Communication method, communication device, storage medium and computer program product

Abstract

The invention belongs to the technical field of communication, and discloses a communication method, communication equipment, a storage medium and a computer program product. According to the invention, the cell configuration information of the second cell is sent to the user equipment, and the cell configuration information comprises the configuration information of the on-demand synchronization signal block corresponding to the second cell. Namely, in the embodiment of the invention, the cell configuration information sent by the first cell to the user equipment carries the configuration information of the on-demand synchronization signal block, and the on-demand synchronization signal block is one of the synchronization signal blocks and indicates that the second cell sends the synchronization signal according to the demand. The configuration information of the on-demand synchronization signal block enables the user equipment to execute a related process based on the on-demand synchronization signal block sent by the second cell when there is a demand, thereby assisting the realization of a related energy-saving process of the second cell in a carrier aggregation scene, and expanding the application scene of a related technology of the on-demand synchronization signal block.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, communication equipment, storage medium and computer program product. Background Art

[0002] Network Energy Saving (NES) is playing a positive role in improving environmental sustainability, reducing negative environmental impacts and reducing operating costs. Network energy saving helps reduce the energy consumption burden of communication operators and user equipment (UE), and can effectively reduce pollution events that have a harmful impact on the environment, such as greenhouse gas emissions. At present, due to the widespread use of 5G networks in various industries and regions, users' demand for high data rate (such as XR) services and applications is increasing, and business services and applications have significantly increased their requirements for transmission rate, reliability and security. To meet these needs, communication operators have introduced more antennas, larger bandwidths and more frequency bands, resulting in a denser 5G network structure. Therefore, while improving the performance of 5G networks, operators also need to propose new solutions to improve network energy efficiency and reduce the negative impact of 5G networks on the environment.

[0003] For intra-band carrier aggregation (intra-band CA) scenarios, as long as the UE supports this function, it can perform time and frequency synchronization through PCell (Primary Cell) and SCell (Secondary Cell) without the need for SSB broadcast by SCell. However, in inter-band carrier aggregation (inter-band CA) scenarios, due to the large TA error between the primary and secondary cells, it will be more difficult to use the PCell notification method to assist the UE in synchronizing with the SCell, so the application of the SSB-less SCell solution also faces greater challenges. In order to maintain a balance between the UE's service quality and the base station's energy-saving gain, a state switching solution needs to be designed so that the SCell can dynamically adjust the SSB transmission period.

[0004] The on-demand synchronization signal block (SSB) solution is a solution that can effectively reduce the SCell activation time (to ensure UE service quality) and ensure the energy saving gain of the base station (to ensure the accuracy of switching). In the 5G scenario where the on-demand SSB solution is applied, the SCell in a fully dormant state does not need to send SSB or sends SSB at a lower frequency. It only sends on-demand SSB when there is a need. The UE can perform time-frequency synchronization and delay adjustment with the SCell through on-demand SSB.

[0005] Since the SCell sends on-demand SSB only when there is a demand (the demand may be indicated by the PCell or the UE), if the on-demand SSB is sent a fixed number of times, the UE may miss the on-demand SSB and lose the synchronization opportunity, which will increase the SCell activation time of the UE or even lose the activation opportunity.

[0006] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0007] The main purpose of the present application is to provide a communication method, a communication device, a storage medium and a computer program product, which aim to solve the technical problem that it is difficult to meet the synchronization requirements of on-demand SSB in the scenario due to the lack of on-demand SSB technology in the carrier aggregation scenario.

[0008] To achieve the above object, the present application provides a communication method, which is applied to a first cell;

[0009] Sending cell configuration information of the second cell to the user equipment, where the cell configuration information includes configuration information of an on-demand synchronization signal block of the second cell, where the configuration information of the on-demand synchronization signal block includes at least one of the following:

[0010] The configuration information index of the on-demand synchronization signal block;

[0011] Status configuration information of the on-demand synchronization signal block;

[0012] Time domain resource configuration information of the on-demand synchronization signal block;

[0013] Transmission configuration information of the on-demand synchronization signal block;

[0014] Frequency domain resource configuration information of the on-demand synchronization signal block;

[0015] The measurement configuration information of the on-demand synchronization signal block.

[0016] Optionally, the configuration information index is used to indicate that the user equipment uses configuration information of the on-demand synchronization signal block.

[0017] Optionally, the user equipment stores the configuration information index and the configuration information corresponding to the configuration information index, or stores multiple groups of configuration information indexes and multiple groups of configuration information corresponding to the multiple groups of configuration information indexes.

[0018] Optionally, the configuration information index is carried by a radio resource control information element, and the configuration information index includes a parameter name and a parameter value, and the parameter value is a shaping element.

[0019] Optionally, the upper threshold of the parameter value is constrained by multiplicity and type constraint definitions, and the upper threshold is 16, 32 or 64.

[0020] Optionally, the status configuration information is used to characterize the activation and deactivation status of the on-demand synchronization signal block, wherein if the value of the status configuration information is a first preset value, it characterizes the activation of the on-demand synchronization signal block; if the value of the status configuration information is a second preset value, it characterizes the deactivation of the on-demand synchronization signal block.

[0021] Optionally, the time domain resource configuration information includes at least one of the following:

[0022] a transmission period of the on-demand synchronization signal block;

[0023] The activation beam position configuration of the on-demand synchronization signal block;

[0024] The transmission time offset between the on-demand synchronization signal block and the normal synchronization signal block of the second cell.

[0025] Optionally, the transmission configuration information includes:

[0026] Time domain position information of the start of transmission of the on-demand synchronization signal block;

[0027] The time domain position information of the end transmission of the on-demand synchronization signal block;

[0028] The number of transmissions of the on-demand sync signal block.

[0029] Optionally, the time domain position information at which the on-demand synchronization signal block starts to be transmitted is one of the following:

[0030] The time interval from when the user equipment receives the configuration information to when the second cell starts sending the on-demand synchronization signal block;

[0031] The time interval from when the user equipment prepares to send confirmation information to when the second cell starts to send the on-demand synchronization signal block, the confirmation information being hybrid automatic repeat request confirmation information after the user equipment receives the configuration information;

[0032] The time interval from when the user equipment receives the configuration information to when the second cell starts to send the first transmission time slot position of the on-demand synchronization signal block;

[0033] The second cell sends a reference time slot position of the on-demand synchronization signal block.

[0034] Optionally, the time domain position information at which the on-demand synchronization signal block ends transmission is one of the following:

[0035] The time interval from when the second cell starts sending the on-demand synchronization signal block to when it stops sending the on-demand synchronization signal block;

[0036] The time interval from when the user equipment receives the configuration information to when the second cell stops sending the on-demand synchronization signal block;

[0037] The time interval from when the user equipment prepares to send the confirmation information to when the second cell finishes sending the on-demand synchronization signal block;

[0038] A time interval from the user equipment sending the measurement result to the second cell finishing sending the on-demand synchronization signal block;

[0039] The second cell ends sending the time slot position of the on-demand synchronization signal block.

[0040] Optionally, the frequency domain resource configuration information includes at least one of the following:

[0041] The subcarrier spacing of the on-demand synchronization signal block;

[0042] the absolute frequency position of the on-demand synchronization signal block;

[0043] A list of frequency bands to which the on-demand synchronization signal blocks belong;

[0044] The absolute frequency point A position of the reference resource block;

[0045] A list of special carriers of said subcarrier spacing;

[0046] The reference cell of the on-demand synchronization signal block.

[0047] Optionally, the measurement configuration information includes at least one of a measurement time domain period, a measurement offset, and a measurement duration.

[0048] Optionally, when the measurement configuration information is empty, historical measurement configuration information is used as the measurement configuration information.

[0049] Optionally, the location of the configuration information of the on-demand synchronization signal block in the cell configuration information is one of the following:

[0050] The cell group configuration level in the cell configuration information;

[0051] A secondary cell configuration level in the cell configuration information;

[0052] The cell general configuration level in the cell configuration information;

[0053] The directional downlink bandwidth unit configuration level in the cell configuration information.

[0054] In addition, to achieve the above purpose, the present application also proposes a communication method, which is applied to a first cell, and the communication method includes:

[0055] The cell configuration information of the second cell is sent to the user equipment, where the cell configuration information includes the state configuration of the on-demand synchronization signal block corresponding to the second cell.

[0056] Optionally, the status configuration of the on-demand synchronization signal block is located in the configuration information of the on-demand synchronization signal block, or is located in parallel with the configuration information in the cell configuration information.

[0057] In addition, to achieve the above purpose, the present application also proposes a communication method, which is applied to a user equipment, and the communication method includes:

[0058] receiving cell configuration information of a second cell sent by the first cell;

[0059] Based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, the activation state of the on-demand synchronization signal block of the second cell is determined.

[0060] Optionally, the determining the activation state of the on-demand synchronization signal block of the second cell based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information includes:

[0061] If the cell configuration information contains a status configuration of the on-demand synchronization signal block corresponding to the second cell, it is determined that the on-demand synchronization signal block of the second cell has been activated.

[0062] Optionally, the step of determining the activation state of the on-demand synchronization signal block of the second cell based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information further includes:

[0063] If the cell configuration information contains a status configuration of the on-demand synchronization signal block corresponding to the second cell, and the cell configuration information is a cell release configuration signaling, it is determined that the on-demand synchronization signal block of the second cell is deactivated.

[0064] In addition, to achieve the above purpose, the present application also proposes a communication method, which is applied to a user equipment, and the communication method includes:

[0065] receiving cell configuration information of a second cell sent by the first cell;

[0066] If the status configuration of the second cell exists in the cell configuration information, it is determined that the second cell has been activated and the on-demand synchronization signal block corresponding to the second cell has been activated.

[0067] In addition, to achieve the above-mentioned purpose, the present application also proposes a communication device, which includes: a processor, a memory, and a communication program stored in the memory and executable on the processor, and the communication program implements the steps of the communication method described above when executed.

[0068] In addition, to achieve the above-mentioned purpose, the present application also proposes a computer-readable storage medium, on which a communication program is stored, and when the communication program is executed, the steps of the communication method described above are implemented.

[0069] In addition, to achieve the above-mentioned purpose, the present application also proposes a computer program product, wherein the computer program product includes a communication program, and when the communication program is executed by a processor, the steps of the communication method described above are implemented.

[0070] The present application sends the cell configuration information of the second cell to the user equipment, wherein the cell configuration information includes the configuration information of the on-demand synchronization signal block corresponding to the second cell, and the configuration information of the on-demand synchronization signal block includes at least one of the following: configuration information index of the on-demand synchronization signal block; state configuration information of the on-demand synchronization signal block; time domain resource configuration information of the on-demand synchronization signal block; transmission configuration information of the on-demand synchronization signal block; frequency domain resource configuration information of the on-demand synchronization signal block; measurement configuration information of the on-demand synchronization signal block. That is, in the embodiment of the present application, the cell configuration information sent by the first cell to the user equipment will carry the configuration information of the on-demand synchronization signal block, wherein the on-demand synchronization signal block indicates that the second cell will send a synchronization signal as required, and the configuration information of the on-demand synchronization signal block enables the user equipment to synchronize with the second cell through the on-demand synchronization signal block sent by the second cell, and since the configuration information of the on-demand synchronization signal block includes information such as time domain resource configuration information and transmission configuration information, it can be used to control the signal block sending period and the number of times it is sent, so the present application can complete the carrier aggregation of the first cell and the second cell while saving energy, and meet the control requirements for the sending period and the number of times it is sent during the aggregation process. This solution implements the application of an energy-saving technical solution based on an on-demand synchronization signal block (on-demand SSB) in a carrier aggregation scenario, and expands the application scenarios of on-demand SSB related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is a structural diagram of an electronic device of a hardware operating environment involved in an embodiment of the present application;

[0072] Figure 2 A schematic diagram of the scenario involved in the communication method of this application;

[0073] Figure 3This is a flow chart of the first embodiment of the communication method of the present application;

[0074] Figure 4 This is a flow chart of the second embodiment of the communication method of the present application;

[0075] Figure 5 This is a flow chart of the third embodiment of the communication method of the present application;

[0076] Figure 6 This is a flow chart of the fourth embodiment of the communication method of the present application.

[0077] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0078] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0079] Reference Figure 1 , Figure 1 A schematic diagram of the communication device structure of the hardware operating environment involved in the embodiment of the present application.

[0080] like Figure 1 As shown, the communication device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0081] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the communication device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0082] like Figure 1As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module and a communication program.

[0083] exist Figure 1 In the electronic device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the communication device of the present application can be set in the communication device, and the electronic device calls the communication program stored in the memory 1005 through the processor 1001, and executes the communication method provided in the embodiment of the present application.

[0084] In order to clearly illustrate the technical solution of the present application, the model scenario involved in the present application is now described.

[0085] For example, in a 5G system, there is a cell that supports inter-band carrier aggregation (inter-band CA) and belongs to a gNB in ​​the system. The cell broadcasts system information within the coverage area. Multiple UEs in the scenario demodulate the system information and establish an RRC (Radio Resource Control Connection) connection with the cell through the initial access process, and the cell is the primary cell (PCell) of the UE. The (multiple) SCells of the PCell can save energy through technologies including but not limited to SSB-less, DRX / DTX, etc. The operating frequency band of the SCell is different from that of the PCell, and it can belong to the gNB to which the PCell belongs. In this case, the PCell and the SCell can communicate through interfaces including but not limited to the internal interfaces of the gNB; the SCell may also belong to another gNB in ​​the system. In this case, the PCell and the SCell can communicate through interfaces including but not limited to the Xn interfaces. For the SCell, its on-demand SSB can provide different services to the UE at different time stages.

[0086] Further, for the embodiment of the present application, in the scenario of carrier aggregation, the scenarios that can be involved in applying the on-demand SSB technology are described. For example, from the UE perspective, the SCell activation process can be divided into several stages in chronological order, such as SCell configuration, SCell activation selection, SCell activation, and SCell activation completion. According to the functional requirements of each stage and the interaction process between UE base stations, the key nodes can be further extracted and the scenarios can be divided, such as referring to Figure 2 As shown:

[0087] Scenario 1: Before the UE receives SCell configuration information;

[0088] Scenario 2: From when the UE receives the SCell configuration information to before receiving the SCell activation command;

[0089] Scenario 2A: When the UE receives the SCell activation command;

[0090] Scenario 3: When the UE receives the SCell activation command;

[0091] Scenario 3A: From when the UE receives the SCell activation command to before the UE completes the SCell activation process (sending a measurement report);

[0092] Scenario 3B: After the UE completes the SCell activation process.

[0093] It is understandable that in the above scenario, the application of on-demand SSB technology can play a certain role, for example:

[0094] In scenario 2: the UE can perform L1 / L3 measurements and reports based on the received on-demand SSB to avoid blind SCell selection; the UE can perform time-frequency synchronization, ADC calibration (Analog-to-Digital Converter Calibration) and other operations based on the on-demand SSB to quickly turn the SCell into a known SCell;

[0095] In scenario 2A: the UE can perform RRM measurements (Radio Resource Management Measurements), CSI measurements (Channel State Information Measurements), time-frequency synchronization, cell search and other operations based on on-demand SSB to accelerate the SCell activation process;

[0096] In scenario 3A: the function is similar to that in scenario 2A. If the on-demand SSB configuration information has been sent in scenario 2A, it does not need to be sent again in this scenario.

[0097] In scenario 3B: on-demand SSB can be used to maintain a balance between UE synchronization / measurement performance and base station network energy efficiency; that is, the activated SCell may not send or send always-on SSB (SynchronizationSignal Block) at a lower frequency, which can also be called a normal synchronization signal block, or a periodically sent synchronization signal block. When there is a need for UE synchronization and measurement services, the on-demand SSB can be sent first to provide the UE with corresponding services.

[0098] It should be noted that the current version of the 3GPP standard (3GPP Release 18) lacks standardized control information related to on-demand SSB configuration information for carrier aggregation scenarios, such as RRC signaling, MAC CE (Medium Access Control Control Element), DCI (Downlink Control Information), etc. Therefore, new control instructions can be set or adjustments can be made based on the existing control signaling to carry the on-demand SSB configuration information in the carrier aggregation scenario. For example, the on-demand SSB configuration information may include: identity information of the SCell to which the on-demand SSB belongs, type configuration information of the on-demand SSB, time domain configuration information of the on-demand SSB, frequency domain configuration information of the on-demand SSB, measurement configuration information of the on-demand SSB, etc. Based on the role of on-demand SSB in different scenarios, the existing SCell configuration signaling (RRCReconfiguration->CellGroupConfig->SCellConfig) and SCell activation instructions (SCellActivation / Deactivation MAC CEs) can be modified, and some parameter modules can be added to them to carry the configuration information about on-demand SSB.

[0099] In actual applications, since RRC signaling has advantages over MAC CE, DCI and other control information carriers in terms of large control information carrying capacity, more flexible structure, and better scalability, in the embodiments of the present application, RRC signaling will be used to carry on-demand SSB activation information. In addition, based on the consideration of reducing the impact on the existing standard architecture, the embodiments of the present application will also adopt a solution that adjusts and modifies the existing RRC signaling.

[0100] In addition, it should be noted that, in order to clearly illustrate the technical solution of the present application, the sending of on-demand SSB configuration information in the above scenario 2 is taken as an example for explanation. For example, in the above scenario 2, since on-demand SSB can be used to provide synchronization / measurement reference signals to UE when / after SCell is added to configure, so as to avoid blind SCell activation and subsequent slower SCell activation process, the on-demand SSB configuration information can be sent together with the SCell addition configuration information, or it can be sent together with the SCell modification configuration information. In addition, since the existing standards support SCell fast activation, that is, SCell activation is performed while adding configuration to SCell. When the PCell sends SCell addition configuration information to the UE, the sCellState in SCellConfig can be configured to 'activated' so that the UE directly sets the SCell to the activated state while adding the SCell, and directly starts the SCell activation related process. Therefore, when SCell addition and SCell activation are performed simultaneously, the role of on-demand SSB is consistent with that in scenario 2A. At this time, some parameter modules can also be added to the SCell addition configuration information to carry the on-demand SSB configuration information. And in the subsequent steps, further description will be given.

[0101] The present application embodiment provides a communication method, the communication method is applied to a first cell, referring to Figure 3 , Figure 3 This is a flow chart of a first embodiment of a communication method of the present application.

[0102] In this embodiment, the communication method includes step S01:

[0103] Step S01, sending cell configuration information of a second cell to a user equipment, wherein the cell configuration information includes configuration information of an on-demand synchronization signal block of the second cell, and the configuration information of the on-demand synchronization signal block includes at least one of the following: configuration information index of the on-demand synchronization signal block; state configuration information of the on-demand synchronization signal block; time domain resource configuration information of the on-demand synchronization signal block; transmission configuration information of the on-demand synchronization signal block; frequency domain resource configuration information of the on-demand synchronization signal block; and measurement configuration information of the on-demand synchronization signal block.

[0104] It should be noted that, in this embodiment, the above communication method can be applied to the first cell, that is, the execution subject of the embodiment of the present application can be the first cell (that is, the above PCell, or gNB), or a device that can achieve the same or similar functions. This embodiment is not limited to this. In this embodiment, the communication method of the present application is described by taking the first cell as an example. Further, in actual applications, the user equipment (that is, UE, terminal equipment or user terminal equipment, such as smart phones, tablet computers, etc.) can first access the first cell and trigger carrier aggregation under certain conditions. At this time, the first cell can send relevant information of the second cell (that is, the above SCell) to the user equipment to help the user equipment access the new cell (that is, the second cell) for carrier aggregation.

[0105] Exemplarily, the first cell may send the cell configuration information of the second cell to the user equipment, and the cell configuration information of the second cell may be SCell addition configuration information or SCell modification configuration information. Accordingly, in an embodiment of the application, the configuration information of the on-demand synchronization signal block of the second cell will be added to the cell configuration information. Exemplarily, a new IE may be added to the RRC signaling of the SCell configuration information (i.e., the above-mentioned cell configuration information) to carry the on-demand SSB configuration information (i.e., the above-mentioned on-demand synchronization signal block configuration information). So that after receiving the configuration information of the on-demand synchronization signal block, the user equipment receives the on-demand synchronization signal block according to the configuration information of the on-demand synchronization signal block and accesses the second cell.

[0106] Exemplarily, the RRC signaling of the above SCell configuration information can be RRCReconfiguration->CellGroupConfig. Normally, CellGroupConfigIE (CellGroupConfiginformationelement, cell group configuration information element) is used to configure the master cell group (MCG) or the secondary cell group (SCG). A cell group includes a MAC (Medium Access Control) entity, a group of logical channels with related RLC (Radio Link Control) entities, and a primary cell (PCell) and one or more secondary cells (SCells). The content of CellGroupConfigIE can be as follows:

[0107]

[0108]

[0109] In the content of the above CellGroupConfig IE, onDemandSSBconfig-r19 refers to the configuration information of the above on-demand synchronization signal block.

[0110] Exemplarily, the RRC signaling of the SCell configuration information may be RRCReconfiguration->CellGroupConfig->SCellConfig. SCellConfig is used to add, modify, activate, and other configurations of SCell, that is, to inform the UE to add or modify the configuration information related to SCell. The content of SCellConfig may be as follows:

[0111]

[0112]

[0113] Similarly, in the content of the above SCellConfig, onDemandSSBconfig refers to the configuration information of the above-mentioned on-demand synchronization signal block, and r19 refers to the version information, and in subsequent steps r19 is the version information, so it will not be repeated here.

[0114] Exemplarily, the RRC signaling of the above SCell configuration information can be RRCReconfiguration->CellGroupConfig->sCellConfigCommon (ServingCellConfig-Common). Under normal circumstances, ServingCellConfigCommonIE is used to configure specific parameters of the UE serving cell. This IE contains parameters that the UE usually obtains from SSB, MIB (Master Information Block) or SIBs (System Information Blocks) when accessing a cell from an idle state. The network can provide the above-mentioned on-demand synchronization signal block configuration information through dedicated signaling when configuring the UE's secondary cell (SCells) or secondary cell group (SCG, Secondary Cell Group). The content of the ServingCellConfigCommon information element can be as follows:

[0115]

[0116]

[0117] Similarly, in the content of the above-mentioned ServingCellConfigCommon information element, onDemandSSBconfig-r19 refers to the configuration information of the above-mentioned on-demand synchronization signal block.

[0118] Exemplarily, the RRC signaling of the SCell configuration information can also be CellGroupConfig->SCellConfig->sCellConfigDedicated(ServingCellConfig)->BWP-DownlinkDedicated. In general, BWP-DownlinkDedicatedIE is used to configure the UE directional parameters of a downlink bandwidth unit (Bandwidth Part, BWP). The content of BWP-DownlinkDedicatedIE can be as follows:

[0119]

[0120] Similarly, in the content of the above-mentioned BWP-DownlinkDedicated IE, nDemandSSBconfig-r19 refers to the configuration information of the above-mentioned on-demand synchronization signal block.

[0121] It can be understood that, in an embodiment of the present application, the cell configuration information of the second cell is sent to the user equipment, wherein the cell configuration information includes the configuration information of the on-demand synchronization signal block corresponding to the second cell, and the configuration information of the on-demand synchronization signal block includes at least one of the following: configuration information index of the on-demand synchronization signal block; state configuration information of the on-demand synchronization signal block; time domain resource configuration information of the on-demand synchronization signal block; transmission configuration information of the on-demand synchronization signal block; frequency domain resource configuration information of the on-demand synchronization signal block; and measurement configuration information of the on-demand synchronization signal block. That is, in the embodiment of the present application, the cell configuration information sent by the first cell to the user equipment will carry the configuration information of the on-demand synchronization signal block, wherein the on-demand synchronization signal block indicates that the second cell will send a synchronization signal as required, and each related configuration in the configuration information of the on-demand synchronization signal block can enable the user equipment to synchronize with the second cell through the on-demand synchronization signal block sent by the second cell, and since the configuration information of the on-demand synchronization signal block includes information such as time domain resource configuration information and transmission configuration information, it can be used to adjust and control the signal block sending period and the number of times it is sent, so the present application can complete the carrier aggregation of the first cell and the second cell while saving energy, and meet the control requirements for the sending period and the number of times it is sent during the aggregation process. Therefore, this solution realizes the application of energy-saving technical solutions based on on-demand synchronization signal blocks in carrier aggregation scenarios, and expands the application scenarios of technologies related to on-demand synchronization signal blocks.

[0122] Furthermore, the configuration information of the on-demand synchronization signal block may include: at least one of the configuration information index of the on-demand synchronization signal block, the state configuration information of the on-demand synchronization signal block, the time domain resource configuration information of the on-demand synchronization signal block, the transmission configuration information of the on-demand synchronization signal block, the frequency domain resource configuration information of the on-demand synchronization signal block, and the measurement configuration information of the on-demand synchronization signal block. It should be noted that the technicians can construct the configuration information of the on-demand synchronization signal block according to actual needs based on one or more of the above configuration information index, state configuration information, time domain resource configuration information, transmission configuration information, frequency domain resource configuration information, and measurement configuration information. Preferably, the configuration information of the on-demand synchronization signal block includes the above configuration information index, state configuration information, time domain resource configuration information, transmission configuration information, frequency domain resource configuration information, and measurement configuration information.

[0123] In a feasible implementation manner, the configuration information index is used to indicate that the user equipment uses configuration information of the on-demand synchronization signal block.

[0124] Exemplarily, in this embodiment, the configuration information of the on-demand synchronization signal block may include a configuration information index of the on-demand synchronization signal block. The configuration information index of the on-demand synchronization signal block is used to inform the user equipment to use the configuration information corresponding to the configuration information index, that is, the configuration information of the on-demand synchronization signal block. For example, after the user equipment receives the configuration information index, it can determine to use the configuration information of the on-demand synchronization signal block corresponding to the configuration information index to receive the on-demand synchronization signal block sent by the second cell, thereby accessing the second cell for carrier aggregation.

[0125] In a feasible implementation manner, the user equipment stores the configuration information index and the configuration information corresponding to the configuration information index, or stores multiple groups of configuration information indexes and multiple groups of configuration information corresponding to the multiple groups of configuration information indexes.

[0126] It should be noted that in actual applications, the user device may pre-store a configuration information index and the specific content of the configuration information corresponding to the configuration information index, or store multiple groups of configuration information indexes and the specific content of multiple groups of configuration information corresponding to the multiple groups of configuration information indexes.

[0127] Exemplarily, in actual applications, the configuration information of the on-demand synchronization signal block may only include the configuration information index. Accordingly, the user equipment may query locally according to the received configuration information index, thereby obtaining the specific content of the configuration information corresponding to the configuration information index. The user equipment then receives the on-demand synchronization signal block sent by the second cell according to the specific content of the configuration information, completes synchronization based on the on-demand synchronization block, and accesses the second cell.

[0128] In addition, it should be noted that the configuration information of the on-demand synchronization signal block may also include the specific content of the complete configuration information, that is, the first cell may inform the user equipment of the specific content of the complete configuration information through the configuration information.

[0129] In a feasible implementation manner, the configuration information index is carried by a radio resource control information element, and the configuration information index includes a parameter name and a parameter value, and the parameter value is a shaping element.

[0130] Exemplarily, the configuration information index may be carried by a newly added radio resource control information element (the newly added radio resource control information element is different from the existing radio resource control information element), such as the newly added radio resource control information element may be a newly added OnDemandSSBconfigId IE. Accordingly, the configuration information index may include a parameter name and a parameter value. In general, the parameter value is an integer element, which means that the parameter value is limited to an integer type, thereby ensuring the legitimacy of the parameter value.

[0131] In a feasible implementation manner, the upper threshold of the parameter value is constrained by multiplicity and type constraint definitions, and the upper threshold is 16, 32, or 64.

[0132] Exemplarily, the upper threshold of the parameter value can be constrained by multiplicity and type constraint definition, and the upper threshold can be 16, 32, 64 or other values. Multiplicity and type constraints are defined in some chapters of the 3GPP protocol to limit the value range and data type of the parameters involved in the protocol.

[0133] The content of the newly added OnDemandSSBconfigId IE can be as follows:

[0134]

[0135] In the above content, INTEGER(0..maxNrofOnDemandSSBconfigs-1) represents the numerical type of the parameter value in the configuration information index, as well as the value range, which is 0 to maxNrofOnDemandSSBconfigs-1.

[0136] Furthermore, the upper threshold value restrictions added to the multiplicity and type constraint definitions can be as follows:

[0137]

[0138] In the above content, INTEGER::=64--Maximum number of on-demand SSB configs in a resource set limits the upper threshold of the parameter value to 64. It should be noted that the part 64 is only used for example, and in actual applications, the upper threshold may also be other values ​​such as 16 and 32.

[0139] In a feasible implementation manner, the status configuration information is used to characterize the activation and deactivation status of the on-demand synchronization signal block, wherein if the value of the status configuration information is a first preset value, it characterizes the activation of the on-demand synchronization signal block; if the value of the status configuration information is a second preset value, it characterizes the deactivation of the on-demand synchronization signal block.

[0140] It should be noted that the state of the on-demand synchronization signal block can include two states, namely, an activated state and a deactivated state. Among them, when in the activated state, it indicates that the UE needs to receive and process the on-demand synchronization signal block sent by the second cell. Conversely, in the deactivated state, it indicates that the UE does not need to receive and process the on-demand synchronization signal block sent by the second cell. The triggering mechanism or strategy for the activation and deactivation states of the on-demand synchronization signal block can be set by the technical staff according to actual needs, which will not be repeated here.

[0141] Exemplarily, in this embodiment, the state configuration information of the on-demand synchronization signal block can be used to characterize the activation and deactivation states of the on-demand synchronization signal block. For example, a special field can be set as the state configuration information in the configuration information, and accordingly, the value in the state configuration information can be used to distinguish different states. If the value of the state configuration information is a first preset value, it characterizes the activation state, and conversely, if the value of the state configuration information is a second preset value, it characterizes the deactivation state. Among them, the first preset value and the second preset value are different. It can be understood that, since in this embodiment, the on-demand synchronization signal block mainly includes two states, the value on a bit can be used to characterize different states, such as the first preset value can be 0, the second preset value can be 1; or, the first preset value can be 1, the second preset value can be 0, and the specific value can also be set by the technician. In addition, in the case where the state configuration information can be empty, a default condition can be set, that is, if the state configuration information is empty, the on-demand synchronization signal block is deactivated by default. Exemplarily, the state configuration information in the configuration information of the on-demand synchronization signal block can be specifically as follows:

[0142] onDemandSSBState-r19::=ENUMERATED{activated}OPTIONAL,--Need S

[0143] In the above content, onDemandSSBState is the state configuration information, and ENUMERATED{activated} represents a type of value corresponding to a state.

[0144] In a feasible implementation manner, the time domain resource configuration information includes at least one of the following: the transmission period of the on-demand synchronization signal block; the activation beam position configuration of the on-demand synchronization signal block; and the transmission time offset between the on-demand synchronization signal block and the normal synchronization signal block of the second cell.

[0145] It should be noted that, in this embodiment, the configuration information of the on-demand synchronization signal block may also include the time domain resource configuration information of the on-demand synchronization signal block. In the case where the configuration information of the required synchronization signal block includes the time domain resource configuration information, the time domain resource configuration information may include at least one of the transmission period of the on-demand synchronization signal block, the activation beam position configuration of the on-demand synchronization signal block, and the transmission time offset between the on-demand synchronization signal block and the common synchronization signal block of the second cell.

[0146] Exemplarily, the transmission period of the on-demand synchronization signal block refers to the transmission interval between adjacent on-demand synchronization signal blocks in a certain time period (such as the transmission time period of the synchronization signal block) when the second cell sends the on-demand synchronization signal block. In addition, if the transmission period is empty, ssb-periodicityServingCell in ServingCellConfigCommon can be used by default as the transmission period of the on-demand synchronization signal block. That is, if the transmission period of the on-demand synchronization signal block is, the transmission period of the ordinary synchronization signal block can be used by default as the transmission period of the on-demand synchronization signal block.

[0147] The activation beam position configuration of the on-demand synchronization signal block is used to inform the user equipment which beams in the current on-demand SSB beam group (that is, the on-demand synchronization signal block beam group) are activated (actually transmitted). The activation beam position configuration of the on-demand synchronization signal block can be represented in the form of a bitmap. For example, in the activation beam position configuration, the first bit corresponds to the on-demand SSB sequence number 0, the second bit corresponds to the on-demand SSB sequence number 1, and so on. Accordingly, if the value of a bit in the bitmap is 0, it means that the on-demand SSB corresponding to the bit is not transmitted; conversely, if the value of a bit in the bitmap is 1, it means that the on-demand SSB corresponding to the bit is transmitted. By clarifying the position of the on-demand SSB, it can be ensured that the UE can correctly receive and process the on-demand SSB, thereby improving the stability and reliability of the system.

[0148] As for the transmission time offset between the on-demand synchronization signal block and the normal synchronization signal block of the second cell, it can refer to the time deviation between the start of sending the normal synchronization signal block and the start of sending the on-demand synchronization signal block. For example, assuming that the normal SSB starts to be sent in the reference subframe SF1 (referring to the first subframe of each half-frame Half-Frame), the on-demand SSB starts to be sent at SF1+TimeOffset, and TimeOffset is the transmission time offset. In addition, when the transmission time offset is empty, it can be assumed that there is no offset in the time domain position between the on-demand synchronization signal block and the normal synchronization signal block. In the configuration information of the on-demand synchronization signal block, the time domain resource configuration information can be specifically as follows:

[0149]

[0150]

[0151] In the above content, ncd-onDemandSSB-Periodicity represents the transmission period, and ENUMERATED{ms1,ms2,ms3,ms4,ms5,ms10,ms20,ms40} represents the optional transmission period. ncd-onDemandSSB-PositionsInBurst represents the activated beam position configuration, and shortBitmap, mediumBitmap and longBitmap represent the 4-bit bitmap, 8-bit bitmap and 64-bit bitmap respectively. ncd-onDemandSSB-TimeOffset represents the transmission time offset between the on-demand synchronization signal block and the ordinary synchronization signal block of the second cell, and ENUMERATED{ms1,ms2,ms3,ms4,ms5,ms10,ms20,spare1} represents the optional transmission time offset. It should be noted that in actual applications, the above transmission period, bitmap size and transmission time offset can be set according to actual needs.

[0152] In a feasible implementation manner, the transmission configuration information includes: time domain position information of the start of transmission of the on-demand synchronization signal block; time domain position information of the end of transmission of the on-demand synchronization signal block; and the number of transmissions of the on-demand synchronization signal block.

[0153] It should be noted that the configuration information of the on-demand synchronization signal block may include transmission configuration information. The transmission configuration information includes the time domain position information of the start transmission of the on-demand synchronization signal block; the time domain position information of the end transmission of the on-demand synchronization signal block; and the number of transmissions of the on-demand synchronization signal block. The time domain position information of the start transmission of the on-demand synchronization signal block is used to inform the user equipment when the second cell starts transmitting the on-demand synchronization signal block; the time domain position information of the end transmission of the on-demand synchronization signal block is used to inform the user equipment when the second cell ends transmitting the on-demand synchronization signal block; the number of transmissions of the on-demand synchronization signal block represents how many times the on-demand synchronization signal block will be transmitted from the start transmission to the end transmission of the on-demand synchronization signal block.

[0154] In a feasible implementation manner, the time domain location information at which the on-demand synchronization signal block starts to be transmitted is one of the following:

[0155] The time interval from when the user equipment receives the configuration information to when the second cell starts sending the on-demand synchronization signal block;

[0156] The time interval from when the user equipment prepares to send confirmation information to when the second cell starts to send the on-demand synchronization signal block, the confirmation information being hybrid automatic repeat request confirmation information after the user equipment receives the configuration information;

[0157] The time interval from when the user equipment receives the configuration information to when the second cell starts to send the first transmission time slot position of the on-demand synchronization signal block;

[0158] The second cell sends a reference time slot position of the on-demand synchronization signal block.

[0159] It should be noted that the time domain position information for starting transmission of the on-demand synchronization signal block can correspond to an anchor point set first, and the time domain position information for starting transmission can be represented by the relative position relationship with the anchor point.

[0160] Exemplarily, if the anchor point is set to the time point when the user equipment receives the configuration information (i.e., the configuration information of the on-demand synchronization signal block mentioned above), the time domain position information for the start of transmission of the on-demand synchronization signal block may be the time interval from the user equipment receiving the configuration information to the second cell starting to send the on-demand synchronization signal block.

[0161] If the anchor point is set to the time point when the user equipment is ready to send the confirmation information, the time domain location information of the start of transmission of the on-demand synchronization signal block can be the time interval from when the user equipment is ready to send the confirmation information to when the second cell starts to send the on-demand synchronization signal block. It is worth noting that the above confirmation information refers to the confirmation information of the hybrid automatic repeat request after the user equipment receives the configuration information, that is, the information that the user equipment receives the configuration information and returns to the first cell after confirmation to confirm that the configuration information has been received.

[0162] If the anchor point is set to the time point when the user equipment receives the configuration information, the time domain position information for starting transmission of the on-demand synchronization signal block can also be the time interval from the user equipment receiving the configuration information to the first transmission time slot position when the second cell starts sending the on-demand synchronization signal block.

[0163] In addition, the anchor point may not be set, such as the time domain position information for the start of transmission of the on-demand synchronization signal block is the reference time slot position for the second cell to send the on-demand synchronization signal block, that is, the absolute time slot for the second cell to send the on-demand synchronization signal block.

[0164] In a feasible implementation manner, the time domain location information at which the on-demand synchronization signal block ends transmission is one of the following:

[0165] The time interval from when the second cell starts sending the on-demand synchronization signal block to when it stops sending the on-demand synchronization signal block;

[0166] The time interval from when the user equipment receives the configuration information to when the second cell stops sending the on-demand synchronization signal block;

[0167] The time interval from when the user equipment prepares to send the confirmation information to when the second cell finishes sending the on-demand synchronization signal block;

[0168] A time interval from the user equipment sending the measurement result to the second cell finishing sending the on-demand synchronization signal block;

[0169] The second cell ends sending the time slot position of the on-demand synchronization signal block.

[0170] Similarly, for the time domain position information of the end transmission of the on-demand synchronization signal block, an anchor point can also be set first, and the time domain position information of the end transmission of the on-demand synchronization signal block can be represented by the relative position relationship with the anchor point.

[0171] Exemplarily, if the anchor point is set to the time point when the second cell starts sending the on-demand synchronization signal block, the time domain position information for the end of transmission of the on-demand synchronization signal block is the time interval from when the second cell starts sending the on-demand synchronization signal block to when it ends sending the on-demand synchronization signal block.

[0172] If the anchor point is set to the time point when the user equipment receives the configuration information (i.e., the configuration information of the on-demand synchronization signal block), the time domain position information at which the on-demand synchronization signal block ends transmission is the time interval from when the user equipment receives the configuration information to when the second cell ends sending the on-demand synchronization signal block.

[0173] If the anchor point is set to the time point when the user equipment is ready to send confirmation information, the time domain position information of the end of transmission of the on-demand synchronization signal block is the time interval from when the user equipment is ready to send the confirmation information to when the second cell ends sending the on-demand synchronization signal block. Similarly, the confirmation information refers to the confirmation information of the hybrid automatic repeat request after the user equipment receives the configuration information, that is, the user equipment receives the configuration information, and after confirmation, returns the information confirming the receipt of the configuration information to the first cell.

[0174] If the anchor point is set to the time point when the user equipment sends the measurement result, the time domain position information of the end of transmission of the on-demand synchronization signal block is the time interval from the user equipment sending the measurement result to the end of sending the on-demand synchronization signal block in the second cell. It can be understood that the measurement result sent by the user equipment refers to the result of the user equipment testing the network quality of the second cell, such as the measurement result may include the measurement values ​​of RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality), etc., which will not be repeated here, and the measurement result will also be sent to the first cell.

[0175] Similarly, the anchor point may not be set. In this case, the time domain position information of the end of transmission of the on-demand synchronization signal block can be the time slot position where the second cell ends sending the on-demand synchronization signal block, that is, the absolute time slot when the second cell ends sending the on-demand synchronization signal block.

[0176] It is also worth noting that in the configuration information of the on-demand synchronization signal block, the specific content of the transmission configuration information may be as follows:

[0177]

[0178] In the above content, T1 is the time domain location information of the start of transmission of the on-demand synchronization signal block. T1 can indicate the time from the UE receiving the on-demand SSB configuration information to the second cell starting to transmit the on-demand SSB in slot units. If T1 is slot1, it means that the on-demand SSB starts to be transmitted one slot after the on-demand SSB configuration information is sent. If T1 is empty, the on-demand SSB configuration signaling and on-demand SSB transmission can be carried out simultaneously.

[0179] Alternatively, T1 can indicate the time between when the UE receives the on-demand SSB configuration signaling and is ready to reply to the corresponding HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgment) and when the SCell transmits the on-demand SSB. If TI is slot1, it means that the on-demand SSB starts to be transmitted one slot after the HARQ-ACK is sent. If this field is empty, the HARQ-ACK and on-demand SSB transmissions are performed simultaneously.

[0180] Alternatively, T1 can be the time between the UE receiving the on-demand SSB configuration signaling and the SCell transmitting the first transmission position of the on-demand SSB burst. If T1 is slot1, it means that the first transmission position of the on-demand SSB burst is one slot after the on-demand SSB configuration signaling is sent. If T1 is empty, the on-demand SSB configuration signaling and the on-demand SSB burst transmission are performed simultaneously.

[0181] Alternatively, T1 indicates the absolute time of the SCell to transmit on-demand SSB in slot units. Slot1 represents the first slot of the current SFN. If T1 is empty, there is no on-demand SSB transmission.

[0182] In the above content, ENUMERATED{slot1,slot2,slot4,slot8,slot16,slot32,slot64,spare1} for T1 indicates the selectable values ​​of T1. Similarly, the technicians can also set other values ​​according to the requirements.

[0183] In the above content, T2 is the time domain position information of the end of transmission of the on-demand synchronization signal block. For example, this field indicates the time between the SCell transmitting on-demand SSB and the SCell ending transmission of on-demand SSB in ms. ms10 means that the SCell ends transmission of on-demand SSB 10ms after the start of on-demand SSB transmission. If this field is empty, the UE can use ms10 as the value of T2 by default.

[0184] Alternatively, T2 indicates the time from when the UE receives the on-demand SSB configuration information to when the SCell ends transmitting the on-demand SSB in ms. If T2 is ms10, it means that the SCell ends transmitting the on-demand SSB 10ms after the UE receives the on-demand SSB configuration signaling. If T2 is empty, it means that the UE can use ms10 as the value of T2 by default.

[0185] Alternatively, T2 indicates the time in ms from when the UE receives the on-demand SSB configuration information and prepares to reply to the corresponding HARQ-ACK to when the SCell ends transmitting the on-demand SSB. If T2 is ms10, it means that when the UE replies to the HARQ-AC 10ms later, the SCell ends transmitting the on-demand SSB. If T2 is empty, the UE can use ms10 as the value of T2 by default.

[0186] Alternatively, T2 indicates the time in ms from when the UE reports the measurement result to when the SCell ends transmitting on-demand SSB. If T2 is ms10, it means that 10 ms after the UE sends the measurement report based on the measurement configuration in the MO (Measurement Object), the SCell ends transmitting on-demand SSB. If T2 is empty, the UE can use ms10 as the value of T2 by default.

[0187] Alternatively, T2 indicates the absolute time when the SCell ends the transmission of on-demand SSB in units of slots. If T2 is slot1, it means that the first slot of the current SFN is the time when the transmission of on-demand SSB ends. If T2 is empty, it can be assumed that the SCell does not end the transmission of on-demand SSB for the time being.

[0188] For T2, ENUMERATED{ms10,ms20,ms40,ms80,ms160,ms320,ms640,ms1280,ms1920,ms2560,spare6,spare5,spare4,spare3,spare2,spare1} is an optional value of T2 and can also be set by the technician according to actual needs.

[0189] In the above content, N indicates the number of transmissions of the on-demand synchronization signal block. N may indicate the number of transmissions of the on-demand SSB. If N is empty, the UE may use 20 as the value of N by default. Alternatively, N may indicate the number of transmissions of the on-demand SSBburst. If N is empty, the UE may use 20 as the value of N by default.

[0190] In a feasible implementation manner, the frequency domain resource configuration information includes at least one of the following: the subcarrier spacing of the on-demand synchronization signal block; the absolute frequency position of the on-demand synchronization signal block; the list of frequency bands to which the on-demand synchronization signal block belongs; the absolute frequency point A position of the reference resource block; the special carrier list of the subcarrier spacing; and the reference cell of the on-demand synchronization signal block.

[0191] Exemplarily, the configuration information of the on-demand synchronization signal block may also include the frequency domain resource configuration information of the on-demand synchronization signal block. Accordingly, in the case where the configuration information includes the frequency domain resource configuration information, the frequency domain resource configuration information may also include one or more of the subcarrier spacing of the on-demand synchronization signal block, the absolute frequency position of the on-demand synchronization signal block, the frequency band list to which the on-demand synchronization signal block belongs, the absolute frequency point A position of the reference resource block, the special carrier list of the subcarrier spacing, and the reference cell of the on-demand synchronization signal block. Among them, preferably, the configuration information of the on-demand synchronization signal block includes the subcarrier spacing of the on-demand synchronization signal block, the absolute frequency position of the on-demand synchronization signal block, the frequency band list to which the on-demand synchronization signal block belongs, the absolute frequency point A position of the reference resource block, the special carrier list of the subcarrier spacing, and the reference cell of the on-demand synchronization signal block. In this case, the specific content of the frequency domain resource configuration information in the configuration information of the on-demand synchronization signal block may be as follows:

[0192]

[0193]

[0194] In the above content, OnDemandSSBFrequencyInfo represents the frequency domain resource configuration information. Furthermore, the above onDemandSSB-subcarrierSpacing refers to the subcarrier spacing of the on-demand synchronization signal block, and the specific subcarrier spacing can be set according to demand, such as different subcarrier spacing can be set for different frequency bands. For example, FR1: 15or30kHz (that is, in the FR1 frequency band, the subcarrier spacing can be 15 or 30kHz); FR2-1: 120or240kHz; FR2-2: 120,480,or960kHz.

[0195] The above absoluteFrequencySSB represents the absolute frequency position of the on-demand synchronization signal block, which indicates the frequency of the on-demand SSB sent by the second cell. If the on-demand SSB is CD-SSB (Cell Defining SSB), the value of the above absolute frequency position is the frequency value supported by the synchronization grid. If the absolute frequency position is empty, the remaining related parameters of the on-demand SSB should also be empty, and the UE uses the reference cell indicated by onDemandSSB-referenceCell (on-demand synchronization signal block-reference cell) to obtain time synchronization by default.

[0196] The above-mentioned onDemandSSB-frequencyBandList represents the frequency band list to which the on-demand synchronization signal block belongs. The list only contains one frequency band to which this carrier belongs, and under normal circumstances, multiple frequency band values ​​will not be supported.

[0197] The above absoluteFrequencyPointA represents the absolute frequency point A position of the reference resource block, that is, the absolute frequency position of the reference resource block (CRB 0, Common Resource Block 0), and its lowest subcarrier is also called PointA.

[0198] The above-mentioned onDemandSSB-scs-SpecificCarrierList represents a special carrier list with subcarrier spacing, which contains a series of carrier configurations with different subcarrier spacings, and the network configures at least one scs-SpecificCarrier for each SCS (Subcarrier Spacing) used, and scs-SpecificCarrier can represent a sequence. The parameters in the sequence may include offsetToCarrier: frequency domain offset, indicating the frequency domain offset from Point A (the center position of the minimum subcarrier of the reference resource block CRB 0) to the minimum subcarrier of the carrier; carrierBandwidth: the bandwidth of the carrier; txDirectCurrentLocation: indicating the downlink DC subcarrier position of each parameter set in the downlink direction, etc.

[0199] The onDemandSSB-referenceCell represents the reference cell of the on-demand synchronization signal block, for example, it can be the cell that provides time synchronization reference and AGC (Automatic Gain Control) resources for the SCell to which the on-demand SSB belongs. If the reference cell is an SCell or PSCell, it should be an activated SCell or PSCell (Primary Secondary Cell).

[0200] In a feasible implementation manner, the measurement configuration information includes at least one of a measurement time domain period, a measurement offset, and a measurement duration.

[0201] It should be noted that the configuration information of the on-demand synchronization signal block may also include measurement configuration information of the on-demand synchronization signal block. Accordingly, when the measurement configuration information of the on-demand synchronization signal block exists in the configuration information, the measurement configuration information may include one or more of the measurement time domain period, the measurement offset, and the measurement duration. Preferably, the measurement configuration information includes the measurement time domain period, the measurement offset, and the measurement duration. Accordingly, the expression form of the measurement configuration information in the configuration information may be as follows:

[0202] onDemandSSBsmtc-r19 SSB-MTC OPTIONAL--Need S

[0203] It is worth noting that in the above content, onDemandSSBsmtc represents the measurement configuration information, and the measurement configuration information may include the measurement time domain period, measurement offset, and measurement duration of the on-demand SSB of the UE testing SCell, so as to avoid the problem of UE blind detection of SSB and reduce the difficulty of UE detection.

[0204] In a feasible implementation manner, when the measurement configuration information is empty, historical measurement configuration information is used as the measurement configuration information.

[0205] Exemplarily, if the measurement configuration information is empty, the UE may use the historical measurement configuration information as the measurement configuration information by default. For example, the UE may use the SMTC configuration (SSBMeasurement Timing Configuration) in the measObjectNR of the RRC information received last time by default.

[0206] In addition, in order to illustrate the contents that may be included in the configuration information of the on-demand synchronization signal block, a comprehensive description is now given of the contents of the configuration information involved in the above content. In a feasible implementation, the configuration information of the on-demand synchronization signal block (OnDemandSSBconfig information element, or OnDemandSSBconfig IE) may include the following contents:

[0207]

[0208]

[0209]

[0210]

[0211] It should be noted that for the explanation of the above part, please refer to the previous content, so it will not be repeated here one by one. It can be understood that in an embodiment of the present application, the configuration information of on-demand SSB, the configuration information of cell-definingon-demand SSB, the configuration information of non-cell-definingon-demand SSB, the time domain resource configuration information of on-demand SSB, the frequency domain resource configuration information of on-demand SSB and the measurement configuration information of on-demand SSB can be set in OnDemandSSBconfigIE. And if the on-demand SSB is CD-SSB, the configuration information can also make it maintain the same mode as the ordinary SSB of SCell. On this basis, the UE can locate the time domain position of the on-demand SSB based on cd-onDemandSSB-PositionsInBurst and the rest of the configuration information and receive the on-demand SSB, thereby implementing the on-demandSSB technology in the scenario of carrier aggregation and achieving energy saving. In addition, if the on-demand SSB is NCD-SSB, there is no need to consider the situation where the legacy UE uses the on-demand SSB for initial access, and the on-demand SSB usually only lasts for a short time or number of times, so you can consider setting a shorter period to speed up the UE's SCell activation process (time-frequency synchronization, L1 / L3 measurement, etc.). In addition, the time domain resource configuration information of the on-demand SSB is a new parameter set exclusive to the on-demand SSB. When setting it, you need to confirm the rationality of the time domain value to ensure that the on-demand SSB is located in the appropriate time domain position; you can choose to use the number of transmissions to represent the time domain length of the on-demand SSB. Finally, in scenario 2, the on-demand SSB needs to be used as a reference signal for L1 / L3 measurements. In this embodiment, the measurement configuration information (SSB-MTC) of the on-demand SSB is also set to avoid blind detection and reduce the difficulty of detection.

[0212] In a feasible implementation manner, the location of the configuration information of the on-demand synchronization signal block in the cell configuration information is one of the following: the cell group configuration level in the cell configuration information; the secondary cell configuration level in the cell configuration information; the cell common configuration level in the cell configuration information; the directional downlink bandwidth unit configuration level in the cell configuration information.

[0213] It should be noted that the configuration information of the on-demand synchronization signal block can be located in multiple locations in the cell configuration information. For example, it can be at the cell group configuration level in the cell configuration information, that is, RRCReconfiguration->CellGroupConfig; it can be at the secondary cell configuration level in the cell configuration information, that is, RRCReconfiguration->CellGroupConfig->SCellConfig; it can be at the cell common configuration level in the cell configuration information, that is, RRCReconfiguration->CellGroupConfig->sCellConfigCommon (ServingCellConfig-Common); it can be at the directional downlink bandwidth unit configuration level in the cell configuration information, that is, CellGroupConfig->SCellConfig->sCellConfigDedicated (ServingCellConfig)->BWP-DownlinkDedicated. The specific location can be set according to actual needs, and will not be repeated this time.

[0214] Reference Figure 4 , Figure 4 This is a flow chart of the second embodiment of the communication method in the present application. In the embodiment of the present application, the communication method is applied to the first cell, and the communication method includes step S10:

[0215] Step S10: Send cell configuration information of the second cell to the user equipment, where the cell configuration information includes a state configuration of an on-demand synchronization signal block corresponding to the second cell.

[0216] It should be noted that the above-mentioned communication method can be applied to the first cell, that is, the executor of the embodiment of the present application can be the first cell (that is, the above-mentioned PCell, or gNB), or a device that can achieve the same or similar functions, and this embodiment does not impose any restrictions on this.

[0217] Exemplarily, the first cell may send the cell configuration information of the second cell to the user equipment. Accordingly, the cell configuration information may include the status configuration of the on-demand synchronization signal block corresponding to the second cell. The status configuration of the on-demand synchronization signal block is used to inform the user equipment whether the on-demand synchronization signal block is activated. That is, after the user equipment receives the cell configuration information, it can determine whether the on-demand synchronization signal block is activated according to the status configuration of the on-demand synchronization signal block in the cell configuration information. For example, after the status configuration of the on-demand synchronization signal block is added to the CellGroupConfig->SCellConfig level in the cell configuration information of the second cell, the specific configuration may be as follows:

[0218]

[0219]

[0220] In the above content, onDemandSSBState represents the state configuration of the on-demand synchronization signal block, and it specifies the on-demand SSB state of the SCell. It should be noted that in actual applications, the on-demand SSB state can be represented by the specific value of onDemandSSBState, or by the existence or non-existence of onDemandSSBState. For example, when the on-demandSSB is deactivated, the value of the state configuration can be set to 0; when the on-demand SSB is activated, the value of the state configuration can be set to 1. In addition, if this field is empty, the UE can default to on-demand SSB deactivation. Optionally, in the case of SCell (fast) activation, on-demand SSB deactivation can also be defaulted. Optionally, the above-mentioned SCellActivation field can be used to indicate whether the SCell is (fast) activated. If the SCell is (fast) activated, this field exists; otherwise, this field does not exist.

[0221] In a feasible implementation manner, the status configuration of the on-demand synchronization signal block is located in the configuration information of the on-demand synchronization signal block, or is located in parallel with the configuration information in the cell configuration information.

[0222] Exemplarily, there may be multiple locations where the status configuration of the on-demand synchronization signal block is located in the cell configuration information. For example, the status configuration of the on-demand synchronization signal block may exist in the configuration information of the on-demand synchronization signal block in the cell configuration information. Alternatively, the status configuration of the synchronization signal block may exist in the cell configuration information in parallel with the configuration information of the on-demand synchronization signal block. It is understandable that, in the case where the status indication is not set in the configuration information of the on-demand synchronization signal block, that is, the status indication information of the on-demand synchronization block is decoupled from other configuration information, the flexibility of the system configuration can be improved, so that the network can separately configure status-related indication information for the UE at certain levels.

[0223] Reference Figure 5 , Figure 5 This is a flow chart of the third embodiment of the communication method in the present application. In the embodiment of the present application, the communication method is applied to a user equipment, and the communication method includes steps S100 to S200:

[0224] Step S100, receiving cell configuration information of a second cell sent by a first cell;

[0225] Step S200: Determine the activation state of the on-demand synchronization signal block of the second cell based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information.

[0226] It should be noted that the above communication method can be applied to user equipment, that is, in this embodiment, the execution subject of the above communication method can be user equipment.

[0227] Exemplarily, after receiving the cell configuration information of the second cell sent by the first cell, the user equipment can check whether there are relevant fields for the status configuration of the on-demand synchronization signal block in the cell configuration information, that is, the existence of the status configuration of the above-mentioned on-demand synchronization signal block, and then determine the activation status of the on-demand synchronization signal block of the second cell based on the existence. For example, under normal circumstances, if there is a status configuration of the on-demand synchronization signal block in the cell configuration information, the user equipment can determine that the on-demand synchronization signal block of the second cell is in an activated state. Alternatively, if there is a status configuration of the on-demand synchronization signal block in the cell configuration information, the user equipment can determine that the on-demand synchronization signal block of the second cell is in a deactivated state. The specific rules can be selected by the technical personnel based on the above examples, and will not be repeated here.

[0228] In a feasible implementation manner, the determining the activation state of the on-demand synchronization signal block of the second cell based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information includes step S210:

[0229] Step S210: If the cell configuration information includes a status configuration of an on-demand synchronization signal block corresponding to the second cell, it is determined that the on-demand synchronization signal block of the second cell has been activated.

[0230] Exemplarily, if the user equipment detects the relevant fields of the state configuration of the on-demand synchronization signal block in the cell configuration information, that is, the state configuration of the on-demand synchronization signal block corresponding to the second cell exists in the cell configuration information, the user equipment can determine that the on-demand synchronization signal block of the second cell has been activated, and accordingly, the UE can perform subsequent processes related to on-demand SSB. Conversely, if there is no state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, the user equipment can determine that the on-demand synchronization signal block of the second cell is not activated.

[0231] Accordingly, a description of the judgment logic flow of the user equipment may be added to the part related to the user equipment in the 3GPP protocol, which may be specifically as follows:

[0232] For the case where the cell configuration information is added for the cell:

[0233]

[0234]

[0235] That is, when the UE receives the SCell addition list, it checks whether the SCell in the specified list is configured with the onDemandSSBState field. If the field is configured, it means that the on-demand SSB of the SCell has been activated, and the UE can perform subsequent on-demand SSB related processes. In another feasible way, the association between onDemandSSBState and sCellState can be set, that is, when sCellState exists, onDemandSSBState is also considered to exist, and accordingly, the activation or not of on-demand SSB is judged.

[0236] For the case where the cell configuration information is cell release:

[0237]

[0238]

[0239] That is, when the UE receives the SCell release list, it checks whether the SCell in the specified list is configured with the onDemandSSBState field. If the field is configured, it means that the on-demand SSB of the SCell has been activated, and the UE can perform subsequent on-demand SSB related processes.

[0240] For the case where the cell configuration information is modified for the cell:

[0241]

[0242] When the UE receives the SCell modification list, it checks whether the SCell in the specified list is the currently configured SCell. If it is and the onDemandSSBState field is configured in sCellConfigDedicated, it means that the on-demand SSB of the SCell has been activated and the UE can perform subsequent on-demand SSB related processes.

[0243] It can be understood that in this embodiment, it will support indicating the activation / deactivation of on-demand SSB through RRC signaling (that is, the above-mentioned cell configuration information). And the above scheme can be used to indicate the activation / deactivation of on-demand SSB in scenarios such as SCell addition, on-demand SSB configuration, SCell modification, and SCell release.

[0244] In a feasible implementation manner, the step of determining the activation state of the on-demand synchronization signal block of the second cell based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information further includes step S220:

[0245] Step S220: If the cell configuration information contains a status configuration of the on-demand synchronization signal block corresponding to the second cell, and the cell configuration information is a cell release configuration signaling, it is determined that the on-demand synchronization signal block of the second cell is deactivated.

[0246] Exemplarily, when determining the activation state of the on-demand synchronization signal block of the second cell, in addition to judging based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, it can also be judged in combination with the type of the cell configuration information. For example, if there is a state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, and the type of the cell configuration information is the cell release configuration signaling, then the on-demand synchronization signal block of the second cell is determined to be in a deactivated state. On the contrary, if there is a state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, and the type of the cell configuration information is not the cell release configuration signaling, then the on-demand synchronization signal block of the second cell can be determined to be in an activated state. In addition, if there is no state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, then the on-demand synchronization signal block of the second cell can also be determined to be in a deactivated state. It can be understood that by adding the dimension of the type of cell configuration information to judge the activation state of the on-demand synchronization signal block, the flexibility of the activation state judgment can be improved, thereby improving the versatility of the application of the relevant schemes for the synchronization signal block.

[0247] Accordingly, a description of the judgment logic flow of the user equipment may be added to the part related to the user equipment in the 3GPP protocol, which may be specifically as follows:

[0248]

[0249] The above content is that the on-demand SSB is deactivated by default when the SCell is released, that is, when the UE receives the SCell release list, it releases the on-demand SSB configuration information of the SCell while releasing the SCell in the list.

[0250] Reference Figure 6 , Figure 6 This is a flow chart of the fourth embodiment of the communication method in the present application. In the embodiment of the present application, the communication method is applied to a user equipment, and the communication method includes steps S101 to S102:

[0251] Step S101, receiving cell configuration information of a second cell sent by a first cell;

[0252] Step S102: If the cell configuration information contains the status configuration of the second cell, it is determined that the second cell has been activated and the on-demand synchronization signal block corresponding to the second cell has been activated.

[0253] It should be noted that, in this embodiment, the user equipment may also directly determine the state of the on-demand synchronization signal block according to the existing interaction content between the user equipment and the first cell.

[0254] Exemplarily, after the user equipment receives the cell configuration information of the second cell sent by the first cell, the user equipment can determine whether there is a status configuration of the second cell in the cell configuration information, and in the case where there is a status configuration of the second cell, determine that the second cell is activated and the on-demand synchronization signal block corresponding to the second cell is activated. This is equivalent to, in this embodiment, assuming that the activation state of the second cell is synchronized with the activation state of the on-demand synchronization signal block of the second cell, that is, when it is determined that the second cell is in the activation state, it is also determined that the on-demand synchronization signal block of the second cell is activated. It can be understood that in this example, the content in the current 3GPP protocol will be utilized as much as possible to reduce modifications to the current 3GPP protocol.

[0255] In addition, the embodiment of the present application also proposes a communication device, the communication device comprising: a processor, a memory, and a communication program stored in the memory and executable on the processor, wherein the communication program implements the steps of the communication method described above when executed.

[0256] In addition, an embodiment of the present application further proposes a storage medium, on which a communication program is stored, and when the communication program is executed by a processor, the steps of the communication method described above are implemented.

[0257] In addition, an embodiment of the present application further proposes a computer program product, which includes a communication program, and when the communication program is executed by a processor, the steps of the communication method described above are implemented.

[0258] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present application. In specific applications, technicians in this field can make settings as needed, and the present application does not impose any limitation on this.

[0259] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present application. In practical applications, technicians in this field can select part or all of it according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0260] In addition, for technical details not described in detail in this embodiment, please refer to the communication method provided in any embodiment of the present application, and will not be repeated here.

[0261] In addition, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including 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 system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0262] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0263] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0264] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A communication method, characterized in that: The communication method is applied to a first cell, and the communication method includes: Sending cell configuration information of the second cell to the user equipment, where the cell configuration information includes configuration information of an on-demand synchronization signal block of the second cell, where the configuration information of the on-demand synchronization signal block includes at least one of the following: The configuration information index of the on-demand synchronization signal block; Status configuration information of the on-demand synchronization signal block; Time domain resource configuration information of the on-demand synchronization signal block; Transmission configuration information of the on-demand synchronization signal block; Frequency domain resource configuration information of the on-demand synchronization signal block; The measurement configuration information of the on-demand synchronization signal block.

2. The communication method according to claim 1, characterized in that: The configuration information index is used to indicate that the user equipment uses the configuration information of the on-demand synchronization signal block.

3. The communication method according to claim 2, characterized in that: The user equipment stores the configuration information index and the configuration information corresponding to the configuration information index, or stores multiple groups of configuration information indexes and multiple groups of configuration information corresponding to the multiple groups of configuration information indexes.

4. The communication method according to claim 2, characterized in that: The configuration information index is carried by a radio resource control information element, and the configuration information index includes a parameter name and a parameter value, and the parameter value is a shaping element.

5. The communication method according to claim 4, characterized in that: The upper threshold of the parameter value is constrained by multiplicity and type constraint definitions, and the upper threshold is 16, 32 or 64.

6. The communication method according to claim 1, wherein: The status configuration information is used to characterize the activation and deactivation status of the on-demand synchronization signal block, wherein if the value of the status configuration information is a first preset value, it characterizes the activation of the on-demand synchronization signal block; if the value of the status configuration information is a second preset value, it characterizes the deactivation of the on-demand synchronization signal block.

7. The communication method according to claim 1, characterized in that: The time domain resource configuration information includes at least one of the following: a transmission period of the on-demand synchronization signal block; The activation beam position configuration of the on-demand synchronization signal block; The transmission time offset between the on-demand synchronization signal block and the normal synchronization signal block of the second cell.

8. The communication method according to claim 1, wherein: The transmission configuration information includes: Time domain position information of the start of transmission of the on-demand synchronization signal block; The time domain position information of the end transmission of the on-demand synchronization signal block; The number of transmissions of the on-demand sync signal block.

9. The communication method according to claim 8, characterized in that: The time domain position information at which the on-demand synchronization signal block starts to be transmitted is one of the following: The time interval from when the user equipment receives the configuration information to when the second cell starts sending the on-demand synchronization signal block; The time interval from when the user equipment prepares to send confirmation information to when the second cell starts to send the on-demand synchronization signal block, the confirmation information being hybrid automatic repeat request confirmation information after the user equipment receives the configuration information; The time interval from when the user equipment receives the configuration information to when the second cell starts to send the first transmission time slot position of the on-demand synchronization signal block; The second cell sends a reference time slot position of the on-demand synchronization signal block.

10. The communication method according to claim 9, characterized in that: The time domain position information of the end transmission of the on-demand synchronization signal block is one of the following: The time interval from when the second cell starts sending the on-demand synchronization signal block to when it stops sending the on-demand synchronization signal block; The time interval from when the user equipment receives the configuration information to when the second cell stops sending the on-demand synchronization signal block; The time interval from when the user equipment prepares to send the confirmation information to when the second cell finishes sending the on-demand synchronization signal block; A time interval from the user equipment sending the measurement result to the second cell finishing sending the on-demand synchronization signal block; The second cell ends sending the time slot position of the on-demand synchronization signal block.

11. The communication method according to claim 1, characterized in that: The frequency domain resource configuration information includes at least one of the following: The subcarrier spacing of the on-demand synchronization signal block; the absolute frequency position of the on-demand synchronization signal block; A list of frequency bands to which the on-demand synchronization signal blocks belong; The absolute frequency point A position of the reference resource block; A list of special carriers of said subcarrier spacing; The reference cell of the on-demand synchronization signal block.

12. The communication method according to claim 1, wherein: The measurement configuration information includes at least one of a measurement time domain period, a measurement offset, and a measurement duration.

13. The communication method according to claim 1, wherein: When the measurement configuration information is empty, historical measurement configuration information is used as the measurement configuration information.

14. The communication method according to claim 1, characterized in that: The location of the configuration information of the on-demand synchronization signal block in the cell configuration information is one of the following: The cell group configuration level in the cell configuration information; A secondary cell configuration level in the cell configuration information; The cell general configuration level in the cell configuration information; The directional downlink bandwidth unit configuration level in the cell configuration information.

15. A communication method, characterized in that: Applied to a first cell, the communication method includes: The cell configuration information of the second cell is sent to the user equipment, where the cell configuration information includes the state configuration of the on-demand synchronization signal block corresponding to the second cell.

16. The communication method according to claim 15, characterized in that: The status configuration of the on-demand synchronization signal block is located in the configuration information of the on-demand synchronization signal block, or is located in the cell configuration information in parallel with the configuration information.

17. A communication method, characterized in that: Applied to user equipment, the communication method includes: receiving cell configuration information of a second cell sent by the first cell; Based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, the activation state of the on-demand synchronization signal block of the second cell is determined.

18. The communication method according to claim 17, characterized in that: The determining, based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information, the activation state of the on-demand synchronization signal block of the second cell includes: If the cell configuration information contains a status configuration of the on-demand synchronization signal block corresponding to the second cell, it is determined that the on-demand synchronization signal block of the second cell has been activated.

19. The communication method according to claim 17, characterized in that: The step of determining the activation state of the on-demand synchronization signal block of the second cell based on the existence of the state configuration of the on-demand synchronization signal block corresponding to the second cell in the cell configuration information further includes: If the cell configuration information contains a status configuration of the on-demand synchronization signal block corresponding to the second cell, and the cell configuration information is a cell release configuration signaling, it is determined that the on-demand synchronization signal block of the second cell is deactivated.

20. A communication method, characterized in that: Applied to user equipment, the communication method includes: receiving cell configuration information of a second cell sent by the first cell; If the status configuration of the second cell exists in the cell configuration information, it is determined that the second cell has been activated and the on-demand synchronization signal block corresponding to the second cell has been activated.

21. A communication device, characterized in that: The communication device comprises: a processor, a memory, and a communication program stored in the memory and executable on the processor, wherein the communication program implements the steps of the communication method according to any one of claims 1 to 19 when executed.

22. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a communication program, and when the communication program is executed, the steps of the communication method according to any one of claims 1 to 19 are implemented.

23. A computer program product, characterized in that The computer program product comprises a communication program, and when the communication program is executed by a processor, the steps of the communication method according to any one of claims 1 to 19 are implemented.

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