CN115669126A

CN115669126A - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN115669126A
Application number: CN202080101127.6A
Authority: CN
Inventors: 胡奕; 李海涛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2023-01-31
Also published as: WO2022021225A1

Abstract

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, wherein under the scene of multiplexing and deploying adjacent satellite beam frequencies in an NTN, the same frequency interference among different SSBs can be effectively reduced by introducing SSB frequency hopping transmission corresponding to the transmission of MIB and SIB, and the initial access performance of the terminal equipment is improved. The wireless communication method includes: the terminal device searches for SSBs at frequency locations corresponding to a plurality of synchronization grids, where the plurality of synchronization grids respectively correspond to SSBs of different satellite beams for transmission, or the plurality of synchronization grids respectively correspond to different satellite beams.

Description

Wireless communication method, terminal equipment and network equipment

Technical Field

The embodiments of the present application relate to the field of communications, and in particular, to a wireless communication method, a terminal device, and a network device.

Background

A New air interface (5-Generation New Radio,5G NR) system of the fifth Generation mobile communication technology defines a Non-terrestrial network (NTN) system deployment scenario including a satellite network, and by means of a wide area coverage capability of a satellite, the NTN system can achieve continuity of a 5G NR service. In order to reduce co-channel interference between different satellite beams, the network may employ different frequency points/carriers/frequency bands for adjacent satellite beams when deployed. For transmission of Master Information Block (MIB) and System Information Block (SIB), transmission is repeated in the same frequency position by traversing each Synchronization Signal Block (SSB) beam direction. How to avoid co-channel interference between different SSB beams is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, wherein under the scene of multiplexing and deploying adjacent satellite beam frequencies in an NTN, the same frequency interference among different SSBs can be effectively reduced by introducing SSB frequency hopping transmission corresponding to the transmission of MIB and SIB, and the initial access performance of the terminal equipment is improved.

In a first aspect, a wireless communication method is provided, and the method includes:

the terminal device searches for SSBs at frequency locations corresponding to a plurality of synchronization grids, where the plurality of synchronization grids respectively correspond to SSBs of different satellite beams for transmission, or the plurality of synchronization grids respectively correspond to different satellite beams.

In a second aspect, a wireless communication method is provided, the method comprising:

the network device transmits SSBs at frequency locations corresponding to a plurality of synchronization grids, wherein the plurality of synchronization grids correspond to SSBs of different satellite beams, respectively, or the plurality of synchronization grids correspond to different satellite beams, respectively.

In a third aspect, a wireless communication method is provided, the method comprising:

and the terminal equipment receives the PDCCH which is sent by the network equipment in a frequency hopping mode and used for indicating SIB1 transmission.

In a fourth aspect, a wireless communication method is provided, the method comprising:

the network equipment transmits the PDCCH for indicating SIB1 transmission by adopting a frequency hopping mode.

In a fifth aspect, a terminal device is provided for executing the method in the first aspect.

In particular, the terminal device comprises functional modules for performing the method in the first aspect described above.

In a sixth aspect, a network device is provided for performing the method of the second aspect.

In particular, the network device comprises functional modules for performing the method in the second aspect described above.

In a seventh aspect, a terminal device is provided for executing the method in the third aspect.

In particular, the terminal device comprises functional modules for performing the method in the third aspect described above.

In an eighth aspect, a network device is provided for performing the method in the fourth aspect.

In particular, the network device comprises functional modules for performing the method in the fourth aspect described above.

In a ninth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect.

In a tenth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the second aspect.

In an eleventh aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the third aspect.

In a twelfth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the fourth aspect.

In a thirteenth aspect, there is provided an apparatus for implementing the method of any one of the first to fourth aspects above.

Specifically, the apparatus includes: a processor for calling and running the computer program from the memory so that the apparatus on which the apparatus is installed performs the method of any of the first to fourth aspects described above.

In a fourteenth aspect, a computer-readable storage medium is provided for storing a computer program for causing a computer to perform the method of any one of the first to fourth aspects described above.

In a fifteenth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any of the first to fourth aspects described above.

In a sixteenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any of the first to fourth aspects described above.

Through the technical solutions of the first and second aspects, the network device sends the SSBs at different frequency positions, that is, the network device sends the SSBs by frequency hopping, which can effectively reduce co-frequency interference between different SSBs and improve the initial access performance of the terminal device.

Through the technical solutions of the third and fourth aspects, the network device adopts the PDCCH which is sent in a frequency hopping manner and used for indicating SIB1 transmission, and by introducing PDCCH frequency hopping transmission, co-channel interference between different SSBs can be effectively reduced, and the initial access performance of the terminal device is improved.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture to which an embodiment of the present application is applied.

Fig. 2 is a schematic diagram of one type of satellite beam provided herein.

Fig. 3 is a schematic flow chart of a wireless communication method provided according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a transmitting SSB provided according to an embodiment of the present application.

Fig. 5 is a schematic flow chart of another wireless communication method provided according to an embodiment of the application.

Fig. 6 is an exemplary diagram for transmitting a PDCCH indicating SIB1 transmission according to an embodiment of the present application.

Fig. 7 is an exemplary diagram of another PDCCH provided in accordance with an embodiment of the present application and transmitted for indicating SIB1 transmission.

Fig. 8 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of another network device provided in accordance with an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 13 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.

Fig. 14 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort with respect to the embodiments in the present application belong to the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an Advanced Long Term Evolution (Advanced Long Term Evolution, LTE-a) System, a New Radio (NR) System, an Evolution System of an NR System, an LTE (LTE-based Access to unlicensed spectrum, LTE-U) System on an unlicensed spectrum, an NR (NR-based Access to unlicensed spectrum, non-Terrestrial communication network (network-telecommunications), a Wireless Local Area network (UMTS) System, a Wireless Local Area network (UMTS) 5 (Universal Mobile telecommunications network, UMTS) System, a Wireless Local Area network (Wireless Telecommunication System, wiFi) System, a Wireless Local Area network (Wireless Telecommunication System, or Wireless Telecommunication System, and the like.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technologies, mobile Communication systems will support not only conventional Communication, but also, for example, device to Device (D2D) Communication, machine to Machine (M2M) Communication, machine Type Communication (MTC), vehicle to Vehicle (V2V) Communication, or Vehicle networking (V2X) Communication, and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; alternatively, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where the licensed spectrum may also be regarded as an unshared spectrum.

Various embodiments are described in conjunction with network Equipment and terminal Equipment, where the terminal Equipment may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User device.

The terminal device may be a STATION (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) STATION, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next generation communication system such as an NR Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.).

In this embodiment, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in city (smart city), a wireless terminal device in smart home (smart home), or the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of equipment that uses wearable technique to carry out intelligent design, develop can dress to daily wearing, such as glasses, gloves, wrist-watch, dress and shoes. The wearable device may be worn directly on the body or may be a portable device integrated into the user's clothing or accessory. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, a relay Station or an Access Point, a vehicle-mounted device, a wearable device, and a network device or Base Station (gbb) in an NR network, or a network device or Base Station (gbb) in a PLMN network for future evolution, or a network device in an NTN network, and the like.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a geosynchronous Orbit (GEO) satellite, a High Elliptic Orbit (HEO) satellite, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.

In this embodiment of the present application, a network device may provide a service for a cell, and a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which are not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, a indicates B, which may mean that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, e.g. a indicates C, by which B may be obtained; it can also be shown that there is an association between a and B.

In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and be indicated, configure and configured, and so on.

The 5G NR system defines the NTN system deployment scenario including the satellite network. The NTN generally provides communication services to terrestrial users by way of satellite communications. Satellite communications have many unique advantages over terrestrial cellular communications. First, satellite communication is not limited by user regions, for example, general terrestrial communication cannot cover regions where communication equipment cannot be set up, such as the sea, mountains, desert, and the like, or communication coverage is not performed due to sparse population, and for satellite communication, since one satellite can cover a large ground and the satellite can orbit around the earth, theoretically every corner on the earth can be covered by satellite communication. Second, satellite communication has great social value. Satellite communication can be covered in remote mountainous areas, poor and laggard countries or areas with lower cost, so that people in the areas can enjoy advanced voice communication and mobile internet technology, the digital gap between the areas is favorably reduced and developed, and the development of the areas is promoted. Thirdly, the satellite communication distance is long, and the cost of communication is not obviously increased when the communication distance is increased; and finally, the satellite communication has high stability and is not limited by natural disasters.

Communication satellites are classified into Low-Earth Orbit (LEO) satellites, medium-Earth Orbit (MEO) satellites, geosynchronous Orbit (GEO) satellites, high-elliptic Orbit (HEO) satellites, and the like according to the difference in orbital height.

For example, LEO satellites range in altitude from 500km to 1500km, with corresponding orbital periods of about 1.5 hours to 2 hours. The signal propagation delay for inter-user single-hop communications is typically less than 20ms. Maximum satellite visibility time 20 minutes. The signal propagation distance is short, the link loss is less, and the requirement on the transmitting power of the user terminal is not high.

As another example, the GEO satellite orbit has a height of 35786km and a period of 24 hours of rotation around the earth. The signal propagation delay for inter-user single-hop communications is typically 250ms.

For the NTN system, in order to ensure the coverage of the satellite and improve the system capacity of the entire satellite communication system, the satellite covers the ground by using multiple beams, and one satellite can form dozens or even hundreds of beams to cover the ground; one satellite beam may cover a ground area several tens to hundreds of kilometers in diameter.

A satellite beam is the smallest unit of coverage of the earth's surface by a satellite, corresponding to different directions. Typically, a satellite provides coverage of the earth's surface by hundreds or thousands of satellite beams. These satellite beams may be deployed as different cells or within the same cell. In consideration of the co-channel interference possibly caused between adjacent satellite beams, a frequency reuse factor greater than 1 is generally considered, that is, adjacent satellite beams are distinguished by using different frequency points/carriers/frequency bands, as shown in fig. 3, satellite beams of the same pattern use the same frequency points/carriers/frequency bands.

It should be understood that, in this embodiment of the present application, NR may also be deployed independently, and in order to reduce air interface signaling, recover wireless connection quickly, and recover data service quickly in a 5G network environment, a new Radio Resource Control (RRC) state, that is, an RRC _ INACTIVE state, is defined. This state is distinguished from the RRC _ IDLE and RRC _ CONNECTED states.

In RRC _ IDLE state: the mobility is cell selection and reselection based on terminal equipment, paging is initiated by a Core Network (CN), and a paging area is configured by the CN. The base station side does not have Access Stratum (AS) context of the terminal equipment, and does not have RRC connection.

In RRC _ CONNECTED state: RRC connection exists, and the base station and the terminal equipment have the AS context of the terminal equipment. The network device knows that the location of the terminal device is at a particular cell level. Mobility is network device controlled mobility. Unicast data may be transmitted between the terminal device and the base station.

RRC _ INACTIVE: mobility is cell selection and reselection based on terminal equipment, connection between CN-NR exists, the AS context of the terminal equipment exists on a certain base station, paging is triggered by a Radio Access Network (RAN), a paging area based on the RAN is managed by the RAN, and the Network equipment knows that the position of the terminal equipment is based on the paging area level of the RAN.

It should be noted that the inactive state may also be referred to as a deactivated state, which is not limited in this application.

For an initial access terminal in an NR system, a cell search is first performed after entering a network. The main purpose of cell search is to find a cell, and since the UE generally lacks prior knowledge of the actual deployment situation of the cell, in the cell search process, the UE needs to determine the cell position by means of frequency sweeping and the like within a potential deployable frequency band range of the cell, and then acquire cell information and attempt to initiate cell access.

A synchronization grid is a series of frequency points that can be used to transmit synchronization signals. When the network is deployed, a cell needs to be established, the cell needs to have a specific synchronization signal, and the configurable position of the synchronization signal corresponds to the position of the synchronization grid. For example, point a in the frequency domain is a frequency point position in a synchronization grid, when an operator deploys a cell near point a, the center position of the synchronization signal of the cell may be configured at point a, and when the UE searches for the cell in the frequency band where point a is located, the UE may find the cell through the synchronization signal at point a, thereby accessing the cell.

In the NR system, the SSB may be used for initial access of the UE, and may also be configured as a measurement reference signal to the UE for measurement. The former is used for UE to access a cell, the frequency domain position of the former is positioned on a synchronization grid, and SIB1 information is associated; the latter does not have the associated SIB1 information and cannot be used for the UE to access the cell even if its frequency domain location is also on the synchronization grid. The former is called Cell-Defining SSB (Cell-Defining SSB), and the latter is called Non-Cell-Defining SSB. That is, the UE can access the cell only through the cell-defined SSB. Non-cell-defining SSBs may also be configured at the location of the synchronization grid. For the initially accessed UE, when the SSBs are searched according to the synchronization grid, the two types of SSBs may be searched, and when the non-cell-defined SSBs are searched, since the SSBs do not have the associated SIB1 information, the UE cannot obtain the control information for receiving the SIB1 through MIB information carried by a Physical Broadcast Channel (PBCH) in the SSB, and the UE must continue to search for the cell-defined SSB access cell. The base station may carry indication information in the non-cell-defining SSB, which is used to indicate a frequency offset between a Global Synchronization Channel Number (GSCN) where the cell-defining SSB is located and a currently searched GSCN where the non-cell-defining SSB is located. Thus, even if the UE detects a non-cell-defined SSB, the UE can determine the GSCN where the cell-defined SSB is located according to the indication information carried in the non-cell-defined SSB. The UE can directly search the cell definition SSB at the pointed target GSCN position based on the auxiliary information, thereby avoiding the blind search of the cell definition SSB by the UE and reducing the time delay and the power consumption of the cell search. The GSCN offset information is indicated by information carried by PBCH.

In the initial access process, the UE tries to search for the SSB through the defined possible time-frequency positions of the SSB, and obtains time and frequency synchronization, radio frame timing, and physical cell Identification (ID) through the detected SSB. Further, the UE may also determine, through MIB information carried in the PBCH, search space information of a Physical Downlink Control Channel (PDCCH) of a Physical Downlink Shared Channel (PDSCH) carrying the SIB1 in scheduling, that is, a Control Resource Set (core) #0 and a search space (search space) #0.

The UE monitors a PDCCH of a PDSCH scheduling the SIB1 on the search space #0 based on the MIB indication, thereby acquiring SIB1 information.

It should be noted that, in order to reduce the co-channel interference between different satellite beams, different frequency points/carriers/frequency bands may be used for adjacent satellite beams. A satellite beam typically contains one or more SSB beams. For the transmission of MIB and SIB, the transmissions are repeated in the same frequency position by traversing the SSB beam directions, in which case co-channel interference may occur between different SSB beams. How to avoid co-channel interference between different SSB beams is an urgent problem to be solved.

Based on the above problems, the present application provides a frequency hopping scheme, which can effectively reduce co-channel interference between different SSBs and improve initial access performance of a terminal device by introducing MIB frequency hopping transmission and SIB frequency hopping transmission in an NTN adjacent satellite beam frequency reuse deployment scenario.

The technical solution of the present application is described in detail by specific examples below.

Fig. 3 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, and as shown in fig. 3, the method 200 may include at least some of the following:

s210, the network device sends SSBs at frequency positions corresponding to a plurality of synchronous grids, wherein the plurality of synchronous grids respectively correspond to SSBs of different satellite beams for sending, or the plurality of synchronous grids respectively correspond to different satellite beams for sending;

s220, the terminal device searches SSBs at frequency positions corresponding to the plurality of synchronous grids.

Optionally, the embodiments of the present application are applied to a deployment scenario of frequency reuse of adjacent satellite beams in an NTN, and in addition, the embodiments of the present application are applied to an initial access process of a terminal device. Of course, the method can also be applied to other scenes, and the method is not limited in the application.

It should be understood that the synchronization grid is a series of frequency points that can be used to transmit synchronization signals. Reference may be made to the above description of the synchronization grid, which is not repeated herein.

In the embodiment of the present application, the plurality of synchronization grids respectively correspond to SSB transmissions of different satellite beams, or the plurality of synchronization grids respectively correspond to different satellite beams, in which case at least one SSB corresponding to one satellite beam is transmitted on one synchronization grid and SSBs corresponding to different satellite beams are transmitted on different synchronization grids.

That is to say, in the embodiment of the present application, the network device sends the SSBs at different frequency locations, that is, the network device sends the SSBs by frequency hopping, which can effectively reduce co-channel interference between different SSBs and improve the initial access performance of the terminal device.

It should be noted that, in the embodiment of the present application, the SSB may also be referred to as a synchronization signal/physical broadcast channel block (SS/PBCH block).

Optionally, in some embodiments, the SSB comprises a Cell-Defining SSB (Cell-Defining SSB).

It should be noted that the terminal device may access the cell through the cell definition SSB.

Optionally, the cell definitions SSBs sent at the frequency locations corresponding to the multiple synchronization grids correspond to the same cell. That is, the network device transmits cell-defining SSBs for the same cell at frequency locations corresponding to the multiple synchronization grids corresponding to the transmission of cell-defining SSBs of different satellite beams. In this case, the cell definition SSB transmitted by the network device at the frequency location corresponding to one synchronization grid corresponds to at least one SSB beam included in one satellite beam.

Optionally, the MIB in the cell-defined SSB is used for the terminal device to acquire control information for receiving SIB1 during the initial access process. That is, the terminal device may acquire control information for receiving SIB1 in an initial access procedure based on the MIB in the cell definition SSB after searching for the cell definition SSB.

Specifically, when the terminal device searches for a cell definition SSB in a frequency location corresponding to at least one of the plurality of synchronization grids, the terminal device obtains control information for receiving SIB1 according to the MIB in the cell definition SSB, and the terminal device receives SIB1 according to the control information.

Therefore, in the embodiment of the present application, the SSB hopping transmission is performed, that is, MIB hopping transmission in the SSB is performed. Furthermore, the network device may configure SIB1 to also hop for transmission when configuring control information for receiving SIB1. That is to say, MIB frequency hopping transmission and SIB frequency hopping transmission may be introduced in the embodiments of the present application, which can effectively reduce co-channel interference between different SSBs and improve initial access performance of the terminal device.

Optionally, in some embodiments, the SSB comprises a Non-Cell-Defining SSB (Non Cell-Defining SSB). The non-cell-defined SSB may be configured as a measurement reference signal to the terminal device for measurement. The non-cell-defining SSB has no associated SIB1 information and cannot be used for the terminal device to access the cell even if its frequency domain location is also on the synchronization grid.

It should be noted that, for the non-cell-defining SSBs transmitted at the frequency locations corresponding to the synchronization grids, the network device transmits the non-cell-defining SSBs at the frequency locations corresponding to the plurality of synchronization grids corresponding to the transmission of the non-cell-defining SSBs of different satellite beams. In this case, the non-cell-defined SSB transmitted by the network device at the frequency location corresponding to the synchronization grid corresponds to at least one SSB beam included in one satellite beam.

Specifically, when the terminal device searches for a non-cell-defined SSB in a frequency position corresponding to at least one of the multiple synchronization grids, the terminal device obtains, according to the MIB in the non-cell-defined SSB, a frequency offset between the GSCN where the cell-defined SSB is located and the GSCN where the non-cell-defined SSB is located; the terminal equipment determines the GSCN where the cell definition SSB is located according to the frequency offset, and searches the GSCN where the cell definition SSB is located. Further, after searching the cell-defined SSB on the GSCN where the cell-defined SSB is located, the terminal device may obtain control information for receiving SIB1 according to the MIB in the cell-defined SSB, and receive SIB1 according to the control information.

Optionally, in this embodiment of the present application, the control information includes CORESET #0 and search space #0. Of course, some other information may be available, and the present application is not limited to this.

Optionally, in some embodiments of the present application, the frequency locations at which the non-cell-defining SSBs are transmitted are the same relative to the frequency offset values of the cell-defining SSBs for different satellite beams. For example, as shown in fig. 4, the network device sends the non-cell-defining SSB1 at the frequency position corresponding to the synchronization grid 6 through the satellite beam 1, where the MIB in the non-cell-defining SSB1 indicates that the frequency offset (offset) between the GSCN where the cell-defining SSB1 is located and the GSCN where the non-cell-defining SSB1 is located is 6 synchronization grids, that is, the network device sends the cell-defining SSB1 at the frequency position corresponding to the synchronization grid 12; the network device sends the non-cell-defining SSB2 on the frequency position corresponding to the synchronization grid 5 through the satellite beam 2, where the MIB in the non-cell-defining SSB2 indicates that the frequency offset (offset) between the GSCN where the cell-defining SSB2 is located and the GSCN where the non-cell-defining SSB2 is located is also 6 synchronization grids, that is, the network device sends the cell-defining SSB2 on the frequency position corresponding to the synchronization grid 11; the network device sends the non-cell-defining SSB3 on the frequency position corresponding to the synchronization grid 4 through the satellite beam 3, where the MIB in the non-cell-defining SSB3 indicates that the frequency offset (offset) between the GSCN where the cell-defining SSB3 is located and the GSCN where the non-cell-defining SSB3 is located is also 6 synchronization grids, that is, the network device sends the cell-defining SSB3 on the frequency position corresponding to the synchronization grid 10; the network device sends the non-cell-defining SSB4 on the frequency location corresponding to the synchronization grid 3 through the satellite beam 4, where the MIB in the non-cell-defining SSB4 indicates that the frequency offset (offset) between the GSCN where the cell-defining SSB4 is located and the GSCN where the non-cell-defining SSB4 is located is also 6 synchronization grids, that is, the network device sends the cell-defining SSB4 on the frequency location corresponding to the synchronization grid 9.

Therefore, in the embodiment of the present application, in the scenario of frequency reuse deployment of adjacent satellite beams in the NTN, corresponding to transmission of the MIB and the SIB, the network device sends the SSBs at different frequency positions, that is, the network device sends the SSBs by frequency hopping, which can effectively reduce co-channel interference between different SSBs and improve initial access performance of the terminal device.

Fig. 5 is a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application, and as shown in fig. 5, the method 300 may include at least some of the following:

s310, the network equipment sends a PDCCH for indicating SIB1 transmission by adopting a frequency hopping mode;

s320, the terminal equipment receives the PDCCH which is sent by the network equipment in a frequency hopping mode and used for indicating SIB1 transmission.

Optionally, in this embodiment of the present application, the frequency hopping method includes:

in one SIB1 repetition period, in the process of transmitting a PDCCH indicating SIB1 transmission while traversing each SSB beam direction, PDCCHs in different SSB beam directions are transmitted on different frequency resource locations.

Optionally, the frequency hopping pattern is pre-configured or protocol agreed, and/or the frequency hopping interval is pre-configured or protocol agreed.

It should be understood that a satellite beam typically contains one or more SSB beams.

In the embodiment of the present application, in one SIB1 repetition period, in the process of sending a PDCCH indicating SIB1 transmission in a direction traversing each SSB beam, PDCCHs in different SSB beam directions are sent at different frequency resource positions, that is, in the embodiment of the present application, a network device sends the PDCCHs at different frequency positions, that is, the network device sends the PDCCHs using different frequency position hopping frequencies in the process of sending in the direction traversing each SSB beam, which can effectively reduce co-frequency interference between different SSBs, and improve initial access performance of a terminal device.

Optionally, in this embodiment of the present application, the terminal device attempts to receive a PDCCH indicating SIB1 transmission on PDCCH time-frequency resources corresponding to multiple SSB beams of the SSB beams traversed by the network device; or, the terminal device attempts to receive a PDCCH indicating SIB1 transmission on a PDCCH time-frequency resource corresponding to one of the SSB beams traversed by the network device.

Optionally, in some embodiments, the PDCCH indicating SIB1 transmission hops within a frequency range corresponding to core set #0. As shown in fig. 6, in one SIB1 repetition period, in the process that the PDCCH instructing SIB1 transmission traverses the directions of the SSB beam 1, the SSB beam 2, the SSB beam 3, and the SSB beam 4 in the frequency range corresponding to CORESET #0 to transmit, the PDCCHs in different SSB beam directions are transmitted on different frequency resource positions in the frequency range corresponding to CORESET #0. In addition, for PDCCH transmission in other SIB1 repetition periods, the frequency hopping transmission mode is similar, and is not described herein again.

Optionally, in other embodiments, the PDCCH indicating SIB1 transmission is transmitted in a frequency range corresponding to CORESET #0, and CORESET #0 corresponds to a different frequency range in a different time period. As shown in fig. 7, CORESET #0 corresponds to different frequency ranges in different time periods, and in a SIB1 repetition period, in the process that a PDCCH indicating SIB1 transmission traverses the directions of the SSB beam 1, the SSB beam 2, the SSB beam 3, and the SSB beam 4 in the frequency range corresponding to CORESET #0 to transmit, the PDCCH in different SSB beam directions is transmitted on different frequency resource positions in the frequency range corresponding to CORESET #0. In addition, for PDCCH transmission in other SIB1 repetition periods, the frequency hopping transmission mode is similar, and is not described herein again.

Optionally, in this embodiment of the present application, the network device may send, according to a first corresponding relationship, a PDCCH for indicating SIB1 transmission by using a frequency hopping method, where the first corresponding relationship is a corresponding relationship between an SSB beam index corresponding to the PDCCH and a time window, and the network device sends the PDCCH in a frequency resource range corresponding to a corresponding SSB beam index in one time window.

Optionally, the frequency resource range corresponding to the SSB beam 1 is pre-configured or agreed by a protocol, and the frequency resource range corresponding to the SSB beam n is determined according to the frequency resource range corresponding to the SSB beam n-1 and the frequency hopping interval, where n is greater than or equal to 2, and n is an integer.

Optionally, the frequency resource range corresponding to the SSB beam index is pre-configured or agreed by the protocol.

Optionally, the first correspondence is pre-configured or agreed upon by a protocol.

Therefore, in the embodiment of the present application, in a scenario of frequency multiplexing deployment of adjacent satellite beams in an NTN, corresponding to transmission of an MIB and an SIB, a network device uses a PDCCH sent in a frequency hopping manner to indicate transmission of an SIB1, and by introducing the PDCCH and SSB frequency hopping transmission, co-channel interference between different SSBs can be effectively reduced, and initial access performance of a terminal device is improved.

While method embodiments of the present application are described in detail above with reference to fig. 3-7, apparatus embodiments of the present application are described in detail below with reference to fig. 8-14, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may be had with reference to method embodiments.

Fig. 8 shows a schematic block diagram of a terminal device 400 according to an embodiment of the application. As shown in fig. 8, the terminal apparatus 400 includes:

a communication unit 410, configured to search for the synchronization signal block SSB at frequency locations corresponding to a plurality of synchronization grids, wherein the plurality of synchronization grids correspond to SSB transmissions of different satellite beams respectively, or the plurality of synchronization grids correspond to different satellite beams respectively.

Optionally, the terminal device 400 further includes: the processing unit(s) 420 are provided,

when the terminal device searches for a cell definition SSB in a frequency location corresponding to at least one of the synchronization grids, the processing unit 420 is configured to obtain control information for receiving a system information block SIB1 according to a master information block MIB in the cell definition SSB, and the communication unit 410 is further configured to receive the SIB1 according to the control information.

Optionally, the cell definitions SSBs sent in the frequency positions corresponding to the multiple synchronization grids correspond to the same cell.

Optionally, the terminal device 400 further includes: the processing unit(s) 420 are configured to,

when the terminal device searches for a non-cell-defined SSB at a frequency location corresponding to at least one of the plurality of synchronization grids, the processing unit 420 is configured to obtain a frequency offset between the global synchronization channel number GSCN where the cell-defined SSB is located and the GSCN where the non-cell-defined SSB is located according to the MIB in the non-cell-defined SSB;

the processing unit 420 is further configured to determine, according to the frequency offset, a GSCN where the cell definition SSB is located, and the communication unit 410 is further configured to search for the cell definition SSB on the GSCN where the cell definition SSB is located.

Optionally, the processing unit 420 is further configured to acquire control information for receiving SIB1 according to the MIB in the cell definition SSB, and the communication unit 410 is further configured to receive SIB1 according to the control information.

Optionally, the control information includes a control resource set CORESET #0 and a search space #0.

Optionally, the frequency locations at which the non-cell-defining SSBs are transmitted are the same relative to the frequency offset values of the cell-defining SSBs for the different satellite beams.

Optionally, at least one SSB corresponding to one satellite beam is transmitted on one synchronization grid and SSBs corresponding to different satellite beams are transmitted on different synchronization grids.

Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to a terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing a corresponding flow of the terminal device in the method 200 shown in fig. 3, and are not described herein again for brevity.

Fig. 9 shows a schematic block diagram of a network device 500 according to an embodiment of the application. As shown in fig. 9, the network device 500 includes:

a communication unit 410, configured to transmit the synchronization signal block SSB at a frequency position corresponding to a plurality of synchronization grids, where the plurality of synchronization grids correspond to SSB transmissions of different satellite beams respectively, or the plurality of synchronization grids correspond to different satellite beams respectively.

Optionally, the SSB comprises a cell-defining SSB.

Optionally, the cell definitions SSBs sent at the frequency locations corresponding to the multiple synchronization grids correspond to the same cell.

Optionally, the master information block MIB in the cell definition SSB is used for the terminal device to acquire control information for receiving the system information block SIB1 during the initial access procedure.

Optionally, the SSB comprises a non-cell-defining SSB.

Optionally, the frequency location at which the network device transmits the non-cell-defining SSB is the same for different satellite beams relative to the frequency offset value for the cell-defining SSB.

Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 500 are respectively for implementing the corresponding flow of the network device in the method 200 shown in fig. 3, and are not described herein again for brevity.

Fig. 10 shows a schematic block diagram of a terminal device 600 according to an embodiment of the application. As shown in fig. 10, the terminal apparatus 600 includes:

a communication unit 610, configured to receive a physical downlink control information PDCCH, which is sent by a network device in a frequency hopping manner and used for indicating transmission of a system information block SIB1.

Optionally, the frequency hopping manner includes:

in one SIB1 repetition period, in the process of transmitting a PDCCH indicating SIB1 transmission while traversing each synchronization signal block SSB beam direction, PDCCHs in different SSB beam directions are transmitted on different frequency resource locations.

Optionally, the communication unit 610 is specifically configured to:

attempting to receive a PDCCH for indicating SIB1 transmission on PDCCH time-frequency resources corresponding to a plurality of SSB beams traversed by the network equipment; alternatively, the first and second electrodes may be,

attempting to receive a PDCCH for indicating SIB1 transmission on a PDCCH time-frequency resource corresponding to one of the SSB beams traversed by the network device.

Optionally, the PDCCH for instructing SIB1 transmission hops within a frequency range corresponding to the control resource set CORESET #0.

Optionally, the PDCCH for instructing SIB1 transmission is transmitted in a frequency range corresponding to core set #0, and the core set #0 corresponds to different frequency ranges in different time periods.

Optionally, the frequency hopping pattern is pre-configured or protocol agreed, and/or the frequency hopping interval is pre-configured or protocol agreed. .

Optionally, the PDCCH for indicating SIB1 transmission is sent by the network device according to the first corresponding relationship,

the first mapping relationship is a mapping relationship between an SSB beam index corresponding to the PDCCH and a time window, and the network device transmits the PDCCH in a frequency resource range corresponding to a corresponding SSB beam index in a time window.

Optionally, the frequency resource range corresponding to the SSB beam 1 is pre-configured or agreed by a protocol, and the frequency resource range corresponding to the SSB beam n is determined according to the frequency resource range corresponding to the SSB beam n-1 and the frequency hopping interval, n is greater than or equal to 2, and n is an integer.

It should be understood that the terminal device 600 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 600 are respectively for implementing the corresponding flow of the terminal device in the method 300 shown in fig. 5, and are not described herein again for brevity.

Fig. 11 shows a schematic block diagram of a network device 700 according to an embodiment of the present application. As shown in fig. 11, the network device 700 includes:

a communication unit 710, configured to send, by using a frequency hopping scheme, physical downlink control information PDCCH indicating transmission of a system information block SIB1.

Optionally, the frequency hopping manner includes:

Optionally, the communication unit 710 is specifically configured to:

and transmitting a PDCCH for indicating SIB1 transmission in a frequency hopping manner according to the first correspondence relationship, wherein,

the first mapping relationship is a mapping relationship between the SSB beam index corresponding to the PDCCH and a time window, and the network device transmits the PDCCH in a frequency resource range corresponding to a corresponding SSB beam index in a time window.

It should be understood that the network device 700 according to the embodiment of the present application may correspond to a network device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 700 are respectively for implementing corresponding flows of the network device in the method 300 shown in fig. 5, and are not described herein again for brevity.

Fig. 12 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application. The communication device 800 shown in fig. 12 comprises a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 12, the communication device 800 may further include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, as shown in fig. 12, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and in particular, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 830 may include a transmitter and a receiver, among others. The transceiver 830 may further include one or more antennas.

Optionally, the communication device 800 may specifically be a network device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 800 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 800 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 13 is a schematic configuration diagram of an apparatus according to an embodiment of the present application. The apparatus 900 shown in fig. 13 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 13, the apparatus 900 may further include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, the apparatus 900 may further comprise an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the apparatus 900 may further comprise an output interface 940. The processor 910 can control the output interface 940 to communicate with other devices or chips, and in particular, can output information or data to other devices or chips.

Optionally, the apparatus may be applied to the network device in the embodiment of the present application, and the apparatus may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the apparatus may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the apparatus may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

Alternatively, the device mentioned in the embodiments of the present application may also be a chip. For example, it may be a system-on-chip, a system-on-chip or a system-on-chip, etc.

Fig. 14 is a schematic block diagram of a communication system 1000 according to an embodiment of the present application. As shown in fig. 14, the communication system 1000 includes a terminal device 1010 and a network device 1020.

The terminal device 1010 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1020 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, no further description is provided here.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. With respect to such understanding, the technical solutions of the present application, which are essential or part of the technical solutions contributing to the prior art, may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

the terminal device searches for a synchronization signal block SSB at a frequency position corresponding to a plurality of synchronization grids, where the plurality of synchronization grids respectively correspond to SSBs of different satellite beams for transmission, or the plurality of synchronization grids respectively correspond to different satellite beams.
The method of claim 1, wherein the method further comprises:

when the terminal device searches a cell definition SSB in a frequency position corresponding to at least one of the plurality of synchronization grids, the terminal device obtains control information for receiving a system information block SIB1 according to a master information block MIB in the cell definition SSB, and the terminal device receives the SIB1 according to the control information.
The method of claim 2, wherein the cell definition SSBs transmitted on the frequency locations corresponding to the plurality of synchronization grids correspond to the same cell.
The method of claim 1, wherein the method further comprises:

when the terminal equipment searches a non-cell-defined SSB at a frequency position corresponding to at least one of the plurality of synchronous grids, the terminal equipment acquires a frequency offset between a Global Synchronization Channel Number (GSCN) where the cell-defined SSB is located and a GSCN where the non-cell-defined SSB is located according to an MIB in the non-cell-defined SSB;

and the terminal equipment determines the GSCN where the cell definition SSB is located according to the frequency offset, and searches the GSCN where the cell definition SSB is located.
The method of claim 4, wherein the method further comprises:

and the terminal equipment acquires control information for receiving SIB1 according to the MIB in the cell definition SSB, and receives SIB1 according to the control information.
The method of claim 2 or 5, wherein the control information comprises a control resource set CORESET #0 and a search space #0.
The method of any of claims 1 to 6, wherein the frequency locations at which non-cell-defining SSBs are transmitted are the same relative to the frequency offset values of the cell-defining SSBs for different satellite beams.
The method according to any one of claims 1 to 7,

at least one SSB corresponding to one satellite beam is transmitted on one synchronization grid and SSBs corresponding to different satellite beams are transmitted on different synchronization grids.
A method of wireless communication, comprising:

the network device transmits the synchronization signal block SSB at frequency positions corresponding to a plurality of synchronization grids, where the plurality of synchronization grids correspond to SSBs of different satellite beams, respectively, or the plurality of synchronization grids correspond to different satellite beams, respectively.
The method of claim 9, wherein the SSB comprises a cell-defining SSB.
The method of claim 10, wherein the cell definition SSBs transmitted on the frequency locations corresponding to the plurality of synchronization grids correspond to the same cell.
The method according to claim 10 or 11, wherein a master information block, MIB, in the cell-defined SSB is used for terminal devices to acquire control information for receiving system information blocks, SIB1, in an initial access procedure.
The method of claim 12, wherein the control information comprises a control resource set CORESET #0 and a search space #0.
The method of any of claims 9 to 13, wherein the SSBs comprise non-cell-defining SSBs.
The method of claim 14, wherein the frequency locations at which the network device transmits non-cell-defining SSBs are the same relative to the frequency offset values of the cell-defining SSBs for different satellite beams.
The method of any one of claims 9 to 15,

at least one SSB corresponding to one satellite beam is transmitted on one synchronization grid and SSBs corresponding to different satellite beams are transmitted on different synchronization grids.
A method of wireless communication, comprising:

the terminal equipment receives physical downlink control information PDCCH which is sent by the network equipment in a frequency hopping mode and used for indicating the transmission of a system information block SIB1.
The method of claim 17, wherein the frequency hopping pattern comprises:

in one SIB1 repetition period, in the process of transmitting a PDCCH indicating SIB1 transmission while traversing each synchronization signal block SSB beam direction, PDCCHs in different SSB beam directions are transmitted on different frequency resource locations.
The method of claim 18, wherein the terminal device receives a PDCCH sent by a network device in a frequency hopping manner for indicating SIB1 transmission, comprising:

the terminal equipment tries to receive a PDCCH for indicating SIB1 transmission on PDCCH time-frequency resources corresponding to a plurality of SSB beams traversed by the network equipment; alternatively, the first and second electrodes may be,

the terminal device attempts to receive a PDCCH for indicating SIB1 transmission on a PDCCH time-frequency resource corresponding to one of SSB beams traversed by the network device.
The method of any one of claims 17 to 19,

the PDCCH for instructing transmission of SIB1 hops within a frequency range corresponding to the control resource set CORESET #0.
The method of any one of claims 17 to 19,

the PDCCH for indicating SIB1 transmission is transmitted in a frequency range corresponding to CORESET #0, and the CORESET #0 corresponds to different frequency ranges in different time periods.
The method according to any of claims 17 to 21, wherein the frequency hopping pattern is pre-configured or protocol agreed and/or the frequency hopping interval is pre-configured or protocol agreed. .
The method of any one of claims 17 to 22,

the PDCCH for indicating SIB1 transmission is transmitted by the network device according to a first correspondence,

the first correspondence is a correspondence between an SSB beam index corresponding to the PDCCH and a time window, and the network device transmits the PDCCH in a frequency resource range corresponding to a corresponding SSB beam index in a time window.
The method of claim 23,

the frequency resource range corresponding to the SSB wave beam 1 is pre-configured or agreed by a protocol, the frequency resource range corresponding to the SSB wave beam n is determined according to the frequency resource range corresponding to the SSB wave beam n-1 and the frequency hopping interval, n is greater than or equal to 2, and n is an integer.
The method of claim 23,

the frequency resource range corresponding to the SSB beam index is pre-configured or protocol agreed.
The method according to any of claims 23 to 25, wherein the first correspondence is pre-configured or agreed upon by a protocol.
A method of wireless communication, comprising:

the network equipment adopts a frequency hopping mode to send physical downlink control information PDCCH for indicating the transmission of a system information block SIB1.
The method of claim 27, wherein the frequency hopping pattern comprises:

in one SIB1 repetition period, in the process of transmitting a PDCCH indicating SIB1 transmission while traversing each synchronization signal block SSB beam direction, PDCCHs in different SSB beam directions are transmitted on different frequency resource locations.
The method of claim 27 or 28,

the PDCCH for instructing transmission of SIB1 hops within a frequency range corresponding to the control resource set CORESET #0.
The method of claim 27 or 28,

the PDCCH for indicating SIB1 transmission is transmitted in a frequency range corresponding to core set #0, and the core set #0 corresponds to different frequency ranges in different time periods.
The method according to any of claims 27 to 30, wherein the frequency hopping pattern is pre-configured or protocol agreed and/or the frequency hopping interval is pre-configured or protocol agreed.
The method of any one of claims 27 to 31, wherein the network device transmits the PDCCH indicating SIB1 transmission in a frequency hopping manner, comprising:

the network device transmits a PDCCH for indicating SIB1 transmission in a frequency hopping manner according to the first correspondence, wherein,

the first correspondence is a correspondence between an SSB beam index corresponding to the PDCCH and a time window, and the network device transmits the PDCCH in a frequency resource range corresponding to a corresponding SSB beam index in a time window.
The method of claim 32,

the frequency resource range corresponding to the SSB wave beam 1 is pre-configured or agreed by a protocol, the frequency resource range corresponding to the SSB wave beam n is determined according to the frequency resource range corresponding to the SSB wave beam n-1 and the frequency hopping interval, n is greater than or equal to 2, and n is an integer.
The method of claim 32,

the frequency resource range corresponding to the SSB beam index is pre-configured or protocol agreed.
The method according to any of the claims 32 to 34, wherein the first correspondence is pre-configured or agreed upon by a protocol.
A terminal device, comprising:

a communication unit, configured to search for a synchronization signal block SSB at a frequency location corresponding to a plurality of synchronization grids, where the plurality of synchronization grids respectively correspond to SSBs of different satellite beams for transmission, or the plurality of synchronization grids respectively correspond to different satellite beams.
The terminal device of claim 36, wherein the terminal device further comprises: a processing unit for processing the received data,

when the terminal device searches for a cell definition SSB in a frequency location corresponding to at least one of the plurality of synchronization grids, the processing unit is configured to obtain control information for receiving a system information block SIB1 according to a master information block MIB in the cell definition SSB, and the communication unit is further configured to receive the SIB1 according to the control information.
The terminal device of claim 37, wherein the cell definition SSBs transmitted at the frequency locations corresponding to the plurality of synchronization grids correspond to the same cell.
The terminal device of claim 36, wherein the terminal device further comprises: a processing unit for processing the received data,

when the terminal device searches for a non-cell-defined SSB at a frequency position corresponding to at least one of the plurality of synchronization grids, the processing unit is configured to obtain, according to the MIB in the non-cell-defined SSB, a frequency offset between a global synchronization channel number GSCN where the cell-defined SSB is located and a GSCN where the non-cell-defined SSB is located;

the processing unit is further configured to determine, according to the frequency offset, a GSCN on which the cell-defining SSB is located, and the communication unit is further configured to search for the cell-defining SSB on the GSCN on which the cell-defining SSB is located.
The terminal device of claim 39,

the processing unit is further configured to acquire control information for receiving SIB1 according to the MIB in the cell definition SSB, and the communication unit is further configured to receive SIB1 according to the control information.
The terminal device of claim 37 or 40, wherein the control information comprises a control resource set CORESET #0 and a search space #0.
A terminal device according to any of claims 36 to 41, wherein the frequency locations at which non-cell-defining SSBs are transmitted are the same relative to the frequency offset values of the cell-defining SSBs for different satellite beams.
The terminal device according to any of claims 36 to 42,

at least one SSB corresponding to one satellite beam is transmitted on one synchronization grid and SSBs corresponding to different satellite beams are transmitted on different synchronization grids.
A network device, comprising:

a communication unit, configured to transmit a synchronization signal block SSB at a frequency location corresponding to a plurality of synchronization grids, where the plurality of synchronization grids correspond to SSBs of different satellite beams, respectively, or the plurality of synchronization grids correspond to different satellite beams, respectively.
The network device of claim 44, wherein the SSB comprises a cell definition SSB.
The network device of claim 45, wherein the cell-defining SSBs sent on the frequency locations corresponding to the multiple synchronization grids correspond to the same cell.
Network device according to claim 45 or 46, wherein the Master information Block MIB in the cell definition SSB is used for the terminal device to acquire control information for receiving System information Block SIB1 in an initial access procedure.
The network device of claim 47, wherein the control information comprises a control resource set CORESET #0 and a search space #0.
The network device of any one of claims 44 to 48, wherein the SSBs comprise non-cell-defining SSBs.
The network device of claim 49, wherein the frequency locations at which the network device transmits non-cell-defining SSBs are the same relative to frequency offset values for cell-defining SSBs for different satellite beams.
The network device of any one of claims 44 to 50,

at least one SSB corresponding to one satellite beam is transmitted on one synchronization grid and SSBs corresponding to different satellite beams are transmitted on different synchronization grids.
A terminal device, comprising:

a communication unit, configured to receive physical downlink control information PDCCH, sent by a network device in a frequency hopping manner and used for indicating transmission of a system information block SIB1.
The terminal device of claim 52, wherein the frequency hopping pattern comprises:

in one SIB1 repetition period, in the process of transmitting a PDCCH indicating SIB1 transmission while traversing each synchronization signal block SSB beam direction, PDCCHs in different SSB beam directions are transmitted on different frequency resource locations.
The terminal device of claim 53, wherein the communication unit is specifically configured to:

attempting to receive a PDCCH for indicating SIB1 transmission on PDCCH time-frequency resources corresponding to a plurality of SSB beams traversed by the network device; alternatively, the first and second electrodes may be,

attempting to receive a PDCCH indicating SIB1 transmission on a PDCCH time-frequency resource corresponding to one of SSB beams traversed by the network device.
The terminal device of any one of claims 52 to 54,

the PDCCH for instructing transmission of SIB1 hops within a frequency range corresponding to the control resource set CORESET #0.
The terminal device of any one of claims 52 to 54,

the PDCCH for indicating SIB1 transmission is transmitted in a frequency range corresponding to core set #0, and the core set #0 corresponds to different frequency ranges in different time periods.
The terminal device according to one of claims 52 to 56, wherein the frequency hopping pattern is pre-configured or protocol agreed and/or the frequency hopping interval is pre-configured or protocol agreed. .
The terminal device of any one of claims 52 to 57,

the PDCCH for indicating SIB1 transmission is transmitted by the network device according to a first correspondence,

the first correspondence is a correspondence between an SSB beam index corresponding to the PDCCH and a time window, and the network device transmits the PDCCH in a frequency resource range corresponding to a corresponding SSB beam index in a time window.
The terminal device of claim 58,

the frequency resource range corresponding to the SSB wave beam 1 is pre-configured or agreed by a protocol, the frequency resource range corresponding to the SSB wave beam n is determined according to the frequency resource range corresponding to the SSB wave beam n-1 and the frequency hopping interval, n is greater than or equal to 2, and n is an integer.
The terminal device of claim 58,

the frequency resource range corresponding to the SSB beam index is pre-configured or protocol agreed.
A terminal device according to any one of claims 58 to 60, wherein said first correspondence is pre-configured or protocol agreed.
A network device, comprising:

a communication unit, configured to send, in a frequency hopping manner, physical downlink control information PDCCH indicating transmission of a system information block SIB1.
The network device of claim 62, wherein the frequency hopping pattern comprises:

in one SIB1 repetition period, in the process of transmitting a PDCCH indicating SIB1 transmission while traversing each synchronization signal block SSB beam direction, PDCCHs in different SSB beam directions are transmitted on different frequency resource locations.
The network device of claim 62 or 63,

the PDCCH for instructing transmission of SIB1 hops within a frequency range corresponding to the control resource set CORESET #0.
The network device of claim 62 or 63,

the PDCCH for indicating SIB1 transmission is transmitted in a frequency range corresponding to CORESET #0, and the CORESET #0 corresponds to different frequency ranges in different time periods.
The network device of any of claims 62 to 65, wherein the frequency hopping pattern is pre-configured or protocol agreed and/or the frequency hopping interval is pre-configured or protocol agreed.
The network device of any one of claims 62 to 66, wherein the communication unit is specifically configured to:

and transmitting a PDCCH for indicating SIB1 transmission in a frequency hopping manner according to the first correspondence relationship, wherein,

the first correspondence is a correspondence between an SSB beam index corresponding to the PDCCH and a time window, and the network device transmits the PDCCH in a frequency resource range corresponding to a corresponding SSB beam index in a time window.
The network device of claim 67,

the frequency resource range corresponding to the SSB wave beam 1 is pre-configured or agreed by a protocol, the frequency resource range corresponding to the SSB wave beam n is determined according to the frequency resource range corresponding to the SSB wave beam n-1 and the frequency hopping interval, n is greater than or equal to 2, and n is an integer.
The network device of claim 68,

the frequency resource range corresponding to the SSB beam index is pre-configured or protocol agreed.
A network device as claimed in any one of claims 62 to 69, wherein the first correspondence is pre-configured or agreed upon by a protocol.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 8.
A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 9 to 16.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 17 to 26.
A network device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory to perform the method of any of claims 27 to 35.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 8.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 9 to 16.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 17 to 26.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 27 to 35.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 8.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 9 to 16.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 17 to 26.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 27 to 35.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 8.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 9 to 16.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 17 to 26.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 27 to 35.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1 to 8.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 9 to 16.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 17-26.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 27-35.