Secondary cell activation method and communication device

Abstract

Provided are a secondary cell activation method and a communication device, the method comprising: a terminal device receiving first information from a network device, the first information indicating an initial position of a reference signal burst of a secondary cell and an interval between two adjacent reference signal bursts; further, the terminal device receives a reference signal burst from the secondary cell according to the initial position and the interval, and performs automatic gain control setting or cell search or layer 1 reference signal received power measurement according to the reference signal burst. Through the method, the period of the reference signal burst set can be determined according to the interval of the reference signal burst indicated by the first information, which is beneficial to improving the flexibility of the period of the reference signal burst set, thereby being beneficial to shortening the time delay of activating the secondary cell by the terminal equipment.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a secondary cell activation method and a communication device. Background Art

[0002] After the secondary cell (SCell) is configured, the terminal device needs to activate the SCell according to the instructions of the network device before it can transmit signals through the resources of the secondary cell. The process of activating the SCell includes the process of determining the optimal transmit and receive beam pair for communication between the terminal device and the SCell, which is based on the synchronization signal and physical broadcast channel block (SSB). In this process, the terminal device needs to perform two automatic gain control settling (AGC settling), one cell search (cell search) and one layer 1 reference signal received power measurement (layer 1 reference signal received power measurement, L1-RSRP measurement) in each receiving beam direction.

[0003] Usually, during the activation process, the SSB period is 20ms, and the terminal device can perform one AGC settling or one cell search or one L1-RSRP measurement for one receive beam in each SSB period. That is, when the terminal device has 8 receive beams, the terminal device needs 32 (i.e., 4 times the number of receive beams) SSB periods, i.e., 640ms, to perform two AGC settlings, one cell search, and one L1-RSRP measurement during the activation process. It can be seen that a large delay will be generated during the activation of the SCell. Summary of the invention

[0004] The embodiments of the present application provide a secondary cell activation method and a communication device, which are beneficial to improving the flexibility of the period of the reference signal burst set, thereby facilitating reducing the delay of terminal equipment in activating the secondary cell.

[0005] In the first aspect, the present application provides a secondary cell activation method. Taking a terminal device executing the method as an example, the method includes: the terminal device receives first information from a network device, and the first information indicates a starting position of a reference signal burst of the secondary cell and an interval between two adjacent reference signal bursts; further, the terminal device receives a reference signal burst from the secondary cell according to the starting position and the interval, and performs automatic gain control setting, cell search, or layer 1 reference signal receiving power measurement according to the reference signal burst.

[0006] In the method described in the first aspect, the first information affects the period of the reference signal burst set by indicating the interval between two adjacent reference signal bursts, thereby improving the flexibility of the period of the reference signal burst set. The method of receiving reference signal bursts according to a flexible period, performing automatic gain control settings or performing cell searches or performing layer 1 reference signal received power measurements is conducive to reducing the delay of terminal equipment in activating a secondary cell, compared with the method of receiving SSB according to a fixed period, performing automatic gain control settings or performing cell searches or performing layer 1 reference signal received power measurements.

[0007] In one possible implementation, the reference signal burst includes a signal consisting of a first signal and a first channel, the first signal is used for synchronization, and the first channel is used to carry frame indication information and index value information; wherein the frame indication information is used to indicate the position of the reference signal burst in the corresponding frame, and the index value information is used to indicate the position of the reference signal burst within the reference signal burst set to which it belongs.

[0008] In a possible implementation, the aforementioned first signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS, and the aforementioned first channel is a physical broadcast channel PBCH.

[0009] In a possible implementation, the first signal is a signal generated based on an m-sequence, and the first channel is a physical downlink control channel PDCCH.

[0010] In a possible implementation manner, the terminal device receives second information from the network device, where the second information indicates the number of reference signal bursts included in the reference signal burst set.

[0011] In a possible implementation manner, the terminal device receives third information from the network device, where the third information indicates the number of reference signal burst sets.

[0012] In a possible implementation, the number of reference signal bursts in a reference signal burst set is determined according to the number of receive beams of the terminal device.

[0013] In a possible implementation, the terminal device receives fourth information from the network device, where the fourth information is used to indicate a transmission mode of reference signal bursts within a same reference signal burst set, where the transmission mode is repeated transmission or non-repeated transmission.

[0014] In the second aspect, the present application provides a secondary cell activation method. Taking a network device executing the method as an example, the method includes: the network device sends first information to a terminal device, and the first information indicates the starting position of a reference signal burst of the secondary cell and the interval between two adjacent reference signal bursts; further, the network device sends a reference signal burst to the terminal device through the secondary cell according to the starting position and the interval.

[0015] In the method described in the second aspect, the first information affects the period of the reference signal burst set by indicating the interval between two adjacent reference signal bursts, thereby improving the flexibility of the period of the reference signal burst set. The method of receiving reference signal bursts according to a flexible period, performing automatic gain control settings or performing cell searches or performing layer 1 reference signal received power measurements is conducive to reducing the delay of activating the secondary cell compared to the method of receiving SSB according to a fixed period, performing automatic gain control settings or performing cell searches or performing layer 1 reference signal received power measurements.

[0016] In one possible implementation, the reference signal burst includes a signal consisting of a first signal and a first channel, the first signal is used for synchronization, and the first channel is used to carry frame indication information and index value information; wherein the frame indication information is used to indicate the position of the reference signal burst in the corresponding frame, and the index value information is used to indicate the position of the reference signal burst within the reference signal burst set to which it belongs.

[0017] In a possible implementation, the aforementioned first signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS, and the aforementioned first channel is a physical broadcast channel PBCH.

[0018] In a possible implementation, the first signal is a signal generated based on an m-sequence, and the first channel is a physical downlink control channel PDCCH.

[0019] In a possible implementation manner, the network device sends second information to the terminal device, where the second information indicates the number of reference signal bursts included in the reference signal burst set.

[0020] In a possible implementation manner, the terminal device receives third information from the network device, where the third information indicates the number of reference signal burst sets.

[0021] In a possible implementation, the number of reference signal bursts in a reference signal burst set is determined according to the number of receive beams of the terminal device.

[0022] In a possible implementation, the network device sends fourth information to the terminal device, where the fourth information is used to indicate a sending mode of reference signal bursts within the same reference signal burst set, where the sending mode is repeated sending or non-repeated sending.

[0023] In a third aspect, the present application provides a communication device, which may be a terminal device, or a device in a terminal device, or a device that can be used in combination with a terminal device. The communication device may also be a chip system. The communication device may execute the method described in the first aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the method and beneficial effects described in the first aspect above.

[0024] In a fourth aspect, the present application provides a communication device, which may be a network device, or a device in a network device, or a device that can be used in combination with a network device. The communication device may also be a chip system. The communication device may execute the method described in the second aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the method and beneficial effects described in the second aspect above.

[0025] In a fifth aspect, the present application provides a communication device, comprising a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method described in the first aspect through a logic circuit or by executing code instructions, or the processor is used to implement the method described in the second aspect through a logic circuit or by executing code instructions.

[0026] In a sixth aspect, the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed by a communication device, the method described in the first aspect is implemented, or the method described in the second aspect is implemented.

[0027] In a seventh aspect, the present application provides a computer program product comprising instructions, which, when a communication device reads and executes the instructions, causes the communication device to execute the method as described in the first aspect, or causes the communication device to execute the method as described in the second aspect.

[0028] In an eighth aspect, the present application provides a communication system, comprising a communication device for executing the method described in the first aspect above, and a communication device for executing the method executed by the network device described in the second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of carrier aggregation provided in an embodiment of the present application;

[0031] Figure 3 is a schematic diagram of a beam management process provided by an embodiment of the present application;

[0032] Figure 4 is a schematic diagram of a structure of a reference signal burst provided in an embodiment of the present application;

[0033] Figure 5 is a schematic diagram of the structure of another reference signal burst provided in an embodiment of the present application;

[0034] Figure 6 It is a flowchart of a method for activating a secondary cell provided in an embodiment of the present application;

[0035] Figure 7 is a schematic diagram of a reference signal burst pattern provided in an embodiment of the present application;

[0036] Figure 8 is a schematic diagram of another reference signal burst pattern provided in an embodiment of the present application;

[0037] Fig. 9 is a structural diagram of a communication device provided in an embodiment of the present application;

[0038] Fig.10 It is a structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It should be understood that the embodiments described herein may be combined with other embodiments.

[0041] In order to facilitate a specific understanding of the embodiments of the present application, the system architecture involved in the embodiments of the present application is first introduced below.

[0042] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as Figure 1 110a and 110b in the figure, collectively referred to as 110), and may also include at least one terminal (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 (not shown in the figure). The terminal 120 is connected to the RAN node 110 by wireless means, and the RAN node 110 is connected to the core network 200 by wireless or wired means. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be independent and different physical devices, or the same physical device that integrates the logical functions of the core network device and the logical functions of the RAN node. Terminals and terminals and RAN nodes and RAN nodes can be connected to each other by wire or wireless means. It should be noted that the RAN node 110 may also be referred to as the network device 110 in the following text.

[0043] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, and a future radio access system defined in the 3rd generation partnership project (3GPP). RAN100 may also include two or more of the above-mentioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0044] RAN nodes, also known as radio access network equipment, RAN entities or access nodes, are used to help terminals access the communication system wirelessly. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a fifth generation (5G) mobile communication system, a next generation NodeB in a sixth generation (6G) mobile communication system, or a base station in a future mobile communication system. A RAN node can be a macro base station (such as a Figure 1 110a), or a micro base station or an indoor station (such as Figure 1 110b) in the figure, it can also be a relay node or a donor node.

[0045] In another application scenario, the cooperation of multiple RAN nodes can be used to help the terminal achieve wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU) or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned various protocol layers, please refer to the relevant technical specifications of 3GPP. RU can be used to implement the transceiver function of radio frequency signals. CU and DU can be two independent RAN nodes, or they can be integrated in the same RAN node, such as integrated in a baseband unit (BBU). RU can be included in a radio frequency device, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0046] In different systems, RAN nodes may have different names. For example, in an O-RAN system, CU may be called an open CU (open CU, O-CU), DU may be called an open DU (open DU, O-DU), and RU may be called an open RU (open RU, O-RU). The RAN node in the embodiment of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with a corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For the convenience of description, the following description takes a base station as an example of a RAN node.

[0047] A terminal is a device with wireless transceiver function, which can send signals to a base station or receive signals from a base station. A terminal can also be called a terminal device, user equipment (UE), a mobile station, a mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0048] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0049] The roles of the base station and the terminal can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0050] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0051] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0052] In this application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0053] In the embodiments of the present application, the time domain symbol may be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete Fourier transform spread OFDM (DFT-s-OFDM) symbol. Unless otherwise specified, the symbols in the embodiments of the present application refer to time domain symbols.

[0054] In order to facilitate understanding of the relevant contents of the embodiments of the present application, some of the terms involved in the embodiments of the present application are explained below. This part is only for ease of understanding and cannot be regarded as a disclosure or specific limitation of the technical solution of the present application.

[0055] 1. Beam

[0056] The embodiment of beam in NR protocol can be spatial filter or spatial parameters. The beam used to send signals can be called transmission beam (Txbeam), which can be called spatial transmission filter or spatial transmission parameter; the beam used to receive signals can be called reception beam (Rx beam), which can be called spatial reception filter or spatial reception parameter.

[0057] The transmit beam may refer to the distribution of signal strength in different directions of space after the signal is transmitted by the antenna, and the receive beam may refer to the distribution of signal strength in different directions of space of the wireless signal received from the antenna.

[0058] It should be understood that the embodiment of beams in the NR protocol listed above is only an example and should not constitute any limitation to this application. This application does not exclude the possibility of defining other terms in other protocols to express the same or similar meanings.

[0059] In addition, the beam may be a wide beam, a narrow beam, or other types of beams. The technology for forming the beam may be a beamforming technology or other technologies. The beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital / analog beamforming technology. Different beams may be considered to correspond to different resources. The same information or different information may be sent through different beams.

[0060] Optionally, multiple beams with the same or similar communication characteristics are regarded as one beam. One beam may include one or more antenna ports for transmitting data, control signaling or detection signals, etc. One or more antenna ports forming a beam may also be regarded as an antenna port set.

[0061] 2. Cell

[0062] The cell is described at a high level from the perspective of resource management, mobility management or service unit. The coverage of each network device can be divided into one or more cells, and the cell can be regarded as consisting of certain frequency domain resources.

[0063] It should be noted that the cell can be an area within the coverage range of the wireless network of the network device. In an embodiment of the present application, different cells can correspond to different network devices. For example, the network device in cell #1 and the network device in cell #2 can be different network devices, such as a base station. That is to say, cell #1 and cell #2 can be managed by different base stations. In this case, it can be said that cell #1 and cell #2 do not share a station, or in other words, different stations. The network device in cell #1 and the network device in cell #2 can also be different radio frequency processing units of the same base station, for example, RRU, that is, cell #1 and cell #2 can be managed by the same base station, have the same baseband processing unit and intermediate frequency processing unit, but have different radio frequency processing units. This application does not specifically limit this.

[0064] According to the frequency band range where the cell is located (or understood to be corresponding), the cell in the range of 450MHz-6000MHz can be called a cell in (frequency range, FR)1 or a low-frequency cell, and the cell in the range of 24250MHz-52600MHz can be called a cell in FR2 or a high-frequency cell. It should be noted that in this application, the meaning of the cell and the carrier are not distinguished, that is, the cell and the carrier can be regarded as representing the same thing, or it can be understood that the cell and the carrier are in a one-to-one correspondence. In other words, the frequency band range where the cell is located can be understood as the frequency band range where the frequency of the cell corresponding to the carrier is located, and it can also be called the working frequency band of the cell or the frequency band where the cell is located.

[0065] 3. Carrier aggregation (CA)

[0066] See also Figure 2 As shown in the figure, CA technology is a technology that aggregates two or more component carriers (CCs) to support a larger transmission bandwidth. In other words, CA technology can realize multi-frequency resource integration, aggregate spectrum resources of the same frequency band or different frequency bands for terminal devices to use, thereby improving the utilization rate of the entire network resources.

[0067] When CA is configured for a terminal device, the terminal device may have multiple serving cells, including a primary cell (PCell) and at least one SCell. Among them, PCell is the cell where the terminal device and the network device perform initial connection establishment, or the cell where the terminal device performs radio resource control (RRC) connection reconstruction, or the PCell executed during the handover process; PCell is responsible for the radio resource control RRC communication with the terminal device, and the CC corresponding to PCell is called the primary component carrier (PCC). SCell is added / modified / released through the RRC connection reconfiguration message after the initial security activation procedure; SCell is used to provide additional radio resources, and there is no RRC communication between SCell and the terminal device.

[0068] 4. SCell activation

[0069] The NR protocol defines two states of SCell: activated state and deactivated state. When the SCell is in the activated state and the SCell is configured with a physical downlink control channel (PDCCH), the terminal device monitors the PDCCH of the SCell and transmits signals based on the network configuration and uplink and downlink scheduling information. When the SCell is in the deactivated state, the terminal device will not monitor or transmit any uplink and downlink signals in the SCell.

[0070] Usually, the network device provides the terminal device with the relevant configuration of the SCell through RRC signaling, and instructs the terminal device to add the SCell. At this time, the default state of the SCell is deactivated. In other words, the SCell cannot be used after configuration, and the SCell needs to be activated.

[0071] After the terminal device adds SCell, it mainly includes the following three processes:

[0072] 4.1 Process of receiving activation command

[0073] Specifically, the network device sends an activation command to the terminal device by activating a medium access control element (MAC CE); the terminal device sends HARQ feedback information to the network device, and the HARQ feedback information is used to indicate whether the activation command is successfully received.

[0074] 4.2 SCell Activation Process in FR2

[0075] Specifically, when the network device receives HARQ feedback information from the terminal device, and the HARQ feedback information indicates that the activation command is successfully received, the terminal device and the network device perform beam alignment. Figure 3 As shown, the activation process of the SCell in FR2 can be understood as a process of coarse beam alignment based on SSB to determine the network device transmit beam and the terminal device receive beam. Specifically, the network device sends SSB to the terminal device in multiple transmit beam directions, and the terminal device receives SSB from the network device in multiple receive beam directions; the terminal device performs automatic gain control setting (automatic gain control settling, AGC settling), cell search (cell search) and layer 1 reference signal received power measurement (layer 1reference signal received power measurement, L1-RSRP measurement) based on the received SSB. Among them, AGC settling is used to determine the transmit power of the transmit beam; cell search is used to detect SSB to obtain coarse synchronization information and determine the frame boundary; L1-RSRP measurement is used to determine the transmit beam range and the receive beam range. It should be noted that usually the terminal device needs to perform 2 AGCsettling, 1 cell search and 1 L1-RSRP measurement in each receive beam direction.

[0076] 4.3 Channel State Information Reference Signal (CSI-RS) Measurement Process

[0077] Specifically, the network device sends CSI-RS to the terminal device through the SCell; the terminal device receives the CSI-RS and measures the CSI-RS to obtain a CSI report; the terminal device sends the CSI report to the network device. It should be understood that when the network device receives a valid CSI report of the SCell from the terminal device, the activation process of the SCell is deemed to be completed.

[0078] It can be seen that the delay caused by the process of activating the SCell in FR2 can include the following three parts of delay: the delay caused by the process of receiving the activation command, called T HARQ ; The delay caused by the activation process is called T activation_time ; The delay caused by the CSI-RS measurement process is called T CSI_Reporting .

[0079] In order to shorten the delay of activating SCell, the present application provides a reference signal burst and a secondary cell activation method based on the reference signal burst. The reference signal burst is first described below.

[0080] The reference signal burst mentioned in the present application includes a signal composed of a signal for synchronization (the first signal mentioned in the present application) and a channel for carrying frame indication information and index value information (i.e., the first channel mentioned in the present application). The present application does not limit the specific name of the reference signal burst. Among them, the frame indication information is used to indicate the position of the reference signal burst in the corresponding frame or to indicate the position of the reference signal burst set (set) to which the reference signal burst belongs in the corresponding frame, and the index value information is used to indicate the position of the reference signal burst in the reference signal burst set. It can be understood that after the terminal device parses the reference signal burst, it performs symbol synchronization according to the first signal, and obtains the frame indication information and index value information from the first channel for frame synchronization.

[0081] In a possible implementation, the first signal includes a primary synchronization signal (PSS) and / or a secondary synchronization signal (SSS); or, the first signal is a signal generated based on an m-sequence, for example, the first signal is a CSI-RS. The first channel includes a physical broadcast channel (PBCH) or a PDCCH.

[0082] That is, the reference signal burst may include a signal composed of PSS and / or SSS, PBCH, or a signal composed of PSS and / or SSS, PDCCH, or a signal generated based on an m-sequence and PBCH, or a signal generated based on an m-sequence and PDCCH. Exemplarily, the physical signal structure of the reference signal burst may be as follows: Figure 4 or Figure 5 As shown. Figure 4In the reference signal burst, the first signal includes PSS and SSS, and the first channel is PBCH. Figure 5 In the reference signal burst, the first signal includes a signal generated based on an m-sequence (eg Figure 5 The first channel is a PDCCH. It should be noted that the signal generated based on the m-sequence mentioned in the present application includes a signal generated by a deformation of the signal generated based on the m-sequence.

[0083] In a possible implementation, the number of bits corresponding to the frame indication information, or understood as the number of bits used to indicate the frame indication information, is determined according to the number of reference signal burst sets contained in a frame; the number of bits corresponding to the index value information, or understood as the number of bits used to indicate the index value information, is determined according to the number of reference signal bursts contained in a reference signal burst set. For example, in the NR standard, when the transmission frame length duration is 10ms, the period of a reference signal burst set is 2.5ms, and a frame contains 4 reference signal burst sets, that is, when the duration of a frame includes the period of 4 reference signal burst sets, the frame indication information requires 2 bits to indicate which quarter of the frame the reference signal burst belongs to, or requires 2 bits to indicate which quarter of the frame the reference signal burst set belongs to. When a reference signal burst set includes 32 reference signal bursts, the index value information requires 5 bits to indicate which reference signal burst the reference signal burst is in the reference signal burst set.

[0084] In a possible implementation, the index value information of the reference signal burst has a corresponding relationship with the transmit beam direction, and reference signal bursts with different index value information in the same reference signal burst set can correspond to the same transmit beam direction. For example, st The reference signal burst set includes 32 reference signal bursts sent by the transmit beam TX1: reference signal burst #1 to reference signal burst #32. Reference signal bursts with different index value information in the same reference signal burst set can also correspond to different transmit beam directions. For example, 1 st The reference signal burst set includes eight reference signal bursts sent by transmit beams TX1 to TX8: reference signal burst #1 to reference signal burst #8. stDifferent reference signal bursts in a reference signal burst set correspond to different transmit beam directions. In the case where reference signal bursts with different index value information correspond to different transmit beam directions, reference signal bursts with the same index value information in different reference signal burst sets correspond to the same transmit beam direction. For example, st The reference signal burst set includes eight reference signal bursts sent by transmit beams TX1 to TX8: reference signal burst #1 to reference signal burst #8, 2 th The reference signal burst set includes eight reference signal bursts sent by transmit beams TX1 to TX8: reference signal burst #1 to reference signal burst #8, where 1 st Reference signal burst #1 and 2 in the reference signal burst set th The reference signal burst#1 in the reference signal burstset all corresponds to the transmit beam TX1.

[0085] Based on the above-mentioned reference signal burst, the secondary cell activation method and communication device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings. Figure 6 FIG. 1 is a flow chart of a method for activating a secondary cell provided in an embodiment of the present application. Figure 6 As shown, the secondary cell activation method includes the following steps S601 to S603: Figure 6 The method execution subject shown is described by taking a terminal device and a network device as an example. It can be understood that Figure 6 The execution subject of the method shown may also be a module in a terminal device (for example, a chip) and a module in a network device (for example, a chip, or a CU, or a DU).

[0086] S601. A terminal device receives first information from a network device, where the first information indicates first information of a starting position of a reference signal burst of a secondary cell and an interval between two adjacent reference signal bursts.

[0087] The network device sends RRC signaling to the terminal device through the RRC connection between the PCell and the terminal device, and the RRC signaling carries the first information for indicating the starting position of the reference signal burst of the secondary cell and the interval between two adjacent reference signal bursts. It can be understood that a reference signal burst set includes multiple reference signal bursts, and the period of the reference signal burst set can be determined according to the number of reference signal bursts in the reference signal burst set and the interval between two adjacent reference signal bursts. Among them, the interval can be understood as the time unit between the end time of the previous reference signal burst and the start time of the next reference signal burst in two adjacent reference signal bursts, and the time unit includes but is not limited to a time slot or a time domain symbol (or symbol), etc.

[0088] Exemplarily, the subcarrier spacing of the SCell to be activated is 120kHz, the length of a time slot is 0.125ms, a time slot contains 14 symbols, the length of a symbol is 0.00893ms (i.e., 0.125ms / 14), and a reference signal burst occupies 4 symbols in the time domain. In this case, the first information indicates that the interval between two adjacent reference signal bursts is 3 symbols. If a reference signal burst set includes 32 reference signal bursts, it can be determined that the period of the reference signal burst set is the product of 32 and the duration of 7 symbols (including the 4 symbols occupied by the reference signal burst in the time domain and the 3 symbols between two adjacent reference signal bursts) (i.e., the product of 7 and 0.00893ms, which is 0.06251ms), which is 2ms. If it is known that a reference signal burst set includes 8 reference signal bursts, it can be determined that the period of the reference signal burst set is the product of 8 and the duration of 7 symbols (ie, 0.06251 ms), which is 0.5 ms.

[0089] In a possible implementation, the reference signal burst set period may be determined according to one or more of the subcarrier spacing, the number of transmit beams, or the number of receive beams corresponding to the secondary cell. Exemplarily, when the interval (e.g., the number of symbols) between two adjacent reference signal bursts remains unchanged, as the subcarrier spacing increases, the shorter the duration of the symbol, the shorter the period of the reference signal burst set. When the interval (e.g., the number of symbols) between two adjacent reference signal bursts remains unchanged and the subcarrier spacing is fixed, as the number of transmit beams increases, the period of the reference signal burst set increases. When the interval (e.g., the number of symbols) between two adjacent reference signal bursts remains unchanged and the subcarrier spacing is fixed, as the number of receive beams increases, the period of the reference signal burst set increases.

[0090] S602. The terminal device receives a reference signal burst from the secondary cell according to a starting position and an interval.

[0091] The terminal device determines the reference signal burst pattern according to the starting position and interval of the reference signal burst, and receives the reference signal burst from the network device through the secondary cell according to the pattern. It can be understood that the secondary cell that sends the reference signal burst is the secondary cell to be activated.

[0092] In a possible implementation mode 1, the terminal device further receives third information from the network device, where the third information indicates the number of reference signal burst sets. It is understandable that the number of reference signal burst sets is determined according to the number of transmit beams. In this case, the terminal device can determine the number of reference signal bursts contained in each reference signal burst set in the pattern according to the number of receive beams.

[0093] Exemplarily, the number of transmit beams is 8, and the third information indicates that the number of reference signal burst sets is 8. During the secondary cell activation process, the terminal device performs two AGC settlings (such as the first AGC settling and the second AGC settling described below) in each receive beam direction, performs one cell search, and performs one L1-RSRP measurement. In this case, the pattern determined by the terminal device is as follows: Figure 7 As shown, the reference signal bursts in the same reference signal burst set correspond to the same transmit beam direction, and the number of reference signal bursts in a reference signal burstset in the pattern is 4 times the number of receive beams. Figure 7 The example in which the number of receiving beams is 8, that is, the number of reference signal bursts in a reference signal burst set in the pattern is 32, is used for illustration and should not be regarded as a specific limitation of the present application.

[0094] In a possible implementation of the embodiment 1, the transmit beam of the secondary cell includes a first transmit beam, and the first transmit beam corresponds to a first reference signal burst set in the pattern; the first reference signal burst set includes a first part burst, a second part burst, a third part burst and a fourth part burst, and the number of reference signal bursts included in each part burst is determined according to the number of receive beams. Different reference signal bursts in the first part burst are used to perform a first AGC settling on the first transmit beam direction in different receive beam directions, different reference signal bursts in the second part burst are used to perform a second AGC settling on the first transmit beam direction in different receive beam directions, different reference signal bursts in the third part burst are used to perform Cell search on the first transmit beam direction in different receive beam directions, and different reference signal bursts in the fourth part burst are used to perform L1-RSRP measurement on the first transmit beam direction in different receive beam directions.

[0095] In a possible implementation mode 2, the terminal device receives second information from the network device, where the second information indicates the number of reference signal bursts included in the reference signal burst set. The number of reference signal bursts included in the reference signal burst set can be understood as the number of transmit beams. In this case, the terminal device can determine the number of reference signal burst sets in the pattern according to the number of receive beams.

[0096] Exemplarily, the number of transmit beams is 8, and the second information indicates that the number of reference signal bursts included in the reference signal burst set is 8. During the secondary cell activation process, the terminal device performs two AGC settlings, one cell search, and one L1-RSRP measurement in each receive beam direction. In this case, the pattern determined by the terminal device is as follows: Figure 8 As shown, the reference signal bursts in the same reference signal burst set correspond to the same receiving beam direction, and the number of reference signal burst sets in the pattern is 4 times the number of receiving beams. Figure 8 The example in which the number of receiving beams is 8, that is, the number of reference signal burst sets in the pattern is 32, is used for illustration and should not be regarded as a specific limitation of the present application.

[0097] In a possible implementation of embodiment 2, the receiving beam of the terminal device includes a first receiving beam, and the first receiving beam corresponds to a second reference signal burst set, a third reference signal burst set, a fourth reference signal burst set and a fifth reference signal burst set in the pattern; wherein different reference signal bursts in the second reference signal burst set are used to perform a first AGCsettling for different transmitting beam directions in the first receiving beam direction, different reference signal bursts in the third reference signal burst set are used to perform a second AGC settling for different transmitting beam directions in the first receiving beam direction, different reference signal bursts in the fourth reference signal burst set are used to perform Cell search for different transmitting beam directions in the first receiving beam direction, and different reference signal bursts in the fifth reference signal burst set are used to perform L1-RSRP measurement for different transmitting beam directions in the first receiving beam direction.

[0098] In a possible implementation manner 3, the terminal device receives fourth information from the network device, where the fourth information indicates a transmission mode of a reference signal burst in the same reference signal burst set, where the transmission mode is repeated transmission or non-repeated transmission. The repeated transmission may be understood as the reference signal burst in the same reference signal burst set corresponding to the same transmit beam direction (for example, Figure 7 As shown in FIG. 1 ), non-repetitive transmission can be understood as different reference signal bursts in the same reference signal burstset corresponding to different transmission beam directions (for example, Figure 8 shown).

[0099] In an implementation manner 1 of a possible implementation manner 3, the fourth information indicates that the reference signal burst in the same reference signal burst set is sent repeatedly. In this case, the reference signal burst in a reference signal burst set corresponds to the same transmit beam direction, and the terminal device traverses the receive beam to receive the reference signal burst in the reference signal burst set. When the terminal device receives 4 reference signal bursts in each receive beam direction, the terminal device completes the reception of the reference signal burst in a reference signal burst set in the pattern.

[0100] In an implementation manner 2 of a possible implementation manner 3, the fourth information indicates that the transmission mode of the reference signal burst in the same reference signal burst set is non-repeated transmission. In this case, the reference signal burst in a reference signal burst set corresponds to the same receiving beam direction, and the terminal device can determine that the reception of the reference signal burst in a reference signal burst set is completed based on the correspondence between the index value information and the transmitting beam direction.

[0101] It can be understood that the aforementioned embodiments 1 to 3 can be executed separately in different implementation schemes, and embodiment 1 can also be executed in conjunction with implementation method 1 in embodiment 3 in the same implementation scheme, and embodiment 2 can be executed in conjunction with implementation method 2 in embodiment 3 in the same implementation scheme. For example, taking the collaborative execution of implementation method 2 and implementation method 2 in embodiment 3 in the same implementation scheme as an example, the terminal device receives second information and fourth information from the network device, the second information indicates that the number of reference signal bursts in a reference signal burst set is 8, and the fourth information indicates that the transmission mode of the reference signal burst in the same reference signal burst set is non-repetitive transmission, then the terminal device can determine the number of reference signal burst sets according to the number of receiving beams of the terminal device, and obtain the following: Figure 8 The pattern shown.

[0102] It can be understood that the aforementioned second information and fourth information can both be carried in RRC signaling (or understood as RRC message); the first information, the second information, and the fourth information can be carried in the same message or in different messages, and this application does not make specific limitations on this.

[0103] S603: The terminal device performs AGC settling or cell search or L1-RSRP measurement according to the reference signal burst.

[0104] The terminal device receives a reference signal burst according to the pattern, and performs an AGC settling process, a cell search process or an L1-RSRP measurement process in the secondary cell activation process according to the received reference signal.

[0105] For example, see Figure 7 In the pattern shown in FIG. 1 , the receiving beams of the terminal device include RX1 to RX8, and the transmitting beams of the secondary cell include TX1 to TX8. In this case, 1 stReference signal burst set~8 th The reference signal burst sets correspond to TX1 to TX8 respectively. st Take the reference signal burst set as an example. st The reference signal burstset includes a first part burst (i.e., reference signal burst#1~#8), a second part burst (i.e., reference signal burst#9~#16), a third part burst (i.e., reference signal burst#17~#24) and a fourth part burst (i.e., reference signal burst#25~#32), wherein different reference signal bursts in the first part burst are used to perform a first AGC settling on the TX1 direction in different receiving beam directions, different reference signal bursts in the second part burst are used to perform a second AGC settling on the TX1 direction in different receiving beam directions, different reference signal bursts in the third part burst are used to perform Cell search on the TX1 direction in different receiving beam directions, and different reference signal bursts in the fourth part burst are used to perform L1-RSRP measurement on the TX1 direction in different receiving beam directions.

[0106] For example, see Figure 8 In the pattern shown in FIG. 1 , the receiving beams of the terminal device include RX1 to RX8, and the transmitting beams of the secondary cell include TX1 to TX8. In this case, 1 st Reference signal burst set~32 nd The reference signal burstset corresponds to RX1 to RX8 respectively. st Reference signal burst set, 9 th Reference signal burst set, 17 th Reference signal burst set, 25 th Take the reference signal burst set as an example; where 1 st Different reference signal bursts in the reference signal burst set are used to perform the first AGC settling for different transmit beam directions in the RX1 direction. th Different reference signal bursts in the reference signal burst set are used to perform the second AGC settling on RX1 for different transmit beam directions. th Different reference signal bursts in the reference signal burst set are used to perform Cell search on different transmit beam directions in the RX1 direction.th Different reference signal bursts in the reference signal burst set are used to perform L1-RSRP measurement on different transmit beam directions in the RX1 direction.

[0107] It should be noted that Cell search is used for frame synchronization. Figure 4 and Figure 5 The physical structure of the reference signal burst is shown to describe in detail the process of performing Cell search by the terminal device.

[0108] Combination Figure 4 The physical structure of the reference signal burst shown, the terminal device parses the received reference signal burst, performs symbol synchronization according to the PSS and SSS in the receiving direction, and determines the position of the PSS symbol and the SSS symbol; and determines the position of the PBCH according to the determined positions of the PSS symbol and the SSS symbol and the physical structure of the reference signal burst; further, the PBCH is detected to obtain the frame indication information and index value information carried in the PBCH, and the starting position of the frame in which the current reference signal burst is located (or understood as the frame corresponding to the current reference signal burst) is determined according to the frame indication information and the index value information. For ease of understanding, the present application provides an example of determining the starting position of the frame in which the current reference signal burst is located according to the frame indication information and the index value information. For example, the frame indication information carried by the first channel in the current reference signal burst indicates that the reference signal burst set to which the reference signal burst belongs is in the first quarter frame of the current frame, and the index value information indicates that the reference signal burst is the third reference signal burst in the reference signal burst set to which it belongs. In this case, the terminal device determines the starting position of the first reference signal burst of the reference signal burst set to which it belongs (or is understood as the starting position of the reference signal burst set) based on the index value information of the reference signal burst, and determines the starting position of the frame based on the position of the frame in which the first reference signal burst set is located.

[0109] Combination Figure 5The physical structure of the reference signal burst shown in the figure is used to obtain the time domain resources and frequency domain resources corresponding to the burst through RRC signaling; the terminal device parses the received reference signal burst to obtain CSI-RS information, and performs symbol synchronization according to the autocorrelation characteristics of the m sequence to determine the position of the CSI-RS symbol; and determines the position of the PDCCH according to the determined CSI-RS symbol and the physical structure of the reference signal burst; further, the PDCCH is detected to obtain the downlink control information (DCI) signaling carried by the PDCCH. The terminal device parses the DCI signaling, obtains the frame indication information and index value information of the reference signal burst from the DCI signaling, and determines the starting position of the frame where the current reference signal burst is located according to the frame indication information and index value information. Among them, the radio network temporary indentifier (RNTI) scrambling method of the DCI signaling includes but is not limited to C-RNTI scrambling, CS-RNTI scrambling, and scrambling methods other than C-RNTI scrambling and CS-RNTI scrambling.

[0110] In summary, through Figure 6 In the method shown, the first information can affect the period of the reference signal burst set by indicating the interval between two adjacent reference signal bursts, thereby improving the flexibility of the terminal device in obtaining the period of the reference signal burst set. The method of receiving the reference signal burst according to a flexible period, performing automatic gain control setting or cell search or layer 1 reference signal receiving power measurement is conducive to reducing the delay of the terminal device in activating the secondary cell, compared with the method of receiving the SSB according to a fixed period, performing automatic gain control setting or cell search or layer 1 reference signal receiving power measurement.

[0111] It is understandable that in order to implement the functions in the above embodiments, the terminal device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software transceiver components driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0112] Fig. 9 and Fig.10The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 1 The terminal 120 shown may also be a module (such as a chip) applied to a terminal device, or the communication device may be Figure 1 The network device 110 shown may also be a module (such as a chip) applied to a network device.

[0113] like Fig. 9 As shown, the communication device 900 includes a processing unit 910 and a transceiver unit 920. The communication device 900 is used to implement the above Figure 6 The functions of the terminal device in the method embodiment shown in FIG.

[0114] When the communication device 900 is used to implement Figure 6 The functions of the terminal device in the method embodiment shown are: a transceiver unit 920, used to receive first information from a network device, the first information indicating a starting position of a reference signal burst of a secondary cell and an interval between two adjacent reference signal bursts; the transceiver unit 920, is also used to receive a reference signal burst from the secondary cell according to the starting position and the interval; the processing unit 910, is used to perform automatic gain control settings or cell search or layer 1 reference signal receiving power measurement according to the reference signal burst.

[0115] In one possible implementation, the reference signal burst includes a signal consisting of a first signal and a first channel, the first signal is used for synchronization, the first channel is used to carry frame indication information and index value information, the frame indication information is used to indicate the position of the reference signal burst in the corresponding frame, and the index value information is used to indicate the position of the reference signal burst within the reference signal burst set to which it belongs.

[0116] In a possible implementation, the first signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS, and the first channel is a physical broadcast channel PBCH.

[0117] In a possible implementation, the first signal is a signal generated based on an m-sequence, and the first channel is a physical downlink control channel PDCCH.

[0118] In a possible implementation, the transceiver unit 920 is further configured to receive second information from a network device, where the second information indicates the number of reference signal bursts included in the reference signal burst set.

[0119] In a possible implementation, the transceiver unit 920 is further configured to receive third information from the network device, where the third information indicates the number of reference signal burst sets.

[0120] In a possible implementation, the number of reference signal bursts in the reference signal burst set is determined according to the number of receiving beams of the terminal device.

[0121] In a possible implementation, the transceiver unit 920 is further configured to receive fourth information from the network device, where the fourth information indicates a transmission mode of reference signal bursts within the same reference signal burst set, where the transmission mode is repeated transmission or non-repeated transmission.

[0122] For more detailed description of the transceiver unit 920 and the processing unit 910, please refer to Figure 6 Relevant description of the terminal device in the method embodiment shown.

[0123] like Fig. 9 As shown, the communication device 900 includes a processing unit 910 and a transceiver unit 920. The communication device 900 is used to implement the above Figure 6 The functions of the network device in the method embodiment shown in FIG.

[0124] When the communication device 900 is used to implement Figure 6 The functions of the network device in the method embodiment shown are: a transceiver unit 920, used to send first information to a terminal device, the first information indicating a starting position of a reference signal burst of a secondary cell and an interval between two adjacent reference signal bursts; the transceiver unit 920, is also used to send a reference signal burst to the terminal device through the secondary cell according to the starting position and the interval, the reference signal burst being used for automatic gain control setting or cell search or layer 1 reference signal receiving power measurement.

[0125] In one possible implementation, the reference signal burst includes a signal consisting of a first signal and a first channel, the first signal is used for synchronization, the first channel is used to carry frame indication information and index value information, the frame indication information is used to indicate the position of the reference signal burst in the corresponding frame, and the index value information is used to indicate the position of the reference signal burst within the reference signal burst set to which it belongs.

[0126] In a possible implementation, the first signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS, and the first channel is a physical broadcast channel PBCH.

[0127] In a possible implementation, the first signal is a signal generated based on an m-sequence, and the first channel is a physical downlink control channel PDCCH.

[0128] In a possible implementation, the transceiver unit 920 is further configured to send second information to the terminal device, where the second information indicates the number of reference signal bursts included in the reference signal burst set.

[0129] In a possible implementation, the transceiver unit 920 is further configured to send second information to the terminal device, where the second information indicates the number of reference signal burst sets.

[0130] In a possible implementation, the number of reference signal bursts in the reference signal burst set is determined according to the number of receiving beams of the terminal device.

[0131] In a possible implementation, the transceiver unit 920 is further used to send fourth information to the terminal device, where the fourth information indicates a sending mode of reference signal bursts within the same reference signal burst set, where the sending mode is repeated sending or non-repeated sending.

[0132] For more detailed description of the transceiver unit 920 and the processing unit 910, please refer to Figure 6 The relevant description of the network device in the method embodiment is shown.

[0133] like Fig.10 As shown, the communication device 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled to each other. It is understood that the interface circuit 1020 can be a transceiver or an input-output interface. Optionally, the communication device 1000 may also include a memory 1030 for storing instructions executed by the processor 1010 or storing input data required by the processor 1010 to execute instructions or storing data generated after the processor 1010 executes instructions.

[0134] When the communication device 1000 is used to implement Figure 6 When the method is shown, the processor 1010 is used to implement the functions of the processing unit 910, and the interface circuit 1020 is used to implement the functions of the transceiver unit 920.

[0135] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above-mentioned method embodiment. The terminal chip receives information from the base station, which can be understood as the information is first received by other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information is first sent to other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the base station by these modules.

[0136] When the above-mentioned communication device is a chip applied to a network device, the network device chip implements the function of the network device in the above-mentioned method embodiment. The network device chip receives information from the terminal, which can be understood as the information is first received by other modules in the network device (such as a radio frequency module or an antenna), and then sent to the network device chip by these modules. The network device chip sends information to the terminal, which can be understood as the information is sent to other modules in the network device (such as a radio frequency module or an antenna), and then sent to the terminal by these modules.

[0137] In the present application, when entity A sends information to entity B, it can be that A sends it directly to B, or that A sends it to B indirectly through other entities. Similarly, when entity B receives information from entity A, it can be that entity B directly receives the information sent by entity A, or that entity B indirectly receives the information sent by entity A through other entities. Entities A and B here can be RAN nodes or terminals, or modules inside the RAN nodes or terminals. The sending and receiving of information can be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station.

[0138] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0139] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also be present in a base station or a terminal as discrete components.

[0140] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0141] In the various embodiments of the present application, unless otherwise specified or provided in a logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0142] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0143] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A method for activating a secondary cell, characterized in that: The method comprises: receiving first information from a network device, where the first information indicates a starting position of a reference signal burst of a secondary cell and an interval between two adjacent reference signal bursts; receiving a reference signal burst from the secondary cell according to the starting position and the interval; According to the reference signal burst, automatic gain control setting or cell search or layer 1 reference signal received power measurement is performed.

2. The method according to claim 1, characterized in that: The reference signal burst includes a signal composed of a first signal and a first channel, the first signal is used for synchronization, the first channel is used to carry frame indication information and index value information, the frame indication information is used to indicate the position of the reference signal burst in the corresponding frame, and the index value information is used to indicate the position of the reference signal burst within the reference signal burst set to which it belongs.

3. The method according to claim 2, characterized in that: The first signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS, and the first channel is a physical broadcast channel PBCH.

4. The method according to claim 2, characterized in that: The first signal is a signal generated based on an m-sequence, and the first channel is a physical downlink control channel PDCCH.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: Second information is received from the network device, where the second information indicates the number of reference signal bursts included in the reference signal burst set.

6. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: Third information is received from the network device, the third information indicating a number of reference signal burst sets.

7. The method according to claim 6, characterized in that: The number of reference signal bursts in the reference signal burst set is determined according to the number of receiving beams of the terminal device.

8. The method according to any one of claims 1 to 7, characterized in that: The method further comprises: Fourth information is received from the network device, where the fourth information indicates a sending mode of reference signal bursts within a same reference signal burst set, where the sending mode is repeated sending or non-repeated sending.

9. A method for activating a secondary cell, characterized in that: The method comprises: Sending first information to a terminal device, where the first information indicates a starting position of a reference signal burst of a secondary cell and an interval between two adjacent reference signal bursts; According to the starting position and the interval, a reference signal burst is sent to the terminal device through the secondary cell, where the reference signal burst is used for automatic gain control setting or cell search or layer 1 reference signal received power measurement.

10. The method according to claim 9, characterized in that: The reference signal burst includes a signal composed of a first signal and a first channel, the first signal is used for synchronization, the first channel is used to carry frame indication information and index value information, the frame indication information is used to indicate the position of the reference signal burst in the corresponding frame, and the index value information is used to indicate the position of the reference signal burst within the reference signal burst set to which it belongs.

11. The method according to claim 10, characterized in that: The first signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS, and the first channel is a physical broadcast channel PBCH.

12. The method according to claim 10, characterized in that: The first signal is a signal generated based on an m-sequence, and the first channel is a physical downlink control channel PDCCH.

13. The method according to any one of claims 9 to 12, further characterized in that: The method further comprises: Sending second information to the terminal device, where the second information indicates the number of reference signal bursts included in the reference signal burst set.

14. The method according to any one of claims 9 to 12, further characterized in that: The method further comprises: Sending third information to the terminal device, where the third information indicates the number of reference signal burst sets.

15. The method according to claim 14, characterized in that: The number of reference signal bursts in the reference signal burst set is determined according to the number of receiving beams of the terminal device.

16. The method according to any one of claims 9 to 15, characterized in that: The method further comprises: Send fourth information to the terminal device, where the fourth information indicates a sending mode of reference signal bursts within the same reference signal burst set, where the sending mode is repeated sending or non-repeated sending.

17. A communication device, characterized in that: The method comprises a module for executing the method as claimed in any one of claims 1 to 8, or comprises a module for executing the method as claimed in any one of claims 9 to 16.

18. A communication device, characterized in that: It includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of claims 1-8 through a logic circuit or by executing code instructions, or the processor is used to implement the method as described in any one of claims 9-16 through a logic circuit or by executing code instructions.

19. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 8 is implemented, or the method according to any one of claims 9 to 16 is implemented.

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