Wireless communication method, terminal device and network device

Abstract

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device determines second information based on first information, the first information being information associated with a direction, and the second information being used for indicating a receiving direction of an SSB. Thus, the terminal device can determine the second information based on the first information associated with the direction, and further obtain the receiving direction of the SSB based on the second information, so as to realize detection of the SSB.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal equipment and network equipment. Background Art

[0002] The synchronization signal block / physical broadcast channel block (SS / PBCH block, SSB) can be transmitted by beam scanning. Usually, multiple SSBs need to be sent in a cell to complete a beam scan so that the SSB covers the service range of the entire cell. These SSBs have corresponding SSB indexes (SSB index), and the terminal device can detect the corresponding SSB based on the SSB index. Therefore, how the terminal device obtains the SSB index becomes a problem that needs to be solved. Summary of the invention

[0003] The present application provides a wireless communication method, terminal equipment and network equipment. The following introduces various aspects involved in the present application.

[0004] In a first aspect, a method for wireless communication is provided, comprising: a terminal device determines second information based on first information, wherein the first information is information associated with a direction, and the second information is used to indicate a receiving direction of an SSB.

[0005] According to a second aspect, a method for wireless communication is provided, comprising: a network device sends an SSB to a terminal device, wherein a receiving direction of the SSB is indicated by second information, the second information is determined based on first information, and the first information is information associated with a direction.

[0006] According to a third aspect, a terminal device is provided, comprising: a processing unit, configured to determine second information based on first information, wherein the first information is information associated with a direction, and the second information is used to indicate a receiving direction of an SSB.

[0007] In a fourth aspect, a network device is provided, comprising: a transceiver unit, configured to send an SSB to a terminal device, wherein a receiving direction of the SSB is indicated by second information, the second information is determined based on first information, and the first information is information associated with a direction.

[0008] In a fifth aspect, a terminal device is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the terminal device executes the method described in the first aspect.

[0009] In a sixth aspect, a network device is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method described in the second aspect.

[0010] In a seventh aspect, a device is provided, comprising a processor, configured to call a program from a memory so that the device executes a method as described in any one of the first aspect or the second aspect.

[0011] In an eighth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0012] In a ninth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0013] In a tenth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In an eleventh aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] In the embodiment of the present application, the terminal device can determine the second information based on the first information associated with the direction, and then obtain the receiving direction of the SSB based on the second information to achieve detection of the SSB. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a diagram showing an example of a system architecture of a wireless communication system applicable to an embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of carrier aggregation applicable to an embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the development process of carrier aggregation applicable to the embodiments of the present application.

[0019] Figure 4 Schematic diagram of the structure of SSB applicable to the embodiment of the present application.

[0020] Figure 5 It is a schematic diagram of SSB beam scanning and SSB burst set sending timing applicable to an embodiment of the present application.

[0021] Figure 6A schematic diagram of the positional relationship between the direction of SSB beam scanning and the terminal device applicable to an embodiment of the present application.

[0022] Figure 7 It is a schematic diagram of activation of a secondary cell applicable to an embodiment of the present application.

[0023] Figure 8 It is a schematic diagram of another secondary cell activation applicable to the embodiment of the present application.

[0024] Fig. 9 A flowchart of a wireless communication method according to an embodiment of the present application is shown.

[0025] Fig.10 A schematic flowchart of determining the target SSB index according to an embodiment of the present application.

[0026] Fig.11 A schematic diagram of the structure of a terminal device according to an embodiment of the present application.

[0027] Fig.12 A schematic diagram of the structure of a network device according to an embodiment of the present application.

[0028] Fig.13 A schematic diagram of a device for communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0030] Wireless communication system

[0031] Figure 1 1 is an example diagram of the system architecture of a wireless communication system 100 to which an embodiment of the present application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide network coverage for a specific geographical area, and may communicate with the terminal device 120 located in the coverage area. The terminal device 120 may access a network, such as a wireless network, through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0032] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in the present application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0033] The terminal device in the embodiment of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiment of the present application can be a mobile phone, a tablet computer, a laptop, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity, which provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (D2D). For example, a cellular phone and a car communicate with each other using a sidelink signal. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0034] The network device in the embodiment of the present application may be a device for communicating with a terminal device. The network device may be, for example, an access network device or a wireless access network device. For example, the network device may be a base station. The base station may broadly cover the following various names, or be replaced with the following names: Node B, evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), home base station, network controller, access node, wireless node, access point (access point, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (remote radio unit, RRU), active antenna unit (active antenna unit, AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc. The base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof.

[0035] Carrier aggregation (CA)

[0036] In order to meet the peak rate of a single terminal device and improve system capacity, CA technology can be used to increase the transmission bandwidth of the system. CA technology combines two or more carriers into a data channel to increase data capacity. Using the existing network spectrum, CA technology enables operators to provide higher uplink (UL) and downlink (DL) data rates, thereby improving network performance and ensuring a high-quality user experience.

[0037] In a 4G system (or LTE system), 2-5 LTE component carriers or component carriers (CCs) can be aggregated together to achieve a higher transmission bandwidth, such as a maximum transmission bandwidth of 100 MHz, thereby effectively improving the uplink and downlink transmission rates. Figure 2 As shown, five 20MHz carriers can be aggregated to form a 100MHz transmission bandwidth. The terminal device can decide how many carriers can be used simultaneously for uplink and downlink transmission according to its capabilities.

[0038] In the LTE system, CA technology supports continuous or non-continuous carrier aggregation, and the maximum available resources for each carrier are 110 resource elements (REs). Each terminal device uses an independent hybrid automatic repeat request (HARQ) entity on each carrier, and each RE can only be mapped to a specific carrier. The physical downlink control channel (PDCCH) on each carrier is independent of each other and can reuse the design of LTE Release-8 (Rel-8 / R8), that is, the PDCCH of each carrier can be used to allocate resources for the physical downlink shared channel (PDSCH) and physical uplink shared channel (PUSCH) of each carrier, or the PDCCH channel on one carrier can be used through the carrier indicator field (CIF) to schedule the allocation of uplink and downlink resources of multiple carriers.

[0039] In the 10th release of LTE (Rele-10 / R10), the number of carriers that can be aggregated is increased, for example, up to 5 carriers can be aggregated. In addition, carrier aggregation has been continuously evolved in subsequent releases, for example, Figure 3 As shown, in the 5G system, the capability of carrier aggregation is further enhanced.

[0040] The 5G system (or new radio (NR) system) is rooted in the protocol standards of LTE and Wi-Fi. It is a new RF interface and RF access network that uses the best technologies and methods in the LTE system to meet the new requirements of various standardization organizations. CA technology has made an important contribution to improving user data throughput in the LTE system, and will play an equally important role in the 5G system. In order to increase capacity, operators around the world are actively adding CA bands and functions. As an example, as shown in Table 1, different countries and regions have designed corresponding CA types and functions for different frequency bands.

[0041] Table 1

[0042]

[0043] After the CA technology was introduced from the 4G LTE Advanced protocol, it was initially an aggregation of 5 carriers, each with a bandwidth of 20MHz, and the total bandwidth after the 5 carriers were aggregated was 100MHz. Later, it developed to the aggregation of 32 carriers, and the total bandwidth after aggregation can reach 640MHz. With the development of communication technology, the number of carriers that can be aggregated in 5G systems has gradually increased to 16, and the bandwidth of each carrier is larger. The bandwidth of a single carrier in the Sub6G system is up to 100MHz, so that 16 carriers can be aggregated to form a bandwidth of 1.6GHz. The bandwidth of a single carrier in the millimeter wave band is up to 400MHz, so that 16 carriers can be aggregated to form a bandwidth of 6.4GHz.

[0044] As mentioned above, when multiple carriers are aggregated together to work, they need to cooperate with each other. Therefore, these carriers are divided into main carriers and auxiliary carriers. Among them, the main carrier is used to carry signaling and manage other carriers. The main carrier can also be called the primary cell (PCell). The auxiliary carrier is used to expand the bandwidth and enhance the rate. The main carrier can decide when to add and delete. The auxiliary carrier can also be called the secondary cell (SCell). The main and auxiliary carriers are relative to the terminal equipment. For different terminal equipment, the main carrier and auxiliary carrier used for their work may be different. In addition, the multiple carriers involved in the aggregation may not be limited to the same base station. For example, these carriers can come from adjacent base stations.

[0045] SSB

[0046] In the NR system, each SSB is used for initial access and synchronization. The SSB consists of three parts: primary synchronization signals (PSS), secondary synchronization signals (SSS), and physical broadcast channel (PBCH). For example, Figure 4 As shown in the SSB structure, SSB occupies a total of 4 OFDM symbols in the time domain and a total of 240 subcarriers, i.e., 20 physical resource blocks (PRBs), which are numbered from 0 to 239, in the frequency domain.

[0047] SSB is transmitted by beam scanning. Usually, multiple SSBs need to be sent in a cell to complete a beam scan so that the SSB covers the service range of the entire cell. The SSBs required to complete a beam scan can form an SSB burst set, or simply called an SSB burst. Usually, the transmission configuration of the SSB burst set in time, frequency or space is described by the pattern of the SSB burst set. For example, Figure 5 The SSB beam scanning and SSB burst set transmission time are shown, where: Figure 5 (a) in FIG. 1 shows the spatial beams for transmitting each SSB. Figure 5 (b) in FIG. 1 shows the time domain position of each SSB. In different frequency bands and configurations, the pattern of the SSB burst set may be different. For example, in different frequency bands, the maximum number of SSBs that may be included in an SSB burst set may be 4, 8, 64, etc., and different SSBs have different SSB indexes. Figure 5 It is taken as an example that an SSB burst set includes 8 SSBs, namely 8 SSBs indexed from SSB 0 to SSB 7. As an example, Table 2 shows pattern information of SSB transmission under different sub-carrier spacings (sub-carrier space SCS) of SSB.

[0048] Table 2

[0049]

[0050]

[0051] The terminal device can obtain synchronization through the SSB sent by the primary cell and perform radio resource management (RRM) measurements. In order to save time and frequency resources and power consumption of the base station, SSB may not be transmitted in the secondary cell. However, in some cases, since the measurement requirements of the secondary cell are different from those of the primary cell, the secondary cell may also have SSB transmission.

[0052] Since the transmission of SSB by the terminal device will generate high energy consumption, for the purpose of energy saving, the SSB in the secondary cell should not be sent all the time, but should be sent on demand. In other words, the network equipment can configure SBB to be sent for a short time, that is, the SSB transmission on the secondary cell is only carried out for a period of time, which can be determined according to the needs of the terminal device. Such SSB is called on-demand SSB.

[0053] The difference between on-demand SSB and traditional SSB is that traditional SSB is transmitted periodically, while on-demand SSB is transmitted over a period of time, that is, within the required time, which is equivalent to that the transmission resources of on-demand SSB are dynamically or semi-statically scheduled.

[0054] The SSB described in the embodiments of the present application may include traditional SSB and on-demand SSB. Among them, a terminal device that supports on-demand SSB can receive the on-demand SSB sent by the network device, while a terminal device that does not support on-demand SSB cannot know that the network device has sent the on-demand SSB and can only detect the traditional SSB. Here, a terminal device that supports on-demand SSB may be, for example, a terminal device that supports a higher protocol version, such as a terminal device in Release 19 and later versions in NR; a terminal device that does not support on-demand SSB may be, for example, a terminal device that supports a lower protocol version, such as a terminal device in Release 18 and earlier versions in NR.

[0055] As mentioned above, SSB is transmitted by beam scanning. Figure 6 As shown in the figure, an SSB burst set includes 8 SSBs as an example, and the SSB indexes of the 8 SSBs are SSB 0, SSB 1, SSB 2, SSB 3, SSB 4, SSB 5, SSB 6 and SSB 7. Since the 8 SSBs indexed from SSB 0 to SSB 7 correspond to different directions, when the terminal device is located at different positions in the cell, the SSB with the best signal quality for it may be different. Figure 6 As shown, taking terminal device 1 and terminal device 2 as examples, for terminal device 1, the signal quality of the SSB received in the direction corresponding to index SSB 1 is optimal, so terminal device 1 can receive SSB in the direction corresponding to index SSB 1, that is, receive SSB with index SSB1; and for terminal device 2, the signal quality of the SSB received in the direction corresponding to index SSB 7 is optimal, so terminal device 2 can receive SSB in the direction corresponding to index SSB 7, that is, receive SSB with index SSB7.

[0056] Usually, the network device can send the corresponding SSB index to the terminal device, so that the terminal device can know which direction to receive the SSB. However, in some cases, the network device may not be able to send the SSB index to the terminal device in time, thus affecting the terminal device's detection of the SSB. Figure 7 and Figure 8 Provide specific instructions.

[0057] Figure 7 and Figure 8The process of activating a secondary cell is shown, wherein: Figure 7 It is the secondary cell activation process when the measurement result of the secondary cell is currently known. Figure 8 It is the secondary cell activation process when the measurement result of the secondary cell is currently unknown. Regardless of whether the measurement result of the secondary cell is obtained, after the terminal device reports valid channel state information (CSI), it can indicate that the activation of the secondary cell has been completed.

[0058] like Figure 7 As shown, if the terminal device has sent a measurement report to the network device within a certain period of time before receiving the activation signaling of the secondary cell, the network device can obtain the measurement result of the terminal device in advance. In this way, when the terminal device receives the activation signaling of the secondary cell, the network device can quickly determine the transmission configuration indication (TCI) status for further data transmission and send it to the terminal device. In this case, after receiving the activation signaling of the secondary cell, the terminal device can perform channel measurement and report CSI. Among them, Figure 7 The measurement results shown in may be, for example, measurement results of radio resource management (RRM) measurements. The terminal device may obtain corresponding measurement results based on the detection of SSB and form a measurement report. The measurement results include but are not limited to measurement results of parameters such as reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), and signal to interference noise ratio (SINR). In addition, the measurement results may be, for example, layer 3 (L3) cell-level measurement results, layer 3 beam-level measurement results, layer 1 (L1) cell-level measurement results, and layer 1 beam-level measurement results.

[0059] like Figure 8 As shown, if the terminal device does not form the above measurement report before receiving the activation signaling of the secondary cell, after receiving the activation signaling of the secondary cell, the terminal device needs to perform automatic gain control (AGC), synchronization, and report measurement results based on SSB, and the measurement results can be, for example, layer 1 (L1) (physical layer) cell-level measurement results or layer 1 beam-level measurement results. Then, the network device determines the TCI state that needs to be activated based on the measurement results reported by the terminal device and sends it to the terminal device.

[0060] for Figure 7 In the case shown, when the secondary cell is activated, if the network device has obtained the measurement report sent by the terminal device, such as a measurement report including layer 3 and / or layer 1, then the network device can determine the optimal beam based on the measurement report, thereby selecting the corresponding SSB index in the SSB burst set, and notifying the terminal device of the SSB index corresponding to the selected optimal beam. For example, the network device can notify the terminal device of the SSB index corresponding to the SSB to be sent in the secondary cell activation signaling. In this way, the terminal device can detect based on the SSB corresponding to the index to complete precise synchronization with the secondary cell.

[0061] And for Figure 8 In the situation shown, when the secondary cell is activated, the network device does not obtain the measurement report sent by the terminal device, such as the measurement report of layer 1, so the network device cannot determine the optimal beam when sending the secondary cell activation signaling. In some cases, even if the network device receives the measurement report when sending the secondary cell activation signaling, the decoding and parsing of the measurement results may not be completed when the network device determines the activation signaling, so the network device still cannot notify the terminal device of the SSB index corresponding to the SSB to be sent in time. In this way, the terminal device cannot detect based on the SSB corresponding to the index to complete the precise synchronization with the secondary cell.

[0062] To this end, an embodiment of the present application provides a method for wireless communication, in which a terminal device can determine second information based on first information associated with a direction, and then obtain a receiving direction of the SSB based on the second information to achieve detection of the SSB.

[0063] Combine the following Fig. 9 , the embodiments of the present application are introduced in detail.

[0064] Fig. 9 A flow chart of a wireless communication method provided in an embodiment of the present application. Fig. 9 As shown, in step 910, the terminal device determines the second information based on the first information.

[0065] The second information is used to determine (or indicate) the receiving direction of the SSB, that is, in which direction the terminal device receives the SSB, or detects the SSB.

[0066] The first information is information associated with a direction. For example, the first information is directional, such as having different values ​​of the first information in different directions; or, for another example, the first information may carry directional information.

[0067] The SSB described in the embodiments of the present application may be, for example, an on-demand SSB.

[0068] Since the terminal device can determine the second information based on the first information associated with the direction, and then obtain the receiving direction of the SSB, the SSB detection can be performed in time when the SSB index sent by the network device is not received.

[0069] In this case, the network device may not send the SSB index to the terminal device; alternatively, the network device may send the SSB index to the terminal device, and before sending the SSB index, the terminal device may perform SSB detection based on a self-determined SSB receiving direction.

[0070] The second information described in step 910, for example, includes a receiving direction of receiving the SSB and / or an SSB index of the SSB. That is, the terminal device can directly determine the receiving direction of the SSB based on the first information; or, the terminal device can determine information related to the receiving direction of the SSB, such as the SSB index or the direction corresponding to the SSB index, based on the first information, wherein the direction corresponding to the SSB index can be used as the receiving direction of the SSB, for example.

[0071] The direction corresponding to the SSB index may be, for example, the direction of the SSB indicated by the SSB index. Figure 5 and Figure 6 As shown in FIG. 1 , the 8 SSBs with SSB indices SSB 0 to SSB 7 have different positions in the spatial domain, that is, the 8 SSBs represented by SSB 0 to SSB 7 are located in different directions, respectively. Therefore, the directions corresponding to index SSB 0 to index SSB 7 are the directions of the SSBs represented by each. Figure 6 As shown, the direction corresponding to SSB 0 is direction A, that is, the direction of the SSB with index SSB 0 in the spatial domain is direction A; the direction corresponding to SSB 1 is direction B, that is, the direction of the SSB with index SSB 1 in the spatial domain is direction B; the direction corresponding to SSB 2 is direction C, that is, the direction of the SSB with index SSB 2 in the spatial domain is direction C; the direction corresponding to SSB 3 is direction D, that is, the direction of the SSB with index SSB 3 in the spatial domain is direction D; the direction corresponding to SSB 4 is direction E, that is, the direction of the SSB with index SSB 4 in the spatial domain is direction E; the direction corresponding to SSB 5 is direction F, that is, the direction of the SSB with index SSB 5 in the spatial domain is direction F; the direction corresponding to SSB 6 is direction G, that is, the direction of the SSB with index SSB 6 in the spatial domain is direction G; the direction corresponding to SSB 7 is direction H, that is, the direction of the SSB with index SSB 7 in the spatial domain is direction H.

[0072] As mentioned above, the first information is used to determine the second information, and the second information is used to determine the receiving direction of the SSB. The second information can be used to determine the receiving direction of an SSB, and the terminal device detects the SSB in the receiving direction; or the second information can be used to determine multiple receiving directions, and the terminal device performs SSB detection in multiple receiving directions. In other words, the terminal device can obtain one or more receiving directions based on the first information to perform SSB detection.

[0073] In the embodiment of the present application, the first information may include, for example, CSI and / or TCI status, which are described below respectively.

[0074] The first information includes CSI

[0075] CSI is used to describe the channel status (or channel attributes) of the communication link. For example, it may include the attenuation factors of the channel on each transmission path, such as signal scattering, environmental attenuation (including multipath fading and shadow fading), distance attenuation and other information. This information is used to evaluate and describe the characteristics of the communication channel so that terminal devices and network devices can make intelligent adjustments and decisions during the communication process.

[0076] CSI can be information associated with direction. For example, CSI information may include channel characteristics in various directions between the terminal device and the network device. These characteristics include, but are not limited to, information such as the amplitude and phase of the signal, which together describe the distribution of the signal in space. Since the channel characteristics in various directions between the terminal device and the network device are different, the CSI information can reflect the transmission of the signal in different directions. It can be said that the spatial directionality of the signal is implied in the CSI information.

[0077] In some embodiments, the second information mentioned above may include the direction corresponding to the channel in which the channel state indicated by the CSI satisfies a predetermined condition. Here, the predetermined condition may be, for example, that the channel state is optimal, that the parameter value used to represent the channel state is greater than a threshold, etc. As an example, the terminal device detects and obtains the corresponding CSI information, and the CSI information may include channel states in different directions. The terminal device can select the direction in which the channel state is optimal as the direction in which it receives SSB. Since SSB is transmitted by beam scanning, the complexity of receiving beam scanning can be reduced. Here, receiving beam scanning, for example, refers to the process in which the terminal device receives signals at different times using different beams, and determines the beam ultimately used to receive SSB based on the receiving beam with the highest power measured by it.

[0078] Still refer to Figure 6For terminal device 1, after detecting and obtaining CSI, if the CSI indicates that the channel state in direction B is optimal, terminal device 1 can receive the SSB sent by the network device in direction B, wherein the SSB index of the SSB in direction B is SSB 1; for terminal device 2, after detecting and obtaining CSI, if the CSI indicates that the channel state in direction H is optimal, terminal device 2 can receive the SSB sent by the network device in direction H, wherein the SSB index of the SSB in direction B is SSB7.

[0079] It should be noted that the CSI mentioned in the embodiments of the present application refers to, for example, effective CSI. Effective CSI refers to, for example, actually available CSI or CSI that has a positive impact on system performance.

[0080] The first information includes the TCI status

[0081] The TCI state can be used to describe the quasi-co-location (QCL) relationship between reference signals, such as the QCL relationship between a downlink reference signal (e.g., SSB) and a demodulation reference signal (DMSR) of a PDSCH. The TCI state provides the necessary spatial characteristics information for the terminal device to receive the physical channel so that the terminal device can correctly perform channel estimation and decoding.

[0082] The TCI state can be considered as information associated with a direction. Generally, the TCI state can directly or indirectly indicate which beam direction the terminal device can use to receive or send a signal. For example, if the DMRS of the PDSCH is configured to have a QCL relationship with a downlink reference signal (e.g., SSB), it means that the beam direction of the PDSCH is similar or the same as the beam direction of the downlink reference signal (e.g., SSB).

[0083] In some implementations, the second information may be determined based on the directional information carried in the TCI state. For example, the directional information carried in the TCI state may include one or more of the following: SSB index; directional information of a channel state information reference signal (CSI-RS); beam direction; antenna port; directional information of DMRS; and the like.

[0084] For example, if SSB is a source reference symbol, the TCI information includes an SSB index, and the second information may include the SSB index, and the direction corresponding to the SSB index may be used as the receiving direction of the SSB.

[0085] For another example, the TCI information includes a beam direction, which refers to which beam the terminal device should use to receive a downlink signal or a downlink channel. As an example, the beam direction carried in the TCI state corresponds to a certain SSB index, and the second information may include the SSB index, and the direction corresponding to the SSB index may be used as the receiving direction of the SSB.

[0086] For example, the TCI information includes antenna port information, where the antenna port refers to the antenna port used for downlink channel transmission, where different antenna ports may correspond to different transmission directions. The second information may include the direction corresponding to the antenna port carried in the TCI state, and the direction corresponding to the antenna port can be used as the receiving direction of the SSB.

[0087] For example, the TCI information includes the QCL relationship between the DMSR and a downlink reference signal, wherein the QCL relationship between the DMSR and a downlink reference signal (e.g., SSB) generally means that the beam direction of the DMSR is similar or identical to the downlink reference signal (e.g., SSB), and the TCI status indicates that the direction of the DMSR corresponds to a certain SSB index. The second information may include the SSB index, and the direction corresponding to the SSB index may be used as the receiving direction of the SSB.

[0088] In some implementations, the TCI state includes, for example, one or more of the following: a TCI state corresponding to a PDCCH; a TCI state corresponding to a PDSCH; a TCI state corresponding to a channel status information reference signal (CSI-RS).

[0089] The above-mentioned TCI state may be indicated by a network device. For example, the network device may send a TCI activation indication (such as carried in a MAC CE) to the terminal device to inform the terminal device of the currently activated TCI state. In other words, the TCI state may be an activated TCI state in a TCI state list (for example, typically including 128 TCI states), and the TCI list may be configured to the terminal device by the network device through RRC signaling.

[0090] In some implementations, the network device may further limit the range of the SSB index. Figure 6For example, the range of SSB indexes can be further narrowed from SSB 0 to SSB 7. For example, the range of SSB indexes used by terminal device 1 can be further narrowed to SSB 0 to SSB 2, and the range of SSB indexes used by terminal device 2 can be further narrowed to SSB 6 to SSB 7. These SSB indexes can be referred to as candidate SSB indexes. The number of the candidate SSB indexes can be one or more.

[0091] In some implementations, the terminal device is located in a secondary cell, and the information of the candidate SSB index can be determined based on the position information of the terminal device relative to the secondary base station corresponding to the secondary cell.

[0092] In some implementations, the position information of the terminal device relative to the secondary base station can be determined based on one or more of the following: the position information of the primary base station corresponding to the primary cell of the terminal device; the position information of the terminal device relative to the primary base station; the position information of the secondary base station corresponding to the secondary cell. In other words, the network device can determine the position of the terminal device relative to the secondary base station based on the position of the primary base station, the position of the secondary base station, and the position of the terminal device relative to the primary base station, and further determine multiple candidate SSB indexes based on the position of the terminal device relative to the secondary base station.

[0093] In some implementations, after determining the candidate SSB index, the network device may send information about the candidate SSB index to the terminal device; accordingly, the terminal device receives the information about the candidate SSB index sent by the network device. For example, the information about the candidate SSB index may be carried in one or more of the following: configuration information of the SSB sent by the network device; activation information of the SSB sent by the network device; configuration information of the secondary cell sent by the network device; activation information of the secondary cell sent by the network device.

[0094] The activation information of the SSB is used to determine the transmission time of the SSB, that is, when the SSB is activated. For example, the activation information of the SSB may be carried in the configuration information of the SSB; and / or, the activation information may be sent by the network device to the terminal device after the configuration information of the SSB; and / or, the activation information is pre-agreed.

[0095] The configuration information of the SSB may be, for example, the configuration information of the on-demand SSB. Optionally, the configuration information of the SSB may include, for example, one or more of the following: frequency information of the SSB; time domain information of the SSB burst set; information of the SSB position used for actually transmitting the SSB in the SSB burst set; period information of the SSB; subcarrier spacing of the SSB; bandwidth of the SSB; downlink transmission power of the SSB; cell identifier (for example, secondary cell identifier); and information of candidate SSB indexes.

[0096] Among them, the activation information of the SSB may, for example, include one or more of the following: activation indication information for indicating SSB activation; deactivation indication information for indicating SSB deactivation; information on the transmission start time of the SSB; information on the transmission end time of the SSB; information on the transmission duration of the SSB; secondary cell state (SCellState) information in the configuration information of the secondary cell (for example, if set to activation, it means that the SSB is activated, or if set to deactivation, it means that the SSB is not activated); period information of the SSB; information on candidate SSB indexes.

[0097] Optionally, the activation information of the SSB may be carried in the configuration information of the SSB, the configuration information of the secondary cell, or the activation information of the secondary cell; and / or, the activation information of the SSB may be sent by the network device to the terminal device independently of the above configuration information (for example, sent to the terminal device after the above configuration information); and / or, the activation information of the SSB may be pre-agreed (for example, specified by the protocol).

[0098] In step 910, the receiving direction determined by the terminal device is the direction corresponding to one or more indexes of the candidate SSB indexes. That is, the terminal device can receive the SSB based on multiple candidate SSB indexes sent by the network device, for example, detecting the SSB in the directions corresponding to multiple candidate SSB indexes; or, the terminal device can select an SSB index from multiple candidate SSB indexes, and receive the SSB in the direction corresponding to the SSB index to reduce the difficulty of detection. As an example, the terminal device determines the second information based on the first information, and the second information includes an SSB index, wherein the SSB index is one of the candidate SSB indexes, and the direction corresponding to the SSB index is used as the receiving direction of the SSB.

[0099] In some implementations, the terminal device may send a CSI report to the network device, where the CSI report is used to determine the target SSB index, for example, to determine the target SSB index in the candidate SSB index. That is, after the network device receives the CSI report sent by the terminal device, it determines the target SSB index in multiple SSB indexes based on the CSI report, and sends the SSB indicated by the target SSB index, that is, the SSB index of the SSB sent by the network device to the terminal device, for the network device to determine the target SSB index in the candidate SSB based on the CSI report sent by the terminal device.

[0100] For example, Fig.10 As shown, in step 1010, the terminal device sends a CSI report to the network device; in step 1020, the network device determines a target SSB index among candidate SSB indexes based on the CSI report; in step 1030, the network device sends the SSB indicated by the target SSB index to the terminal device.

[0101] Here, the target SSB index is the SSB index used for the network device to send the SSB, and in the above description, the second information may include one or SSB indexes, which are the SSB indexes of the SSB received by the terminal device. For example, these SSB indexes can be used as the receiving direction of the SSB, and the target SSB index can be, for example, one of the multiple SSB indexes.

[0102] As previously mentioned, the terminal device can determine the second information based on the first information, and obtain the receiving direction of the SSB from the second information. The terminal device can detect the SSB in the receiving direction, but the terminal device may not know the SSB index (for example, a specific index value) of the SSB received in the receiving direction. The SSB index of the SSB may need to be used in other situations, such as subsequent uplink transmission. Therefore, in some implementations, the network device may send a correspondence between the SSB index and the receiving direction of the SSB to the terminal device; accordingly, the terminal device receives the correspondence between the SSB index sent by the network device and the receiving direction of the SSB. The corresponding relationship is used to determine the SSB index corresponding to the receiving direction.

[0103] That is to say, after obtaining the receiving direction of the SSB, the terminal device can determine the SSB index of the SSB in the receiving direction based on the receiving direction and the correspondence between the SSB index and the receiving direction.

[0104] Still refer to Figure 6 , assuming that the SSB index includes SSB 0, SSB 1, SSB 2, SSB 3, SSB 4, SSB 5, SSB 6 and SSB 7, the corresponding relationship is: SSB 0, SSB 1, SSB 2, SSB 3, SSB 4, SSB 5, SSB 6 and SSB 7 correspond to direction A, direction B, direction C, direction D, direction E, direction F, direction G and direction H respectively. Assume that, for terminal device 1, the reception of SSB determined by terminal device 1 is direction B, then, according to the above corresponding relationship, terminal device 1 determines that the SSB index of the SSB corresponding to direction B is SSB 1. In this way, terminal device 1 can know the reception direction of SSB and the SSB index of SSB in the reception direction. Similarly, for terminal device 2, terminal device 2 determines that the reception direction of SSB is direction H, then, according to the above corresponding relationship, terminal device 2 determines that the SSB index of SSB corresponding to direction H is SSB 7. In this way, terminal device 2 can know the receiving direction of the SSB and the SSB index of the SSB in the receiving direction.

[0105] Combination of the above Figures 1 to 10 , describes the method embodiment of the present application in detail, and the following is combined with Figures 11 to 13 , describes the device embodiment of the present application in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0106] Fig.11 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Fig.11 The terminal device 1100 shown may include a processing unit 1110. The processing unit 1110 is used to determine second information based on first information, wherein the first information is information associated with a direction, and the second information is used to indicate a receiving direction of the SSB.

[0107] In some implementations, the second information includes: a receiving direction of the SSB; and / or an SSB index of the SSB.

[0108] In some implementations, the first information includes channel state information CSI.

[0109] In some implementations, the second information includes a direction corresponding to a channel with an optimal channel state indicated by the CSI.

[0110] In some implementations, the first information includes a transmission configuration indication TCI state.

[0111] In some implementations, the second information is determined based on direction information carried in the TCI state.

[0112] In some implementations, the directional information carried in the TCI state includes one or more of the following: SSB index; directional information of a channel state information reference signal CSI-RS; beam information; and antenna port information.

[0113] In some implementations, the terminal device 1100 also includes a transceiver unit 1120, which is used to: send a channel state information CSI report to the network device, wherein the CSI report is used by the network device to determine a target SSB index, and the index of the SSB sent by the network device is the target SSB index.

[0114] In some implementations, the target SSB index is one or more of the candidate SSB indexes.

[0115] In some implementations, the terminal device 1100 also includes a transceiver unit 1120, which is used to: receive information about candidate SSB indexes sent by the network device, wherein the receiving direction is a direction corresponding to one or more indexes among the candidate SSB indexes.

[0116] In some implementations, the information of the candidate SSB index is carried in one or more of the following: configuration information of the SSB sent by the network device; activation information of the SSB sent by the network device; configuration information of the secondary cell sent by the network device; activation information of the secondary cell sent by the network device.

[0117] In some implementations, the terminal device 1100 also includes a transceiver unit 1120, which is used to: receive the correspondence between the SSB index sent by the network device and the receiving direction of the SSB, wherein the correspondence is used to determine the SSB index corresponding to the receiving direction.

[0118] It can be understood that the processing unit 1110 may be, for example, the processor 1310, and the transceiver unit 1120 may be, for example, the transceiver 1330. In addition, the terminal device 1100 may further include a memory 1320, for details, see Fig.13 .

[0119] Fig.12 A schematic diagram of the structure of a network device provided in an embodiment of the present application. Fig.12 The network device 1200 shown may include a transceiver unit 1210. The transceiver unit 1210 is used to send an SSB to a terminal device, wherein a receiving direction of the SSB is indicated by second information, the second information is determined based on first information, and the first information is information associated with a direction.

[0120] In some implementations, the second information includes: a receiving direction of the SSB; and / or an SSB index of the SSB.

[0121] In some implementations, the first information includes channel state information CSI.

[0122] In some implementations, the second information includes a direction corresponding to a channel with an optimal channel state indicated by the CSI.

[0123] In some implementations, the first information includes a transmission configuration indication TCI state.

[0124] In some implementations, the second information is determined based on direction information carried in the TCI state.

[0125] In some implementations, the directional information carried in the TCI state includes one or more of the following: SSB index; directional information of a channel state information reference signal CSI-RS; beam information; and antenna port information.

[0126] In some implementations, the transceiver unit 1210 is also used to: receive a channel state information CSI report sent by the terminal device, wherein the CSI report is used by the network device 1200 to determine a target SSB index, and the index of the SSB sent by the network device 1200 is the target SSB index.

[0127] In some implementations, the target SSB index is one or more of the candidate SSB indexes.

[0128] In some implementations, the transceiver unit 1210 is further used to: send information about candidate SSB indexes to the terminal device, wherein the receiving direction is a direction corresponding to one or more indexes among the candidate SSB indexes.

[0129] In some implementations, the terminal device is located in a secondary cell, and the information of the candidate SSB index is determined based on the position information of the terminal device relative to a secondary base station corresponding to the secondary cell.

[0130] In some implementations, the position information of the terminal device relative to the secondary base station is determined based on one or more of the following: the position information of the primary base station corresponding to the primary cell of the terminal device; the position information of the terminal device relative to the primary base station; the position information of the secondary base station corresponding to the secondary cell.

[0131] In some implementations, the information of the candidate SSB index is carried in one or more of the following: configuration information of the SSB sent by the network device 1200; activation information of the SSB sent by the network device 1200; configuration information of the secondary cell sent by the network device 1200; activation information of the secondary cell sent by the network device 1200.

[0132] In some implementations, the transceiver unit 1210 is further used to: send a correspondence between an SSB index and a receiving direction of the SSB to the terminal device, wherein the correspondence is used to determine the SSB index corresponding to the receiving direction.

[0133] It can be understood that the transceiver unit 1210 can be, for example, a transceiver 1330. In addition, optionally, the network device 1200 further includes a processor 1310 and a memory 1320, for details, see Fig.13 .

[0134] Fig.13 It is a schematic structural diagram of a device for communication according to an embodiment of the present application. Fig.13 The dotted line shown in indicates that the unit or module is optional. The apparatus 1300 may be used to implement the method described in the above method embodiment. The apparatus 1300 may be, for example, a chip, a terminal device, or a network device.

[0135] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the aforementioned method embodiment. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor 1310 may be a central processing unit (CPU). Alternatively, the processor 1310 may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or may be any conventional processor, etc.

[0136] The apparatus 1300 may further include one or more memories 1320. The memory 1320 stores a program, which can be executed by the processor 1310, so that the processor 1310 executes the method described in the above method embodiment. The memory 1320 may be independent of the processor 1310 or integrated in the processor 1310.

[0137] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips through the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips through the transceiver 1330.

[0138] The embodiment of the present application also provides a communication system. The communication system includes the above-mentioned terminal device and network device. In some implementations, the system also includes other devices that interact with the terminal device and the network device.

[0139] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal device or a network device provided in the present application, and the program enables a computer to execute the method performed by the terminal device or the network device in each embodiment of the present application.

[0140] The embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal device or network device provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the terminal device or network device in each embodiment of the present application.

[0141] The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal device or network device provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the terminal device or network device in each embodiment of the present application.

[0142] It should be understood that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0143] In the embodiments of the present application, the "indication" mentioned can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0144] In the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0145] In the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship of indication and being indicated, configuration and being configured, etc.

[0146] In the embodiments of the present application, "pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0147] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0148] In the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0149] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.

[0150] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0151] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0152] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0153] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using 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 instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions 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 instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0154] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: The method comprises: The terminal device determines second information based on first information, wherein the first information is information associated with a direction, and the second information is used to indicate a receiving direction of a synchronization signal broadcast channel block SSB.

2. The method according to claim 1, characterized in that The second information includes: the receiving direction of the SSB; and / or, The SSB index of the SSB.

3. The method according to claim 1 or 2, characterized in that: The first information includes channel state information CSI.

4. The method according to claim 3, characterized in that The second information includes a direction corresponding to a channel having an optimal channel state indicated by the CSI.

5. The method according to claim 1 or 2, characterized in that: The first information includes a transmission configuration indication TCI state.

6. The method according to claim 5, characterized in that The second information is determined based on the direction information carried in the TCI state.

7. The method according to claim 6, characterized in that The directional information carried in the TCI state includes one or more of the following: SSB index; directional information of the channel state information reference signal CSI-RS; beam information; antenna port information.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The terminal device sends a channel state information CSI report to the network device, wherein the CSI report is used by the network device to determine a target SSB index, and the index of the SSB sent by the network device is the target SSB index.

9. The method according to claim 8, characterized in that The target SSB index is one or more indexes among the candidate SSB indexes.

10. The method according to any one of claims 1 to 9, characterized in that The method further comprises: The terminal device receives information about candidate SSB indexes sent by the network device, wherein the receiving direction is a direction corresponding to one or more indexes among the candidate SSB indexes.

11. The method according to claim 10, characterized in that The candidate SSB index information is carried in one or more of the following: SSB configuration information sent by network devices; SSB activation information sent by network devices; Configuration information of the secondary cell sent by the network device; Activation information of the secondary cell sent by the network device.

12. The method according to any one of claims 1 to 11, characterized in that The method further comprises: The terminal device receives the correspondence between the SSB index sent by the network device and the receiving direction of the SSB, wherein the correspondence is used to determine the SSB index corresponding to the receiving direction.

13. A wireless communication method, characterized in that: The method comprises: A transceiver unit is used to send a synchronization signal broadcast channel block SSB to a terminal device, wherein the receiving direction of the SSB is indicated by second information, the second information is determined based on first information, and the first information is information associated with the direction.

14. The method according to claim 13, characterized in that The second information includes: the receiving direction of the SSB; and / or, The SSB index of the SSB.

15. The method according to claim 13 or 14, characterized in that The first information includes channel state information CSI.

16. The method according to claim 15, characterized in that The second information includes a direction corresponding to a channel having an optimal channel state indicated by the CSI.

17. The method according to claim 15 or 16, characterized in that The first information includes a transmission configuration indication TCI state.

18. The method according to claim 17, characterized in that The second information is determined based on the direction information carried in the TCI state.

19. The method according to claim 18, characterized in that The directional information carried in the TCI state includes one or more of the following: SSB index; directional information of the channel state information reference signal CSI-RS; beam information; antenna port information.

20. The method according to any one of claims 13 to 19, characterized in that The method further comprises: The network device receives a channel state information CSI report sent by the terminal device, wherein the CSI report is used by the network device to determine a target SSB index, and the index of the SSB sent by the network device is the target SSB index.

21. The method according to claim 20, characterized in that The target SSB index is one or more indexes among the candidate SSB indexes.

22. The method according to any one of claims 13 to 21, characterized in that The method further comprises: The network device sends information about candidate SSB indexes to the terminal device, wherein the receiving direction is a direction corresponding to one or more indexes among the candidate SSB indexes.

23. The method according to claim 22, characterized in that The terminal device is located in a secondary cell, and the information of the candidate SSB index is determined based on the position information of the terminal device relative to the secondary base station corresponding to the secondary cell.

24. The method according to claim 23, characterized in that The position information of the terminal device relative to the secondary base station is determined based on one or more of the following: Location information of a primary base station corresponding to a primary cell of the terminal device; The position information of the terminal device relative to the primary base station; The location information of the secondary base station corresponding to the secondary cell.

25. The method according to any one of claims 22 to 24, characterized in that The candidate SSB index information is carried in one or more of the following: SSB configuration information sent by network devices; SSB activation information sent by network devices; Configuration information of the secondary cell sent by the network device; Activation information of the secondary cell sent by the network device.

26. The method according to any one of claims 13 to 25, characterized in that The method further comprises: The network device sends the correspondence between the SSB index and the receiving direction of the SSB to the terminal device, wherein the correspondence is used to determine the SSB index corresponding to the receiving direction.

27. A terminal device, characterized in that: include: A processing unit, used to determine second information based on first information, wherein the first information is information associated with a direction, and the second information is used to indicate a receiving direction of a synchronization signal broadcast channel block SSB.

28. The terminal device according to claim 27, characterized in that: The second information includes: the receiving direction of the SSB; and / or, The SSB index of the SSB.

29. The terminal device according to claim 27 or 28, characterized in that: The first information includes channel state information CSI.

30. The terminal device according to claim 29, characterized in that: The second information includes a direction corresponding to a channel having an optimal channel state indicated by the CSI.

31. The terminal device according to claim 29 or 30, characterized in that: The first information includes a transmission configuration indication TCI state.

32. The terminal device according to claim 31, characterized in that: The second information is determined based on the direction information carried in the TCI state.

33. The terminal device according to claim 32, characterized in that: The directional information carried in the TCI state includes one or more of the following: SSB index; directional information of the channel state information reference signal CSI-RS; beam information; antenna port information.

34. The terminal device according to any one of claims 27 to 33, characterized in that: The terminal device further includes a transceiver unit, which is used for: Send a channel state information CSI report to the network device, wherein the CSI report is used by the network device to determine a target SSB index, and the index of the SSB sent by the network device is the target SSB index.

35. The terminal device according to claim 34, characterized in that: The target SSB index is one or more indexes among the candidate SSB indexes.

36. The terminal device according to any one of claims 27 to 35, characterized in that: The terminal device further includes a transceiver unit, which is used for: Receive information about candidate SSB indexes sent by the network device, wherein the receiving direction is a direction corresponding to one or more indexes among the candidate SSB indexes.

37. The terminal device according to claim 36, characterized in that: The candidate SSB index information is carried in one or more of the following: SSB configuration information sent by network devices; SSB activation information sent by network devices; Configuration information of the secondary cell sent by the network device; Activation information of the secondary cell sent by the network device.

38. The terminal device according to any one of claims 27 to 37, characterized in that: The terminal device further includes a transceiver unit, which is used for: Receive the correspondence between the SSB index sent by the network device and the receiving direction of the SSB, wherein the correspondence is used to determine the SSB index corresponding to the receiving direction.

39. A network device, characterized in that: include: A transceiver unit is used to send a synchronization signal broadcast channel block SSB to a terminal device, wherein the receiving direction of the SSB is indicated by second information, the second information is determined based on first information, and the first information is information associated with the direction.

40. The network device according to claim 39, characterized in that: The second information includes: the receiving direction of the SSB; and / or, The SSB index of the SSB.

41. The network device according to claim 39 or 40, characterized in that: The first information includes channel state information CSI.

42. The network device according to claim 41, characterized in that The second information includes a direction corresponding to a channel having an optimal channel state indicated by the CSI.

43. The network device according to claim 41 or 42, characterized in that: The first information includes a transmission configuration indication TCI state.

44. The network device according to claim 43, characterized in that The second information is determined based on the direction information carried in the TCI state.

45. The network device according to claim 44, characterized in that The directional information carried in the TCI state includes one or more of the following: SSB index; directional information of the channel state information reference signal CSI-RS; beam information; antenna port information.

46. ​​The network device according to any one of claims 39 to 45, characterized in that: The transceiver unit is also used for: Receive a channel state information CSI report sent by the terminal device, wherein the CSI report is used by the network device to determine a target SSB index, and the index of the SSB sent by the network device is the target SSB index.

47. The network device according to claim 46, characterized in that The target SSB index is one or more indexes among the candidate SSB indexes.

48. The network device according to any one of claims 39 to 47, characterized in that: The transceiver unit is also used for: Send information about candidate SSB indexes to the terminal device, wherein the receiving direction is a direction corresponding to one or more indexes among the candidate SSB indexes.

49. The network device according to claim 48, characterized in that The terminal device is located in a secondary cell, and the information of the candidate SSB index is determined based on the position information of the terminal device relative to the secondary base station corresponding to the secondary cell.

50. The network device according to claim 49, characterized in that The position information of the terminal device relative to the secondary base station is determined based on one or more of the following: Location information of a primary base station corresponding to a primary cell of the terminal device; The position information of the terminal device relative to the primary base station; The location information of the secondary base station corresponding to the secondary cell.

51. The network device according to any one of claims 48 to 50, characterized in that: The candidate SSB index information is carried in one or more of the following: SSB configuration information sent by network devices; SSB activation information sent by network devices; Configuration information of the secondary cell sent by the network device; Activation information of the secondary cell sent by the network device.

52. The network device according to any one of claims 39 to 51, characterized in that: The transceiver unit is also used for: The correspondence between the SSB index and the receiving direction of the SSB is sent to the terminal device, wherein the correspondence is used to determine the SSB index corresponding to the receiving direction.

53. A terminal device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the terminal device executes the method according to any one of claims 1 to 12.

54. A network device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method according to any one of claims 13 to 26.

55. A device, characterized in that The device comprises a processor, configured to call a program from a memory so as to enable the device to execute the method according to any one of claims 1 to 26.

56. A chip, characterized in that: The device comprises a processor, configured to call a program from a memory, so that a device equipped with the chip executes a method according to any one of claims 1 to 26.

57. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 26.

58. A computer program product, characterized in that A program is included, which causes a computer to execute the method according to any one of claims 1 to 26.

59. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 26.

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