; an uplink transmission scheduled by a second uplink authorization, and the second uplink authorization is included in a physical downlink shared channel PDSCH scheduled by a physical downlink control channel PDCCH scrambled by a preset radio network temporary identifier RNTI.

12. The method according to claim 11, wherein The sending time of the target uplink transmission is determined based on at least one of the following: a time domain position of the uplink transmission scheduled by the first uplink grant; The moment when the first timer times out; The Xth time unit after the time unit in which the target signal is sent, where X is a positive integer; The Yth time unit after the time unit in which the feedback of the target signal is received, where Y is a positive integer; The first timer is started or restarted when the target signal is sent, and during the running of the first timer, the terminal receives the SIB.

13. The method according to claim 11 or 12, wherein: The terminal sending the target uplink transmission to the network side device of the first cell includes: When the second condition is met, the terminal sends a target uplink transmission to the network side device of the first cell; The second condition includes at least one of the following: The terminal has camped in the first cell; The terminal receives SIB1 of the first cell; The terminal receives the paging; The target uplink transmission is the uplink transmission scheduled by the first uplink grant; The target uplink transmission is the uplink transmission scheduled by the second uplink grant; The first random access preamble identifier received by the terminal is the same as the random access preamble identifier corresponding to the target signal, and the first random access preamble identifier is included in the random access response; The second random access preamble identifier received by the terminal is the same as the random access preamble identifier corresponding to the target signal, and the second random access preamble identifier is included in the PDSCH scheduled by the PDCCH scrambled by the preset RNTI.

14. The method according to any one of claims 11 to 13, wherein: The target uplink transmission includes at least one of the following: TMSI; Terminal identification; Whether the second cell allows the terminal to camp; Whether the terminal has business to send; Whether the terminal has a service that is higher than or equal to the preset priority level to send; Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

15. A signal transmission method, comprising: A network side device of the first cell receives a target signal sent by a terminal device, where the target signal is used to trigger the network side device to send at least one of a system information block SIB and a paging signal; The network side device of the first cell sends at least one of SIB and paging.

16. The method according to claim 15, wherein The target signal includes at least one of the following: an uplink wake-up signal; a preamble sequence; a message A; or a message 3.

17. The method according to claim 15 or 16, wherein The target signal is used to indicate at least one of the following: Temporary Mobile Subscriber Identity TMSI; Terminal identification; Third indication information, the third indication information is used to indicate whether the terminal has subsequent business to send; Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

18. The method according to any one of claims 15 to 17, wherein: After the network side device of the first cell sends the SIB, the method further includes: The network side device of the first cell receives a target uplink transmission from the terminal, and the target uplink transmission includes at least one of the following: message 1; message 3; message A; an uplink transmission scheduled by a first uplink authorization, and the first uplink authorization is included in a random access response; an uplink transmission scheduled by a second uplink authorization, and the second uplink authorization is included in a physical downlink shared channel PDSCH scheduled by a physical downlink control channel PDCCH scrambled by a preset radio network temporary identifier RNTI.

19. The method according to claim 18, wherein The target uplink transmission includes at least one of the following: TMSI; Terminal identification; Whether the second cell allows the terminal to camp; Whether the terminal has business to send; Whether the terminal has a service that is higher than or equal to the preset priority level to send; Fourth indication information, where the fourth indication information is used to indicate a condition, reason, or event for sending the target signal.

20. A signal transmission device, comprising: A first sending module, configured to send a target signal to a network-side device of a first cell, where the target signal is used to trigger the network-side device of the first cell to send a system information block SIB; The first receiving module is configured to receive the SIB from the network side device of the first cell; and receive paging from the network side device of the first cell according to the SIB.

21. The device according to claim 20, wherein The first sending module is specifically configured to: send a target signal to a network side device of the first cell based on a first criterion; The first criterion includes at least one of the following: The second cell does not meet the S criterion; The first cell satisfies the S criterion; The signal strength of the second cell measured by the terminal is lower than or equal to the first preset threshold; The signal quality of the second cell measured by the terminal is lower than or equal to a second preset threshold; The terminal measures that the signal strength of the first cell is greater than or equal to a third preset threshold; The terminal measures that the signal quality of the first cell is higher than or equal to a fourth preset threshold; The difference between the signal strength of the first cell and the signal strength of the second cell measured by the terminal is greater than or equal to a fifth preset threshold; The terminal measures that a difference between the signal quality of the first cell and the signal quality of the second cell is greater than or equal to a sixth preset threshold; The terminal has services that need to be sent; The terminal upper layer requests to establish an RRC connection; The terminal is paged; The frequency priority of the first cell is higher than that of the second cell; A difference between the signal quality of the first cell and the target offset value is greater than or equal to a seventh preset threshold; The difference between the signal strength of the first cell and the target offset value is greater than or equal to an eighth preset threshold; The first cell supports on-demand triggering of SIB 1; The first cell does not send SIB 1; The first cell is a suitable cell; The SSB indication of the first cell is a non-cell definition synchronization signal block NCD-SSB; The public land mobile network PLMN list of the first cell includes the PLMN registered by the terminal; The cell priority of the first cell is higher than the cell priority of a third cell, the third cell is a neighboring cell having the same R value as the first cell, and the R value is determined based on an R criterion; The R value of the first cell is one of the first X R values of a plurality of R values sorted in descending order, and the plurality of R values are R values obtained by the terminal by calculating the plurality of neighboring cells based on the R criterion; In the case where the cell is a network energy-saving cell, the R value of the cell is calculated as follows: R value = Qmeas,n - Qoffset - Qoffsettemp + OFFSET, where Qmeas,n represents the signal measurement result of the cell, Qoffset and Qoffsettemp are offset values configured by the network-side device, and OFFSET is an offset value dedicated to the energy-saving cell; The second cell is a cell configured for the terminal to receive the target signal; At least one of the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold, the sixth preset threshold, the seventh preset threshold, and the eighth preset threshold satisfies at least one of the following: Determined by the protocol or configured by network-side devices; A threshold dedicated to network energy-saving cells; A threshold is configured with at least two threshold values, and different threshold values correspond one-to-one to different types of target signals, wherein different types of target signals are used to trigger different functions; A threshold is configured with a first type threshold value and a second type threshold value. The first type threshold value is associated with a service sending of a terminal, and the second type threshold value is not associated with a service sending of a terminal.

22. The apparatus according to claim 20 or 21, further comprising: a determining module, configured to determine whether the first cell is a suitable cell based on at least one of the following: a measurement result of a reference signal of the first cell; the PLMN of the first cell; SIB1 triggered by the first cell; The PLMN of the first cell is obtained from the second cell, or the PLMN of the first cell is the same as the PLMN of the second cell by default.

23. A signal transmission device, comprising: A second receiving module, configured for a network-side device of the first cell to receive a target signal sent by a terminal device, wherein the target signal is used to trigger the network-side device to send at least one of a system information block SIB and a paging signal; The second sending module is configured to send at least one of the SIB and the paging.

24. The device according to claim 23, wherein The second receiving module is also used to receive a target uplink transmission from the terminal after sending the SIB, and the target uplink transmission includes at least one of the following: message 1; message 3; message A; an uplink transmission scheduled by a first uplink authorization, and the first uplink authorization is included in a random access response; an uplink transmission scheduled by a second uplink authorization, and the second uplink authorization is included in a physical downlink shared channel PDSCH scheduled by a physical downlink control channel PDCCH scrambled by a preset radio network temporary identifier RNTI.

25. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal transmission method according to any one of claims 1 to 14 are implemented.

26. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal transmission method according to any one of claims 15 to 22 are implemented.

27. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the signal transmission method according to any one of claims 1 to 22.

28. A computer program product comprising computer instructions, which, when executed by a processor, implement the steps of the signal transmission method according to any one of claims 1 to 22.

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