WO2022021225A1 - Wireless communication method, terminal device, and network device - Google Patents

Abstract

Embodiments of the present application provide a wireless communication method, a terminal device, and a network device. In a frequency reuse deployment scenario of adjacent satellite beams in an NTN, for the transmission of MIBs and SIBs, same frequency interference between different SSBs can be effectively reduced by introducing SSB frequency-hopping transmission, such that initial access performance of a terminal device is improved. The wireless communication method comprises: a terminal device searches for an SSB at frequency positions corresponding to multiple synchronization rasters, wherein the multiple synchronization rasters respectively correspond to SSB transmission of different satellite beams, or the multiple synchronization rasters respectively correspond to different satellite beams.

Description

Wireless communication method, terminal device and network device technical field

The embodiments of the present application relate to the field of communication, and more particularly, to a wireless communication method, terminal device, and network device.

Background technique

The fifth-generation mobile communication technology 5-Generation New Radio (5G NR) system defines the deployment scenarios of non-terrestrial networks (NTN) systems including satellite networks. The NTN system can realize the continuity of 5G NR services. In order to reduce co-channel interference between different satellite beams, different frequency points/carriers/frequency bands can be used for adjacent satellite beams during network deployment. For the transmission of the Master Information Block (MIB) and the System Information Block (SIB), the beam directions of each Synchronization Signal Block (SSB) are traversed at the same frequency position for repeated transmission. . How to avoid co-channel interference between different SSB beams is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a wireless communication method, terminal equipment, and network equipment. In the deployment scenario of adjacent satellite beam frequency reuse in NTN, corresponding to the transmission of MIB and SIB, by introducing SSB frequency hopping transmission, the frequency hopping transmission can be effectively reduced. Co-channel interference between different SSBs improves the initial access performance of terminal equipment.

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

The terminal device searches for SSBs at frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple 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 SSB at frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids respectively correspond to different satellite beams .

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

The terminal device receives the PDCCH sent by the network device in a frequency hopping manner and used to indicate the transmission of SIB1.

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

The network device transmits the PDCCH for indicating the transmission of SIB1 in a frequency hopping manner.

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

Specifically, the terminal device includes functional modules for executing the method in the first aspect.

In a sixth aspect, a network device is provided for executing the method in the second aspect.

Specifically, the network device includes functional modules for executing the method in the second aspect above.

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

Specifically, the terminal device includes functional modules for executing the method in the third aspect.

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

Specifically, the network device includes functional modules for executing the method in the fourth aspect above.

In a ninth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.

In a tenth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect.

In an eleventh aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the third aspect.

A twelfth aspect provides a network device including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the fourth aspect.

A thirteenth aspect provides an apparatus for implementing the method in any one of the above-mentioned first to fourth aspects.

Specifically, the apparatus includes: a processor for invoking and running a computer program from a memory, so that a device on which the apparatus is installed executes the method in any one of the first to fourth aspects above.

A fourteenth aspect provides a computer-readable storage medium for storing a computer program, the computer program causing a computer to perform the method in any one of the above-mentioned first to fourth aspects.

A fifteenth aspect provides a computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of the above-mentioned first to fourth aspects.

A sixteenth aspect provides a computer program which, when run on a computer, causes the computer to perform the method of any one of the above-mentioned first to fourth aspects.

Through the technical solutions of the first aspect and the second aspect, the network device transmits the SSB at different frequency positions, that is, the network device transmits the SSB by frequency hopping, which can effectively reduce the co-channel interference between different SSBs and improve the initial connection of the terminal device. into performance.

Through the technical solutions of the third aspect and the fourth aspect, the network equipment adopts the frequency hopping method to send the PDCCH used to indicate the transmission of SIB1. By introducing the PDCCH frequency hopping transmission, the same-frequency interference between different SSBs can be effectively reduced, and the terminal can be improved. The initial access performance of the device.

Description of 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 a satellite beam provided by the present application.

FIG. 3 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

FIG. 4 is a schematic diagram of sending an SSB according to an embodiment of the present application.

FIG. 5 is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application.

FIG. 6 is a schematic diagram of sending a PDCCH for indicating SIB1 transmission according to an embodiment of the present application.

FIG. 7 is another schematic diagram of sending a PDCCH for indicating SIB1 transmission according to an embodiment of the present application.

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 according to 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 according to 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

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. With regard to the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.

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; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

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 (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment or base station (gNB) in the PLMN network or the network equipment in the future evolved PLMN network or the network equipment in the NTN network, etc.

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Exemplarily, a communication system 100 to which this embodiment of the present application is applied 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). The network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.

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

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system 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 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. ; The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.

The 5G NR system defines the deployment scenarios of NTN systems including satellite networks. NTN generally uses satellite communication to provide communication services to terrestrial users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages. First of all, satellite communication is not limited by the user's geographical area. For example, general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or cannot be covered due to sparse population. For satellite communication, due to a single Satellites can cover a large ground, and satellites can orbit around the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value. Satellite communications can be covered at low cost in remote mountainous areas and poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technologies, which is conducive to narrowing the digital divide with developed regions and promoting development in these areas. Thirdly, the satellite communication distance is long, and the communication cost does not increase significantly when the communication distance increases; 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, Geostationary Earth Orbit (GEO) satellites, and highly elliptical orbits according to different orbital altitudes. (High Elliptical Orbit, HEO) satellites, etc.

For example, the altitude range of LEO satellites is 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite viewing time is 20 minutes. The signal propagation distance is short, the link loss is small, and the transmit power requirements of the user terminal are not high.

For another example, the orbital altitude of the GEO satellite is 35786km, and the rotation period around the earth is 24 hours. The signal propagation delay of single-hop communication between users is generally 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 uses multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover dozens of diameters. to hundreds of kilometers of ground.

A satellite beam is the smallest unit that a satellite covers the earth's surface, corresponding to different directions. Usually, a satellite covers the earth's surface through hundreds or thousands of satellite beams. These satellite beams can be deployed as different cells or within the same cell. Considering the possible co-channel interference between adjacent satellite beams, a frequency reuse factor greater than 1 is generally considered, that is, adjacent satellite beams are distinguished by different frequency points/carriers/frequency bands, as shown in Figure 3, Satellite beams with the same pattern use the same frequency point/carrier/band.

It should be understood that in this embodiment of the present application, NR can also be deployed independently. In the 5G network environment, in order to reduce air interface signaling, quickly restore wireless connections, and quickly restore data services, a new Radio Resource Control (Radio Resource Control) is defined. , RRC) state, namely RRC_INACTIVE (inactive) state. This state is different from the RRC_IDLE (idle) and RRC_CONNECTED (connected) states.

In the RRC_IDLE state: mobility is based on terminal device cell selection and reselection, paging is initiated by the Core Network (CN), and the paging area is configured by the CN. There is no terminal device access layer (Access Stratum, AS) context on the base station side, nor does an RRC connection exist.

In the RRC_CONNECTED state: there is an RRC connection, and the base station and the terminal device have the terminal device AS context. The network equipment knows the location of the terminal equipment at the specific cell level. Mobility is the mobility of network device control. Unicast data can be transmitted between the terminal equipment and the base station.

RRC_INACTIVE: Mobility is based on terminal device cell selection and reselection, there is a connection between CN-NR, terminal device AS context exists on a certain base station, paging is triggered by Radio Access Network (RAN), based on The paging area of the RAN is managed by the RAN, and the network equipment knows the location of the terminal device based on the level of the paging area 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 the initial access terminal in the NR system, cell search should be performed first after entering the network. The main purpose of cell search is to discover cells. Since the UE generally lacks prior knowledge of the actual deployment of the cell, during the cell search process, the UE needs to scan the frequency range of the potential cell to determine the cell location, Then obtain cell information and attempt to initiate cell access.

A sync grid is a series of frequency bins that can be used to send a sync signal. During network deployment, a cell needs to be established, and the cell needs to have a specific synchronization signal. The configurable position of the synchronization signal corresponds to the synchronization grid position. For example, point A in the frequency domain is a frequency point in a synchronization grid. When an operator deploys a cell near point A, the center of the cell's synchronization signal can be configured at point A. When the UE is on frequency A When searching for a cell in the frequency band where the point is located, the cell can be found through the synchronization signal on point A, thereby accessing the cell.

In the NR system, the SSB can be used for the initial access of the UE, and can also be configured as a measurement reference signal for the UE for measurement. The former is used for UE access cells, and its frequency domain location is on the synchronization grid and is associated with SIB1 information; the latter is not associated with SIB1 information, even if its frequency domain location is also on the synchronization grid, it cannot be used for UE access. into the community. The former is called a cell-defining SSB (Cell-Defining SSB), and the latter is called a non-cell-defining SSB (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 initial access UE, when searching for SSBs according to the synchronization grid, two types of SSBs may be searched. When the non-cell-defined SSB is searched, since the SSB is not associated with SIB1 information, the UE cannot pass through the SSB. The MIB information carried by the physical layer broadcast channel (Physical Broadcast Channel, PBCH) obtains the control information for receiving SIB1, and the UE must continue to search for the cell to define the SSB access cell. The base station may carry an indication message in the non-cell-defined SSB to indicate the frequency between the global synchronization channel number (GSCN) where the cell-defined SSB is located and the GSCN where the currently searched non-cell-defined SSB is located. offset. In this way, even if the UE detects a non-cell-defined SSB, it can determine the GSCN where the cell-defined SSB is located by using the indication information carried in the SSB. The UE can directly search for the cell-defined SSB at the pointed target GSCN position based on the auxiliary information, thereby avoiding the blind search of the cell-defined SSB by the UE, and reducing the time delay and power consumption of the cell search. The GSCN offset information is indicated by the information carried by the PBCH.

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

Based on the MIB indication, the UE monitors the PDCCH that schedules the PDSCH carrying the SIB1 on the search space #0, so as to obtain the SIB1 information.

It should be noted that, in order to reduce co-channel interference between different satellite beams, adjacent satellite beams may use different frequency points/carriers/frequency bands. A satellite beam usually contains one or more SSB beams. For the transmission of MIB and SIB, all SSB beam directions are traversed at the same frequency position for repeated transmission. In this 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, this application proposes a frequency hopping scheme. In the deployment scenario of adjacent satellite beam frequency reuse in NTN, by introducing MIB frequency hopping transmission and SIB frequency hopping transmission, the same frequency between different SSBs can be effectively reduced interference, and improve the initial access performance of the terminal device.

The technical solutions of the present application are described in detail below through specific embodiments.

FIG. 3 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 3 , the method 200 may include at least part of the following contents:

S210, the network device transmits SSB at frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids respectively correspond to different satellite beams ;

S220, the terminal device searches for the SSB at the frequency positions corresponding to the multiple synchronization grids.

Optionally, the embodiments of the present application are applied to a deployment scenario of adjacent satellite beam frequency reuse in the NTN. In addition, the embodiments of the present application are applied to an initial access process of a terminal device. Of course, it can also be applied to some other scenarios, which is not limited in this application.

It should be understood that a synchronization grid is a series of frequency points that can be used to transmit synchronization signals. For details, reference may be made to the above description about the synchronization grid, which will not be repeated here.

In this embodiment of the present application, the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids respectively correspond to different satellite beams. In this case, at least one satellite beam corresponds to at least one One SSB 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 SSB at different frequency positions, that is, the network device sends the SSB by frequency hopping, which can effectively reduce the co-channel interference between different SSBs and improve the initial access performance of the terminal device. .

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

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

It should be noted that the terminal device can define the SSB to access the cell through the cell.

Optionally, the cell-defined SSBs sent at the frequency positions corresponding to the multiple synchronization grids correspond to the same cell. That is, the network device transmits cell-defined SSBs for the same cell at frequency positions corresponding to the multiple synchronization grids, where the multiple synchronization grids correspond to the transmission of cell-defined SSBs of different satellite beams. In this case, the cell-defined SSB sent by the network device at a frequency position corresponding to a synchronization grid corresponds to at least one SSB beam included in a satellite beam.

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

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

Therefore, in this embodiment of the present application, due to the SSB frequency hopping transmission, that is, the MIB frequency hopping transmission in the SSB. In addition, when the network device is configured to receive the control information of the SIB1, the SIB1 may also be configured for frequency hopping transmission. That is to say, the embodiments of the present application can introduce MIB frequency hopping transmission and SIB frequency hopping transmission, which can effectively reduce the co-channel interference between different SSBs and improve the initial access performance of the terminal device.

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

It should be noted that, for the non-cell-defined SSB sent at the frequency position corresponding to the synchronization grid, the network device sends the non-cell-defined SSB at the frequency position corresponding to multiple synchronization grids, and the multiple synchronization grids correspond to different The non-cell of the satellite beam defines the transmission of the SSB. In this case, the non-cell-defined SSB sent by the network device at a frequency position corresponding to a synchronization grid corresponds to at least one SSB beam included in a satellite beam.

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

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

Optionally, in some embodiments of the present application, for different satellite beams, the frequency position for transmitting the non-cell-defined SSB is the same as the frequency offset value of the cell-defined SSB. For example, as shown in Figure 4, the network device sends the non-cell definition SSB1 at the frequency position corresponding to the synchronization grid 6 through the satellite beam 1, and the MIB in the non-cell definition SSB1 indicates the GSCN where the cell definition SSB1 is located and the non-cell definition SSB1 is located. The frequency offset (offset) between the GSCNs is 6 synchronization grids, that is, the network device sends the cell definition SSB1 at the frequency position corresponding to the synchronization grid 12; the network device transmits the frequency corresponding to the synchronization grid 5 through the satellite beam 2. The non-cell-defining SSB2 is sent at the location, and 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 equipment. The cell definition SSB2 is sent at the frequency position corresponding to the synchronization grid 11; the network device sends the non-cell definition SSB3 at the frequency position corresponding to the synchronization grid 4 through the satellite beam 3. The MIB in the non-cell definition SSB3 indicates the location of the cell definition SSB3. The frequency offset (offset) between the GSCN and the GSCN where the non-cell-defined SSB3 is located is also 6 synchronization grids, that is, the network device sends the cell-defined SSB3 at the frequency position corresponding to the synchronization grid 10; the network device transmits the cell-defined SSB3 through the satellite beam 4 The non-cell-defined SSB4 is sent at the frequency position corresponding to synchronization grid 3, and the MIB in the non-cell-defined SSB4 indicates that the frequency offset (offset) between the GSCN where the cell-defined SSB4 is located and the GSCN where the non-cell-defined SSB4 is located is also 6 A synchronization grid, that is, the network device sends the cell definition SSB4 at the frequency position corresponding to the synchronization grid 9 .

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

FIG. 5 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG. 5 , the method 300 may include at least part of the following contents:

S310, the network device transmits the PDCCH for indicating the transmission of SIB1 in a frequency hopping manner;

S320, the terminal device receives the PDCCH sent by the network device in a frequency hopping manner and used to indicate the transmission of the SIB1.

Optionally, the embodiments of the present application are applied to a deployment scenario of adjacent satellite beam frequency reuse in the NTN. In addition, the embodiments of the present application are applied to an initial access process of a terminal device. Of course, it can also be applied to some other scenarios, which is not limited in this application.

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

In one SIB1 repetition period, in the process of traversing each SSB beam direction for transmission of the PDCCH used to instruct the SIB1 transmission, the PDCCH in different SSB beam directions are sent at different frequency resource positions.

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

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

In this embodiment of the present application, within one SIB1 repetition period, in the process of traversing each SSB beam direction for transmission of the PDCCH used to indicate SIB1 transmission, the PDCCH in different SSB beam directions are sent at different frequency resource positions, and also That is to say, in the embodiment of the present application, the network device transmits the PDCCH at different frequency positions, that is, the network device uses different frequency positions to transmit the PDCCH by frequency hopping during the process of traversing each SSB beam direction for transmission, which can effectively reduce the number of different SSBs. The co-channel interference between them can improve the initial access performance of the terminal equipment.

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

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

Optionally, in some embodiments, the PDCCH used to instruct SIB1 transmission is frequency hopping within the frequency range corresponding to CORESET#0. As shown in Figure 6, in one SIB1 repetition period, the PDCCH used to instruct SIB1 to traverse the directions of SSB beam 1, SSB beam 2, SSB beam 3 and SSB beam 4 within the frequency range corresponding to CORESET#0 for transmission. During the process, PDCCHs of different SSB beam directions are sent on different frequency resource positions within the frequency range corresponding to CORESET#0. In addition, for other PDCCH transmissions in the SIB1 repetition period, the frequency hopping transmission modes are similar, and details are not described here.

Optionally, in other embodiments, the PDCCH used to instruct SIB1 transmission is transmitted in a frequency range corresponding to CORESET#0, where CORESET#0 corresponds to different frequency ranges in different time periods. As shown in Figure 7, CORESET#0 corresponds to different frequency ranges in different time periods. In one SIB1 repetition period, the PDCCH used to instruct SIB1 to traverse SSB beam 1 and SSB beam within the frequency range corresponding to CORESET#0 2. During transmission in the directions of SSB beam 3 and SSB beam 4, PDCCHs in different SSB beam directions are transmitted at different frequency resource positions within the frequency range corresponding to CORESET #0. In addition, for other PDCCH transmissions in the SIB1 repetition period, the frequency hopping transmission modes are similar, and details are not described here.

Optionally, in this embodiment of the present application, the network device may use a frequency hopping manner to send the PDCCH for indicating SIB1 transmission according to a first correspondence relationship, where the first correspondence relationship is the SSB beam index and time corresponding to sending the PDCCH. The corresponding relationship of the window, and the network device transmits the PDCCH within a frequency resource range corresponding to a corresponding SSB beam index within a time window.

Optionally, the frequency resource range corresponding to SSB beam 1 is pre-configured or agreed in the agreement, and the frequency resource range corresponding to SSB beam n is determined according to the frequency resource range and frequency hopping interval corresponding to SSB beam n-1, n≥2, and n is an integer.

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

Optionally, the first corresponding relationship is pre-configured or agreed in an agreement.

Therefore, in the embodiment of the present application, in the deployment scenario of adjacent satellite beam frequency reuse in the NTN, corresponding to the transmission of MIB and SIB, the network device adopts the PDCCH sent by frequency hopping to indicate the transmission of SIB1. By introducing the PDCCH Frequency hopping transmission with SSB can effectively reduce the co-channel interference between different SSBs and improve the initial access performance of terminal equipment.

The method embodiments of the present application are described in detail above with reference to FIGS. 3 to 7 , and the apparatus embodiments of the present application are described in detail below with reference to FIGS. 8 to 14 . It should be understood that the apparatus embodiments and the method embodiments correspond to each other, and are similar to For the description, refer to the method embodiment.

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

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

Optionally, the terminal device 400 further includes: a processing unit 420,

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

Optionally, the cell-defined SSBs sent at the frequency positions corresponding to the multiple synchronization grids correspond to the same cell.

Optionally, the terminal device 400 further includes: a processing unit 420,

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

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

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

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

Optionally, for different satellite beams, the frequency position for transmitting the non-cell-defined SSB relative to the frequency offset value of the cell-defined SSB is the same.

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 above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip. The aforementioned 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 the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are respectively for realizing the method shown in FIG. 3 . The corresponding process of the terminal device in 200 is not repeated here for brevity.

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

The communication unit 410 is configured to send synchronization signal blocks SSB at frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids are respectively Corresponding to different satellite beams.

Optionally, the SSB includes a cell-defining SSB.

Optionally, the cell-defined SSBs sent at the frequency positions corresponding to the multiple synchronization grids correspond to the same cell.

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

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

Optionally, the SSB includes a non-cell-defined SSB.

Optionally, for different satellite beams, the frequency position at which the network device transmits the non-cell-defined SSB is the same as the frequency offset value of the cell-defined SSB.

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 above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-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 method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 500 are for realizing the method shown in FIG. 3 respectively. The corresponding process of the network device in 200 is not repeated here for brevity.

FIG. 10 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application. As shown in Figure 10, the terminal device 600 includes:

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

Optionally, the frequency hopping manner includes:

In one SIB1 repetition period, in the process of traversing the SSB beam directions of each synchronization signal block to transmit the PDCCH used to indicate the SIB1 transmission, the PDCCHs in different SSB beam directions are sent at different frequency resource positions.

Optionally, the communication unit 610 is specifically used for:

Attempt to receive the PDCCH indicating SIB1 transmission on the PDCCH time-frequency resources corresponding to multiple SSB beams in the SSB beams traversed by the network device; or,

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

Optionally, the PDCCH used to instruct the SIB1 to transmit is frequency hopping within the frequency range corresponding to the control resource set CORESET#0.

Optionally, the PDCCH used to indicate the transmission of the SIB1 is transmitted in the frequency range corresponding to CORESET#0, and the CORESET#0 corresponds to different frequency ranges in different time periods.

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

Optionally, the PDCCH used to instruct SIB1 transmission is sent by the network device according to the first correspondence,

The first correspondence is a correspondence between an SSB beam index corresponding to the sending PDCCH and a time window, and the network device sends the PDCCH within a frequency resource range corresponding to a corresponding SSB beam index within a time window.

Optionally, the frequency resource range corresponding to SSB beam 1 is pre-configured or agreed in the agreement, and the frequency resource range corresponding to SSB beam n is determined according to the frequency resource range and frequency hopping interval corresponding to SSB beam n-1, n≥2, and n is an integer.

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

Optionally, the first corresponding relationship is pre-configured or agreed in an agreement.

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

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 method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 600 are respectively for realizing the method shown in FIG. 5 . The corresponding process of the terminal device in 300 is not repeated here 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 Figure 11, the network device 700 includes:

The communication unit 710 is configured to send the physical downlink control information PDCCH for indicating the transmission of the system information block SIB1 in a frequency hopping manner.

Optionally, the frequency hopping manner includes:

In one SIB1 repetition period, in the process of traversing the SSB beam directions of each synchronization signal block to transmit the PDCCH used to indicate the SIB1 transmission, the PDCCHs in different SSB beam directions are sent at different frequency resource positions.

Optionally, the PDCCH used to instruct the SIB1 to transmit is frequency hopping within the frequency range corresponding to the control resource set CORESET#0.

Optionally, the PDCCH used to indicate the transmission of the SIB1 is transmitted in the frequency range corresponding to CORESET#0, and the CORESET#0 corresponds to different frequency ranges in different time periods.

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

Optionally, the communication unit 710 is specifically used for:

According to the first correspondence, the PDCCH for indicating the transmission of SIB1 is sent in a frequency hopping manner, wherein,

The first correspondence is a correspondence between an SSB beam index corresponding to the sending PDCCH and a time window, and the network device sends the PDCCH within a frequency resource range corresponding to a corresponding SSB beam index within a time window.

Optionally, the frequency resource range corresponding to SSB beam 1 is pre-configured or agreed in the agreement, and the frequency resource range corresponding to SSB beam n is determined according to the frequency resource range and frequency hopping interval corresponding to SSB beam n-1, n≥2, and n is an integer.

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

Optionally, the first corresponding relationship is pre-configured or agreed in an agreement.

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

It should be understood that the network device 700 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 700 are respectively for realizing the method shown in FIG. 5 . The corresponding process of the network device in 300 is not repeated here for brevity.

FIG. 12 is a schematic structural diagram of a communication device 800 provided by an embodiment of the present application. The communication device 800 shown in FIG. 12 includes a processor 810, and the processor 810 can call and run a computer program from a memory, so as 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 . The processor 810 may call and run a computer program from the memory 820 to implement the methods in the embodiments of the present application.

The memory 820 may be a separate device independent of the processor 810 , or may be integrated in 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, specifically, may send information or data to other devices, or receive other Information or data sent by a device.

Among them, the transceiver 830 may include a transmitter and a receiver. The transceiver 830 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 800 may specifically be the network device in this embodiment of the present application, and the communication device 800 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For brevity, details are not repeated here. .

Optionally, the communication device 800 may specifically be the mobile terminal/terminal device in the embodiments of the present application, and the communication device 800 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiments of the present application. , and will not be repeated here.

FIG. 13 is a schematic structural 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, so as 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 . The processor 910 may call and run a computer program from the memory 920 to implement the methods in the embodiments of the present application.

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

Optionally, the apparatus 900 may further include an input interface 930 . The processor 910 may control the input interface 930 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

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

Optionally, the apparatus can be applied to the network equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application, which are not repeated here for brevity.

Optionally, the apparatus can be applied to the mobile terminal/terminal equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the mobile terminal/terminal equipment in each method of the embodiments of the present application. For brevity, here No longer.

Optionally, the device mentioned in the embodiment of the present application may also be a chip. For example, it can be a system-on-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.

FIG. 14 is a schematic block diagram of a communication system 1000 provided by 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 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1020 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. 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 conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and are not repeated here for brevity.

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

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.

The embodiments of the present application also provide a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

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

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

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (90)

1. A wireless communication method, comprising:

   The terminal device searches for the synchronization signal block SSB at the frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids respectively correspond to different SSB transmissions. satellite beam.
2. The method of claim 1, wherein the method further comprises:

   When the terminal device searches for a cell-defined SSB at a frequency position corresponding to at least one synchronization grid among the plurality of synchronization grids, the terminal device obtains the main information block MIB according to the cell-defined SSB for The control information of the system information block SIB1 is received, and the terminal device receives the SIB1 according to the control information.
3. The method of claim 2, wherein the cell-defined SSBs sent at the frequency positions corresponding to the multiple synchronization grids correspond to the same cell.
4. The method of claim 1, wherein the method further comprises:

   When the terminal device searches for a non-cell-defined SSB at a frequency position corresponding to at least one synchronization grid among the plurality of synchronization grids, the terminal device acquires the cell-defined SSB according to the MIB in the non-cell-defined SSB The frequency offset between the global synchronization channel number GSCN where it is located and the GSCN where the non-cell-defined SSB is located;

   The terminal device determines the GSCN where the cell-defined SSB is located according to the frequency offset, and searches for the cell-defined SSB on the GSCN where the cell-defined SSB is located.
5. The method of claim 4, wherein the method further comprises:

   The terminal device acquires control information for receiving SIB1 according to the MIB in the cell-defining SSB, and the terminal device receives SIB1 according to the control information.
6. The method of claim 2 or 5, wherein the control information includes a control resource set CORESET #0 and a search space #0.
7. The method according to any one of claims 1 to 6, wherein, for different satellite beams, the frequency position for transmitting the non-cell-defined SSB is the same as the frequency offset value of the cell-defined SSB.
8. The method of any one of claims 1 to 7, wherein,

   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.
9. A wireless communication method, comprising:

   The network device sends synchronization signal blocks SSB at frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids respectively correspond to different SSB transmissions satellite beam.
10. 10. The method of claim 9, wherein the SSB comprises a cell-defining SSB.
11. The method of claim 10, wherein the cell-defined SSBs sent at the frequency positions corresponding to the multiple synchronization grids correspond to the same cell.
12. The method according to claim 10 or 11, wherein the master information block MIB in the cell definition SSB is used by the terminal equipment to obtain control information for receiving the system information block SIB1 during an initial access process.
13. 13. The method of claim 12, wherein the control information includes a control resource set CORESET #0 and a search space #0.
14. The method of any one of claims 9 to 13, wherein the SSB comprises a non-cell-defined SSB.
15. The method according to claim 14, wherein, for different satellite beams, the frequency position at which the network device transmits the non-cell-defined SSB relative to the frequency offset value of the cell-defined SSB is the same.
16. The method of any one of claims 9 to 15, wherein,

    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.
17. A wireless communication method, comprising:

    The terminal device receives the physical downlink control information PDCCH sent by the network device in a frequency hopping manner and used to indicate the transmission of the system information block SIB1.
18. The method of claim 17, wherein the frequency hopping manner comprises:

    In one SIB1 repetition period, in the process of traversing each synchronization signal block SSB beam direction for sending the PDCCH used to instruct SIB1 transmission, the PDCCH in different SSB beam directions are sent at different frequency resource positions.
19. The method according to claim 18, wherein the terminal device receives the PDCCH sent by the network device in a frequency hopping manner and used to indicate SIB1 transmission, comprising:

    The terminal device attempts to receive, on the PDCCH time-frequency resources corresponding to multiple SSB beams in the SSB beams traversed by the network device, the PDCCH used to indicate the transmission of SIB1; or,

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

    The PDCCH used to indicate the transmission of SIB1 is frequency hopping within the frequency range corresponding to the control resource set CORESET#0.
21. The method of any one of claims 17 to 19, wherein,

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

    The PDCCH used to indicate SIB1 transmission is sent by the network device according to the first correspondence,

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

    The frequency resource range corresponding to SSB beam 1 is pre-configured or agreed in the protocol, and the frequency resource range corresponding to SSB beam n is determined according to the frequency resource range and frequency hopping interval corresponding to SSB beam n-1, n≥2, and n is an integer .
25. The method of claim 23, wherein

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

    The network device transmits the physical downlink control information PDCCH for instructing the transmission of the system information block SIB1 in a frequency hopping manner.
28. The method of claim 27, wherein the frequency hopping manner comprises:

    In one SIB1 repetition period, in the process of traversing the SSB beam directions of each synchronization signal block to transmit the PDCCH used to indicate the SIB1 transmission, the PDCCHs in different SSB beam directions are sent at different frequency resource positions.
29. The method of claim 27 or 28, wherein,

    The PDCCH used to indicate the transmission of SIB1 is frequency hopping within the frequency range corresponding to the control resource set CORESET#0.
30. The method of claim 27 or 28, wherein,

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

    The network device sends the 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 sending PDCCH and a time window, and the network device sends the PDCCH within a frequency resource range corresponding to a corresponding SSB beam index within a time window.
33. The method of claim 32, wherein:

    The frequency resource range corresponding to SSB beam 1 is pre-configured or agreed in the protocol, and the frequency resource range corresponding to SSB beam n is determined according to the frequency resource range and frequency hopping interval corresponding to SSB beam n-1, n≥2, and n is an integer .
34. The method of claim 32, wherein:

    The frequency resource range corresponding to the SSB beam index is pre-configured or agreed in the protocol.
35. The method according to any one of claims 32 to 34, wherein the first correspondence is pre-configured or agreed in a protocol.
36. A terminal device, characterized in that it includes:

    a communication unit, configured to search for synchronization signal blocks SSB at frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids Corresponding to different satellite beams respectively.
37. The terminal device according to claim 36, wherein the terminal device further comprises: a processing unit,

    When the terminal device searches for a cell-defined SSB at a frequency position corresponding to at least one synchronization grid in the plurality of synchronization grids, the processing unit is configured to obtain the master information block MIB according to the cell-defined SSB. for receiving the control information of the system information block SIB1, and the communication unit is further configured to receive the SIB1 according to the control information.
38. The terminal device according to claim 37, wherein the cell-defined SSBs sent at the frequency positions corresponding to the multiple synchronization grids correspond to the same cell.
39. The terminal device according to claim 36, wherein the terminal device further comprises: a processing unit,

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

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

    The processing unit is further configured to acquire control information for receiving the SIB1 according to the MIB in the cell definition SSB, and the communication unit is further configured to receive the SIB1 according to the control information.
41. The terminal device according to claim 37 or 40, wherein the control information includes a control resource set CORESET #0 and a search space #0.
42. The terminal device according to any one of claims 36 to 41, characterized in that, for different satellite beams, the frequency position for transmitting the non-cell-defined SSB relative to the frequency offset value of the cell-defined SSB is the same.
43. The terminal device according to any one of claims 36 to 42, wherein,

    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.
44. A network device, characterized in that it includes:

    a communication unit, configured to send synchronization signal blocks SSB at frequency positions corresponding to multiple synchronization grids, wherein the multiple synchronization grids respectively correspond to the SSB transmission of different satellite beams, or the multiple synchronization grids Corresponding to different satellite beams respectively.
45. 45. The network device of claim 44, wherein the SSB comprises a cell-defining SSB.
46. The network device according to claim 45, wherein the cell-defined SSBs sent at the frequency positions corresponding to the multiple synchronization grids correspond to the same cell.
47. The network device according to claim 45 or 46, wherein the master information block MIB in the cell definition SSB is used by the terminal device to obtain control information for receiving the system information block SIB1 during an initial access process.
48. 48. The network device of claim 47, wherein the control information includes a control resource set CORESET #0 and a search space #0.
49. The network device of any one of claims 44 to 48, wherein the SSB comprises a non-cell-defined SSB.
50. 49. The network device of claim 49, wherein, for different satellite beams, the frequency position at which the network device transmits the non-cell-defined SSB relative to the frequency offset value of the cell-defined SSB is the same.
51. The network device according to any one of claims 44 to 50, wherein,

    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.
52. A terminal device, characterized in that it includes:

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

    In one SIB1 repetition period, in the process of traversing the SSB beam directions of each synchronization signal block to transmit the PDCCH used to indicate the SIB1 transmission, the PDCCHs in different SSB beam directions are sent at different frequency resource positions.
54. The terminal device according to claim 53, wherein the communication unit is specifically used for:

    Attempt to receive the PDCCH indicating the transmission of SIB1 on the PDCCH time-frequency resources corresponding to multiple SSB beams in the SSB beams traversed by the network device; or,

    Attempting 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.
55. The terminal device according to any one of claims 52 to 54, wherein,

    The PDCCH used to indicate the transmission of SIB1 is frequency hopping within the frequency range corresponding to the control resource set CORESET#0.
56. The terminal device according to any one of claims 52 to 54, wherein,

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

    The PDCCH used to indicate SIB1 transmission is sent by the network device according to the first correspondence,

    The first correspondence is a correspondence between an SSB beam index corresponding to the sending PDCCH and a time window, and the network device sends the PDCCH within a frequency resource range corresponding to a corresponding SSB beam index within a time window.
59. The terminal device of claim 58, wherein:

    The frequency resource range corresponding to SSB beam 1 is pre-configured or agreed in the protocol, and the frequency resource range corresponding to SSB beam n is determined according to the frequency resource range and frequency hopping interval corresponding to SSB beam n-1, n≥2, and n is an integer .
60. The terminal device of claim 58, wherein:

    The frequency resource range corresponding to the SSB beam index is pre-configured or agreed in the protocol.
61. The terminal device according to any one of claims 58 to 60, wherein the first correspondence is pre-configured or agreed in a protocol.
62. A network device, characterized in that it includes:

    The communication unit is used for sending the physical downlink control information PDCCH used for indicating the transmission of the system information block SIB1 in a frequency hopping manner.
63. The network device of claim 62, wherein the frequency hopping manner comprises:

    In one SIB1 repetition period, in the process of traversing the SSB beam directions of each synchronization signal block to transmit the PDCCH used to indicate the SIB1 transmission, the PDCCHs in different SSB beam directions are sent at different frequency resource positions.
64. The network device of claim 62 or 63, wherein,

    The PDCCH used to indicate the transmission of SIB1 is frequency hopping within the frequency range corresponding to the control resource set CORESET#0.
65. The network device of claim 62 or 63, wherein,

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

    According to the first correspondence, the PDCCH for indicating the transmission of SIB1 is sent in a frequency hopping manner, wherein,

    The first correspondence is a correspondence between an SSB beam index corresponding to the sending PDCCH and a time window, and the network device sends the PDCCH within a frequency resource range corresponding to a corresponding SSB beam index within a time window.
68. The network device of claim 67, wherein,

    The frequency resource range corresponding to SSB beam 1 is pre-configured or agreed in the protocol, and the frequency resource range corresponding to SSB beam n is determined according to the frequency resource range and frequency hopping interval corresponding to SSB beam n-1, n≥2, and n is an integer .
69. The network device of claim 68, wherein,

    The frequency resource range corresponding to the SSB beam index is pre-configured or agreed in the protocol.
70. The network device according to any one of claims 62 to 69, wherein the first correspondence is pre-configured or agreed in a protocol.
71. A terminal device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 8. one of the methods described.
72. A network device is characterized in that, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 9 to 16. one of the methods described.
73. A terminal device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 17 to 26. one of the methods described.
74. A network device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 27 to 35. one of the methods described.
75. A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 8.
76. A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 9 to 16 .
77. A chip, characterized by comprising: a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 17 to 26 .
78. A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 27 to 35.
79. A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 8.
80. A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 9 to 16.
81. A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 17 to 26.
82. A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 27 to 35.
83. A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 8.
84. A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 9 to 16.
85. A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 17 to 26.
86. A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 27 to 35.
87. A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 8.
88. A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 9 to 16.
89. A computer program, characterized in that the computer program causes a computer to perform the method as claimed in any one of claims 17 to 26.
90. A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 27 to 35.

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