CN109803370B - Indication method, network equipment and user equipment - Google Patents

Abstract

The application provides an indication method, network equipment and user equipment, which combine the indication of a synchronization signal block for a first purpose with the indication of a synchronization signal block actually transmitted by a network, namely, the synchronization signal block for the first purpose is indicated on the basis of indication information of the synchronization signal block actually transmitted, so that the signaling expenditure and the network burden are reduced on the basis of ensuring certain flexibility, the transmission efficiency is improved, and the energy consumption is saved.

Description

Instruction methods, network equipment and user equipment

Technical field

The present application relates to the field of communications, and more specifically, to instruction methods, network equipment and user equipment.

Background technique

Wireless communication technology has experienced rapid development in the past few decades, and has successively experienced the first-generation wireless communication system based on analog communication systems, and the 2G wireless communication system represented by the Global System for Mobile Communication (GSM). , 3G wireless communication systems represented by Wideband Code Division Multiple Access (WCDMA), and now Long Term Evolution (LTE) 4G wireless communication systems that have been widely commercialized around the world and achieved great success. . The services supported by wireless communication systems have also evolved from the initial voice and text messages to now supporting wireless high-speed data communications. At the same time, the number of wireless connections around the world is experiencing continuous rapid growth, and various new wireless business types are also emerging, such as the Internet of Things, autonomous driving, etc., all of which have a great impact on the next generation wireless communication system, namely 5G. system, putting forward higher requirements. In order to support the multi-beam characteristics of next-generation networks such as 5G, a synchronization signal block is introduced. Its successful reception is a prerequisite for the user equipment (User Equipment, UE) to successfully access the network. At the same time, the synchronization signal block is also used by the UE for other purposes. Such as wireless channel monitoring, auxiliary random access or interference signal measurement and other fields. However, in the above-mentioned fields, the existing technology generally uses a full-bit map method to indicate the above-mentioned purposes, and this indication method requires a long bit sequence for indication, often requiring 64 bits, so the signaling overhead is very large.

Contents of the invention

This application provides an indication method, network equipment and user equipment, which combines the indication of the synchronization signal block used for the first purpose with the indication of the synchronization signal block actually sent by the network, that is, the indication of the synchronization signal block actually sent by the network The information is based on an indication of the synchronization signal block used for the first purpose. Since the number of synchronization signal blocks actually sent is less than the number of synchronization signal blocks that the system may send, indicating the synchronization signal blocks actually sent can reduce the number of bits used for indication, thereby reducing indication signaling while ensuring a certain degree of flexibility. overhead and network burden, while improving transmission efficiency and saving energy consumption. Wherein, the first purpose includes at least one of the following purposes, wireless channel monitoring, assisted random access, beam management and interference signal measurement.

The first aspect provides an indication method. The method includes: user equipment UE receives first indication information sent by a network device, where the first indication information includes indication information of an actually sent synchronization signal block; the UE receives the The second indication information sent by the network device, the second indication information includes the indication information of the synchronization signal block for the first purpose; the UE obtains the synchronization signal block for the first purpose according to the first indication information and the second indication information. First purpose synchronization signal block.

The second aspect provides an indication method. The method includes: a network device sends first indication information to a user equipment UE, where the first indication information includes indication information of an actually sent synchronization signal block; the network device performs the following steps according to the first indication information: The indication information generates second indication information, where the second indication information includes indication information of the synchronization signal block for the first purpose; the network device sends the second indication information to the UE.

A third aspect provides a user equipment UE, where the UE includes: a receiving unit configured to receive first indication information sent by a network device, where the first indication information includes indication information of an actually sent synchronization signal block; the receiving unit A unit further configured to receive second indication information sent by the network device, the second indication information including indication information of the synchronization signal block for the first purpose; a processing unit configured to receive the second indication information according to the first indication information and The second indication information obtains the synchronization signal block used for the first purpose.

The fourth aspect provides a user equipment UE, the UE includes: a processor, a memory and a transceiver; the memory stores a program, and when the program is executed by the processor, the transceiver receives the information sent by the network device. First indication information, the first indication information includes indication information of the synchronization signal block actually sent; the transceiver receives the second indication information sent by the network device, the second indication information includes information for the first purpose indication information of the synchronization signal block; the processor obtains the synchronization signal block for the first purpose according to the first indication information and the second indication information.

The fifth aspect provides a network device, characterized in that the network device includes: a sending unit configured to send first indication information to the user equipment UE, where the first indication information includes indication information of the synchronization signal block actually sent. ; The processing unit is configured to generate second indication information according to the actually sent synchronization signal block, the second indication information includes the indication information of the synchronization signal block for the first purpose; the sending unit is also configured to send to the UE the second indication information.

A sixth aspect provides a network device, characterized in that the network device includes: a processor, a memory, a receiver and a transmitter; the memory stores a program, and when the program is executed by the processor, the The transmitter sends first indication information to the user equipment UE, where the first indication information includes indication information of the synchronization signal block actually sent; the processor generates second indication information according to the first indication information, and the second indication information The indication information includes indication information for the synchronization signal block for the first purpose; the transmitter sends the second indication information to the UE.

Wherein, the network device and/or UE may be called a communication device.

In a possible implementation of any one of the first to sixth aspects, the second indication information indicates at least one of the following information: a synchronization signal block group for the first purpose, in which the synchronization signal block group The synchronization signal block used for the first purpose, the synchronization signal block actually sent is the synchronization signal block used for the first purpose.

In a possible implementation of any one of the first to sixth aspects, when the second indication information indicates a synchronization signal block group for the first purpose, all synchronization signals actually sent in the synchronization signal block group are The signal block is used for the first purpose.

In a possible implementation manner of any one of the first to sixth aspects, the second indication information indicates that the synchronization signal blocks in the synchronization signal block group used for the first purpose specifically include: the second indication The information indicates X actually transmitted synchronization signal blocks used for the first purpose in the synchronization signal block group, where X is a positive integer greater than or equal to 1.

In a possible implementation of any one of the first to sixth aspects, the X synchronization signal blocks actually sent for the first purpose in the synchronization signal block group include the synchronization signal blocks used for the first purpose in the synchronization signal group The first X synchronization signal blocks actually sent for the purpose or the last X synchronization signal blocks actually sent for the first purpose in the synchronization signal group.

In a possible implementation manner of any one of the first to sixth aspects, the second indication indicates that the synchronization signal block used for the first purpose among the actually sent synchronization signal blocks includes: the second indication The information indicates X actually transmitted synchronization signal blocks used for the first purpose among the actually transmitted synchronization signal blocks, where X is a positive integer greater than or equal to 1.

In a possible implementation of any one of the first to sixth aspects, the X actually transmitted synchronization signal blocks for the first purpose include X consecutive actually transmitted synchronization signals for the first purpose. piece.

In a possible implementation of any one of the first to sixth aspects, the second indication information also indicates the first or the last of the X actually transmitted synchronization signal blocks used for the first purpose. Sync signal block.

In a possible implementation manner of any one of the first to sixth aspects, the synchronization signal block group used for the first purpose is indicated by an index or a bit map.

In a possible implementation manner of any one of the first to sixth aspects, the synchronization signal blocks used for the first purpose in the synchronization signal block group are indicated by a bit map.

In a possible implementation manner of any one of the first to sixth aspects, the synchronization signal blocks used for the first purpose among the actually transmitted synchronization signal blocks are indicated by a bit map.

In a possible implementation manner of any one of the first to sixth aspects, the first synchronization signal block is indicated by an index.

In a possible implementation manner of any of the first to sixth aspects, the last synchronization signal block is indicated by an index

In a seventh aspect, a computer-readable storage medium is provided. The computer-readable storage medium includes instructions that, when run on a computer, cause the computer to perform the method described in the first aspect and/or the second aspect.

An eighth aspect provides a program product, which includes instructions that, when run on a computer, cause the computer to execute the method described in the first aspect and/or the second aspect.

In a ninth aspect, a chip is provided. The chip includes: at least one circuit, the circuit is used to perform the method described in the first aspect and/or the second aspect.

In a tenth aspect, a chip is provided. The chip includes: a processor and a memory. The memory stores instructions executed by the processor. The instructions include the method described in the first aspect and/or the second aspect. .

Description of the drawings

Figure 1 is a schematic structural diagram of a system according to an embodiment of the present invention;

Figure 2 is a schematic diagram of another network architecture to which this application can be applied;

Figure 3 is a schematic diagram of a possible structure of a synchronization signal block;

Figure 4 is a schematic diagram of the position of the synchronization signal block in the 5 millisecond transmission time window;

Figure 5 is a schematic flow chart of the instruction method of this application;

Figure 6 is a schematic diagram of a synchronization signal block used for the first purpose in this application;

Figure 7 is another schematic diagram of the synchronization signal block used for the first purpose in this application;

Figure 8 is another schematic diagram of the synchronization signal block used for the first purpose in this application;

Figure 9 is another schematic diagram of a synchronization signal block used for the first purpose in this application;

Figure 10 is another schematic diagram of the synchronization signal block used for the first purpose in this application;

Figure 11 is another schematic diagram of the synchronization signal block used for the first purpose in this application;

Figure 12 is another schematic diagram of the synchronization signal block used for the first purpose in this application;

Figure 13 is a schematic structural diagram of the network equipment provided by this application;

Figure 14 is a schematic structural diagram of another network device provided by this application;

Figure 15 is a schematic diagram of the UE structure provided by this application;

Figure 16 is a schematic structural diagram of another UE provided by this application;

Figure 17 is a schematic structural diagram of the device 100 provided by this application;

Figure 18 is another schematic flowchart of the method indicated in this application.

Detailed ways

The terminology used in this application is for the sole purpose of describing particular possible implementations and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. As used in this application, the term "and/or" refers to and includes one or more of the associated listed items or all possible combinations. As used in this application, the term "comprising" specifies the presence of stated features, data, information, integers, steps, operations, elements and/or parts without excluding one or more other features, data, information, integers, The presence or addition of steps, operations, elements, parts and/or groups thereof. The term "instruction" as used in this application may include "explicit indication" and/or "implicit indication". The order of the steps in this application can be freely arranged. This application does not limit this; even if there are steps marked with serial numbers, the serial numbers are only used to simplify the description. In practice, they may not be executed in the order of the serial numbers, but may also be executed at the same time.

First, some terms used in this application are explained to facilitate understanding by those skilled in the art.

1). The network device can be any device with wireless transceiver function. Including but not limited to: network equipment (for example, network equipment NodeB, evolved network equipment eNodeB, network equipment (gNB) in the fifth generation (5G) communication system, network equipment or network equipment in future communication systems , access nodes, wireless relay nodes, wireless backhaul nodes) in WiFi systems, etc. The network device may also be a wireless controller in a cloud radioaccess network (cloud radioaccess network, CRAN) scenario. The network device can also be a network device in a 5G network or a network device in a future evolution network; it can also be a wearable device or a vehicle-mounted device, etc. Network equipment can also be small stations, transmission nodes (transmission reference points, TRPs), etc. Of course, the application is not limited to this. 2) A base station, also known as base station equipment, is a device deployed in a wireless access network to provide wireless communication functions. The names of base stations may be different in different wireless access systems. For example, in the Universal Mobile Telecommunications System (UMTS) network, the base station is called NodeB (NodeB), and in the LTE network, the base station is called NodeB. An evolved NodeB (eNB or eNodeB for short) can be called a Transmission Reception Point (TRP) network node or a g-NodeB (gNB) in the future 5G system.

2) User equipment (UE) is a device with wireless transceiver functions that can interact with network equipment. It can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water. (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons, satellites, etc.). The UE may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) UE device, an augmented reality (Augmented Reality, AR) UE device, or an industrial control (industrial) device. Wireless UE in control, wireless UE in self-driving, wireless UE in remote medical, wireless UE in smart grid, wireless UE in transportation safety UE, wireless UE in smart city (smart city), wireless UE in smart home (smart home), etc. The embodiments of this application do not limit application scenarios. A UE may be a device capable of communicating with network devices. The UE may also be sometimes referred to as terminal equipment, access terminal equipment, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, wireless communication equipment, UE agent or terminal device, etc.

3) Synchronization Sigal Block (SSB) is a signal structure suitable for 5G and later communication systems. The synchronization signal block may also be called synchronization signal/physical broadcast channel block (SS/PBCHblock), or may have other names, which is not limited in this application. The synchronization signal block generally includes a primary synchronization signal (Primary Synchronization Sigal, PSS), a secondary synchronization signal (Secondary Synchronization Signal, SSS), and a physical broadcast channel (Physical Broadcast Channel, PBCH). For example, Figure 3 is a schematic diagram of a possible structure of a synchronization signal block. The main function of PSS and SSS is to help UE identify the cell and synchronize with the cell. PBCH contains the most basic system information such as system frame number, intra-frame timing information, etc. The UE's successful reception of the synchronization signal block is a prerequisite for its access to the cell.

4). The nouns "network" and "system" are often used interchangeably or simultaneously, but those skilled in the art can understand their meanings. Information, signal, message, and channel can sometimes be used interchangeably. It should be noted that when the difference is not emphasized, the meanings they convey are the same. "Of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be noted that when the difference is not emphasized, the meanings they convey are consistent.

The technical solutions in this application will be described below with reference to the accompanying drawings.

Figure 1 is a schematic diagram of a system applied in this application. As shown in Figure 1, the system 100 may include a network device 102 and UEs 104, 106, 108, 110, 112 and 114, where the network device and the terminal device are connected through wireless connections. It should be understood that FIG. 1 only takes the system including one network device as an example for illustration, but the application is not limited thereto. For example, the system may also include more network devices; similarly, the system may also include more UEs. It should also be understood that the system may also be called a network, or a network system, and this application is not limited to this.

Figure 2 is a schematic diagram of another network architecture to which the present application can be applied. The schematic network architecture diagram may be a network architecture diagram of NR in the next generation wireless communication system. In this network architecture schematic diagram, network equipment can be divided into a centralized unit (Centralized Unit, CU) and multiple transmission reception points (Transmission Reception Point, TRP)/distributed unit (Distributed Unit, DU), that is, network equipment The BandwidthBased Unit (BBU) is reconstructed into DU and CU functional entities. It should be noted that the form and quantity of centralized units and TRP/DU do not constitute limitations to this application. Although the shapes of the corresponding centralized units of network device 1 and network device 2 shown in Figure 2 are different, this does not affect their respective functions. It can be understood that centralized unit 1 and the TRP/DU within the dotted line range are components of network equipment 1, centralized unit 2 and the TRP/DU within the solid line range are components of network equipment 2, and network equipment 1 and Network device 2 is a network device (or base station) involved in the NR system. CU can handle high-level wireless protocol stack functions, such as Radio Resource Control (RRC) layer, Packet Data Convergence Protocol (PDCP) layer, etc., and can even support some core network functions to be transferred to the interface. Network access, termed as edge computing network, can meet the higher network latency requirements of future communication networks for emerging services such as video, online shopping, and virtual/augmented reality. DU can mainly handle physical layer functions and layer 2 functions with high real-time requirements. Considering the transmission resources of the Radio Remote Unit (RRU) and DU, some of the physical layer functions of DU can be moved up to the RRU. RRU miniaturization, even more radical DU can be merged with RRU. CU can be deployed in a centralized manner. DU deployment depends on the actual network environment. Core urban areas have high traffic density, small station spacing, and limited computer room resources, such as universities and large performance venues. DU can also be deployed in a centralized manner. In areas where traffic is sparse and stations are widely spaced, such as suburban counties and mountainous areas, DU can be deployed in a distributed manner. The S1-C interface illustrated in Figure 2 can be a standard interface between the network device and the core network. The specific equipment connected to S1-C is not shown in Figure 2 .

Network device 102, network device 1 or network device 2 sends a synchronization signal block to the UE to enable the UE to access the network. The following uses the 5G network as an example to introduce the process of sending synchronization signal blocks. It should be understood that there are other ways to send synchronization signal blocks in the corresponding network. In order to support the multi-beam characteristics of the 5G network, a synchronization signal burst set (burstset) is defined. The synchronization signal burst set contains one or more synchronization signal blocks, and the network device can send these synchronization signal blocks through different beams to achieve beam scanning. In different frequency ranges, the maximum number L of synchronization signal blocks that a synchronization signal burst set can contain is different. Specifically, when the frequency does not exceed 3GHz, L=4; when the frequency is between 3GHz and 6GHz, L=8; when the frequency is between 6GHz and 52.6GHz, L=64. The network device will periodically send synchronization signal blocks, and the synchronization signal burst set contains at most L synchronization signal blocks (the actual synchronization signal blocks sent can be less than L) need to be sent within a 5 millisecond time window. Figure 4 is a schematic diagram of the position of the synchronization signal block in the 5 millisecond transmission time window. As shown in Figure 4, the positions of the aforementioned L synchronization signal blocks within the 5 millisecond time window under different subcarrier spaces (Subcarrier Space, SCS) are given.

In order to facilitate rate matching for the UE, the network device will indicate the actual synchronization signal block sent through indication information. For example, the indication information can be included in the remaining minimum system information (Remaining Minimum System Information, RMSI) or in the radio resource control. (Radio Resource Control, RRC) signaling. Specifically, the indication information in the RMSI is indicated by the bit map of the synchronization signal block group and the bit map of the synchronization signal block within the synchronization signal block group, that is, grouping L synchronization signal blocks and then indicating the actual transmitted synchronization. The synchronization signal block actually sent in the signal block group and the synchronization signal block group actually sent; RRC signaling indicates the synchronization signal block actually sent through a bit map of length L. This instruction information is called first instruction information. In this application, the UE obtains the synchronization signal block for the first purpose by combining the first indication information with the second indication information. Among them, the first purpose includes any purpose that needs to be realized based on processing (including receiving, transmitting, measuring or managing, etc.) the actually sent synchronization signal block. For example, the first purpose may include: wireless channel monitoring, assisted random access, beam management or interference signal measurement, etc.

Among them, the UE needs to perform wireless link monitoring after accessing the network to determine whether the current link can operate normally. If the current link does not work properly, the UE can try random access to re-access the network. In order to implement wireless link monitoring (the first purpose), the UE needs to measure certain specific reference signals, such as measuring the reference signal included in the actually transmitted synchronization signal block. Therefore, the network device configures the synchronization signal block for wireless link monitoring for the UE. The UE performs radio channel monitoring on designated synchronization signal blocks according to the instruction message of the network device, and those synchronization signal blocks that are not instructed do not need to be monitored. This indication message may be called a second indication message. It can be understood that the synchronization signal block indicated by the second indication message is at least one synchronization signal block or all synchronization signal blocks actually sent by the network device. Therefore, the UE can use the synchronization signal used for wireless channel monitoring. The indication of the block (second indication information) is combined with the indication of the actually sent synchronization signal block (first indication information) to obtain the synchronization signal block used for wireless channel monitoring.

Interference signal measurement, interference signal power is an important indicator reflecting link quality, and is also an important reference quantity for network equipment to perform resource scheduling. The network equipment will configure the synchronization signal block for interference signal power measurement for the user. The user measures the interference signal power of the adjacent cell on the indicated synchronization signal block according to the configuration of the network equipment, and then feeds the measurement results back to the network equipment. In order to implement interference signal measurement, the UE needs to measure the actually transmitted synchronization signal block. Therefore, the network device configures the synchronization signal block for interference signal measurement for the UE. The UE measures the specified synchronization signal blocks according to the instruction message of the network device, and those synchronization signal blocks that are not instructed do not need to be measured. This indication message may be called a second indication message. It can be understood that the synchronization signal block indicated by the second indication message is at least one synchronization signal block or all synchronization signal blocks actually sent by the network device. Therefore, the UE can use the synchronization signal used for interference signal measurement. The indication of the block (second indication information) is combined with the indication of the actually transmitted synchronization signal block (first indication information) to obtain the synchronization signal block used for interference signal measurement.

Beam management, in a high-frequency communication scenario, the network device will configure a synchronization signal block for beam management for the user, and indicate it with the second indication information. Users will receive synchronization signal blocks in different beam directions sent by network equipment, and also adjust their own receiving beams. Through beam management, network equipment and users determine their own optimal transmitting and receiving beams, thereby improving high-frequency transmission quality. It can be understood that the synchronization signal block indicated by the second indication message is at least one synchronization signal block or all synchronization signal blocks actually sent by the network device. Therefore, the UE can use the synchronization signal block used for beam management. The indication (second indication information) is combined with the indication (first indication information) of the actually transmitted synchronization signal block to obtain the synchronization signal block used for beam management.

The technical solution of the present application will be introduced below with reference to the accompanying drawings.

Figure 5 is a schematic flowchart of the instruction method of this application. As shown in Figure 5: S501 The user equipment UE receives the first indication information sent by the network device. S502 The UE receives the second indication information sent by the network device, where the second indication information includes the indication information of the synchronization signal block for the first purpose. It should be understood that S501 and S502 are executed in no sequence and can also be executed at the same time. S503 The UE obtains the synchronization signal block for the first purpose according to the first indication information and the second indication information.

Figure 18 is another schematic flowchart of the method indicated in this application. As shown in Figure 18, S1801, the network device sends first indication information to the user equipment UE, where the first indication information includes indication information of the actually sent synchronization signal block. S1802 The network device generates second indication information, where the second indication information includes indication information for the synchronization signal block for the first purpose. S1801 and S1802 are executed in no sequence and can also be executed at the same time. S1803 The network device sends the second indication information to the UE.

The first indication information includes indication information of synchronization signal blocks actually sent in the network. For example, the UE may obtain the indication information of the actually sent synchronization signal block through RMSI or RRC signaling.

The second indication information may be sent through one piece of signaling (such as RMSI or RRC signaling) or through multiple pieces of signaling. Wherein, the second indication information may indicate a synchronization signal block group used for the first purpose; or indicate a synchronization signal block group used for the first purpose, and the synchronization signal block group used for the first purpose in the synchronization signal block group. ; Or indicate the synchronization signal block used for the first purpose among the actually transmitted synchronization signal blocks. The second indication information indicates a synchronization signal block group used for the first purpose, then all actually sent synchronization signal blocks in the group are used for the first purpose. The second indication information indicates the synchronization signal block used for the first purpose in the synchronization signal block group or the synchronization signal block used for the first purpose among the synchronization signal blocks actually sent. It can directly indicate which synchronization signal block or blocks are used for the first purpose; it can also indicate the number X of synchronization signal blocks used for the first purpose, and indicate whether the X synchronization signal blocks are continuous or non-continuous, or Which is the first sync signal or the last sync signal block. The second indication information may be indicated through a bitmap or index, or any other method that can solve the technical problem of the present application.

The above indication method reduces the signaling overhead and network burden of sending indication information while ensuring a certain degree of flexibility, while improving transmission efficiency and saving energy consumption.

Several possible solutions in this application are introduced below with reference to the accompanying drawings.

Optional solution one: the UE obtains the indication information of the actually sent synchronization signal block through RMSI signaling, that is, the first indication information. According to the first indication information, the UE obtains which group the actually sent synchronization signal block belongs to and its position within the group. At this time, the second indication information includes two parts, one part is used to indicate the index of the synchronization signal block group used for the first purpose; the other part is used to indicate through the bit map that the previously indicated synchronization signal block group is used for the first purpose. synchronization signal block. For example, FIG. 6 is a schematic diagram of a synchronization signal block used for the first purpose in this application. As shown in Figure 6, when the synchronization signal burst set contains at most L=64 synchronization signal blocks and is divided into 8 groups, and the network device actually sends 16 synchronization signal blocks, the network device instructs the UE to use the synchronization signal block for the first purpose. The synchronization signal blocks are the first two actually transmitted synchronization signal blocks in the synchronization signal block group 2. Therefore, the network device can instruct the UE to use the synchronization signal block for the first purpose by indicating 001 and 11000000, where 001 represents the synchronization signal block group index (i.e., synchronization signal block group 2 in Figure 6, where 000 to 111 respectively correspond to index 1 ~8), 11000000 is a bit map to indicate the first two synchronization signal blocks in synchronization signal block group 2. Through the above indication method, the signaling overhead of the network device indicating the synchronization signal block is bits, where M is the number of synchronization signal block groups. Instead of using the above indication method, the signaling overhead is L bits. For example, when L=64 and M=8, 64 bits are required without using the above indication method, but only 11 bits are required using the above method. Therefore, by redesigning the indication signaling of the synchronization signal block for the first purpose, the signaling overhead is greatly reduced.

Optional solution two: The UE obtains the indication information of the actually sent synchronization signal block through RMSI signaling, that is, the first indication information. According to the first indication information, the UE obtains which group the actually sent synchronization signal block belongs to and its position within the group. At this time, the second indication information includes two parts, one part is used to indicate the index of the synchronization signal block group used for the first purpose; the other part is used to indicate that the X synchronization signal blocks in the aforementioned synchronization signal block group are used for the first purpose. Purpose synchronization signal block. For example, the first X synchronization signal blocks for the first purpose and/or the last X synchronization signal blocks for the first purpose may be indicated. Wherein, the X synchronization signal blocks are the first X or the last X synchronization signal blocks among the synchronization signal blocks actually sent in the indicated synchronization signal block group. For example, FIG. 7 is another schematic diagram of a synchronization signal block used for the first purpose in this application. As shown in Figure 7: When the synchronization signal blocks used for the first purpose are the first three actually sent in the first synchronization signal block group. The network device can indicate via 000 and 010, where 000 represents synchronization signal block group 1, and 010 represents the first three actually sent synchronization signal blocks (000 to 111 correspond to the first 1 to 8 respectively). When the synchronization signal block used for the first purpose is the last synchronization signal block actually sent in the second synchronization signal block group. The network device can indicate via 001 and 000, where 001 represents synchronization signal block group 2, and 000 represents the last actually sent synchronization signal block (000 to 111 correspond to the last 1 to 8 blocks respectively). Through the above indication method, the signaling overhead of the network device indicating the synchronization signal block is bits, where M is the number of synchronization signal block groups. Instead of using the above indication method, the signaling overhead is L bits. For example, when L=64 and M=8, 64 bits are required without using the above indication method, but only 6 bits are required by using the above method. Therefore, by redesigning the indication signaling of the synchronization signal block for the first purpose, the signaling overhead is greatly reduced.

Optional solution three: the UE obtains the indication information of the actually sent synchronization signal block through RMSI signaling, that is, the first indication information. According to the first indication information, the UE obtains which group the actually sent synchronization signal block belongs to and its position within the group. At this time, the second indication information includes two parts. One part indicates the synchronization signal block group used for the first purpose through a bit map; the other part further indicates the synchronization signal block used for the first purpose within the group through another bit map. For example, FIG. 8 is another schematic diagram of a synchronization signal block used for the first purpose in this application. As shown in Figure 8: the synchronization signal blocks used for the first purpose are two synchronization signal blocks in the synchronization signal block group 1 and two synchronization signal blocks in the synchronization signal block group 2. The network device can use 11000000 to indicate synchronization signal block groups 1 and 2, and then use 10000001 to indicate the synchronization signal block used for the first purpose in the group. Through the above indication method, the signaling overhead of the network device indicating the synchronization signal block is bits, where M is the number of synchronization signal block groups. Instead of using the above indication method, the signaling overhead is L bits. For example, when L=64 and M=8, 64 bits are required without using the above indication method, but only 16 bits are required by using the above method. Therefore, by redesigning the indication signaling of the synchronization signal block for the first purpose, the signaling overhead is greatly reduced. In addition, compared with the case of using an index to indicate a synchronization signal block group, although using a bit map to indicate a synchronization signal block group requires a relatively larger number of bits, the use of a bit map can greatly enhance the flexibility of the indication. , for example, multiple synchronization signal block groups can be indicated at one time, and multiple synchronization signal blocks at any position can be indicated at one time.

Optional solution 4: The UE obtains the indication information of the actually sent synchronization signal block through RMSI signaling, that is, the first indication information. According to the first indication information, the UE obtains which group the actually sent synchronization signal block belongs to and its position within the group. At this time, the second indication information includes two parts. One part indicates the synchronization signal block group used for the first purpose through the bit map; the other part indicates that the X synchronization signal blocks in the aforementioned synchronization signal block group are used for the first purpose. signal block. For example, it may be indicated that the first X and/or the last X synchronization signal blocks are synchronization signal blocks for the first purpose. Wherein, the first X synchronization signal blocks are the first X synchronization signal blocks among the synchronization signal blocks actually sent in the indicated synchronization signal block group; the last The last X synchronization signal blocks among the synchronization signal blocks. For example, FIG. 9 is another schematic diagram of a synchronization signal block used for the first purpose in this application. As shown in Figure 9: the synchronization signal blocks used for the first purpose are the first two synchronization signal blocks in the synchronization signal block group 1 and the first two synchronization signal blocks in the synchronization signal block group 8. The network device can be indicated by 10000001 and 001, where 10000001 represents synchronization signal block group 1 and synchronization signal block group 8, and 001 represents the first two actually sent synchronization signal blocks. Through the above indication method, the signaling overhead of the network device indicating the synchronization signal block is bits, where M is the number of synchronization signal block groups. Instead of using the above indication method, the signaling overhead is L bits. For example, when L=64 and M=8, 64 bits are required without using the above indication method, but only 11 bits are required by using the above method. Therefore, by redesigning the indication signaling of the synchronization signal block for the first purpose, the signaling overhead is greatly reduced. In addition, compared with the case of using an index to indicate a synchronization signal block group, although using a bit map to indicate a synchronization signal block group requires a relatively larger number of bits, the use of a bit map can greatly enhance the flexibility of the indication. , for example, multiple synchronization signal block groups may be indicated at one time.

Optional solution five: the UE obtains the indication information of the actually sent synchronization signal block through RMSI signaling, that is, the first indication information. According to the first indication information, the UE obtains which group the actually sent synchronization signal block belongs to. At this time, the second indication information indicates the synchronization signal block group used for the first purpose. This indication can be implemented through the index of scheme 1 or 2, and can also be implemented through the bit map of scheme 3 or 4. In this case, the second information indication may be used, or the network device may send other indication information to the UE, or the system may preset (without receiving indication information) all actually sent synchronization signal blocks in the indicated synchronization signal block group. All are used for the first purpose. For example, FIG. 10 is another schematic diagram of a synchronization signal block used for the first purpose in this application. As shown in Figure 10: the synchronization signal blocks used for the first purpose are all actually transmitted synchronization signal blocks in the synchronization signal block group 2. Network equipment only needs to indicate synchronization signal block group 2 via 001. Alternatively, synchronization signal block group 2 may be indicated by 01000000. Through the above indication method, the signaling overhead of the network device indicating the synchronization signal block is bits, where M is the number of synchronization signal block groups. Instead of using the above indication method, the signaling overhead is L bits. For example, when L=64 and M=8, 64 bits are required without using the above indication method, but only 3 or 8 bits are required by using the above method. Therefore, by redesigning the indication signaling of the synchronization signal block for the first purpose, the signaling overhead is greatly reduced.

Optional solution six: the UE obtains the indication information of the actually sent synchronization signal block, that is, the first indication information, through RMSI or RRC signaling. According to the first indication information, the UE obtains the actually sent synchronization signal block. At this time, the second indication information indicates the synchronization signal block used for the first purpose through the bit map. Since the synchronization signal blocks used for the first purpose are a subset of the actually sent synchronization signal blocks, and the network device will indicate the actually sent synchronization signal blocks through signaling, the network device can perform bit processing for the actually sent synchronization signal blocks. Map instructions. For example, FIG. 11 is another schematic diagram of a synchronization signal block used for the first purpose in this application. As shown in Figure 11: 5 of the 16 synchronization signal blocks actually sent are used for the first purpose and are located in synchronization signal block groups 1, 2, and 8 respectively. Therefore, the network device is indicated with a bitmap of length 1100101000000001, which is for the 16 synchronization signal blocks actually sent. In the above indication method, the length of the bit map is equal to the number of actually sent synchronization signal blocks, so its length is variable, and its corresponding RRC signaling can be

SSBlockRLM-NR BIT STRING(SIZE(m..n))

The above representation SSBlockRLM-NR is a bit sequence with a length between m and n. m is the minimum number of synchronization signal blocks actually sent. For example, the network can set the synchronization signal block to send at least 2, then m=2; n represents the maximum number of synchronization signal blocks actually sent. For example, the network sets the synchronization signal block. A maximum of 64 blocks can be sent, so n=64

In the above method, the signaling overhead of the network device indicating the synchronization signal block depends on the number of synchronization signal blocks actually sent by the network device. This method can significantly reduce signaling overhead when the network device actually sends fewer synchronization signal blocks. At the same time, as in methods three and four, the use of bit maps greatly improves the flexibility of instructions.

Optional solution seven: The UE obtains the indication information of the actually sent synchronization signal block, that is, the first indication information, through RMSI or RRC signaling. According to the first indication information, the UE obtains the actually sent synchronization signal block. At this time, the second indication information indicates that the synchronization signal blocks used for the first purpose are X synchronization signal blocks among the actually sent synchronization signal blocks; optionally, the second indication information also indicates that the X synchronization signal blocks are consecutive synchronization signal blocks; optionally, the second indication information also indicates the first and/or last synchronization signal block of the X synchronization signal blocks. Since the synchronization signal blocks used for the first purpose are a subset of the actually transmitted synchronization signal blocks, the number of bits used to indicate X may vary according to the number of actually transmitted synchronization signal blocks. For example, if the synchronization signal block actually sent is 64 bits, it is represented by 6 bits; if the number of synchronization signal blocks actually sent is 16 bits, it is represented by 4 bits; if the number of synchronization signal blocks actually sent is 8 bits, it is represented by 3 bits. express. Of course, it can also be represented by 6 bits for convenience. Figure 12 is another schematic diagram of a synchronization signal block used for the first purpose in this application. As shown in Figure 12: the synchronization signal blocks used for the first purpose are 4 consecutive synchronization signal blocks among the 16 synchronization signal blocks actually sent. The network device can use 000011 to indicate 4 consecutive actually transmitted synchronization signal blocks (000000~111111, respectively 1~64 consecutive actual transmitted synchronization signal blocks), and 000101 to indicate the first of the 4 synchronization signal blocks. The index of the synchronization signal block (000000~111111 corresponds to the index 1~64 respectively), that is, the synchronization signal block 6. Through the above indication method, the signaling overhead of the network device indicating the synchronization signal block is bits or a smaller number of bits, without using the above indication method, the signaling overhead is L bits. For example, when L=64, 64 bits are required if the above indication method is not used, but only 16 bits are required if the above indication method is used. Therefore, by redesigning the indication signaling of the synchronization signal block for the first purpose, the signaling overhead is greatly reduced. In addition, it can be understood that the indication method in Scheme 7 can be used in Scheme 2 and Scheme 4, so that Scheme 2 and Scheme 4 increase the flexibility of indication on the basis of reducing overhead.

The above seven optional solutions are only examples of possible solutions in this application. The application is not limited to the above seven solutions. At the same time, the above seven solutions can also be combined with each other, or partially combined with each other, and this application is not limited to this.

Next, the network equipment or UE involved in this application will be divided into functional units in combination with one or more of the above methods or solutions. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one in the unit. The above-mentioned integrated units can be implemented in whole or in part through software, hardware, firmware, or any combination thereof. It should be noted that the division of units in this application is schematic and is only a logical function division. In actual implementation, there may be other division methods. Figure 17 shows a schematic structural diagram of the device 100 provided by this application. The device 100 can be applied to implement the network device or UE of this application. Referring to FIG. 17 , the device 100 includes a receiving unit 101 , a sending unit 102 and a processing unit 103 . When the device 100 is used to implement the functions of a network device, the processing unit 103 is used to generate first indication information and second indication information, and the sending unit sends the first indication information and the second indication information. When the device 100 is used to implement the functions of the UE, the receiving unit 101 is used to receive the first indication information and the second indication information sent by the network device, and the processing unit 103 is used to perform the following functions according to the first indication information and the second indication information. , obtain the synchronization signal block for the first purpose. It should be understood that, in combination with any one or more of the above methods, the network device and the UE may also include more functional units to implement more functions, thereby reducing signaling overhead and improving indication flexibility.

When the network device or UE is implemented in the form of hardware, for the concepts, explanations and detailed descriptions, methods, processes and steps related to this application, please refer to the description of these contents in the previous embodiments. In this application, the receiving unit can be implemented through a communication interface, a receiver, a receiving circuit, etc. The sending unit can be implemented through a communication interface, a transmitter, a sending circuit, etc. It should be understood that the functions of the receiving unit and the sending unit can also be integrated together and implemented by communication interfaces, transceivers, and transceiver circuits. Among them, communication interface is a general term and can include one or more interfaces.

It can be understood that the above description is only a simplified example of the hardware form. In actual applications, the hardware that implements the network device or UE is not limited to the above structure. For example, it may also include a processor, a memory, an antenna array, a duplexer and a baseband. processing part. The processor can be a Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), or a Field Programmable Gate Array ( Field Programmable GateArray (FPGA) or other programmable logic devices, hardware components, or any combination thereof. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of DSP and microprocessors, and so on. The memory can be located within the processor or can exist separately. Duplexers are used to implement antenna arrays, both for transmitting and receiving signals. The transmitter is used to convert between radio frequency signals and baseband signals. Usually the transmitter can include a power amplifier, a digital-to-analog converter and a frequency converter, and usually the receiver can include a low-noise amplifier, an analog-to-digital converter and a frequency converter. Among them, the receiver and transmitter are sometimes collectively referred to as transceivers. The baseband processing part is used to implement the processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/decoding, etc., and for physical control channels, physical data channels, physical broadcast channels, reference signals, etc. Perform separate processing. As an implementation method, the functions of the receiver and transmitter can be implemented through a transceiver circuit or a dedicated chip for transceiver. The processor can be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip. As another implementation manner, program codes that implement the functions of the processor, receiver, and transmitter are stored in a memory, and the general-purpose processor implements the functions of the processor, receiver, and transmitter by executing the codes in the memory.

For example, the implementation of a network device can refer to Figure 13. As shown in Figure 13, a network device 1000 is provided including: a processor 1001, a memory 1004, a receiver 1003, and a transmitter 1002. The receiver 1003 and the transmitter 1002 For communicating with other network elements, the memory 1004 is used to store programs that can be executed by the processor 1001. The programs include instructions for implementing the methods, steps or processes described in the above embodiments. For specific methods, processes, steps and beneficial effects, please refer to the descriptions of these contents in the foregoing embodiments, and will not be described again here. For another example, the implementation of network equipment can also refer to Figure 14.

For example, the implementation of the UE can refer to Figure 15. As shown in Figure 15, a UE 2000 is provided including: a processor 2001, a memory 2003, and a transceiver 2002. The transceiver 2002 is used to communicate with other network elements (can communicate with other network elements through an antenna). Communication with other network elements), the memory 2003 is used to store programs that can be executed by the processor 2001. The programs include instructions for implementing the methods, steps or processes described in the above embodiments. For specific methods, processes, steps and beneficial effects, please refer to the descriptions of these contents in the foregoing embodiments, and will not be described again here. For another example, the implementation of the UE can also refer to Figure 16.

When the network device or UE is implemented by software, please refer to the description of these contents in the foregoing method for the concepts, explanations, detailed descriptions and other steps related to this application. In this application, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in this application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc. The storage media shown can be integrated into a device, module, or processor, or can be set up separately.

According to the method provided by this application, this application also provides a communication system, which includes the aforementioned network device and UE.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (38)

1. A method of indication, the method comprising:

the method comprises the steps that User Equipment (UE) receives first indication information sent by network equipment, wherein the first indication information comprises indication information of a synchronous signal block which is actually sent; the number of the actually transmitted synchronous signal blocks is less than the number of the possible transmitted synchronous signal blocks;

the UE receives second indication information sent by the network equipment, wherein the second indication information comprises indication information of a synchronous signal block used for a first use; wherein the second indication information is generated by the network device according to the first indication information; the first use includes a use implemented based on processing the actually transmitted synchronization signal block;

and the UE acquires the synchronous signal block for the first purpose according to the first indication information and the second indication information.

2. The indication method according to claim 1, wherein the second indication information indicates at least one of the following information: a synchronization signal block group for the first purpose, a synchronization signal block for the first purpose in the synchronization signal block group, and a synchronization signal block for the first purpose in the actually transmitted synchronization signal block.

3. The indication method according to claim 2, wherein when the second indication information indicates a synchronization signal block group for the first purpose, all actually transmitted synchronization signal blocks in the synchronization signal block group are used for the first purpose.

4. The indication method according to claim 2, wherein the second indication information indicates that the synchronization signal blocks for the first purpose in the synchronization signal block group specifically include X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal block group, where X is a positive integer greater than or equal to 1.

5. The indication method of claim 4, wherein X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal block group include a first X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal group or a last X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal group.

6. The indication method according to claim 2, wherein the second indication information indicates that a synchronization signal block for a first purpose from among the actually transmitted synchronization signal blocks includes X actually transmitted synchronization signal blocks for a first purpose from among the actually transmitted synchronization signal blocks, wherein X is a positive integer greater than or equal to 1.

7. The indication method according to claim 4 or 6, wherein the X actually transmitted synchronization signal blocks for the first use include X consecutive actually transmitted synchronization signal blocks.

8. The indication method according to claim 4 or 6, wherein the second indication information further indicates a first or last synchronization signal block of the X actually transmitted synchronization signal blocks for the first use.

9. The method of indication according to any one of claims 1 to 6, wherein,

the synchronous signal block group for the first use is indicated by an index or a bit map;

the synchronization signal block for the first purpose in the synchronization signal block group or the synchronization signal block for the first purpose in the actually transmitted synchronization signal block is indicated by a bit map; or,

The first synchronization signal block or the last synchronization signal block is indicated by an index.

10. A method of indication, the method comprising:

the network equipment sends first indication information to User Equipment (UE), wherein the first indication information comprises indication information of a synchronous signal block which is actually sent; the number of the actually transmitted synchronous signal blocks is less than the number of the possible transmitted synchronous signal blocks;

the network equipment generates second indication information according to the first indication information, wherein the second indication information comprises indication information of a synchronous signal block used for a first use; the first use includes a use implemented based on processing the actually transmitted synchronization signal block;

and the network equipment sends the second indication information to the UE.

11. The indication method according to claim 10, wherein the second indication information indicates at least one of the following information: a synchronization signal block group for the first purpose, a synchronization signal block for the first purpose in the synchronization signal block group, and a synchronization signal block for the first purpose in the actually transmitted synchronization signal block.

12. The indication method of claim 11, wherein when the second indication information indicates a synchronization signal block group for the first purpose, all actually transmitted synchronization signal blocks in the synchronization signal block group are used for the first purpose.

13. The indication method according to claim 11, wherein the second indication information indicates that the synchronization signal blocks for the first purpose in the synchronization signal block group specifically include X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal block group, where X is a positive integer greater than or equal to 1.

14. The indication method according to claim 13, wherein X actually transmitted synchronization signal blocks for the first use in the synchronization signal block group include first X actually transmitted synchronization signal blocks for the first use in the synchronization signal group or last X actually transmitted synchronization signal blocks for the first use in the synchronization signal group.

15. The indication method according to claim 11, wherein the second indication information indicates that a synchronization signal block for a first purpose from among the actually transmitted synchronization signal blocks includes X actually transmitted synchronization signal blocks for a first purpose from among the actually transmitted synchronization signal blocks, wherein X is a positive integer greater than or equal to 1.

16. The indication method according to claim 13 or 15, wherein the X actually transmitted synchronization signal blocks for the first use comprise X consecutive actually transmitted synchronization signal blocks.

17. The indication method according to claim 13 or 15, wherein the second indication information further indicates a first or last synchronization signal block of the X actually transmitted synchronization signal blocks for the first use.

18. The indication method according to any one of claims 10 to 15, characterized in that,

the synchronous signal block group for the first use is indicated by an index or a bit map;

the synchronization signal block for the first purpose in the synchronization signal block group or the synchronization signal block for the first purpose in the actually transmitted synchronization signal block is indicated by a bit map; or,

the first synchronization signal block or the last synchronization signal block is indicated by an index.

19. A communication device, the communication device comprising:

a receiving unit, configured to receive first indication information sent by a network device, where the first indication information includes indication information of a synchronization signal block that is actually sent; the number of the actually transmitted synchronous signal blocks is less than the number of the possible transmitted synchronous signal blocks;

the receiving unit is further configured to receive second indication information sent by the network device, where the second indication information includes indication information of a synchronization signal block used for the first application; wherein the second indication information is generated by the network device according to the first indication information; the first use includes a use implemented based on processing the actually transmitted synchronization signal block;

And the processing unit is used for acquiring the synchronous signal block for the first purpose according to the first indication information and the second indication information.

20. The communication apparatus of claim 19, wherein the second indication information indicates at least one of: and the synchronization signal block group is used for the first purpose, the synchronization signal blocks used for the first purpose in the synchronization signal block group are used for the synchronization signal blocks used for the first purpose in the actually transmitted synchronization signal blocks.

21. The communication apparatus according to claim 20, wherein when the second indication information indicates a synchronization signal block group for the first purpose, all actually transmitted synchronization signal blocks in the synchronization signal block group are used for the first purpose.

22. The communication apparatus according to claim 20, wherein the second indication information indicates that the synchronization signal blocks for the first purpose in the synchronization signal block group specifically include X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal block group, wherein X is a positive integer greater than or equal to 1.

23. The communication apparatus according to claim 22, wherein X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal block group include a first X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal group or a last X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal group.

24. The communication apparatus according to claim 20, wherein the second indication information indicating the synchronization signal blocks for the first purpose among the actually transmitted synchronization signal blocks includes, the second indication information indicating X actually transmitted synchronization signal blocks for the first purpose among the actually transmitted synchronization signal blocks, wherein X is a positive integer greater than or equal to 1.

25. The communication apparatus according to claim 22 or 24, wherein the X actually transmitted synchronization signal blocks for the first use comprise X consecutive actually transmitted synchronization signal blocks for the first use.

26. The communication apparatus according to claim 22 or 24, wherein the second indication information further indicates a first or last synchronization signal block of the X actually transmitted synchronization signal blocks for the first use.

27. A communication device according to any one of claims 19 to 24, wherein,

the synchronous signal block group for the first use is indicated by an index or a bit map;

the synchronization signal block for the first purpose in the synchronization signal block group or the synchronization signal block for the first purpose in the actually transmitted synchronization signal block is indicated by a bit map; or,

The first synchronization signal block or the last synchronization signal block is indicated by an index.

28. A communication device, the communication device comprising:

a sending unit, configured to send first indication information to a user equipment UE, where the first indication information includes indication information of a synchronization signal block that is actually sent; the number of the actually transmitted synchronous signal blocks is less than the number of the possible transmitted synchronous signal blocks;

a processing unit, configured to generate second indication information according to the actually transmitted synchronization signal block, where the second indication information includes indication information of the synchronization signal block for the first use; the first use includes a use implemented based on processing the actually transmitted synchronization signal block;

the sending unit is further configured to send the second indication information to the UE.

29. The communication apparatus of claim 28, wherein the second indication information indicates at least one of: and the synchronization signal block group is used for the first purpose, the synchronization signal blocks used for the first purpose in the synchronization signal block group are used for the synchronization signal blocks used for the first purpose in the actually transmitted synchronization signal blocks.

30. The communication apparatus according to claim 29, wherein when the second indication information indicates a synchronization signal block group for the first purpose, all actually transmitted synchronization signal blocks in the synchronization signal block group are used for the first purpose.

31. The communication apparatus according to claim 29, wherein the second indication information indicates that the synchronization signal blocks for the first purpose in the synchronization signal block group specifically include X actually transmitted synchronization signal blocks for the first purpose in the synchronization signal block group, wherein X is a positive integer greater than or equal to 1.

32. The communication apparatus of claim 31, wherein X actually transmitted sync signal blocks for a first purpose in the sync signal block group comprise a first X actually transmitted sync signal blocks for the first purpose in the sync signal group or a last X actually transmitted sync signal blocks for the first purpose in the sync signal group.

33. The communication apparatus according to claim 29, wherein the second indication information indicates that a synchronization signal block for a first purpose among the actually transmitted synchronization signal blocks includes, among the actually transmitted synchronization signal blocks, X actually transmitted synchronization signal blocks for the first purpose, wherein X is a positive integer greater than or equal to 1.

34. The communication apparatus according to claim 31 or 33, wherein the X actually transmitted synchronization signal blocks for the first use comprise X consecutive actually transmitted synchronization signal blocks for the first use.

35. The communication apparatus according to claim 31 or 33, wherein the second indication information further indicates a first or last synchronization signal block of the X actually transmitted synchronization signal blocks for the first use.

36. The communication device according to any one of claims 28 to 33, wherein,

the synchronous signal block group for the first use is indicated by an index or a bit map;

the synchronization signal block for the first purpose in the synchronization signal block group or the synchronization signal block for the first purpose in the actually transmitted synchronization signal block is indicated by a bit map; or,

the first synchronization signal block or the last synchronization signal block is indicated by an index.

37. A communication system comprising a communication device according to any of claims 28-36 and a communication device according to any of claims 19-27.

38. A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1-18.