Signal transmission method and apparatus, device, medium, and chip

Abstract

The present application relates to the field of wireless communications, and discloses a signal transmission method and apparatus, a device, a medium, and a chip. The method comprises: transmitting a first signal in a first frequency domain resource, the first frequency domain resource corresponding to a first terminal device UE capability set; and transmitting a second signal in a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

Description

Signal transmission methods, devices, equipment, media and chips Technical Field

[0001] This application relates to the field of wireless communication, and in particular to a signal transmission method, apparatus, device, medium, and chip. Background Technology

[0002] As application scenarios become more diverse, the terminal devices within a communication system may possess different capabilities to meet the communication needs of different application scenarios.

[0003] In the presence of terminal devices with diverse capabilities, how network devices can efficiently and flexibly transmit downlink signals is a problem that needs to be considered. Summary of the Invention

[0004] This application provides a signal transmission method, apparatus, device, medium, and chip, the technical solution of which includes at least:

[0005] According to one aspect of the embodiments of this application, a signal transmission method is provided, the method being performed by a network device, the method comprising:

[0006] The first signal is transmitted within the first frequency domain resource, which corresponds to the first terminal device (UE) capability set.

[0007] The second signal is transmitted within the second frequency domain resources, which correspond to the second UE capability set.

[0008] According to another aspect of the embodiments of this application, a signal transmission method is provided, which is executed by a first terminal device. The method includes: receiving a first signal in a first frequency domain resource, and / or receiving a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

[0009] According to another aspect of the embodiments of this application, a signal transmission method is provided, which is executed by a second terminal device. The method includes: receiving a second signal in a second frequency domain resource, wherein the second frequency domain resource corresponds to a second UE capability set.

[0010] According to one aspect of the embodiments of this application, a signal transmission apparatus is provided, the apparatus comprising: a transmission module, configured to transmit a first signal in a first frequency domain resource and transmit a second signal in a second frequency domain resource, wherein the first frequency domain resource corresponds to a first terminal device (UE) capability set and the second frequency domain resource corresponds to a second UE capability set.

[0011] According to another aspect of the embodiments of this application, a signal transmission apparatus is provided, the apparatus comprising: a receiving module, configured to receive a first signal in a first frequency domain resource, and / or receive a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

[0012] According to another aspect of the embodiments of this application, a signal transmission apparatus is provided, the apparatus comprising: a receiving module, configured to receive a second signal within a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

[0013] According to another aspect of the embodiments of this application, a network device is provided, the network device comprising: a processor; a transmitter connected to the processor; and a memory for storing executable instructions of the processor; wherein the transmitter is configured to transmit a first signal in a first frequency domain resource and a second signal in a second frequency domain resource, the first frequency domain resource corresponding to a first terminal device (UE) capability set, and the second frequency domain resource corresponding to a second UE capability set.

[0014] According to one aspect of the embodiments of this application, a terminal device is provided, the terminal device comprising: a processor; a receiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the receiver is configured to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

[0015] According to one aspect of the embodiments of this application, a terminal device is provided, the terminal device comprising: a receiver configured to receive a second signal in a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

[0016] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided, which stores at least one program that is loaded and executed by a processor to implement the signal transmission method as described in the foregoing aspects.

[0017] According to one aspect of the embodiments of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, a processor retrieving the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to implement the signal transmission method as described in the above aspects.

[0018] According to one aspect of the embodiments of this application, a chip is provided, the chip including programmable logic circuitry and / or at least a program, the chip being executed to implement the signal transmission method as described in the above aspects.

[0019] The technical solutions provided in this application embodiment may include the following beneficial effects:

[0020] Supporting network devices to transmit signals in different frequency domain resources corresponding to different capability sets helps UEs with different capabilities to rationally use the corresponding frequency domain resources to obtain downlink signals, thereby improving the resource utilization efficiency and transmission efficiency within the communication system. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 shows a schematic diagram of a wireless communication system provided in an exemplary embodiment of this application;

[0023] Figure 2 shows a flowchart illustrating a signal transmission method provided in an exemplary embodiment of this application;

[0024] Figure 3 shows a flowchart illustrating a signal transmission method provided in an exemplary embodiment of this application;

[0025] Figure 4 shows a flowchart illustrating a signal transmission method provided in an exemplary embodiment of this application;

[0026] Figure 5 shows a schematic diagram of the structure of an SSB provided in an exemplary embodiment of this application;

[0027] Figure 6 illustrates a schematic diagram of the transmission content and encoding process of PBCH provided in an exemplary embodiment of this application;

[0028] Figure 7 illustrates a transmission schematic diagram of an SSB burst set provided in an exemplary embodiment of this application;

[0029] Figure 8 shows a flowchart of a signal transmission method provided in an exemplary embodiment of this application;

[0030] Figure 9 illustrates a schematic diagram of the capability set provided by an exemplary embodiment of this application;

[0031] Figure 10 shows a schematic diagram of a signal transmission method provided in an exemplary embodiment of this application;

[0032] Figure 11 shows a schematic diagram of a signal transmission method provided in an exemplary embodiment of this application;

[0033] Figure 12 shows a schematic diagram of a signal transmission method provided in an exemplary embodiment of this application;

[0034] Figure 13 shows a schematic diagram of a signal transmission method provided in an exemplary embodiment of this application;

[0035] Figure 14 shows a schematic diagram of a signal transmission method provided in an exemplary embodiment of this application;

[0036] Figure 15 shows a schematic diagram of a signal transmission method provided in an exemplary embodiment of this application;

[0037] Figure 16 shows a schematic diagram of a signal transmission method provided in an exemplary embodiment of this application;

[0038] Figure 17 shows a structural block diagram of a signal transmission device provided in an exemplary embodiment of this application;

[0039] Figure 18 shows a structural block diagram of a signal transmission device provided in an exemplary embodiment of this application;

[0040] Figure 19 shows a structural block diagram of a signal transmission device provided in an exemplary embodiment of this application;

[0041] Figure 20 shows a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail here, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0043] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "in the case of," "when," or "in response to determination." In this specification, when expressing the meaning of Boolean values, "0" is expressed as "first meaning" and "1" as "second meaning." Without loss of generality, those skilled in the art will understand that the meanings they represent can be interchanged, i.e., "1" represents "first meaning" and "0" represents "second meaning."

[0045] Figure 1 illustrates a schematic diagram of a wireless communication system 100 provided in an exemplary embodiment of this application. The wireless communication system 100 includes terminal devices with terminal devices, or terminal devices with network devices, or stations (STAs) with stations; this application does not limit the specific types of devices. Figure 1 uses the example of a wireless communication system 100 including network devices 110 and terminal devices 120. The number of network devices 110 can be one or more, and the number of terminal devices 120 can be one or more.

[0046] Network device 110 supports wireless communication functions, including but not limited to: Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), Radio Network Controller (RNC), Base Station (BS), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Evolved Node B (or Home Node B, HNB), Baseband Unit (BBU), Distributed Unit (DU), Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP), Transmission and Reception Point (TRP), Antenna Panel, Router, etc.

[0047] Terminal equipment 120, also known as user equipment (UE), includes, but is not limited to: mobile phones, tablets, e-book readers, laptops, desktop computers, televisions, virtual reality (VR) devices, augmented reality (AR) devices, mixed reality (MR) devices, extended reality (XR) devices, remote terminals, set-top boxes, vehicle communication equipment, handheld devices, wearable devices, wireless devices in industrial control, wireless devices in self-driving, wireless devices in remote medical care, wireless devices in smart grids, wireless devices in transportation safety, wireless devices in smart cities, wireless devices in smart homes (such as smart cameras, smart remote controls, smart water and electricity meters, etc.), wireless communication chips, application-specific integrated circuits (ASICs), systems-on-chips (SoCs), Internet of Things (IoT) nodes, and vehicle-to-everything (V2X) networks. It can be a node or sensor of a vehicle (IoV), or a computing device with wireless communication capabilities or other processing devices connected to a wireless modem.

[0048] In some embodiments, both network device 110 and terminal device 120 support the 3rd Generation Partnership Project (3GPP) protocol, but are not limited to the 3GPP protocol.

[0049] In some embodiments, the frequency bands supported by the wireless communication system 100 include, but are not limited to: Sub-6GHz bands (e.g., bands in the range of 450MHz-6 GHz), Sub-7GHz bands (e.g., bands in the range of 1 to 7.25GHz such as 2.4GHz, 5GHz, and 6GHz), and millimeter wave (mmWave) bands (e.g., bands in the range of 24.25 to 300GHz such as 26GHz, 28GHz, 39GHz, 45GHz, and 60GHz).

[0050] The technical solutions described in some embodiments of this application can be applied to various communication systems, such as: 6th-Generation (6G) systems, subsequent evolution systems of 6G, NR systems, evolution systems of NR systems, 5th-Generation (5G) systems, Beyond 5th-Generation (B5G) systems, Long Term Evolution (LTE) systems, Advanced Long Term Evolution (LTE-A) systems, LTE-based access to unlicensed spectrum (LTE-U) systems, NR-based access to unlicensed spectrum (NR-U) systems, cellular IoT systems, Wireless Local Area Networks (WLAN) systems, Wireless Fidelity (Wi-Fi) systems, Global System for Mobile Communication (GSM) systems, Code Division Multiple Access (CDMA) systems, and Wideband Code Division Multiple Access (CDMA) systems. Systems such as WCDMA (Wide-accessible communication network), General Packet Radio Service (GPRS), Terrestrial Networks (TN), and Non-Terrestrial Networks (NTN) are included.

[0051] The wireless communication system 100 is applicable to three communication scenarios: the first is the uplink transmission scenario, which refers to the scenario where the terminal device sends signals to the network device; the second is the downlink transmission scenario, which refers to the scenario where the network device sends signals to the terminal device; and the third is the sidelink transmission scenario, which refers to the scenario where the terminal device sends signals to other terminal devices.

[0052] In 3GPP specifications version 15 / 16 (Release 15 / Release 16, R15 / R16), the UEs designed for NR systems support extremely high peak rates. Therefore, the requirements for UE capabilities are also high, mainly reflected in the following aspects.

[0053] The maximum single-carrier bandwidth in an LTE system is 20MHz; larger transmission bandwidths require carrier aggregation (CA) technology. In NR systems, the maximum carrier bandwidth in frequency bands below 6GHz is 100MHz, while the maximum carrier bandwidth in millimeter-wave bands is 400MHz, both significantly greater than the maximum single-carrier bandwidth of LTE systems.

[0054] The NR system requires an even larger multiple input multiple output (MIMO) antenna configuration. The reference configuration for UE antennas in LTE systems is one transmit and two receive, while NR systems require UE antennas with two transmit and four receive frequencies above 2500MHz.

[0055] However, some NR system applications do not require such high processing capacity and speed from the UE. These applications include the Internet of Things (IoT), industrial automation, and wearable devices. In these scenarios, communication hardware needs to be small in size and have low power consumption. Lightweight capability is a characteristic of these types of UEs. Based on this consideration, 3GPP Release 17 research introduced a compact terminal standard with Reduced Capability (Redcap).

[0056] The Compact Terminal standard reduces some of the mandatory UE capabilities specified in the 3GPP R15 / R16 specifications. Corresponding terminal function groups are defined for these capabilities. The Compact Terminal standard also further optimizes terminal identification, access procedures, and power consumption measurement to adapt to relevant application scenarios.

[0057] In designing 5G systems, 3GPP first standardized the Enhanced Mobile Broadband (eMBB) UE, and then further standardized the Redcap UE by removing some UE capabilities. Therefore, the definition of the Redcap UE was inevitably constrained by the already standardized eMBB UE.

[0058] Therefore, when designing future communication systems (such as 6G and its subsequent evolution), it is advisable to introduce two or more UE capability sets (also known as UE function sets) from the outset. These different UE capability sets differ in one or more of the following aspects: supported bandwidth, supported number of antennas, supported modulation and coding scheme (MCS), supported data rate, supported duplex mode, etc. Correspondingly, future communication systems can support two or more types of UEs, such as Type I UE and Type II UE. Type I UE and Type II UE correspond to different UE capability sets; Type I UE is similar to eMBB UE, and Type II UE is similar to Redcap UE.

[0059] This application addresses the situation where there are at least two types of UEs with different capabilities within a communication system, and provides a corresponding design for the transmission of downlink signals.

[0060] Figure 2 shows a flowchart illustrating a signal transmission method provided in an exemplary embodiment of this application, which is applied to the wireless communication system shown in Figure 1. The method is executed by a network device and includes at least some of the following steps:

[0061] Step 220: Transmit a first signal within the first frequency domain resources, which correspond to the first UE capability set; transmit a second signal within the second frequency domain resources, which correspond to the second UE capability set.

[0062] The first frequency domain resource corresponds to the first UE capability set. It can also be understood that the first frequency domain resource is related to the first UE capability set, or that the first frequency domain resource supports the use of UEs corresponding to the first UE capability set, or that UEs with the capabilities of UEs in the first UE capability set can receive and / or transmit signals within the first frequency domain resource.

[0063] The second frequency domain resource corresponds to the second UE capability set. It can also be understood that the second frequency domain resource is related to the second UE capability set, or that the second frequency domain resource supports the use of UEs corresponding to the second UE capability set, or that UEs with the capabilities of UEs in the second UE capability set can receive and / or transmit signals within the second frequency domain resource.

[0064] The first frequency domain resource is represented by a frequency domain range or a frequency domain unit. For example, the first frequency domain resource includes a frequency domain range (e.g., f1 kHz to f2 kHz); or, the first frequency domain resource includes multiple frequency domain ranges, which may be continuous or discontinuous in the frequency domain. Alternatively, the first frequency domain resource includes a single frequency domain unit; or, the first frequency domain resource includes multiple frequency domain units, which may be continuous or discontinuous in the frequency domain.

[0065] The second frequency domain resource is represented by a frequency domain range or a frequency domain unit. For example, the second frequency domain resource includes a frequency domain range (e.g., f3 kHz to f4 kHz); or, the second frequency domain resource includes multiple frequency domain ranges, which may be continuous or discontinuous in the frequency domain. Alternatively, the second frequency domain resource may include a single frequency domain unit; or, the second frequency domain resource may include multiple frequency domain units, which may be continuous or discontinuous in the frequency domain.

[0066] In the embodiments of this application, the frequency domain unit includes one or more of the following: carrier, subband, bandwidth part (BWP), subcarrier, physical resource block (PRB), etc.

[0067] The first frequency domain resource and the second frequency domain resource are different. In some embodiments, the first frequency domain resource and the second frequency domain resource satisfy one or more of the following: the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource; the center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain start position of the second frequency domain resource; the frequency domain end position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the first frequency domain resource and the second frequency domain resource do not overlap in the frequency domain.

[0068] The first UE capability set is different from the second UE capability set, or the first UE capability set and the second UE capability set partially overlap. In some embodiments, the first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set, that is, the second UE capability set is a subset of the first UE capability set.

[0069] In this embodiment of the application, the network device can be implemented as the network device 110 shown in FIG1.

[0070] In summary, the method provided in this application supports network devices to transmit signals in different frequency domain resources corresponding to different capability sets, which helps UEs with different capabilities to reasonably use the corresponding frequency domain resources to obtain downlink signals, thereby improving the resource utilization efficiency and transmission efficiency within the communication system.

[0071] Figure 3 shows a flowchart illustrating a signal transmission method provided in an exemplary embodiment of this application, which is applied to the wireless communication system shown in Figure 1. The method is executed by a first UE and includes at least some of the following steps:

[0072] Step 320: Receive a first signal in the first frequency domain resource, and / or receive a second signal in the second frequency domain resource; wherein the first frequency domain resource corresponds to the first UE capability set, and the second frequency domain resource corresponds to the second UE capability set.

[0073] The first UE corresponds to the first UE capability set, which can also be understood as the first UE supporting the first UE capability set, or as the first UE possessing the UE capabilities in the first UE capability set.

[0074] The first frequency domain resource corresponds to the first UE capability set. It can also be understood that the first frequency domain resource is related to the first UE capability set, or that the first frequency domain resource supports the use of UEs corresponding to the first UE capability set, or that UEs with the capabilities of UEs in the first UE capability set can receive and / or transmit signals within the first frequency domain resource.

[0075] The second frequency domain resource corresponds to the second UE capability set. It can also be understood that the second frequency domain resource is related to the second UE capability set, or that the second frequency domain resource supports the use of UEs corresponding to the second UE capability set, or that UEs with the capabilities of UEs in the second UE capability set can receive and / or transmit signals within the second frequency domain resource.

[0076] The first frequency domain resource is represented by a frequency domain range or a frequency domain unit. For example, the first frequency domain resource includes a frequency domain range (e.g., f1 kHz to f2 kHz); or, the first frequency domain resource includes multiple frequency domain ranges, which may be continuous or discontinuous in the frequency domain. Alternatively, the first frequency domain resource includes a single frequency domain unit; or, the first frequency domain resource includes multiple frequency domain units, which may be continuous or discontinuous in the frequency domain.

[0077] The second frequency domain resource is represented by a frequency domain range or a frequency domain unit. For example, the second frequency domain resource includes a frequency domain range (e.g., f3 kHz to f4 kHz); or, the second frequency domain resource includes multiple frequency domain ranges, which may be continuous or discontinuous in the frequency domain. Alternatively, the second frequency domain resource may include a single frequency domain unit; or, the second frequency domain resource may include multiple frequency domain units, which may be continuous or discontinuous in the frequency domain.

[0078] In the embodiments of this application, the frequency domain unit includes one or more of the following: carrier, subband, BWP, subcarrier, PRB, etc.

[0079] The first frequency domain resource and the second frequency domain resource are different. In some embodiments, the first frequency domain resource and the second frequency domain resource satisfy one or more of the following: the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource; the center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain start position of the second frequency domain resource; the frequency domain end position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the first frequency domain resource and the second frequency domain resource do not overlap in the frequency domain.

[0080] The first UE capability set is different from the second UE capability set, or the first UE capability set and the second UE capability set partially overlap. In some embodiments, the first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set, that is, the second UE capability set is a subset of the first UE capability set.

[0081] In some embodiments, the first UE supports a first UE capability set, and if the first UE capability set includes at least a second UE capability set, the first UE also supports the second UE capability set. Therefore, the first UE has the capability to receive and / or transmit signals in the first frequency domain resources, and also has the capability to receive and / or transmit signals in the second frequency domain resources.

[0082] In some embodiments, the first UE supports a first UE capability set, and if the first UE capability set is a superset of the second UE capability set, the first UE also supports the second UE capability set. Therefore, the first UE has the capability to receive and / or transmit signals in the first frequency domain resources, and also has the capability to receive and / or transmit signals in the second frequency domain resources.

[0083] In this embodiment of the application, the first UE can be implemented as the terminal device 120 shown in FIG1.

[0084] In summary, the method provided in this application embodiment supports the first UE to receive signals in different frequency domain resources corresponding to different capability sets, which helps the UE to make reasonable use of frequency domain resources based on its own capabilities and improve the resource utilization efficiency and transmission efficiency in the communication system.

[0085] Figure 4 shows a flowchart illustrating a signal transmission method provided in an exemplary embodiment of this application, which is applied to the wireless communication system shown in Figure 1. The method is executed by a second UE and includes at least some of the following steps:

[0086] Step 420: Receive the second signal within the second frequency domain resources, wherein the second frequency domain resources correspond to the second UE capability set.

[0087] The second UE corresponds to the second UE capability set, which can also be understood as the second UE supporting the second UE capability set, or as the second UE possessing the UE capabilities in the second UE capability set.

[0088] The second frequency domain resource corresponds to the second UE capability set. It can also be understood that the second frequency domain resource is related to the second UE capability set, or that the second frequency domain resource supports the use of UEs corresponding to the second UE capability set, or that UEs with the capabilities of UEs in the second UE capability set can receive and / or transmit signals within the second frequency domain resource.

[0089] The second frequency domain resource is represented by a frequency domain range or a frequency domain unit. For example, the second frequency domain resource includes a frequency domain range (e.g., f3 kHz to f4 kHz); or, the second frequency domain resource includes multiple frequency domain ranges, which may be continuous or discontinuous in the frequency domain. Alternatively, the second frequency domain resource may include a single frequency domain unit; or, the second frequency domain resource may include multiple frequency domain units, which may be continuous or discontinuous in the frequency domain. Frequency domain units include one or more of the following: carrier, subband, BWP, subcarrier, PRB, etc.

[0090] The first frequency domain resource and the second frequency domain resource are different. In some embodiments, the first frequency domain resource and the second frequency domain resource satisfy one or more of the following: the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource; the center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain start position of the second frequency domain resource; the frequency domain end position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the first frequency domain resource and the second frequency domain resource do not overlap in the frequency domain.

[0091] The first UE capability set is different from the second UE capability set, or the first UE capability set and the second UE capability set partially overlap. In some embodiments, the first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set, that is, the second UE capability set is a subset of the first UE capability set.

[0092] In this embodiment of the application, the second UE can be implemented as the terminal device 120 shown in FIG1.

[0093] In summary, the method provided in this application embodiment supports the second UE to receive the second signal in the second frequency domain resources corresponding to its own capabilities, thereby improving the resource utilization efficiency and transmission efficiency within the communication system.

[0094] Furthermore, considering that the initial access process is a necessary process for communication between the UE and the network device, and that the downlink signal sent by the network device during the initial access process plays an important role, this application also makes specific designs for the transmission of the first signal and the second signal shown in Figures 2 to 4 in conjunction with the initial access process.

[0095] During initial access, network devices may transmit downlink signals including one or more of the following: synchronization signals, broadcast signals / broadcast channels, downlink control information (DCI) / downlink control channels, and system information. The UE can obtain time and frequency synchronization (also understood as frequency alignment), radio frame timing, and physical cell identifiers (IDs) through the detected downlink synchronization signals. The broadcast signals carried by the Physical Broadcast Channel (PBCH) include at least one of the following: reference signals (such as demodulation reference signals (DMRS)), physical layer information, and higher-layer information. The physical layer information and / or higher-layer information are used to determine the search space set information for the downlink control channels. The scheduling information (such as DCI) carried by the downlink control channels (such as the Physical Downlink Control Channel (PDCCH)) can be used to schedule downlink data channels carrying system information.

[0096] For example, during cell search, the UE searches for downlink Synchronization Signal Blocks (SSBs) on the synchronization grid. SSBs can also be called Synchronization Signal Block / PBCH Blocks (SS / PBCH Blocks). The structure of an SSB, as shown in Figure 5, includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a PBCH. An SSB occupies 240 subcarriers in the frequency domain. If a PRB consists of 12 subcarriers, then an SSB can also be said to occupy 20 PRBs in the frequency domain. The PSS and SSS sequences are both 127 units long, occupying the middle 12 PRBs (including guard subcarriers) in the frequency domain. Four PRBs are reserved on each side of the PSS for protection. The PBCH is located on the remaining PRBs excluding the SSS, PSS, and the eight PRBs on either side of them. In addition to being used for related detection and downlink synchronization, PSS and SSS are also used to carry the cell ID, which identifies which network device in which cell sent the SSB.

[0097] The UE scans and measures the SSBs transmitted by network devices, evaluating signal quality (such as Layer 1 Reference Signal Received Power (L1-RSRP)) to select the optimal SSB for access. For the UE, the main functions of measuring and selecting the optimal SSB include: obtaining downlink synchronization, determining the uplink beam direction, and decoding the PBCH within the SSB. The PBCH includes higher-layer information, such as the Master Information Block (MIB), which contains scheduling information for the Physical Downlink Shared Channel (PDSCH) carrying System Information Block 1 (SIB1). After selecting the best SSB, the UE can decode the PBCH to obtain the MIB. Based on the configuration information in the MIB and the system information transmission method agreed upon in the protocol, the UE blindly detects the PDCCH of the scheduling system information from the Control Resource Set (CORESET) #0 and the Search Space #0, decodes the PDSCH carrying SIB1 from the PDCCH, and thus obtains the configuration information of the Random Access Channel (RACH) in SIB1.

[0098] In the NR system, the payload length of the MIB is 24 bits. The PBCH contains the following information elements (IEs):

[0099] It includes:

[0100] The 6-bit system frame number (IE) is used for the transmission of the system frame number. The complete system frame number requires 10 bits, but the MIB only carries the high 6 bits and the low 4 bits of the system frame number in the non-MIB bits of the PBCH.

[0101] 1-bit Subcarrier Spacing Common IE: The subcarrier spacing of downlink signals during the initial access procedure, indicating the subcarrier spacing of SIB1 / OSI / initial access Msg2 / Msg4 / paging messages;

[0102] 4-bit SSB Subcarrier Offset IE: Indicates the number of subcarrier intervals between the lowest subcarrier of the SSB and its nearest PRB;

[0103] 1-bit DMRS Type A Position IE (dmrs-TypeA-Position IE): Indicates the configuration of PDSCH DMRS;

[0104] 8-bit SIB1_PDCCH Configuration IE (pdcch-ConfigSIB1 IE): Configures SIB1_PDCCH, including CORESET and search space configuration;

[0105] 1-bit CellBarred IE: Radio Resource Control (RRC) access control parameter indicating whether the cell is blocked;

[0106] 1-bit intra-frequency reselection IE (intraFreqReselection IE): An access control parameter of RRC that indicates whether intra-frequency reselection is allowed in the cell;

[0107] 1-bit spare: that is, a reserved bit.

[0108] The transmission content and encoding process of PBCH are shown in Figure 6. The "A bits" refer to the 24-bit MIB transmitted from the RRC layer to the physical layer. Before encoding the PBCH, 8 bits need to be added to the "A bits," including 4 bits for the last 4 bits of the system frame number, 1 bit for the half-frame indicator, and the remaining 3 bits for indicating the high 3 bits or the Most Significant Bit (MSB) in the SSB index. After scrambling the 32-bit PBCH transport block, a Cyclic Redundancy Check (CRC) is added, and polar encoding and rate matching are performed.

[0109] The SSB can carry cell IDs (up to 1008 in NR systems; in future 6G and subsequent evolution systems, the number of cell IDs carried may be more than 1008, less than 1008, or equal to 1008), supporting UEs to achieve time and frequency synchronization, obtain symbol-level timing, obtain MIB, assist in cell search, and support Radio Resource Management (RRM) / Radio Link Monitoring (RLM), etc.

[0110] In NR systems, coverage requirements are met by introducing a beam sweeping mechanism, essentially "trading time for space." To this end, NR systems periodically transmit SSBs in the time domain in the form of SSB burst sets. Each SSB burst set contains multiple SSBs, all concentrated within a 5-millisecond (ms) range. Different SSBs may have different beam directions, thus achieving coverage in different directions. As shown in Figure 7, SSB burst sets are transmitted at a period of 20ms, and each SSB burst set contains 8 SSBs, corresponding to indices #0 to #7. Different SSBs target different beam directions, ensuring that UEs in different directions can receive SSBs with sufficiently high RSRP.

[0111] The period of the SSB burst set ranges from {5, 10, 20, 40, 80, 160} ms, and this period can be configured via higher-layer signaling. However, for UEs performing initial cell search, they cannot receive higher-layer signaling for configuring the SSB burst set period before searching for an SSB; therefore, a default period needs to be defined. In the NR system, the default period for the SSB burst set is defined as 20 ms for UEs performing initial cell search. When the higher-layer signaling received by the UE contains SSB burst set period information, the period of the SSB burst set can be determined through this higher-layer signaling; otherwise, the UE defaults to a period of 5 ms for the SSB burst set of the serving cell.

[0112] In addition to demodulating the PBCH, the DMRS in the PBCH can also associate the DMRS sequence with the SSB index. This allows the UE to obtain the SSB index based on the detected DMRS sequence, and thus determine the position of the SSB within the SSB burst. Since the SSB burst pattern within 5ms is predefined, the UE can obtain the SSB's position within 5ms based on the SSB index. For example, in Figure 7, if the UE detects the SSB index, it can determine the current position of the SSB within 5ms. Since a system frame is 10ms long, consisting of two 5ms half-frames, the PBCH physical layer overhead contains a 1-bit half-frame indicator. The UE can use this half-frame indicator to determine whether the detected SSB is in the first or last 5ms of the system frame. Therefore, the UE can obtain the absolute position of the detected SSB within a system frame. Furthermore, based on the combined indication of higher-layer information (such as MIB) and physical layer information, the system frame number (SFN) of the SSB can be obtained. Therefore, the UE can obtain the absolute position of the SSB within the SFN period by detecting the SSB, that is, deduce the overall system timing from the SSB, that is, obtain the position of the current SSB in the system timing, and complete downlink synchronization.

[0113] Figure 8 shows a flowchart of a signal transmission method provided in an exemplary embodiment of this application, which is applied to the wireless communication system shown in Figure 1. The method includes at least some of the following steps:

[0114] Step 820: The network device transmits the first signal in the first frequency domain resources and the second signal in the second frequency domain resources.

[0115] The first frequency domain resources are different from the second frequency domain resources. The first frequency domain resources correspond to the first set of UE capabilities. This can also be understood as the first frequency domain resources being related to the first set of UE capabilities, supporting the use of UEs corresponding to the first set of UE capabilities, and allowing UEs possessing the capabilities of UEs in the first set to receive and / or transmit signals within the first frequency domain resources. Similarly, the second frequency domain resources correspond to the second set of UE capabilities. This can also be understood as the second frequency domain resources being related to the second set of UE capabilities, supporting the use of UEs corresponding to the second set of UE capabilities, and allowing UEs possessing the capabilities of UEs in the second set to receive and / or transmit signals within the second frequency domain resources.

[0116] In some embodiments, the first frequency domain resource and the second frequency domain resource satisfy one or more of the following: the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource; the center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain start position of the second frequency domain resource; the frequency domain end position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; and the first frequency domain resource and the second frequency domain resource do not overlap in the frequency domain.

[0117] In some embodiments, the second frequency domain resource may have better coverage performance than the first frequency domain resource.

[0118] In some embodiments, the first frequency domain resource is represented by a frequency domain range or a frequency domain cell. For example, the first frequency domain resource includes one or more frequency domain ranges, which may be continuous or discontinuous in the frequency domain. Alternatively, the first frequency domain resource includes one or more frequency domain cells, which may be continuous or discontinuous in the frequency domain. The second frequency domain resource is represented by a frequency domain range or a frequency domain cell. For example, the second frequency domain resource includes one or more frequency domain ranges, which may be continuous or discontinuous in the frequency domain. Alternatively, the second frequency domain resource includes one or more frequency domain cells, which may be continuous or discontinuous in the frequency domain.

[0119] The frequency domain unit includes one or more of the following: carrier, subband, BWP, subcarrier, PRB, etc. For example, the first frequency domain resource includes the first carrier, and the second frequency domain resource includes the second carrier; or the first frequency domain resource includes the first subband, and the second frequency domain resource includes the second subband; or the first frequency domain resource includes the first BWP, and the second frequency domain resource includes the second BWP; or the first frequency domain resource includes x1 subcarriers, and the second frequency domain resource includes x2 subcarriers; or the first frequency domain resource includes x1 PRBs, and the second frequency domain resource includes x2 PRBs.

[0120] In some embodiments, the first frequency domain resource is different from the second frequency domain resource, but the number of frequency domain units included in the first frequency domain resource may be the same or different from the number of frequency domain units included in the second frequency domain resource, that is, the values ​​of x1 and x2 may be equal or unequal.

[0121] In some embodiments, there may be or may not be an interval between the first frequency domain resource and the second frequency domain resource.

[0122] The first UE capability set is different from the second UE capability set, or the first UE capability set and the second UE capability set partially overlap. In some embodiments, the first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set, that is, the second UE capability set is a subset of the first UE capability set.

[0123] In some embodiments, the first UE capability set includes one or more of the following UE capabilities: supporting a first bandwidth, supporting a first number of antennas, supporting a first MCS, and supporting a first data rate. The second UE capability set includes one or more of the following UE capabilities: supporting a second bandwidth, supporting a second number of antennas, supporting a second MCS, and supporting a second data rate.

[0124] For example, if the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set, then the first bandwidth is greater than the second bandwidth, and / or the number of first antennas is greater than the number of second antennas, and / or the order of the first MCS is higher than the order of the second MCS (or the index of the first MCS is greater than the index of the second MCS), and / or the first data rate is greater than the second data rate.

[0125] For example, the second set of UE capabilities is the minimum set of UE capabilities, such as the minimum kernel UE capabilities, for instance, supporting narrowband transmission and reception at 3MHz / 5MHz. The first set of UE capabilities is the complete set of UE capabilities, such as full kernel / large kernel UE capabilities. Large kernel UE capabilities include not only the minimum kernel UE capabilities but also additional UE capabilities, such as supporting one or more of the following: wideband transmission and reception, a larger number of antennas, a higher-order MCS, and a larger data rate. Referring to Figure 9, full kernel UE capabilities include minimum kernel UE capabilities; that is, minimum kernel UE capabilities are a subset of full kernel UE capabilities.

[0126] In some embodiments, the UE capabilities in the first UE capability set include the UE capabilities in the second UE capability set. For example, the first UE capability set includes one or more of the following UE capabilities: supporting a first bandwidth and a second bandwidth, supporting a first number of antennas and a second number of antennas, supporting a first MCS and a second MCS, and supporting a first data rate and a second data rate. The second UE capability set includes one or more of the following UE capabilities: supporting a second bandwidth, supporting a second number of antennas, supporting a second MCS, and supporting a second data rate.

[0127] In some embodiments, the first signal includes one or more of the following: a synchronization signal, a broadcast signal / broadcast channel, scheduling information / downlink control channel, and system information. The synchronization signal includes a PSS and / or an SSS.

[0128] In some embodiments, the second signal includes one or more of the following: a synchronization signal, a broadcast signal / broadcast channel, scheduling information / downlink control channel, and system information. The synchronization signal includes a PSS and / or an SSS.

[0129] The synchronization signal is used at least to achieve downlink synchronization. Broadcast signals include at least one of the following: reference signals (such as DMRS), physical layer information (also known as payload), and higher-layer information (such as MIB). The higher-layer information is used at least to determine the search space set information for the downlink control channel, and the scheduling information carried by the downlink control channel is used at least to schedule the downlink data channel carrying system information. The scheduling information may be implemented as DCI. The function of each signal can be referred to the previous introduction regarding the initial access process, and will not be elaborated upon here.

[0130] For example, the first signal includes one or more of the following: a first SSS, a first broadcast signal / first PBCH, a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: a PSS, a second SSS, a second broadcast signal / second PBCH, a second DCI / second PDCCH, and a second SIB.

[0131] For example, the first signal includes one or more of the following: a first broadcast signal / first PBCH, a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: PSS, SSS, a second broadcast signal / second PBCH, a second DCI / second PDCCH, and a second SIB.

[0132] For example, the first signal includes one or more of the following: a first DCI / first PDCCH, a first SIB. The second signal includes one or more of the following: PSS, SSS, broadcast signal / PBCH, a second DCI / second PDCCH, a second SIB.

[0133] For example, the first signal includes: a first SIB. The second signal includes one or more of the following: PSS, SSS, broadcast signal / PBCH, DCI / PDCCH, and a second SIB.

[0134] For example, the first signal includes one or more of the following: a first PSS, a first SSS, a first broadcast signal / first PBCH, a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: a second PSS, a second SSS, a second broadcast signal / second PBCH, a second DCI / second PDCCH, and a second SIB.

[0135] Step 840: The first UE receives the first signal in the first frequency domain resources and / or receives the second signal in the second frequency domain resources.

[0136] The first UE corresponds to the first UE capability set, which can also be understood as the first UE supporting the first UE capability set, or as the first UE possessing the UE capabilities in the first UE capability set.

[0137] Taking the first UE supporting large core UE capabilities as an example, the UE can dynamically enable (or deactivate) the large core capabilities. When enabled, the UE can use the large core UE capabilities, and when deactivated, the UE can only use the minimum core UE capabilities.

[0138] Since the UE capabilities in the first UE capability set are higher than those in the second UE capability set, and / or the first UE capability set is a superset of the second UE capability set, the first UE supporting the first UE capability set can use the first frequency domain resources corresponding to the first UE capability set and / or the second frequency domain resources corresponding to the second UE capability set. The first UE completes downlink synchronization and / or obtains system information based on the received first signal and / or second signal.

[0139] Step 860: The second UE receives the second signal within the second frequency domain resources.

[0140] The second UE corresponds to the second UE capability set, which can also be understood as the second UE supporting the second UE capability set, or as the second UE possessing the UE capabilities in the second UE capability set.

[0141] A second UE supporting a second UE capability set can only use the second frequency domain resources corresponding to the second UE capability set, and cannot use the first frequency domain resources corresponding to the first UE capability set. The second UE completes downlink synchronization and / or obtains system information based on the received second signal.

[0142] The execution times of steps 840 and 860 may or may not be sequential. For example, the first UE may execute step 840 at the same time as the second UE executes step 860, or the execution times of the first UE and the second UE may overlap.

[0143] In summary, the method provided in this application supports network devices to transmit signals in different frequency domain resources corresponding to different capability sets. This facilitates the first UE and the second UE with different capabilities to reasonably use the corresponding frequency domain resources to obtain downlink signals. It helps the first UE and the second UE to achieve downlink synchronization and / or obtain system information through different frequency domain resources, thereby improving the resource utilization efficiency and transmission efficiency in the communication system. This can save transmission resources and avoid some resource congestion.

[0144] Furthermore, based on Figures 2 to 9, and referring to Figure 10, a schematic diagram of a signal transmission method provided by an exemplary embodiment of this application is shown. The network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first signal includes one or more of the following: a first SSS, a first broadcast signal / first PBCH, a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: a PSS, a second SSS, a second broadcast signal / second PBCH, a second DCI / second PDCCH, and a second SIB.

[0145] For example, the network device transmits a PSS on second frequency domain resources, and also transmits at least one of a second SSS, a second PBCH, a second PDCCH, and a second SIB on the second frequency domain resources. The network device also transmits at least one of a first SSS, a first PBCH, a first PDCCH, and a first SIB on first frequency domain resources.

[0146] In some embodiments, the first signal and the second signal may be sequential in time; for example, the first signal may be sent before the second signal, or the second signal may be sent before the first signal. Alternatively, the first signal and the second signal may not be sequential in time; for example, the time resources used by the first signal and the second signal may partially overlap, or the time resources used by the first signal and the second signal may completely overlap, or some signals in the first signal and some signals in the second signal may alternate sequentially in time.

[0147] The second frequency domain resources correspond to the second UE capability set (also known as the minimum UE capability set or small core UE capability set), and the first frequency domain resources correspond to the first UE capability set (also known as the complete UE capability set or large core UE capability set).

[0148] For a second UE that supports the second UE capability set, it can only transmit and / or receive signals in the second frequency domain resources, and cannot transmit and / or receive signals in the first frequency domain resources.

[0149] For a first UE that supports the first UE capability set, it has large-core UE capabilities and can dynamically enable either small-core UE capabilities or large-core UE capabilities. Therefore, if the first UE only enables small-core UE capabilities, it means that the first UE uses the UE capabilities in the second UE capability set, that is, the first UE operates in small-core capability mode, and the first UE transmits and / or receives signals in the second frequency domain resources; if the first UE enables large-core UE capabilities, it means that the first UE uses the UE capabilities in the first UE capability set, that is, the first UE operates in large-core capability mode, and the first UE transmits and / or receives signals in the first frequency domain resources.

[0150] For a second UE supporting the second UE capability set, PSS detection can only be performed within the second frequency domain resources during the initial access process. For a first UE supporting the first UE capability set, only the second UE capability set can be enabled during the initial access process (e.g., only the small core UE capability set is enabled), and PSS detection can also be performed within the second frequency domain resources. Therefore, both the first and second UEs detect PSS within the second frequency domain resources during downlink synchronization. In other words, the PSS transmitted by the network device within the second frequency domain resources is common or shared for both the first and second UEs. Therefore, the PSS transmitted within the second frequency domain resources can also be called the common PSS, meaning that both the first and second UEs need to receive and / or detect this PSS within the second frequency domain resources.

[0151] After sending the PSS, the network device also sends the second SSS and the second PBCH in the second frequency domain resources. The second PBCH includes a second reference signal (e.g., PBCH DMRS2), second physical layer information (or payload 2), and second higher layer information (e.g., MIB 2). Furthermore, the network device can also send scheduling information (e.g., a second DCI) in the second PDCCH in the second frequency domain resources to schedule the second SIB (taking SIB1 as an example, the second SIB might be SIB1-2). For the second UE, after detecting the PSS in the second frequency domain resources, it continues to detect the second SSS and the second PBCH in the second frequency domain resources to obtain the second physical layer information and the second higher layer information. Based on the second physical layer information and / or the second higher layer information, it obtains the CORESET and search space of the second PDCCH, and the CORESET and search space of the second PDCCH are also located within the second frequency domain resources. When the second UE detects the second PDCCH, based on the scheduling information (e.g., the second DCI) therein, it further receives SIB1-2 in the second frequency domain resources. Thus, the second UE completes downlink synchronization and system information acquisition entirely in the second frequency domain resources. Furthermore, referring to the initial access process described above, the second UE can also obtain the cell ID and support RRM / RLM based on the second signal transmitted within the second frequency domain resources.

[0152] The network device also transmits the first SSS and the first PBCH in the first frequency domain resources. The first PBCH includes a first reference signal (e.g., PBCH DMRS1), first physical layer information (or payload 1), and first higher layer information (e.g., MIB 1). Furthermore, the network device can also transmit scheduling information (e.g., the first DCI) in the first PDCCH of the first frequency domain resources to schedule the first SIB (taking SIB1 as an example, the first SIB might be SIB1-1). For the first UE, after detecting the PSS in the second frequency domain resources, it detects the first SSS and the first PBCH in the first frequency domain resources. For example, if the first UE is operating in small core capability mode, after detecting the PSS in the second frequency domain resources, it switches to large core capability mode and continues to detect the first SSS and the first PBCH in the first frequency domain resources. Alternatively, if the first UE enables a second UE capability set (e.g., a small core UE capability set), after detecting the PSS in the second frequency domain resources, it enables the first UE capability set (e.g., a large core UE capability set) and switches to the first frequency domain resources to continue detecting the first SSS and the first PBCH. Furthermore, the first UE acquires first physical layer information and first higher layer information from the first frequency domain resources. Based on the first physical layer information and / or the first higher layer information, it acquires the coreset and search space of the first PDCCH. The coreset and search space of the first PDCCH are also located within the first frequency domain resources. When the first UE detects the first PDCCH, it further receives SIB1-1 on the first frequency domain resources based on the scheduling information (such as the first DCI) contained therein. Therefore, the first UE completes downlink synchronization and system information acquisition on both the first and second frequency domain resources, i.e., through the first and second signals. Further, referring to the initial access process described above, the first UE can also acquire the cell ID and support RRM / RLM, etc., based on the first and second signals.

[0153] In summary, the method provided in this application supports network devices transmitting signals in different frequency domain resources corresponding to different capability sets. This facilitates the reasonable use of corresponding frequency domain resources by a first UE and a second UE with different capabilities to obtain downlink signals, and helps the first UE and the second UE achieve downlink synchronization and / or obtain system information through different frequency domain resources. The network device transmits the PSS, which both the first UE and the second UE need to detect, in the second frequency domain resource, saving transmission resources. For the first UE, initially operating in the second frequency domain resource corresponding to a lower capability also saves power consumption. The network device provides subsequent SSS, PBCH, PDCCH, and SIB for the first UE and the second UE respectively in the first and second frequency domain resources, which helps avoid congestion in the second frequency domain resource, improves transmission efficiency, and prevents the first UE with higher capabilities from continuously operating in the second frequency domain resource, thus avoiding a waste of its capabilities.

[0154] Based on Figures 2 to 9, and referring to Figure 11, a schematic diagram of a signal transmission method provided by an exemplary embodiment of this application is shown. A network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first signal includes one or more of the following: a first broadcast signal / first PBCH, a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: PSS, SSS, a second broadcast signal / second PBCH, a second DCI / second PDCCH, and a second SIB.

[0155] For example, the network device transmits PSS and SSS on second frequency domain resources, and transmits at least one of the second PBCH, second PDCCH, and second SIB on the second frequency domain resources. The network device transmits at least one of the first PBCH, first PDCCH, and first SIB on the first frequency domain resources.

[0156] In some embodiments, the first signal and the second signal may be sequential in time; for example, the first signal may be sent before the second signal, or the second signal may be sent before the first signal. Alternatively, the first signal and the second signal may not be sequential in time; for example, the time resources used by the first signal and the second signal may partially overlap, or the time resources used by the first signal and the second signal may completely overlap, or some signals in the first signal and some signals in the second signal may alternate sequentially in time.

[0157] The second frequency domain resources correspond to the second UE capability set (also known as the minimum UE capability set or small core UE capability set), and the first frequency domain resources correspond to the first UE capability set (also known as the complete UE capability set or large core UE capability set).

[0158] For a second UE that supports the second UE capability set, it can only transmit and / or receive signals in the second frequency domain resources, and cannot transmit and / or receive signals in the first frequency domain resources.

[0159] For a first UE that supports the first UE capability set, it has large-core UE capabilities and can dynamically enable either small-core UE capabilities or large-core UE capabilities. Therefore, if the first UE only enables small-core UE capabilities, it means that the first UE uses the UE capabilities in the second UE capability set, that is, the first UE operates in small-core capability mode, and the first UE transmits and / or receives signals in the second frequency domain resources; if the first UE enables large-core UE capabilities, it means that the first UE uses the UE capabilities in the first UE capability set, that is, the first UE operates in large-core capability mode, and the first UE transmits and / or receives signals in the first frequency domain resources.

[0160] For a second UE supporting the second UE capability set, PSS and SSS detection can only be performed within the second frequency domain resources during the initial access process. For a first UE supporting the first UE capability set, only the second UE capability set can be enabled during the initial access process (e.g., only the small core UE capability set is enabled), and PSS and SSS detection can also be performed within the second frequency domain resources. Therefore, both the first and second UEs detect PSS and SSS within the second frequency domain resources during downlink synchronization. In other words, the PSS and SSS transmitted by the network device within the second frequency domain resources are common or shared by the first and second UEs. Therefore, the PSS transmitted within the second frequency domain resources can also be called the common PSS, meaning that both the first and second UEs need to receive and / or detect this PSS within the second frequency domain resources, and the SSS transmitted within the second frequency domain resources can be called the common SSS, meaning that both the first and second UEs need to receive and / or detect this SSS within the second frequency domain resources.

[0161] After sending the PSS and SSS, the network device also sends the second PBCH in the second frequency domain resources. The second PBCH includes a second reference signal (e.g., PBCH DMRS2), second physical layer information (or payload 2), and second higher layer information (e.g., MIB 2). Furthermore, the network device can also send scheduling information (e.g., a second DCI) in the second PDCCH in the second frequency domain resources to schedule the second SIB (taking SIB1 as an example, the second SIB might be SIB1-2). For the second UE, after detecting the PSS and SSS in the second frequency domain resources, it continues to detect the second PBCH in the second frequency domain resources to obtain the second physical layer information and the second higher layer information. Based on the second physical layer information and / or the second higher layer information, it obtains the CORESET and search space of the second PDCCH, and the CORESET and search space of the second PDCCH are also located within the second frequency domain resources. When the second UE detects the second PDCCH, based on the scheduling information (e.g., the second DCI) therein, it further receives SIB1-2 in the second frequency domain resources. Thus, the second UE completes downlink synchronization and system information acquisition entirely in the second frequency domain resources.

[0162] The network device also transmits the first PBCH in the first frequency domain resources. The first PBCH includes a first reference signal (e.g., PBCH DMRS1), first physical layer information (or payload 1), and first higher layer information (e.g., MIB 1). Furthermore, the network device can also transmit scheduling information (e.g., the first DCI) in the first PDCCH of the first frequency domain resources to schedule the first SIB (for example, SIB1-1). For the first UE, after detecting the PSS and SSS in the second frequency domain resources, it detects the first PBCH in the first frequency domain resources. For example, if the first UE is operating in small core capability mode, after detecting the PSS and SSS in the second frequency domain resources, it switches to large core capability mode and continues to detect the first PBCH in the first frequency domain resources. Alternatively, if the first UE enables a second UE capability set (e.g., a small core UE capability set), after detecting the PSS and SSS in the second frequency domain resources, it enables the first UE capability set (e.g., a large core UE capability set) and switches to the first frequency domain resources to continue detecting the first PBCH. Furthermore, the first UE acquires first physical layer information and first higher layer information from the first frequency domain resources. Based on the first physical layer information and / or the first higher layer information, it acquires the coreset and search space of the first PDCCH. The coreset and search space of the first PDCCH are also located within the first frequency domain resources. When the first UE detects the first PDCCH, it further receives SIB1-1 on the first frequency domain resources based on the scheduling information (such as the first DCI) contained therein. Therefore, the first UE completes downlink synchronization and system information acquisition on both the first and second frequency domain resources, i.e., it completes downlink synchronization and system information acquisition through the first and second signals.

[0163] In summary, the method provided in this application supports network devices transmitting signals in different frequency domain resources corresponding to different capability sets. This facilitates the reasonable use of corresponding frequency domain resources by a first UE and a second UE with different capabilities to obtain downlink signals, and helps the first UE and the second UE achieve downlink synchronization and / or obtain system information through different frequency domain resources. The network device transmits the PSS and SSS, which both the first UE and the second UE need to detect, in the second frequency domain resource, saving transmission resources. For the first UE, initially operating in the second frequency domain resource corresponding to a lower capability also saves power consumption. The network device provides subsequent PBCH, PDCCH, and SIB for the first UE and the second UE respectively in the first and second frequency domain resources, which helps avoid congestion in the second frequency domain resource, improves transmission efficiency, and prevents the first UE with higher capabilities from continuously operating in the second frequency domain resource, thus avoiding a waste of its capabilities.

[0164] Based on Figures 2 to 9, and referring to Figure 12, a schematic diagram of a signal transmission method provided by an exemplary embodiment of this application is shown. A network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first signal includes one or more of the following: a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: PSS, SSS, broadcast signal / PBCH, a second DCI / second PDCCH, and a second SIB.

[0165] For example, the network device transmits PSS, SSS, and PBCH in the second frequency domain resources, and transmits at least one of the second PDCCH and the second SIB in the second frequency domain resources. That is, the network device transmits SSB or SS / PBCH in the second frequency domain resources, and transmits at least one of the second PDCCH and the second SIB in the second frequency domain resources. The network device transmits at least one of the first PDCCH and the first SIB in the first frequency domain resources.

[0166] In some embodiments, the first signal and the second signal may be sequential in time; for example, the first signal may be sent before the second signal, or the second signal may be sent before the first signal. Alternatively, the first signal and the second signal may not be sequential in time; for example, the time resources used by the first signal and the second signal may partially overlap, or the time resources used by the first signal and the second signal may completely overlap, or some signals in the first signal and some signals in the second signal may alternate sequentially in time.

[0167] The second frequency domain resources correspond to the second UE capability set (also known as the minimum UE capability set or small core UE capability set), and the first frequency domain resources correspond to the first UE capability set (also known as the complete UE capability set or large core UE capability set).

[0168] For a second UE that supports the second UE capability set, it can only transmit and / or receive signals in the second frequency domain resources, and cannot transmit and / or receive signals in the first frequency domain resources.

[0169] For a first UE that supports the first UE capability set, it has large-core UE capabilities and can dynamically enable either small-core UE capabilities or large-core UE capabilities. Therefore, if the first UE only enables small-core UE capabilities, it means that the first UE uses the UE capabilities in the second UE capability set, that is, the first UE operates in small-core capability mode, and the first UE transmits and / or receives signals in the second frequency domain resources; if the first UE enables large-core UE capabilities, it means that the first UE uses the UE capabilities in the first UE capability set, that is, the first UE operates in large-core capability mode, and the first UE transmits and / or receives signals in the first frequency domain resources.

[0170] For a second UE supporting the second UE capability set, PSS and SSS detection and PBCH reception can only be performed within the second frequency domain resources during the initial access process. For a first UE supporting the first UE capability set, only the second UE capability set can be enabled during the initial access process (e.g., only the small core UE capability set is enabled), and PSS and SSS detection and PBCH reception can also be performed within the second frequency domain resources. Therefore, when the first and second UEs perform downlink synchronization, both detect PSS and SSS and receive PBCH within the second frequency domain resources. In other words, the PSS, SSS, and PBCH transmitted by the network device in the second frequency domain resources are common or shared by the first and second UEs. Therefore, the PSS transmitted within the second frequency domain resources can also be called the common PSS, which means that both the first UE and the second UE need to receive and / or detect the PSS in the second frequency domain resources. The SSS transmitted within the second frequency domain resources can also be called the common SSS, which means that both the first UE and the second UE need to receive and / or detect the SSS in the second frequency domain resources. The PBCH transmitted within the second frequency domain resources can also be called the common PBCH, which means that both the first UE and the second UE need to receive and / or detect the broadcast signal in the PBCH in the second frequency domain resources.

[0171] Network devices transmit PSS, SSS, and PBCH in the second frequency domain resources. PBCH includes reference signals (e.g., PBCH DMRS), physical layer information (or payload), and higher-layer information (e.g., MIB). In other words, network devices transmit SSB or SS / PBCH in the second frequency domain resources. Furthermore, network devices can also transmit scheduling information (e.g., second DCI) in the second PDCCH of the second frequency domain resources to schedule the second SIB (e.g., SIB1, the second SIB is SIB1-2). For the second UE, after detecting PSS, SSS, and PBCH in the second frequency domain resources, it obtains the CORESET and search space of the second PDCCH based on the physical layer information and / or higher-layer information in the PBCH. The CORESET and search space of the second PDCCH are also located within the second frequency domain resources. When the second UE detects the second PDCCH, it further receives SIB1-2 on the second frequency domain resources based on the scheduling information (e.g., second DCI). Thus, the second UE completes downlink synchronization and system information acquisition entirely on the second frequency domain resources.

[0172] Furthermore, the network device can also send scheduling information (such as the first DCI) to the first PDCCH in the first frequency domain resource to schedule the first SIB (taking SIB1 as an example, the first SIB is SIB1-1). For the first UE, after detecting the PSS, SSS, and PBCH in the second frequency domain resource, it obtains the CORESET and search space of the first PDCCH based on the physical layer information and / or higher layer information in the PBCH, and the CORESET and search space of the first PDCCH are located within the first frequency domain resource. Therefore, the first UE blindly detects the first PDCCH in the first frequency domain resource and receives the scheduling information (such as the first DCI) therein, and further receives SIB1-1 on the first frequency domain resource. For example, if the first UE is operating in small core capability mode and detects the PSS, SSS, and PBCH in the second frequency domain resource, it switches to large core capability mode and continues to detect the first PDCCH and the first SIB in the first frequency domain resource. For example, after the first UE enables the second UE capability set (such as the small-core UE capability set) to detect PSS, SSS, and PBCH on the second frequency domain resources, it enables the first UE capability set (such as the large-core UE capability set) and switches to the first frequency domain resources to continue detecting the first PDCCH and the first SIB. Therefore, the first UE completes downlink synchronization and system information acquisition on the first and second frequency domain resources, that is, it completes downlink synchronization and system information acquisition through the first and second signals.

[0173] In summary, the method provided in this application supports network devices transmitting signals in different frequency domain resources corresponding to different capability sets. This facilitates the rational use of corresponding frequency domain resources by a first UE and a second UE with different capabilities to obtain downlink signals, and helps the first UE and the second UE achieve downlink synchronization and / or obtain system information through different frequency domain resources. The network device transmits PSS, SSS, and PBCH, which both the first UE and the second UE need to detect, in the second frequency domain resource, saving transmission resources. For the first UE, initially operating in the second frequency domain resource corresponding to a lower capability also saves power consumption. The network device provides subsequent PDCCH and SIB for the first UE and the second UE respectively in the first and second frequency domain resources, which helps avoid congestion in the second frequency domain resource, improves transmission efficiency, and prevents the first UE with higher capabilities from continuously operating in the second frequency domain resource, thus avoiding a waste of its capabilities.

[0174] Based on Figures 2 to 9, and referring to Figure 13, a schematic diagram of a signal transmission method provided by an exemplary embodiment of this application is shown. A network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first signal includes one or more of the following: a first broadcast signal / first PBCH, a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: PSS, SSS, a second broadcast signal / second PBCH, a second DCI / second PDCCH, and a second SIB.

[0175] For example, the network device transmits the PSS, SSS, and second PBCH on second frequency domain resources, and transmits at least one of the second PDCCH and second SIB on second frequency domain resources. The network device transmits at least one of the first PBCH, first PDCCH, and first SIB on first frequency domain resources.

[0176] In some embodiments, the first signal and the second signal may be sequential in time; for example, the first signal may be sent before the second signal, or the second signal may be sent before the first signal. Alternatively, the first signal and the second signal may not be sequential in time; for example, the time resources used by the first signal and the second signal may partially overlap, or the time resources used by the first signal and the second signal may completely overlap, or some signals in the first signal and some signals in the second signal may alternate sequentially in time.

[0177] The second frequency domain resources correspond to the second UE capability set (also known as the minimum UE capability set or small core UE capability set), and the first frequency domain resources correspond to the first UE capability set (also known as the complete UE capability set or large core UE capability set).

[0178] For a second UE that supports the second UE capability set, it can only transmit and / or receive signals in the second frequency domain resources, and cannot transmit and / or receive signals in the first frequency domain resources.

[0179] For a first UE that supports the first UE capability set, it has large-core UE capabilities and can dynamically enable either small-core UE capabilities or large-core UE capabilities. Therefore, if the first UE only enables small-core UE capabilities, it means that the first UE uses the UE capabilities in the second UE capability set, that is, the first UE operates in small-core capability mode, and the first UE transmits and / or receives signals in the second frequency domain resources; if the first UE enables large-core UE capabilities, it means that the first UE uses the UE capabilities in the first UE capability set, that is, the first UE operates in large-core capability mode, and the first UE transmits and / or receives signals in the first frequency domain resources.

[0180] For a second UE supporting the second UE capability set, PSS and SSS detection and PBCH reception can only be performed within the second frequency domain resources during the initial access process. For a first UE supporting the first UE capability set, only the second UE capability set can be enabled during the initial access process (e.g., only the small core UE capability set can be enabled), and PSS and SSS detection and PBCH reception can also be performed within the second frequency domain resources. Therefore, when the first UE and the second UE perform downlink synchronization, both detect PSS and SSS and receive PBCH within the second frequency domain resources. In other words, the PSS, SSS, and second PBCH transmitted by the network device in the second frequency domain resources are common or shared by the first UE and the second UE. Therefore, the PSS transmitted within the second frequency domain resources can also be called the common PSS, which means that both the first UE and the second UE need to receive and / or detect the PSS in the second frequency domain resources. The SSS transmitted within the second frequency domain resources can also be called the common SSS, which means that both the first UE and the second UE need to receive and / or detect the SSS in the second frequency domain resources. The second PBCH transmitted within the second frequency domain resources can also be called the common PBCH, which means that both the first UE and the second UE need to receive and / or detect the broadcast signal in the second PBCH in the second frequency domain resources.

[0181] The network device transmits the PSS, SSS, and second PBCH in the second frequency domain resources. The second PBCH includes a second reference signal (e.g., PBCH DMRS2), second physical layer information (or payload 2), and second higher layer information (e.g., MIB 2). In other words, the network device transmits the SSB or SS / PBCH in the second frequency domain resources. Furthermore, the network device can also transmit scheduling information (e.g., a second DCI) in the second PDCCH of the second frequency domain resources to schedule the second SIB (taking SIB1 as an example, the second SIB might be SIB1-2). For the second UE, after detecting the PSS, SSS, and second PBCH in the second frequency domain resources, it obtains the CORESET and search space of the second PDCCH based on the second physical layer information and / or the second higher layer information in the second PBCH. The CORESET and search space of the second PDCCH are also located within the second frequency domain resources. When the second UE detects the second PDCCH, it further receives SIB1-2 on the second frequency domain resources based on the scheduling information (e.g., the second DCI). Thus, the second UE completes downlink synchronization and system information acquisition entirely on the second frequency domain resources.

[0182] The network device also transmits the first PBCH in the first frequency domain resources, including a first reference signal (e.g., PBCH DMRS1), first physical layer information (or payload 1), and first higher layer information (e.g., MIB 1). Further, the network device can also transmit scheduling information (e.g., a first DCI) in the first PDCCH of the first frequency domain resources to schedule the first SIB (e.g., SIB1-1). For the first UE, after detecting the PSS, SSS, and second PBCH in the second frequency domain resources, it obtains the transmission resources (e.g., time domain resources and / or frequency domain resources) of the first PBCH based on the second physical layer information and / or the second higher layer information in the second PBCH, and the transmission resources of the first PBCH are located within the first frequency domain resources. That is, the transmission resources of the first PBCH are related to the second PBCH, and the transmission resources of the first PBCH are indicated by the second PBCH (explicitly or implicitly). Therefore, the first UE continues to detect the first PBCH in the first frequency domain resources. The first PBCH includes the first reference signal (e.g., PBCH DMRS1), the first physical layer information (or payload 1), and the first higher layer information (e.g., MIB 1). For example, after the first UE operates in small-core capability mode and detects the PSS, SSS, and second PBCH in the second frequency domain resources, it switches to large-core capability mode and continues to detect the first PBCH in the first frequency domain resources. Alternatively, after the first UE enables a second UE capability set (e.g., a small-core UE capability set) and detects the PSS, SSS, and second PBCH in the second frequency domain resources, it enables the first UE capability set (e.g., a large-core UE capability set) and switches to the first frequency domain resources to continue detecting the first PBCH. The first UE obtains the CORESET and search space of the first PDCCH based on the first physical layer information and / or the first higher layer information in the first PBCH, and the CORESET and search space of the first PDCCH are located within the first frequency domain resources. Based on the obtained CORESET and search space, the first UE continues to blindly detect the first PDCCH in the first frequency domain resources and receives the scheduling information (e.g., the first DCI) therein. The scheduling information is used to schedule the first SIB. The first UE also continues to receive SIB1-1 in the first frequency domain resources based on the scheduling in the first PDCCH. Therefore, the first UE completes downlink synchronization and system information acquisition on the first frequency domain resources and the second frequency domain resources, that is, it completes downlink synchronization and system information acquisition through the first signal and the second signal.

[0183] In summary, the method provided in this application supports network devices transmitting signals in different frequency domain resources corresponding to different capability sets. This facilitates the rational use of corresponding frequency domain resources by a first UE and a second UE with different capabilities to obtain downlink signals, and helps the first UE and the second UE achieve downlink synchronization and / or obtain system information through different frequency domain resources. The network device transmits PSS, SSS, and PBCH, which both the first UE and the second UE need to detect, in the second frequency domain resource, saving transmission resources. For the first UE, initially operating in the second frequency domain resource corresponding to a lower capability also saves power consumption. The network device provides subsequent PDCCH and SIB for the first UE and the second UE respectively in the first and second frequency domain resources, which helps avoid congestion in the second frequency domain resource, improves transmission efficiency, and prevents the first UE with higher capabilities from continuously operating in the second frequency domain resource, thus avoiding a waste of its capabilities.

[0184] Furthermore, based on Figures 2 to 9, and referring to Figure 14, a schematic diagram of a signal transmission method provided by an exemplary embodiment of this application is shown. A network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first signal includes a first SIB. The second signal includes one or more of the following: PSS, SSS, broadcast signal / PBCH, DCI / PDCCH, and a second SIB.

[0185] For example, a network device transmits PSS, SSS, PBCH, and PDCCH using second frequency domain resources, and also transmits a second SIB using second frequency domain resources. The network device transmits a first SIB using first frequency domain resources.

[0186] In some embodiments, the first signal and the second signal may be sequential in time; for example, the first signal may be sent before the second signal, or the second signal may be sent before the first signal. Alternatively, the first signal and the second signal may not be sequential in time; for example, the time resources used by the first signal and the second signal may partially overlap, or the time resources used by the first signal and the second signal may completely overlap, or some signals in the first signal and some signals in the second signal may alternate sequentially in time.

[0187] The second frequency domain resources correspond to the second UE capability set (also known as the minimum UE capability set or small core UE capability set), and the first frequency domain resources correspond to the first UE capability set (also known as the complete UE capability set or large core UE capability set).

[0188] For a second UE that supports the second UE capability set, it can only transmit and / or receive signals in the second frequency domain resources, and cannot transmit and / or receive signals in the first frequency domain resources.

[0189] For a first UE that supports the first UE capability set, it has large-core UE capabilities and can dynamically enable either small-core UE capabilities or large-core UE capabilities. Therefore, if the first UE only enables small-core UE capabilities, it means that the first UE uses the UE capabilities in the second UE capability set, that is, the first UE operates in small-core capability mode, and the first UE transmits and / or receives signals in the second frequency domain resources; if the first UE enables large-core UE capabilities, it means that the first UE uses the UE capabilities in the first UE capability set, that is, the first UE operates in large-core capability mode, and the first UE transmits and / or receives signals in the first frequency domain resources.

[0190] For a second UE supporting the second UE capability set, PSS, SSS, PBCH, and PDCCH detection can only be performed within the second frequency domain resources during the initial access process. For a first UE supporting the first UE capability set, only the second UE capability set can be enabled during the initial access process (e.g., only the small core UE capability set is enabled), and PSS, SSS, PBCH, and PDCCH detection can also be performed within the second frequency domain resources. Therefore, both the first and second UEs detect PSS, SSS, PBCH, and PDCCH within the second frequency domain resources during downlink synchronization. The PSS, SSS, and PBCH transmitted by the network device in the second frequency domain resources are either common or shared between the first and second UEs. Therefore, the PSS transmitted within the second frequency domain resources can also be called the common PSS, which means that both the first UE and the second UE need to receive and / or detect the PSS in the second frequency domain resources. The SSS transmitted within the second frequency domain resources can also be called the common SSS, which means that both the first UE and the second UE need to receive and / or detect the SSS in the second frequency domain resources. The PBCH transmitted within the second frequency domain resources can also be called the common PBCH, which means that both the first UE and the second UE need to receive and / or detect the broadcast signal in the PBCH in the second frequency domain resources.

[0191] Network devices transmit PSS, SSS, and PBCH in the second frequency domain resources. PBCH includes reference signals (such as PBCH DMRS), physical layer information (or payload), and higher-layer information (such as MIB). Furthermore, network devices can also transmit scheduling information (such as a second DCI) in the second PDCCH of the second frequency domain resources to schedule the transmission of the second SIB (for example, SIB1, the second SIB is SIB1-2) within the second frequency domain resources; network devices can also transmit scheduling information (such as a first DCI) in the first PDCCH of the second frequency domain resources to schedule the transmission of the first SIB (for example, SIB1-1) within the first frequency domain resources.

[0192] In some embodiments, the core set of the first PDCCH is the same as that of the second PDCCH, and / or the search space of the first PDCCH is the same as that of the second PDCCH. In this case, the first DCI carried by the first PDCCH and the second DCI carried by the second PDCCH are scrambled with different Radio Network Temporary Identity (RNTI), so that the first UE can accurately obtain the first DCI by detecting its own corresponding first PDCCH, and the second UE can accurately obtain the second DCI by detecting its own corresponding second PDCCH. For example, the first DCI is scrambled with the RNTI corresponding to the first UE's capability set, and the second DCI is scrambled with the RNTI corresponding to the second UE's capability set. Another example is that the first DCI is scrambled with the RNTI corresponding to the first UE, and the second DCI is scrambled with the RNTI corresponding to the second UE.

[0193] In some embodiments, the core set of the first PDCCH is different from that of the second PDCCH, and / or the search space of the first PDCCH is different from that of the second PDCCH. For example, the transmission resources corresponding to the first DCI carried by the first PDCCH are orthogonal to the transmission resources corresponding to the second DCI carried by the second PDCCH; that is, the time-frequency resources used by the first DCI are orthogonal to the time-frequency resources used by the second DCI. Therefore, the first UE detects its own corresponding first PDCCH to accurately obtain the first DCI, and the second UE detects its own corresponding second PDCCH to accurately obtain the second DCI.

[0194] For the second UE, after detecting the PSS, SSS, and PBCH in the second frequency domain resources, it obtains the CORESET and search space of the second PDCCH based on the physical layer information and / or higher layer information in the PBCH. Furthermore, the CORESET and search space of the second PDCCH are also located within the second frequency domain resources. When the second UE detects the second PDCCH, it further receives SIB1-2 on the second frequency domain resources based on the scheduling information therein (such as the second DCI). Thus, the second UE completes downlink synchronization and system information acquisition entirely on the second frequency domain resources.

[0195] For the first UE, after detecting the PSS, SSS, and PBCH in the second frequency domain resources, it obtains the CORESET and search space of the first PDCCH based on the physical layer information and / or higher layer information in the PBCH. The CORESET and search space of the first PDCCH are also located within the second frequency domain resources. Then, based on the scheduling information in the first PDCCH, the first UE detects the first SIB (e.g., SIB1-1) in the first frequency domain resources. For example, if the first UE is operating in small core capability mode and, after detecting the PSS, SSS, PBCH, and first PDCCH in the second frequency domain resources, switches to large core capability mode based on the scheduling information in the first PDCCH, it continues to detect the first SIB in the first frequency domain resources. Alternatively, if the first UE enables a second UE capability set (e.g., a small core UE capability set), after detecting the PSS, SSS, PBCH, and first PDCCH in the second frequency domain resources, it enables the first UE capability set (e.g., a large core UE capability set) and switches to the first frequency domain resources to continue detecting the first SIB. Therefore, the first UE completes downlink synchronization and system information acquisition on the first frequency domain resources and the second frequency domain resources, that is, it completes downlink synchronization and system information acquisition through the first signal and the second signal.

[0196] In summary, the method provided in this application supports network devices transmitting signals in different frequency domain resources corresponding to different capability sets. This facilitates the rational use of corresponding frequency domain resources by a first UE and a second UE with different capabilities to obtain downlink signals, and helps the first UE and the second UE achieve downlink synchronization and / or obtain system information through different frequency domain resources. The network device transmits PSS, SSS, PBCH, and PDCCH, which both the first UE and the second UE need to detect, in the second frequency domain resource, saving transmission resources. For the first UE, initially operating in the second frequency domain resource corresponding to a lower capability also saves power consumption. The network device provides subsequent SIBs for the first UE and the second UE respectively in the first and second frequency domain resources, which helps avoid congestion in the second frequency domain resource, improves transmission efficiency, and prevents the first UE with higher capabilities from continuously operating in the second frequency domain resource, thus avoiding a waste of its capabilities.

[0197] Furthermore, based on Figures 2 to 9, and referring to Figure 15, a schematic diagram of a signal transmission method provided by an exemplary embodiment of this application is shown. A network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first signal includes a first SIB. The second signal includes one or more of the following: PSS, SSS, broadcast signal / PBCH, DCI / PDCCH, and a second SIB.

[0198] For example, a network device transmits PSS, SSS, PBCH, and PDCCH using second frequency domain resources, and also transmits a second SIB using second frequency domain resources. The network device transmits a first SIB using first frequency domain resources.

[0199] In some embodiments, the first signal and the second signal may be sequential in time; for example, the first signal may be sent before the second signal, or the second signal may be sent before the first signal. Alternatively, the first signal and the second signal may not be sequential in time; for example, the time resources used by the first signal and the second signal may partially overlap, or the time resources used by the first signal and the second signal may completely overlap, or some signals in the first signal and some signals in the second signal may alternate sequentially in time.

[0200] The second frequency domain resources correspond to the second UE capability set (also known as the minimum UE capability set or small core UE capability set), and the first frequency domain resources correspond to the first UE capability set (also known as the complete UE capability set or large core UE capability set).

[0201] For a second UE that supports the second UE capability set, it can only transmit and / or receive signals in the second frequency domain resources, and cannot transmit and / or receive signals in the first frequency domain resources.

[0202] For a first UE that supports the first UE capability set, it has large-core UE capabilities and can dynamically enable either small-core UE capabilities or large-core UE capabilities. Therefore, if the first UE only enables small-core UE capabilities, it means that the first UE uses the UE capabilities in the second UE capability set, that is, the first UE operates in small-core capability mode, and the first UE transmits and / or receives signals in the second frequency domain resources; if the first UE enables large-core UE capabilities, it means that the first UE uses the UE capabilities in the first UE capability set, that is, the first UE operates in large-core capability mode, and the first UE transmits and / or receives signals in the first frequency domain resources.

[0203] For a second UE supporting the second UE capability set, PSS, SSS, PBCH, and PDCCH detection can only be performed within the second frequency domain resources during the initial access process. For a first UE supporting the first UE capability set, only the second UE capability set can be enabled during the initial access process (e.g., only the small core UE capability set is enabled), and PSS, SSS, PBCH, and PDCCH detection can also be performed within the second frequency domain resources. Therefore, both the first and second UEs detect PSS, SSS, PBCH, and PDCCH within the second frequency domain resources during downlink synchronization. The PSS, SSS, PBCH, and PDCCH transmitted by the network device in the second frequency domain resources are either common or shared between the first and second UEs. Therefore, the PSS transmitted within the second frequency domain resources can also be called the common PSS, meaning that both the first UE and the second UE need to receive and / or detect the PSS in the second frequency domain resources. The SSS transmitted within the second frequency domain resources can also be called the common SSS, meaning that both the first UE and the second UE need to receive and / or detect the SSS in the second frequency domain resources. The PBCH transmitted within the second frequency domain resources can also be called the common PBCH, meaning that both the first UE and the second UE need to receive and / or detect the broadcast signal in the PBCH in the second frequency domain resources. The PDCCH transmitted within the second frequency domain resources can also be called the common PDCCH, meaning that both the first UE and the second UE need to receive and / or detect the scheduling information in the PDCCH in the second frequency domain resources.

[0204] Network devices transmit PSS, SSS, PBCH, and PDCCH in the second frequency domain resources. In other words, network devices transmit SSB and PDCCH in the second frequency domain resources, or SS / PBCH and PDCCH in the second frequency domain resources. PBCH includes reference signals (such as PBCH DMRS), physical layer information (or payload), and higher-layer information (such as MIB). Furthermore, network devices can also transmit scheduling information (such as DCI) in the PDCCH of the second frequency domain resources to schedule the transmission of the second SIB (for example, SIB1-2) within the second frequency domain resources and the first SIB (for example, SIB1-1) within the first frequency domain resources.

[0205] In some embodiments, the PDCCH in the second frequency domain resource includes at least a first DCI and a second DCI. The first DCI is used to schedule the transmission of a first SIB within the first frequency domain resource, and the second DCI is used to schedule the transmission of a second SIB within the second frequency domain resource. The first UE detects the first SIB within the first frequency domain resource based on the received first DCI. The second UE detects the second SIB within the second frequency domain resource based on the received second DCI.

[0206] In some embodiments, the PDCCH includes a first DCI and a second DCI, which employ different DCI formats.

[0207] In some embodiments, the PDCCH in the second frequency domain resource includes a DCI, which includes at least a first indication field and a second indication field. The first indication field is used to schedule a first SIB transmitted within the first frequency domain resource, and the second indication field is used to schedule a second SIB transmitted within the second frequency domain resource. The first UE detects the first SIB within the first frequency domain resource based on the first indication field in the received DCI. The second UE detects the second SIB within the second frequency domain resource based on the second indication field in the received DCI.

[0208] In some embodiments, in the DCI included in the PDCCH, the number of bits in the first indicator field and the number of bits in the second indicator field may be the same or different.

[0209] For the second UE, after detecting the PSS, SSS, and PBCH in the second frequency domain resources, it obtains the CORESET and search space of the PDCCH based on the physical layer information and / or higher layer information in the PBCH. Furthermore, the CORESET and search space of the PDCCH are also located within the second frequency domain resources. When the second UE detects the PDCCH, it further receives SIB1-2 on the second frequency domain resources based on the scheduling information (such as DCI) contained therein. Thus, the second UE completes downlink synchronization and system information acquisition entirely on the second frequency domain resources.

[0210] For the first UE, after detecting the PSS, SSS, and PBCH in the second frequency domain resources, it obtains the CORESET and search space of the PDCCH based on the physical layer information and / or higher layer information in the PBCH. The CORESET and search space of the PDCCH are also located within the second frequency domain resources. Then, based on the scheduling information in the PDCCH, the first UE detects the first SIB (e.g., SIB1-1) in the first frequency domain resources. For example, if the first UE is operating in small core capability mode and, after detecting the PSS, SSS, PBCH, and PDCCH in the second frequency domain resources, switches to large core capability mode based on the scheduling information in the PDCCH, it continues to detect the first SIB in the first frequency domain resources. Alternatively, if the first UE enables a second UE capability set (e.g., a small core UE capability set), after detecting the PSS, SSS, PBCH, and PDCCH in the second frequency domain resources, it enables the first UE capability set (e.g., a large core UE capability set) and switches to the first frequency domain resources to continue detecting the first SIB. Therefore, the first UE completes downlink synchronization and system information acquisition on the first frequency domain resources and the second frequency domain resources, that is, it completes downlink synchronization and system information acquisition through the first signal and the second signal.

[0211] In summary, the method provided in this application supports network devices transmitting signals in different frequency domain resources corresponding to different capability sets. This facilitates the rational use of corresponding frequency domain resources by a first UE and a second UE with different capabilities to obtain downlink signals, and helps the first UE and the second UE achieve downlink synchronization and / or obtain system information through different frequency domain resources. The network device transmits PSS, SSS, PBCH, and PDCCH, which both the first UE and the second UE need to detect, in the second frequency domain resource, saving transmission resources. For the first UE, initially operating in the second frequency domain resource corresponding to a lower capability also saves power consumption. The network device provides subsequent SIBs for the first UE and the second UE respectively in the first and second frequency domain resources, which helps avoid congestion in the second frequency domain resource, improves transmission efficiency, and prevents the first UE with higher capabilities from continuously operating in the second frequency domain resource, thus avoiding a waste of its capabilities.

[0212] Furthermore, based on Figures 2 to 9, and referring to Figure 16, a schematic diagram of a signal transmission method provided by an exemplary embodiment of this application is shown. The network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first signal includes one or more of the following: a first PSS, a first SSS, a first broadcast signal / first PBCH, a first DCI / first PDCCH, and a first SIB. The second signal includes one or more of the following: a second PSS, a second SSS, a second broadcast signal / second PBCH, a second DCI / second PDCCH, and a second SIB.

[0213] For example, the network device transmits at least one of the second PSS, second SSS, second PBCH, second PDCCH, and second SIB using the second frequency domain resources. Furthermore, the network device transmits at least one of the first PSS, first SSS, first PBCH, first PDCCH, and first SIB using the first frequency domain resources.

[0214] In some embodiments, the first signal and the second signal may be sequential in time; for example, the first signal may be sent before the second signal, or the second signal may be sent before the first signal. Alternatively, the first signal and the second signal may not be sequential in time; for example, the time resources used by the first signal and the second signal may partially overlap, or the time resources used by the first signal and the second signal may completely overlap, or some signals in the first signal and some signals in the second signal may alternate sequentially in time.

[0215] The second frequency domain resources correspond to the second UE capability set (also known as the minimum UE capability set or small core UE capability set), and the first frequency domain resources correspond to the first UE capability set (also known as the complete UE capability set or large core UE capability set).

[0216] For a second UE that supports the second UE capability set, it can only transmit and / or receive signals in the second frequency domain resources, and cannot transmit and / or receive signals in the first frequency domain resources.

[0217] For a first UE that supports the first UE capability set, it has large-core UE capabilities and can dynamically enable either small-core UE capabilities or large-core UE capabilities. Therefore, if the first UE only enables small-core UE capabilities, it means that the first UE uses the UE capabilities in the second UE capability set, that is, the first UE operates in small-core capability mode, and the first UE transmits and / or receives signals in the second frequency domain resources; if the first UE enables large-core UE capabilities, it means that the first UE uses the UE capabilities in the first UE capability set, that is, the first UE operates in large-core capability mode, and the first UE transmits and / or receives signals in the first frequency domain resources.

[0218] The network device transmits the second PSS, second SSS, and second PBCH in the second frequency domain resources. That is, the network device transmits the second SSB or second SS / PBCH in the second frequency domain resources. The second PBCH includes a second reference signal (e.g., PBCH DMRS2), second physical layer information (or payload 2), and second higher layer information (e.g., MIB 2). Furthermore, the network device can also transmit scheduling information (e.g., a second DCI) in the second PDCCH of the second frequency domain resources to schedule the second SIB (taking SIB1 as an example, the second SIB could be SIB1-2). For the second UE, after detecting the second PSS, second SSS, and second PBCH in the second frequency domain resources, it obtains the second physical layer information and the second higher layer information. Based on the second physical layer information and / or the second higher layer information, it obtains the CORESET and search space of the second PDCCH. Furthermore, the CORESET and search space of the second PDCCH are also located within the second frequency domain resources. When the second UE detects the second PDCCH, it receives SIB1-2 on the second frequency domain resources according to the scheduling information therein (such as the second DCI). Thus, the second UE completes downlink synchronization and system information acquisition entirely on the second frequency domain resources.

[0219] The network device transmits the first PSS, first SSS, and first PBCH in the first frequency domain resources. That is, the network device transmits the first SSB or first SS / PBCH in the first frequency domain resources. The first PBCH includes a first reference signal (e.g., PBCH DMRS1), first physical layer information (or payload 1), and first higher layer information (e.g., MIB 1). Furthermore, the network device can also transmit scheduling information (e.g., the first DCI) in the first PDCCH of the first frequency domain resources to schedule the first SIB (taking SIB1 as an example, the first SIB might be SIB1-1). For the first UE, during the initial access process, the first UE capability set (e.g., the big core UE capability set) is enabled. After detecting the first PSS, first SSS, and first PBCH in the first frequency domain resources, the first physical layer information and the first higher layer information are obtained. Based on the first physical layer information and / or the first higher layer information, the coreset and search space of the first PDCCH are obtained, and the coreset and search space of the first PDCCH are also located within the first frequency domain resources. When the first UE detects the first PDCCH, it further receives SIB1-1 on the first frequency domain resource according to the scheduling information therein (such as the first DCI). Therefore, the first UE completes downlink synchronization and system information acquisition entirely on the first frequency domain resource. That is, the first UE only receives the first signal and completes downlink synchronization and system information acquisition based on the first signal.

[0220] In summary, the method provided in this application supports network devices transmitting signals in different frequency domain resources corresponding to different capability sets. This facilitates the reasonable use of corresponding frequency domain resources by a first UE and a second UE with different capabilities to obtain downlink signals, and helps the first UE and the second UE achieve downlink synchronization and / or obtain system information through different frequency domain resources. By providing PSS, SSS, PBCH, PDCCH, and SIB to the first UE and the second UE respectively in the first and second frequency domain resources, the network device helps avoid congestion in the second frequency domain resources, improves transmission efficiency, and fully utilizes the large core capabilities of the first UE.

[0221] Figure 17 shows a structural block diagram of a signal transmission device provided in an exemplary embodiment of this application. This device can be implemented as a network device as described above, or as part of a network device as described above. The device includes a transmitting module 1710.

[0222] The transmitting module 1710 is used to: transmit a first signal in a first frequency domain resource, the first frequency domain resource corresponding to a first UE capability set; and transmit a second signal in a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

[0223] In some embodiments, the first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

[0224] In some embodiments, the first signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

[0225] In some embodiments, the second signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

[0226] In some embodiments, the first signal includes one or more of the following: a first secondary synchronization signal, a first broadcast signal, a first DCI, and first system information; the second signal includes one or more of the following: a primary synchronization signal, a second secondary synchronization signal, a second broadcast signal, a second DCI, and second system information.

[0227] In some embodiments, the master synchronization signal is common to both the first terminal device and the second terminal device; wherein the first terminal device corresponds to the first UE capability set and the second terminal device corresponds to the second UE capability set.

[0228] In some embodiments, the first signal includes one or more of the following: a first broadcast signal, a first DCI, and first system information; the second signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal, a second broadcast signal, a second DCI, and second system information.

[0229] In some embodiments, the primary synchronization signal and the secondary synchronization signal are common to both the first terminal device and the second terminal device; wherein the first terminal device corresponds to the first UE capability set and the second terminal device corresponds to the second UE capability set.

[0230] In some embodiments, the primary synchronization signal, the secondary synchronization signal, and the second broadcast signal are common to both the first terminal device and the second terminal device, and the transmission resources of the first broadcast signal are associated with the second broadcast signal; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

[0231] In some embodiments, the second broadcast signal includes at least one of a reference signal, physical layer information, and higher layer information, wherein the physical layer information and / or higher layer information are used to indicate the transmission resources of the first broadcast signal.

[0232] In some embodiments, the first signal includes one or more of the following: a first DCI, a first system information; the second signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal, a broadcast signal, a second DCI, a second system information.

[0233] In some embodiments, the primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

[0234] In some embodiments, the first signal includes first system information; the second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, broadcast signal, DCI, and second system information.

[0235] In some embodiments, the primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

[0236] In some embodiments, DCI includes a first DCI and a second DCI; the first DCI corresponds to a first terminal device, and the first system information is indicated by the first DCI; the second DCI corresponds to a second terminal device, and the second system information is indicated by the second DCI.

[0237] In some embodiments, the first DCI and the second DCI are scrambled using different RNTIs; and / or, the transmission resources corresponding to the first DCI are orthogonal to the transmission resources corresponding to the second DCI.

[0238] In some embodiments, the primary synchronization signal, secondary synchronization signal, broadcast signal, and DCI are common to both the first terminal device and the second terminal device, and the first system information and the second system information are indicated by the DCI.

[0239] In some embodiments, the first signal includes one or more of the following: a first primary synchronization signal, a first secondary synchronization signal, a first broadcast signal, a first DCI, and first system information; the second signal includes one or more of the following: a second primary synchronization signal, a second secondary synchronization signal, a second broadcast signal, a second DCI, and second system information.

[0240] In some embodiments, the first frequency domain resource and the second frequency domain resource satisfy one or more of the following: the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource; the center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain start position of the second frequency domain resource; the frequency domain end position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; and the first frequency domain resource and the second frequency domain resource do not overlap in the frequency domain.

[0241] In some embodiments, the apparatus further includes a processing module 1730 for determining a first frequency domain resource and / or a second frequency domain resource. In some embodiments, the processing module 1730 is used to determine a first signal transmitted on the first frequency domain resource and / or a second signal transmitted on the second frequency domain resource.

[0242] In some embodiments, the apparatus further includes a receiving module 1750 for receiving uplink signals on an uplink channel. The uplink channel includes one or more of the following: a random access channel, an uplink data channel, an uplink shared channel, an uplink traffic channel, and an uplink control channel. For example, the receiving module 1750 receives random access signals on the random access channel, receives uplink data on the uplink data channel, the uplink shared channel, or the uplink traffic channel, and receives uplink control information and / or uplink reports and / or acknowledgment signaling (such as ACK / NACK) on the uplink control channel.

[0243] The steps performed by the sending module 1710, the processing module 1730, and the receiving module 1750 are similar to one or more steps performed by the network device in the embodiments shown in Figures 1 to 16 above. The relevant content of the various embodiments above also applies to the device shown in Figure 17, and will not be repeated here.

[0244] In summary, the apparatus provided in this application supports transmitting signals in different frequency domain resources corresponding to different capability sets, which facilitates the first UE and the second UE with different capabilities to reasonably use the corresponding frequency domain resources to obtain downlink signals. This helps the first UE and the second UE to achieve downlink synchronization and / or obtain system information through different frequency domain resources, thereby improving the resource utilization efficiency and transmission efficiency in the communication system. It can save transmission resources and avoid some resource congestion.

[0245] Figure 18 shows a structural block diagram of a signal transmission apparatus provided in an exemplary embodiment of this application, which can be implemented as the first UE described above, or as part of the first UE described above. The apparatus includes a receiving module 1810.

[0246] The receiving module 1810 is configured to: receive a first signal in a first frequency domain resource, and / or receive a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

[0247] In some embodiments, the first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

[0248] In some embodiments, the first signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information;

[0249] In some embodiments, the second signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

[0250] In some embodiments, the receiving module 1810 is configured to receive a first signal in a first frequency domain resource, the first signal including one or more of the following: a first auxiliary synchronization signal, a first broadcast signal, a first DCI, and first system information; the receiving module 1810 is also configured to receive a second signal in a second frequency domain resource, the second signal including at least a primary synchronization signal.

[0251] In some embodiments, the master synchronization signal is common to both the device and the second terminal device; wherein the device corresponds to the first UE capability set and the second terminal device corresponds to the second UE capability set.

[0252] In some embodiments, the receiving module 1810 is configured to receive a first signal in the first frequency domain resource after receiving the primary synchronization signal in the second frequency domain resource. The first signal includes one or more of the following: a first secondary synchronization signal, a first broadcast signal, a first DCI, and first system information.

[0253] In some embodiments, the receiving module 1810 is configured to receive a first signal in a first frequency domain resource, the first signal including one or more of the following: a first broadcast signal, a first DCI, and first system information; the receiving module 1810 is also configured to receive a second signal in a second frequency domain resource, the second signal including at least one or more of the following: a primary synchronization signal, a secondary synchronization signal, and a second broadcast signal.

[0254] In some embodiments, the primary synchronization signal and the secondary synchronization signal are common to both the device and the second terminal device; wherein the device corresponds to the first UE capability set and the second terminal device corresponds to the second UE capability set.

[0255] In some embodiments, the receiving module 1810 is configured to receive a first signal in the first frequency domain resource after receiving a primary synchronization signal and a secondary synchronization signal in the second frequency domain resource. The first signal includes one or more of the following: a first broadcast signal, a first DCI, and first system information.

[0256] In some embodiments, the primary synchronization signal, the secondary synchronization signal, and the second broadcast signal are common to both the device and the terminal device, and the transmission resources of the first broadcast signal are associated with the second broadcast signal; wherein, the device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

[0257] In some embodiments, the receiving module 1810 is configured to receive a first signal in the first frequency domain resource after receiving a primary synchronization signal, a secondary synchronization signal, and a second broadcast signal in the second frequency domain resource. The first signal includes one or more of the following: a first broadcast signal, a first DCI, and first system information.

[0258] In some embodiments, the second broadcast signal includes at least one of a reference signal, physical layer information, and higher layer information, wherein the physical layer information and / or higher layer information are used to indicate the transmission resources of the first broadcast signal.

[0259] In some embodiments, the apparatus further includes a processing module 1830 for determining the transmission resources of the first broadcast signal based on the second broadcast signal.

[0260] In some embodiments, the receiving module 1810 is configured to receive a first signal in a first frequency domain resource, the first signal including one or more of the following: a first DCI, first system information; the receiving module 1810 is also configured to receive a second signal in a second frequency domain resource, the second signal including at least one or more of the following: a primary synchronization signal, a secondary synchronization signal, a broadcast signal.

[0261] In some embodiments, the primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the device and the second terminal device; wherein the device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

[0262] In some embodiments, the receiving module 1810 is configured to receive a first signal in the first frequency domain resource after receiving a primary synchronization signal, a secondary synchronization signal and a broadcast signal in the second frequency domain resource. The first signal includes one or more of the following: a first DCI and first system information.

[0263] In some embodiments, the receiving module 1810 is configured to receive a first signal in a first frequency domain resource, the first signal including one or more of the following: first system information; the receiving module 1810 is also configured to receive a second signal in a second frequency domain resource, the second signal including at least one or more of the following: primary synchronization signal, secondary synchronization signal, broadcast signal, DCI.

[0264] In some embodiments, the primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the device and the second terminal device; wherein the device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

[0265] In some embodiments, the DCI includes a first DCI and a second DCI. The receiving module 1810 is configured to receive a first signal in the first frequency domain resource after receiving a primary synchronization signal, a secondary synchronization signal, a broadcast signal and the first DCI in the second frequency domain resource. The first signal includes first system information, which is indicated by the first DCI.

[0266] In some embodiments, the first DCI and the second DCI are scrambled using different RNTIs; and / or, the transmission resources corresponding to the first DCI are orthogonal to the transmission resources corresponding to the second DCI.

[0267] In some embodiments, the primary synchronization signal, secondary synchronization signal, broadcast signal, and DCI are common to both the device and the second terminal equipment, and the first system information is indicated by the DCI.

[0268] In some embodiments, the receiving module 1810 is configured to receive a first signal in the first frequency domain resource after receiving a primary synchronization signal, a secondary synchronization signal, a broadcast signal and a DCI in the second frequency domain resource. The first signal includes first system information.

[0269] In some embodiments, the receiving module 1810 is configured to receive a first signal within a first frequency domain resource. The first signal includes one or more of the following: a first primary synchronization signal, a first secondary synchronization signal, a first broadcast signal, a first DCI, and first system information.

[0270] In some embodiments, the first frequency domain resource and the second frequency domain resource satisfy one or more of the following: the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource; the center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain start position of the second frequency domain resource; the frequency domain end position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; and the first frequency domain resource and the second frequency domain resource do not overlap in the frequency domain.

[0271] In some embodiments, the processing module 1830 is further configured to determine the CORESET and / or search space of the PDCCH based on the received PBCH / broadcast signal.

[0272] In some embodiments, the apparatus further includes a transmitting module 1850 for transmitting uplink signals on an uplink channel. The uplink channel includes one or more of the following: a random access channel, an uplink data channel, an uplink shared channel, an uplink traffic channel, and an uplink control channel. For example, the transmitting module 1850 transmits random access signals on the random access channel, transmits uplink data on the uplink data channel, the uplink shared channel, or the uplink traffic channel, and transmits uplink control information and / or uplink reports and / or acknowledgment signaling (such as ACK / NACK) on the uplink control channel.

[0273] In some embodiments, the sending module 1850 is further configured to send uplink data based on scheduling information.

[0274] In some embodiments, the receiving module 1810 is further configured to receive downlink data scheduled by the network device.

[0275] The steps performed by the receiving module 1810, the processing module 1830, and the sending module 1850 are as follows: please refer to one or more steps performed by the first UE in the embodiments shown in Figures 1 to 16 above. The relevant content of the various embodiments above is also applicable to the device shown in Figure 18, and will not be repeated here.

[0276] In summary, the apparatus provided in this application supports receiving signals in different frequency domain resources corresponding to different capability sets, rationally utilizing frequency domain resources based on its own capabilities, and improving resource utilization efficiency and transmission efficiency within the communication system. Furthermore, it supports using a second UE capability set to receive signals in the second frequency domain resources to save power and improve resource utilization efficiency, and also supports flexible switching to the first frequency domain resources to receive signals using the first UE capability set to avoid congestion and improve transmission efficiency.

[0277] Figure 19 shows a structural block diagram of a signal transmission apparatus provided in an exemplary embodiment of this application, which can be implemented as the second UE described above, or as part of the second UE described above. The apparatus includes a receiving module 1910.

[0278] The receiving module 1910 is used to receive a second signal within the second frequency domain resources, which correspond to the second UE capability set.

[0279] In some embodiments, the second UE capability set satisfies one or more of the following: the UE capabilities in the second UE capability set are lower than the UE capabilities in the first UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

[0280] In some embodiments, the second signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

[0281] In some embodiments, the receiving module 1910 is used to receive a second signal in the second frequency domain resources. The second signal includes one or more of the following: a primary synchronization signal, a second secondary synchronization signal, a second broadcast signal, a second DCI, and second system information. The primary synchronization signal is common to the first terminal device and the apparatus. The first terminal device corresponds to the first UE capability set, and the apparatus corresponds to the second UE capability set.

[0282] In some embodiments, the receiving module 1910 is used to receive a second signal in the second frequency domain resources. The second signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal, a second broadcast signal, a second DCI, and second system information. The primary synchronization signal and the secondary synchronization signal are common to the first terminal device and the apparatus. The first terminal device corresponds to the first UE capability set, and the apparatus corresponds to the second UE capability set.

[0283] In some embodiments, the receiving module 1910 is configured to receive a second signal within a second frequency domain resource. The second signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal, a second broadcast signal, a second DCI, and second system information. The primary synchronization signal, the secondary synchronization signal, and the second broadcast signal are common to the first terminal device and the apparatus, and the transmission resources of the first broadcast signal transmitted within the first frequency domain resource are associated with the second broadcast signal. The first terminal device corresponds to a first UE capability set, the first frequency domain resource corresponds to the first UE capability set, and the apparatus corresponds to a second UE capability set.

[0284] In some embodiments, the receiving module 1910 is used to receive a second signal in a second frequency domain resource. The second signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal, a broadcast signal, a second DCI, and second system information. The primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to the first terminal device and the apparatus. The first terminal device corresponds to a first UE capability set, and the apparatus corresponds to a second UE capability set.

[0285] In some embodiments, the receiving module 1910 is used to receive a second signal in the second frequency domain resources. The second signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal, a broadcast signal, a DCI, and second system information; wherein the primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to the first terminal device and the apparatus, the first terminal device corresponds to the first UE capability set, and the apparatus corresponds to the second UE capability set.

[0286] In some embodiments, the DCI includes a first DCI and a second DCI, and the second system information is indicated by the second DCI; the first DCI and the second DCI are scrambled with different RNTIs; and / or, the transmission resources corresponding to the first DCI are orthogonal to the transmission resources corresponding to the second DCI.

[0287] In some embodiments, the primary synchronization signal, secondary synchronization signal, broadcast signal, and DCI are common to the first terminal equipment and apparatus, and the second system information is indicated by the DCI.

[0288] In some embodiments, the receiving module 1910 is configured to receive a second signal within a second frequency domain resource, the second signal including one or more of the following: a second primary synchronization signal, a second secondary synchronization signal, a second broadcast signal, a second DCI, and second system information.

[0289] In some embodiments, the first frequency domain resource and the second frequency domain resource satisfy one or more of the following: the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource; the center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain start position of the second frequency domain resource; the frequency domain end position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; the frequency domain start position of the first frequency domain resource is higher than the frequency domain end position of the second frequency domain resource; and the first frequency domain resource and the second frequency domain resource do not overlap in the frequency domain.

[0290] In some embodiments, the apparatus further includes a processing module 1930 for determining the CORESET and / or search space of the PDCCH based on the received PBCH / broadcast signal.

[0291] In some embodiments, the apparatus further includes a transmitting module 1950 for transmitting uplink signals on an uplink channel. The uplink channel includes one or more of the following: a random access channel, an uplink data channel, an uplink shared channel, an uplink traffic channel, and an uplink control channel. For example, the transmitting module 1950 transmits random access signals on the random access channel, transmits uplink data on the uplink data channel, the uplink shared channel, or the uplink traffic channel, and transmits uplink control information and / or uplink reports and / or acknowledgment signaling (such as ACK / NACK) on the uplink control channel.

[0292] In some embodiments, the sending module 1950 is further configured to send uplink data based on scheduling information.

[0293] In some embodiments, the receiving module 1910 is further configured to receive downlink data scheduled by the network device.

[0294] The steps performed by the receiving module 1910, processing module 1930, and sending module 1950 are similar to one or more steps performed by the second UE in the embodiments shown in Figures 1 to 16 above. The relevant content of the various embodiments above also applies to the device shown in Figure 19, and will not be repeated here.

[0295] In summary, the apparatus provided in this application supports receiving downlink signals within the frequency domain resources corresponding to its own capability set, and rationally uses frequency domain resources based on its own capabilities, thereby improving resource utilization efficiency and transmission efficiency within the communication system.

[0296] It should be noted that the apparatus provided in the above embodiments is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the communication device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept.

[0297] Figure 20 shows a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application. The communication device 2000 includes at least one of the following: a receiver 2001, a transmitter 2002, a processor 2003, a memory 2004, and a bus (not shown in the figure).

[0298] In this design, receiver 2001 is used to implement the receiving function, and transmitter 2002 is used to implement the transmitting function. Optionally, receiver 2001 and transmitter 2002 can be implemented as a communication component, which can be a communication chip, and can be called a transceiver. Optionally, receiver 2001 and transmitter 2002 can be implemented as a wireless communication component and / or a wired communication component. Optionally, the wireless communication component includes a wireless communication chip and / or a radio frequency antenna. Optionally, the wired communication component includes a wired communication chip and / or a wired interface.

[0299] The processor 2003 includes one or more processing cores, and the processor 2003 executes various functional applications and information processing by running software programs and modules.

[0300] In some embodiments, the communication device 2000 is implemented as a network device, used to perform some or all of the steps performed by the network device. The receiver 2001 can be used to implement the functions and steps of the receiving module 1750, the transmitter 2002 can be used to implement the functions and steps of the sending module 1710, and the processor 2003 can be used to implement the functions and steps of the processing module 1730.

[0301] In some embodiments, the communication device 2000 is implemented as a first UE, used to perform some or all of the steps performed by the first UE. The receiver 2001 can be used to implement the functions and steps of the receiving module 1810, the transmitter 2002 can be used to implement the functions and steps of the sending module 1850, and the processor 2003 can be used to implement the functions and steps of the processing module 1830.

[0302] In some embodiments, the communication device 2000 is implemented as a second UE, used to perform some or all of the steps performed by the second UE. The receiver 2001 can be used to implement the functions and steps of the receiving module 1910, the transmitter 2002 can be used to implement the functions and steps of the sending module 1950, and the processor 2003 can be used to implement the functions and steps of the processing module 1930.

[0303] The memory 2004 can be used to store a computer program executed by the processor 2003, which is used to execute the computer program to implement the various steps in the above method embodiments.

[0304] Furthermore, the memory 2004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0305] In some embodiments, the memory 2004 may be connected to the processor 2003, the receiver 2001, and the transmitter 2002.

[0306] In some embodiments, the receiver 2001 independently receives signals / data, or the processor 2003 controls the receiver 2001 to receive signals / data, or the processor 2003 requests the receiver 2001 to receive signals / data, or the processor 2003 cooperates with the receiver 2001 to receive signals / data.

[0307] In some embodiments, the transmitter 2002 independently transmits signals / data, or the processor 2003 controls the transmitter 2002 to transmit signals / data, or the processor 2003 requests the transmitter 2002 to transmit signals / data, or the processor 2003 cooperates with the transmitter 2002 to transmit signals / data.

[0308] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0309] In one exemplary embodiment of this application, a chip is also provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is run on a communication device, is used to implement the signal transmission methods provided in the above-described method embodiments.

[0310] In some embodiments, this application provides a chip, the chip including programmable logic circuits and / or program instructions, such that a network device equipped with the chip transmits a first signal in a first frequency domain resource and transmits a second signal in a second frequency domain resource, the first frequency domain resource corresponding to a first terminal device (UE) capability set, and the second frequency domain resource corresponding to a second UE capability set.

[0311] Furthermore, the chip can be used to implement the functions and steps of at least one of the above-described transmitting module 1710, processing module 1730, and receiving module 1750. For example, the chip can be used to implement the functions and steps of the above-described transmitting module 1710 and processing module 1730. For example, the chip can be used to implement the functions and steps of the above-described transmitting module 1710 and receiving module 1750. For example, the chip can be used to implement the functions and steps of the above-described transmitting module 1710, processing module 1730, and receiving module 1750. For details, please refer to one or more steps performed by the network device in the embodiments shown in Figures 1 to 17 above.

[0312] In some embodiments, this application provides a chip, the chip including programmable logic circuits and / or program instructions, such that a first UE on which the chip is installed receives a first signal in a first frequency domain resource and / or receives a second signal in a second frequency domain resource; wherein, the first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

[0313] Furthermore, the chip can be used to implement the functions and steps of at least one of the receiving module 1810, processing module 1830, and transmitting module 1850 described above. For example, the chip can be used to implement the functions and steps of the receiving module 1810 and processing module 1830. For example, the chip can be used to implement the functions and steps of the receiving module 1810 and transmitting module 1850 described above. For example, the chip can be used to implement the functions and steps of the receiving module 1810, processing module 1830, and transmitting module 1850 described above. For details, please refer to one or more steps performed by the first UE in the embodiments shown in Figures 1 to 18 above.

[0314] In some embodiments, this application provides a chip, the chip including programmable logic circuitry and / or program instructions, such that a second UE on which the chip is installed receives a second signal in a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

[0315] Furthermore, the chip can be used to implement the functions and steps of at least one of the receiving module 1910, processing module 1930, and transmitting module 1950 described above. For example, the chip can be used to implement the functions and steps of the receiving module 1910 and processing module 1930. For example, the chip can be used to implement the functions and steps of the receiving module 1910 and transmitting module 1950 described above. For example, the chip can be used to implement the functions and steps of the receiving module 1910, processing module 1930, and transmitting module 1950 described above. For details, please refer to one or more steps performed by the second UE in the embodiments shown in Figures 1 to 19 above.

[0316] In one exemplary embodiment of this application, a computer-readable storage medium is also provided, which stores at least one program, which is loaded and executed by a processor to implement the signal transmission method provided in the above-described method embodiments.

[0317] In some embodiments, this application provides a computer-readable storage medium storing a computer program loaded and executed by a network device, such that the network device transmits a first signal in a first frequency domain resource and a second signal in a second frequency domain resource, wherein the first frequency domain resource corresponds to a first terminal device (UE) capability set and the second frequency domain resource corresponds to a second UE capability set.

[0318] Furthermore, the computer-readable storage medium can be used to implement the functions and steps of at least one of the transmitting module 1710, processing module 1730, and receiving module 1750 described above. For example, the computer-readable storage medium can be used to implement the functions and steps of the transmitting module 1710 and processing module 1730 described above. For example, the computer-readable storage medium can be used to implement the functions and steps of the transmitting module 1710 and receiving module 1750 described above. For example, the computer-readable storage medium can be used to implement the functions and steps of the transmitting module 1710, processing module 1730, and receiving module 1750 described above. For details, please refer to one or more steps performed by the network device in the embodiments shown in Figures 1 to 17 above.

[0319] In some embodiments, this application provides a computer-readable storage medium storing a computer program, which is loaded and executed by a first UE to enable the first UE to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set and the second frequency domain resource corresponds to a second UE capability set.

[0320] Furthermore, the computer-readable storage medium can be used to implement the functions and steps of at least one of the receiving module 1810, processing module 1830, and transmitting module 1850 described above. For example, the computer-readable storage medium can be used to implement the functions and steps of the receiving module 1810 and processing module 1830. For example, the computer-readable storage medium can be used to implement the functions and steps of the receiving module 1810 and transmitting module 1850 described above. For example, the computer-readable storage medium can be used to implement the functions and steps of the receiving module 1810, processing module 1830, and transmitting module 1850 described above. For details, please refer to one or more steps performed by the first UE in the embodiments shown in Figures 1 to 18 above.

[0321] In some embodiments, this application provides a computer-readable storage medium storing a computer program that is loaded and executed by a second UE to enable the second UE to receive a second signal within a second frequency domain resource, the second frequency domain resource corresponding to a set of capabilities of the second UE.

[0322] Furthermore, the computer-readable storage medium can be used to implement the functions and steps of at least one of the receiving module 1910, processing module 1930, and transmitting module 1950 described above. For example, the computer-readable storage medium can be used to implement the functions and steps of the receiving module 1910 and processing module 1930. For example, the computer-readable storage medium can be used to implement the functions and steps of the receiving module 1910 and transmitting module 1950 described above. For example, the computer-readable storage medium can be used to implement the functions and steps of the receiving module 1910, processing module 1930, and transmitting module 1950 described above. For details, please refer to one or more steps performed by the second UE in the embodiments shown in Figures 1 to 19 above.

[0323] In one exemplary embodiment of this application, a computer program product is also provided. The computer program product includes computer instructions stored in a computer-readable storage medium. A processor retrieves the computer instructions from the computer-readable storage medium and executes the computer instructions to implement the signal transmission method provided in the above-described method embodiments.

[0324] In some embodiments, this application provides a computer program product including computer instructions stored in a computer-readable storage medium. A processor of a network device obtains the computer instructions from the computer-readable storage medium and executes the computer instructions to transmit a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first frequency domain resource corresponds to a first terminal device (UE) capability set, and the second frequency domain resource corresponds to a second UE capability set.

[0325] Furthermore, the computer program product can be used to implement the functions and steps of at least one of the above-described sending module 1710, processing module 1730, and receiving module 1750. For example, the computer program product can be used to implement the functions and steps of the above-described sending module 1710 and processing module 1730. For example, the computer program product can be used to implement the functions and steps of the above-described sending module 1710 and receiving module 1750. For example, the computer program product can be used to implement the functions and steps of the above-described sending module 1710, processing module 1730, and receiving module 1750. For details, please refer to one or more steps performed by the network device in the embodiments shown in Figures 1 to 17 above.

[0326] In some embodiments, this application provides a computer program product comprising computer instructions stored in a computer-readable storage medium. A processor of a first UE obtains the computer instructions from the computer-readable storage medium and executes the computer instructions to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource. The first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

[0327] Furthermore, the computer program product can be used to implement the functions and steps of at least one of the receiving module 1810, processing module 1830, and transmitting module 1850. For example, the computer program product can be used to implement the functions and steps of the receiving module 1810 and processing module 1830. For example, the computer program product can be used to implement the functions and steps of the receiving module 1810 and transmitting module 1850. For example, the computer program product can be used to implement the functions and steps of the receiving module 1810, processing module 1830, and transmitting module 1850. For details, please refer to one or more steps performed by the first UE in the embodiments shown in Figures 1 to 18 above.

[0328] In some embodiments, this application provides a computer program product including computer instructions stored in a computer-readable storage medium. A processor of a second UE obtains the computer instructions from the computer-readable storage medium and executes the computer instructions to receive a second signal in a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

[0329] Furthermore, the computer program product can be used to implement the functions and steps of at least one of the receiving module 1910, processing module 1930, and transmitting module 1950. For example, the computer program product can be used to implement the functions and steps of the receiving module 1910 and processing module 1930. For example, the computer program product can be used to implement the functions and steps of the receiving module 1910 and transmitting module 1950. For example, the computer program product can be used to implement the functions and steps of the receiving module 1910, processing module 1930, and transmitting module 1950. For details, please refer to one or more steps performed by the second UE in the embodiments shown in Figures 1 to 19 above.

[0330] In one exemplary embodiment of this application, a computer program is also provided, the computer program including computer instructions, the computer instructions being stored in a computer-readable storage medium, a processor retrieving the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to implement the signal transmission method provided in the above-described method embodiments.

[0331] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0332] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A signal transmission method, characterized in that, The method is performed by a network device, and the method includes: The first signal is transmitted within the first frequency domain resource, which corresponds to the first terminal device (UE) capability set. The second signal is transmitted within the second frequency domain resources, which correspond to the second UE capability set.

2. The method according to claim 1, characterized in that, The first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

3. The method according to claim 1 or 2, characterized in that, The first signal includes one or more of the following: synchronization signal, broadcast signal, downlink control information (DCI), system information; and / or, the second signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

4. The method according to any one of claims 1 to 3, characterized in that, The first signal includes one or more of the following: a first auxiliary synchronization signal, a first broadcast signal, a first DCI, and first system information; The second signal includes one or more of the following: primary synchronization signal, second secondary synchronization signal, second broadcast signal, second DCI, and second system information.

5. The method according to claim 4, characterized in that, The primary synchronization signal is common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

6. The method according to any one of claims 1 to 3, characterized in that, The first signal includes one or more of the following: a first broadcast signal, a first DCI, and first system information; The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, second broadcast signal, second DCI, and second system information.

7. The method according to claim 6, characterized in that, The primary synchronization signal and the secondary synchronization signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

8. The method according to claim 6, characterized in that, The primary synchronization signal, the secondary synchronization signal, and the second broadcast signal are common to both the first terminal device and the second terminal device. The transmission resources of the first broadcast signal are associated with the second broadcast signal. The first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

9. The method according to claim 8, characterized in that, The second broadcast signal includes at least one of a reference signal, physical layer information, and higher layer information, wherein the physical layer information and / or the higher layer information are used to indicate the transmission resources of the first broadcast signal.

10. The method according to any one of claims 1 to 3, characterized in that, The first signal includes one or more of the following: first DCI, first system information; The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, broadcast signal, second DCI, and second system information.

11. The method according to claim 10, characterized in that, The primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

12. The method according to any one of claims 1 to 3, characterized in that, The first signal includes first system information; The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, broadcast signal, DCI, and second system information.

13. The method according to claim 12, characterized in that, The primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

14. The method according to claim 12 or 13, characterized in that, The DCI includes a first DCI and a second DCI; The first DCI corresponds to the first terminal device, and the first system information is indicated by the first DCI; The second DCI corresponds to the second terminal device, and the second system information is indicated by the second DCI.

15. The method according to claim 14, characterized in that, The first DCI and the second DCI are scrambled using different Radio Network Temporary Identifiers (RNTI); and / or, the transmission resources corresponding to the first DCI are orthogonal to the transmission resources corresponding to the second DCI.

16. The method according to claim 12 or 13, characterized in that, The primary synchronization signal, the secondary synchronization signal, the broadcast signal, and the DCI are common to both the first and second terminal devices, and the first system information and the second system information are indicated by the DCI.

17. The method according to any one of claims 1 to 3, characterized in that, The first signal includes one or more of the following: a first primary synchronization signal, a first secondary synchronization signal, a first broadcast signal, a first DCI, and first system information; The second signal includes one or more of the following: a second primary synchronization signal, a second secondary synchronization signal, a second broadcast signal, a second DCI, and second system information.

18. The method according to any one of claims 1 to 17, characterized in that, The center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; and / or, the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource.

19. A signal transmission method, characterized in that, The method is executed by a first terminal device, and the method includes: Receive a first signal in a first frequency domain resource, and / or receive a second signal in a second frequency domain resource; Wherein, the first frequency domain resource corresponds to the first UE capability set, and the second frequency domain resource corresponds to the second UE capability set.

20. The method according to claim 19, characterized in that, The first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

21. The method according to claim 19 or 20, characterized in that, The first signal includes one or more of the following: synchronization signal, broadcast signal, downlink control information (DCI), system information; and / or, the second signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

22. The method according to any one of claims 19 to 21, characterized in that, The first signal includes one or more of the following: a first auxiliary synchronization signal, a first broadcast signal, a first DCI, and first system information; The second signal includes at least the main synchronization signal.

23. The method according to claim 22, characterized in that, The primary synchronization signal is common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

24. The method according to claim 22 or 23, characterized in that, Receiving the first signal within the first frequency domain resources includes: After receiving the master synchronization signal in the second frequency domain resource, the first signal is received in the first frequency domain resource.

25. The method according to any one of claims 19 to 21, characterized in that, The first signal includes one or more of the following: a first broadcast signal, a first DCI, and first system information; The second signal includes at least one or more of the following: a primary synchronization signal, a secondary synchronization signal, and a second broadcast signal.

26. The method according to claim 25, characterized in that, The primary synchronization signal and the secondary synchronization signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

27. The method according to claim 26, characterized in that, Receiving the first signal within the first frequency domain resources includes: After receiving the primary synchronization signal and the secondary synchronization signal in the second frequency domain resource, the first signal is received in the first frequency domain resource.

28. The method according to claim 25, characterized in that, The primary synchronization signal, the secondary synchronization signal, and the second broadcast signal are common to both the first terminal device and the second terminal device. The transmission resources of the first broadcast signal are associated with the second broadcast signal. The first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

29. The method according to claim 28, characterized in that, Receiving the first signal within the first frequency domain resources includes: After receiving the primary synchronization signal, the secondary synchronization signal, and the second broadcast signal in the second frequency domain resource, the first signal is received in the first frequency domain resource.

30. The method according to claim 28 or 29, characterized in that, The second broadcast signal includes at least one of a reference signal, physical layer information, and higher layer information, wherein the physical layer information and / or the higher layer information are used to indicate the transmission resources of the first broadcast signal.

31. The method according to any one of claims 19 to 21, characterized in that, The first signal includes one or more of the following: first DCI, first system information; The second signal includes at least one or more of the following: a primary synchronization signal, a secondary synchronization signal, and a broadcast signal.

32. The method according to claim 31, characterized in that, The primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

33. The method according to claim 31 or 32, characterized in that, Receiving the first signal within the first frequency domain resources includes: After receiving the primary synchronization signal, the secondary synchronization signal, and the broadcast signal in the second frequency domain resource, the first signal is received in the first frequency domain resource.

34. The method according to any one of claims 19 to 21, characterized in that, The first signal includes first system information; The second signal includes at least one or more of the following: primary synchronization signal, secondary synchronization signal, broadcast signal, and DCI.

35. The method according to claim 34, characterized in that, The primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device; wherein, the first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

36. The method according to claim 34 or 35, characterized in that, The DCI includes a first DCI and a second DCI; Receiving the first signal within the first frequency domain resources includes: After receiving the primary synchronization signal, the secondary synchronization signal, the broadcast signal, and the first DCI within the second frequency domain resource, the first signal is received within the first frequency domain resource; wherein the first system information is indicated by the first DCI.

37. The method according to claim 36, characterized in that, The first DCI and the second DCI are scrambled using different Radio Network Temporary Identifiers (RNTI); and / or, the transmission resources corresponding to the first DCI are orthogonal to the transmission resources corresponding to the second DCI.

38. The method according to claim 34 or 35, characterized in that, The primary synchronization signal, the secondary synchronization signal, the broadcast signal, and the DCI are common to both the first terminal device and the second terminal device, and the first system information is indicated by the DCI.

39. The method according to claim 38, characterized in that, Receiving the first signal within the first frequency domain resources includes: After receiving the primary synchronization signal, the secondary synchronization signal, the broadcast signal, and the DCI in the second frequency domain resource, the first signal is received in the first frequency domain resource.

40. The method according to any one of claims 19 to 21, characterized in that, The first signal includes one or more of the following: a first primary synchronization signal, a first secondary synchronization signal, a first broadcast signal, a first DCI, and first system information.

41. The method according to any one of claims 19 to 40, characterized in that, The center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; and / or, the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource.

42. A signal transmission method, characterized in that, The method is executed by a second terminal device, and the method includes: The second signal is received within the second frequency domain resources, which correspond to the second UE capability set.

43. The method according to claim 42, characterized in that, The second UE capability set satisfies one or more of the following: The UE capabilities in the second UE capability set are lower than those in the first UE capability set; The first UE capability set includes at least the second UE capability set; The first UE capability set is a superset of the second UE capability set.

44. The method according to claim 42 or 43, characterized in that, The second signal includes one or more of the following: synchronization signal, broadcast signal, downlink control information (DCI), and system information.

45. The method according to any one of claims 42 to 44, characterized in that, The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, second broadcast signal, second DCI, and second system information; The primary synchronization signal is common to both the first terminal device and the second terminal device. The first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

46. ​​The method according to any one of claims 42 to 44, characterized in that, The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, second broadcast signal, second DCI, and second system information; The primary synchronization signal and the secondary synchronization signal are common to both the first terminal device and the second terminal device. The first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

47. The method according to any one of claims 42 to 44, characterized in that, The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, second broadcast signal, second DCI, and second system information; The primary synchronization signal, the secondary synchronization signal, and the second broadcast signal are common to both the first terminal device and the second terminal device, and the transmission resources of the first broadcast signal transmitted within the first frequency domain resources are associated with the second broadcast signal. The first terminal device corresponds to the first UE capability set, the first frequency domain resource corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

48. The method according to any one of claims 42 to 44, characterized in that, The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, broadcast signal, second DCI, and second system information; The primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device. The first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

49. The method according to any one of claims 42 to 44, characterized in that, The second signal includes one or more of the following: primary synchronization signal, secondary synchronization signal, broadcast signal, DCI, and second system information; The primary synchronization signal, the secondary synchronization signal, and the broadcast signal are common to both the first terminal device and the second terminal device. The first terminal device corresponds to the first UE capability set, and the second terminal device corresponds to the second UE capability set.

50. The method according to claim 49, characterized in that, The DCI includes a first DCI and a second DCI, and the second system information is indicated by the second DCI; The first DCI and the second DCI are scrambled using different Radio Network Temporary Identifiers (RNTIs); And / or, the transmission resources corresponding to the first DCI are orthogonal to the transmission resources corresponding to the second DCI.

51. The method according to claim 49, characterized in that, The primary synchronization signal, the secondary synchronization signal, the broadcast signal, and the DCI are common to both the first terminal device and the second terminal device, and the second system information is indicated by the DCI.

52. The method according to any one of claims 42 to 44, characterized in that, The second signal includes one or more of the following: a second primary synchronization signal, a second secondary synchronization signal, a second broadcast signal, a second DCI, and second system information.

53. The method according to any one of claims 42 to 52, characterized in that, The center frequency of the second frequency domain resource is lower than the center frequency of the first frequency domain resource; and / or, the bandwidth of the second frequency domain resource is less than the bandwidth of the first frequency domain resource.

54. A signal transmission device, characterized in that, The device includes: The transmitting module is used to transmit a first signal in a first frequency domain resource and a second signal in a second frequency domain resource, wherein the first frequency domain resource corresponds to a first terminal device (UE) capability set and the second frequency domain resource corresponds to a second UE capability set.

55. The apparatus according to claim 54, characterized in that, The first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

56. The apparatus according to claim 54 or 55, characterized in that, The first signal includes one or more of the following: synchronization signal, broadcast signal, downlink control information (DCI), system information; and / or, the second signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

57. The apparatus according to any one of claims 54 to 56, characterized in that, The center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; and / or, the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource.

58. A signal transmission device, characterized in that, The device includes: A receiving module is configured to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource. Wherein, the first frequency domain resource corresponds to the first UE capability set, and the second frequency domain resource corresponds to the second UE capability set.

59. The apparatus according to claim 58, characterized in that, The first UE capability set and the second UE capability set satisfy one or more of the following: the UE capabilities in the first UE capability set are higher than the UE capabilities in the second UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

60. The apparatus according to claim 58 or 59, characterized in that, The first signal includes one or more of the following: synchronization signal, broadcast signal, downlink control information (DCI), system information; and / or, the second signal includes one or more of the following: synchronization signal, broadcast signal, DCI, system information.

61. The apparatus according to any one of claims 58 to 60, characterized in that, The center frequency of the first frequency domain resource is higher than the center frequency of the second frequency domain resource; and / or, the bandwidth of the first frequency domain resource is greater than the bandwidth of the second frequency domain resource.

62. A signal transmission device, characterized in that, The device includes: The receiving module is used to receive a second signal within a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

63. The apparatus according to claim 62, characterized in that, The second UE capability set satisfies one or more of the following: the UE capabilities in the second UE capability set are lower than the UE capabilities in the first UE capability set; the first UE capability set contains at least the second UE capability set; the first UE capability set is a superset of the second UE capability set.

64. The apparatus according to claim 62 or 63, characterized in that, The second signal includes one or more of the following: synchronization signal, broadcast signal, downlink control information (DCI), and system information.

65. The apparatus according to any one of claims 62 to 64, characterized in that, The center frequency of the second frequency domain resource is lower than the center frequency of the first frequency domain resource; and / or, the bandwidth of the second frequency domain resource is less than the bandwidth of the first frequency domain resource.

66. A network device, characterized in that, The network device includes: a processor; a transmitter connected to the processor; and a memory for storing executable instructions of the processor; wherein the transmitter is configured to transmit a first signal in a first frequency domain resource and a second signal in a second frequency domain resource, the first frequency domain resource corresponding to a first terminal device (UE) capability set, and the second frequency domain resource corresponding to a second UE capability set.

67. A terminal device, characterized in that, The terminal device includes: a processor; a receiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the receiver is configured to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

68. A terminal device, characterized in that, The terminal device includes a receiver configured to receive a second signal within a second frequency domain resource, the second frequency domain resource corresponding to a second UE capability set.

69. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one program, which is loaded and executed by a processor to transmit a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first frequency domain resource corresponds to a first terminal device (UE) capability set, and the second frequency domain resource corresponds to a second UE capability set.

70. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one program, which is loaded and executed by a processor to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set and the second frequency domain resource corresponds to a second UE capability set.

71. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium. A processor retrieves the computer instructions from the computer-readable storage medium and executes the computer instructions to transmit a first signal in a first frequency domain resource and a second signal in a second frequency domain resource. The first frequency domain resource corresponds to a first terminal device (UE) capability set, and the second frequency domain resource corresponds to a second UE capability set.

72. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium. A processor retrieves the computer instructions from the computer-readable storage medium and executes the computer instructions to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource. The first frequency domain resource corresponds to a first UE capability set, and the second frequency domain resource corresponds to a second UE capability set.

73. A chip, characterized in that, The chip includes programmable logic circuitry and / or at least a program to enable a network device equipped with the chip to transmit a first signal in a first frequency domain resource and a second signal in a second frequency domain resource, wherein the first frequency domain resource corresponds to a first terminal device (UE) capability set and the second frequency domain resource corresponds to a second UE capability set.

74. A chip, characterized in that, The chip includes programmable logic circuitry and / or at least a program to enable a terminal device equipped with the chip to receive a first signal in a first frequency domain resource and / or receive a second signal in a second frequency domain resource; wherein the first frequency domain resource corresponds to a first UE capability set and the second frequency domain resource corresponds to a second UE capability set.

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