Secondary cell activation method, and user equipment

Abstract

The present disclosure relates to the field of wireless communications, and particularly relates to a secondary cell activation method, a user equipment, a computer-readable storage medium, and a computer program product. The secondary cell activation method is executed by a user equipment, and comprises: sending an early measurement report and / or a cell re-selection measurement report; receiving secondary cell activation signaling; and within a first latency after receiving the secondary cell activation signaling, transmitting a channel state information report.

Description

Secondary cell activation method and user equipment

[0001] Related applications

[0002] This application claims priority to Chinese patent application filed on November 7, 2024, application number 2024115862828, entitled “Method for Activating Secondary Cell and User Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of wireless communications, and in particular to secondary cell activation methods, user equipment and computer-readable storage media, and computer program products. Background Technology

[0004] With the development of mobile networks, the demand for data traffic in communication systems is increasing day by day. The bandwidth of a single frequency band or a single carrier is limited, resulting in limited capacity, which makes it difficult to meet the needs of communication services.

[0005] Among related technologies, carrier aggregation (CA) technology allows multiple carriers or frequency bands to be combined into a wider frequency band for data transmission, thereby improving network capacity. The use of carrier aggregation enhances the flexibility of frequency band usage, facilitating the coordinated deployment of high, medium, and low frequency bands and improving network coverage and capacity.

[0006] However, carrier aggregation involves secondary cell activation procedures. For example, the activation procedure for unknown secondary cells includes automatic gain control (AGC) adjustment, cell detection, Layer 1 Reference Signal Received Power (L1-RSRP) measurement and reporting, transmission configuration indication activation, fine time tracking, etc., which involves many procedures and results in a long delay in secondary cell activation. Summary of the Invention

[0007] According to one aspect of this disclosure, a secondary cell activation method is proposed, executed by a user equipment, comprising: sending an early measurement report and / or a cell reselection measurement report; receiving a secondary cell activation signaling; and transmitting a channel state information report within a first time delay after receiving the secondary cell activation signaling.

[0008] In some embodiments, the capabilities of the user equipment include at least one of the following: the user equipment's ability to support early measurement reports; the user equipment's ability to support early measurement reports for secondary cell activation; the user equipment's ability to support cell reselection measurement reports; and the user equipment's ability to support cell reselection measurement reports for secondary cell activation.

[0009] In some embodiments, the early measurement report and / or cell reselection measurement report is valid if at least one of the following conditions is met: the user equipment determines that the early measurement report and / or cell reselection measurement report is valid through validity verification; the user equipment receives indication information indicating that the early measurement report and / or cell reselection measurement report is valid; the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling.

[0010] In some embodiments, the secondary cell is a secondary cell in frequency range one, and the secondary cell activation condition satisfies at least one of the following: the user equipment sends the early measurement report and / or cell reselection measurement report within a third delay before receiving the secondary cell activation signaling; the synchronization signal and physical broadcast channel block (SSB) measured within the third delay are still detectable during the secondary cell activation period; the SSB measured within the measurement period of the early measurement report is still detectable during the secondary cell activation period; and the SSB measured within the cell reselection measurement period is still detectable during the secondary cell activation period.

[0011] In some embodiments, if the condition for the early measurement report and / or cell reselection measurement report to be valid is that the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling, the third delay is less than or equal to the second delay.

[0012] In some embodiments, the secondary cell is a secondary cell in frequency range two, and the secondary cell activation condition satisfies at least one of the following: the user equipment sends the early measurement report and / or cell reselection measurement report within a fourth delay before receiving the most recent activation signaling of the Transmission Configuration Indication (TCI) or Channel Quality Indication (CQI) report; the synchronization signal and physical broadcast channel block (SSB) measured within the fourth delay are still detectable during the secondary cell activation period; the SSB measured within the measurement period of the early measurement report are still detectable during the secondary cell activation period; and the SSB measured within the cell reselection measurement period are still detectable during the secondary cell activation period.

[0013] In some embodiments, if the condition for the early measurement report and / or cell reselection measurement report to be valid is that the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling, the fourth delay is less than or equal to the second delay.

[0014] In some embodiments, the capabilities supported by the user equipment are applied to frequency range one FR1 band and / or frequency range two FR2 band.

[0015] In some embodiments, the capabilities supported by the user equipment are applied to frequency division duplex (FDD) bands and / or time division duplex (TDD) bands.

[0016] In some embodiments, the granularity of the capabilities supported by the user equipment includes at least one of the following: per user equipment, per frequency band, per combination of frequency bands, per feature set, per feature set per component carrier, or per field description.

[0017] In some embodiments, the user equipment sends the early measurement report and / or cell reselection measurement report within a fifth time delay after receiving the secondary cell activation signaling.

[0018] In some embodiments, the fifth delay includes at least one of the following: delay for preparing an early measurement report and / or a cell reselection measurement report, delay for validating the validity of an early measurement report and / or a cell reselection measurement report, and delay for waiting for uplink resources.

[0019] In some embodiments, the secondary cell is a secondary cell with a frequency range of one, and the first delay includes at least one of the following: the time at which the first complete Synchronization Signal and Physical Broadcast Channel Block (SSB) burst set ends, as indicated by the Synchronization Signal and Physical Broadcast Channel Block Measurement Time Configuration (SMTC), or is set to be less than or equal to a first time constant when no SMTC is configured; the SMTC period of the secondary cell or the configured SMTC period; a second time constant; the time at which the first complete periodic Channel State Information Reference Signal (CSI-RS) burst set for secondary cell activation ends; the period of the periodic CSI-RS burst set for secondary cell activation; the time at which the first complete CSI-RS burst set for secondary cell activation ends, wherein the CSI-RS burst set is four CSI-RS resources in two consecutive time slots; the CSI-RS burst set for secondary cell activation, wherein the CSI-RS burst set is defined as four CSI-RS resources in two consecutive time slots; and the gap length between two aperiodic CSI-RS burst sets.

[0020] In some embodiments, the secondary cell is a secondary cell in frequency range one, and the first delay does not include at least one of the following: the larger of the synchronization signal and physical broadcast channel block measurement time configuration (SMTC) period of the active serving cell and the SMTC period of the activated secondary cell; the layer-1 reference signal received power measurement delay; the delay of reporting the layer-1 reference signal received power measurement result or the delay of acquiring CSI report resources; the delay between downlink data transmission and acknowledgment; the time interval from the last activation signaling of the transmission configuration indication (TCI) of the physical downlink control channel (PDCCH) and / or the transmission configuration indication (TCI) of the physical downlink shared channel (PDSCH) to the first fully available SSB corresponding to the TCI state; receiving the PDCCH TCI and / or PDSCH. The time interval between the last activation signaling of the TCI and the activation signaling of the known secondary cell or the first valid Layer 1 Reference Signal Received Power Report of the unknown secondary cell; the time interval between receiving the Radio Resource Control (RRC) configuration message of the TCI for the periodic CSI-RS for Channel Quality Indication (CQI) reporting and the activation signaling of the known secondary cell or the first valid Layer 1 Reference Signal Received Power Report of the unknown secondary cell; the time interval between receiving the activation signaling of the semi-persistent CSI-RS resource set for CQI reporting and the activation signaling of the known secondary cell or the first valid Layer 1 Reference Signal Received Power Report of the unknown secondary cell; and the RRC procedure delay.

[0021] In some embodiments, the secondary cell is a secondary cell in frequency range two, and the first delay includes at least one of the following: the time interval from when the user equipment completes processing the last activation signaling of the Transmission Configuration Indication (TCI) of the Physical Downlink Control Channel (PDCCH) and / or the Transmission Configuration Indication (TCI) of the Physical Downlink Shared Channel (PDSCH) to the first fully available SSB corresponding to the TCI state; the time interval between receiving the last activation signaling of the PDCCH TCI and / or the PDSCH TCI relative to the activation signaling of the secondary cell or the first valid Layer 1 Reference Signal Received Power Report (LSRS) of an unknown secondary cell; the time interval between receiving the Radio Resource Control (RRC) configuration message of the TCI of the Periodic Channel State Information Reference Signal (CSI-RS) for Channel Quality Indication (CQI) reporting relative to the activation signaling of the secondary cell or the first valid LSRS LSRS LSRS report of an unknown secondary cell; the time interval between receiving the activation signaling of the semi-persistent CSI-RS resource set for CQI reporting relative to the activation signaling of the secondary cell or the first valid LSRS LSRS LSRS report of an unknown secondary cell; the RRC procedure delay; and a third time constant.

[0022] In some embodiments, the secondary cell is a secondary cell in frequency range two, and the first delay further includes at least one of the following: the time at which the first complete Synchronization Signal and Physical Broadcast Channel Block (SSB) burst set ends, as indicated by the Synchronization Signal and Physical Broadcast Channel Block Measurement Time Configuration (SMTC), or, if no SMTC is configured, a time constant less than or equal to a fourth time constant; the larger of the SMTC period of the active serving cell and the SMTC period of the secondary cell; or the SMTC period of the secondary cell or the configured SMTC period.

[0023] In some embodiments, the secondary cell is a secondary cell in frequency range two, and the first delay does not include at least one of the following: Layer 1 reference signal received power measurement delay; delay in reporting the Layer 1 reference signal received power measurement result or delay in obtaining CSI report resources.

[0024] In some embodiments, the third delay is determined based on the maximum value of the secondary cell measurement period and the discontinuous reception period.

[0025] In some embodiments, the fourth delay is determined based on the power level supported by the user equipment.

[0026] According to another aspect of this disclosure, a user equipment is provided, comprising: a transmitting module configured to transmit an early measurement report and / or a cell reselection measurement report; a receiving module configured to receive a secondary cell activation signaling; and a transmitting module configured to transmit a channel state information report within a first time delay after receiving the secondary cell activation signaling.

[0027] According to another aspect of this disclosure, a user equipment is provided, comprising: a memory; and a processor coupled to the memory, the processor being configured to perform a secondary cell activation method as described in any of the preceding claims based on instructions stored in the memory.

[0028] According to another aspect of this disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement the secondary cell activation method as described in any of the preceding claims.

[0029] According to another aspect of this disclosure, a computer program product is provided, wherein the computer program product stores computer instructions that, when executed by a processor, implement the secondary cell activation method as described in any of the preceding claims.

[0030] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0032] Figure 1 is a flowchart illustrating secondary cell activation in related technologies;

[0033] Figure 2 is a flowchart illustrating a secondary cell activation method according to some embodiments of the present disclosure;

[0034] Figure 3 is a block diagram illustrating a user equipment according to some embodiments of the present disclosure;

[0035] Figure 4 is a block diagram illustrating a user equipment according to some other embodiments of the present disclosure;

[0036] Figure 5 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure. Detailed Implementation

[0037] Various embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the embodiments are merely illustrative and are in no way intended to limit the scope of the disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps set forth in these embodiments should be interpreted as merely illustrative and not as limiting.

[0038] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as “including” mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility of covering other elements as well.

[0039] It should also be understood that in the embodiments disclosed herein, "a plurality of" may refer to two or more, and "at least one" may refer to one, two or more.

[0040] Furthermore, the term "and / or" in this disclosure is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this disclosure generally indicates that the preceding and following related objects have an "or" relationship.

[0041] It should also be understood that any component, data or structure mentioned in the embodiments of this disclosure can generally be understood as one or more unless expressly defined or given to the contrary in the context.

[0042] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0043] The embodiments disclosed herein can be applied to electronic devices such as terminal devices, computer systems, and servers, and can operate together with a wide range of other general-purpose or special-purpose computing system environments or configurations. Examples of well-known terminal devices, computing systems, environments, and / or configurations suitable for use with electronic devices such as terminal devices, computer systems, and servers include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputer systems, mainframe computer systems, and distributed cloud computing environments including any of the above systems, etc.

[0044] The technical solutions of the various embodiments of this application can be applied to various communication systems according to the access standard, such as: 5th generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc.

[0045] User equipment (UE), also known as terminal equipment or terminal, is a device with wireless transceiver capabilities that can communicate with one or more core networks (CNs) via access network devices in a radio access network (RAN). It can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; on water, such as on ships; and in the air, such as on airplanes, balloons, or satellites. Terminal equipment can be mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, self-driving, remote medical, smart grid, transportation safety, smart city, and smart home applications, among others.

[0046] Access network equipment may include: next-generation node basestations (gNBs) in 5G systems, evolved node Bs (eNBs) in long term evolution (LTE), radio network controllers (RNCs), node Bs (NBs), base station controllers (BSCs), base transceiver stations (BTSs), home base stations (e.g., home evolved node Bs or home node Bs (HNBs), base band units (BBUs), transmitting and receiving points (TRPs), transmitting points (TPs), small cell equipment (picos), mobile switching centers, or network equipment in future networks, etc.

[0047] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0048] Traditional methods for activating secondary cells suffer from numerous activation steps and long latency.

[0049] First, an exemplary process for secondary cell activation in carrier aggregation-related technologies will be introduced with reference to Figure 1. Figure 1 is a flowchart illustrating secondary cell activation in related technologies.

[0050] As shown in Figure 1, in the related technologies, the process of activating a secondary cell includes steps S11 to S14.

[0051] In step S11, the user equipment performs initial access in the primary cell of the network device, and the network device configures a secondary cell for the user equipment.

[0052] In a carrier aggregation configuration, a cell consists of a primary cell and a secondary cell. The primary cell operates on the primary frequency, handles signaling transmission, and manages other cells. The secondary cell operates on a secondary frequency. Within this secondary cell, a radio resource control (RRC) connection is established through the primary cell configuration to provide additional radio resources, such as increased bandwidth and higher data rates.

[0053] The primary cell of a network device can configure a secondary cell for user equipment via RRC signaling.

[0054] In step S12, the network device decides to activate the secondary cell and sends a secondary cell activation signaling message to the user equipment.

[0055] Network devices can send secondary cell activation signaling to user equipment via media access control-control element (MAC-CE) signaling.

[0056] In step S13, the user equipment performs time-frequency synchronization in the secondary cell.

[0057] User equipment, for example, detects the SSB signal of the secondary cell based on the synchronization signal and physical broadcast channel block (SSB) measurement configuration included in the RRC signaling used for secondary cell configuration, thereby achieving time-frequency synchronization of the secondary cell.

[0058] Specifically, the time-frequency synchronization process includes automatic gain control (AGC) adjustment, cell detection, Layer 1 reference signal received power (L1-RSRP) measurement and reporting, transmission configuration indication activation, fine time tracking, etc., which are executed by the user equipment after receiving the secondary cell activation signaling.

[0059] In step S14, the user equipment measures the channel state information (CSI) of the secondary cell and sends a CSI report to the network equipment.

[0060] The secondary cell activation method described above requires a time-frequency synchronization process in step S13 when activating an unknown secondary cell, resulting in a long activation delay for the secondary cell.

[0061] In view of this, this disclosure proposes a secondary cell activation method that can reduce the latency of secondary cell activation.

[0062] The secondary cell activation method performed by a user equipment in this disclosure will now be described with reference to FIG2. FIG2 is a flowchart illustrating a secondary cell activation method according to some embodiments of this disclosure.

[0063] As shown in Figure 2, the secondary cell activation method includes: step S21, sending an early measurement report and / or a cell reselection measurement report; step S22, receiving a secondary cell activation signaling; and step S23, transmitting a channel state information report within a first time delay after receiving the secondary cell activation signaling.

[0064] Early measurement reports are typically sent during the transition of user equipment from idle or inactive to connected states; cell reselection measurement reports are typically sent by user equipment while in idle states, for example periodically, by measuring and sending the signal quality of neighboring and current cells.

[0065] By sending early measurement reports and / or cell reselection measurement reports, unknown secondary cells can be regarded as known secondary cells, avoiding the need to perform time and frequency synchronization steps such as AGC adjustment, cell detection, L1-RSRP measurement and reporting, thereby shortening the activation process and reducing the latency of secondary cell activation.

[0066] Among them, an unknown secondary cell refers to a secondary cell for which the user equipment has not performed measurement or other procedures, and the user equipment has not achieved time-frequency synchronization with the secondary cell.

[0067] A known secondary cell refers to a cell for which the user equipment has performed measurements and sent a valid measurement report, and which has achieved time-frequency synchronization with the secondary cell.

[0068] In related technologies, as shown in Figure 1 above, user equipment typically achieves time-frequency synchronization with the secondary cell after receiving activation signaling. For example, it achieves time-frequency synchronization with the secondary cell by sending a Layer 3 Reference Signal Received Power (L3-RSRP) measurement report in the connected state, so that the secondary cell can be considered a known secondary cell.

[0069] Unlike related technologies, in the secondary cell activation method disclosed herein, the user equipment (UE) achieves time-frequency synchronization with the secondary cell by sending early measurement reports and / or cell reselection measurement reports. The early measurement reports and / or cell reselection measurement reports are obtained based on measurements performed by the UE in idle or inactive states, and are, for example, periodic measurement reports. In other words, the early measurement reports and / or cell reselection measurement reports are typically existing measurement reports of the UE, which can be directly used during the secondary cell activation process without requiring remeasurement, thereby shortening the activation process and reducing the latency of secondary cell activation.

[0070] In step S21, an early measurement report and / or a cell reselection measurement report are sent.

[0071] Specifically, the user equipment can send the aforementioned early measurement report and / or cell reselection measurement report to the network equipment, thereby using the aforementioned reports during the secondary cell activation process.

[0072] Understandably, in the above embodiments, when the user equipment sends an early measurement report, the user equipment needs to support the ability to send early measurement reports and / or the ability to use early measurement reports for secondary cell activation.

[0073] Similarly, when a user equipment sends a cell reselection measurement report, the user equipment needs to support the ability to send cell reselection measurement reports and / or the ability to use cell reselection measurement reports for secondary cell activation.

[0074] For example, the user equipment reports its capabilities to the network device when establishing a connection with the primary cell. After the network device learns that the user equipment has the above capabilities, it can determine that the user equipment can execute the secondary cell activation method according to the embodiments of this disclosure, thereby reducing the latency of secondary cell activation.

[0075] Furthermore, secondary cells are divided into secondary cells in frequency range one (FR1) and secondary cells in frequency range two (FR2). The frequency range of the FR1 band is 410MHz-7125MHz. The FR2 band includes FR2-1 and FR2-2. The frequency range of the FR2-1 band is 24250MHz-52600MHz, and the frequency range of the FR2-2 band is 52600MHz-71000MHz.

[0076] Common frequency band combinations in frequency range one (or first frequency range) include 2.1G+1.8G CA, 900M+800M CA, etc., while common frequency band combinations in frequency range two (or second frequency range) include 26G+28G CA, 26G+39G CA, etc.

[0077] In some embodiments, depending on the type of secondary cell to be activated, the capabilities supported by the user equipment are also correspondingly applied to the frequency range one (FR1) band and / or the frequency range two (FR2) band.

[0078] Additionally, secondary cells can be divided into Frequency Division Duplex (FDD) secondary cells and / or Time Division Duplex (TDD) secondary cells. In an FDD secondary cell, reception and transmission occur on two separate symmetrical frequency channels, with a guaranteed frequency band used to separate the reception and transmission channels. In a TDD secondary cell, reception and transmission occur on the same frequency channel, i.e., different time slots of the carrier, with a guaranteed time used to separate the reception and transmission channels.

[0079] In other embodiments, depending on the type of secondary cell to be activated, the capabilities supported by the user equipment are also correspondingly applied to the frequency division duplex (FDD) band and / or time division duplex (TDD) band.

[0080] In the above embodiments, the granularity of the capabilities supported by the user equipment may include at least one of the following: per user equipment, per frequency band, per frequency band combination, per feature set, per feature set per component carrier, or per field description.

[0081] For example, when the granularity of the capabilities supported by the user equipment is per frequency band, the frequency range of the secondary cell is divided into multiple frequency bands. The user equipment can support the capability of early measurement reporting and / or the capability of early measurement reporting for secondary cell activation and / or the capability of cell reselection measurement reporting and / or the capability of cell reselection measurement reporting for secondary cell activation in one or more of these frequency bands, while not supporting the above capabilities in other frequency bands.

[0082] The above text describes the capabilities supported by the user equipment, as well as the specific applications and granularity of these capabilities. Through these capabilities, the user equipment can send early measurement reports and / or cell reselection measurement reports and use them for secondary cell activation, thereby reducing the latency of secondary cell activation.

[0083] Below, we will continue to describe the conditions under which the early measurement report and / or cell reselection measurement report are valid in step S21 in some embodiments.

[0084] In some embodiments, the early measurement report and / or cell reselection measurement report is valid if at least one of the following conditions is met: the user equipment determines that the early measurement report and / or cell reselection measurement report is valid through validity verification; the user equipment receives indication information indicating that the early measurement report and / or cell reselection measurement report is valid; the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling.

[0085] Valid early measurement reports and / or cell reselection measurement reports need to meet at least one of the three conditions mentioned above.

[0086] Specifically, in the first condition, the user equipment determines that the early measurement report and / or cell reselection measurement report are valid through validity verification.

[0087] For example, during 5G random access, if a user equipment transmits a report of measurements performed within a certain period before transmitting an RRC recovery / setup request, and the measurement results meet the measurement accuracy requirements of the Measurement Occasion (MO), then the early measurement report and / or cell reselection measurement report are deemed valid.

[0088] In the second condition, the user equipment receives an indication that the early measurement report and / or cell reselection measurement report are valid.

[0089] For example, a user equipment (UE) can receive indication information sent by a network device, which indicates that an early measurement report and / or a cell reselection measurement report is valid. If the UE does not receive the indication information from the network device, the early measurement report and / or cell reselection measurement report is invalid and cannot be used for secondary cell activation.

[0090] In the third condition, if the user equipment sends an early measurement report and / or a cell reselection measurement report within the second time delay before receiving the secondary cell activation signaling, then the early measurement report and / or cell reselection measurement report are valid.

[0091] For example, a user equipment (UE) can determine the validity of its early measurement reports and / or cell reselection measurement reports based on the time it receives the secondary cell activation signaling. To ensure the timeliness of the measurement reports, the time interval between the UE sending the early measurement report and / or cell reselection measurement report and receiving the secondary cell activation signaling must be less than the second delay. Early measurement reports and / or cell reselection measurement reports with excessively long time intervals are invalid and cannot be used for secondary cell activation. The second delay is typically 3 seconds, 4 seconds, 5 seconds, 10 seconds, or other durations.

[0092] By fulfilling the above conditions, user equipment can ensure the validity of early measurement reports and / or cell reselection measurement reports, thereby improving the success rate of secondary cell activation.

[0093] Returning to Figure 2, let's continue with the secondary cell activation method proposed in this disclosure. Furthermore, in order to consider an unknown secondary cell as a known secondary cell, certain conditions need to be met. The following will focus on the conditions under which a secondary cell is a known secondary cell in some embodiments of this disclosure. In some embodiments, the conditions described below refer to the secondary cell activation conditions.

[0094] In the first scenario, the secondary cell is a secondary cell with a frequency range of one, and the secondary cell activation condition satisfies at least one of the following: the user equipment sends the early measurement report and / or cell reselection measurement report within a third time delay before receiving the secondary cell activation signaling; the synchronization signal and physical broadcast channel block (SSB) measured within the third time delay are still detectable during the secondary cell activation period; the SSB measured within the measurement period of the early measurement report is still detectable during the secondary cell activation period; and the SSB measured within the cell reselection measurement period is still detectable during the secondary cell activation period.

[0095] The above conditions include the conditions for user equipment to send early measurement reports and / or cell reselection measurement reports, as well as the conditions for user equipment measurement. These two types of conditions will be described separately below.

[0096] On the one hand, the user equipment can send an early measurement report and / or a cell reselection measurement report within the third time delay before receiving the secondary cell activation signaling. Through the above measurements and reports, it can complete the time and frequency synchronization with the secondary cell, thereby determining that the secondary cell is a known secondary cell.

[0097] As mentioned above, one of the conditions for the validity of the early measurement report and / or cell reselection measurement report is that the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling. In the above case, a third delay can be set to be less than or equal to the second delay, thereby ensuring that the early measurement report and / or cell reselection measurement report remain valid during the secondary cell activation process.

[0098] In some embodiments, the third delay may be determined based on the larger of the secondary cell measurement period and the discontinuous reception period, for example, the third delay may be max(5*measCycleSCell, 5*DRX cycles), where measCycleSCell is the secondary cell measurement period and DRX cycles are the discontinuous reception period. Alternatively, the third delay may take the same value as the second delay, such as 3 seconds, 4 seconds, 5 seconds, 10 seconds, or other times.

[0099] On the other hand, the synchronization signal and physical broadcast channel block (SSB) that can be measured by user equipment are still detectable during the activation period, which can be used to determine whether the secondary cell is a known secondary cell.

[0100] Specifically, SSBs measured within the third delay, or within the measurement period of the early measurement report, or within the cell reselection measurement period, which are still detectable during secondary cell activation, can be used for secondary cell activation, so that no additional time-frequency synchronization process is required between the user equipment and the secondary cell, thereby reducing the latency of secondary cell activation.

[0101] In the second scenario, the secondary cell is a secondary cell in frequency range two, and the secondary cell activation condition satisfies at least one of the following: the user equipment sends the early measurement report and / or cell reselection measurement report within a fourth delay before receiving the most recent activation signaling of the Transmission Configuration Indication (TCI) or Channel Quality Indication (CQI) report; the synchronization signal and physical broadcast channel block (SSB) measured within the fourth delay are still detectable during the secondary cell activation period; the SSB measured within the measurement period of the early measurement report is still detectable during the secondary cell activation period; and the SSB measured within the cell reselection measurement period is still detectable during the secondary cell activation period.

[0102] The difference between secondary cells in frequency range two and those in frequency range one is that, because frequency range two is higher than frequency range one, user equipment (UE) needs to perform transmit / receive beam scanning based on the Transmission Configuration Indicator (TCI) to select appropriate transmit / receive beam pairs for time-frequency synchronization and send a Channel Quality Indicator (CQI) report during time-frequency synchronization. Therefore, the activation process of secondary cells in frequency range two will take the above procedures into account.

[0103] Similar to cells in frequency range one, the above conditions include conditions for user equipment to send early measurement reports and / or cell reselection measurement reports, as well as conditions for user equipment measurements. These two types of conditions will be described separately below.

[0104] On the one hand, the user equipment can send an early measurement report and / or a cell reselection measurement report within the fourth delay before receiving the most recent secondary cell activation signaling before receiving the Transmission Configuration Indication (TCI) or Channel Quality Indication (CQI) report. Through the above measurements and reports, time-frequency synchronization with the secondary cell is completed, thereby determining that the secondary cell is a known secondary cell.

[0105] As mentioned above, one of the conditions for the early measurement report and / or cell reselection measurement report to be valid is that the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling. In the above case, the fourth delay can be set to be less than or equal to the second delay, thereby ensuring that the early measurement report and / or cell reselection measurement report remain valid during the secondary cell activation process.

[0106] In some embodiments, the fourth delay may also be determined based on the power level supported by the user equipment. For example, the fourth delay corresponding to user equipment supporting power level 1 or 5 may be set to 4 seconds, and the fourth delay corresponding to user equipment supporting power level 2, 3 or 4 may be set to 3 seconds.

[0107] On the other hand, the SSB, which can be measured by the user equipment, is still detectable during activation, thus determining whether the secondary cell is a known secondary cell.

[0108] Specifically, SSBs measured within the fourth delay, or within the measurement period of the early measurement report, or within the cell reselection measurement period, which are still detectable during secondary cell activation, can be used for secondary cell activation, so that no additional time-frequency synchronization process is required between the user equipment and the secondary cell, thereby reducing the latency of secondary cell activation.

[0109] The foregoing describes some embodiments of this disclosure in which a secondary cell can be identified as a known secondary cell by sending an early measurement report and / or a cell reselection measurement report within a certain period of time before the activation signaling.

[0110] In other embodiments, the user equipment may also send the early measurement report and / or cell reselection measurement report within a fifth delay after receiving the secondary cell activation signaling, thereby determining that the secondary cell is a known secondary cell.

[0111] Furthermore, the fifth delay includes at least one of the following: delay for preparing early measurement reports and / or cell reselection measurement reports, delay for validating early measurement reports and / or cell reselection measurement reports, and delay for waiting for uplink resources.

[0112] In other words, the fifth delay is, for example, the delay for user equipment to perform validity verification. Early measurement reports and / or cell reselection measurement reports sent within this delay can also be considered as measured before activation signaling, thereby being used for secondary cell activation, shortening the activation process, and reducing the delay of secondary cell activation.

[0113] In some embodiments, different delays may be set for secondary cell activation using early measurement reports and secondary cell activation using cell reselection measurement reports, including a first delay to a fifth delay, thereby improving the flexibility of secondary cell activation.

[0114] Next, let's return to the secondary cell activation method shown in Figure 2. In step S23, within the first delay after receiving the secondary cell activation signaling, a Channel State Information (CSI) report is transmitted.

[0115] The transmission of a valid Channel State Information (CSI) report by the user equipment (UE) marks the end of secondary cell activation, signifying its completion. If the network device does not receive the UE's CSI report within the first delay after issuing the secondary cell activation signaling, the secondary cell activation is deemed to have failed. This first delay can be configured in two ways.

[0116] In the first case, the secondary cell is a secondary cell with a frequency range of one.

[0117] For a secondary cell in frequency range one, in some embodiments, the first delay includes at least one of the following: the time at which the first complete Synchronization Signal and Physical Broadcast Channel Block (SSB) burst set ends, as indicated by the Synchronization Signal and Physical Broadcast Channel Block Measurement Time Configuration (SMTC), or, if no SMTC is configured, a time constant less than or equal to a first time constant; the SMTC period of the secondary cell or the configured SMTC period; a second time constant; the time at which the first complete periodic Channel State Information Reference Signal (CSI-RS) burst set for secondary cell activation ends; the period of the periodic CSI-RS burst set for secondary cell activation; the time at which the first complete CSI-RS burst set for secondary cell activation ends, wherein the CSI-RS burst set is four CSI-RS resources in two consecutive time slots; the CSI-RS burst set for secondary cell activation, wherein the CSI-RS burst set is defined as four CSI-RS resources in two consecutive time slots; and the gap length between two aperiodic CSI-RS burst sets.

[0118] For secondary cells in frequency range one, in some embodiments, the first delay does not include at least one of the following: the larger of the synchronization signal and physical broadcast channel block measurement time configuration (SMTC) period of the active serving cell and the SMTC period of the activated secondary cell; the layer 1 reference signal received power measurement delay; the delay of reporting the layer 1 reference signal received power measurement result or the delay of acquiring CSI report resources; the delay between downlink data transmission and acknowledgment; the time interval from the last activation signaling of the transmission configuration indication (TCI) of the physical downlink control channel (PDCCH) and / or the transmission configuration indication (TCI) of the physical downlink shared channel (PDSCH) to the first fully available SSB corresponding to the TCI state; receiving the PDCCH TCI and / or PDSCH. The time interval between the last activation signaling of the TCI and the activation signaling of the known secondary cell or the first valid Layer 1 Reference Signal Received Power Report of the unknown secondary cell; the time interval between receiving the Radio Resource Control (RRC) configuration message of the TCI for the periodic CSI-RS for Channel Quality Indication (CQI) reporting and the activation signaling of the known secondary cell or the first valid Layer 1 Reference Signal Received Power Report of the unknown secondary cell; the time interval between receiving the activation signaling of the semi-persistent CSI-RS resource set for CQI reporting and the activation signaling of the known secondary cell or the first valid Layer 1 Reference Signal Received Power Report of the unknown secondary cell; and the RRC procedure delay.

[0119] In the second case, the secondary cell is a secondary cell in frequency range two.

[0120] For secondary cells in frequency range two, in some embodiments, the first delay includes at least one of the following: the time interval from when the user equipment completes processing the last activation signaling of the Transmission Configuration Indication (TCI) of the Physical Downlink Control Channel (PDCCH) and / or the Transmission Configuration Indication (TCI) of the Physical Downlink Shared Channel (PDSCH) to the first fully available SSB corresponding to the TCI state; receiving the PDCCH TCI and / or PDSCH. The time interval between the last activation signaling of the TCI and the activation signaling of the secondary cell or the first valid Layer 1 Reference Signal Received Power Report of an unknown secondary cell; the time interval between the Radio Resource Control (RRC) configuration message for receiving the TCI of the periodic Channel State Information Reference Signal (CSI-RS) for Channel Quality Indication (CQI) reporting and the activation signaling of the secondary cell or the first valid Layer 1 Reference Signal Received Power Report of an unknown secondary cell; the time interval between the activation signaling of the semi-persistent CSI-RS resource set for CQI reporting and the activation signaling of the secondary cell or the first valid Layer 1 Reference Signal Received Power Report of an unknown secondary cell; the RRC procedure delay; a third time constant; the time at which the first complete Synchronization Signal and Physical Broadcast Channel Block (SSB) burst set indicated by the Synchronization Signal and Physical Broadcast Channel Block Measurement Time Configuration (SMTC) ends, or, if no SMTC is configured, a fourth time constant; the larger of the SMTC period of the active serving cell and the SMTC period of the secondary cell; the SMTC period of the secondary cell or the configured SMTC period.

[0121] For secondary cells in frequency range two, in some embodiments, the first delay does not include at least one of the following: the time at which the first complete Synchronization Signal and Physical Broadcast Channel Block (SSB) burst set ends, as indicated by the Synchronization Signal and Physical Broadcast Channel Block Measurement Time Configuration (SMTC), or, if no SMTC is configured, a time constant less than or equal to a fourth time constant; the larger of the SMTC period of the active serving cell and the SMTC period of the secondary cell; the SMTC period of the secondary cell or the configured SMTC period; the Layer 1 Reference Signal Received Power (LSS Received Power) measurement delay; the delay of reporting the LSS Received Power measurement results or the delay of obtaining CSI report resources.

[0122] For secondary cells in frequency range two, in some other embodiments, the first delay does not include at least one of the following: Layer 1 reference signal received power measurement delay; delay in reporting Layer 1 reference signal received power measurement results or delay in obtaining CSI report resources.

[0123] The first and second time constants mentioned above usually correspond to a frequency range. For example, the first time constant is 5 milliseconds and the second time constant is 5 milliseconds.

[0124] The aforementioned third and fourth time constants usually correspond to frequency range two. For example, the third time constant is 2 milliseconds, 3 milliseconds, and 5 milliseconds, and the fourth time constant is 5 milliseconds.

[0125] The secondary cell activation method proposed in this disclosure has been described above with reference to Figure 2. This method, by sending early measurement reports and / or cell reselection measurement reports, can treat unknown secondary cells as known secondary cells, thus avoiding time-frequency synchronization steps such as AGC adjustment, cell detection, L1-RSRP measurement and reporting, thereby shortening the activation process and reducing the latency of secondary cell activation. The user equipment proposed in this disclosure will now be described with reference to Figures 3 and 4. This user equipment can be used to execute the secondary cell activation method described above.

[0126] Figure 3 is a block diagram illustrating a user equipment according to some embodiments of the present disclosure. As shown in Figure 3, the user equipment 3 includes a transmitting module 31 configured to transmit an early measurement report and / or a cell reselection measurement report; a receiving module 32 configured to receive a secondary cell activation signaling; and a transmitting module 33 configured to transmit a channel state information report within a first time delay after receiving the secondary cell activation signaling.

[0127] The user equipment's transmitting module 31 can be used to perform step S21 in Figure 2. The user equipment's receiving module 32 can be used to perform step S22 in Figure 2. The user equipment's transmitting module 33 can be used to perform step S23 in Figure 2.

[0128] Figure 4 is a block diagram illustrating a user equipment according to some other embodiments of the present disclosure. As shown in Figure 4, the user equipment 4 includes a memory 41; and a processor 42 coupled to the memory 41, the processor 42 being configured to execute the secondary cell activation method as described in any of the embodiments above based on instructions stored in the memory.

[0129] By sending early measurement reports and / or cell reselection measurement reports, the aforementioned user equipment can recognize unknown secondary cells as known secondary cells, thus avoiding the need to perform time-frequency synchronization steps such as AGC adjustment, cell detection, L1-RSRP measurement and reporting, thereby shortening the activation process and reducing the latency of secondary cell activation.

[0130] Figure 5 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.

[0131] As shown in Figure 5, the computer system 5 can be represented in the form of a general computing device. The computer system 5 includes a memory 51, a processor 52, and a bus 50 connecting different system components.

[0132] The memory 51 can be various forms of computer-readable storage media, such as system memory, non-volatile storage media, etc. System memory may store, for example, an operating system, application programs, a boot loader, and other programs. System memory may include volatile storage media, such as random access memory (RAM) and / or cache memory. Non-volatile storage media may store, for example, instructions for executing a corresponding embodiment of the secondary cell activation method. Non-volatile storage media include, but are not limited to, disk storage, optical storage, flash memory, etc.

[0133] The processor 52 can be implemented using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistors, or other discrete hardware components. Accordingly, each module can be implemented by the central processing unit (CPU) running instructions in memory to execute the corresponding steps, or by dedicated circuitry to execute the corresponding steps.

[0134] Bus 50 can use any of the various bus architectures. For example, bus architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MCA) bus, and the Peripheral Component Interconnect (PCI) bus.

[0135] Computer system 5 may also include input / output interface 53, network interface 54, storage interface 55, etc. These interfaces 53, 54, 55, as well as memory 51 and processor 52, can be connected via bus 50. Input / output interface 53 provides connection interfaces for input / output devices such as monitors, mice, and keyboards. Network interface 54 provides connection interfaces for various networked devices. Storage interface 55 provides connection interfaces for external storage devices such as floppy disks, USB flash drives, and SD cards.

[0136] According to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, some embodiments of this disclosure include a computer program product that, when run on a computer, causes the computer to implement the secondary cell activation method described in any of the foregoing embodiments. The computer program product includes computer instructions carried on a computer-readable medium, the computer instructions containing program code for performing the methods shown in the flowcharts.

[0137] Various embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0138] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A secondary cell activation method, executed by a user equipment, comprising: Send early measurement reports and / or cell reselection measurement reports; Receive secondary cell activation signaling; Within the first time delay after receiving the secondary cell activation signaling, a channel status information report is transmitted.

2. The secondary cell activation method according to claim 1, wherein the capabilities of the user equipment include at least one of the following: The user equipment supports the ability to report early measurements; The user equipment supports the ability to use early measurement reports for secondary cell activation; The user equipment supports the ability to report cell reselection measurements; The user equipment supports the ability to use cell reselection measurement reports for secondary cell activation.

3. The secondary cell activation method according to claim 1, wherein, The early measurement report and / or cell reselection measurement report are valid if at least one of the following conditions is met: The user equipment determines the validity of the early measurement report and / or cell reselection measurement report through validity verification. The user equipment receives an indication message indicating that the early measurement report and / or cell reselection measurement report is valid; Within a second time delay before receiving the secondary cell activation signaling, the user equipment sends the early measurement report and / or cell reselection measurement report.

4. The secondary cell activation method according to claim 1, wherein, The secondary cell is a secondary cell with a frequency range of one, and the activation condition of the secondary cell satisfies at least one of the following: Within the third time delay before receiving the secondary cell activation signaling, the user equipment sends the early measurement report and / or cell reselection measurement report; The synchronization signal and physical broadcast channel block (SSB) measured during the third time delay are still detectable during secondary cell activation; SSBs measured within the measurement period of the aforementioned early measurement report are still detectable during secondary cell activation; SSBs measured during the cell reselection measurement cycle are still detectable during secondary cell activation.

5. The secondary cell activation method according to claim 4, wherein, The third delay is less than or equal to the second delay if the early measurement report and / or cell reselection measurement report are valid when the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling.

6. The secondary cell activation method according to claim 1, wherein, The secondary cell is a secondary cell in frequency range two, and the activation condition of the secondary cell satisfies at least one of the following: Within the fourth delay before receiving the most recent activation signaling of the Transmission Configuration Indication (TCI) or Channel Quality Indication (CQI) report, the user equipment sends the early measurement report and / or cell reselection measurement report. The synchronization signal and physical broadcast channel block (SSB) measured during the fourth delay are still detectable during secondary cell activation. SSBs measured within the measurement period of the aforementioned early measurement report are still detectable during secondary cell activation; SSBs measured during the cell reselection measurement cycle are still detectable during secondary cell activation.

7. The secondary cell activation method according to claim 6, wherein, The fourth delay is less than or equal to the second delay if the early measurement report and / or cell reselection measurement report are valid when the user equipment sends the early measurement report and / or cell reselection measurement report within a second delay before receiving the secondary cell activation signaling.

8. The secondary cell activation method according to claim 2, wherein, The capabilities supported by the user equipment are applicable to frequency range one FR1 band and / or frequency range two FR2 band.

9. The secondary cell activation method according to claim 2, wherein, The capabilities supported by the user equipment are applicable to frequency division duplex (FDD) bands and / or time division duplex (TDD) bands.

10. The secondary cell activation method according to claim 2, wherein, The granularity of the capabilities supported by the user equipment includes at least one of the following: per user equipment, per frequency band, per frequency band combination, per feature set, per feature set per component carrier, or per field description.

11. The secondary cell activation method according to claim 1, wherein, Within the fifth time delay after receiving the secondary cell activation signaling, the user equipment sends the early measurement report and / or cell reselection measurement report.

12. The secondary cell activation method according to claim 11, wherein, The fifth delay includes at least one of the following: delay in preparing early measurement reports and / or cell reselection measurement reports, delay in verifying the validity of early measurement reports and / or cell reselection measurement reports, and delay in waiting for uplink resources.

13. The secondary cell activation method according to claim 1, wherein, The secondary cell is a secondary cell with a frequency range of one, and the first delay includes at least one of the following: The time at which the first complete burst set of Synchronization Signal and Physical Broadcast Channel Block (SSB) bursts ends, as indicated by the SMTC (Synchronization Signal and Physical Broadcast Channel Block Measurement Time) configuration, or, if no SMTC is configured, is set to be less than or equal to a first time constant. The SMTC cycle of the secondary cell or the configured SMTC cycle; Second time constant; The end time of the first complete periodic Channel State Information Reference Signal (CSI-RS) burst set used for secondary cell activation; The period of the periodic CSI-RS burst set used for secondary cell activation; The end time of the first complete CSI-RS burst set for secondary cell activation; the CSI-RS burst set consists of four CSI-RS resources in two consecutive time slots. The CSI-RS burst set used for secondary cell activation is defined as four CSI-RS resources in two consecutive time slots. The gap length between two aperiodic CSI-RS burst sets.

14. The secondary cell activation method according to claim 1, wherein, The secondary cell is a secondary cell with a frequency range of one, and the first delay does not include at least one of the following: The larger of the synchronization signal and physical broadcast channel block measurement time configuration SMTC period of the active serving cell and the SMTC period of the activated secondary cell; Layer 1 reference signal received power measurement delay; The delay in reporting the Layer 1 reference signal received power measurement results or the delay in obtaining CSI report resources; The delay between downlink data transmission and confirmation; The time interval from the last activation signaling of the Physical Downlink Control Channel (PDCCH) Transmission Configuration Indication (TCI) and / or the Physical Downlink Shared Channel (PDSCH) Transmission Configuration Indication (TCI) to the first fully available SSB corresponding to the TCI state is completed by the user equipment. The period between the last activation signaling of the received PDCCH TCI and / or PDSCH TCI and the activation signaling of the known secondary cell or the first valid Layer 1 reference signal received power report of the unknown secondary cell; The period between receiving the Radio Resource Control (RRC) configuration message for the periodic CSI-RS TCI for Channel Quality Indication (CQI) reports and the activation signaling of a known secondary cell or the first valid Layer 1 Reference Signal Received Power Report of an unknown secondary cell; The period between receiving activation signaling for the semi-persistent CSI-RS resource set for CQI reporting and the activation signaling for a known secondary cell or the first valid Layer 1 reference signal received power report for an unknown secondary cell; RRC process delay.

15. The secondary cell activation method according to claim 1, wherein, The secondary cell is a secondary cell in frequency range two, and the first delay includes at least one of the following: The time interval from the last activation signaling of the Physical Downlink Control Channel (PDCCH) Transmission Configuration Indication (TCI) and / or the Physical Downlink Shared Channel (PDSCH) Transmission Configuration Indication (TCI) to the first fully available SSB corresponding to the TCI state is completed by the user equipment. The period between the last activation signaling of the received PDCCH TCI and / or PDSCH TCI and the activation signaling of the secondary cell or the first valid Layer 1 reference signal received power report of an unknown secondary cell; The radio resource control (RRC) configuration message for receiving the periodic channel state information reference signal CSI-RS (TCI) for channel quality indication (CQI) reporting, between the activation signaling of the secondary cell or the first valid layer-1 reference signal received power report of an unknown secondary cell; The period between receiving activation signaling for the semi-persistent CSI-RS resource set for CQI reporting and the activation signaling of the secondary cell or the first valid Layer 1 reference signal of an unknown secondary cell, and receiving power reports. RRC process delay; Third time constant.

16. The secondary cell activation method according to claim 15, wherein the first delay further includes at least one of the following: The time at which the first complete burst set of the Synchronization Signal and Physical Broadcast Channel Block (SSB) bursts ends, as indicated by the SMTC (Synchronization Signal and Physical Broadcast Channel Block Measurement Time) configuration, or, if no SMTC is configured, is set to less than or equal to the fourth time constant. The larger of the SMTC period of the active serving cell and the SMTC period of the secondary cell; The SMTC cycle of the secondary cell or the configured SMTC cycle.

17. The secondary cell activation method according to claim 1, wherein, The secondary cell is a secondary cell in frequency range two, and the first delay does not include at least one of the following: Layer 1 reference signal received power measurement delay; The delay in reporting the layer 1 reference signal received power measurement results or the delay in obtaining CSI report resources.

18. The secondary cell activation method according to claim 5, wherein the third delay is determined based on the maximum value of the secondary cell measurement period and the discontinuous reception period.

19. The secondary cell activation method according to claim 7, wherein the fourth delay is determined according to the power level supported by the user equipment.

20. A user equipment, comprising: The sending module is configured to send early measurement reports and / or cell reselection measurement reports; The receiving module is configured to receive secondary cell activation signaling; The transmission module is configured to transmit a channel status information report within a first time delay after receiving the secondary cell activation signaling.

21. A user equipment, comprising: Memory; and A processor coupled to the memory, the processor being configured to execute the secondary cell activation method according to any one of claims 1 to 19 based on instructions stored in the memory.

22. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the secondary cell activation method according to any one of claims 1 to 19.

23. A computer program product, wherein, The computer program product stores computer instructions, which, when executed by a processor, implement the secondary cell activation method according to any one of claims 1 to 19.

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