Synchronization signal block processing method and device, communication device, and readable storage medium

Abstract

The present application discloses a synchronization signal block processing method and apparatus, a communication device, and a readable storage medium, the method including the steps of detecting a synchronization signal block SSB at a predetermined frequency domain position and obtaining a first SSB, the first SSB including an SSB having a target extended cyclic prefix, at least one of a plurality of identical SSBs, and decoding the first SSB.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority from Chinese Patent Application No. 202010388668.3, filed in China on May 9, 2020, the entire contents of which are incorporated herein by reference. [Technical field]

[0002] The present application relates to the field of communications, and in particular to a synchronization signal block processing method and apparatus, a communication device, and a readable storage medium. [Background technology]

[0003] Since the propagation loss of the high band is larger than that of the low band, the coverage distance of FR2x, i.e., the band beyond 52.6 GHz, is shorter than that of Long Term Evolution (LTE). In the process of realizing the present application, the inventors discovered that in the conventional technology, the coverage of the Synchronization Signal Block (SSB) is expanded using beamforming technology, but in some scenes, especially in the initial access scene, the transmission distance of the SSB signal is short due to the high frequency characteristics, resulting in poor coverage of the SSB. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the embodiments of the present application is to provide a synchronization signal block processing method and apparatus, a communication device, and a readable storage medium that can solve the problem in the prior art that the transmission distance of an SSB signal is short and the coverage of the SSB is poor due to the high frequency characteristics in initial access scenes. [Means for solving the problem]

[0005] In order to solve the above technical problems, the present application is realized as follows.

[0006] In a first aspect, an embodiment of the present application provides a method for processing a synchronization signal block, comprising the steps of detecting a synchronization signal block SSB at a predetermined frequency domain position to obtain a first SSB, the first SSB including an SSB having a target extended cyclic prefix, at least one of a plurality of identical SSBs, and decoding the first SSB.

[0007] In a second aspect, an embodiment of the present application provides a method for processing a synchronization signal block, comprising the step of transmitting a first synchronization signal block SSB at a predetermined frequency domain position, the first SSB being an SSB having a target extended cyclic prefix, the synchronization signal block including at least one of a plurality of identical SSBs.

[0008] In a third aspect, an embodiment of the present application provides a synchronization signal block processing device including: a detection module for detecting a synchronization signal block SSB at a predetermined frequency domain position and obtaining a first SSB, the first SSB including an SSB having a target extended cyclic prefix, at least one of a plurality of identical SSBs; and a decoding module for decoding the first SSB.

[0009] In a fourth aspect, an embodiment of the present application provides a processing device for a synchronization signal block including a transmitting module for transmitting a first synchronization signal block SSB at a predetermined frequency domain position, the first SSB being an SSB having a target extended cyclic prefix, the processing device including at least one of a plurality of identical SSBs.

[0010] In a fifth aspect, an embodiment of the present application provides a communications device comprising a processor, a memory and a program or instructions stored in the memory and executable on the processor, the program or instructions, when executed by the processor, implementing steps of the method according to the first aspect.

[0011] In a sixth aspect, an embodiment of the present application provides a communications device comprising a processor, a memory and a program or instructions stored in the memory and executable on the processor, the program or instructions, when executed by the processor, implementing steps of the method according to the second aspect.

[0012] In a seventh aspect, an embodiment of the present application provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implements the steps of the method according to the first aspect.

[0013] In an eighth aspect, an embodiment of the present application provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implements the steps of the method according to the second aspect.

[0014] In a ninth aspect, an embodiment of the present application provides a chip including a processor and a communications interface, the communications interface and the processor being coupled together, the processor executing a program or instructions for use in implementing the method of the first aspect.

[0015] In a tenth aspect, an embodiment of the present application provides a chip including a processor and a communications interface, the communications interface and the processor being coupled together, the processor executing a program or instructions for use in implementing the method of the second aspect. Effect of the Invention

[0016] In an embodiment of the present application, a first synchronization signal block SSB can be transmitted at a predetermined frequency domain position, the first SSB including at least one of an SSB with a target extended cyclic prefix and a plurality of identical SSBs, and the first SSB can be detected at a predetermined frequency domain position and the detected first SSB can also be decoded. Since the extended cyclic prefix can provide better coverage by suppressing inter-symbol interference and inter-carrier frequency interference caused by multipath delay, the coverage range of the SSB can be further expanded under beamforming by transmitting the first SSB with a target cyclic prefix at a predetermined frequency domain position, and accordingly, the first SSB can be detected at a longer distance, thus realizing the coverage enhancement of the SSB. In addition, since a plurality of identical SSBs are transmitted at a predetermined frequency domain position, one or more signals are increased from the original, which corresponds to the superposition of multiple powers, i.e., the transmission distance is longer than that of a single SSB, and accordingly, the plurality of identical SSBs can be detected at a longer distance, thus realizing the coverage enhancement of the SSB. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a schematic diagram of the structure of an SSB in an embodiment of the present application. [Diagram 2] FIG. 1 is a schematic diagram of transmitting SSB using a beamforming method in an embodiment of the present application. [Diagram 3] 1 is a structural diagram of a network system to which an embodiment of the present application can be applied. [Figure 4] FIG. 1 is a flowchart showing a processing method for a synchronization signal block according to an embodiment of the present application; [Diagram 5] FIG. 2 is a flowchart showing a processing method for a synchronization signal block according to an embodiment of the present application; [Figure 6] FIG. 2 is a schematic diagram of grouping multiple synchronized rasters in an embodiment of the present application; [Figure 7] 1 is a schematic diagram showing frequency domain repeated transmission of SSB at the same time domain position in an embodiment of the present application. [Figure 8] 1 is a schematic diagram of the transmission or reception of multiple consecutive SSBs in the time domain in an embodiment of the present application; [Figure 9] FIG. 1 is a schematic diagram showing transmission or reception of multiple SSBs at specific time intervals or SSB index intervals in an embodiment of the present application. [Figure 10] 1 is a schematic diagram of merging of multiple consecutive SSBs and repeated transmission or reception in the time domain in an embodiment of the present application. [Figure 11] FIG. 1 is a structural schematic diagram of a synchronization signal block processing device according to an embodiment of the present application; [Figure 12] FIG. 2 is a structural schematic diagram of a synchronization signal block processing device according to an embodiment of the present application; [Figure 13] FIG. 2 is a structural diagram of a communication device provided in an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is to be understood that the described embodiments are only a part of the embodiments of the present application, and are not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative efforts shall fall within the scope of protection of the present application.

[0019] The terms "first," "second," etc. in the specification and claims of this application are not intended to describe a particular order or sequence, but are intended to distinguish between similar objects. It should be understood that the terms used in this manner may be substituted for one another where appropriate, such that the embodiments of this application may be practiced in an order other than that shown or described herein. Also, "and / or" in the specification and claims means at least one of the objects connected, and the " / " symbol generally means that the related objects before and after are in an "or" relationship.

[0020] First, the relevant terms used in this application will be explained. 1) Initial search

[0021] When a user equipment (UE) is powered on or changes cells, it needs to perform an initial search, the purpose of which is to obtain downlink synchronization of the cell by 1) time synchronization detection and 2) frequency synchronization detection.

[0022] It should be noted that one of the most important functions of the initial search is to find an available network, that is, the UE performs a blind search across all network bands based on the Global Synchronization Channel Number (GSCN) of its supported operating band and the synchronization signal block number specified in the protocol. According to the protocol specification, in the FR2 band (24.25G~100GHz), the UE performs a blind search with a step size (sync raster) of 17.28MHz to find a suitable access band for its access. 2)SSB structure

[0023] The initial search process is completed by the Synchronization Signal Block (SSB), which is composed of the Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), Physical Broadcast Channel (PBCH) and Demodulation Reference Signal (DMRS) within four consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols, and is mainly used for downlink synchronization. Its structure is shown in Figure 1. 3) SSB transmission mechanism

[0024] Due to the scarcity of low-band resources, 5G NR uses high-bands such as millimeter waves, and the propagation loss of high-bands is greater than that of low-bands, so the coverage distance is shorter than that of LTE. Therefore, 5G uses the method of beam forming with multiple antennas to strengthen the signal and further strengthen the coverage, that is, beam forming is used as the transmission method for SSB.

[0025] Because the beam is narrow, in NR, the same SSB is transmitted in different directions in the form of a beam using Time Division Duplexing (TDD) so that the UE in each direction can receive the SSB. Within a range of 5 ms, the base station transmits multiple SSBs (corresponding to different SSB indexes) to cover different directions, as shown in Figure 2. The UE receives multiple SSBs with different signal strengths and selects the SSB with the strongest signal strength as its own SSB beam.

[0026] In the above example, within a time period of 5 ms, the base station transmits a series of SSBs in each direction, and this series of SSBs is a synchronization signal burst set (SS burst set). The repetition period of the SS burst set is the SS Burst Set period, which is set to 20 ms by default in 5G. According to the current standard protocol, the value of the SSB period is in the range of {ms5, ms10, ms20, ms40, ms80, ms160}. By default, the terminal detects one SSB every 20 ms.

[0027] The maximum number of SSBs supported within an SS Burst Set is not the same, but varies according to the frequency it is located in. If F<=6Ghz, the maximum number of SSBs is 8, and if F>6Ghz, the maximum number of SSBs is 64. The reason for the different maximum number of SSBs is that the higher the frequency, the greater the loss, and in order to achieve good coverage performance, the narrower the beam to transmit the SSBs, so more SSBs are needed to achieve coverage in each direction, and therefore the number of SSBs is also larger.

[0028] SSB Time Domain Position For a half frame (5 ms) with SSB, the number of candidate SSBs and the index position of the first symbol are determined as follows based on the subcarrier spacing of the SSB. The following cases are all cases for the half frame.

[0029] -Case A - 15 KHz Spacing The index of the first symbol of the candidate SSB is {2, 8} + 14 * n. When F (Frequent) <= 3 GHz, n = 0, 1 (Note: 2 slots are occupied, and there are also 2 numbers in {}, and in this case, there are a total of 4 SSBs in 2 ms, so Lmax = 4). When 3 GHz < F <= 6 GHz, n = 0, 1, 2, 3 (that is, 4 slots are occupied, and Lmax = 8 within 4 ms).

[0030] -Case B - 30 KHz Spacing The index of the first symbol of the candidate SSB is {4, 8, 16, 20} + 28 * n (2 slots are occupied within 1 ms, and there are 2 SSBs within 1 slot). When F <= 3 GHz, n = 0 (that is, 2 slots are occupied, so Lmax = 4 within 1 ms). When 3 GHz < F <= 6 GHz, n = 0, 1, 2, 3 (that is, 4 slots are occupied, and Lmax = 8 within 2 ms).

[0031] -Case C - 30 KHz Spacing The index of the first symbol of the candidate SSB is {2, 8} + 14 * n (2 slots are occupied within 1 ms, and there are 2 SSBs within 1 slot). When F (Frequent) <= 3 GHz, n = 0, 1 (that is, 2 slots are occupied, so Lmax = 4 within 2 ms). When 3 GHz < F <= 6 GHz, n = 0, 1, 2, 3 (that is, 4 slots are occupied, and Lmax = 8 within 4 ms).

[0032] -Case D - 120 KHz Spacing The index of the first symbol of the candidate SSBs is {4,8,16,20}+28*n, where n=0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18 for F>6GHz (8 slots are occupied in 1ms, there are 2 SSBs in 1 slot, 16 SSBs are occupied per 1ms, for a total of 4 groups, in this case Lmax=64 within 4ms).

[0033] -CaseE-240KHz interval The index of the first symbol of the candidate SSBs is {8,12,16,20,32,36,40,44}+56*n, where n=0,1,2,3,5,6,7,8 for F>6GHz (16 slots are occupied in 1ms, there are 2 SSBs in one slot, 32 SSBs are occupied per 1ms, for a total of 2 groups, in this case Lmax=64 in 2ms). 4) Cyclic prefix

[0034] In an Orthogonal Frequency Division Multiplexing (OFDM) system, one blank symbol can be inserted as a guard interval, which can eliminate Inter Symbol Interference (ISI), but cannot eliminate Inter Carrier Interference (ICI). A cyclic prefix is ​​a part of the OFDM signal within a certain length at the end that is extracted and added to the header of the OFDM signal. If the OFDM signal that has become longer after adding the cyclic prefix is ​​used as a new OFDM signal, ISI and ICI can be completely eliminated. Cyclic prefixes are divided into normal cyclic prefixes and extended cyclic prefixes, and the difference between them is their length. The higher the frequency, the smaller the cell and delay spread, and the shorter the corresponding CP length.

[0035] For normal cyclic prefix (NCP), a CP is added for each symbol (14 symbols) in one slot, and the CP length is short. For extended cyclic prefix (ECP), one slot can only transmit 12 symbols, and each symbol has a long CP. ECP can provide better coverage by more effectively suppressing inter-symbol interference and inter-carrier frequency interference caused by multipath delay, but the system capacity is reduced accordingly.

[0036] In the following, the SSB processing method and SSB processing device provided in the embodiments of the present application will be described according to specific embodiments and their application scenarios with reference to the drawings, and the SSB processing method and SSB processing device provided in the embodiments of the present application can be applied to a wireless communication system. The wireless communication system may be a New Radio (NR) system or other systems, such as an Evolved Long Term Evolution (eLTE) system or a Long Term Evolution (LTE) system, or a future evolved communication system. Furthermore, it can be applied to an unlicensed band in the wireless communication system.

[0037] Referring to FIG. 3, FIG. 3 is a structural diagram of a network system to which the embodiment of the present application can be applied. As shown in FIG. 3, it includes a terminal 11, an intermediate device 12, and a network device 13, among which the terminal 11 may be a user terminal (User Equipment, UE) or other terminal side devices, such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile Internet device (MID), a wearable device, or a robot, and it should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The intermediate device 12 may be a device based on a new artificial metamaterial such as Large Intelligent Surfaces (LIS), a backscatter device, a WiFi device, or a relay device (such as a layer 1 relay, an amplify and forward relay, or a transparent forward relay, etc.). The network device 13 may be a network device, a WiFi device, or a terminal device. The network device may be a 4G base station, or a 5G base station, or a base station of a later version, or a base station in other communication systems, or may be called a Node B, an evolved Node B, or a Transmission Reception Point (TRP), or an Access Point (AP), or other terms in the field, and the network device is not limited to a specific technical term as long as it can achieve the same technical effect. In addition, the network device 13 may be a Master Node (MN) or a Secondary Node (SN).

[0038] In the embodiment of the present application, the terminal 11 can communicate with the network device 13 through the intermediate device 12, for example, the intermediate device 12 can forward the signal that the terminal 11 transmits to the network device 13, and the network device 13 can also forward the signal that the terminal 11 transmits. The forwarding of the intermediate device 12 can be direct forwarding, transparent forwarding, amplifying forwarding, or signal frequency conversion or modulation before transmission, etc., and is not limited thereto. Of course, in the embodiment of the present application, the signal transmitted between the terminal 11 and the intermediate device 12 can be the signal that needs to be transmitted between the terminal 11 and the intermediate device 12, that is, the scene does not need to include the network device 13. In addition, the terminal 11 can directly communicate with the network device 13.

[0039] In addition, in the embodiment of the present application, the LIS device is a device made of a novel artificial material, and the LIS node can dynamically / semi-statically adjust its own electromagnetic properties to affect the reflection / refraction behavior of the electromagnetic wave radiated to the LIS node, such as changing the frequency, amplitude, phase, polarization direction, and beam spatial energy distribution of the reflected / refracted signal. The LIS node can control the reflected / refracted signal of the electromagnetic signal to realize functions such as beam sweeping / beam forming.

[0040] It should be noted that the SSB processing method in the embodiment of the present application involves the interaction between the network side and the terminal side, and the network side equipment may optionally be a base station or other network equipment, and the terminal side equipment may optionally be a UE or other terminal side equipment.

[0041] Based on this, in the embodiment of the present application, the network side device is a base station and the terminal side device is a UE as an example. For the whole interaction process, the steps of the SSB processing method in the embodiment of the present application are as follows: A step S102 in which the base station transmits a first synchronization signal block SSB at a predetermined frequency domain position, the first SSB including at least one of a SSB having a target extended cyclic prefix, a plurality of identical SSBs; Step S104: the UE detects a synchronization signal block SSB at a predetermined frequency domain position to obtain a first SSB; The method may also include a step S106 of the UE decoding the first SSB.

[0042] In order to describe the SSB processing method in the embodiment of the present application in more detail, the following describes the steps of the method in the embodiment of the present application from the terminal side and the network side respectively.

[0043] For the base station side, please refer to FIG. 4, which is a procedure diagram 1 of the SSB processing method provided in the embodiment of the present application. As shown in FIG. 4, the steps of the method include: The method includes a step S402 of transmitting a first synchronization signal block SSB at a predetermined frequency domain position, the first SSB including an SSB having a target extended cyclic prefix ECP, at least one of a plurality of identical SSBs.

[0044] Optionally, the target extended cyclic prefix in the embodiment of the present application may include at least one of the following extended cyclic prefixes: ECP, ECP-1, ECP-2. It should be noted that the above target extended cyclic prefix is ​​only a preferred embodiment of the present application, and other types of target extended cyclic prefixes, such as ECP-3, also fall within the scope of protection of the present application and may be adjusted according to actual circumstances.

[0045] Since different types of extended cyclic prefixes can provide better coverage by suppressing inter-symbol interference and inter-carrier frequency interference caused by multipath delay, by transmitting a first SSB having a target cyclic prefix at a specified frequency domain position, the coverage range of the SSB can be further expanded under beamforming, thereby realizing enhanced SSB coverage.

[0046] Furthermore, the first SSB transmitted at a predetermined frequency domain position is a plurality of identical SSBs, and transmitting a plurality of identical SSBs at a predetermined frequency domain position is equivalent to an increase in one or more signals for the base station. For example, transmitting two identical SSBs together is equivalent to two powers being superimposed, so that the coverage distance of the SSB becomes longer than the transmission distance of a single SSB, thereby realizing enhanced SSB coverage.

[0047] For the terminal side, please refer to FIG. 5, which is the procedure diagram 2 of the SSB processing method provided in the embodiment of the present application. As shown in FIG. 5, the steps of the method include: A step S502 of detecting a synchronization signal block SSB at a predetermined frequency domain position to obtain a first SSB, the first SSB including at least one of a SSB having a target extended cyclic prefix and a plurality of identical SSBs; and step S504 of decoding the first SSB.

[0048] Optionally, the target extended cyclic prefix in the embodiment of the present application may include at least one of the following extended cyclic prefixes: ECP, ECP-1, ECP-2. It should be noted that the above target extended cyclic prefix is ​​only a preferred embodiment of the present application, and other types of target extended cyclic prefixes, such as ECP-3, also fall within the scope of protection of the present application and may be adjusted according to actual circumstances.

[0049] Different types of extended cyclic prefixes can provide better coverage by suppressing inter-symbol interference and inter-carrier frequency interference caused by multipath delay, so that the first SSB having a target cyclic prefix can be received at a specified frequency domain position at a longer coverage distance, thereby enhancing the coverage of the SSB.

[0050] Furthermore, the first SSB transmitted by the base station at a predetermined frequency domain position is a plurality of identical SSBs, and transmitting a plurality of identical SSBs at a predetermined frequency domain position is equivalent to an increase in one or more signals for the base station. For example, transmitting two identical SSBs together is equivalent to two powers being superimposed, and thus the coverage distance of the SSB becomes longer than the transmission distance of a single SSB, and accordingly, the terminal side can receive the plurality of identical SSBs at a longer distance, thereby realizing enhanced SSB coverage.

[0051] Optionally, the cyclic prefixes of the same SSB in the embodiment of the present application include one of an extended cyclic prefix (ECP) and a normal cyclic prefix (NCP), and may further include other types of extended cyclic prefixes, such as ECP-1, ECP-2, etc.

[0052] It should be noted that when the first SSB is an SSB having multiple target extended cyclic prefixes or multiple identical SSBs, the method for decoding the first SSB in an embodiment of the present application may selectively perform joint decoding on multiple SSBs having the target cyclic prefix or multiple identical SSBs.

[0053] In other words, when it is detected that there are multiple first SSBs, it is necessary to decode the multiple SSBs using a method that performs joint decoding in order to realize enhanced SSB coverage.

[0054] Optionally, the predetermined frequency domain locations in the embodiments of the present application are one or more frequency domain locations in a synchronous raster, or one or more frequency domain locations in an asynchronous raster, or one or more frequency domain locations in a combination of synchronous and asynchronous rasters.

[0055] In this regard, in a specific application scenario, when a terminal operates in a certain frequency band (e.g., 52.6 GHz), a part of the frequency domain positions defined in the frequency band is used for SSB transmission of the extended cyclic prefix structure (the first sync raster set or the third non-sync raster set), and another part is used for SSB transmission of the normal cyclic prefix structure (the second sync raster set or the fourth non-sync raster set). The user terminal searches for the SSB of the target extended cyclic prefix structure in the first sync raster set or the third non-sync raster set, and of course, the first sync raster set and the third non-sync raster set may be completely orthogonal or have overlapping sync rasters. That is, the user can simultaneously search for the SSB of the target extended cyclic prefix in the overlapping sync rasters.

[0056] It should be noted that the system information or RRC message may indicate whether the SSB to be transmitted on the carrier has a normal cyclic prefix structure or a target extended cyclic prefix structure. In addition, when multiple SSBs having a target cyclic prefix are detected in the first sync raster set or the third non-sync raster set, joint decoding can be performed on the detected multiple SSBs.

[0057] For measuring the RRC message configured Scell ​​or the system information / RRC message configured SSB, the user terminal can determine whether the configured SSB has an extended cyclic prefix or a normal cyclic prefix structure in at least one of the following ways: 1) The configured SSB frequency, i.e., the SSB frequency and the SSB of the extended cyclic prefix / normal cyclic prefix structure have a correspondence relationship, e.g., for sync raster frequency points, the correspondence relationship defined above is reused, and for non-sync raster frequency points, some rules are defined to determine whether the target extended cyclic prefix or normal cyclic prefix is ​​used. For example, a frequency between the sync rasters of two adjacent target extended cyclic prefixes is predefined as a target extended cyclic prefix, a frequency between the sync rasters of two adjacent normal cyclic prefixes is predefined as a normal cyclic prefix, and a frequency between the sync rasters of adjacent normal cyclic prefixes and the sync rasters of the target extended cyclic prefix is ​​predefined as a target extended cyclic prefix or a normal cyclic prefix. 2) Indication Configuration Indicates whether the target extended cyclic prefix or normal cyclic prefix structure is used on the SSB frequency. 3) Matches the configuration of the target extended cyclic prefix or normal cyclic prefix of the carrier or BWP in the configuration cell or a specific channel.

[0058] As shown in FIG. 6, assuming there are originally 10 sync rasters, they may be further divided into two groups of sync rasters, one group carrying a target extended cyclic prefix sequence and another group carrying a normal cyclic prefix sequence, where the target extended cyclic prefix sequence and the normal cyclic prefix sequence may have some overlapping portions.

[0059] Alternatively, the predetermined frequency domain positions in this embodiment are multiple frequency domain positions corresponding to the same time domain in multiple synchronous and / or asynchronous rasters, or the predetermined frequency domain positions are multiple frequency domain positions in a target time domain in multiple periods, the multiple periods being multiple periods within multiple synchronous and / or asynchronous rasters.

[0060] In this regard, in a specific application scenario of the embodiment of the present application, as shown in Figure 7, the sync raster in the set of sync raster 1, 3, 5, 7, and 9 performs frequency domain repeated transmission of SSB, and is used to enhance the coverage of SSB. That is, the UE can perform joint decoding of SSB1 in sync raster 1 with SSB1 in sync raster 3 T1 and / or SSB1 in T2. ​​That is, the target time domain is SSB1 in T1 and SSB1 in T2. ​​Of course, the above Figure 7 is merely an example, and the target time domain may be other SSB, such as SSB3, SSB0, etc., that is, it may be adjusted according to the actual situation, and this application is not limited thereto.

[0061] For measurement of the RRC message configured Scell, or the system information / RRC message configured SSB, the user terminal may determine the frequency domain repetition transmission information of the configured SSB in at least one of the following ways: 1) A configured SSB frequency group, i.e., SSBs within a configured SSB frequency group are repeatedly transmitted. 2) Configure one SSB frequency and frequency domain repetition number, and the UE derives the SSB frequency according to a predefined rule.

[0062] Optionally, the predetermined frequency domain location in the embodiment of the present application is a frequency domain location corresponding to a first set of time domain locations, and the SSBs corresponding to the first set of time domain locations include at least one of SSBs with consecutive indices, SSBs whose time intervals or SSB indices satisfy a predetermined relationship.

[0063] It should be noted that the SSBs whose time intervals or SSB indices satisfy the predetermined relationship include consecutive SSBs or non-consecutive SSBs whose time intervals or SSB indices satisfy the predetermined relationship.

[0064] In a specific application scenario of the embodiment of the present application, for SSBs with consecutive indices, multiple consecutive SSBs can be transmitted and received in the time domain, and then jointly decoded to realize enhanced SSB coverage. As shown in Figure 8, the Quasi-Colocation (QCL) information of every R consecutive SSBs is the same, which is predefined or configured by the base station. When R=4, the UE can use SSBs 1, 2, 3, and 4 to perform merge decoding.

[0065] In a specific application scenario of the embodiment of the present application, for non-consecutive SSBs whose time intervals or SSB indexes satisfy a predetermined relationship, multiple SSBs can be transmitted and received at specific time intervals or SSB index intervals, and jointly decoded to enhance the coverage of the SSBs. There are two methods for non-consecutive SSBs whose time intervals or SSB indexes satisfy a predetermined relationship: 1) As shown in FIG. 9, the SSB index is not extended, and an SSB with an SSB index interval of R is specified or configured to be transmitted repeatedly. 2) Repeatedly extend the SSB pattern.

[0066] For larger subcarrier spacing (SSB SCS), if FR2 is used, one SSB pattern (64 SSBs) occupies only a small portion of the entire 5 ms period, so the same SSB pattern can be transmitted once or several times within the 5 ms period to enhance coverage by repetition in the time domain, and additional timing information is required. For example, In case A, {4,8,16,20}+28*n, and n=0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18 when F>6GHz. This sequence is called sequence 1. After completing the transmission of sequence 1, a certain time interval is defined in advance or configured by the base station to transmit sequence 2. The time interval may be predefined in the protocol or predefined with different values ​​based on the frequency domain position of the sync rater. The sequence 2 and sequence 1 are completely the same except for the different time domain positions. For example, n=19,20,21,22,24,25,26,27,29,30,31,32,34,35,36,37. It should be noted that the starting value of n may be different. Then, joint decoding of multiple SSBs is performed to enhance the coverage enhancement of SSB. In case B, {8,12,16,20,32,36,40,44}+56*n, where n=0,1,2,3,5,6,7,8 when F>6GHz. This sequence is called sequence 1. It is predefined or configured by the base station to transmit sequence 2 after a certain time interval after completing transmission of sequence 1. The time interval may be predefined in the protocol or predefined with different values ​​based on the frequency domain position of the sync rater. The sequence 2 and sequence 1 are completely the same except for the time domain position. For example, n=9,10,11,12,14,15,16,17. It should be noted that the starting value of n may be different.

[0067] In a specific application scenario of the embodiment of the present application, for consecutive SSBs whose time intervals or SSB indices satisfy a predetermined relationship, multiple consecutive SSBs can be merged and repeatedly transmitted and received in the time domain, and jointly decoded to enhance the coverage of the SSBs. As shown in Figure 10, joint decoding is performed by SSB1 and SSB2 in T1 and SSB1 and SSB2 in T2.

[0068] Alternatively, the predetermined relationship in the present embodiment may be a predefined relationship or a predetermined relationship determined based on the frequency domain position of the synchronization raster.

[0069] Optionally, the predetermined relationship in the embodiment of the present application is: 1) A time domain or frequency domain positional relationship between a primary synchronization signal PSS and a secondary synchronization signal SSS; 2) The phase difference or cyclic shift between the PSS and SSS, 3) a sequence of PSS and / or SSS; 4) A phase or cyclic shift of the physical broadcast channel-demodulation reference signal PBCH-DMRS; and 5) a master system information block MIB or a system information block SIB; 6) a radio resource control (RRC) message.

[0070] It should be noted that in addition to individually transmitting or receiving an SSB having a target cyclic prefix, and transmitting and receiving the same SSB in the time domain and / or frequency domain, it is also possible to repeatedly transmit and receive an SSB having a target cyclic prefix in the frequency domain, or repeatedly transmit and receive an SSB having a target cyclic prefix in the time domain.

[0071] It can be seen from the above that in the embodiment of the present application, the network side device can send an SSB with a target extended cyclic prefix at a predetermined frequency domain position, or send multiple identical SSBs. Different types of extended cyclic prefixes can provide better coverage by suppressing inter-symbol interference and inter-carrier frequency interference caused by multipath delay, so that the first SSB with the target cyclic prefix can be received at a predetermined frequency domain position at a longer coverage distance, and the terminal side can accordingly receive the SSB at a longer distance, thus realizing enhanced SSB coverage.

[0072] Furthermore, since multiple identical SSBs are transmitted at a specific frequency domain position, this is equivalent to an increase in one or more signals for the base station. For example, transmitting two identical SSBs together is equivalent to two powers being superimposed, so that the coverage distance of the SSBs becomes longer than the transmission distance of a single SSB. Accordingly, the terminal side can receive the multiple identical SSBs at a longer distance, thereby realizing enhanced SSB coverage.

[0073] It should be noted that the processing method of the synchronization signal block provided in the embodiments of the present application may be executed by a processing device of the synchronization signal block, or by a control module within the processing device of the synchronization signal block for executing the processing method of loading a synchronization signal.

[0074] Please refer to FIG. 11. FIG. 11 is a structural schematic diagram of a synchronization signal block processing device according to an embodiment of the present application. The device is applied to a terminal side. As shown in FIG. 11, the device includes: A detection module 1102 for detecting a synchronization signal block SSB at a predetermined frequency domain position to obtain a first SSB, the first SSB including an SSB having a target extended cyclic prefix, at least one of a plurality of the same SSBs; and a decoding module 1104 for decoding the first SSB.

[0075] Optionally, the target extended cyclic prefix in the embodiment of the present application includes at least one of the extended cyclic prefixes ECP, ECP-1, and ECP-2.

[0076] Optionally, the cyclic prefixes of the same SSBs according to the embodiment of the present application include one of a target extended cyclic prefix and a normal cyclic prefix.

[0077] Optionally, the predetermined frequency domain locations in the embodiments of the present application are one or more frequency domain locations in a synchronous raster, or one or more frequency domain locations in an asynchronous raster, or one or more frequency domain locations in a combination of synchronous and asynchronous rasters.

[0078] Alternatively, the predetermined frequency domain positions in the embodiments of the present application are multiple frequency domain positions corresponding to the same time domain in multiple synchronous and / or asynchronous rasters, or the predetermined frequency domain positions are multiple frequency domain positions in a target time domain in multiple periods, the multiple periods being multiple periods within multiple synchronous and / or asynchronous rasters.

[0079] Optionally, the predetermined frequency domain location in the embodiment of the present application is a frequency domain location corresponding to a first set of time domain locations, and the SSBs corresponding to the first set of time domain locations include at least one of SSBs with consecutive indices, SSBs whose time intervals or SSB indices satisfy a predetermined relationship.

[0080] The SSBs whose time intervals or SSB indices satisfy a predetermined relationship include consecutive SSBs or non-consecutive SSBs whose time intervals or SSB indices satisfy a predetermined relationship.

[0081] Please refer to FIG. 12, which is a structural schematic diagram of a synchronization signal block processing device according to an embodiment of the present application. The device is applied to a base station side. As shown in FIG. 12, the device includes: The transmitter 1202 includes a transmission module for transmitting a first synchronization signal block SSB at a predetermined frequency domain position, the first SSB including an SSB having a target extended cyclic prefix, at least one of a plurality of identical SSBs.

[0082] Optionally, the target extended cyclic prefix in the embodiment of the present application includes at least one of the extended cyclic prefixes ECP, ECP-1, and ECP-2.

[0083] Optionally, the cyclic prefixes of the same SSBs according to the embodiment of the present application include one of a target extended cyclic prefix and a normal cyclic prefix.

[0084] Optionally, the predetermined frequency domain locations in the embodiments of the present application are one or more frequency domain locations in a synchronous raster, or one or more frequency domain locations in an asynchronous raster, or one or more frequency domain locations in a combination of synchronous and asynchronous rasters.

[0085] Alternatively, the predetermined frequency domain positions in the embodiments of the present application are multiple frequency domain positions corresponding to the same time domain in multiple synchronous and / or asynchronous rasters, or the predetermined frequency domain positions are multiple frequency domain positions in a target time domain in multiple periods, the multiple periods being multiple periods within multiple synchronous and / or asynchronous rasters.

[0086] Optionally, the predetermined frequency domain location in the embodiment of the present application is a frequency domain location corresponding to a first set of time domain locations, and the SSBs corresponding to the first set of time domain locations include at least one of SSBs with consecutive indices and SSBs whose time intervals or SSB indices satisfy a predetermined relationship. The SSBs whose time intervals or SSB indices satisfy a predetermined relationship include consecutive SSBs or non-consecutive SSBs whose time intervals or SSB indices satisfy a predetermined relationship.

[0087] It should be noted that the synchronization signal processing device applied to the terminal side in the embodiment of the present application may be a device, or may be a component, integrated circuit, or chip in the terminal. The device may be a mobile communication device or a non-mobile communication device. For example, the mobile communication device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle communication device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and the non-mobile communication device may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine, or a kiosk terminal, and the embodiment of the present application is not specifically limited.

[0088] In addition, the processing device of the synchronization signal block in the embodiment of the present application applied to the terminal side in the embodiment of the present application may be a device having an operating system, which may be the Android operating system, the IOS operating system, or other possible operating systems, and is not specifically limited in the embodiment of the present application.

[0089] It should be noted that the synchronization signal block processing device applied to the base station side provided in the embodiment of the present application can realize each process in the method embodiment of Figure 4, and in order to avoid duplication, the description will be omitted here.

[0090] The processing device of the synchronization signal block applied to the terminal side provided in the embodiment of the present application can realize each process in the method embodiment of FIG. 5, and the description thereof will be omitted here to avoid duplication.

[0091] Optionally, the embodiment of the present application includes a processor 1310, a memory 1309, and a program or instruction stored in the memory 1309 and executable on the processor 1310, which, when executed by the processor 1310, further provides a communication device that realizes each process of the embodiment of the synchronization signal block processing method applied to the base station side or the terminal side described above, and can achieve technical effects, and in order to avoid duplication, description will be omitted here.

[0092] It should be noted that the communication devices in the embodiments of the present application include the above-mentioned mobile communication devices and non-mobile communication devices.

[0093] FIG. 13 is a schematic diagram of the hardware structure of a communication device that realizes an embodiment of the present application.

[0094] The communication device 1300 includes components such as, but not limited to, a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309, and a processor 1310.

[0095] Those skilled in the art can understand that the communication device 1300 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 1310 by a power management system, which may further realize functions such as charge / discharge management and power consumption management. The communication device structure shown in Fig. 13 is not intended to limit the communication device, and the communication device may include more or fewer components than those shown, or a combination of some components, or a different component arrangement, and the description thereof will be omitted here.

[0096] When the communication device is a terminal side communication device, the high frequency unit 1301 is used to detect a synchronization signal block SSB at a predetermined frequency domain position and obtain a first SSB, the first SSB including an SSB having a target extended cyclic prefix, at least one of a plurality of identical SSBs.

[0097] The processor 1310 is used to decode the first SSB.

[0098] When the communication device is a base station side communication device, the high frequency unit 1301 is used to transmit a first synchronization signal block SSB at a predetermined frequency domain position, and the first SSB includes an SSB having a target extended cyclic prefix ECP, at least one of a plurality of identical SSBs.

[0099] Optionally, the target extended cyclic prefix includes at least one of the extended cyclic prefixes ECP, ECP-1, and ECP-2.

[0100] Optionally, the cyclic prefixes of the multiple same SSBs include one of an extended cyclic prefix ECP and a normal cyclic prefix NCP.

[0101] Optionally, the predetermined frequency domain locations are one or more frequency domain locations in a synchronous raster, or one or more frequency domain locations in an asynchronous raster, or one or more frequency domain locations in a combination of synchronous and asynchronous rasters.

[0102] Alternatively, the predetermined frequency domain locations are multiple frequency domain locations corresponding to the same time domain in multiple synchronous and / or asynchronous rasters, or the predetermined frequency domain locations are multiple frequency domain locations in a target time domain in multiple periods, the multiple periods being multiple periods within multiple synchronous and / or asynchronous rasters.

[0103] Optionally, the predetermined frequency domain locations are frequency domain locations corresponding to a first set of time domain locations, and the SSBs corresponding to the first set of time domain locations include at least one of SSBs with consecutive indices and SSBs whose time intervals or SSB indices satisfy a predetermined relationship. The SSBs whose time intervals or SSB indices satisfy a predetermined relationship include consecutive SSBs or non-consecutive SSBs whose time intervals or SSB indices satisfy a predetermined relationship.

[0104] Optionally, the predetermined relationship is a predefined predetermined relationship or a predetermined relationship determined based on a frequency domain position of a sync raster.

[0105] Optionally, the predetermined relationship is constituted by at least one of a time domain or frequency domain position relationship between a primary synchronization signal PSS and a secondary synchronization signal SSS, a phase difference or cyclic shift between PSS and SSS, a sequence of PSS and / or SSS, a phase or cyclic shift of a physical broadcast channel-demodulation reference signal PBCH-DMRS, a master system information block MIB or a system information block SIB, and a radio resource control RRC message.

[0106] An embodiment of the present application further provides a readable storage medium storing a program or instruction that, when executed by a processor, realizes each process of the embodiment of the above-mentioned synchronization signal block processing method, and can achieve a technical effect, and in order to avoid repetition, a description will be omitted here.

[0107] The processor is the processor in the communication device according to the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0108] An embodiment of the present application further provides a chip including a processor and a communication interface, the communication interface and the processor are coupled to each other, and the processor executes a program or instruction to realize each process of the embodiment of the method for processing the synchronization signal block, and can achieve technical effects, and in order to avoid duplication, the description will be omitted here.

[0109] It should be understood that the chips referred to in the embodiments of the present application may be referred to as system level chips, system chips, chip systems, or systems on chips.

[0110] It is understood that the embodiments described in this disclosure can be realized by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware realization, the modules, units, sub-modules, sub-units, etc. can be realized in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), common processor, controller, microcontroller, microprocessor, other electronic unit, or combination thereof for performing the functions described herein.

[0111] It should be noted that in this specification, the terms "comprise", "consist of" or any other variants are intended to include a non-exclusive inclusion, whereby a process, method, article or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly stated or inherent to such process, method, article or apparatus. Unless otherwise specified, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article or apparatus that includes the element. It should also be noted that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions substantially simultaneously or in the reverse order depending on such functions, for example, the described method may be performed in a different order than described, and further steps may be added, omitted or combined. Also, features described with reference to any example may be combined in other examples.

[0112] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solution of the present application can be substantially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions that cause a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0113] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. Detecting a synchronization signal block (SSB) at a predetermined frequency domain position to obtain a first SSB, the first SSB including an SSB having a target extended cyclic prefix, the predetermined frequency domain position being a frequency domain position corresponding to a first set of time domain positions, the SSBs corresponding to the first set of time domain positions including at least one of SSBs with consecutive indexes, SSBs whose time intervals or SSB indexes satisfy a predetermined relationship, and the SSBs whose time intervals or SSB indexes satisfy the predetermined relationship are consecutive SSBs or non-consecutive SSBs; and decoding the first SSB; A method for processing a synchronization signal block, wherein the predetermined frequency domain locations are one or more frequency domain locations in a synchronous raster, or one or more frequency domain locations in an asynchronous raster, or one or more frequency domain locations in a combination of synchronous and asynchronous rasters.

2. the predetermined frequency domain positions are a plurality of frequency domain positions corresponding to the same time region in a plurality of synchronous and / or asynchronous rasters, or The method of claim 1 , wherein the predetermined frequency domain locations are multiple frequency domain locations in a target time domain in multiple periods, the multiple periods being multiple periods within multiple synchronous and / or asynchronous rasters.

3. The method of claim 2 , wherein the predetermined relationship is a predefined relationship or a predetermined relationship determined based on a frequency domain position of a synchronization raster.

4. The step of decoding the first SSB further comprises:

2. The method of claim 1, comprising performing joint decoding on a plurality of SSBs having a target cyclic prefix.

5. The method of claim 1 , wherein the first SSB further comprises a plurality of identical SSBs.

6. The method includes transmitting a first synchronization signal block (SSB) at a predetermined frequency domain location, the first SSB including an SSB having a target extended cyclic prefix (ECP), the predetermined frequency domain location being a frequency domain location corresponding to a first set of time domain locations, the SSBs corresponding to the first set of time domain locations including at least one of SSBs with consecutive indices, SSBs whose time intervals or SSB indices satisfy a predetermined relationship, and the SSBs whose time intervals or SSB indices satisfy a predetermined relationship are consecutive SSBs or non-consecutive SSBs; A method for processing a synchronization signal block, wherein the predetermined frequency domain locations are one or more frequency domain locations in a synchronous raster, or one or more frequency domain locations in an asynchronous raster, or one or more frequency domain locations in a combination of synchronous and asynchronous rasters.

7. the predetermined frequency domain positions are a plurality of frequency domain positions corresponding to the same time region in a plurality of synchronous and / or asynchronous rasters, or The method of claim 6 , wherein the predetermined frequency domain locations are a plurality of frequency domain locations in a target time domain in a plurality of periods, the plurality of periods being a plurality of periods within a plurality of synchronous and / or asynchronous rasters.

8. The method of claim 7 , wherein the predetermined relationship is a predefined relationship or a predetermined relationship determined based on a frequency domain position of a synchronization raster.

9. The method of claim 6 , wherein the first SSB further comprises a plurality of identical SSBs.

10. A communications device comprising a processor, a memory, and a program or instructions stored in the memory and executable on the processor, the program or instructions implementing the steps of the synchronization signal block processing method according to any one of claims 1 to 5 when executed by the processor.

11. A communications device comprising a processor, a memory, and a program or instructions stored in the memory and executable on the processor, the program or instructions implementing the steps of the synchronization signal block processing method according to any one of claims 6 to 9 when executed by the processor.

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