WO2024067369A1

WO2024067369A1 - Signal processing method and apparatus, and device

Info

Publication number: WO2024067369A1
Application number: PCT/CN2023/120519
Authority: WO
Inventors: 陈咪咪; 丁昱
Original assignee: 展讯通信（上海）有限公司
Priority date: 2022-09-27
Filing date: 2023-09-21
Publication date: 2024-04-04
Also published as: CN117835422A

Abstract

Provided in the present application are a signal processing method and apparatus, and a device. The method comprises: in an unlicensed frequency band, a terminal device determining a plurality of interlace structures according to a bandwidth and a subcarrier spacing; and according to the interlace structures and at least one group of consecutive physical resource blocks (PRBs), determining a frequency-domain resource which corresponds to a sidelink synchronization signal block (S-SSB). In this way, by means of determining a frequency-domain resource of an S-SSB by means of interlace structures and consecutive PRBs, the occupied channel bandwidth (OCB) of the S-SSB can be increased, such that requirements of OCB and PSD in an unlicensed frequency band are met, thereby ensuring normal sending of a signal.

Description

Signal processing method, device and apparatus

This application claims priority to the Chinese patent application filed with the China Patent Office on September 27, 2022, with application number 202211180023.6 and application name “Signal processing methods, devices and equipment”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of communications, and in particular to a signal processing method, apparatus and device.

Background technique

With the continuous development of the fifth generation mobile communication technology (5G), due to the scarcity of authorized spectrum, unlicensed spectrum carriers can often be used to assist authorized spectrum carrier communications in communication technology, which can increase the available bandwidth, improve spectrum utilization and data transmission rate to a certain extent.

However, according to the regulations of the European Telecommunications Standards Institute (ETSI), communications in unlicensed frequency bands need to meet the requirements of Occupied Channel Bandwidth (OCB) and Power Spectrum Density (PSD).

In the related technology, the sidelink in the Vehicle to Everything (V2X) system usually needs to send a sidelink synchronization information block (Sidelink SS or PSBCH block, S-SSB). The S-SSB signal occupies a fixed number of physical resource blocks (PRB) in the frequency domain.

When the V2X system operates in an unlicensed frequency band, that is, in a Sidelink-Unlicensed (SL-U) system, the design of S-SSB in the related art cannot meet the actual requirements of OCB and PSD, and cannot ensure the normal transmission of signals.

Summary of the invention

The present application provides a signal processing method, apparatus and device to meet the actual needs of OCB and PSD and ensure the normal transmission of signals.

In a first aspect, an embodiment of the present application provides a signal processing method, including:

In unlicensed frequency bands, multiple interlace structures are determined based on bandwidth and subcarrier spacing.

According to the interlace structure and at least one group of continuous physical resource blocks PRB, the frequency domain resources corresponding to the direct synchronization information block S-SSB are determined.

In a possible implementation, the frequency domain resources corresponding to the S-SSB include a physical resource block index corresponding to the S-SSB.

In a possible implementation, the physical resource block index corresponding to the S-SSB is the union of the at least one group of consecutive PRB indices and the PRB index of the interlace structure.

In a possible implementation, the physical resource block index corresponding to the S-SSB includes a group of consecutive PRB indexes.

In a possible implementation manner, the group of continuous PRBs is located in the middle of the bandwidth in the frequency domain; and the number of the interlace structure is at least one.

In a possible implementation, the physical resource block index corresponding to the S-SSB includes indexes of two groups of consecutive PRBs.

In a possible implementation manner, the two groups of continuous PRBs are respectively located at two ends of a bandwidth in the frequency domain; and the number of the interlace structure is at least one.

In a possible implementation manner, the group of consecutive PRBs includes a first number of PRBs; and each of the interlace structures includes a second number of PRBs.

In a possible implementation, the at least one group of continuous PRBs carries the S-SSB; and the PRBs of the interlace structure carry useless signals or the S-SSB.

In a second aspect, an embodiment of the present application provides a signal processing device, including:

A first determination module is used to determine multiple interlace structures according to bandwidth and subcarrier spacing in an unlicensed frequency band;

The second determination module is used to determine the frequency domain resources corresponding to the direct synchronization information block S-SSB according to the interlace structure and at least one group of continuous physical resource blocks PRB.

In a fourth aspect, an embodiment of the present application provides a signal processing device, including: a processor and a memory;

The memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory to implement the method as described in any one of the first aspects.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, which, when executed, are used to implement the method described in any one of the first aspects.

In a sixth aspect, an embodiment of the present application provides a computer program product, including a computer program, which implements the method described in any one of the first aspects when executed.

In a seventh aspect, an embodiment of the present application provides a chip having a computer program stored thereon, and when the computer program is executed by the chip, the method as described in any one of the first aspects is implemented.

In an eighth aspect, an embodiment of the present application provides a chip module, on which a computer program is stored. When the computer program is executed by the chip module, the method described in any one of the first aspects is implemented.

The signal processing method, apparatus and device provided in the embodiment of the present application, the terminal device determines multiple interlace structures in the unlicensed frequency band according to the bandwidth and subcarrier spacing; and determines the frequency domain resources corresponding to the direct synchronization information block S-SSB according to the interlace structure and at least one group of continuous physical resource blocks PRB. In this way, by determining the frequency domain resources of S-SSB through the interlace structure and continuous PRB, the channel bandwidth occupied by S-SSB can be increased, the OCB and PSD requirements of the unlicensed frequency band can be met, and the normal transmission of the signal can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only for reference. For some embodiments of the application, for ordinary technicians in this field, other embodiments can be obtained based on these drawings without any creative work.

FIG1 is a schematic diagram of an application scenario provided by an embodiment of the present application;

FIG2 is a schematic diagram of a time-frequency structure of S-SSB in the related art;

FIG3 is a schematic diagram of a flow chart of a signal processing method provided in an embodiment of the present application;

FIG4 is a schematic diagram of an NR-U interleaving structure according to an embodiment of the present application;

FIG5 is a schematic diagram of a physical resource block index corresponding to an S-SSB according to an embodiment of the present application;

FIG6 is a schematic diagram of a physical resource block index corresponding to another S-SSB according to an embodiment of the present application;

FIG7 is a schematic diagram of a physical resource block index corresponding to another S-SSB according to an embodiment of the present application;

FIG8 is a schematic diagram of a physical resource block index corresponding to another S-SSB according to an embodiment of the present application;

FIG9 is a schematic diagram of the structure of a signal processing device provided in an embodiment of the present application;

FIG10 is a schematic diagram of the structure of a signal processing device provided in an embodiment of the present application.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments and drawings described herein are only used to explain the present application, and are not intended to limit the present application.

FIG1 is a schematic diagram of an application scenario provided by an embodiment of the present application. Referring to FIG1 , it includes a terminal device 101 , a terminal device 102 , and a network device 103 .

The terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc. The terminal device may specifically be a device that provides voice/data connectivity to a user, for example, a handheld device or vehicle-mounted device with a wireless connection function. Specifically, it can be: mobile phone, tablet computer, computer with wireless transceiver function (such as laptop computer, PDA, etc.), mobile Internet device (Mobile Internet Device, MID), virtual reality (Virtual Reality, VR) equipment, augmented reality (Augmented Reality, AR) equipment, wireless terminal in industrial control (Industrial Control), wireless terminal in self-driving (Self Driving), wireless terminal in remote medical (Remote Medical), wireless terminal in smart grid (Smart Grid), wireless terminal in transportation safety (Transportation Safety), wireless terminal in smart city (Smart City), wireless terminal in smart home (Smart Home), cellular phone, cordless phone, Session Initiation Protocol (Session Initiation Protocol, SIP) phone, Wireless Local Loop (Wireless Local Loop, WLL) station, Personal Digital Assistant (PDA), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, vehicle-mounted devices, wearable devices, terminal devices in the fifth-generation mobile communication technology 5G network, or terminal devices in the future evolved public land mobile communication network (PLMN), etc.

Among them, wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

In addition, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. IoT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, narrow band (NB) technology.

In addition, the terminal device may also include sensors such as smart printers, train detectors, and gas stations, and its main functions include collecting data (part of the terminal device), receiving control information and downlink data from the network device, and sending electromagnetic waves to transmit uplink data to the network device. The embodiments of the present application do not limit the specific type or name of the terminal device.

The network device may be any device with wireless transceiver function. The device includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home Evolved Node B, or Home Node B, HNB), Baseband Unit (BBU), Access Point (AP) in Wireless Fidelity (WiFi) system, Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc. It can also be 5G, such as a gNB in a New Radio (NR) system, or a transmission point (TRP or TP), one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or it can also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU).

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include an Active Antenna Unit (AAU). The CU implements some of the gNB functions, and the DU implements some of the gNB functions. For example, the CU is responsible for handling non-real-time protocols and services, and implementing Radio Resource Control (RRC). The DU is responsible for processing the physical layer protocol and real-time services, and realizing the functions of the radio link control (Radio Link Control, RLC) layer, the medium access control (Medium Access Control, MAC) layer and the physical (Physical, PHY) layer. The AAU implements some physical layer processing functions, RF processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, therefore, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or, sent by the DU+AAU. It can be understood that the network device can be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into a network device in the access network (Radio Access Network, RAN), and the CU can also be divided into a network device in the core network (Core Network, CN). The embodiments of the present application do not limit the specific type or name of the network device.

In Fig. 1, a direct link Sidelink is between terminal device 101 and terminal device 102, and an uplink and downlink are between terminal device 102 and network device 103. The embodiment of the present application mainly focuses on signal processing of a direct link in an unlicensed frequency band.

In the direct link SL system, the direct link synchronization information block S-SSB is an information block sent by the transmitting terminal to the receiving terminal during the direct communication process so that the receiving terminal can synchronize with the transmitting terminal. The S-SSB includes the sidelink primary synchronization signal (Sidelink Primary Synchronization Signal, S-PSS), the sidelink secondary synchronization signal (Sidelink Secondary Synchronization Signal, S-SSS) and the physical sidelink broadcast channel (Physical Sidelink Broadcast Channel, PSBCH). The S-SSB signal occupies a time slot in the time domain and occupies 11 consecutive physical resource blocks PRB in the frequency domain.

Exemplarily, FIG2 is a schematic diagram of the time-frequency structure of an S-SSB in the related art. As shown in FIG2, S-SSB occupies a time slot in the time domain, and the time slot includes 14 symbols from 0 to 13. Among them, symbol 0 carries Automatic Gain Control (AGC), symbols 1 and 2 carry S-PSS, symbols 3 and 4 carry S-SSS, symbols 6 to 12 carry PSBCH and demodulation reference signal (DMRS), and symbol 13 carries the time interval (Gap). S-SSB occupies 11 resource blocks (RBs) in the frequency domain, that is, 11 RBs.

When the SL system operates on unlicensed spectrum (frequency band), it is necessary to meet the requirements of unlicensed spectrum in some areas. For unlicensed spectrum within the 5GHz frequency band, according to ETSI regulations, it is necessary to meet the requirements of OCB and PSD. For the OCB requirement, when the terminal device uses the channel for data transmission, the occupied channel bandwidth shall not be less than 80% of the total channel bandwidth.

In the related art, in the SL-U system, since S-SSB usually occupies the middle 11 physical resource blocks in the frequency domain, it cannot meet the requirements of OCB and PSD. Therefore, a new S-SSB design and processing method is urgently needed to meet The requirements of OCB and PSD ensure the normal transmission of signals.

In an embodiment of the present application, the terminal device determines multiple interlace structures in the unlicensed frequency band according to the bandwidth and the subcarrier spacing; and determines the frequency domain resources corresponding to the direct synchronization information block S-SSB according to the interlace structure and at least one group of continuous physical resource blocks PRB. In this way, by determining the frequency domain resources of S-SSB through the interlace structure and continuous PRB, the channel bandwidth occupied by S-SSB can be increased, the OCB and PSD requirements of the unlicensed frequency band can be met, and the normal transmission of the signal can be ensured.

The scheme shown in the present application is described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or in combination with each other, and the same or similar contents will not be described repeatedly in different embodiments.

The signal processing process is described below in conjunction with the embodiment shown in FIG. 3 .

FIG3 is a flow chart of a signal processing method provided by an embodiment of the present application. Referring to FIG3 , the method may include:

S301. In an unlicensed frequency band, multiple interlace structures are determined according to bandwidth and subcarrier spacing.

In the embodiment of the present application, bandwidth may refer to the system bandwidth of the current through link. Subcarrier spacing may refer to the spacing between subcarriers. The 5G NR system supports multiple types of subcarrier spacing (SCS), which may include 15kHZ, 30kHZ, 60kHZ, 120kHZ, 240kHZ, etc. An interlace structure may be a unit of resource allocation. An interlace structure may include multiple non-continuous PRBs, and multiple interlace structures are intertwined with each other.

Exemplarily, taking New Radio-based Access to Unlicensed spectrum (NR-U) as an example, FIG4 shows a schematic diagram of an interleaved structure of NR-U in an embodiment of the present application. In the resource pool shown in FIG4, there is one time slot in the time domain. In the frequency domain, the resource allocation granularity is a sub-channel. A sub-channel can be composed of one or more continuous PRBs. The resource pool shown in FIG4 has a total of 20 PRBs in the frequency domain, and the index of each PRB can be 0 to 19 from low to high. At this time, the 20 PRBs can be divided into 5 interleaved structures, namely interlace 0, interlace 1, interlace 2, interlace 3 and interlace 4, and each interleaved structure includes 4 non-continuous PRBs. Specifically, interlace 0 includes 4 PRBs with indexes of 0, 5, 10, and 15; interlace 1 includes 4 PRBs with indexes of 1, 6, 11, and 16, and so on.

In this step, based on the bandwidth and subcarrier spacing, the terminal device can determine the multiple interleaving structures included in the SL-U system of the direct link in the unlicensed frequency band. In this way, by determining the interleaving structure and designing the S-SSB signal based on the interleaving structure, the channel bandwidth ratio of the S-SSB signal can be increased, thereby meeting the requirements of OCB and PSD.

For example, assuming that the bandwidth is 20 megabits (M), the subcarrier spacing is 15 kHz, there are 106 physical resource blocks in the frequency domain, and the PRB indexes are 0 to 105 in descending order. The terminal device can divide these 106 physical resource blocks into To 10 interlace structures. Among them, in interlace 0 to interlace 5, each interlace structure includes 11 physical resource blocks, and in interlace 6 to interlace 9, each interlace structure includes 10 physical resource blocks. Of course, when the bandwidth is different and/or the subcarrier spacing is different, the division result of the interlace structure is also different, and the embodiment of the present application is not limited to this.

S302. Determine the frequency domain resources corresponding to the direct synchronization information block S-SSB according to the interlace structure and at least one group of continuous physical resource blocks PRB.

In the embodiment of the present application, at least one group of continuous PRBs may refer to continuous physical resource blocks required for S-SSB signals. Frequency domain resources may refer to transmission resources in the frequency domain corresponding to S-SSB, which may specifically include physical resource block indexes in the frequency domain, etc. Of course, they may also be represented in other forms or contents, which are not limited in the embodiment of the present application.

In this step, after determining multiple interleaving structures, the terminal device can select one or more interleaving structures, and at the same time select one or more groups of continuous physical resource blocks to determine the frequency domain resources required for S-SSB. This can increase the channel bandwidth ratio of the S-SSB signal and meet the requirements of OCB and PSD.

In the signal processing method provided in the embodiment of the present application, the terminal device determines multiple interlace structures in the unlicensed frequency band according to the bandwidth and the subcarrier spacing; and determines the frequency domain resources corresponding to the direct synchronization information block S-SSB according to the interlace structure and at least one group of continuous physical resource blocks PRB. In this way, by determining the frequency domain resources of S-SSB through the interlace structure and continuous PRB, the bandwidth occupied by S-SSB can be increased, the OCB and PSD requirements of the unlicensed frequency band can be met, and the normal transmission of the signal can be ensured.

In a possible implementation, the physical resource block index corresponding to the S-SSB is the union of at least one set of consecutive PRB indices and a PRB index of an interlace structure.

In an embodiment of the present application, the frequency domain resource of the S-SSB may specifically refer to the physical resource block index corresponding to the S-SSB, that is, the index of the physical resource block occupied by the S-SSB. The physical resource block index corresponding to the S-SSB may consist of two parts, one part is the continuous PRB index required for the S-SSB signal, and the other part is one or more interlaced structured PRB indexes.

In a possible implementation manner, a group of continuous PRBs is located in the middle of the bandwidth in the frequency domain; and the number of the interlace structure is at least one.

In the embodiment of the present application, the continuous PRBs included in the physical resource block index corresponding to the S-SSB can be a group located in the middle of the bandwidth. At this time, the terminal device can select one or more interlace structures and a group of continuous PRBs located in the middle to obtain the physical resource block index occupied by the S-SSB. PRBs of the S-SSB are mapped, and at least one PRB with an interleaved structure is additionally mapped. The physical resource block index occupied by the S-SSB is determined by taking the union method, which can increase the channel bandwidth ratio of the S-SSB and meet the requirements of OCB and PSD.

Exemplarily, taking the bandwidth as 20M and the subcarrier spacing as 15kHZ as an example, FIG5 is a schematic diagram of the physical resource block index corresponding to an S-SSB in an embodiment of the present application. As shown in FIG5, the indexes of a group of continuous PRBs (diagonal filled rectangles) located in the middle of the bandwidth are 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, and 58, respectively. These 11 continuous PRBs can be used to carry S-SSB signals. At this time, the terminal device selects another interlaced structure, which is interlace 0 (pure black filled rectangle) in FIG5. The indexes of the interlaced structure interlace 0 are 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100, respectively. The terminal device takes the union of the PRB index of the interleaved structure and the index of a group of continuous PRBs to obtain the physical resource block index corresponding to the S-SSB signal, that is, the physical resource block index corresponding to the S-SSB of SL-U is 0, 10, 20, 30, 40, 48, 49, 50, ..., 56, 57, 58, 60, 70, 80, 90, 100.

Exemplarily, taking the bandwidth as 20M and the subcarrier spacing as 15kHZ as an example, FIG6 is a schematic diagram of the physical resource block index corresponding to another S-SSB in an embodiment of the present application. As shown in FIG6, the indexes of a group of continuous PRBs (diagonal filled rectangles) located in the middle of the bandwidth are 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, and 58, respectively. These 11 continuous PRBs can be used to carry S-SSB signals. At this time, the terminal device selects another interlaced structure, which is interlace 2 (pure black filled rectangle) in FIG6. The indexes of the interlaced structure interlace 2 are 2, 12, 22, 32, 42, 52, 62, 72, 82, 92, and 102, respectively. The terminal device takes the union of the PRB index of the interleaved structure and the index of a group of continuous PRBs to obtain the physical resource block index corresponding to the S-SSB signal, that is, the physical resource block index corresponding to the S-SSB of SL-U is 2, 12, 22, 32, 42, 48, 49, 50, …, 56, 57, 58, 62, 72, 82, 92, 102.

It should be understood that in the examples of Figures 5 and 6, the terminal device respectively selects an interleaving structure and a group of continuous PRBs to obtain the PRB index corresponding to the S-SSB; the terminal device may also select other interleaving structures, or may also select two or more interleaving structures, and then take the union with a group of continuous PRBs to obtain the PRB index corresponding to the S-SSB. The embodiments of the present application are not limited to this.

In a possible implementation manner, two groups of consecutive PRBs are located at two ends of a bandwidth in the frequency domain; and the number of the interlace structure is at least one.

In an embodiment of the present application, the continuous PRBs included in the physical resource block index corresponding to the S-SSB may be two groups, respectively located in the middle of the bandwidth, and the content carried by these two groups of continuous PRBs may be repeated. The terminal device can also select one or more interlace structures and take the union of the two groups of continuous PRBs located at both ends to obtain the physical resource block index occupied by the S-SSB. In this way, the channel bandwidth share of the S-SSB can be increased to meet the requirements of OCB and PSD, and the flexibility of the S-SSB signal design can also be improved.

Exemplarily, taking the bandwidth as 20M and the subcarrier spacing as 15kHZ as an example, FIG7 is a schematic diagram of the physical resource block index corresponding to another S-SSB in an embodiment of the present application. As shown in FIG7, the indexes of the two groups of continuous PRBs (diagonal filled rectangles) at both ends of the bandwidth are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, respectively. At this time, the terminal device selects another interlaced structure, which is interlace 0 (pure black filled rectangle) in FIG7, and the indexes of the interlaced structure interlace 0 are 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, respectively. The terminal device takes the union of the PRB index of the staggered structure and the index of two consecutive PRBs to obtain the physical resource block index corresponding to the S-SSB signal, that is, the physical resource block index corresponding to the S-SSB of SL-U is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105.

Exemplarily, taking the bandwidth as 20M and the subcarrier spacing as 15kHZ as an example, FIG8 is a schematic diagram of the physical resource block index corresponding to another S-SSB in an embodiment of the present application. As shown in FIG8, the indexes of the two groups of consecutive PRBs (diagonal filled rectangles) at both ends of the bandwidth are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105 respectively. At this time, the terminal device selects another interlaced structure, which is interlace 5 (pure black filled rectangle) in FIG8, and the indexes of the interlaced structure interlace 5 are 5, 15, 25, 35, 45, 55, 65, 75, 85, 95, 105 respectively. The terminal device takes the union of the PRB index of the staggered structure and the index of two consecutive PRBs to obtain the physical resource block index corresponding to the S-SSB signal, that is, the physical resource block index corresponding to the S-SSB of SL-U is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 25, 35, 45, 55, 65, 75, 85, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105.

It should be understood that when selecting an interleaving structure, the terminal device may also select two or more; and when the bandwidth is different or the subcarrier spacing is different, the division results of the interleaving structure are also different, and the corresponding PRB indexes are also different. The embodiments of the present application do not limit this.

In a possible implementation manner, a group of consecutive PRBs includes a first number of PRBs; and each interlace structure includes a second number of PRBs.

In a possible implementation manner, at least one group of continuous PRBs carries S-SSBs; and PRBs with an interlace structure carry useless signals or S-SSBs.

In an embodiment of the present application, a group of continuous PRBs may include a first number of physical resource blocks, for example, 11, for carrying S-SSB signals. A second number of physical resource blocks may be included in an interleaved structure, and the second number may be determined based on the bandwidth and the subcarrier spacing, for example, 10 or 11. The physical resource blocks in the interleaved structure may carry useless signals or repeated signals of S-SSB, which is not limited in the embodiment of the present application.

FIG9 is a schematic diagram of the structure of a signal processing device provided in an embodiment of the present application. The processing device 90 may include:

A first determination module 91 is used to determine a plurality of interlace structures according to bandwidth and subcarrier spacing in an unlicensed frequency band;

The second determination module 92 is used to determine the frequency domain resources corresponding to the direct synchronization information block S-SSB according to the interlace structure and at least one group of continuous physical resource blocks PRB.

The signal processing device 90 provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here. The signal processing device 90 can be specifically a chip, a chip module, etc., which is not limited in the embodiment of the present application.

Fig. 10 is a schematic diagram of the structure of a signal processing device provided in an embodiment of the present application. Referring to Fig. 10, the signal processing device 100 may include: a memory 1001 and a processor 1002. Exemplarily, the memory 1001 and the processor 1002 are interconnected via a bus 1003.

The memory 1001 is used to store program instructions;

The processor 1002 is used to execute the program instructions stored in the memory to implement the signal processing method shown in the above embodiment.

The signal processing device shown in the embodiment of FIG10 can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be described in detail here.

An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the above-mentioned signal processing method.

The embodiment of the present application may also provide a computer program product, including a computer program, which can implement the above-mentioned signal processing method when executed by a processor.

An embodiment of the present application provides a chip having a computer program stored thereon. When the computer program is executed by the chip, the above-mentioned signal processing method is implemented.

An embodiment of the present application also provides a chip module, on which a computer program is stored. When the computer program is executed by the chip module, the above-mentioned signal processing method is implemented.

It should be noted that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

It should be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM) and direct RAM bus RAM (DR RAM). It should be noted that when the processor is a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor. It should be noted that the memory described herein is intended to include but is not limited to these and any other suitable types of memory.

It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The modules/units included in the devices and products described in the above embodiments may be software modules/units. The device or product may be applied to or integrated into a chip, a chip module or a terminal device. For example, for each device or product applied to or integrated into a chip, each module or chip contained therein may be implemented in the form of hardware such as circuits, or at least part of the modules or units may be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining modules or units may be implemented in the form of hardware such as circuits.

In the present application, the term "include" and its variations may refer to non-restrictive inclusion; the term "or" and its variations may refer to "and/or". The terms "first", "second", etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In the present application, "plurality" refers to two or more. "And/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B may mean: A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the previously associated objects are in an "or" relationship.

The above are only some embodiments of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

A signal processing method, comprising:

In unlicensed frequency bands, multiple interlace structures are determined based on bandwidth and subcarrier spacing.

According to the interlace structure and at least one group of continuous physical resource blocks PRB, the frequency domain resources corresponding to the direct synchronization information block S-SSB are determined.
The method according to claim 1 is characterized in that the frequency domain resources corresponding to the S-SSB include the physical resource block index corresponding to the S-SSB.
The method according to claim 2 is characterized in that the physical resource block index corresponding to the S-SSB is the union of the at least one set of continuous PRB indexes and the PRB index of the interlace structure.
The method according to claim 3 is characterized in that the physical resource block index corresponding to the S-SSB includes an index of a group of consecutive PRBs.
The method according to claim 4 is characterized in that the group of continuous PRBs is located in the middle of the bandwidth in the frequency domain; and the number of the interlace structure is at least one.
The method according to claim 3 is characterized in that the physical resource block index corresponding to the S-SSB includes indexes of two groups of consecutive PRBs.
The method according to claim 6 is characterized in that the two groups of consecutive PRBs are located at two ends of the bandwidth in the frequency domain; and the number of the interlace structure is at least one.
The method according to any one of claims 1 to 7, characterized in that the group of consecutive PRBs includes a first number of PRBs; and each of the interlace structures includes a second number of PRBs.
The method according to any one of claims 1 to 8 is characterized in that the S-SSB is carried in the at least one group of continuous PRBs; and the PRBs of the interlace structure carry useless signals or the S-SSBs.
A signal processing device, comprising:

A first determination module is used to determine multiple interlace structures according to bandwidth and subcarrier spacing in an unlicensed frequency band;

The second determination module is used to determine the frequency domain resources corresponding to the direct synchronization information block S-SSB according to the interlace structure and at least one group of continuous physical resource blocks PRB.
A signal processing device, characterized in that it comprises: a processor and a memory;

The memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 9.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, which are used to implement the method described in any one of claims 1 to 9 when the computer-executable instructions are executed.
A computer program product, characterized in that it comprises a computer program, and when the computer program is executed, it implements the method according to any one of claims 1 to 9.
A chip, characterized in that a computer program is stored on the chip, and when the computer program is executed by the chip, the method according to any one of claims 1 to 9 is implemented.