Wireless communication method and communication apparatus

Abstract

Provided in the present application are a wireless communication method and a communication apparatus, which enable an SSB to better match a communication scenario in which user service distribution is unbalanced. The method comprises: acquiring first configuration information, wherein the first configuration information comprises SSB configurations of one or more cycles; and on the basis of the SSB configurations of the one or more cycles, receiving an SSB sent by a network device, wherein a sending cycle of the SSB is a cycle formed by combining the one or more cycles.

Description

Wireless communication method and communication apparatus

[0001] The present application claims priority from the Chinese patent application No. 202410868645.0 filed with the State Intellectual Property Office of China on June 28, 2024 and entitled "Wireless communication method and communication apparatus", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of wireless communication, in particular to a wireless communication method and a communication apparatus. BACKGROUND

[0003] In some communication systems, there is a situation of unbalanced distribution of user traffic. For example, for a non-terrestrial network (NTN) communication system, the traffic of NTN users presents extremely unbalanced distribution characteristics at different times and in different areas. For example, in areas such as oceans and deserts where the population is sparse, the number of users is small and the traffic demand of users is low. For areas such as cities where the population is dense, the number of users is large and the traffic demand of users is high. For example, for the same area, the traffic demand of users is high during the day, and the traffic demand of users is low at night.

[0004] For the scenario of unbalanced distribution of user traffic, how to send a synchronization signal / physical broadcast channel block (SSB) to better match this scenario is not clear at present. SUMMARY

[0005] The present application provides a wireless communication method and a communication apparatus, so that the SSB can better match the communication scenario of unbalanced distribution of traffic.

[0006] In a first aspect, a wireless communication method is provided, comprising: obtaining first configuration information, wherein the first configuration information comprises one or more periodic synchronization signal / physical broadcast channel block (SSB) configurations; and receiving an SSB sent by a network device based on the one or more periodic SSB configurations, wherein the sending period of the SSB is a period formed by one or more periodic combinations.

[0007] The embodiment of the application sets the SSB with a variable period, that is, the transmission period of the SSB is a period formed by one or more period combinations, so that the transmission period of the SSB can be flexibly adjusted according to the distribution of user services. For example, when the user service demand is high, the transmission period of the SSB can be reduced, and when the user service demand is low, the transmission period of the SSB can be increased, so that the service demand of the user can be met, the communication capability of the network can be fully utilized, and the waste of network resources can be avoided.

[0008] In some possible implementation ways, the transmission mode of the SSB belongs to one or more of the following modes: a first mode; a second mode; a third mode, which is a mode formed by combining the first mode and the second mode; wherein the first mode is transmitted in a mode in which the one or more periods are connected in series, and the second mode is transmitted in a mode in which the one or more periods are superimposed.

[0009] By setting multiple transmission modes, the flexibility of SSB transmission can be improved, and the matching of SSB and the mobile communication scene with uneven service distribution can be further improved.

[0010] In some possible implementation ways, the transmission mode of the SSB includes the first mode, the one or more periods include a first period, and the first configuration information further includes one or more of the following parameters: a first parameter, used to indicate the period length of the first period; a second parameter, used to indicate the duration of the first period in a second period; a first offset, used to indicate the offset of the starting position of the first period; and a second offset, used to indicate the offset of the starting position of the second period; wherein the second period is a period formed after the one or more periods are connected in series.

[0011] By carrying the parameters required by the first mode in the first configuration information, the terminal device can determine the reception position of the SSB.

[0012] In some possible implementation ways, the starting position of the second period satisfies the following formula:

[0013] wherein n f is the system frame number in which the starting position of the second period is located, L is the number of time units contained in a single system frame, n hf is the time unit sequence number of the starting position of the second period in the system frame, T offset is the second offset, M is the total number of the one or more periods, is the duration of the i-th period in the one or more periods, , where mod denotes a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0014] By the above formula, the terminal device can quickly determine the starting position of the second type of period, thereby simplifying the operation of the terminal device.

[0015] In some possible implementation manners, when i = 0, the starting position of the i-th type of period is the starting position of the second type of period; when i ≥ 1, is an offset value of the starting position of the i-th type of period relative to the ending position of the (i-1)-th type of period.

[0016] In this way, the meaning of the first offset is clear, so that the terminal device and the network device have consistent understanding of the first offset, thereby improving the success rate of the terminal device receiving the SSB.

[0017] In some possible implementation manners, the transmission mode of the SSB includes the second mode, the one or more types of periods include a third type of period, and the first configuration information further includes one or more of the following parameters: a third parameter, used to indicate a period length of the third type of period; and a third offset, used to indicate an offset of a starting position of the third type of period.

[0018] By carrying the parameters required by the second mode in the first configuration information, the terminal device can determine the receiving position of the SSB.

[0019] In some possible implementation manners, the starting position of a j-th type of period in the one or more types of periods satisfies the following formula:

[0020] where n fj is a system frame number in which the starting position of the j-th type of period is located, L is a number of time units included in a single system frame, n hfj is a time unit sequence number of the starting position of the j-th type of period in the system frame, is an offset of the starting position of the j-th type of period, T j is a period length of the j-th type of period, and mod denotes a modulo operation.

[0021] By the above formula, the terminal device can quickly determine the starting position of each type of period, thereby simplifying the operation of the terminal device.

[0022] In some possible implementation manners, the one or more periodic SSB configurations include one or more sets of SSB configurations, one set of SSB configurations in the one or more sets of SSB configurations includes one or more periodic SSB configurations, and the first configuration information further includes one or more timers, respectively used to control the validity duration of the one or more sets of SSB configurations.

[0023] The embodiments of the present application control the validity of one set of SSB configurations through one timer, so that the duration and / or starting state of the timer can be flexibly adjusted according to actual needs, so as to change the sending time and frequency of SSBs, so that the sending period of SSBs is more matched with the actual needs of terminal devices, and can meet the scene of unbalanced and dynamically changing user service demand distribution.

[0024] In some possible implementation manners, if the sending mode of the SSBs is the first mode, the one set of SSB configurations includes one periodic SSB configuration; or if the sending mode of the SSBs includes the second mode, the one set of SSB configurations includes at least two periodic SSB configurations.

[0025] For different sending modes, the embodiments of the present application explicitly indicate the number of SSB configurations included in one set of SSB configurations under each sending mode, so that the one set of SSB configurations is matched with the sending mode of the SSBs.

[0026] In some possible implementation manners, the one or more timers satisfy any one of the following conditions: if the sending mode of the SSBs is the first mode, only one timer in the one or more timers is in a starting state at the same time; if the sending mode of the SSBs is the second mode, one or at least two timers in the one or more timers are in a starting state at the same time; if the sending mode of the SSBs is the third mode, at least two timers in the one or more timers are in a starting state at the same time, the at least two timers include a first timer and a second timer, the first timer corresponds to the first mode, and the second timer corresponds to the second mode.

[0027] For different modes, the embodiments of the present application explicitly indicate the starting state of the timer or the number of timers started under each sending mode, so that the starting of the timer is matched with the sending mode of the SSBs.

[0028] In some possible implementation manners, the number of the one or more sets of SSB configurations is N, and the number of the one or more timers is N, where the one or more sets of SSB configurations and the one or more timers satisfy the following conditions: when the pth timer starts, the pth set of SSB configurations takes effect; when the pth timer expires, the pth set of SSB configurations is invalid, if p is less than N, the (p+1)th set of SSB configurations takes effect, and the (p+1)th timer starts, if p is equal to N, the Nth set of SSB configurations is invalid, the first set of SSB configurations takes effect, and the first timer starts; where N is a positive integer, and p is an integer greater than or equal to 1 and less than or equal to N.

[0029] The embodiments of the present application can realize the sequential execution of the multiple sets of SSB configurations by controlling the sequential starting of the multiple timers, thereby reducing the complexity of the terminal device in receiving the SSB and reducing the complexity of the network device in sending the SSB.

[0030] In some possible implementation manners, the SSB is sent in a mode of being sent in series according to the first mode, the second mode and the third mode, the multiple timers include a third timer, a fourth timer and a fifth timer, the third timer is used to control the effective duration of the first mode, the fourth timer is used to control the effective duration of the second mode, and the fifth timer is used to control the effective duration of the third mode.

[0031] The embodiments of the present application can flexibly combine the three modes by controlling the effective duration of the three modes by the three timers, so as to realize the flexible transmission of the SSB.

[0032] In some possible implementation manners, the multiple timers satisfy the following conditions: at the same time, only one of the third timer, the fourth timer and the fifth timer is in a starting state.

[0033] The embodiments of the present application can realize the alternative execution of the three modes and the series connection of the three modes by controlling the third timer, the fourth timer and the fifth timer to be in the starting state at the same time.

[0034] In some possible implementation manners, the receiving of the SSB sent by the network device based on the one or more periodic SSB configurations includes: determining the effective SSB configuration according to one or more of the following information: the one or more periodic SSB configurations, and the one or more timers; and receiving the SSB sent by the network device based on the effective SSB configuration.

[0035] The embodiments of the present application can control the SSB configuration used by the terminal device by the effective SSB configuration, which is beneficial to improving the flexibility of the terminal device in using the SSB configuration.

[0036] In some possible implementation manners, the first configuration information further includes first indication information, where the first indication information is used to indicate a transmission mode of the SSB.

[0037] By indicating the transmission mode of the SSB through the first indication information, the complexity of determining the transmission mode of the SSB by the terminal device can be reduced.

[0038] In some possible implementation manners, the one or more periodic SSB configurations are related to a region where the terminal device is located and / or a beam.

[0039] Generally, the user service demands of different regions are quite different. By setting the first configuration information related to the region, the first configuration information can be matched with the user service demand of the corresponding region, and the user service demand of the region can be met.

[0040] In addition, there is a certain corresponding relationship between the beam and the region, that is, the user service demands corresponding to different beams can also be different. By setting the first configuration information related to the beam, the first configuration information can be matched with the user service demand of the corresponding beam, and the user service demand corresponding to the beam can be met.

[0041] In some possible implementation manners, the method further includes: obtaining a plurality of configuration information, where the plurality of configuration information are respectively related to a plurality of beams and / or a plurality of regions; and determining the first configuration information from the plurality of configuration information based on a region where the terminal device is located and an association relationship between the plurality of configuration information and the plurality of beams and / or the plurality of regions.

[0042] The terminal device can determine the first configuration information corresponding to the region where the terminal device is located according to the association relationship between the plurality of configuration information and the plurality of beams and / or the plurality of regions, so that the determined first configuration information can be matched with the region where the terminal device is located, and the service demand of the terminal device can be met.

[0043] In some possible implementation manners, the obtaining of the first configuration information includes: receiving the first configuration information sent by the network device.

[0044] In some possible implementation manners, the first configuration information is carried in a system information block (SIB) message or radio resource control (RRC) signaling.

[0045] In some possible implementation manners, the first configuration information is predefined through a protocol.

[0046] In a second aspect, a wireless communication method is provided, including: sending, to a terminal device, first configuration information, the first configuration information including one or more periodic synchronization signal / physical broadcast channel block (SSB) configurations; and sending, to the terminal device, an SSB based on the one or more periodic SSB configurations, the SSB being sent at a period formed by one or more periodic combinations.

[0047] In some possible implementation manners, the sending mode of the SSB belongs to one or more of the following modes: a first mode; a second mode; a third mode, the third mode being a mode formed by a combination of the first mode and the second mode; wherein the first mode is to be sent in a manner that the one or more periods are concatenated with each other, and the second mode is to be sent in a manner that the one or more periods are superimposed on each other.

[0048] In some possible implementation manners, the sending mode of the SSB includes the first mode, the one or more periods include a first period, and the first configuration information further includes one or more of the following parameters: a first parameter, used to indicate a period length of the first period; a second parameter, used to indicate a duration of the first period within a second period; a first offset, used to indicate an offset of a starting position of the first period; and a second offset, used to indicate an offset of a starting position of the second period, wherein the second period is a period formed after the one or more periods are concatenated with each other.

[0049] In some possible implementation manners, the starting position of the second period satisfies the following formula:

[0050] wherein n f is a system frame number in which the starting position of the second period is located, L is a number of time units contained in a single system frame, n hf is a time unit sequence number of the starting position of the second period in the system frame, T offset is the second offset, M is a total number of the one or more periods, is a duration of an i-th period in the one or more periods, is an offset of the i-th period in the one or more periods, mod represents a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0051] In some possible implementation manners, when i=0, the starting position of the i-th period is the starting position of the second period; and when i≥1, is an offset value of the starting position of the i-th period relative to an ending position of an (i-1)-th period.

[0052] In some possible implementation manners, the transmission mode of the SSBs comprises the second mode, the one or more periods comprise a third period, and the first configuration information further comprises one or more of the following parameters: a third parameter, used to indicate a period length of the third period; and a third offset, used to indicate an offset of a starting position of the third period.

[0053] In some possible implementation manners, a starting position of a jth period in the one or more periods satisfies the following formula:

[0054] wherein n fj is a system frame number in which the starting position of the jth period is located, L is a number of time units contained in a single system frame, n hfj is a time unit sequence number of the starting position of the jth period in the system frame, is an offset of the starting position of the jth period, T j is a period length of the jth period, and mod represents a modulo operation, and j is 0 or a positive integer.

[0055] In some possible implementation manners, the SSB configuration of the one or more periods comprises one or more sets of SSB configurations, one set of SSB configurations in the one or more sets of SSB configurations comprises SSB configuration of one or more periods, and the first configuration information further comprises one or more timers, which are respectively used to control a validity duration of the one or more sets of SSB configurations.

[0056] In some possible implementation manners, if the transmission mode of the SSBs is the first mode, the one set of SSB configurations comprises SSB configuration of one period; or if the transmission mode of the SSBs comprises the second mode, the one set of SSB configurations comprises SSB configuration of at least two periods.

[0057] In some possible implementation manners, the one or more timers satisfy any one of the following conditions: if the transmission mode of the SSBs is the first mode, only one timer in the one or more timers is in a started state at the same time; if the transmission mode of the SSBs is the second mode, one or at least two timers in the one or more timers are in the started state at the same time; if the transmission mode of the SSBs is the third mode, at least two timers in the one or more timers are in the started state at the same time, the at least two timers comprise a first timer and a second timer, the first timer corresponds to the first mode, and the second timer corresponds to the second mode.

[0058] In some possible implementation manners, the number of the one or more sets of SSB configurations is N, and the number of the one or more timers is N, where the one or more sets of SSB configurations and the one or more timers satisfy the following conditions: when the pth timer starts, the pth set of SSB configurations takes effect; when the pth timer expires, the pth set of SSB configurations is invalid, if p is less than N, the (p+1)th set of SSB configurations takes effect, and the (p+1)th timer starts, if p is equal to N, the Nth set of SSB configurations is invalid, the 1st set of SSB configurations takes effect, and the 1st timer starts; where N is a positive integer, and p is an integer greater than or equal to 1 and less than or equal to N.

[0059] In some possible implementation manners, the transmission mode of the SSBs is a mode of being transmitted in series according to the first mode, the second mode, and the third mode, the plurality of timers includes a third timer, a fourth timer, and a fifth timer, the third timer is configured to control a duration for which the first mode takes effect, the fourth timer is configured to control a duration for which the second mode takes effect, and the fifth timer is configured to control a duration for which the third mode takes effect.

[0060] In some possible implementation manners, the plurality of timers satisfy the following condition: at the same time, only one of the third timer, the fourth timer, and the fifth timer is in a started state.

[0061] In some possible implementation manners, the SSBs are transmitted to the terminal device based on the one or more periodic SSB configurations, including: determining an effective SSB configuration according to one or more of the following information: the one or more periodic SSB configurations, and the one or more timers; and transmitting the SSBs to the terminal device based on the effective SSB configuration.

[0062] In some possible implementation manners, the first configuration information further includes first indication information, and the first indication information is used to indicate the transmission mode of the SSBs.

[0063] In some possible implementation manners, the one or more periodic SSB configurations are related to a beam and / or a region in which the terminal device is located.

[0064] In some possible implementation manners, the method further includes: transmitting, to the terminal device, a plurality of configuration information, the plurality of configuration information being respectively related to a plurality of beams and / or a plurality of regions, and the plurality of configuration information including the first configuration information.

[0065] In some possible implementation manners, the first configuration information is carried in a system information block (SIB) message or radio resource control (RRC) signaling.

[0066] In a third aspect, a communication apparatus is provided, which comprises a unit of software and / or hardware, configured to execute any of the methods in the technical solutions of the first aspect.

[0067] In a fourth aspect, a communication apparatus is provided, which comprises a unit of software and / or hardware, configured to execute any of the methods in the technical solutions of the second aspect.

[0068] In a fifth aspect, a chip is provided, which comprises a processor; the processor is configured to read and execute a computer program stored in a memory, so as to execute any of the methods in the technical solutions of the first aspect.

[0069] Optionally, the chip further comprises the memory, which is connected with the processor through a circuit or a wire.

[0070] Further optionally, the chip further comprises a communication interface.

[0071] In a sixth aspect, a chip is provided, which comprises a processor; the processor is configured to read and execute a computer program stored in a memory, so as to execute any of the methods in the technical solutions of the second aspect.

[0072] Optionally, the chip further comprises the memory, which is connected with the processor through a circuit or a wire.

[0073] Further optionally, the chip further comprises a communication interface.

[0074] In a seventh aspect, a terminal device is provided, which comprises a processor, a memory and an interface; the processor, the memory and the interface cooperate with each other, so that the terminal device executes any of the methods in the technical solutions of the first aspect; or comprises any of the chips in the fifth aspect.

[0075] In an eighth aspect, a network device is provided, which comprises a processor, a memory and an interface; the processor, the memory and the interface cooperate with each other, so that the network device executes any of the methods in the technical solutions of the second aspect; or comprises any of the chips in the sixth aspect.

[0076] In a ninth aspect, a computer readable storage medium is provided, which stores a computer program; when the computer program is executed by a processor, the processor executes any of the methods in the technical solutions of the first aspect or the second aspect.

[0077] In a tenth aspect, a computer program product is provided, which comprises computer program code; when the computer program code runs on an electronic device, the electronic device executes any of the methods in the technical solutions of the first aspect or the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0078] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0079] FIG. 2 is a schematic diagram of a time-frequency structure of an SSB;

[0080] FIG. 3 is a flowchart of a cell search procedure of a terminal device;

[0081] FIG. 4 is a schematic diagram of an NTN communication scenario;

[0082] FIG. 5 is a schematic flowchart of a wireless communication method according to an embodiment of the present application;

[0083] FIG. 6 is a schematic diagram of a first pattern according to an embodiment of the present application;

[0084] FIG. 7 is a schematic diagram of a second pattern according to an embodiment of the present application;

[0085] FIG. 8 is a schematic diagram of a generation manner of a third pattern according to an embodiment of the present application;

[0086] FIG. 9 is a schematic diagram of a combination manner of the first pattern, the second pattern, and the third pattern according to an embodiment of the present application;

[0087] FIG. 10 is a schematic diagram of another combination manner of the first pattern, the second pattern, and the third pattern according to an embodiment of the present application;

[0088] FIG. 11 is a schematic diagram of a combination manner of the first pattern and the third pattern according to an embodiment of the present application;

[0089] FIG. 12 is a schematic diagram of a combination manner of the second pattern and the third pattern according to an embodiment of the present application;

[0090] FIG. 13 is a schematic block diagram of a communication apparatus according to an embodiment of the present application;

[0091] FIG. 14 is a schematic block diagram of another communication apparatus according to an embodiment of the present application;

[0092] FIG. 15 is a schematic structural diagram of an apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0093] FIG. 1 is a schematic diagram of an architecture of a communication system 1000 to which embodiments of the present application are applied. As shown in FIG. 1, the communication system includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1, collectively referred to as 110), and can further include at least one terminal device (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1). The terminal devices 120 are wirelessly connected to the RAN nodes 110. The terminal devices and the terminal devices, and the RAN nodes and the RAN nodes can be connected to each other by wireline or wirelessly. The communication system 1000 can further include a core network 200. The RAN nodes 110 are connected to the core network 200 wirelessly or by wire. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device integrated with the logical functions of the core network devices and the logical functions of the RAN nodes. The communication system 1000 can further include an Internet 300.

[0094] The RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, and a future wireless access system defined in the 3rd generation partnership project (3GPP). The RAN 100 can also include two or more different wireless access systems described above. The RAN 100 can also be an open RAN (O-RAN).

[0095] A RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is configured to help a terminal device access a communication system through wireless means. In one application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (e.g., 110a in FIG. 1), a micro base station or an indoor station (e.g., 110b in FIG. 1), or a relay node or a donor node.

[0096] In another application scenario, a terminal device can access a communication system through wireless means by cooperation of multiple RAN nodes, and different RAN nodes implement part of functions of a base station. For example, the RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). Here, the CU implements functions of a radio resource control protocol and a packet data convergence protocol (PDCP) of a base station, and can also implement a function of a service data adaptation protocol (SDAP). The DU implements functions of a radio link control layer and a medium access control (MAC) layer of a base station, and can also implement part of functions of a physical layer or all functions of a physical layer. For details of the protocol layers, refer to relevant technical specifications of 3GPP. The RU can be configured to implement functions of transceiving a radio frequency signal. The CU and the DU can be two independent RAN nodes, or can be integrated in the same RAN node, e.g., integrated in a baseband unit (BBU). The RU can be included in a radio frequency device, e.g., included in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes, i.e., a CU-control plane and a CU-user plane.

[0097] The RAN node can have different names in different systems, for example, in an O-RAN system, the CU can be referred to as an open CU (O-CU), the DU can be referred to as an open DU (O-DU), and the RU can be referred to as an open RU (O-RU). The RAN node in the embodiments of the present application can 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 can 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 of the RAN node. For ease of description, a base station is described as an example of the RAN node in the following.

[0098] The terminal device is a device with wireless transceiving function, which can send signals to the base station or receive signals from the base station. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal device can be widely applied in various scenarios, such as device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-type communication (MTC), internet of things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, tablet computer, computer with wireless transceiving function, wearable device, vehicle, airplane, ship, robot, mechanical arm, smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form of the terminal device.

[0099] The base station and the terminal device can be fixed in position or movable. The base station and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; can also be deployed on airplanes, balloons and artificial satellites. The embodiments of the present application do not limit the application scenarios of the base station and the terminal device.

[0100] The roles of the base station and the terminal device can be relative. For example, the helicopter or the drone 120i in FIG. 1 can be configured as a mobile base station, and for the terminal device 120j that accesses the wireless access network 100 through 120i, 120i is a base station; but for the base station 110a, 120i is a terminal device, that is, 110a communicates with 120i through a wireless air interface protocol. Of course, 110a and 120i can also communicate through a base station-to-base station interface protocol, and in this case, 120i is also a base station relative to 110a. Therefore, the base station and the terminal device can be collectively referred to as a communication device, and 110a and 110b in FIG. 1 can be referred to as a communication device with a base station function, and 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.

[0101] The base station and the terminal device, the base station and the base station, and the terminal device and the terminal device can communicate through a licensed spectrum, can communicate through an unlicensed spectrum, or can communicate through both the licensed spectrum and the unlicensed spectrum; can communicate through a spectrum below 6 gigahertz (GHz), can communicate through a spectrum above 6 GHz, or can communicate through both the spectrum below 6 GHz and the spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0102] In the embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station or by a control subsystem containing base station functions. The control subsystem containing base station functions herein can be a control center in the above-mentioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of the terminal device can also be performed by a module (such as a chip or a modem) in the terminal device or by a device containing terminal device functions.

[0103] The SSB is one of the most important pilot signals used in a communication system, and its role is related to many aspects of terminal device access to a cell, such as cell selection, time-frequency synchronization, radio resource management (RRM) measurement, and the like.

[0104] Time-frequency domain structure of SSB

[0105] Taking a 5G communication system as an example, the SSB includes a synchronization signal and a broadcast signal. The synchronization signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and the broadcast signal includes physical broadcast channel (PBCH) data and a PBCH demodulation reference signal (DMRS) signal.

[0106] The time-frequency domain structure of the SSB is shown in FIG. 2. The SSB occupies 4 symbols in the time domain and 20 resource blocks (RBs) in the frequency domain, i.e., 240 subcarriers. One RB occupies 12 subcarriers in the frequency domain and 1 symbol in the time domain. One RB includes 12 resource elements (REs), and one RE occupies 1 subcarrier in the frequency domain and 1 symbol in the time domain. The above-mentioned symbol can be an orthogonal frequency division multiplexing (OFDM) symbol.

[0107] Referring to FIG. 2, the PSS is located on symbol 0 of the SSB and occupies 127 REs in the frequency domain. The remaining REs of symbol 0 are empty and cannot be used to schedule other channels or signals.

[0108] The SSS is located on symbol 2 of the SSB and occupies 127 REs in the frequency domain. The remaining REs are used for the PBCH and a guard band.

[0109] The PBCH is located on the last three symbols of the SSB. The PBCH is transmitted in the full bandwidth of symbol 1 and symbol 3 of the SSB. On symbol 2, the upper and lower ends of the SSS are spaced apart from the PBCH by 9 and 8 REs, respectively. This design is to reserve a certain guard interval between the SSS and the PBCH signal to suppress inter-subcarrier interference.

[0110] The SSB is periodically transmitted, and its period can vary from 5 ms to 160 ms. When performing cell search, a terminal device cannot wait for too long time on a certain frequency point, and therefore, by default, transmission is performed at 20 ms. If the terminal device waits for 20 ms on a certain frequency point and still does not find the SSB, it is considered that there is no carrier on this frequency point, and then the terminal device turns to the next frequency point in the synchronization raster to try again.

[0111] The transmission time of each SSB in each transmission period is limited within a half frame of 5 ms, and the number of repetitions is related to the frequency band and subcarrier width used by the communication system. The number of repetitions is at least 4 and at most 64. For example, in a 30 kHz subcarrier configuration, the carrier frequency band is 3 GHz-6 GHz, and each SSB can be repeatedly transmitted 8 times.

[0112] Some communication systems, such as 5G communication systems, introduce beamforming. In actual use, different SSBs in a period can be assigned to different beams for transmission. The transmission time of each SSB is different, and multiple SSBs in a period are transmitted in turn, so this method can be called SSB beam sweeping, and the set of SSBs participating in beam sweeping can be called an SS burst set. Since the energy of the beam is more concentrated, the use of beam sweeping can enhance the coverage of the communication system.

[0113] For a period, the number of SSB transmissions supported by different frequency bands is different, so the beamforming capability of different frequency bands is also different. Generally, the higher the frequency band, the stronger the beamforming capability.

[0114] For example, for a frequency band below 3 GHz, a maximum of 4 SSBs are included in an SS burst set, so a maximum of 4 beams can be scanned in a period; for a frequency band of 3 GHz-6 GHz, a maximum of 8 SSBs are included in an SS burst set, so a maximum of 8 beams can be scanned in a period; for a millimeter wave frequency band above 6 GHz, a maximum of 64 SSBs are included in an SS burst set, so a maximum of 64 beams can be scanned in a period.

[0115] After the terminal device is powered on, it will perform a cell search and a random access process to access a cell. This process is mainly based on downlink synchronization channel and signal detection. Through this process, the terminal device can obtain the cell identity (ID), frequency synchronization, and downlink time synchronization. The entire process of cell search can include PSS search, SSS detection, PBCH detection, and remaining minimum system information (RMSI) detection, as shown in FIG. 3.

[0116] The terminal device first searches for the PSS, completes OFDM symbol boundary synchronization, coarse frequency synchronization, and obtains the cell identity 2. The terminal device can detect the PSS at each frequency point of the synchronization signal frequency grid.

[0117] After searching for PSS, the terminal device can further detect SSS to obtain cell identity 1. According to identity 1 and identity 2, the terminal device can calculate a physical cell identifier (PCI). At this point, the terminal device can have the ability to parse the system messages contained in the SSB.

[0118] After searching for PSS and detecting SSS, the terminal device starts receiving PBCH, which can carry the system messages in the SSB. Since these system messages are necessary for the terminal device to access the network, these messages can also be referred to as a main information block (MIB).

[0119] The MIB contains one or more of the following information: system frame number, initial access subcarrier spacing, whether the cell is locked, and other system messages (such as system information block (SIB) 1).

[0120] In order to access the cell, the terminal device needs to obtain not only the MIB but also some other system messages, such as the remaining minimum system information (RMSI), which can include SIB1.

[0121] SIB1 is transmitted on a physical downlink shared channel (PDSCH) with a period of 160 ms. The terminal device can obtain the parameter set used for SIB1 transmission and the control resource distribution of SIB1 scheduling from the MIB carried by the PBCH, so the terminal device can obtain SIB1 according to the MIB. After obtaining the MIB and SIB1, the terminal device can access the network.

[0122] RRM measurement

[0123] Due to the mobility of the terminal device, the terminal device can move from the coverage of one cell to the coverage of another cell. In order to ensure the service continuity and communication quality of the terminal device, the terminal device can perform RRM measurement to achieve cell reselection or cell handover.

[0124] For a terminal device in a radio resource control inactive (RRC-INACTIVE) state and a radio resource control idle (RRC-IDLE) state, the terminal device can perform RRM measurement, and perform cell reselection based on the RRM measurement result. For a terminal device in a radio resource control connected (RRC_CONNECTED) state, the terminal device can perform RRM measurement, and report the measurement result to a network device. The network device can control the terminal device to perform cell switching based on the signal measurement result.

[0125] In performing the RRM measurement, the terminal device can perform RRM measurement on a plurality of cells (such as a serving cell and at least one neighbor cell), and obtain signal measurement results of the plurality of cells. The signal measurement results of the plurality of cells can be used for performing cell reselection or cell switching. For example, in performing cell reselection, the terminal device can select a cell with good signal quality to access. For another example, in performing cell switching, the terminal device can switch from a serving cell to a target cell with better signal quality.

[0126] The RRM measurement can be SSB-based RRM measurement. The terminal device obtains the signal measurement result by performing measurement on the SSB.

[0127] The signal measurement result can include at least one of a measurement result of reference signal receiving power (RSRP), a measurement result of reference signal receiving quality (RSRQ), and a measurement result of signal to interference plus noise ratio (SINR).

[0128] NTN communication system

[0129] For terrestrial network communication, scenarios such as oceans, mountains, deserts, and the like cannot be covered by land communication. Or, considering the cost of communication equipment construction and operation, land communication usually does not cover sparsely populated areas. Therefore, terrestrial network communication cannot provide seamless coverage. NTN communication is considered an important aspect of future wireless communication technology development.

[0130] An NTN communication system provides communication services to users in a non-terrestrial manner. The non-terrestrial manner can include, for example, a satellite or an unmanned aircraft system (UAS) platform. A satellite communication system can include a satellite part and a ground part. NTN communication can refer to communication by a radio communication device on the ground using a satellite as a relay.

[0131] Compared with terrestrial network (TN) communication, NTN has many advantages.

[0132] First, NTN communication can not be limited by the user's region. For an NTN communication network, there is no regional limitation and coverage can be extended. For areas that cannot be covered by current cellular communication systems or have high coverage costs, such as oceans, deserts, remote mountainous areas, etc., NTN communication networks can solve the problem of communication.

[0133] In theory, a satellite can orbit the earth, so every corner of the earth can be covered by satellite communication. And the area covered by NTN communication equipment is much larger than that covered by ground communication equipment. For example, in satellite communication, a satellite can cover a large area on the ground.

[0134] Second, NTN communication has great social value. NTN communication can achieve coverage at a low cost, for example, satellite communication can cover remote mountainous areas or poor countries or regions at a low cost. This can enable people in these areas to enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed areas and promoting the development of these areas.

[0135] Third, NTN communication has industry application value. NTN communication has a long communication distance and does not significantly increase the cost of communication. For time-sensitive services that require long-distance transmission, satellite communication can be used to reduce the transmission delay of the service.

[0136] In addition, NTN communication has high stability and can be used for emergency communication. For example, NTN communication is not limited by natural conditions and can quickly establish a communication connection in extreme conditions where the infrastructure of cellular communication is not available, such as in the event of a disaster (e.g., an earthquake).

[0137] According to the height of the orbit, the communication satellite can be divided into low-earth orbit (LEO) satellite, medium-earth orbit (MEO) satellite, geostationary earth orbit (GEO) satellite, high elliptical orbit (HEO) satellite, etc.

[0138] In order to ensure the coverage of the satellite and improve the system capacity of the entire satellite communication system, the satellite can adopt multi-beam coverage of the ground, that is, a plurality of beam footprints can constitute the field of view of the satellite. For example, a satellite can form dozens or even hundreds of beams to cover the ground. Among them, a satellite beam can cover a ground area with a diameter of dozens to hundreds of kilometers.

[0139] In the traditional communication satellite system, usually one satellite provides services for the ground through multiple beams. FIG. 4 shows an NTN communication system. The NTN communication system shown in FIG. 4 includes a satellite 410 and a satellite 420. The satellite 410 can provide services for terminal devices in a region 430 through multiple beams, and the satellite 420 provides services for terminal devices in a region 440 through multiple beams.

[0140] The bandwidth and power of the satellite are shared among multiple beams, and the coverage areas of different beams generally have some overlap. In order to support wide-area coverage, a single satellite usually needs to be equipped with several hundred or even thousands of beams. Due to the constraints of satellite transmission power or backhaul link bandwidth, usually only a small number of beams can be activated at the same time.

[0141] The services of NTN users present extremely uneven distribution characteristics at different times and in different regions. For example, in sparsely populated regions such as oceans and deserts, the number of users is small, and the service demand of users is low. For densely populated regions such as cities, the number of users is large, and the service demand of users is high. For example, for the same region, the service demand of users is high during the day, and the service demand of users is low at night.

[0142] If the same network service is provided for different regions and different times, a large part of the service capacity of the satellite will be wasted on the ocean and uninhabited land, or the region with a large number of users will not be able to provide corresponding services to meet the needs of users.

[0143] In order to better match the scenario, the beam hopping technology is introduced. The beam hopping technology can fully exert the communication capability of the satellite on the premise of meeting the service demand.

[0144] After adopting the hopping beam technology, the activity time of the beam in different areas can be different, so as to meet the service requirements of different areas. For example, for densely populated areas, the on-time of the satellite can be extended, and for sparsely populated areas, the on-time of the satellite can be reduced.

[0145] The hopping beam technology can utilize all available satellite resources to provide services for specific locations or users. By adjusting the on-time and period of the beam, different capacity values are provided to balance the requirements of different beam coverage areas.

[0146] From the above, the SSB is an important basis for the terminal device to complete cell selection, time-frequency synchronization, RRM measurement, etc. How to better match the characteristics of the unbalanced distribution of user services in the time and spatial dimensions in the NTN hopping beam scenario, fully utilize the capacity of the satellite, and improve the system efficiency is a problem that needs to be solved at present.

[0147] Currently, the transmission period of the SSB is fixed, that is, the transmission period of the SSB is the same at different times and in different areas. However, for the NTN communication scenario, the distribution of user services is unbalanced at different times and in different areas. For example, the service demand of terminal devices in some areas (such as densely populated areas) is relatively high, while the service demand of terminal devices in some areas (such as sparsely populated areas) is relatively low. For example, for the same area, the service demand of terminal devices is relatively high in some time periods (such as daytime), while the service demand of terminal devices is relatively low in other time periods (such as nighttime). If the SSB is transmitted according to the same period, the following problems can occur: for areas with relatively low service demand, it can cause waste of communication resources, and for areas with relatively high service demand, it can cause insufficient resources, thereby causing unreasonable network resource allocation.

[0148] The above is an introduction taking the NTN communication scenario as an example. The embodiments of the present application are not limited to this scenario. For any communication scenario with unbalanced distribution of user services, the embodiments of the present application can be used.

[0149] To solve the above problems, the embodiments of the present application provide a wireless communication method and device. A variable period SSB is set, that is, the transmission period of the SSB is a period composed of one or more period combinations, so that the transmission period of the SSB can be flexibly adjusted according to the distribution of user services. For example, when the user service demand is high, the transmission period of the SSB can be reduced, and when the user service demand is low, the transmission period of the SSB can be increased, so as to meet the user service demand and fully utilize the communication capacity of the network.

[0150] The wireless communication method provided by the embodiment of the present application is described in detail below in combination with FIG. 5. The method shown in FIG. 5 is described from the perspective of device interaction. The specific forms and quantities of the devices shown are only examples and should not constitute any limitation on the implementation of the method provided by the present application. The communication method of the embodiment of the present application is described in detail below taking the network device and the terminal device as the execution subject.

[0151] It should be understood that the terminal device in the embodiment of the present application can be the terminal device itself, or a chip, chip system or processor supporting the terminal device to implement the communication method, or a logic module or software capable of implementing all or part of the terminal device. The network device in the embodiment of the present application can be the network device itself, or a chip, chip system or processor supporting the network device to implement the communication method, or a logic module or software capable of implementing all or part of the network device.

[0152] The communication system in the embodiment of the present application can be any kind of user service unbalanced communication system. The terminal device in the embodiment of the present application can be a terminal device in the communication system, and the network device can be a network device in the communication system. Taking the communication system as an NTN communication system for example, the terminal device in the embodiment of the present application can be a terminal device in the NTN communication system, and the network device can be a network device in the NTN communication system.

[0153] Referring to FIG. 5, in step S510, the terminal device acquires first configuration information.

[0154] The first configuration information can include one or more periodic SSB configurations. In some implementation manners, the first configuration information can include one periodic SSB configuration. In some implementation manners, the first configuration information can include multiple periodic SSB configurations.

[0155] The SSB configuration in the embodiment of the present application can include one or more of the following: a transmission period of the SSB, a duration of each period, an offset of the starting position of each period, a transmission frequency of the SSB, and the like. These information will be described in detail below.

[0156] The types of the periods in the embodiment of the present application can be classified based on the length of the period. If the period lengths of two periods are different, the two periods are of two types. If the period lengths of two periods are the same, the two periods are of the same type.

[0157] In some embodiments, the first configuration information can be related to a region where the terminal device is located. In this case, a plurality of first configuration information can be configured respectively for a plurality of regions. The first configuration information corresponding to different regions can be the same or different. As known from the above, the user service demand of different regions is quite different. By setting the first configuration information related to the region, the first configuration information can be matched with the user service demand of the corresponding region, and the user service demand of the region can be met.

[0158] In some implementations, taking the first region as an example, if the user service demand in the first region is relatively stable, for the first region, one kind of periodic SSB configuration can be configured; if the user service demand in the first region changes greatly, for the first region, multiple kinds of periodic SSB configurations can be configured. If the user service demands of the first region and the second region are consistent, the same SSB configuration can be configured for the first region and the second region.

[0159] In some implementations, for the same region, the user service demand will also appear unbalanced in time, therefore, for the same region, if the user service demand is relatively large at a certain moment or a certain period of time, the transmission period of the SSB can be set to be smaller; if the user service demand is relatively small at a certain moment or a certain period of time, the transmission period of the SSB can be set to be larger.

[0160] The division method of the region in the embodiments of the present application is not specifically limited. As an example, the region can be divided according to the user service demand. For example, the regions with the same user service demand can be divided into the same region, and the regions with different user service demands can be divided into different regions. In other words, as another example, the region can be divided according to the geographical position. For example, the region can be divided according to the latitude and longitude information.

[0161] In some embodiments, the first configuration information is related to a beam. In this case, the first configuration information can be configured respectively for a plurality of beams. The first configuration information corresponding to different beams can be the same or different. There is a certain corresponding relationship between the beam and the region, that is, the user service demand corresponding to different beams can also be different. By setting the first configuration information related to the beam, the first configuration information can be matched with the user service demand of the corresponding beam, and the user service demand corresponding to the beam can be met.

[0162] In some implementations, if the user service demand corresponding to a certain beam is relatively stable, only one kind of periodic SSB configuration needs to be set on the beam; if the user service demand corresponding to a certain beam changes greatly, multiple kinds of periodic SSB configurations can be set on the beam.

[0163] The method for the terminal device to obtain the first configuration information is not limited in the embodiments of the present application. As an example, the first configuration information is predefined in a protocol, and the terminal device can obtain the first configuration information from the protocol. As another example, the first configuration information can be configured by a network device, and the network device can send the first configuration information to the terminal device. Referring to FIG. 5, in step S505, the network device can send the first configuration information to the terminal device.

[0164] Still referring to FIG. 5, in step S520, the terminal device receives the SSB sent by the network device based on the SSB configuration of one or more periods. Correspondingly, the network device can send the SSB to the terminal device based on the SSB configuration of one or more periods. The network device can send the SSB in a broadcast manner. For example, the SSB can be carried in a system message.

[0165] In some implementations, the transmission period of the SSB is a period formed by one or more period combinations. If the first configuration information includes the SSB configuration of one period, the transmission period of the SSB is the period. If the first configuration information includes the SSB configuration of multiple periods, the transmission period of the SSB is a period formed by the multiple periods.

[0166] It should be noted that if the first configuration information includes the SSB configuration of multiple periods, the time unit in which the SSB is located is the union of the time units in which the SSBs are located, which is determined according to the SSB configuration of the multiple periods.

[0167] The combination of the multiple periods includes concatenation and / or superposition, which will be described in detail below.

[0168] In some implementations, the terminal device can determine the reception time and / or reception frequency point of the SSB based on the SSB configuration of one or more periods, and receive the SSB sent by the network device at the corresponding reception time and / or reception frequency point. In some implementations, the network device can determine the transmission time and / or transmission frequency point of the SSB according to the SSB configuration of one or more periods, and send the SSB to the terminal device at the corresponding transmission time and / or transmission frequency point.

[0169] The technical scheme provided by the embodiments of the present application can make the transmission period of the SSB variable, so that the transmission period of the SSB can be flexibly adjusted according to actual needs, thereby meeting the situation that the terminal service distribution is unbalanced in the NTN communication scenario.

[0170] Taking an example of the first configuration information being related to a region where the terminal device is located, the embodiment of the present application can configure SSB configuration matched with the region according to the service demand situation of the region where the terminal device is located, so as to not only meet the service demand of the terminal device in the region, but also not cause waste of network resources.

[0171] Taking an example of the first configuration information being related to a beam, the embodiment of the present application can configure SSB configuration matched with the beam according to the terminal service demand situation corresponding to the beam, so as to not only meet the service demand of the terminal device, but also not cause waste of network resources.

[0172] In some embodiments, the first configuration information can further include first indication information, the first indication information can be used to indicate the transmission mode of the SSB, so as to make the terminal device clear the transmission mode of the SSB and receive the SSB according to the corresponding mode. In addition, by indicating the transmission mode of the SSB through the first indication information, the complexity of the terminal device determining the transmission mode of the SSB can be reduced. In some implementation manners, the terminal device can receive the SSB according to the transmission mode indicated by the first indication information, and correspondingly, the network device can transmit the SSB according to the transmission mode indicated by the first indication information.

[0173] In some embodiments, the transmission mode of the SSB can include one or more of the following: a first mode, a second mode and a third mode. For example, the transmission mode of the SSB can be the first mode. For another example, the transmission mode of the SSB is the second mode. For another example, the transmission mode of the SSB is the third mode. For another example, the transmission mode of the SSB is a mode composed of the first mode and the third mode. For another example, the transmission mode of the SSB is a mode composed of the second mode and the third mode. For another example, the transmission mode of the SSB is a mode composed of the first mode, the second mode and the third mode. The above combination modes can include series and / or superposition. By setting multiple transmission modes, the flexibility of SSB transmission can be improved, and the matching of the communication scene of the unbalanced distribution of SSB and user service can be further improved.

[0174] The above transmission modes are described in detail as follows.

[0175] In some implementations, the first mode can be a mode of transmitting in one or more periods in series. The series mode can be understood as a mode of executing one or more periods alternately. In other words, the first mode can refer to executing an SSB configuration of one period first, and then executing an SSB configuration of the next period after the execution of the SSB configuration of the one period is completed. The period formed after the series of one or more periods can be referred to as a second period. The second period can also be referred to as a super period or a large period. The one or more periods can be referred to as small periods. Taking FIG. 6 as an example, T1 and T2 can be understood as small periods, and the second period formed after the series of T1 and T2 is a super period or a large period. In one second period, the network device can transmit multiple SSBs, and the terminal device can receive multiple SSBs.

[0176] Suppose that the one or more periods include T1, T2, and T3, and T1, T2, and T3 are three periods of different lengths, the first mode can be a mode of executing T1, T2, and T3 alternately. The present application does not specifically limit the order of the alternation of T1, T2, and T3. For example, the first mode can be transmitted in the manner of executing T1 first, executing T2 second, and executing T3 third, that is, the first mode can be T1→T2→T3→T1→…, and so on. For another example, the first mode can be transmitted in the manner of executing T1 first, executing T3 second, and executing T2 third, that is, the first mode can be T1→T3→T2→T1→…, and so on. For another example, the first mode can be transmitted in the manner of executing T2 first, executing T3 second, and executing T1 third, that is, the first mode can be T2→T3→T1→T2→…, and so on. For another example, the first mode can be transmitted in the manner of executing T2 first, executing T1 second, and executing T3 third, that is, the first mode can be T2→T1→T3→T2→…, and so on. For another example, the first mode can be transmitted in the manner of executing T3 first, executing T1 second, and executing T2 third, that is, the first mode can be T3→T1→T2→T3→…, and so on. For another example, the first mode can be transmitted in the manner of executing T3 first, executing T2 second, and executing T1 third, that is, the first mode can be T3→T2→T1→T3→…, and so on.

[0177] The first mode is illustrated below in conjunction with FIG. 6. FIG. 6 shows two periods, which are denoted as T1 and T2. The period length of T1 is 4 time units, the number of periods of T1 is 2, the period length of T2 is 8 time units, and the number of periods of T2 is 2.

[0178] The time unit in the embodiments of the present application can be any time unit, as long as the granularity of the time unit is smaller than the granularity of a system frame. For example, the time unit can be a half frame. One system frame can include two half frames, which are an upper half frame and a lower half frame. In addition to a half frame, the time unit in the embodiments of the present application can also be other types of time units, such as ms, and the like. The meaning of the time unit is similar below.

[0179] In the scheme shown in FIG. 6, the terminal device first receives SSBs with a period of T1, after receiving 2 SSBs, switches to receiving SSBs with a period of T2, after receiving 2 SSBs with a period of T2, switches to receiving SSBs with a period of T1 again, and so on. Correspondingly, the network device can first transmit SSBs with a period of T1, after transmitting 2 SSBs, switches to transmitting SSBs with a period of T2, after transmitting 2 SSBs with a period of T2, switches to transmitting SSBs with a period of T1 again, and so on.

[0180] In some implementations, the second mode can be transmitted in a manner of superimposing one or more periods on each other. In other words, the one or more periods are each independently executed, or the one or more periods are synchronously executed. Alternatively, there is no execution sequence for the SSB configuration of the one or more periods, and each period can be independently executed.

[0181] The second mode is exemplified below in conjunction with FIG. 7. FIG. 7 shows two periods, which are denoted as T1 and T2. The period length of T1 is 4 time units, and the period length of T2 is 8 time units. After the two periods are superimposed on each other, the transmission mode shown in FIG. 7 is formed.

[0182] In the (a) diagram shown in FIG. 7, after the two periods are superimposed, the transmission positions of SSBs do not overlap. In the (b) diagram shown in FIG. 7, after the two periods are superimposed, the transmission positions of SSBs overlap. At the overlapping positions, the terminal device only needs to receive SSBs once, and correspondingly, the network device also only needs to transmit SSBs once.

[0183] In some implementations, the third mode can be a combination of the first mode and the second mode, that is, the third mode can be a mode formed by combining the first mode and the second mode. The embodiments of the present application do not make specific limitations on the combination manner of the first mode and the second mode, and the third mode formed by the combination manner of the first mode and the second mode is different. The combination manner can include superimposition and / or series connection.

[0184] As an example, the third mode can be a mode formed by superimposing the first mode and the second mode on each other. The third mode is exemplified below in conjunction with FIG. 8, and FIG. 8 shows two cases of the third mode.

[0185] The (a) of FIG. 8 illustrates a case of a third mode. In the (a) of FIG. 8, the transmission position of the SSB of the third mode is the same as the transmission position of the SSB of the second mode, that is, the transmission frequency of the SSB in the third mode is the same as the transmission frequency of the SSB in the second mode.

[0186] The (b) of FIG. 8 illustrates a case of another third mode. In the (b) of FIG. 8, the transmission frequency of the SSB in the third mode is higher than both the transmission frequency of the SSB in the second mode and the transmission frequency of the SSB in the first mode. Therefore, by superimposing the transmission modes, the transmission frequency of the SSB can be improved.

[0187] In some implementations, the transmission mode of the SSB can be a mode combined by two or three of the first mode, the second mode, and the third mode. Hereinafter, the mode combined by the first mode, the second mode, and the third mode is referred to as a fourth mode, the mode combined by the first mode and the third mode is referred to as a fifth mode, and the mode combined by the second mode and the third mode is referred to as a sixth mode.

[0188] The fourth mode will be exemplified below in conjunction with FIG. 9 and FIG. 10.

[0189] The fourth mode shown in FIG. 9 can be understood as a series connection of the first mode→the second mode→the third mode, or a series connection of the second mode→the third mode→the first mode, or a series connection of the third mode→the first mode→the second mode.

[0190] Referring to FIG. 9, the terminal device can first receive the SSB in the first mode, then receive the SSB in the second mode, and then receive the SSB in the third mode. Correspondingly, the network device can first transmit the SSB in the first mode, then transmit the SSB in the second mode, and then transmit the SSB in the third mode.

[0191] It should be noted that since the first mode, the second mode, and the third mode are executed alternately, the scheme shown in FIG. 9 can also be understood as that the terminal device first receives the SSB in the second mode, then receives the SSB in the third mode, and then receives the SSB in the first mode, or can also be understood as that the terminal device first receives the SSB in the third mode, then receives the SSB in the first mode, and then receives the SSB in the second mode. Similarly on the network side, for brevity, no longer be repeated.

[0192] In the (a) of FIG. 9, the first mode, the second mode, and the third mode have no offset at the mode switching position. In the (b) of FIG. 9, the first mode, the second mode, and the third mode have an offset at the mode switching position.

[0193] FIG. 10 shows another fourth mode. The fourth mode shown in FIG. 10 can be understood as a concatenation of the second mode→the first mode→the third mode, or a concatenation of the first mode→the third mode→the second mode, or a concatenation of the third mode→the second mode→the first mode.

[0194] Referring to FIG. 10, the terminal device can first receive SSBs in the second mode, then receive SSBs in the first mode, and then receive SSBs in the third mode. Correspondingly, the network device can first transmit SSBs in the second mode, then transmit SSBs in the first mode, and then transmit SSBs in the third mode.

[0195] It should be noted that since the first mode, the second mode, and the third mode are executed alternately, the scheme shown in FIG. 10 can also be understood as that the terminal device first receives SSBs in the first mode, then receives SSBs in the third mode, and then receives SSBs in the second mode, or can also be understood as that the terminal device first receives SSBs in the third mode, then receives SSBs in the second mode, and then receives SSBs in the first mode. Similarly on the network side, for brevity, details are not repeated.

[0196] In (a) of FIG. 10, the first mode, the second mode, and the third mode do not have offsets at the positions of mode switching. In (b) of FIG. 10, the first mode, the second mode, and the third mode have offsets at the positions of mode switching.

[0197] It should be noted that the above shows both cases of having offsets and not having offsets at the positions of mode switching, and embodiments of the present application are not limited thereto. For example, for multiple modes, a part of the modes have offsets at the positions of switching, and a part of the modes do not have offsets at the positions of switching. For example, taking the fourth mode shown in FIG. 9 as an example, the first mode and the second mode have offsets at the positions of mode switching, and the second mode and the third mode do not have offsets at the positions of mode switching.

[0198] The fifth mode is illustrated below in conjunction with FIG. 11. The fifth mode can be understood as a concatenation of the first mode→the third mode, or a concatenation of the third mode→the first mode.

[0199] Referring to FIG. 11, the terminal device can first receive SSBs in the first mode, then receive SSBs in the third mode. Correspondingly, the network device can first transmit SSBs in the first mode, then transmit SSBs in the third mode.

[0200] It should be noted that since the first mode and the third mode are executed alternately, the scheme shown in FIG. 11 can also be understood as that the terminal device first receives SSBs in the third mode, then receives SSBs in the first mode. Similarly on the network side, for brevity, details are not repeated.

[0201] In the (a) diagram of FIG. 11, the first mode and the third mode are not offset at the position of mode switching. In the (b) diagram of FIG. 11, the first mode and the third mode are offset at the position of mode switching.

[0202] The sixth mode is exemplified below in combination with FIG. 12. The sixth mode can be understood as a concatenation of the second mode and the third mode, or a concatenation of the third mode and the second mode.

[0203] Referring to FIG. 12, the terminal device can first receive SSBs in the second mode and then receive SSBs in the third mode. Correspondingly, the network device can first transmit SSBs in the second mode and then transmit SSBs in the third mode.

[0204] It should be noted that, since the second mode and the third mode are executed alternately, the scheme shown in FIG. 12 can also be understood as that the terminal device first receives SSBs in the third mode and then receives SSBs in the second mode. Similarly on the network side, for brevity, details are not described herein.

[0205] In the (a) diagram of FIG. 12, the second mode and the third mode are not offset at the position of mode switching. In the (b) diagram of FIG. 12, the second mode and the third mode are offset at the position of mode switching.

[0206] FIGS. 9-12 describe the combination between multiple modes in a concatenation manner, but embodiments of the present application are not limited thereto, and the multiple modes can also be combined in a superposition manner or a superposition+concatenation manner.

[0207] As can be seen from the schemes shown in FIGS. 9-12, when the network device transmits SSBs in the first mode, the transmission frequency of SSBs is the lowest, and when the network device transmits SSBs in the third mode, the transmission frequency of SSBs is the highest.

[0208] The scheme of embodiments of the present application can generate a new mode by combining different modes, so that the adjustment of the transmission frequency of SSBs can be realized without adjusting the basic mode (such as the first mode, the second mode, etc.), thereby simplifying the operation of adjusting the transmission frequency of SSBs.

[0209] It should be noted that the transmission frequency in embodiments of the present application can also be replaced by transmission density.

[0210] In some embodiments, the configuration parameters contained in the first configuration information can be different for different transmission modes. The configuration parameters contained in the first configuration information are described in detail below taking the first mode and the second mode as examples.

[0211] In some implementations, taking the transmission mode of the SSBs as an example, assuming that the one or more periods include a first period, the first configuration information can include one or more of the following parameters: a first parameter, a second parameter, a first offset, and a second offset. The first period can be any one of the one or more periods. In some implementations, each of the one or more periods can be configured with the above-mentioned parameters. The above-mentioned parameters are described in detail below.

[0212] The first parameter can be used to indicate the period length of the first period. The first parameter can be T, for example. Taking FIG. 6 as an example, the period length of T1 is 4 time units, and the period length of T2 is 8 time units.

[0213] The second parameter can be used to indicate the duration of the first period within the second period. The duration of the first period can also be understood as the duration for which the SSB configuration of the first period is continuously performed. Taking FIG. 6 as an example, the duration of T1 is 8 time units, and the duration of T2 is 16 time units.

[0214] The embodiments of the present application do not limit the specific content of the second parameter. For example, the second parameter can be the number of periods. Taking FIG. 6 as an example, the number of periods of T1 is 2, and the number of periods of T2 is 2. By indicating the duration of the first period through the number of periods, the overhead of the indication signaling can be reduced. For another example, the second parameter can be the duration. By directly indicating the duration, the calculation overhead of the terminal device can be reduced. The terminal device can receive the SSBs transmitted by the network device within the duration, and correspondingly, the network device can transmit the SSBs to the terminal device within the duration. For another example, the second parameter can also be a timer, which is used to control the validity duration of the SSB configuration of the first period. The duration of the timer is the duration of the first period. The timer is described in detail below.

[0215] The first offset can be used to indicate the offset of the starting position of the first period, or in other words, the first offset can be used to determine the starting position of the first period. As described above, the first mode is a mode formed by concatenating the one or more periods, and therefore, there is a connection between two different periods. The connection between the two different periods can be a connection without interval or a connection with interval. The connection with interval means that there is an offset of the starting position, and the offset is the first offset.

[0216] Taking FIG. 6 as an example, in the scheme shown in the (a) diagram of FIG. 6, the end position of T1 is end position a, the end position a is also the start position of T2, the end position of T2 is end position b, and the end position b is also the start position of the next T1. Therefore, there is no offset between T1 and T2 at the connection, or in other words, T1 has no start position offset, and T2 has no start position offset.

[0217] In the schemes shown in the (b) diagram and the (c) diagram of FIG. 6, the end position of T1 is end position a, the start position of T2 is start position e, and the end position a and the start position e are separated by 1 time unit. Therefore, there is an offset of 1 time unit (i.e., offset a) between T2 and T1, or in other words, T2 has a start position offset of 1 time unit. The end position of T2 is end position b, and the start position of the next T1 is start position f. The start position f and the end position b are separated by 1 time unit. Therefore, there is also an offset of 1 time unit (i.e., offset b) between T1 and T2, or in other words, T1 has a start position offset of 1 time unit.

[0218] It should be noted that the first offsets corresponding to different types of periods can be the same or different, or in other words, the offset a and the offset b shown in FIG. 6 can be equal or not equal, which is not limited in the embodiments of the present application.

[0219] The second offset can be used to indicate the offset of the start position of the second type of period, or in other words, the second offset can be used to determine the start position of the second type of period. Two second type of periods at the connection can be connected without interval, or can be connected with interval. The connection with interval means that there is a start position offset.

[0220] The following is described in combination with FIG. 6. In the schemes shown in the (a) diagram and the (b) diagram of FIG. 6, the end position b is the end position of the second type of period and is also the start position of the next second type of period. Therefore, the (a) diagram and the (b) diagram of FIG. 6 show that there is no second offset for the second type of period.

[0221] In the scheme shown in the (c) diagram of FIG. 6, the end position b is the end position of the second type of period, the start position g is the start position of the next second type of period, and the end position b and the start position g are separated by 2 time units. Therefore, the second type of period has a start position offset of 2 time units.

[0222] In some implementations, the period length of the second type of period can be determined based on the period length of one or more periods (small periods) in the second type of period and the first offset corresponding to the one or more periods. The calculation formula of the period length of the second type of period can be as follows:

[0223] wherein T dura is the length of the second periodicity, is the duration of the i-th periodicity of the one or more periodicities, is the offset of the i-th periodicity of the one or more periodicities, mod denotes a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0224] If there is no corresponding first offset for the one or more periodicities, the length of the second periodicity is the sum of the lengths of the one or more periodicities. In this case, the length of the second periodicity is calculated according to the following formula:

[0225] wherein T dura is the length of the second periodicity, is the duration of the i-th periodicity of the one or more periodicities, mod denotes a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0226] In some implementations, the starting position of the second periodicity can be determined based on one or more of the following parameters: the length of the second periodicity and the second offset. If the second periodicity has a corresponding second offset, the starting position of the second periodicity is determined based on the length of the second periodicity and the second offset. If the second periodicity has no corresponding second offset, the starting position of the second periodicity can be determined based on the length of the second periodicity.

[0227] If the second periodicity has a corresponding second offset, the starting position of the second periodicity can be calculated according to the following formula: f · L + n hf - T offset ) mod T dura = 0 (Formula 3)

[0228] wherein n f is the system frame number in which the starting position of the second periodicity is located, L is the number of time units contained in a single system frame, n hf is the time unit sequence number of the starting position of the second periodicity within the system frame, T offset is the second offset, and T dura is the length of the second periodicity.

[0229] Combining Formula (3) with Formula (1), the following formula can be obtained:

[0230] wherein n f is the system frame number in which the starting position of the second periodicity is located, L is the number of time units contained in a single system frame, nhf n is a time unit sequence number of the starting position of the second type of period in a system frame, T offset M is a total number of one or more types of periods, is a duration of the i-th type of period in the one or more types of periods, is an offset of the i-th type of period in the one or more types of periods, mod represents a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0231] Combining formula (3) and formula (2), the following formula can be obtained:

[0232] wherein n f n is a system frame number in which the starting position of the second type of period is located, L is a number of time units contained in a single system frame, n hf n is a time unit sequence number of the starting position of the second type of period in a system frame, T offset M is a total number of one or more types of periods, is a duration of the i-th type of period in the one or more types of periods, mod represents a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0233] In some embodiments, when i = 0, the starting position of the i-th type of period is the starting position of the second type of period. That is, the starting position of the 0-th type of period is the same as the starting position of the second type of period. Taking FIG. 6 as an example, the 0-th type of period is T1, and the starting position of T1 is the starting position of the second type of period.

[0234] In some embodiments, when i ≥ 1, is an offset value of the starting position of the i-th type of period relative to the ending position of the (i-1)-th type of period. Referring to FIG. 6, taking the 0-th type of period as T1 and the 1-st type of period as T2 as an example, is an offset value of the starting position of T1 relative to the ending position of T0, and is 1.

[0235] In some implementations, taking the case where the transmission mode of the SSB includes the second mode as an example, assuming that the one or more types of periods include a third type of period, the first configuration information can include one or more of the following parameters: a third parameter and a third offset. The third type of period is any one of the one or more types of periods. In some implementations, each of the one or more types of periods can be configured with the above-mentioned parameters. The above-mentioned parameters are described in detail below.

[0236] The third parameter can be used to indicate the period length of the third type of period. For example, the third parameter can be T. Taking Figure 7 as an example, the period length of T1 is 4, and the period length of T2 is 8.

[0237] The third offset can be used to indicate the offset of the starting position of the third type of cycle, or in other words, the third offset can be used to determine the starting position of the third type of cycle. As shown earlier, in the second mode, one or more cycles are independent of each other, and the starting positions of different types of cycles can be the same or different. The starting position of each cycle can be determined based on its corresponding third offset. Taking Figure 7 as an example, in Figure 7(a), the third offset corresponding to T1 is 0, and the third offset corresponding to T2 is 2 time units. In Figure 7(b), the third offsets corresponding to T1 and T2 are both 0.

[0238] The starting position of the third cycle can be determined based on the cycle length and / or the third offset of the third cycle. If the third cycle has a corresponding third offset, the starting position of the third cycle is determined based on the cycle length and the third offset of the third cycle. If the third cycle does not have a corresponding third offset, the starting position of the third cycle can be determined based on the cycle length of the third cycle.

[0239] If the third type of period has a corresponding third offset, then the formula for calculating the starting position of the third type of period can be as follows:

[0240] Where, n fj Let n be the system frame number where the j-th cycle begins, L be the number of time units contained in a single system frame, and n be the system frame number. hfj Let j be the time unit number within the system frame where the starting position of the j-th cycle is located. T is the offset of the starting position of the j-th cycle. j Let be the period length of the j-th type of period, where mod represents the modulo operation, and j is 0 or a positive integer.

[0241] If there is no corresponding third offset for the third type of period, the formula for calculating the starting position of the third type of period can be as follows: (n fj ·L+n hfj )modT j =0 (Formula 7)

[0242] Where, n fj Let n be the system frame number where the j-th cycle begins, L be the number of time units contained in a single system frame, and n be the system frame number. hfj T is the time unit index within the system frame where the starting position of the j-th period is located. jis the cycle length of the jth cycle, mod denotes a modulo operation, j is 0 or a positive integer.

[0243] It should be noted that the jth cycle described above belongs to the third cycle.

[0244] For the second mode, after the plurality of cycles are superimposed, the transmission positions of the SSBs can or can not overlap, and embodiments of the present application do not make specific limitations thereon. Taking Fig. 7(a) as an example, after T1 and T2 are superimposed, the transmission positions of the SSBs do not overlap. Taking Fig. 7(b) as an example, after T1 and T2 are superimposed, the transmission positions of the SSBs overlap. The network device can transmit the SSB only once at the overlapping position; correspondingly, the terminal device can also receive the SSB only once at the overlapping position.

[0245] In some embodiments, the first configuration information can further include a timer, and the timer can be used to control the validity duration of the SSB configuration of one or more cycles. When the timer is started, the SSB configuration corresponding to the timer takes effect, and when the timer expires, the SSB configuration corresponding to the timer is invalid.

[0246] When the SSB configuration takes effect, the network device can transmit the SSB based on the effective SSB configuration, and the terminal device can receive the SSB based on the effective SSB configuration. When the SSB configuration is invalid, the network device will not transmit the SSB based on the SSB configuration, and the terminal device will also not receive the SSB based on the SSB configuration. Embodiments of the present application control the SSB configuration used by the terminal device and the network device through the effective SSB configuration, which is conducive to improving the flexibility of the terminal device and the network device using the SSB configuration.

[0247] It should be noted that the network device transmitting the SSB can mean that the network device transmits the SSB in the corresponding area at a specified time unit.

[0248] Embodiments of the present application can flexibly control the taking effect and invalidation of the SSB configuration by adjusting the start state of the timer and / or the duration of the timer, which means that embodiments of the present application can change the start state and / or duration of the timer according to actual needs to adjust the transmission time and frequency of the SSB, so that the transmission cycle of the SSB is more matched with the actual needs of the terminal device, and can meet the scenario of unbalanced and dynamically changing user service demand distribution.

[0249] The configuration manner of the timer is not limited in the embodiments of this application. As an example, one corresponding timer can be set for each period to control the invalidation and effectiveness of the SSB configuration of the period. As another example, one corresponding timer can be set for at least two periods, and the timer can be used to control the effectiveness and invalidation of the SSB configuration of the at least two periods. The at least two periods herein can be part of the multiple periods above, or can be all of the multiple periods above, which is not limited in the embodiments of this application. The SSB configuration corresponding to one timer is also referred to as a set of SSB configurations below.

[0250] In some embodiments, the SSB configuration of one or more periods above can include one or more sets of SSB configurations. If the first configuration information includes the SSB configuration of one period, the SSB configuration of the one period is one set of SSB configurations. If the first configuration information includes the SSB configuration of multiple periods, the SSB configuration of the multiple periods can include one set of SSB configurations or multiple sets of SSB configurations.

[0251] If the SSB configuration of multiple periods includes one set of SSB configurations, it can mean that one set of SSB configurations includes all the SSB configurations in the first configuration information. If the SSB configuration of multiple periods includes multiple sets of SSB configurations, the number of the SSB configuration of multiple periods can be the same as or different from the number of the multiple sets of SSB configurations. If the number of the SSB configuration of multiple periods is the same as the number of the multiple sets of SSB configurations, it means that one set of SSB configurations includes the SSB configuration of one period. If the number of the SSB configuration of multiple periods is different from the number of the multiple sets of SSB configurations, such as the number of the SSB configuration of multiple periods is greater than the number of the multiple sets of SSB configurations, at least one set of SSB configurations in the multiple sets of SSB configurations includes the SSB configuration of at least two periods.

[0252] It should be noted that the number of SSB configurations included in different sets of SSB configurations can be the same or different, which is not limited in the embodiments of this application.

[0253] In some embodiments, one or more timers can be included in the first configuration information, wherein the one or more timers are respectively used to control the effectiveness duration of one or more sets of SSB configurations. The effectiveness duration of the SSB configuration is the duration of the timer corresponding to the SSB configuration.

[0254] The one or more timers correspond to one or more sets of SSB configurations respectively. If one timer and one set of SSB configurations are included in the first configuration information, the timer corresponds to the set of SSB configurations. If multiple timers and multiple sets of SSB configurations are included in the first configuration information, the multiple timers correspond to the multiple sets of SSB configurations respectively, and one timer is used to control the effectiveness duration of one set of SSB configurations.

[0255] The embodiment of the present application controls the validity and invalidity of a set of SSB configurations through a timer, so that the duration and / or starting state of the timer can be flexibly adjusted according to actual needs to change the transmission time and frequency of SSBs, so that the transmission period of SSBs is more matched with the actual needs of terminal devices, and can meet the scenario of unbalanced and dynamically changing user service demand distribution.

[0256] In some embodiments, the number of SSB configurations included in a set of SSB configurations can be different for different modes. As an example, if the transmission mode of SSBs is the first mode, a set of SSB configurations can include one periodic SSB configuration. As another example, if the transmission mode of SSBs includes the second mode, a set of SSB configurations can include one periodic SSB configuration, or at least two periodic SSB configurations. For different transmission modes, the embodiment of the present application clearly specifies the number of SSB configurations included in a set of SSB configurations for each transmission mode, so that the set of SSB configurations matches the transmission mode of SSBs.

[0257] The starting state of the timer will be described in detail below for different transmission modes.

[0258] If the transmission mode of SSBs is the first mode, only one timer in one or more timers is in a starting state at the same time.

[0259] If the transmission mode of SSBs is the second mode, one or more timers in one or more timers are in a starting state at the same time. For example, if a set of SSB configurations includes one periodic SSB configuration, at least two timers are in a starting state at the same time. For another example, if a set of SSB configurations includes multiple periodic SSB configurations, only one timer can be in a starting state at the same time, or at least two timers can be in a starting state at the same time.

[0260] If the transmission mode of SSBs is the third mode, at least two timers in one or more timers are in a starting state at the same time. The at least two timers can include a first timer and a second timer, the first timer corresponds to the first mode, and the second timer corresponds to the second mode, in other words, the first timer is used to control the validity duration of the first mode, and the second timer is used to control the validity duration of the second mode.

[0261] For different modes, the embodiment of the present application clearly specifies the starting state of the timer or the number of timers started for each transmission mode, so that the starting of the timer matches the transmission mode of SSBs.

[0262] It should be noted that the execution duration of each mode shown in FIGS. 9-12 is only an example, and the execution duration of each mode can be flexibly adjusted according to actual needs, for example, the execution duration of each mode can be adjusted by adjusting the duration of the timer, and the embodiments of the present application do not make specific limitations thereto.

[0263] The technical solutions provided by the embodiments of the present application can flexibly switch various modes by controlling the start state of the timer and / or the number of started timers, thereby facilitating the reduction of the complexity of the mode switching operation.

[0264] It is assumed that only one timer is in the start state at the same time, and the multiple timers can be in the start state in turn, that is, when one timer expires, the next timer is started, and when the last timer expires, the first timer is started, and so on. The start process of the multiple timers is introduced below.

[0265] It is assumed that the number of one or more sets of SSB configurations is N, and the number of one or more timers is N, then one or more sets of SSB configurations and one or more timers can satisfy the following conditions: when the pth timer is started, the pth set of SSB configurations takes effect; when the pth timer expires, the pth set of SSB configurations is invalid, if p is less than N, the p+1th set of SSB configurations takes effect, and the p+1th timer is started, if p is equal to N, the Nth set of SSB configurations is invalid, the 1st set of SSB configurations takes effect, and the 1st timer is started; wherein N is a positive integer, and p is an integer greater than or equal to 1 and less than or equal to N.

[0266] The embodiments of the present application can realize the sequential execution of multiple sets of SSB configurations by controlling the sequential start of multiple timers, thereby reducing the complexity of the terminal device receiving SSB and reducing the complexity of the network device sending SSB.

[0267] In some embodiments, the transmission mode of the SSB can be transmitted in the manner of concatenation of the first mode, the second mode and the third mode, that is, the fourth mode described above.

[0268] The embodiments of the present application do not make specific limitations on the concatenation order of the first mode, the second mode and the third mode. For example, the concatenation order can be first mode→second mode→third mode, as shown in FIG. 9. For another example, the concatenation order can be second mode→first mode→third mode, as shown in FIG. 10.

[0269] The embodiments of the present application can configure corresponding timers for each mode respectively. For example, the plurality of timers can include a third timer, a fourth timer, and a fifth timer. The third timer can be used to control the effective duration of the first mode, the fourth timer can be used to control the effective duration of the second mode, and the fifth timer can be used to control the effective duration of the third mode.

[0270] The embodiments of the present application control the effective duration of the three modes through the three timers, so that the three modes can be flexibly combined to achieve flexible transmission of SSB.

[0271] Since the fourth mode is a series of the first mode, the second mode, and the third mode, only one timer among the third timer, the fourth timer, and the fifth timer is in a starting state at the same time to ensure the alternating execution of the three modes and achieve the series of the three modes.

[0272] Taking the series order of the first mode→the second mode→the third mode as an example, when the third timer starts, the first mode is effective, the network device can send SSB according to the first mode, and the terminal device can receive SSB according to the first mode. When the third timer expires, the first mode is invalid, the fourth timer starts, the second mode is effective, the network device can send SSB according to the second mode, and the terminal device can receive SSB according to the second mode. When the fourth timer expires, the second mode is invalid, the fifth timer starts, the third mode is effective, the network device can send SSB according to the third mode, and the terminal device can receive SSB according to the third mode. When the fifth timer expires, the third mode is invalid, the third timer starts, the first mode is effective, the network device sends SSB according to the first mode, and the terminal device receives SSB according to the first mode, and so on.

[0273] Taking the series order of the third mode→the second mode→the first mode as an example, when the fifth timer starts, the third mode is effective, the network device can send SSB according to the third mode, and the terminal device can receive SSB according to the third mode. When the fifth timer expires, the third mode is invalid, the fourth timer starts, the second mode is effective, the network device can send SSB according to the second mode, and the terminal device can receive SSB according to the second mode. When the fourth timer expires, the second mode is invalid, the third timer starts, the first mode is effective, the network device can send SSB according to the first mode, and the terminal device can receive SSB according to the first mode. When the third timer expires, the first mode is invalid, the fifth timer starts, the third mode is effective, the network device sends SSB according to the third mode, and the terminal device receives SSB according to the third mode, and so on.

[0274] In some embodiments, the terminal device can receive the SSB sent by the network device based on the effective SSB configuration. In some embodiments, the terminal device and / or the network device can determine the effective SSB configuration based on one or more of the following information: one or more periodic SSB configurations, one or more timers.

[0275] As an example, the terminal device and / or the network device can determine the effective SSB configuration according to one or more periodic SSB configurations. For example, if the first configuration information does not include information of one or more timers, the terminal device and / or the network device can determine the effective SSB configuration according to one or more periodic SSB configurations. For example, if the transmission mode of the SSB includes the first mode, the terminal device and / or the network device can determine the effective SSB configuration according to the second parameter.

[0276] As another example, the terminal device and / or the network device can determine the effective SSB configuration according to one or more timers. For example, if the first configuration information includes information of one or more timers, the terminal device and / or the network device can determine the effective SSB configuration according to one or more timers. The manner of determining the effective SSB configuration based on the timer can refer to the foregoing description, and for brevity, will not be repeated here.

[0277] As yet another example, the terminal device and / or the network device can determine the effective SSB configuration according to one or more periodic SSB configurations and one or more timers. If the effective SSB configuration determined based on the SSB configuration is different from the effective SSB configuration determined based on the timer, the actual effective SSB configuration can be the intersection of the effective SSB configurations determined based on the two manners.

[0278] In some embodiments, the terminal device can obtain a plurality of configuration information. The first configuration information can be one of the plurality of configuration information. The plurality of configuration information respectively corresponds to a plurality of regions, and / or the plurality of regions respectively corresponds to a plurality of beams.

[0279] The terminal device can determine the first configuration information from the plurality of configuration information based on the region where the terminal device is located and the association relationship between the plurality of configuration information and the plurality of beams and / or the plurality of regions. The first configuration information is the configuration information corresponding to the region where the terminal device is located.

[0280] The terminal device can determine the first configuration information corresponding to the region where the terminal device is located according to the association relationship between the plurality of configuration information and the plurality of beams and / or the plurality of regions, so that the determined first configuration information can match the region where the terminal device is located and meet the service requirement of the terminal device.

[0281] For convenience of description, the association relationship between the plurality of configuration information and the plurality of beams and / or the plurality of areas is referred to as a first association relationship.

[0282] For example, assuming that the first association relationship is shown in Table 1, area 1 corresponds to configuration information 1, area 2 corresponds to configuration information 2, and area 3 corresponds to configuration information 3. The terminal device can determine the first configuration information corresponding to the area where the terminal device is located according to the area where the terminal device is located. If the area where the terminal device is located is area 2, the terminal device can take configuration information 2 as the first configuration information. The terminal device can receive an SSB based on configuration information 2, and correspondingly, the network device can transmit an SSB in area 2 based on configuration information 2.

[0283] Table 1

[0284] After the terminal device receives the SSB, the terminal device can perform cell selection, time-frequency synchronization, RRM measurement and the like based on the SSB, which is not specifically limited in the embodiments of the present application.

[0285] It should be noted that the first mode included in the transmission mode in the embodiments of the present application can refer to that the transmission mode only includes the first mode (i.e., the transmission mode is the first mode), or can also refer to that the transmission mode includes not only the first mode, but also other modes (such as the second mode) and the like. The second mode included in the transmission mode in the embodiments of the present application can refer to that the transmission mode only includes the second mode (i.e., the transmission mode is the second mode), or can also refer to that the transmission mode includes not only the second mode, but also other modes (such as the first mode) and the like.

[0286] The method embodiments of the present application are described in detail above in combination with FIGS. 1-12, and the device embodiments of the present application are described below in combination with FIGS. 13-15. It should be understood that the description of the method embodiments and the description of the device embodiments correspond to each other, and therefore, the parts not described in detail can be referred to the method embodiments described above.

[0287] FIG. 13 is a schematic block diagram of a communication device according to an embodiment of the present application. As shown in FIG. 13, the communication device 1300 includes an obtaining module 1310 and a receiving module 1320.

[0288] In a possible implementation, the device 1300 can be used to implement the steps performed by the terminal device described above.

[0289] The obtaining module 1310 is configured to obtain first configuration information, wherein the first configuration information includes one or more periodic synchronization signal / physical broadcast channel block (SSB) configurations.

[0290] The receiving module 1320 is configured to receive, based on the one or more periodic SSB configurations, an SSB transmitted by the network device, wherein a transmission period of the SSB is a period formed by one or more period combinations.

[0291] In some possible implementation manners, the transmission mode of the SSB belongs to one or more of the following modes: a first mode; a second mode; a third mode, which is a mode formed by a combination of the first mode and the second mode; wherein the first mode is transmitted in a manner that the one or more periods are concatenated with each other, and the second mode is transmitted in a manner that the one or more periods are superimposed on each other.

[0292] In some possible implementation manners, the transmission mode of the SSB includes the first mode, the one or more periods include a first period, and the first configuration information further includes one or more of the following parameters: a first parameter, used to indicate a period length of the first period; a second parameter, used to indicate a duration of the first period within a second period; a first offset, used to indicate an offset of a starting position of the first period; and a second offset, used to indicate an offset of a starting position of the second period, wherein the second period is a period formed after the one or more periods are concatenated with each other.

[0293] In some possible implementation manners, the starting position of the second period satisfies the following formula:

[0294] wherein n f is a system frame number in which the starting position of the second period is located, L is a number of time units contained in a single system frame, n hf is a time unit sequence number of the starting position of the second period in the system frame, T offset is the second offset, M is a total number of the one or more periods, is a duration of an i-th period in the one or more periods, is an offset of the i-th period in the one or more periods, mod represents a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0295] In some possible implementation manners, when i = 0, the starting position of the i-th period is the starting position of the second period; and when i ≥ 1, is an offset value of the starting position of the i-th period relative to an ending position of an (i-1)-th period.

[0296] In some possible implementation manners, the transmission mode of the SSBs comprises the second mode, the one or more periods comprise a third period, and the first configuration information further comprises one or more of the following parameters: a third parameter, used to indicate a period length of the third period; and a third offset, used to indicate an offset of a starting position of the third period.

[0297] In some possible implementation manners, a starting position of a jth period in the one or more periods satisfies the following formula:

[0298] wherein n fj is a system frame number in which the starting position of the jth period is located, L is a number of time units contained in a single system frame, n hfj is a time unit sequence number of the starting position of the jth period in the system frame, is an offset of the starting position of the jth period, T j is a period length of the jth period, and mod represents a modulo operation, and j is 0 or a positive integer.

[0299] In some possible implementation manners, the SSB configuration of the one or more periods comprises one or more sets of SSB configurations, one set of SSB configurations in the one or more sets of SSB configurations comprises SSB configuration of one or more periods, and the first configuration information further comprises one or more timers, which are respectively used to control a validity duration of the one or more sets of SSB configurations.

[0300] In some possible implementation manners, if the transmission mode of the SSBs is the first mode, the one set of SSB configurations comprises SSB configuration of one period; or if the transmission mode of the SSBs comprises the second mode, the one set of SSB configurations comprises SSB configuration of at least two periods.

[0301] In some possible implementation manners, the one or more timers satisfy any one of the following conditions: if the transmission mode of the SSBs is the first mode, only one timer in the one or more timers is in a started state at the same time; if the transmission mode of the SSBs is the second mode, one or at least two timers in the one or more timers are in the started state at the same time; if the transmission mode of the SSBs is the third mode, at least two timers in the one or more timers are in the started state at the same time, the at least two timers comprise a first timer and a second timer, the first timer corresponds to the first mode, and the second timer corresponds to the second mode.

[0302] In some possible implementation manners, the number of the one or more sets of SSB configurations is N, and the number of the one or more timers is N, where the one or more sets of SSB configurations and the one or more timers satisfy the following conditions: when the pth timer starts, the pth set of SSB configurations takes effect; when the pth timer expires, the pth set of SSB configurations is invalid, if p is less than N, the (p+1)th set of SSB configurations takes effect, and the (p+1)th timer starts, if p is equal to N, the Nth set of SSB configurations is invalid, the 1st set of SSB configurations takes effect, and the 1st timer starts; where N is a positive integer, and p is an integer greater than or equal to 1 and less than or equal to N.

[0303] In some possible implementation manners, the transmission mode of the SSBs is a mode of being transmitted in series according to the first mode, the second mode, and the third mode, the plurality of timers includes a third timer, a fourth timer, and a fifth timer, the third timer is configured to control a duration for which the first mode takes effect, the fourth timer is configured to control a duration for which the second mode takes effect, and the fifth timer is configured to control a duration for which the third mode takes effect.

[0304] In some possible implementation manners, the plurality of timers satisfy the following condition: at the same time, only one of the third timer, the fourth timer, and the fifth timer is in a started state.

[0305] In some possible implementation manners, the receiving, based on the one or more periodic SSB configurations, the SSBs transmitted by the network device includes: determining, according to one or more of the following information, an effective SSB configuration: the one or more periodic SSB configurations, and the one or more timers; and receiving, based on the effective SSB configuration, the SSBs transmitted by the network device.

[0306] In some possible implementation manners, the first configuration information further includes first indication information, and the first indication information is used to indicate the transmission mode of the SSBs.

[0307] In some possible implementation manners, the one or more periodic SSB configurations are related to a beam and / or an area in which the terminal device is located.

[0308] In some possible implementation manners, the obtaining module 1310 is further configured to: obtain a plurality of configuration information, where the plurality of configuration information is respectively related to a plurality of beams and / or a plurality of areas; and the apparatus 1300 further includes a determining module configured to determine, based on an area in which a terminal device is located and an association relationship between the plurality of configuration information and the plurality of beams and / or the plurality of areas, the first configuration information from the plurality of configuration information.

[0309] In a possible implementation, the obtaining module 1310 is configured to receive the first configuration information sent by the network device.

[0310] In a possible implementation, the first configuration information is carried in a system information block (SIB) message or a radio resource control (RRC) signaling.

[0311] In a possible implementation, the first configuration information is predefined by a protocol.

[0312] FIG. 14 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 14, the communication apparatus 1400 includes a first sending module 1410 and a second sending module 1420.

[0313] In a possible implementation, the apparatus 1400 can be used to implement the steps performed by the network device described above.

[0314] The first sending module 1410 is configured to send, to a terminal device, first configuration information, wherein the first configuration information includes synchronization signal / physical broadcast channel block (SSB) configuration of one or more periods.

[0315] The second sending module 1420 is configured to send, to the terminal device, an SSB based on the SSB configuration of the one or more periods, wherein a sending period of the SSB is a period formed by one or more period combinations.

[0316] In a possible implementation, the sending mode of the SSB belongs to one or more of the following modes: a first mode; a second mode; a third mode, which is a mode formed by a combination of the first mode and the second mode; wherein the first mode is to send in a manner that the one or more periods are connected in series with each other, and the second mode is to send in a manner that the one or more periods are superimposed on each other.

[0317] In a possible implementation, the sending mode of the SSB includes the first mode, the one or more periods include a first period, and the first configuration information further includes one or more of the following parameters: a first parameter, used to indicate a period length of the first period; a second parameter, used to indicate a duration of the first period within a second period; a first offset, used to indicate an offset of a starting position of the first period; and a second offset, used to indicate an offset of a starting position of the second period, wherein the second period is a period formed after the one or more periods are connected in series with each other.

[0318] In a possible implementation, the starting position of the second period satisfies the following formula:

[0319] wherein n f is a system frame number in which the starting position of the second type of period is located, L is a number of time units contained in a single system frame, n hf is a time unit sequence number of the starting position of the second type of period within a system frame, T offset is the second offset, M is a total number of the one or more types of periods, is a duration of the i-th type of period in the one or more types of periods, is an offset of the i-th type of period in the one or more types of periods, mod denotes a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

[0320] In some possible implementation manners, when i = 0, the starting position of the i-th type of period is the starting position of the second type of period; and when i ≥ 1, is an offset value of the starting position of the i-th type of period relative to an ending position of an (i-1)-th type of period.

[0321] In some possible implementation manners, the transmission mode of the SSB includes the second mode, the one or more types of periods include a third type of period, and the first configuration information further includes one or more of the following parameters: a third parameter, used to indicate a period length of the third type of period; and a third offset, used to indicate an offset of a starting position of the third type of period.

[0322] In some possible implementation manners, a starting position of a j-th type of period in the one or more types of periods satisfies the following formula:

[0323] wherein n fj is a system frame number in which the starting position of the j-th type of period is located, L is a number of time units contained in a single system frame, n hfj is a time unit sequence number of the starting position of the j-th type of period within a system frame, is an offset of the starting position of the j-th type of period, T j is a period length of the j-th type of period, and mod denotes a modulo operation. J is 0 or a positive integer.

[0324] In some possible implementation manners, the SSB configuration of the one or more types of periods includes one or more sets of SSB configurations, one set of SSB configurations in the one or more sets of SSB configurations includes SSB configurations of one or more types of periods, and the first configuration information further includes one or more timers, which are respectively used to control a validity duration of the one or more sets of SSB configurations.

[0325] In some possible implementation manners, if the transmission mode of the SSB is the first mode, the set of SSB configurations includes one periodic SSB configuration; or if the transmission mode of the SSB includes the second mode, the set of SSB configurations includes at least two periodic SSB configurations.

[0326] In some possible implementation manners, the one or more timers satisfy any one of the following conditions: if the transmission mode of the SSB is the first mode, only one of the one or more timers is in an activated state at the same time; if the transmission mode of the SSB is the second mode, one or at least two of the one or more timers are in the activated state at the same time; if the transmission mode of the SSB is the third mode, at least two of the one or more timers are in the activated state at the same time, and the at least two timers include a first timer corresponding to the first mode and a second timer corresponding to the second mode.

[0327] In some possible implementation manners, the number of the one or more sets of SSB configurations is N, and the number of the one or more timers is N, where the one or more sets of SSB configurations and the one or more timers satisfy the following conditions: when the pth timer is activated, the pth set of SSB configurations takes effect; when the pth timer expires, the pth set of SSB configurations is invalid, if p is less than N, the (p+1)th set of SSB configurations takes effect, and the (p+1)th timer is activated, if p is equal to N, the Nth set of SSB configurations is invalid, the 1st set of SSB configurations takes effect, and the 1st timer is activated; where N is a positive integer, and p is an integer greater than or equal to 1 and less than or equal to N.

[0328] In some possible implementation manners, the transmission mode of the SSB is a mode of being transmitted in series according to the first mode, the second mode, and the third mode, and the plurality of timers include a third timer, a fourth timer, and a fifth timer, the third timer is used to control the duration for which the first mode takes effect, the fourth timer is used to control the duration for which the second mode takes effect, and the fifth timer is used to control the duration for which the third mode takes effect.

[0329] In some possible implementation manners, the plurality of timers satisfy the following condition: only one of the third timer, the fourth timer, and the fifth timer is in the activated state at the same time.

[0330] In some possible implementation, the sending, to the terminal device, the SSB based on the one or more periodic SSB configurations comprises: determining an effective SSB configuration according to one or more of the following information: the one or more periodic SSB configurations, the one or more timers; and sending, to the terminal device, the SSB based on the effective SSB configuration.

[0331] In some possible implementation, the first configuration information further comprises first indication information, the first indication information being used to indicate the sending mode of the SSB.

[0332] In some possible implementation, the one or more periodic SSB configurations are related to a beam and / or a region where the terminal device is located.

[0333] In some possible implementation, the apparatus 1400 further comprises a third sending module, configured to send, to the terminal device, a plurality of configuration information, the plurality of configuration information being respectively related to a plurality of beams and / or a plurality of regions, and the first configuration information being comprised in the plurality of configuration information.

[0334] In some possible implementation, the first configuration information is carried in a system information block (SIB) message or radio resource control (RRC) signaling.

[0335] It should be understood that the apparatus 1300 and the apparatus 1400 are embodied in the form of functional modules. The term “module” herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated or group) and memory for executing one or more software or firmware programs, a combinational logic circuit, and / or other suitable components that provide the described functionality. In an optional example, those skilled in the art can understand that the apparatus 1400 can be embodied as the terminal device in the above-described embodiments, and the apparatus 1400 can be configured to perform each process and / or step corresponding to the terminal device in the above-described method embodiments. The apparatus 1400 can be embodied as the network device in the above-described embodiments, and the apparatus 1400 can be configured to perform each process and / or step corresponding to the network device in the above-described method embodiments. To avoid repetition, details are not described herein.

[0336] The apparatus 1300 described above has the function of implementing the corresponding steps performed by the terminal device in the above-described method, and the apparatus 1400 has the function of implementing the corresponding steps performed by the network device in the above-described method. The above-mentioned functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the above-mentioned functions.

[0337] In embodiments of the present application, the apparatus 1300 and the apparatus 1400 can also be chips, for example, system on chip (SOC) or Modem, etc. Correspondingly, the receiving module and the sending module can be transceiver circuit of the chip, which is not limited here.

[0338] FIG. 15 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. The dashed line in FIG. 15 indicates that the unit or module is optional. The apparatus 1500 can be used to implement the method described in the above method embodiments. The apparatus 1500 can be a chip, a terminal device or a network device.

[0339] The apparatus 1500 can include one or more processors 1510. The processor 1510 can support the apparatus 1500 to implement the method described in the above method embodiments. The processor 1510 can be a general purpose processor or a dedicated processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general purpose processors, digital signal processors (DSP), ASIC, field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, etc. The general purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0340] The apparatus 1500 can also include one or more memories 1520. The memory 1520 stores a program, which can be executed by the processor 1510, so that the processor 1510 performs the method described in the above method embodiments. The memory 1520 can be independent of the processor 1510 or integrated in the processor 1510.

[0341] The apparatus 1500 can also include a transceiver 1530. The processor 1510 can communicate with other devices or chips through the transceiver 1530. For example, the processor 1510 can perform data transceiving with other devices or chips through the transceiver 1530.

[0342] Embodiments of the present application also provide a computer readable storage medium for storing a program. The computer readable storage medium can be applied to the terminal device or the network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the terminal device or the network device in the various embodiments of the present application.

[0343] The embodiment of the present application further provides a computer program product. The computer program product comprises a program. The computer program product can be applied to the terminal device or the network device provided by the embodiment of the present application, and the program causes the computer to execute the method performed by the terminal device or the network device in the various embodiments of the present application.

[0344] The embodiment of the present application further provides a computer program. The computer program can be applied to the terminal device or the network device provided by the embodiment of the present application, and the computer program causes the computer to execute the method performed by the terminal device or the network device in the various embodiments of the present application.

[0345] It should be understood that, in the embodiments 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 also be understood that the determination of B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0346] It should be understood that the term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents that the front and rear associated objects are in an "or" relationship.

[0347] It should be understood that, in the various embodiments of the present application, the size of the sequence number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0348] In the present application, entity A sending information to entity B can be A directly sending to B, or A indirectly sending to B through other entities. Similarly, entity B receiving information from entity A can be entity B directly receiving information sent by entity A, or entity B indirectly receiving information sent by entity A through other entities. Here, entity A and B can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be the information interaction between RAN nodes and terminals, for example, the information interaction between base stations and terminals; the sending and receiving of information can also be the information interaction between two RAN nodes, for example, the information interaction between CU and DU; the sending and receiving of information can also be the information interaction between different modules inside one device, for example, the information interaction between a terminal chip and other modules of the terminal, or the information interaction between a base station chip and other modules in the base station.

[0349] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other manners. For example, the above-described device embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and in actual implementation, another division manner can be adopted, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0350] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0351] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0352] In the above embodiments, all or part can be realized by software, hardware, firmware or any combination thereof. When realized by software, all or part can be realized in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed by a computer, the computer instructions produce the processes or functions described in the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another, for example, the computer instructions can be transferred from one website, computer, server or data center to another through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium readable by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as digital video disc (DVD)) or semiconductor media (such as solid state disk (SSD)) and the like.

[0353] The above descriptions are only the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, the method comprising: Comprise: obtaining first configuration information, wherein the first configuration information comprises one or more periodic synchronization signal / physical broadcast channel block (SSB) configurations; receiving an SSB transmitted by a network device based on the one or more periodic SSB configurations, wherein the transmission period of the SSB is a period formed by combination of the one or more periodic SSB configurations.

2. The method of claim 1, wherein, The transmission mode of the SSB belongs to one or more of the following modes: a first mode; a second mode; a third mode, which is a combination of the first mode and the second mode; wherein the first mode is transmitted in a manner that the one or more periodic SSB configurations are concatenated with each other, and the second mode is transmitted in a manner that the one or more periodic SSB configurations are superimposed with each other.

3. The method of claim 2, wherein, The transmission mode of the SSB includes the first mode, the one or more periodic SSB configurations include a first periodic SSB configuration, and the first configuration information further comprises one or more of the following parameters: a first parameter for indicating a period length of the first periodic SSB configuration; a second parameter for indicating a duration of the first periodic SSB configuration within a second periodic SSB configuration; a first offset for indicating an offset of a starting position of the first periodic SSB configuration; a second offset for indicating an offset of a starting position of the second periodic SSB configuration; wherein the second periodic SSB configuration is formed after the one or more periodic SSB configurations are concatenated with each other.

4. The method of claim 3, wherein, The starting position of the second period satisfies the following equation: wherein n f is the system frame number in which the start of the second periodicity is located, L is the number of time units contained in a single system frame, n hf is the time unit number within the system frame in which the start of the second periodicity is located, T offset is the second offset, and M is the total number of one or more periodicities, a duration of the i-th cycle of the one or more cycles, The offset of the i-th periodic SSB configuration in the one or more periodic SSB configurations, mod represents a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

5. The method of claim 4, wherein, wherein, when i=0, the starting position of the i-th periodic SSB configuration is the starting position of the second periodic SSB configuration; when i > 1, is an offset value of the starting position of the i-th periodic SSB configuration relative to the ending position of the (i-1)-th periodic SSB configuration.

6. The method according to any one of claims 2-5, characterized in that, The transmission mode of the SSB includes the second mode, the one or more periodic SSB configurations include a third periodic SSB configuration, and the first configuration information further comprises one or more of the following parameters: a third parameter for indicating a period length of the third periodic SSB configuration; a third offset for indicating an offset of a starting position of the third periodic SSB configuration.

7. The method of claim 6, wherein, The starting position of the jth period of the one or more periods satisfies the following formula: wherein n fj is the system frame number in which the start position of the jth cycle is located, L is the number of time units contained in a single system frame, n hfj is the time unit number in the system frame in which the start position of the jth cycle is located, and T is an offset for a start position of the jth period j Tj is a period length of the jth period, mod denotes a modulo operation, and j is 0 or a positive integer.

8. The method according to any one of claims 1-7, characterized in that, The SSB configuration of the one or more periodic SSB configurations includes one or more sets of SSB configurations, one set of SSB configurations in the one or more sets of SSB configurations includes one or more periodic SSB configurations, and the first configuration information further comprises one or more timers, wherein the one or more timers are respectively used to control the validity duration of the one or more sets of SSB configurations.

9. The method of claim 8, wherein, wherein, if the transmission mode of the SSB is the first mode, the one set of SSB configurations includes one periodic SSB configuration; or if the transmission mode of the SSB includes the second mode, the one set of SSB configurations includes at least two periodic SSB configurations.

10. The method according to claim 8 or 9, characterized in that, The one or more timers satisfy any one of the following conditions: if the transmission mode of the SSB is the first mode, only one timer in the one or more timers is in a started state at the same time; if the transmission mode of the SSB is the second mode, one or at least two timers in the one or more timers are in a started state at the same time; If the transmission mode of the SSB is the third mode, at least two of the one or more timers are in an activated state at the same time, the at least two timers including a first timer and a second timer, the first timer corresponding to the first mode, and the second timer corresponding to the second mode.

11. The method according to any one of claims 8-10, characterized in that, The number of the one or more sets of SSB configurations is N, and the number of the one or more timers is N, wherein the one or more sets of SSB configurations and the one or more timers satisfy the following conditions: When the pth timer is activated, the pth set of SSB configurations takes effect; When the pth timer expires, the pth set of SSB configurations is invalid, if p is less than N, the (p+1)th set of SSB configurations takes effect, and the (p+1)th timer is activated, if p is equal to N, the Nth set of SSB configurations is invalid, the first set of SSB configurations takes effect, and the first timer is activated; Wherein, N is a positive integer, and p is an integer greater than or equal to 1 and less than or equal to N.

12. The method of claim 8, wherein, The transmission mode of the SSB is transmitted in a manner of concatenation of the first mode, the second mode and the third mode, the plurality of timers including a third timer, a fourth timer and a fifth timer, the third timer being used to control the effective duration of the first mode, the fourth timer being used to control the effective duration of the second mode, and the fifth timer being used to control the effective duration of the third mode.

13. The method of claim 12, wherein, The plurality of timers satisfy the following conditions: At the same time, only one of the third timer, the fourth timer and the fifth timer is in an activated state.

14. The method according to any one of claims 8-13, characterized in that, The receiving of the SSB transmitted by the network device based on the one or more periodic SSB configurations includes: Determining the effective SSB configuration according to one or more of the following information: the one or more periodic SSB configurations, and the one or more timers; Receiving the SSB transmitted by the network device based on the effective SSB configuration.

15. The method of any one of claims 1-14, wherein, The first configuration information further includes first indication information, and the first indication information is used to indicate the transmission mode of the SSB.

16. The method of any one of claims 1-15, wherein, The one or more periodic SSB configurations are related to beams and / or areas where the terminal device is located.

17. The method of claim 16, wherein, The method further includes: Obtaining a plurality of configuration information, the plurality of configuration information being respectively related to a plurality of beams and / or a plurality of areas; Determining the first configuration information from the plurality of configuration information based on the area where the terminal device is located and the association relationship between the plurality of configuration information and the plurality of beams and / or the plurality of areas.

18. A method of wireless communication, the method comprising: It includes: Sending first configuration information to a terminal device, the first configuration information including one or more periodic synchronization signal / physical broadcast channel block (SSB) configurations; Based on the one or more periodic SSB configurations, sending SSBs to the terminal device, the transmission period of the SSBs being a period combined by the one or more periods.

19. The method of claim 18, wherein, The transmission mode of the SSB belongs to one or more of the following modes: First mode; Second mode; Third mode, the third mode being a mode combined by the first mode and the second mode; The first mode is transmitting in a manner that the one or more periods are connected with each other, and the second mode is transmitting in a manner that the one or more periods are superimposed with each other.

20. The method of claim 19, wherein, The transmission mode of the SSBs comprises the first mode, the one or more periods comprise a first period, and the first configuration information further comprises one or more of the following parameters: a first parameter, used to indicate a period length of the first period; a second parameter, used to indicate a duration of the first period within a second period; a first offset, used to indicate an offset of a starting position of the first period; a second offset, used to indicate an offset of a starting position of the second period; The second period is formed after the one or more periods are connected with each other.

21. The method of claim 20, wherein, The starting position of the second period satisfies the following equation: wherein n f is the system frame number in which the start of the second periodicity is located, L is the number of time units contained in a single system frame, n hf is the time unit number within the system frame in which the start of the second periodicity is located, T offset is the second offset, and M is the total number of one or more periodicities, a duration of the i-th cycle of the one or more cycles, The offset of the i-th period in the one or more periods, mod represents a modulo operation, M is a positive integer, and i is an integer greater than or equal to 0 and less than or equal to M-1.

22. The method of claim 21, wherein, When i = 0, the starting position of the i-th period is the starting position of the second period. The offset of the starting position of the i-th period relative to the ending position of the (i-1)-th period. when i > 1, The transmission mode of the SSBs comprises the second mode, the one or more periods comprise a third period, and the first configuration information further comprises one or more of the following parameters:

23. The method of any one of claims 19-22, wherein, a third parameter, used to indicate a period length of the third period; a third offset, used to indicate an offset of a starting position of the third period. The SSB configuration of the one or more periods comprises one or more sets of SSB configurations, one set of SSB configurations in the one or more sets of SSB configurations comprises SSB configurations of one or more periods, and the first configuration information further comprises one or more timers, which are respectively used to control the validity duration of the one or more sets of SSB configurations.

24. The method of claim 23, wherein, The starting position of the jth period of the one or more periods satisfies the following formula: wherein n fj is the system frame number in which the start position of the jth period is located, L is the number of time units contained in a single system frame, n hfj is the time unit number in the system frame in which the start position of the jth period is located, T is an offset for a start position of the jth period j Tj is a period length of the jth period, mod denotes a modulo operation, and j is 0 or a positive integer.

25. The method of any one of claims 18-24, wherein, If the transmission mode of the SSBs is the first mode, the one set of SSB configurations comprises SSB configurations of one period; or 26. The method of claim 25, wherein, If the transmission mode of the SSBs comprises the second mode, the one set of SSB configurations comprises SSB configurations of at least two periods. The one or more timers satisfy any one of the following conditions: If the transmission mode of the SSBs is the first mode, only one timer in the one or more timers is in a started state at the same time; 27. The method of claim 25 or 26, wherein, If the transmission mode of the SSBs is the second mode, one or at least two timers in the one or more timers are in a started state at the same time; If the transmission mode of the SSBs is the third mode, at least two timers in the one or more timers are in a started state at the same time, the at least two timers comprise a first timer and a second timer, the first timer corresponds to the first mode, and the second timer corresponds to the second mode. ​ ​ 28. The method of any one of claims 25-27, wherein, The number of the one or more sets of SSB configurations is N, and the number of the one or more timers is N, wherein the one or more sets of SSB configurations and the one or more timers satisfy the following conditions: When the pth timer starts, the pth set of SSB configurations takes effect; When the pth timer expires, the pth set of SSB configurations is invalid, if p is less than N, the p+1th set of SSB configurations takes effect, and the p+1th timer starts, if p is equal to N, the Nth set of SSB configurations is invalid, the 1st set of SSB configurations takes effect, and the 1st timer starts; Wherein, N is a positive integer, and p is an integer greater than or equal to 1 and less than or equal to N.

29. The method of claim 25, wherein, The transmission mode of the SSB is transmitted in a manner of concatenating the first mode, the second mode and the third mode, the plurality of timers includes a third timer, a fourth timer and a fifth timer, the third timer is used to control the effective duration of the first mode, the fourth timer is used to control the effective duration of the second mode, and the fifth timer is used to control the effective duration of the third mode.

30. The method of claim 29, wherein, The plurality of timers satisfy the following conditions: At the same time, only one of the third timer, the fourth timer and the fifth timer is in the starting state.

31. The method of any one of claims 25-30, wherein, The SSB is transmitted to the terminal device based on the one or more periodic SSB configurations, including: According to one or more of the following information, determine the effective SSB configuration: one or more periodic SSB configurations, one or more timers; Based on the effective SSB configuration, SSB is transmitted to the terminal device.

32. The method of any one of claims 18-31, wherein, The first configuration information further includes first indication information, and the first indication information is used to indicate the transmission mode of the SSB.

33. The method of any one of claims 18-32, wherein, The one or more periodic SSB configurations are related to beams and / or the area where the terminal device is located.

34. A communications device, characterized by Including: The processor is coupled with the memory, and the memory is used to store computer programs, when the processor invokes the computer programs, the communication device executes the method as claimed in any one of claims 1 to 17, or as claimed in any one of claims 18 to 33.

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