Secondary cell activation method, terminal and storage medium
By reporting measurement results after receiving secondary cell activation signaling and skipping part of the activation process, the problem of delayed activation of unknown secondary cells in carrier aggregation scenarios is solved, achieving rapid secondary cell activation and reducing resource overhead and energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-26
- Publication Date
- 2026-03-17
AI Technical Summary
In carrier aggregation scenarios, the activation delay of unknown secondary cells is relatively long, and existing technologies are unable to effectively reduce it.
After receiving the secondary cell activation signaling, the terminal reports the measurement results and skips the activation process of the third layer in the secondary cell activation process, including the third layer measurement and the first layer measurement process.
By skipping unnecessary measurement procedures, the activation latency of secondary cells is reduced, terminal resource consumption and energy consumption are lowered, and rapid activation of secondary cells is achieved.
Smart Images
Figure CN119383764B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of wireless communication, and more particularly to a secondary cell activation method, a terminal, and a storage medium. Background Technology
[0002] With the continuous evolution of 5G+ and 6G networks, carrier aggregation technology, as a key technology, can significantly improve the overall performance of network systems. Currently, common FR1 band combinations include 3.5GHz + 2.1GHz CA and 2.1GHz + 1.8GHz CA; FR2 millimeter-wave band combinations include 26GHz + 28GHz CA and 26GHz + 39GHz CA; and FR1 + FR2 CA combinations are also common. Carrier aggregation technology can solve the problem of limited bandwidth in a single frequency band, allowing for more flexible use of multiple frequency bands (high, medium, and low), leveraging the advantages of multiple bands to create networks with excellent coverage and capacity performance. Summary of the Invention
[0003] One technical problem this disclosure aims to solve is to provide a secondary cell activation method, terminal, and storage medium that can reduce the latency of secondary cell activation.
[0004] According to one aspect of this disclosure, a secondary cell activation method is proposed, comprising: after receiving the secondary cell activation signaling, reporting the measurement results of the secondary cell to the network-side device; and skipping the activation process of the third layer in the secondary cell activation process.
[0005] In some embodiments, the Layer 1 measurement process in the secondary cell activation procedure is skipped.
[0006] In some embodiments, the measurement results of the secondary cell are obtained before receiving the secondary cell activation signaling.
[0007] In some embodiments, skipping the third-level activation process in the secondary cell activation process includes: the latency requirement of the secondary cell activation process does not include the latency requirement of the third-level process.
[0008] In some embodiments, skipping the Layer 1 measurement process in the secondary cell activation process includes: the latency requirement of the secondary cell activation process does not include the latency requirement of the Layer 1 measurement.
[0009] In some embodiments, obtaining the measurement results of the secondary cell includes: performing measurements on the secondary cell and obtaining the measurement results within a certain period of time, but not reporting the measurement results to the network-side device.
[0010] In some embodiments, the measurement of the secondary cell performed includes at least one of the layer 3 measurement and layer 1 measurement of the secondary cell.
[0011] In some embodiments, the measurement results include at least one of the following: a layer 3 measurement result; a layer 3 measurement result carrying a synchronization signal and a physical broadcast channel block (SSB) index; a layer 1 measurement result; or a layer 1 measurement result carrying an SSB index.
[0012] In some embodiments, the measurement results include reference signal received power (RSRP), reference signal received quality (RSRQ), or signal-to-noise ratio (SINR).
[0013] In some embodiments, the measurement results are at least one of a measurement report based on the synchronization signal and physical broadcast channel block (SSB) and a measurement report based on the channel state information reference signal (CSI-RS).
[0014] In some embodiments, the reporting of measurement results of the secondary cell is triggered by a Media Access Control Layer Control Unit (MAC-CE) carried in the same manner as the secondary cell activation signaling, or by a MAC-CE carried in a manner different from the secondary cell activation signaling, or by downlink control information (DCI) signaling.
[0015] In some embodiments, when the reporting of measurement results of the secondary cell is triggered by a MAC-CE carried in the same way as the secondary cell activation signaling, the MAC-CE includes information for instructing the terminal to report the measurement report of the secondary cell.
[0016] In some embodiments, measurement configuration information sent by a network-side device for the terminal to report measurement results is received.
[0017] In some embodiments, receiving measurement configuration information sent by the network-side device for the terminal to report measurement results includes: receiving measurement configuration information sent by the network-side device via Radio Resource Control (RRC) signaling for the terminal to report measurement results.
[0018] In some embodiments, the measurement results are reported as event-triggered reports.
[0019] In some embodiments, the event is a secondary cell activation event.
[0020] In some embodiments, reporting the measurement results of the secondary cell to the network-side equipment includes: reporting the measurement results via Radio Resource Control (RRC) signaling, Media Access Control (MAC-CE) layer control unit, or Uplink Control Information (UCI).
[0021] According to another aspect of this disclosure, a terminal is also proposed, comprising: a result reporting unit configured to report the measurement results of the secondary cell to the network-side device after receiving the secondary cell activation signaling; and a process execution unit configured to skip the activation process of the third layer in the secondary cell activation process.
[0022] In some embodiments, the process execution unit is also configured to skip the Layer 1 measurement process in the secondary cell activation process.
[0023] According to another aspect of this disclosure, a terminal is also proposed, comprising: a memory; and a processor coupled to the memory, the processor being configured to execute the secondary cell activation method as described above based on instructions stored in the memory.
[0024] According to another aspect of this disclosure, a non-transitory computer-readable storage medium is also proposed, on which computer program instructions are stored, which, when executed by a processor, implement the secondary cell activation method as described above.
[0025] In this embodiment, after receiving the secondary cell activation signaling, the terminal reports the measurement results and skips the third-level activation process in the secondary cell activation procedure, i.e., it executes the enhanced secondary cell activation procedure to complete the secondary cell activation process. This satisfies the secondary cell activation requirements while reducing activation latency.
[0026] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0027] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.
[0028] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:
[0029] Figure 1 This is a flowchart illustrating some embodiments of the secondary cell activation method disclosed herein;
[0030] Figure 2 The following are schematic flowcharts illustrating other embodiments of the secondary cell activation method disclosed herein;
[0031] Figure 3 The following are schematic flowcharts illustrating other embodiments of the secondary cell activation method disclosed herein;
[0032] Figure 4 This is a schematic diagram of the structure of some embodiments of the terminal disclosed herein;
[0033] Figure 5 These are schematic diagrams illustrating the structure of some other embodiments of the terminal disclosed herein; and
[0034] Figure 6 The diagram shows the structure of some other embodiments of the terminal disclosed herein. Detailed Implementation
[0035] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.
[0036] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.
[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.
[0038] 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.
[0039] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0041] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.
[0042] In related technologies, the activation of unknown secondary cells in carrier aggregation scenarios involves many processes, resulting in long activation delays. How to reduce the activation delay of unknown secondary cells in carrier aggregation scenarios is an important issue.
[0043] Figure 1This is a flowchart illustrating some embodiments of the secondary cell activation method disclosed herein. These embodiments are executed by a terminal, which may also be referred to as UE (user equipment). A terminal is a device with wireless transceiver capabilities, capable of communicating with one or more CNs (core networks) via access network devices in a (R)AN (radio access network). It can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water, such as on ships; and it can be deployed in the air, such as on airplanes, balloons, or satellites. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, VR (virtual reality) terminal devices, AR (augmented reality) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
[0044] In step 110, after receiving the secondary cell activation signaling, the measurement results of the secondary cell are reported to the network-side equipment. This network-side equipment is, for example, a base station.
[0045] In some embodiments, the measurement result is a valid measurement result, for example, a valid Layer 3 measurement result, or a valid Layer 3 measurement result carrying an SSB (Synchronization Signal and PBCH block) index, or a valid Layer 1 measurement result, or a valid Layer 1 measurement result carrying an SSB index.
[0046] In some embodiments, the measurement results include RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), or SINR (Signal-to-noise and Interference Ratio).
[0047] Valid measurement results include those that meet the measurement index requirements, such as RSRP, RSRQ, or SINR that meet the standard-defined measurement index requirements. For example, RSRP, RSRQ, or SINR is greater than a certain threshold.
[0048] In some embodiments, the measurement results are at least one of an SSB-based measurement report and a CSI-RS (Channel State Information-Reference Signal)-based measurement report.
[0049] In some embodiments, the terminal reports a measurement report within a certain time period. This time period is indicated by RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, or DCI (Downlink Control Information) signaling. This time period is a corresponding fixed or configurable time offset. For example, the time period can be expressed as X milliseconds or X time slots relative to the moment the terminal receives the MAC-CE (Control Element) measurement result reporting trigger indication or secondary cell activation signaling. If the terminal fails to report the measurement result within this time period, the terminal will not report the measurement result.
[0050] In some embodiments, there is no restriction on the time when the terminal reports the measurement report; that is, the terminal decides when to report the measurement report, and the time for reporting the measurement report depends on the terminal implementation.
[0051] In some embodiments, without imposing time restrictions on the terminal's reporting of measurement reports, the latency requirements for subsequent processes, such as the latency requirements corresponding to the indeterminate latency of TCI (Transmission Configuration Indicator), can be defined as a time period. This time period is the earlier of the TCI configuration / activation time relative to the triggered measurement result report and the first valid L1-RSRP report in the original process. The triggered measurement result report is, for example, the report corresponding to the reported Layer 3 measurement result. The network-side device determines whether to configure TCI based on the report corresponding to the Layer 3 measurement result reported after the secondary cell activation signaling or based on the originally defined L1-RSRP report.
[0052] In some embodiments, the terminal reports measurement results via RRC, MAC-CE, or UCI (Uplink Control Information). The reporting of these measurement results conforms to the measurement reporting guidelines defined in current standards. The reporting of these measurement results is based on event-triggered aperiodic or periodic reporting.
[0053] The terminal reports the measurement results of the secondary cell to the network-side equipment via RRC messages, such as through the RRC MeasurementReport message. The measurement results include the beam-level layer 3 measurement results and the beam index (SSB index).
[0054] In step 120, the activation process of the third layer in the secondary cell activation process is skipped.
[0055] The activation process of Layer 3 in the secondary cell activation procedure is skipped, meaning that the activation process of Layer 3 in the secondary cell activation procedure is not executed. For example, the latency requirement of the secondary cell activation procedure does not include the latency requirement of Layer 3. After the terminal reports the measurement results, the Layer 1 reference signal received power measurement and reporting procedure of the secondary cell activation procedure is directly executed, and subsequent related procedures are performed, such as executing TCI status activation, fine time tracking, etc., to complete the secondary cell activation.
[0056] In some embodiments, the terminal skips the Layer 3 activation process and the Layer 1 measurement process in the secondary cell activation procedure. That is, the Layer 3 activation process and the Layer 1 measurement process in the secondary cell activation procedure are not executed. For example, the latency requirements of the secondary cell activation procedure do not include the latency requirements of the Layer 3 process and the Layer 1 measurement process.
[0057] After the terminal reports the measurement results, it does not execute the Layer 3 related procedures and the Layer 1 reference signal received power measurement procedure. Instead, it directly proceeds to the subsequent related procedures to complete the secondary cell activation. For example, after reporting the measurement results, the terminal does not execute the Layer 3 related procedures and the Layer 1 reference signal received power measurement procedure. Instead, it directly executes the Layer 1 reference signal received power reporting procedure. It can use the aforementioned reported measurement results for Layer 1 reporting and execute procedures such as TCI status activation and fine time tracking.
[0058] In the above embodiment, after receiving the secondary cell activation signaling, the terminal reports the measurement results and skips the third-level activation process in the secondary cell activation procedure, i.e., it executes the enhanced secondary cell activation procedure to complete the secondary cell activation process. This satisfies the secondary cell activation requirements while reducing activation latency.
[0059] Figure 2 This is a flowchart illustrating some other embodiments of the secondary cell activation method disclosed herein.
[0060] In step 210, the terminal obtains the measurement results of the secondary cell before receiving the secondary cell activation signaling.
[0061] In some embodiments, measurements of the secondary cell have been performed and the measurement results have been obtained over a period of time, but the measurement results have not been reported to the network-side device.
[0062] For example, before receiving the secondary cell activation signaling, the terminal has valid measurement results and carries the SSB index, but does not report them to the network-side equipment.
[0063] The measurement of the secondary cell that has been performed is at least one of the layer 3 measurement and layer 1 measurement of the secondary cell.
[0064] This time period is a period defined by the standard, for example, a period defined by the TS 38.133 standard.
[0065] In step 220, after receiving the secondary cell activation signaling, the terminal reports the measurement results of the secondary cell to the network-side equipment.
[0066] In some embodiments, the reporting of measurement results of the secondary cell is triggered by a MAC-CE carried on the same MAC-CE as the secondary cell activation signaling, or by a MAC-CE carried on a different MAC-CE than the secondary cell activation signaling, or by DCI signaling.
[0067] When the reporting of measurement results for the secondary cell is triggered by a MAC-CE carried in the same MAC-CE as the secondary cell activation signaling, the MAC-CE includes information instructing the terminal to report the measurement results for the secondary cell. For example, the MAC-CE may or may not include added content. Adding content means adding a field to the existing MAC-CE to instruct the terminal to report measurement results; this field may contain a new value. For example, the MAC-CE may carry a report configuration number or an indication of measurement report performance. Not adding content means that the existing MAC-CE instructs the terminal to report measurement results, and no new value is added to the MAC-CE. After receiving the MAC-CE measurement result reporting trigger instruction sent by the network-side device, the terminal reports the measurement results.
[0068] The MAC-CE is different from the secondary cell activation signaling; that is, a new MAC-CE is defined to trigger the reporting of measurement results.
[0069] In some embodiments, after receiving measurement configuration information sent by the network-side device for the terminal to report measurement results, the terminal reports the measurement results. For example, the terminal receives measurement configuration information sent by the network-side device via RRC signaling for the terminal to report measurement results. The measurement configuration information includes the report type (periodic or event-triggered), the report's CGI (Cell Global Identifier), the reference signal type used in the report, the report time interval, and measurement metrics (RSRP, RSRQ, SINR, etc.).
[0070] In some embodiments, the measurement configuration information used by the terminal to report measurement results is configured in the secondary cell addition signaling.
[0071] In some embodiments, the measurement results are reported as an event-triggered report. The event is a secondary cell activation event.
[0072] In some embodiments, the terminal reports valid measurement results, such as SSB index, RSRP value, RSRQ value, SINR value, etc. The SSB remains detectable during secondary cell activation.
[0073] In some embodiments, if the terminal does not have a valid measurement result, it does not need to report the measurement result to the network-side device, or the terminal reports a null value, or other values. For example, other values may be RSRP_0, SS-RSRQ_0, SINR_0, or other possible values. RSRP_0, SS-RSRQ_0, and SINR_0 are specifically defined in the standard and will not be elaborated further here.
[0074] In step 230, the terminal skips the activation process of layer 3 and the measurement process of layer 1 in the secondary cell activation process.
[0075] In some embodiments, the terminal performs other possible enhancements, which depend on the terminal's capabilities.
[0076] In some embodiments, the activation process of the three layers includes, for example, an AGC (Automatic Gain Control) adjustment process, a cell search process, a time-frequency tracking process, and a beam information acquisition process.
[0077] In the above embodiments, the terminal executes an enhanced secondary cell activation process. By not executing the relevant processes of the third layer and the measurement process of the first layer in the secondary cell activation process, the secondary cell activation process can be accelerated, thereby reducing latency. In addition, since the terminal has measured the secondary cell before the secondary cell activation signaling but has not had time to report the measurement results to the network, after receiving the secondary cell activation signaling, since it does not need to execute part of the activation process, the terminal can avoid repeated measurement, thereby reducing terminal resource overhead and energy consumption.
[0078] Figure 3 This is a flowchart illustrating some other embodiments of the secondary cell activation method disclosed herein. This embodiment is applied to a carrier aggregation unknown secondary cell activation scenario, specifically for a carrier aggregation unknown secondary cell activation scenario in frequency range 1 or frequency range 2.
[0079] In step 310, before receiving the secondary cell activation signaling, the terminal has performed a measurement of the secondary cell within a period of time defined by the standard, and has a valid measurement result, but has not reported the measurement result to the network-side equipment.
[0080] For example, for the FR1 band, a period of time is the max(5*measCycleSCell, 5*DRX cycles) period before the terminal receives the secondary cell activation signaling. measCycleSCell is the secondary cell measurement period, and DRX cycles is the DRX (Discontinuous Reception) period.
[0081] For example, for the FR2 band, a period of time equal to 4 seconds or 3 seconds is defined as the time before the terminal receives the PDCCH (Physical Downlink Control Channel) TCI, the PDSCH (Physical Downlink Shared Channel) TCI (where applicable), and the last activation signaling for the semi-persistent CSI-RS (where applicable) used for CQI (Channel Quality Indicator) reporting. 4 seconds corresponds to a terminal power level of 1 / 5, and 3 seconds corresponds to a terminal power level of 2 / 3 / 4. Furthermore, the terminal receives the secondary cell activation signaling no later than the terminal receives the MAC CE signaling activated by the TCI.
[0082] In step 320, after receiving the secondary cell activation signaling, the terminal reports the measurement results of the valid secondary cell to the network-side equipment.
[0083] Network-side devices send measurement configuration information to terminals for the terminals to report measurement results. For example, the network-configured measurement report is configured in the secondary cell addition signaling. Alternatively, an additional measurement reporting mechanism can be configured and associated with the measurement configuration.
[0084] In some embodiments, the terminal reports measurement results via RRC, MAC CE, or UCI, and the reporting of these measurement results meets the measurement reporting guidelines defined in the current standard. For example, the measurement metrics defined in the current TS 38.133 standard include measurement latency, measurement accuracy requirements, etc. More specifically, the measurement requirements for inactive secondary cells are defined in Chapter 9 of TS 38.133, Tables 9.2.5.2-3 and 9.2.5.2-4, applicable to the FR1 and FR2 bands respectively, and the accuracy requirements are defined in Chapter 10 of TS 38.133.
[0085] In some embodiments, the reporting of measurement results is limited to a certain time period, or no time limit is imposed on terminal reporting. If no time limit is imposed on terminal reporting, i.e., it depends on the terminal implementation, then the latency requirements corresponding to subsequent processes, such as the latency requirements corresponding to the indeterminate latency of TCI, can be defined as a time period. This time period is the time corresponding to the earlier report between the triggered measurement result report and the first valid L1-RSRP report in the original process, which is, for example, the report corresponding to the reported Layer 3 measurement result. The network-side device implementation determines whether to configure TCI based on the report corresponding to the Layer 3 measurement result reported after the secondary cell activation signaling or based on the originally defined L1-RSRP report.
[0086] In step 330, the latency requirement for the secondary cell activation process does not include the latency requirement of the third layer and the latency requirement of the first layer measurement.
[0087] For example, when a valid measurement result, such as a Layer 3 measurement result carrying an SSB index, is reported after the secondary cell activation signaling, and the terminal reports a Layer 1 measurement according to the original secondary cell activation procedure before the network configures the TCI for the terminal, the activation latency requirement is adjusted to: the latency requirement for the Layer 3 part in the standard does not include T. FirstSSB_MAX +15*T SMTC_MAX +8*T rs , among which, T FirstSSB_MAX The end time of the first complete SSB burst set indicated by SMTC, or within 5ms if SMTC is not configured. SMTC_MAX This refers to a longer SMTC cycle among multiple cells or the SMTC cycle of an activated secondary cell. T rsFor the SMTC cycle of the activated secondary cell or the SMTC cycle configured in the higher-layer parameters, the specific delay definition refers to standard TS 38.133. Or the AGC adjustment part T defined in the standard. FirstSSB_MAX +15*T SMTC_MAX Removed, cell search / measurement section 8*T rs Removed, retained, or combined with other enhancement operations such as reducing the beam scan coefficient to an integer less than 8.
[0088] For example, when a valid measurement result, such as a Layer 3 measurement result carrying an SSB index, is reported after the secondary cell activation signaling, the terminal skips the Layer 3 related procedures and the Layer 1 reference signal received power measurement procedure in the secondary cell activation process. The terminal directly executes the Layer 1 reference signal received power reporting procedure, and can use the aforementioned reported Layer 3 measurement result for Layer 1 reporting, and execute procedures such as TCI status activation and fine time tracking. The network-side equipment configures TCI based on the report of this Layer 3 measurement result. This report is earlier than the report corresponding to the Layer 1 reference signal received power measurement reported by the terminal according to the original secondary cell activation procedure. The activation delay requirement is adjusted to: the delay requirement of the Layer 3 part in the standard does not include T FirstSSB_MAX +15*T SMTC_MAX +8*T rs The delay requirement for Layer 1 measurement does not include T. L1-RSRP,measure , among which, T L1-RSRP,measure The delay is measured for L1-RSRP.
[0089] In some embodiments, the reported Layer 3 measurement results are used for Layer 1 reporting.
[0090] In the above embodiments, to address the issue of long activation times for unknown secondary cells in carrier aggregation of frequency range 1 or frequency range 2, this embodiment ensures that the terminal has valid measurement results and carries an SSB index before receiving the secondary cell activation signaling, without reporting them to the network. After receiving the secondary cell activation signaling, the terminal reports the measurement results. After reporting the measurement results, the terminal does not execute the layer 3 related procedures and layer 1 measurement procedures in the secondary cell activation process. On the one hand, this can accelerate the secondary cell activation process and reduce latency; on the other hand, it avoids the terminal performing repeated measurements, reducing terminal resource overhead and energy consumption.
[0091] Figure 4 The diagram below shows the structure of some embodiments of the terminal disclosed herein, which includes a result reporting unit 410 and a process execution unit 420.
[0092] The result reporting unit 410 is configured to report the measurement results of the secondary cell to the network-side device after receiving the secondary cell activation signaling.
[0093] For example, the result reporting unit 410 reports the measurement results via RRC signaling, MAC-CE, or UCI.
[0094] In some embodiments, the measurement results include layer 3 measurement results, or layer 3 measurement results carrying the same SSB index, or layer 1 measurement results, or layer 1 measurement results carrying the SSB index. The measurement results include RSRP, or RSRQ, or SINR.
[0095] The measurement result is in at least one of an SSB-based measurement report and a CSI-RS-based measurement report.
[0096] The reporting of measurement results for the secondary cell is triggered by a MAC-CE carried in the same way as the secondary cell activation signaling, or by a MAC-CE carried in a different way than the secondary cell activation signaling, or by downlink control information (DCI) signaling. When the reporting of measurement results for the secondary cell is triggered by a MAC-CE carried in the same way as the secondary cell activation signaling, the MAC-CE includes information instructing the terminal to report the measurement results for the secondary cell.
[0097] The report of this measurement result is an event-triggered report. For example, the event is a secondary cell activation event.
[0098] In some embodiments, such as Figure 5 As shown, the terminal also includes an information acquisition unit 510, which is configured to acquire the measurement results of the secondary cell before receiving the secondary cell activation signaling.
[0099] For example, within a certain period of time, the terminal has performed measurements of the secondary cell and obtained the measurement results, but has not reported the measurement results to the network-side device. Performing measurements of the secondary cell includes performing at least one of the layer 3 and layer 1 measurements of the secondary cell.
[0100] In some embodiments, the information acquisition unit 510 is further configured to receive measurement configuration information sent by the network-side device for the terminal to report measurement results. For example, receiving measurement configuration information sent by the network-side device via RRC signaling for the terminal to report measurement results.
[0101] The process execution unit 420 is configured to skip the activation process of the third layer in the secondary cell activation process.
[0102] For example, the latency requirements for the auxiliary cell activation process do not include the latency requirements for the third layer.
[0103] In some embodiments, the process execution unit 420 is further configured to skip the Layer 1 measurement process in the secondary cell activation process.
[0104] For example, the latency requirements for the secondary cell activation process do not include the latency requirements for Layer 1 measurements.
[0105] In the above embodiment, after receiving the secondary cell activation signaling, the terminal reports the measurement results and skips the third-level activation process in the secondary cell activation procedure, i.e., it executes the enhanced secondary cell activation procedure to complete the secondary cell activation process. This satisfies the secondary cell activation requirements while reducing activation latency.
[0106] Figure 6 This is a schematic diagram illustrating the structure of some other embodiments of the terminal disclosed herein. The terminal includes a memory 610 and a processor 620. The memory 610 can be a disk, flash memory, or any other non-volatile storage medium. The memory is used to store instructions from the above embodiments. The processor 620 is coupled to the memory 610 and can be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 620 is used to execute the instructions stored in the memory.
[0107] In some embodiments, the processor 620 is coupled to the memory 610 via a BUS bus 630. The terminal 600 can also be connected to an external storage system 650 via a storage interface 640 to access external data, and can also be connected to a network or another computer system (not shown) via a network interface 660. Further details are omitted here.
[0108] In this embodiment, by storing data instructions in a memory and then processing the instructions by a processor, it can be applied to the unknown secondary cell activation scenario of carrier aggregation, thereby reducing the latency of unknown secondary cell activation.
[0109] In other embodiments, a computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the steps of the methods described above. Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0110] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0111] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0112] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0113] This concludes the detailed description of the present disclosure. To avoid obscuring the concept of the 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.
[0114] While specific embodiments of this disclosure have been described in detail by way of example, 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 without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.
Claims
1. A method for activating a secondary cell, comprising: obtaining measurement results of a secondary cell before receiving a secondary cell activation signaling, wherein the measurement results of the secondary cell include layer 1 measurement results, and the layer 1 measurement results are obtained by performing layer 1 measurement of the secondary cell within a time period and obtaining the measurement results, but not reporting the measurement results to a network device; reporting the measurement results of the secondary cell to the network device after receiving the secondary cell activation signaling; and skipping activation of a layer 3 part of a secondary cell activation procedure. 2.The method of claim 1, further comprising: skipping a layer 1 measurement procedure of the secondary cell activation procedure.
3. The secondary cell activation method of claim 1, wherein, The skipping of the activation of the layer 3 part of the secondary cell activation procedure comprises: the secondary cell activation procedure does not include a delay requirement of the layer 3 part.
4. The secondary cell activation method of claim 3, wherein, The secondary cell activation procedure does not include the delay requirement of the layer 3 part comprises: The latency requirement of the secondary cell activation procedure does not include: T FirstSSB_MAX + 15*T SMTC_MAX + 8*T rs , wherein T FirstSSB_MAX is the time of the end of 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, or set to less than or equal to 5 ms when SMTC is not configured; T SMTC_MAX is the larger value of the SMTC period of the active serving cell and the SMTC period of the activated secondary cell, or the SMTC period of the activated secondary cell; T rs is the SMTC period of the activated secondary cell or the configured SMTC period.
5. The secondary cell activation method of claim 2, wherein, The skipping of the layer 1 measurement procedure of the secondary cell activation procedure comprises: the secondary cell activation procedure does not include a delay requirement of the layer 1 measurement.
6. The secondary cell activation method of claim 5, wherein, The secondary cell activation procedure does not include the delay requirement of the layer 1 measurement comprises: The latency requirement of the secondary cell activation procedure does not include: T L1-RSRP, measure， wherein T L1-RSRP, measure is a L1-RSRP layer one reference signal received power measurement latency.
7. The secondary cell activation method of claim 1, wherein, The measurement results further comprise at least one of: layer 3 measurement results; layer 3 measurement results and a synchronization signal and physical broadcast channel block (SSB) index; or layer 1 measurement results and the SSB index.
8. The secondary cell activation method of claim 1, wherein, The measurement results are valid measurement results, and the valid measurement results include valid layer 1 measurement results, and further comprise at least one of: valid layer 3 measurement results; valid layer 3 measurement results and the SSB index; or valid layer 1 measurement results and the SSB index.
9. The secondary cell activation method of claim 1, wherein, The measurement results comprise at least one of a reference signal received power (RSRP), a reference signal received quality (RSRQ), or a signal to noise and interference ratio (SINR).
10. The secondary cell activation method of claim 1, wherein, The measurement results are at least one of a synchronization signal and physical broadcast channel block (SSB) based measurement report and a channel state information reference signal (CSI-RS) based measurement report.
11. The secondary cell activation method of claim 1, wherein, The reporting of the measurement results of the secondary cell is triggered by a medium access control (MAC) -control element (CE), a downlink control information (DCI), or a radio resource control (RRC) signaling.
12. The secondary cell activation method of claim 11, wherein, In a case that the reporting of the measurement results of the secondary cell is triggered by the MAC-CE, the MAC-CE includes information indicating that the terminal reports the measurement results of the secondary cell. 13.The method of any one of claims 1-12, further comprising: receiving measurement configuration information for reporting the measurement results from the network device.
14. The secondary cell activation method of claim 13, wherein, The receiving of the measurement configuration information for reporting the measurement results from the network device comprises: receiving the measurement configuration information for reporting the measurement results from the network device by a radio resource control (RRC) signaling.
15. The secondary cell activation method of claim 13, wherein, The reporting of the measurement results is event-triggered.
16. The secondary cell activation method of claim 15, wherein, The event is a secondary cell activation event.
17. The secondary cell activation method of any of claims 1 to 12, wherein, reporting the measurement result of the secondary cell to a network side device comprises: reporting the measurement result through radio resource control (RRC) signaling, a medium access control (MAC) control element (CE), or uplink control information (UCI).
18. A terminal comprising: a result reporting unit configured to obtain a measurement result of a secondary cell before receiving secondary cell activation signaling, the obtaining of the measurement result of the secondary cell comprising: having performed a layer one measurement of the secondary cell and having obtained the measurement result within a period of time, but not having reported the measurement result to a network side device, and reporting the measurement result of the secondary cell to the network side device after receiving the secondary cell activation signaling, the measurement result comprising a layer one measurement result; and a procedure execution unit configured to skip a layer three part of an activation procedure in a secondary cell activation procedure.
19. The terminal of claim 18, wherein the procedure execution unit is further configured to skip a layer one measurement procedure in the secondary cell activation procedure.
20. A terminal comprising: a memory; and a processor coupled to the memory, the processor configured to perform the secondary cell activation method of any one of claims 1 to 17 based on instructions stored in the memory.
21. A non-transitory computer readable storage medium having computer program instructions stored thereon, the instructions, when executed by a processor, implementing the secondary cell activation method of any one of claims 1 to 17.