A secondary cell activation method, device, system and storage medium

Abstract

The application provides a secondary cell activation method, device and system. The method can be applied to a secondary cell activation scene. In the method, a terminal device receives first signaling sent by a network device, the first signaling is used to trigger activation of a secondary cell, and the first signaling carries first indication information through a reserved bit, the first indication information is used to instruct the terminal device to send a first sounding reference signal to the network device, and the first sounding reference signal is used to determine uplink channel state information. The terminal device determines a transmission resource corresponding to the secondary cell from a pre-configured transmission resource set based on the first indication information, and the transmission resource is used to guide sending of the first sounding reference signal. Then, the terminal device sends the first sounding reference signal to the network device by using the transmission resource. It can be seen that the method can carry the first indication information through the reserved bit in the first signaling, does not need to modify the first signaling, and ensures correct analysis of the first signaling.

Description

Technical Field

[0001] This application relates to the field of communications, and in particular to a method, apparatus, system and storage medium for activating a secondary cell. Background Technology

[0002] Secondary cell (SCell) activation is a crucial process in carrier aggregation technology, designed to provide additional radio resources for user equipment (UE) to improve data transmission rates. SCell activation is typically initiated by the base station (eNB or gNB) sending an activation command within the primary cell (PCell) via downlink control information (DCI). When the UE receives the activation command in time slot n, it must complete the activation process no later than time slot n+k. The value of k depends on the network configuration.

[0003] The secondary cell activation process involves three core steps: synchronization establishment, signal measurement, and channel state information (CSI) reporting. However, according to existing 3GPP protocols, when the SCell is inactive, the UE is prohibited from sending a sounding reference signal (SRS) or reporting CSI to the base station; SRS and / or CSI-related procedures are only allowed to be triggered after the UE and SCell have completed synchronization. The base station assesses uplink channel quality based on SRS.

[0004] Currently, when activating a secondary cell, the base station adds a field to the activation signaling to trigger the UE to send a Resource Set Reference (SRS). This field informs the UE of the resource set corresponding to the SRS to be sent. This method changes the structure of the activation signaling and may affect the UE's ability to parse the activation signaling. Summary of the Invention

[0005] This application provides a secondary cell activation method, apparatus, system, and storage medium that does not require adding new fields and avoids affecting the parsing of activation signaling by terminal devices.

[0006] Firstly, a secondary cell activation method is provided. This method can be executed by a terminal device, or by a component (such as a circuit, chip, or chip system) configured in the terminal device, or by a logic module or software capable of implementing all or part of the terminal device's functions. This application does not limit the scope of this method. The following description uses a terminal device as an example.

[0007] The method includes: a terminal device receiving a first signaling message sent by a network device, the first signaling message being used to trigger the activation of a secondary cell, and the first signaling message carrying first indication information through reserved bits, the first indication information being used to instruct the terminal device to send a first probe reference signal to the network device, the first probe reference signal being used to determine uplink channel state information. Based on the first indication information, the terminal device determines the transmission resources corresponding to the secondary cell from a pre-configured set of transmission resources, the transmission resources being used to guide the transmission of the first probe reference signal. Then, the terminal device uses the transmission resources to send the first probe reference signal to the network device. It is evident that this method can carry the first indication information through reserved bits in the first signaling message, without requiring modification of the first signaling message, thus ensuring the correct parsing of the first signaling message.

[0008] Secondly, a secondary cell activation method is provided. This method can be executed by a network device, or by a component (such as a circuit, chip, or chip system) configured in the network device, or by a logic module or software capable of implementing all or part of the functions of the network device. This application does not limit this approach. The following description uses a network device (such as a satellite) as an example.

[0009] The method includes: a network device sending a first signaling message to a terminal device, the first signaling message being used to trigger the activation of a secondary cell; a reserved bit in the first signaling message carrying first indication information; the first indication information being used to instruct the terminal device to send a first probe reference signal to the network device; the first probe reference signal being used to determine uplink channel state information; and the network device receiving the first probe reference signal sent by the terminal device using preset transmission resources. The transmission resources are determined by the terminal device from a pre-configured set of transmission resources based on the first indication information.

[0010] The second aspect is the implementation on the network device side, which corresponds to the first aspect. The explanations, supplements, and descriptions of the beneficial effects of the first aspect also apply to the second aspect, and will not be repeated here.

[0011] Thirdly, a communication device is provided, comprising a processing module and a transceiver module. The transceiver module is configured to receive a first signaling sent by a network device, the first signaling being used to trigger the activation of a secondary cell. A reserved bit in the first signaling carries first indication information, the first indication information being used to instruct a terminal device to send a first probe reference signal to the network device, the first probe reference signal being used to determine uplink channel state information. The processing module is configured to determine, based on the first indication information, the transmission resources corresponding to the secondary cell to be activated from a pre-configured set of transmission resources, the transmission resources being used to guide the transmission of the first probe reference signal. The transceiver module is further configured to use the transmission resources to send the first probe reference signal to the network device.

[0012] Fourthly, a communication device is provided, comprising a transceiver module. The transceiver module is configured to send a first signaling to a terminal device, the first signaling being used to trigger the activation of a secondary cell. A reserved bit in the first signaling carries first indication information, the first indication information being used to instruct the terminal device to send a first probe reference signal to a network device, the first probe reference signal being used to determine uplink channel state information. The transceiver module is also configured to receive the first probe reference signal sent by the terminal device using preset transmission resources, the transmission resources being the transmission resources corresponding to the secondary cell determined by the terminal device from a pre-configured set of transmission resources based on the first indication information.

[0013] The third and fourth aspects are the implementation on the device side, which correspond to the first and second aspects. The explanations, supplements, and descriptions of the beneficial effects of the first and second aspects also apply to the third and fourth aspects, and will not be repeated here.

[0014] Fifthly, a communication device is provided, including a processor. The processor is coupled to a memory and can be used to execute instructions or data in the memory to implement the method in any possible implementation of the first aspect described above. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0015] In one implementation, the communication interface may be a transceiver, or an input / output interface.

[0016] In another implementation, the communication device is a chip configured in a terminal device. When the communication device is a chip configured in a terminal device, the communication interface can be an input / output interface.

[0017] In a sixth aspect, a communication device is provided, including a processor. The processor is coupled to a memory and can be used to execute instructions or data in the memory to implement the method in any possible implementation of the second aspect described above. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0018] In one implementation, the communication interface may be a transceiver, or an input / output interface.

[0019] In a seventh aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, causing the processor to execute a method in any possible implementation of any aspect.

[0020] In specific implementation, the processor can be one or more chips, the input circuit can be input pins, the output circuit can be output pins, and the processing circuit can be transistors, gate circuits, flip-flops, and various logic circuits. The input signal received by the input circuit can be received and input by, for example, but not limited to, a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to and transmitted by a transmitter. Furthermore, the input circuit and the output circuit can be the same circuit, which is used as both the input circuit and the output circuit at different times. This application does not limit the specific implementation of the processor and various circuits.

[0021] Eighthly, a communication device is provided, including a processor and a memory. The processor is used to read instructions stored in the memory, receive signals via a receiver, and transmit signals via a transmitter to execute the method in any possible implementation of any of the preceding aspects.

[0022] Optionally, the processor may be one or more, and the memory may be one or more.

[0023] Ninthly, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code or instructions) that, when the computer program is run, causes a computer to perform a method in any possible implementation of any of the above aspects.

[0024] In a tenth aspect, a computer-readable storage medium is provided that stores a computer program (also referred to as code or instructions) that, when run on a computer, causes the computer to perform the method in any possible implementation of any of the above aspects.

[0025] Eleventhly, embodiments of this application provide a chip system including one or more processors for calling and executing instructions stored in memory, causing the methods in any of the above aspects or possible implementations to be executed. The chip system may be composed of chips or may include chips and other discrete devices.

[0026] The chip system may include input circuits or interfaces for transmitting information or data, and output circuits or interfaces for receiving information or data.

[0027] In a twelfth aspect, a communication system is provided, including the aforementioned terminal device and network device. Optionally, the communication system may further include other devices that communicate with the terminal device and / or network device. Attached Figure Description

[0028] Figure 1A communication system structure diagram provided in this application embodiment;

[0029] Figure 2 Signaling interaction diagram of a secondary cell activation method provided in this application;

[0030] Figure 3a This is a schematic diagram of a resource template provided in an embodiment of this application;

[0031] Figure 3b A time-frequency location diagram provided for an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of an application scenario provided by an embodiment of this application;

[0033] Figure 5 A schematic diagram of UE-side secondary cell activation behavior provided in an embodiment of this application;

[0034] Figure 6 This application provides a schematic diagram of base station-side secondary cell activation behavior as an embodiment of the present application.

[0035] Figure 7 A structural diagram of a communication device provided in an embodiment of this application;

[0036] Figure 8 This is a structural diagram of another communication device provided in an embodiment of this application. Detailed Implementation

[0037] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0038] The technical solutions provided in this application can be applied to various communication systems, such as: Global System for Mobile Communications (GSM) systems, General Packet Radio Service (GPRS), Wireless Local Area Network (WLAN), Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, sidelink communication systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, non-terrestrial network (NTN) communication systems, 5th generation (5G) mobile communication systems, or new radio access technology (NR). Among these, 5G mobile communication systems can include non-standalone (NSA) and / or standalone (SA) networking. The technical solutions provided in this application can also be applied to future communication systems. This application does not limit the scope of these applications.

[0039] Figure 1 This is a schematic diagram of a communication system 100 used in an embodiment of this application. The communication system 100 may include network devices, such as... Figure 1 The network device 110 is shown. The communication system 100 may also include terminal devices, such as... Figure 1 The terminal device 120 shown is connected to the network device 110 via a wireless link.

[0040] Figure 1 An exemplary network device 110 and a terminal device 120 are shown. Optionally, the communication system 100 may also include multiple network devices and / or multiple terminal devices.

[0041] The network equipment in this application can be network-side equipment such as access network equipment and core network equipment. Access network equipment is sometimes also called an access node. Access network equipment has wireless transceiver capabilities for communicating with terminals. Access network equipment includes, but is not limited to, base stations (BS), evolved NodeBs (eNodeBs), transmission reception points (TRPs) in the aforementioned communication systems, next-generation NodeBs (gNBs) in 5G mobile communication systems, access network equipment or modules of access network equipment in open RAN (ORAN) systems, satellites in NTN communication systems, base stations in future mobile communication systems, or access nodes in WiFi systems. Access network equipment can also be modules or units capable of implementing some of the functions of a base station. Access network equipment can be a macro base station (such as...). Figure 1 The access network device can be a micro base station or indoor station, a relay node or donor node, or a wireless controller in a cloud radio access network (CRAN) scenario. Optionally, the access network device can also be a server, wearable device, or vehicle-mounted device. For example, in vehicle-to-everything (V2X) technology, the access network device can be a roadside unit (RSU). Multiple access network devices in a communication system can be base stations of the same type or different types. Base stations can communicate with terminals directly or via relay stations. Terminals can communicate with multiple base stations using different access technologies. The embodiments of this application do not limit the specific technology or device form used in the access network device. In this application, the access network device is referred to as a network device.

[0042] In this application, the means for implementing the functions of a network device can be a network device itself, or a means capable of supporting the network device in implementing those functions, such as a processor, circuit, chip, or chip system. This means can be installed in or connected to the network device. In the technical solutions provided in this application, the example of a network device being used to implement the functions of a network device is used to describe the technical solutions provided in this application.

[0043] The terminal device in this application can be a wireless terminal device capable of receiving network device scheduling and instruction information. The wireless terminal device can be a device providing voice and / or data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem. For example, the terminal device can communicate with one or more core networks or the Internet via a radio access network (RAN). The terminal device can also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), ultra-reliable low-latency communication (URLLC), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, or satellite communication, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, aircraft (such as drone, helicopter, airplane), hot air balloon, ship, robot, robotic arm, or smart home device, etc. The embodiments of this application do not limit the form of the terminal device.

[0044] In this application, the apparatus for implementing the functions of a terminal device can be the terminal device itself, or any apparatus capable of supporting the terminal device in implementing those functions, such as a processor, circuit, chip, or chip system. This apparatus can be installed in or connected to the terminal device. In the technical solutions provided in this application, the example of a terminal device being used to implement the functions of a terminal device is used to describe the technical solutions provided in this application.

[0045] Access network equipment and / or terminal equipment can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water; or in the air on aircraft, balloons, and satellites. This application does not limit the application scenarios of the access network equipment and terminal equipment. They can be deployed in the same or different scenarios; for example, both can be deployed on land simultaneously; or the access network equipment can be deployed on land while the terminal equipment is deployed on water, etc., and so on.

[0046] In practical applications, multiple network devices can collaborate to assist terminals in achieving wireless access, with different network devices each implementing a portion of the base station's functions. For example, network devices can be central units (CUs), distributed units (DUs), CUs (control planes, CPs), CUs (user planes, UPs), or radio units (RUs), etc. CUs and DUs can be set up separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0047] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (Open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules. CU (or CU-CP and CU-UP), DU, and RU can implement different protocol layer functions.

[0048] To facilitate understanding of the embodiments of this application, the terminology used in this application will be briefly explained first. Optionally, the explanation of some terms may also refer to the explanations in the 3rd Generation Partnership Project (3GPP) standard protocol.

[0049] 1. Auxiliary Community

[0050] Within a master cell group (MCG), there may be many cells, one of which is used to initiate initial access. This cell is called the master cell, and it is the most "primary" cell in the MCG. The other cells are secondary cells. The master and secondary cells in an MCG are connected together using carrier aggregation (CA) technology. Secondary cell activation refers to providing additional downlink coverage or capacity support to user equipment outside of the master cell.

[0051] 2. Activation process of auxiliary cells

[0052] Activating a secondary cell involves the coordinated operation of multiple protocol layers. The specific steps are as follows:

[0053] (1) Configuration phase: When the network adds or modifies a SCell, it will configure the SCell parameters, such as physical layer configuration, through radio source control (RRC) messages. If the RRC configuration contains a secondary cell state (SCellState) field and the value is activated, the SCell will be in an activated state immediately after configuration, without the need to send an additional medium access control element (MACCE).

[0054] (2) Activation Execution: If activation is not performed directly via RRC, the network needs to send a secondary cell activation command (SCellActivation MAC CE). Upon receiving the command, the UE initiates the activation process according to the standard. Specifically, if the downlink bandwidth part (BWP) of the SCell is in a "dormant BWP", the UE needs to activate the corresponding normal BWP first (through DCI or RRC configuration) before it can listen to the physical downlink control channel (PDCCH), receive the physical downlink shared channel (PDSCH), and send SRS or send the physical uplink shared channel (PUSCH).

[0055] (3) Resource activation: After activation, the UE begins to perform the following operations on the SCell: listen to the PDCCH (including the SCell's own or associated PDCCH); receive PDSCH data transmission; perform channel state information (CSI) measurement; and transmit SRS, PUSCH or PUCCH on the uplink (if PUCCH resources are configured).

[0056] As can be seen from the above activation process, SRS transmission is only allowed after the secondary cell is activated, resulting in a delay in SRS acquisition by network devices. To shorten the SRS acquisition (base station acquisition) delay after SCell activation, relevant regulations explicitly require "using traditional SCell activation MAC CE to trigger early SRS / CSI / CSI-RS," among which "non-periodic antenna switching dedicated SRS (SRS for antenna switching, SRS-AS)" is the core requirement. That is, by obtaining the UE antenna switching status in advance, the base station can quickly generate an adapted closed-loop precoding, avoiding the "fallback transmission scheme" (no precoding, low modulation order) in the early stage of activation, and improving throughput. Among them, SRS-AS is a special configuration mode of SRS in 5G NR system. It is an uplink reference signal mechanism specifically used to realize the UE's multiple antennas taking turns to transmit, so that the base station can obtain more comprehensive uplink channel state information, thereby achieving more accurate beamforming and resource allocation. Currently, the traditional schemes for activating secondary cells mainly include the following two forms:

[0057] Option 1, traditional R15 activation, relies on SSB for synchronization. Specifically, the UE receives the SSB, completes time / frequency synchronization based on the SSB, and after the entire process including automatic gain control (AGC) calibration, the UE sends the SRS, which the base station can then use to obtain CSI. However, due to the long SSB cycle, the activation delay can reach 10-20 milliseconds, causing delays in the base station acquiring the SRS or CSI, resulting in initial throughput loss.

[0058] Option 2, R17 Enhanced Activation, introduces an aperiodic tracking reference signal (AP-TRS) or aperiodic CSI-RS. These auxiliary signals are directly triggered by the Enhanced SCell Activation MAC CE, helping the UE to quickly complete synchronization. That is, since the UE, after receiving the Enhanced SCell Activation MAC CE, does not need to wait for the periodic SSB, it can directly achieve time or frequency synchronization via AP-TRS, shortening the AGC calibration time and allowing the base station to acquire CSI or SRS as early as possible.

[0059] It should be understood that the technical terms used in this application are for illustrative purposes only and not as limiting. For example, as technology evolves, technical terms may also change, and other technical terms that have the same technical meaning should also apply to this application.

[0060] However, the current aperiodic SRS-AS triggering scheme based on activation commands has the following problem: It requires adding a new field to the secondary cell activation MAC CE, which associates one or more SRS resource sets. This allows the UE to determine the SRS resource set based on this new field after receiving the MAC CE and then send the SRS. In other words, the current scheme requires modifying the format of the secondary cell activation MAC CE, which may affect the UE's parsing of the secondary cell activation MAC CE.

[0061] To address the aforementioned issues, this application provides a secondary cell activation method. In this method, a first signaling instruction sent by a network device to a terminal device carries first indication information via a reserved bit. This first indication information instructs the terminal device to send a first probe reference signal to the network device. The first probe reference signal is used to determine uplink channel state information. Specifically, the first signaling instruction triggers the activation of the secondary cell. After receiving the first signaling instruction, the terminal device determines the transmission resources corresponding to the secondary cell from a pre-configured set of transmission resources based on the first indication information. These transmission resources guide the transmission of the first probe reference signal. Subsequently, the terminal device uses these transmission resources to send the first probe reference signal to the network device. In other words, the first indication information not only triggers the terminal device to send the first probe reference signal but also determines the transmission resources used to send the first probe reference signal. In short, the first indication information instructs the terminal device to send the first probe reference signal using preset transmission resources.

[0062] The solution provided in this application will be described in detail below with reference to the corresponding flowcharts. It is understood that the illustrative flowcharts provided in this application primarily use different devices (e.g., terminal devices, network devices) as examples of the execution subjects of this interactive illustration to illustrate the method, but this application does not limit the execution subjects of the interactive illustrations. For example, the devices (e.g., terminal devices, network devices) in the illustrative flowcharts can also be chips, chip systems, or processors that support the implementation of this method on the device, or logic modules or software that can implement all or part of the functions of the device.

[0063] As a general statement, the message or signaling interactions involved in the interaction process of this application embodiment can be standard messages or signaling or newly introduced messages or signaling. This application embodiment does not make specific limitations on this.

[0064] Figure 2 This is a schematic diagram of a secondary cell activation method according to an embodiment of this application. It can be understood that... Figure 2 The network devices in the middle can be Figure 1 The term "network device" can also refer to the components within a network device (such as processors, chips, or chip systems). Figure 2 The terminal device in the middle can be Figure 1 Any terminal device, or a component within a terminal device (such as a processor, chip, or chip system). Figure 2 As shown, the method includes the following steps:

[0065] S201: The network device sends a first signaling to the terminal device, and the terminal device receives the first signaling. The first signaling is used to trigger the activation of the secondary cell, and the reserved bits of the first signaling carry first indication information, which is used to instruct the terminal device to send a first probe reference signal to the network device.

[0066] In this embodiment, the network device determines whether a secondary cell needs to be activated based on the current needs of each terminal device connected to the primary cell and the service capabilities of the primary cell. After determining that the secondary cell needs to be activated, the network device sends a first signaling message to each terminal device in the primary cell. This first signaling message is used to trigger the activation of the secondary cell. The first signaling message may be a MAC CE.

[0067] To avoid modifying the first signaling and causing the terminal device to be unable to correctly parse it, in this embodiment, the network device carries first indication information through reserved bits in the first signaling. This first indication information not only instructs the terminal device to send a first probe reference signal to the network device, but also instructs the terminal device on which transmission resources to use to send the first probe signal. The first probe signal assists the network device in determining uplink channel state information.

[0068] S202: The terminal device determines the transmission resources corresponding to the secondary cell from a pre-configured set of transmission resources based on the first indication information. These transmission resources are used to guide the transmission of the first detection reference signal.

[0069] In this embodiment, after receiving the first signaling, the terminal device parses the first signaling to obtain first indication information, and then determines the transmission resources corresponding to the secondary cell to be activated from a pre-configured set of transmission resources based on the first indication information. That is, the first indication information is used not only to trigger the terminal device to send the first probe reference signal, but also to determine the transmission resources used to send the first probe reference signal.

[0070] Specifically, the transmission resources corresponding to the secondary cell can be determined in the following ways:

[0071] (1) The terminal device determines the activation template based on the first indication information and the first correspondence.

[0072] The first correspondence includes the correspondence between the first indication information and the activation template. The first indication information reflects the activation requirements, and different activation requirements correspond to different activation templates. The activation template includes the secondary cell identifier corresponding to the secondary cell to be activated and the resource template identifier corresponding to the secondary cell. The activation requirements are determined by the network equipment based on the service capabilities of the primary cell and the requirements of each terminal device within the primary cell.

[0073] In this embodiment, the network device pre-configures the correspondence between different activation requirements and activation templates to meet current service needs. For example, activation requirements include a small number of services requiring improved communication quality (referred to as small service improvement requirements, such as users browsing general-resolution videos or making / receiving video calls via terminal devices) and a large number of services requiring improved communication quality (referred to as large service improvement requirements, such as full-speed downloading of content, browsing high-definition videos, and live streaming). In the case of a small number of services, the corresponding activation template 1 includes secondary cells A and B to be activated, with resource template identifier T4 for secondary cell A and T3 for secondary cell B. In the case of a large number of services, the corresponding activation template 2 includes secondary cells A, B, C, and D to be activated, with resource template identifiers T2, T3, T3, and T4 for secondary cell A, B, C, and D respectively. Different resource template identifiers correspond to different transmission resources.

[0074] After the network device determines the correspondence between activation requirements and activation templates, it pre-sends the first correspondence to the terminal device before sending the first signaling. Specifically, the network device can pre-configure in the following ways:

[0075] A small number of business upgrade requests (watching standard resolution videos, making video calls)

[0076] SCell-SRS-TemplateBinding ::= SEQUENCE {

[0077] sCellIndex A auxiliary cell, B auxiliary cell

[0078] selectedTemplateId INTEGER T4 (corresponding to secondary cell A), T3 (corresponding to secondary cell B) ...

[0079] }

[0080] There is a significant demand for service upgrades (full-speed content downloads, high-definition video streaming, live broadcasts).

[0081] SCell-SRS-TemplateBinding ::= SEQUENCE {

[0082] sCellIndex A Auxiliary Cell, B Auxiliary Cell, C Auxiliary Cell, D Auxiliary Cell

[0083] selectedTemplateId INTEGER T2 (corresponding to secondary cell A), T2 (corresponding to secondary cell B), T3 (corresponding to secondary cell C), T4 (corresponding to secondary cell D) ...

[0084] }

[0085] In some implementations, when preset conditions are met, the terminal device sends a second signaling message to the network device. This second signaling message includes second indication information, which indicates the antenna transceiver capabilities (UE capabilities) supported by the terminal device. The preset conditions trigger the second signaling message sent by the terminal device. Upon receiving the second signaling message, the network device determines a first correspondence based on the second indication information and the characteristics of the secondary cell, and then sends a third signaling message to the terminal device, which includes the first correspondence.

[0086] Specifically, when a terminal device transitions from an idle state to a connected state, it can send an RRC Setup Request signaling message to the network device. This message includes a new field to carry second indication information, which can specifically be the antenna transmit / receive capabilities supported by the terminal device. For example, the second indication information could be represented as xTyR, where x represents the number of transmit ports and y represents the number of receive ports. When a terminal device transitions from an inactive state to a connected state, it can send an RRC Resume Request signaling message to the network device, also carrying the second indication information.

[0087] After receiving the second instruction information, the network device will determine the corresponding activation template for different activation requirements based on the antenna transceiver capabilities supported by the terminal device and the characteristics of the secondary cell. The characteristics of the secondary cell reflect its service capabilities and may specifically include one or more of the following: the channel quality of the secondary cell, the frequency band corresponding to the secondary cell, and the access capabilities of the secondary cell.

[0088] As can be seen, this scheme binds the secondary cell and the resource template in advance through RRC signaling before the secondary cell is activated. The UE stores the activation template locally. When the activation signaling is received, the UE does not need to wait for the network device to configure the resource template, but directly calls the pre-configured resource template, reducing the transmission latency of SRS-AS.

[0089] (2) For any secondary cell in the activation template, the terminal device determines the transmission resources corresponding to the secondary cell based on the resource template identifier corresponding to the secondary cell and the second correspondence relationship.

[0090] The second correspondence includes the correspondence between resource template identifiers and transmission resources. Transmission resources may include one or more of the following: transmit power, time-frequency location, frequency density, number of transmit and receive antennas, SRS-AS transmit bandwidth, and transmission timing. For example, Figure 3a The diagram shown illustrates the correspondence between resource template identifiers and transmission resources. Figure 3a The system includes six resource templates: T1, T2, T3, T4, T5, and T6. Each resource template corresponds to the number of transmit and receive antennas, transmit power, time-frequency position, frequency density, and transmission timing. The frequency density can be 1, 1 / 2, 1 / 4, or 1 / 8; the transmit power can range from -3dB to +3dB; and the transmission timing (T_offset) can be 1 to 3 time slots. The time-frequency position can be... Figure 3b Any one of the four position patterns shown, Figure 3b In the image, the gray box indicates the time-frequency position that is being used.

[0091] In this embodiment, after determining the resource template identifier corresponding to the secondary cell to be activated, the terminal device determines the transmission resources corresponding to the secondary cell through the resource template identifier and the second correspondence. The transmission resources corresponding to different resource template identifiers pre-stored on the terminal device side constitute a transmission resource set.

[0092] In some implementations, before the terminal device reports its supported antenna transceiver capabilities to the network device, a mapping relationship between resource template identifiers and transmission resources can be pre-issued to the terminal device. In this approach, the second mapping relationship is determined by the network device based on the time-frequency resource usage of the primary cell, the large-scale characteristics of the downlink channel of the primary cell, and the mobility characteristics of the terminal device. This method eliminates the need to configure all resource templates for the terminal device, instead configuring only a small number of resource templates, reducing signaling overhead. For example, if the network device has 64 sets of resource templates, this method only requires configuring 4-8 sets of resource templates for the terminal device. That is, the network device sends the second mapping relationship to the terminal device.

[0093] The large-scale characteristics of the downlink channel can include Doppler spread, Doppler frequency shift, average delay, and delay spread, all of which are known. In this implementation, the network device can send a second mapping relationship to the terminal device via system information blocks or dedicated RRC signaling (e.g., RRCSetup).

[0094] After receiving the UE capabilities reported by the terminal device, the network device can dynamically adjust the configured resource templates according to the UE capabilities, thereby avoiding capability mismatch problems caused by static binding. Specifically, the network device updates the second correspondence based on the second indication information to obtain the updated second correspondence.

[0095] For example, before acquiring UE capabilities, the network device configures four sets of resource templates T1, T2, T3, and T4 for the terminal device. Upon acquiring UE capabilities, the network device determines that templates T1 and T2 are the most suitable for the UE, thus achieving a match between the UE and its capabilities. This method not only ensures that the configured transmission resources match the UE capabilities but also reduces the amount of configuration and signaling overhead. Specifically, the network device updates the second correspondence based on the second indication information to obtain the updated second correspondence; the network device then sends a fourth signaling message to the terminal device, which includes the updated second correspondence. The updated second correspondence includes fewer resource template identifiers than the original second correspondence.

[0096] S203: The terminal device sends a first probe reference signal to the network device using transmission resources.

[0097] In this embodiment, after determining the transmission resources corresponding to the secondary cell to be activated, the terminal device sends a first probe reference signal to the network device using the transmission resources corresponding to the secondary cell. The first probe reference signal can be an SRS-AS signal.

[0098] Specifically, the terminal device determines the transmission time slot corresponding to the first probe reference signal; in the transmission time slot, the terminal device transmits the first probe reference signal using transmission resources. The transmission time slot is related to the time slot in which the terminal device receives the first signaling, the first time, and the secondary cell activation delay. The first time refers to the round-trip time of the hybrid retransmission request, and the secondary cell activation delay refers to the time required for the terminal device to complete the activation operation from receiving the first signaling.

[0099] The transmission time slot calculation rule can be: "Trigger time slot = Activation command reception time slot n + T_HARQ + T_activation_time + T_offset. For example, if the activation command reception time slot is n, T_HARQ = 3ms (corresponding to 3 time slots, 15kHz subcarrier spacing), T_activation_time = 5ms (corresponding to 5 time slots), and T_offset = 1 in the resource template, then the SRS-AS transmission time slot = n + 3 + 5 + 1 = n+9. The terminal device will then transmit aperiodic SRS-AS in time slot n+9 using the transmission resources."

[0100] In this embodiment, after receiving the first probe reference signal, the network device determines the uplink channel state information based on the first probe reference signal, and adjusts the transmission strategy accordingly based on the uplink channel state information to achieve better communication performance.

[0101] Specifically, the base station obtains uplink channel state information by parsing the SRS-AS. After obtaining this information, it immediately switches from "open-loop transmission (single stream, low rate)" to "closed-loop coding (multi-stream, high rate)" to reduce latency. The purpose of closed-loop coding is to ensure that the base station's transmitted signal accurately hits the UE. Specifically, the base station adjusts the beam shape and phase of the transmitted signal based on the uplink channel state information, focusing the signal onto the UE's receiving antenna, avoiding signal dispersion and waste, and significantly reducing signal loss.

[0102] In some scenarios, after obtaining uplink channel state information based on SRS-AS, the base station can infer downlink channel state information based on channel reciprocity.

[0103] As can be seen, this method can carry the first indication information through the reserved bits in the first signaling without modifying the first signaling, thus ensuring the correct parsing of the first signaling.

[0104] For a better understanding of the technical framework of the embodiments of this application, please refer to... Figure 4 The signaling interaction diagram shown is as follows: Figure 4 As shown:

[0105] S401: The base station configures transmission resources to the UE for SRS.

[0106] In this embodiment, the base station can configure 4-8 SRS resource set templates to the UE via system information or dedicated RRC signaling. The format of the SRS resource set template can be found in [reference needed]. Figure 3a .

[0107] S402: The UE reports its capabilities to the base station.

[0108] The implementation of UE reporting UE capabilities to the base station can reuse the traditional UE capability reporting framework. Specifically, if the UE enters the connected state from the idle state, "UE-SRS-AS-Capability" can be added to the RRCSetupRequest of MSG3 to indicate the supported xTyR type;

[0109] If a UE enters a connected state (primary cell) from an inactive state, it can report its capabilities in an RRCResumeRequest (if the UE context has not been lost, historical capabilities can be reused).

[0110] S403: Base station uses UE capabilities as a secondary cell binding resource template.

[0111] S404: The base station sends the first correspondence to the UE.

[0112] After obtaining UE capabilities, the base station can send the correspondence between the secondary cell and the resource set template through RRCReconfiguration signaling before activating the secondary cell.

[0113] S405: The base station sends an activation MAC CE to the UE, and the reserved bit of the MAC CE is 1.

[0114] In this embodiment, a reserved bit of 0 indicates that a small number of services improve communication quality, while a reserved bit of 1 indicates that a large number of services improve communication quality.

[0115] S406: The UE parses the MAC CE and determines the transmission resources based on the reserved bits.

[0116] In this embodiment, when the UE determines the reserved bit 1 of the MAC CE, it determines the activation template corresponding to the communication quality improvement requirements of a large number of services based on the first correspondence, and determines the transmission resources based on the resource template identifier of each secondary cell in the activation template and the second correspondence.

[0117] S407: The UE determines the transmission time slot based on transmission resources.

[0118] S408: During the transmission time slot, the UE uses transmission resources to send SRS-AS to the base station.

[0119] It should be noted that the specific implementation of each step in this embodiment can be found in [reference needed]. Figure 2 The relevant descriptions in the illustrated embodiments.

[0120] based on Figure 4 The behavior of the UE side in each time slot, such as Figure 5 As shown:

[0121] In time slot n, the UE receives the secondary cell activation MAC CE sent by the base station. The reserved bits in the secondary cell activation MAC CE carry first indication information, which reflects the activation requirement.

[0122] In time slot n+i, the UE sends a HARQ-ACK for the secondary cell activation MAC CE to inform the base station that the UE has successfully received the secondary cell activation MAC CE.

[0123] In time slots n+i to n+j, the UE receives TRS and SSB signals sent by the base station to achieve downlink synchronization of the secondary cell.

[0124] In time slot n+k, after downlink synchronization is completed, transmission resources are obtained based on the first indication information, and the non-periodic SRS-AS is sent to the base station using the transmission resources.

[0125] based on Figure 4 The behavior of the base station in each time slot, such as Figure 6 As shown:

[0126] In time slot n, the base station sends a secondary cell activation MAC CE to the UE (with reserved bits carrying the first indication information).

[0127] In time slot n+i, the base station receives the HARQ-ACK sent by the UE for the secondary cell activation MAC CE.

[0128] During time slots n+i to n+j, the base station sends TRS, SSB, and other signals to the UE.

[0129] In time slot n+k, the base station receives the SR-AS sent by the UE.

[0130] In time slots n+k to n+m, the base station determines the uplink CSI based on SRS-AS and obtains the downlink CSI through channel reciprocity, thereby adjusting the downlink service.

[0131] It should be noted that the protocol modifications involved in the technical solutions provided in this application include:

[0132] TS 38.331 (RRC Signalling): Added "SRS Resource Set Template Configuration" (SRS-ResourceSetTemplateConfig), which includes template ID, xTyR parameters, T_offset, etc.; added "SCell - Template Binding" (SCell-SRS-TemplateBinding), which is used for gNB to dynamically update binding relationships; added "UE-SRS-AS-Capability" to the RRCSetupRequest of MSG3, indicating the supported xTyR types.

[0133] TS 38.321 (MAC CE): Defines new semantics for reserved bits (R bits of Rel-17) in Rel-15 / 17 SCell activation MAC CE;

[0134] TS 38.213 (Timing): Clarifies the calculation rules for transmission time slots in aperiodic SRS-AS: "Trigger time slot = Activation command receive time slot n + T_HARQ + T_activation_time + T_offset".

[0135] Additionally, for legacy UEs (which do not support Rel-20 new features): when receiving the SCell activation command, the new semantics of the reserved bit are ignored (the reserved bit is set to 0 according to the traditional protocol), only the SCell activation process is executed, and SRS-AS is not triggered, which is fully compatible with the existing working mechanism;

[0136] For UEs that support Rel-20: the reserved bit semantics and dynamic binding relationship can be identified, triggering SRS-AS to achieve the coexistence of new features and legacy mechanisms.

[0137] Based on the above description, this embodiment overcomes the pain points of traditional solutions such as "low resource utilization, legacy compatibility conflicts, and high SCell activation latency" by using "UE capabilities + dynamic matching of resource set templates + legacy signaling multiplexing + pre-binding and pre-configuration". Specifically, it can include the following advantages:

[0138] (1) Based on the UE's reported capabilities (such as 1T2R / 2T2R / 2T4R), the corresponding resource set template (T1-T3) is dynamically matched to avoid the capability mismatch problem caused by the traditional static binding of "one template to adapt to all UEs", thus improving resource utilization.

[0139] (2) Before SCell activation, the binding relationship configuration of "SCell - Resource Set Template" is completed in advance through RRC signaling, and the UE stores it locally after receiving it. When the SCell activation command arrives, the UE does not need to wait for the new configuration and directly calls the bound template parameters to transmit SRS-AS.

[0140] (3) The reserved bit (R bit) of MAC CE is activated by Rel-17 SCell to indicate SRS-AS triggering without modifying the MAC CE format; the binding relationship is updated by RRCReconfiguration signaling without adding a new independent signaling type.

[0141] (4) Reduced CSI acquisition latency. Based on Rel-17 T_activation_time=5ms, SRS-AS transmission can be advanced to 8-10ms after the activation command is received (T_HARQ=3ms + T_activation_time=5ms + T_offset=0-2ms). The CSI acquisition latency is reduced by more than 50% compared with the traditional solution, thereby improving downlink throughput.

[0142] (5) Low industrialization cost: The UE side only needs to upgrade the "capability parsing - template matching" logic in the software, without the need for hardware changes, and is easy to implement.

[0143] It should be understood that Figures 1 to 6 The flowcharts or scene diagrams shown are for illustrative purposes only and are not intended to limit the embodiments of this application to the examples illustrated. In fact, those skilled in the art can interpret the embodiments based on... Figures 1 to 6 The examples in the document can be transformed into equivalent ways to obtain more implementations.

[0144] The above text combined Figures 1 to 6 This document describes in detail the communication method provided in the embodiments of this application. The following will combine... Figures 7 to 8 The device embodiments of this application are described in detail below. It should be understood that the communication device of this application embodiment can execute the various communication methods of the foregoing embodiments of this application, that is, the specific working processes of the various products below can be referred to the corresponding processes in the foregoing method embodiments.

[0145] In the embodiments described above, the terminal device may execute some or all of the steps in each embodiment; the network device may execute some or all of the steps in each embodiment. These steps or operations are merely examples, and the embodiments of this application may also perform other operations or variations thereof. Furthermore, the steps may be executed in different orders as presented in the embodiments, and it is not necessary to execute all the operations in the embodiments of this application. Moreover, the sequence number of each step does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0146] Figure 7 This is a schematic block diagram of a communication device provided in an embodiment of this application. Figure 7 As shown, the communication device 700 may include a communication module 720. The communication module 720 can implement corresponding communication functions, which can be internal communication functions of the communication device 700 or communication functions between the communication device 700 and other devices. Optionally, the communication module 720 may also be referred to as a communication interface or transceiver module. Optionally, the communication device 700 further includes a processing module 710. The processing module 710 can implement corresponding processing functions.

[0147] Optionally, the communication device 700 further includes a storage module, which can be used to store instructions and / or data; the processing module 710 can read the instructions and / or data in the storage module so that the communication device 700 can implement the aforementioned method embodiments.

[0148] In one possible design, the communication device 700 may correspond to the terminal device in the above method embodiments, or to a component (such as a circuit, chip, or chip system) configured in the terminal device. The communication device 700 can be used to perform the steps or processes performed by the terminal device in any of the above method embodiments.

[0149] For example, the communication module 720 is used to receive a first signaling sent by the network device, the first signaling being used to trigger the activation of the secondary cell, and the reserved bits in the first signaling carrying first indication information, the first indication information being used to instruct the terminal device to send a first probe reference signal to the network device, the first probe reference signal being used to determine uplink channel state information;

[0150] The processing module 710 is used to determine the transmission resources corresponding to the secondary cell from a pre-configured set of transmission resources based on the first indication information. These transmission resources are used to guide the transmission of the first detection reference signal.

[0151] The communication module 720 is also used to send a first probe reference signal to the network device using transmission resources.

[0152] In some implementations, the processing module 710 is specifically used to determine an activation template based on first indication information and a first correspondence. The activation template includes a secondary cell identifier corresponding to the secondary cell to be activated and a resource template identifier corresponding to the secondary cell. The first correspondence includes the correspondence between the first indication information and the activation template. The first indication information reflects activation requirements, and different activation requirements correspond to different activation templates. The activation requirements are determined by the network device based on the service capabilities of the primary cell and the requirements of each terminal device in the primary cell. The processing module 710 also determines the transmission resources corresponding to the secondary cell based on the resource template identifier corresponding to the secondary cell and a second correspondence. The second correspondence includes the resource template identifier and the transmission resources.

[0153] In some embodiments, before receiving the first signaling sent by the network device, the communication module 720 is further configured to send a second signaling to the network device under preset conditions. The second signaling includes second indication information indicating the antenna transceiver capability of the terminal device. The preset conditions are used to trigger the terminal device to send the second signaling. The communication module 720 also receives a third signaling sent by the network device. The third signaling includes a first correspondence relationship, which is determined by the network device based on the second indication information and the characteristics of the secondary cell.

[0154] In some implementations, the features of a secondary cell include one or more of the following: the channel quality of the secondary cell, the frequency band corresponding to the secondary cell, and the access capability of the secondary cell.

[0155] In some implementations, before receiving the first signaling sent by the network device, the communication module 720 is also used to receive a second correspondence sent by the network device. The second correspondence is determined by the network device based on the time-frequency resource usage of the main cell, the large-scale characteristics of the downlink channel of the main cell, and the mobility characteristics of the terminal device.

[0156] In some embodiments, the communication module 720 is further configured to send a second signaling message to the network device when a preset condition is met. The second signaling message includes second indication information, which indicates the antenna transceiver capability of the terminal device. The preset condition is used to trigger the terminal device to send the second signaling message. The communication module 720 also receives a fourth signaling message sent by the network device. The fourth signaling message includes an updated second correspondence relationship. The resource template identifiers included in the updated second correspondence relationship are determined by the network device based on the second indication information, and the number of resource template identifiers included in the updated second correspondence relationship is less than the number of resource template identifiers included in the previous second correspondence relationship.

[0157] In some implementations, the communication module 720 is specifically used to determine the transmission time slot corresponding to the first probe reference signal; and in the transmission time slot, to transmit the first probe reference signal using transmission resources.

[0158] In some implementations, transmission resources include one or more of the following: transmit power, time-frequency location, frequency density, and number of transmit and receive antennas.

[0159] The above are merely examples; for detailed steps or procedures, please refer to the descriptions in the foregoing embodiments.

[0160] In one possible design, the communication device 700 may correspond to the network device in the above method embodiments, or to a component (such as a circuit, chip, or chip system) configured in the network device. The communication device 700 can be used to perform the steps or processes performed by the network device in any of the above method embodiments.

[0161] For example, the communication module 720 is used to send a first signaling to the terminal device, the first signaling being used to trigger the activation of the secondary cell, and the reserved bits in the first signaling carrying first indication information, the first indication information being used to instruct the terminal device to send a first probe signal to the network device, the first probe signal being used to determine uplink channel state information;

[0162] The communication module 720 is also used to receive a first probe reference signal sent by the terminal device using preset transmission resources, wherein the transmission resources are determined by the terminal device from a pre-configured set of transmission resources based on first indication information.

[0163] In some implementations, transmission resources are determined by the terminal device based on the resource template identifier corresponding to the secondary cell and a second correspondence. The second correspondence includes the resource template identifier and transmission resources. The resource template identifier is determined by the terminal device based on first indication information and the first correspondence. The first correspondence includes the correspondence between the first indication information and the activation template. The activation template includes the secondary cell identifier corresponding to the secondary cell to be activated and the resource template identifier corresponding to the secondary cell. The first indication information reflects activation requirements; different activation requirements correspond to different activation templates. These activation requirements are determined by the network device based on the service capabilities of the primary cell and the requirements of each terminal device in the primary cell.

[0164] In some embodiments, before sending the first signaling to the terminal device, the communication module 720 is also used to receive a second signaling sent by the terminal device, the second signaling including second indication information indicating the antenna transceiver capabilities supported by the terminal device.

[0165] Processing module 710 is used to determine the first correspondence based on the second indication information and the characteristics of the secondary cell;

[0166] The communication module 720 is also used to send a third signaling message to the terminal device, the third signaling message including the first correspondence.

[0167] In some implementations, the features of the secondary cell include one or more of the following: the channel quality of the secondary cell, the frequency band corresponding to the secondary cell, and the access capabilities of the secondary cell.

[0168] In some implementations, the communication module 720 is further configured to send a second correspondence to the terminal device before sending the first signaling to the terminal device. The second correspondence is determined by the network device based on the time-frequency resource usage of the primary cell, the large-scale characteristics of the downlink channel of the primary cell, and the mobility characteristics of the terminal device.

[0169] In some embodiments, the communication module 720 is further configured to receive a second signaling sent by the terminal device, the second signaling including second indication information indicating the antenna transceiver capabilities supported by the terminal device;

[0170] The processing module 710 is used to update the second correspondence based on the second indication information to obtain the updated second correspondence.

[0171] The communication module 720 is also used to send a fourth signaling message to the terminal device, the fourth signaling message including the updated second correspondence. The updated second correspondence includes fewer resource template identifiers than the original second correspondence.

[0172] In some implementations, transmission resources include one or more of the following: transmit power, time-frequency location, frequency density, and number of transmit and receive antennas.

[0173] The above are merely examples; for detailed steps or procedures, please refer to the descriptions in the foregoing embodiments.

[0174] Figure 8 This is another schematic block diagram of the communication device 800 provided in the embodiments of this application. The communication device 800 may be a chip, chip system, or processor, etc., in a terminal device or network device that implements the above-described methods. The communication device 800 can be used to implement the methods described in the above-described method embodiments; for details, please refer to the descriptions in the above-described method embodiments.

[0175] like Figure 8 As shown, the communication device 800 may include one or more processors 810, which may also be referred to as processing units or processing modules, and can implement certain control functions. The processor 810 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, while the central processing unit can be used to control the communication device 800 (e.g., a base station, baseband chip, user, user chip), execute software programs, and process data from the software programs.

[0176] In an alternative design, the processor 810 may also store instructions and / or data that can be executed by the processor 810 to cause the communication device 800 to perform the methods described in the above method embodiments.

[0177] In another alternative design, the communication device 800 may include a communication interface 820 for implementing receiving and transmitting functions. For example, the communication interface 820 may be a transceiver circuit, interface, interface circuit, or transceiver. The transceiver circuit, interface, interface circuit, or transceiver for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, interface circuit, or transceiver may be used for reading and writing code / data, or it may be used for transmitting or relaying signals.

[0178] Optionally, the communication device 800 may include one or more memories 830, which may store instructions that can be executed on the processor 810, causing the communication device 800 to perform the methods described in the above method embodiments. Optionally, the memories 830 may also store data. Optionally, the processor 810 may also store instructions and / or data. The processor 810 and the memories 830 may be provided separately or integrated together.

[0179] It should be understood that, in one possible design, the steps in the method embodiments provided in this application can be implemented by integrated logic circuits in the processor's hardware or by instructions in software form. The steps of the methods disclosed in the embodiments of this application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are not provided here.

[0180] In one implementation, the communication device 800 may correspond to the terminal device in the above method embodiments and may be used to execute the various steps and / or processes executed by the terminal device in the above method embodiments. The processor 810 may be used to execute instructions stored in the memory 830, and when the processor 810 executes the instructions stored in the memory, the processor 810 is used to execute the various steps and / or processes of the above method embodiments corresponding to the terminal device.

[0181] In another implementation, the communication device 800 may correspond to the network device in the above method embodiments and may be used to execute the various steps and / or processes executed by the network device in the above method embodiments. The processor 810 may be used to execute instructions stored in the memory 830, and when the processor 810 executes the instructions stored in the memory, the processor 810 is used to execute the various steps and / or processes of the above method embodiments corresponding to the network device.

[0182] It should be understood that the aforementioned processing device can be one or more chips. For example, the processing device can be a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system-on-chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0183] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0184] According to the method provided in the embodiments of this application, this application also provides a chip system, which includes one or more processors for calling and executing instructions stored in memory, thereby causing the method described in the embodiments of this application to be executed. The chip system may be composed of chips or may include chips and other discrete devices.

[0185] The chip system may include input circuits or interfaces for transmitting information or data, and output circuits or interfaces for receiving information or data.

[0186] According to the method provided in the embodiments of this application, this application also provides a communication system, which includes the aforementioned network device and terminal device.

[0187] According to the method provided in the embodiments of this application, this application also provides a computer program product, which includes: computer program code, which, when run on a computer, causes the computer to execute the various steps or processes executed by the network device or terminal device in any of the foregoing method embodiments.

[0188] According to the method provided in the embodiments of this application, this application also provides a computer-readable storage medium storing program code, which, when run on a computer, causes the computer to execute the various steps or processes executed by the network device or terminal device in any of the foregoing method embodiments.

[0189] The computer-readable storage medium may be the aforementioned volatile memory or non-volatile memory, or it may include both volatile memory and non-volatile memory.

[0190] In the embodiments of this application, the terms and English abbreviations are exemplary examples given for ease of description and should not be construed as limiting the application in any way. This application does not preclude the possibility of defining other terms that can achieve the same or similar functions in existing or future agreements.

[0191] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When these computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated.

[0192] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0193] It should be understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0194] In summary, the above description is merely a preferred embodiment of the technical solution of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for activating a secondary cell, characterized in that, The method includes: The terminal device receives a first signaling sent by the network device. The first signaling is used to trigger the activation of the secondary cell. The reserved bits in the first signaling carry first indication information. The first indication information is used to instruct the terminal device to send a first probe reference signal to the network device. The first probe reference signal is used to determine uplink channel state information. The terminal device determines an activation template based on the first indication information and the first correspondence. The activation template includes the secondary cell identifier corresponding to the secondary cell to be activated and the resource template identifier corresponding to the secondary cell. The first correspondence includes the correspondence between the first indication information and the activation template. The first indication information reflects the activation requirements, and different activation requirements correspond to different activation templates. For any secondary cell in the activation template, the terminal device determines the transmission resources corresponding to the secondary cell based on the resource template identifier corresponding to the secondary cell and the second correspondence relationship. The second correspondence relationship includes the resource template identifier and the transmission resources. The second correspondence relationship is determined by the network device based on the time-frequency resource usage of the primary cell, the large-scale characteristics of the downlink channel of the primary cell, and the mobility characteristics of the terminal device. The terminal device uses the transmission resources to send the first detection reference signal to the network device.

2. The method according to claim 1, characterized in that, Before the terminal device receives the first signaling sent by the network device, the method further includes: Under the condition that a preset condition is met, the terminal device sends a second signaling message to the network device. The second signaling message includes second indication information, which indicates the antenna transceiver capability supported by the terminal device. The preset condition is used to trigger the terminal device to send the second signaling message. The terminal device receives a third signaling sent by the network device. The third signaling includes the first correspondence, which is determined by the network device based on the second indication information and the characteristics of the secondary cell.

3. The method according to claim 2, characterized in that, The features of the secondary cell include one or more of the following: the channel quality of the secondary cell, the frequency band corresponding to the secondary cell, and the access capability of the secondary cell.

4. The method according to claim 1, characterized in that, Before the terminal device receives the first signaling sent by the network device, the method further includes: The terminal device receives the second correspondence sent by the network device.

5. The method according to claim 4, characterized in that, The method further includes: Under the condition that a preset condition is met, the terminal device sends a second signaling message to the network device. The second signaling message includes second indication information, which indicates the antenna transceiver capability supported by the terminal device. The preset condition is used to trigger the terminal device to send the second signaling message. The terminal device receives a fourth signaling message sent by the network device. The fourth signaling message includes an updated second correspondence. The resource template identifiers included in the updated second correspondence are determined by the network device based on the second indication information. The number of resource template identifiers included in the updated second correspondence is less than the number of resource template identifiers included in the original second correspondence.

6. The method according to claim 1, characterized in that, The terminal device uses the transmission resources to send the first probe reference signal to the network device, including: The terminal device determines the transmission time slot corresponding to the first detection reference signal; The terminal device transmits the first detection reference signal using the transmission resources during the transmission time slot.

7. The method according to any one of claims 1-6, characterized in that, The transmission resources include one or more of the following: transmission power, time-frequency location, frequency density, and number of transceiver antennas.

8. A method for activating a secondary cell, characterized in that, The method includes: The network device sends a first signaling to the terminal device. The first signaling is used to trigger the activation of the secondary cell. The reserved bits in the first signaling carry first indication information. The first indication information is used to instruct the terminal device to send a first probe reference signal to the network device. The first probe reference signal is used to determine uplink channel state information. The network device receives the first probe reference signal sent by the terminal device using preset transmission resources, wherein the transmission resources are determined by the terminal device from a pre-configured set of transmission resources based on the first indication information. The transmission resources are determined by the terminal device based on the resource template identifier corresponding to the secondary cell and the second correspondence relationship. The second correspondence relationship includes the resource template identifier and the transmission resources. The resource template identifier is included in the activation template. The activation template includes the secondary cell identifier corresponding to the secondary cell and the resource template identifier corresponding to the secondary cell. The activation template is determined by the terminal device based on the first indication information and the first correspondence relationship. The first correspondence relationship includes the correspondence between the first indication information and the activation template. The first indication information reflects the activation requirements. Different activation requirements correspond to different activation templates. The second correspondence relationship is determined by the network device based on the time-frequency resource usage of the primary cell, the large-scale characteristics of the downlink channel of the primary cell, and the mobility characteristics of the terminal device.

9. The method according to claim 8, characterized in that, Before the network device sends the first signaling to the terminal device, the method further includes: The network device receives a second signaling sent by the terminal device, the second signaling including second indication information, the second indication information indicating the antenna transceiver capabilities supported by the terminal device; The network device determines the first correspondence based on the second indication information and the characteristics of the secondary cell; The network device sends a third signaling message to the terminal device, the third signaling message including the first correspondence.

10. The method according to claim 9, characterized in that, The features of the secondary cell include one or more of the following: the channel quality of the secondary cell, the frequency band corresponding to the secondary cell, and the access capabilities of the secondary cell.

11. The method according to claim 8, characterized in that, Before the network device sends the first signaling to the terminal device, the method further includes: The network device sends the second correspondence to the terminal device.

12. The method according to claim 11, characterized in that, The method further includes: The network device receives a second signaling sent by the terminal device, the second signaling including second indication information, the second indication information indicating the antenna transceiver capabilities supported by the terminal device; The network device updates the second correspondence based on the second indication information to obtain the updated second correspondence. The network device sends a fourth signaling message to the terminal device. The fourth signaling message includes the updated second correspondence, and the updated second correspondence includes fewer resource template identifiers than the original second correspondence.

13. The method according to any one of claims 8-12, characterized in that, The transmission resources include one or more of the following: transmission power, time-frequency location, frequency density, and number of transceiver antennas.

14. A communication device, characterized in that, The device includes at least one processor coupled to a memory storing a program or instructions, the processor executing the program or instructions to cause the device to perform the method as described in any one of claims 1 to 13.

15. A communication system, characterized in that, Includes the communication device as described in claim 14.

16. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed, they cause the computer to perform the method as described in any one of claims 1 to 13.

17. A chip system comprising one or more processors, the one or more processors being configured to retrieve and execute instructions stored in memory, such that the method of any one of claims 1 to 13 is performed.

Images